refactor: standardize new game progress ui

- introduce shared progress indicator component for wizard steps
- align layouts and button sizing across new game panels
- update feature exports to surface the new component

Refs #30

.cursor/README.md

@@ -0,0 +1,25 @@
+# Cursor Rules for BSC Score (Astro Web App)
+
+## Summary of Rule Adaptations
+
+This project uses the Cursor rules system to enforce best practices and workflow discipline. The following summarizes the rule adaptations, removals, and additions for this project:
+
+### Enforced Rules
+- All general development, git workflow, Gitea usage, discipline, and best practices rules are enforced.
+- **best-practices-astro.mdc** is enforced, as the project is built with Astro.
+- Type safety and code quality rules are relevant due to the use of TypeScript (via Astro's strict config).
+
+### Not Relevant / Not Present
+- No CLI, API, or data science rules are present or required, as this is a web application only.
+- No rules were removed, as all present rules are applicable to the project domain.
+
+### Project-Specific Adaptations
+- See `.cursor/rules/project-adaptations.mdc` for a detailed rationale and documentation of all rule adaptations and exceptions.
+
+### Maintenance
+- When central rules are updated, all `.mdc` files in `.cursor/rules` should be re-reviewed and project-specific adaptations re-applied.
+- If any conflicts or ambiguities arise, manual review will be requested.
+
+---
+
+This README documents the current state of rule enforcement and adaptation for the BSC Score project. For further details, consult the individual rule files in `.cursor/rules/` and the project adaptation summary. 

.cursor/rules/best-practices.mdc

@@ -0,0 +1,15 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+- Write clean, readable, and maintainable code
+- Follow SOLID principles and DRY (Don't Repeat Yourself)
+- Use meaningful variable and function names that explain their purpose
+- Add comments for complex logic, but prefer self-documenting code
+- Handle errors gracefully with proper error handling
+- Implement proper logging and debugging practices
+- Use consistent indentation and formatting
+- Avoid deep nesting - prefer early returns and guard clauses
+- Keep functions small and focused on single responsibilities
+- Use type safety when available (TypeScript, JSDoc, etc.)

.cursor/rules/dev-folder.mdc

@@ -0,0 +1,40 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+# /dev Folder Rules
+
+## Resource Management Protocol
+- Resources in `/dev` are staging materials that require processing before production use
+- NEVER automatically copy resources from `/dev` to production locations
+- ONLY move or process `/dev` resources when explicitly instructed by user
+- Maintain original files in `/dev` unless specifically told to remove them
+
+## Quick and Dirty (QnD) Scripts Protocol
+- `/dev` is the designated location for quick prototyping scripts
+- QnD scripts in `/dev` don't need to follow full production code standards
+- Focus on functionality over code quality for QnD scripts
+- Document script purpose with minimal comments
+- Use descriptive filenames that indicate script function
+- QnD scripts should be marked clearly (e.g., `qnd_` prefix or `.qnd.` in filename)
+
+## Proof of Concept (POC) Protocol
+- All POC development happens exclusively in `/dev`
+- POC code should be isolated from production codebase
+- POC code can be experimental and doesn't require full error handling
+- When POC is approved for production, create separate implementation outside `/dev`
+
+## Temporary Files Management
+- Use `/dev` for all temporary files created during development process
+- User-created temporary files can be placed directly in `/dev`
+
+## Safety and Cleanup Rules
+- NEVER delete files from `/dev` without explicit user permission
+- Ask before moving files out of `/dev` to production locations
+- Maintain clear separation between `/dev` content and production code
+
+## Exclusions and Restrictions
+- Production builds should NEVER reference files directly from `/dev`
+- `/dev` paths should not be hardcoded in production configuration
+- `/dev` is not for production dependencies or critical system files

.cursor/rules/discipline.mdc

@@ -0,0 +1,46 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+# Development Discipline Rules
+
+## Precision Over Presumption
+- NEVER add functionality that wasn't explicitly requested
+- NEVER speculate beyond the current scope of work
+- NEVER assume requirements or extend beyond stated needs
+- If uncertain about any aspect, state "I don't know" rather than guessing
+- Stick to the exact scope defined in the request
+
+## File Modification Protocol
+- NEVER modify files if the user's prompt ends with a question mark (?)
+- NEVER assume permission to refactor existing code
+- Only modify files when explicitly instructed to do so
+- Always ask for permission before making structural changes
+
+## Code Quality Enforcement (Zero Tolerance)
+- Every line of code must be bug-free, secure, and maintainable
+- Violations of DRY (Don't Repeat Yourself) are unacceptable
+- Violations of KISS (Keep It Simple, Stupid) are unacceptable
+- Code must be self-documenting with meaningful names
+- Comments should explain "why" not "what"
+- Names must reveal intent clearly
+
+## Technical Standards (Non-Negotiable)
+- Correctness takes priority over performance
+- Readability is paramount in all code decisions
+- Every solution must include:
+  - Comprehensive error handling
+  - Input validation
+  - Consideration of failure modes
+  - Edge case handling
+- Design pattern choices must be justified (e.g., "Using Factory pattern here because...")
+
+## Violation Response Protocol
+- If a rule conflicts with a user request:
+  1. Clearly state the specific conflict
+  2. Refuse the action until the conflict is resolved
+  3. Provide alternative approaches if possible
+- Example responses:
+  - "This would violate DRY principle because... Alternative approach: ..."
+  - "Cannot modify files - prompt ends with '?'. Did you mean to ask a question instead?"

.cursor/rules/git-workflow.mdc

@@ -0,0 +1,40 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+# Git Workflow Rules
+
+## Zero Autonomy on Git Operations
+- NEVER stage, commit, or push code without explicit user instruction
+- NEVER assume permission to perform git operations
+- If asked about git status, only provide information - do not take action
+
+## Commit Protocol (When Explicitly Asked)
+When user requests a commit, follow this exact sequence:
+
+1. **Review Phase**:
+   - List ALL modified files with their status (M/A/D)
+   - List ALL added files that will be staged
+   - List ALL deleted files
+   - Check for any files that should be included but aren't staged
+
+2. **Summary Phase**:
+   - Generate commit title (≤50 characters, imperative mood)
+   - Create detailed bulleted summary including:
+     - Which files were changed and how
+     - What logic was modified/added/removed
+     - Impact of changes on functionality
+     - Purpose statement (e.g., "Fix race condition" → "Patches race condition in user authentication flow")
+
+3. **Confirmation Phase**:
+   - Present the complete commit message for approval
+   - Show exactly what will be committed
+   - Wait for explicit confirmation before executing
+   - If user rejects, ask for specific changes to the commit message
+
+## Git Safety Rules
+- If no changes detected when asked to commit: "No changes detected. Aborting as per Git rules."
+- If conflicts exist, report them but do not resolve without instruction
+- Never force push or use destructive git operations
+- Always use conventional commit format when generating messages

.cursor/rules/gitea-usage.mdc

@@ -0,0 +1,43 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+# Gitea Usage Rules
+
+## Purpose
+Establish disciplined, transparent, and user-aligned protocols for using Gitea, especially regarding issue management and traceability between code and issues.
+
+## Rules
+
+1. **Stick to the Current Selected Issue**
+   - Always work with a clearly selected, active Gitea issue.
+   - All code changes must be associated with the currently selected issue.
+   - If you need to switch issues, document the switch and update the new issue context before proceeding.
+
+2. **Update Issues After Commits**
+   - After every commit, update the relevant Gitea issue(s) with a summary of the changes made.
+   - Include references to commit hashes and affected files or features.
+   - If the commit resolves or partially addresses the issue, state this explicitly in the issue update.
+
+3. **Link Commits in Issues**
+   - Every commit message must reference the relevant Gitea issue by its number (e.g., `Fixes #42` or `Refs #42`).
+   - When updating an issue, include direct links to the commit(s) in Gitea for traceability.
+   - Use Gitea's markdown syntax to create clickable links to commits and related issues.
+
+4. **Issue-Driven Workflow**
+   - Do not make code changes without an associated issue.
+   - If a new task arises, create a Gitea issue before starting work.
+   - Use issues to track discussions, decisions, and progress.
+
+5. **Responsibility for Issue Hygiene**
+   - Keep issue status, labels, and assignees up to date.
+   - Close issues only when fully resolved and after confirming with all stakeholders if needed.
+   - Document any ambiguity or blockers in the issue before pausing or switching context.
+
+6. **Current Issue Tracking via .gitea File**
+   - A file named `.gitea` can exist in the project root, containing the URL of the currently selected Gitea issue (e.g., `https://gitea.schwenk.online/froxxxy/vfbred/issues/3`).
+   - The AI assistant will read this file to determine the current project name and issue number for all Gitea-related operations.
+
+## Rationale
+These rules ensure that all work is traceable, communication is clear, and project history is auditable. They foster accountability and make onboarding, reviews, and audits more efficient.

.cursor/rules/installation.mdc

@@ -0,0 +1,39 @@
+---
+description: 
+globs: 
+alwaysApply: false
+---
+# Cursor Rules Automated Installation & Configuration Guide
+
+You are to follow these instructions after this `rules` folder has been copied into the project's `.cursor` directory. Your goal is to configure and adapt the rules for this specific project with minimal manual intervention.
+
+## 1. Review Rule Files
+- Read all `.mdc` files in `.cursor/rules`.
+- Identify any rules that are not relevant to this project's framework, language, or domain.
+- List which files should be removed, renamed, or adapted, and propose new rules if needed.
+
+## 2. Adaptation
+- For each rule that requires adaptation (e.g., framework-specific best practices), generate a new `.mdc` file (e.g., `best-practices-react.mdc`, `best-practices-python.mdc`) with appropriate content.
+- Remove or archive irrelevant rules (e.g., Astro-specific rules in a non-Astro project).
+- If the project is not web-based, create domain-specific rules (e.g., `cli-ux.mdc`, `api-design.mdc`, `data-best-practices.mdc`).
+
+## 3. Project-Specific Customization
+- Analyze the project structure and requirements.
+- Create a `project-adaptations.mdc` file summarizing any overrides, extensions, or exceptions to the default rules.
+- Document all changes and the reasoning behind them.
+
+## 4. Documentation
+- Update `.cursor/README.md` to summarize all rule adaptations, removals, and additions.
+- Clearly state which rules are overridden, ignored, or extended for this project.
+
+## 5. Maintenance
+- When the central rules are updated, re-read all `.mdc` files in `.cursor/rules`.
+- Re-apply project-specific adaptations and update documentation as needed.
+- Alert the user if any manual review is required due to conflicts or ambiguities.
+
+---
+
+**General Principle:**
+- Automate as much of the review, adaptation, and documentation process as possible.
+- Only request user input if clarification or conflict resolution is required.
+

.cursor/rules/mcp-usage.mdc

@@ -0,0 +1,12 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+- Use Model Context Protocol (MCP) servers when available and appropriate
+- Leverage MCP for enhanced functionality like file system operations, API integrations, or specialized tools
+- Prefer MCP-based solutions over manual implementations when MCP servers are available
+- Utilize MCP for better context awareness and cross-system integration
+- Check for available MCP servers before implementing custom solutions
+- Use MCP for database operations, external API calls, and system integrations when possible
+- Ensure MCP usage aligns with security best practices and project requirements

.cursor/rules/prd-alignment.mdc

@@ -0,0 +1,12 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+- Always reference and stay aligned with the requirements in [prd.md](mdc:docs/prd.md)
+- Before making any significant changes, verify they align with the PRD specifications
+- If a proposed change conflicts with the PRD, flag it and ask for clarification
+- Ensure all new features and modifications serve the goals outlined in the PRD
+- Maintain consistency with the project scope and user stories defined in the PRD
+- Consider the technical requirements and constraints mentioned in the PRD
+- Validate that implementations match the expected user experience described in the PRD

.cursor/rules/project-adaptations.mdc

@@ -0,0 +1,26 @@
+---
+description: 
+globs: 
+alwaysApply: false
+---
+# Project-Specific Rule Adaptations for BSC Score (Astro Web App)
+
+## Overview
+This project is a modern, responsive web application for tracking billiards scores, built with Astro and vanilla JavaScript. The following adaptations and exceptions apply to the default Cursor rules:
+
+## Rule Adaptations & Removals
+
+- **best-practices-astro.mdc**: Kept and enforced, as the project is built with Astro.
+- **CLI/API/Non-Web Rules**: No CLI, API, or data science rules are needed. No such rules exist in the current ruleset, so no removals are required.
+- **All Other Rules**: All other rules are relevant and retained, as they apply to general development, git workflow, Gitea usage, discipline, and best practices for web projects.
+
+## Reasoning
+- The project is a web application using Astro, so Astro-specific best practices are required.
+- There is no CLI, API, or non-web domain logic, so no domain-specific rules for those are needed.
+- TypeScript is supported via Astro's strict config, so type safety rules are relevant.
+
+## Overrides/Extensions
+- No overrides or extensions are currently required. If the project scope changes (e.g., adds an API or CLI), new rules will be proposed.
+
+## Documentation
+- This file documents the rationale for rule selection and adaptation. All changes are summarized in .cursor/README.md as required.

.cursor/rules/questions-handling.mdc

@@ -0,0 +1,11 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+- When questions are asked, provide clear and comprehensive answers
+- Do NOT make any code changes, file modifications, or implementations when answering questions
+- Focus solely on explaining concepts, providing guidance, or clarifying requirements
+- If examples are needed, present them as explanatory code blocks, not as file changes
+- Ask for explicit confirmation before making any modifications to the codebase
+- Separate informational responses from actionable requests clearly

.cursor/rules/senior-developer-protocol.mdc

@@ -0,0 +1,54 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+# Senior Developer Protocol Rules
+
+## Expert-Level Assumption
+- Assume user has expert-level technical competence
+- NEVER explain basic programming concepts unless explicitly asked
+- Phrases like "As you know..." are forbidden
+- No patronizing simplifications - provide raw technical depth
+- Prioritize implementation over theory unless explicitly requested
+- Code examples > lengthy explanations
+
+## Absolute Truthfulness Protocol
+- NEVER lie by omission, approximation, or fabrication
+- If uncertain about anything:
+  - Use "I don't know" as a hard stop - no guessing allowed
+  - Flag unverified information with "UNVERIFIED:" prefix
+- If solution is suboptimal or controversial:
+  - "The standard approach is X, but it fails for Y. Here's why Z might be better, but risks A."
+
+## No False Certainty
+- Reject binary answers for ambiguous problems
+- Use phrases like: "There's no consensus on this—here are the tradeoffs..."
+- Always expose unknowns: "This answer depends on [unconfirmed variable]. Without testing, we can't be sure."
+- Acknowledge when multiple valid approaches exist
+
+## Correctness Over Politeness
+- If user request has flaws (anti-patterns, security risks):
+  - "WARNING: This approach would cause X due to Y. Alternatives: A, B."
+- If better tools/libraries exist:
+  - "You asked for X, but Y is industry-standard because... Shall I proceed with X anyway?"
+- Challenge problematic requests directly and professionally
+
+## Proof of Work Requirements
+For complex answers, provide:
+- Citations from official documentation or RFCs
+- Benchmarks if performance is critical
+- Explicit testing recommendations: "This is untested—would you like a prototype to validate?"
+- References to industry standards and best practices
+
+## Response Prefixes (Mandatory)
+- Use "UNVERIFIED:" for uncertain information
+- Use "OPINION:" for subjective recommendations
+- Use "WARNING:" for potentially problematic approaches
+- Use "UNTESTED:" for theoretical solutions
+
+## Conflict Resolution
+- If request is impossible or contradictory:
+  - "INVALID: This violates [principle X] because [Y]. Aborting."
+- Provide clear reasoning for refusal
+- Offer alternative approaches when possible

.cursor/rules/thinking-process.mdc

@@ -0,0 +1,44 @@
+---
+description: 
+globs: 
+alwaysApply: true
+---
+# Thinking Process Rules
+
+## Exploration First Protocol
+- Always show uncertainty and reasoning process
+- Use phrases like: "I'm debating between X and Y because..."
+- Document failed approaches: "Approach A failed due to B; pivoting to C."
+- Make the decision-making process transparent and auditable
+
+## Atomic Step Reasoning
+- Break down complex reasoning into numbered, simple sentences
+- Show progression of thought clearly
+- Revise thinking publicly: "Earlier I thought X, but now Y makes more sense because..."
+- Each step should be independently understandable
+
+## Proactive Problem Anticipation
+- Propose unrequested but relevant solutions when critical
+- Use format: "You didn't ask for error handling, but Z is critical because..."
+- Identify potential issues before they become problems
+- Suggest complementary improvements that align with the main request
+
+## Auditable Decision Trail
+- Document why specific approaches were chosen over alternatives
+- Show trade-off analysis: "Chose X over Y because of performance, but sacrifices readability"
+- Include decision context: "Given constraints A and B, solution C is optimal"
+- Make it easy to understand the reasoning behind technical choices
+
+## Iterative Refinement Process
+- Start with initial assessment
+- Show how understanding evolves
+- Document assumption changes
+- Acknowledge when new information changes conclusions
+- Example: "Initial analysis suggested X, but considering constraint Y, Z is actually better"
+
+## Question Protocol Integration
+- When user prompt starts with "QUESTION":
+  - Provide thorough answer using above thinking process
+  - Do NOT modify any files
+  - Focus entirely on explanation and reasoning
+  - Make thinking process visible in the response

.gitea

@@ -0,0 +1 @@
+https://gitea.schwenk.online/froxxxy/bscscore/issues/30

.gitignore

@@ -0,0 +1,32 @@
+# build output
+dist/
+# generated types
+.astro/
+
+# dependencies
+node_modules/
+
+# logs
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+
+# environment variables
+.env
+.env.production
+
+# macOS-specific files
+.DS_Store
+
+# jetbrains setting folder
+.idea/
+
+.gitea
+dev/.gitea
+
+# Playwright test artifacts
+playwright-report/
+test-results/
+playwright/.cache/

.vscode/extensions.json

@@ -0,0 +1,4 @@
+{
+  "recommendations": ["astro-build.astro-vscode"],
+  "unwantedRecommendations": []
+}

.vscode/launch.json

@@ -0,0 +1,11 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "command": "./node_modules/.bin/astro dev",
+      "name": "Development server",
+      "request": "launch",
+      "type": "node-terminal"
+    }
+  ]
+}

README.md

@@ -1,80 +1,231 @@
-# BSC Score
+# BSC Score - Pool Scoring Application
 
-A modern, responsive web application for tracking billiards scores. Built with vanilla JavaScript and designed for mobile-first usage.
+A modern, responsive pool/billiards scoring application built with **Astro** and **Preact**, following best practices for maintainability, performance, and reusability.
 
-## Features
+## ✨ Features
 
-- Track scores for different billiards game types (8-Ball, 9-Ball, 10-Ball, 14/1)
+- **Multi-game Support**: 8-Ball, 9-Ball, 10-Ball, and 14/1 Endlos
-- Support for "Race to X" games
+- **Real-time Scoring**: Live score tracking with undo functionality
-- Real-time score tracking
+- **Player Management**: Automatic player name history and suggestions
-- Game history with active and completed games
+- **Game Management**: Create, track, and manage multiple games
-- Player name history and quick selection
+- **Responsive Design**: Optimized for mobile and desktop
-- Mobile-optimized touch interface
+- **Progressive Web App**: Offline support and app-like experience
-- Offline support with local storage
+- **TypeScript**: Full type safety for better development experience
-- Dark theme design
 
-## Usage
+## 🏗️ Architecture
 
-1. Open `index.html` in your web browser
+Everything reusable now lives under `src/lib`, allowing you to embed the core experience inside another React/Preact host without the Astro shell.
-2. Create a new game by clicking "Neues Spiel"
-3. Select or enter player names
-4. Choose game type and optional "Race to X" setting
-5. Use the score buttons to track points during the game
-6. Complete the game when finished
-7. View game history and filter by status
 
-## Development
+- **`@lib/domain`** – Pure TypeScript domain model (types, constants, validation, helpers).
+- **`@lib/data`** – Persistence adapters and repositories (IndexedDB, migrations).
+- **`@lib/state`** – Composable hooks that orchestrate domain + data.
+- **`@lib/ui`** – Stateless UI primitives with co-located CSS modules.
+- **`@lib/features/*`** – Feature bundles composing UI + state (game list, detail, lifecycle modals, new-game wizard).
 
-The application is built using:
+The Astro `src/components` folder is now a thin host layer (screens + island bootstrap) that consumes the library.
-- Vanilla JavaScript (ES6+)
-- HTML5
-- CSS3
-- LocalStorage for data persistence
 
-No build process or dependencies required. Simply clone the repository and open `index.html` in a web browser.
+Detailed module docs live in `src/lib/docs/architecture.md` and the individual `README.md` files under each package.
 
-## Project Structure
+## 🚀 Getting Started
 
-The project consists of the following key files:
+### Prerequisites
-- `index.html`: Main application file containing HTML, CSS, and JavaScript
+- Node.js 18+ 
-- `README.md`: Project documentation and setup instructions
+- npm or yarn
-- `LICENSE`: GNU GPLv3 license text
-- `TODO.md`: Roadmap and planned features
 
-## Features in Detail
+### Installation
+```bash
+# Clone the repository
+git clone <repository-url>
+cd bscscore
 
-### Core Features
+# Install dependencies
-- Score tracking for multiple billiards game types
+npm install
-- Player name history with quick selection
-- Game status management (active/completed)
-- Local storage for offline functionality
-- Mobile-optimized interface
 
-### User Interface
+# Start development server
-- Dark theme design
+npm run dev
-- Touch-friendly controls
+```
-- Responsive layout
-- Game type selection
-- Player name management
 
-### Data Management
+### Available Scripts
-- Local storage persistence
+```bash
-- Game history tracking
+npm run dev      # Start development server
-- Player name history
+npm run build    # Build for production
-- Status filtering
+npm run preview  # Preview production build
+npm run test:record  # Record browser interactions with Playwright
+npm run test:e2e    # Run all recorded browser automation scripts
+```
 
-## Contributing
+### Building with Docker
+```bash
+# Build for production using Docker
+docker run -it -v $(pwd):/app -w /app --rm node:latest npx astro build
+```
 
-1. Fork the repository
+## 🧪 Testing
-2. Create your feature branch (`git checkout -b feature/AmazingFeature`)
-3. Commit your changes (`git commit -m 'Add some AmazingFeature'`)
-4. Push to the branch (`git push origin feature/AmazingFeature`)
-5. Open a Pull Request
 
-## Roadmap
+The project uses **Playwright** for browser automation and recording. This allows you to record interactions once and replay them anytime, making it easy to test repetitive workflows.
 
-See [TODO.md](TODO.md) for a list of proposed features and known issues.
+### Quick Start
 
-## License
+**Recording interactions:**
+```bash
+# Terminal 1: Start dev server
+npm run dev
 
-This project is licensed under the GNU General Public License v3.0 - see the [LICENSE](LICENSE) file for details.
+# Terminal 2: Start recording
+npm run test:record
+```
+
+**Running recordings:**
+```bash
+npm run test:e2e
+```
+
+### Features
+
+- **Record interactions**: Use Playwright codegen to capture clicks, form fills, and navigation
+- **Replay scripts**: Run recorded scripts automatically
+- **Duplicate & modify**: Copy any script and modify it (e.g., change the last step from clicking 'z' to clicking 'a')
+- **Full scripting power**: Edit generated TypeScript files directly for custom automation
+
+### Documentation
+
+For detailed instructions on recording, modifying, and running scripts, see:
+- **[tests/recordings/README.md](tests/recordings/README.md)** - Complete workflow documentation
+
+## 📁 Project Structure
+
+### **Core Components**
+- `src/components/App.tsx` - Astro-bound shell orchestrating library modules
+- `src/components/screens/` - Screen containers consuming `@lib/features`
+- `src/lib/` - Reusable application spine (domain/data/state/ui/features)
+
+### **State Management**
+- `@lib/state/useGameState` - Game CRUD operations and persistence
+- `@lib/state/useNavigation` - Application routing and screen state
+- `@lib/state/useModal` - Modal state management helpers
+
+### **Business Logic**
+- `@lib/data/gameService` - Game creation, updates, and persistence orchestration
+- `@lib/domain/gameUtils` - Game-related utility functions
+- `@lib/domain/validation` - Input validation and sanitisation
+
+### **Type Definitions**
+- `@lib/domain/types` - Game domain types
+- `@lib/ui/types` - UI component types
+- `types/css-modules.d.ts` - CSS modules type support
+
+## 🎯 Key Improvements
+
+### **From Monolithic to Modular**
+- **Before**: 360-line App component handling everything
+- **After**: Separated concerns with focused, single-responsibility components
+
+### **Type Safety**
+- **Before**: JavaScript with PropTypes comments
+- **After**: Full TypeScript with comprehensive type definitions
+
+### **State Management**
+- **Before**: All state in one component with prop drilling
+- **After**: Custom hooks with proper encapsulation and reusability
+
+### **Reusability**
+- **Before**: Tightly coupled, single-use components  
+- **After**: Reusable UI components with variant support
+
+### **Performance**
+- **Before**: Client-side only rendering
+- **After**: Astro's islands architecture with optimal hydration
+
+### **Developer Experience**
+- **Before**: No structure, mixed concerns
+- **After**: Clear architecture, proper tooling, and documentation
+
+## 🛠️ Technology Stack
+
+- **Framework**: [Astro](https://astro.build/) - Islands architecture for optimal performance
+- **UI Library**: [Preact](https://preactjs.com/) - Lightweight React alternative
+- **Language**: [TypeScript](https://www.typescriptlang.org/) - Type safety and better DX
+- **Styling**: CSS Modules with design tokens
+- **Build Tool**: Vite (integrated with Astro)
+
+## 📱 Progressive Web App
+
+The application includes PWA features:
+- Offline support with service worker
+- App manifest for "Add to Home Screen"
+- Optimized for mobile devices
+- Fast loading with proper caching strategies
+
+## 🎨 Design System
+
+### **Design Tokens**
+- Consistent color palette
+- Standardized spacing and sizing
+- Responsive breakpoints
+- Accessibility-compliant contrast ratios
+
+### **Component Variants**
+- Button: `primary`, `secondary`, `danger`
+- Card: `default`, `elevated`, `outlined`
+- Sizes: `small`, `medium`, `large`
+
+## 🧪 Best Practices Implemented
+
+### **Code Quality**
+- ✅ SOLID principles
+- ✅ DRY (Don't Repeat Yourself)
+- ✅ Single Responsibility Principle
+- ✅ Proper separation of concerns
+- ✅ TypeScript strict mode
+
+### **Performance**
+- ✅ Code splitting with Astro islands
+- ✅ Optimized bundle size
+- ✅ Efficient re-rendering with proper hooks
+- ✅ CSS Modules for optimized styling
+
+### **Accessibility**
+- ✅ ARIA labels and roles
+- ✅ Keyboard navigation support
+- ✅ Screen reader compatibility
+- ✅ High contrast support
+
+### **Maintainability**
+- ✅ Clear file structure
+- ✅ Comprehensive documentation
+- ✅ Type safety throughout
+- ✅ Modular, testable components
+
+## 🔧 Configuration
+
+### **Astro Configuration**
+- Preact integration with React compatibility
+- TypeScript strict mode
+- Optimized build settings
+- Development server configuration
+
+### **TypeScript Configuration**
+- Strict type checking
+- Modern ES2020+ features
+- CSS Modules support
+- Astro-specific types
+
+## 📈 Future Improvements
+
+- Unit and integration testing (if needed)
+- Internationalization (i18n) support
+- Advanced game statistics and analytics
+- Real-time multiplayer support
+- Game export/import functionality
+
+## 🤝 Contributing
+
+This codebase follows strict development principles:
+1. Every feature must be type-safe
+2. Components must be reusable and well-documented
+3. Business logic must be separated from UI logic
+4. All changes must follow the established architecture patterns
+
+## 📄 License
+
+[Include your license information here]

TODO.md

@@ -1,89 +0,0 @@
-# TODO List
-
-## High Priority
-1. Add game statistics
-   - Track win/loss ratio per player
-   - Show total games played
-   - Display average scores
-   - Show favorite game types per player
-
-2. Implement game history
-   - Log score changes with timestamps
-   - Show who made which changes
-   - Allow reviewing game progression
-
-3. Add confirmation for game completion
-   - Show final score summary
-   - Display winner announcement
-   - Option to undo completion
-
-4. Improve error handling
-   - Validate all user inputs
-   - Show meaningful error messages
-   - Add recovery options for data issues
-
-## Medium Priority
-5. Add player profiles
-   - Player avatars/images
-   - Personal statistics
-   - Preferred game types
-   - Nickname support
-
-6. Implement game rules
-   - Show rules for each game type
-   - Add rule validation for scoring
-   - Display fouls and penalties
-
-7. Add search and filtering
-   - Search for specific games/players
-   - Filter by date ranges
-   - Sort by various criteria
-   - Advanced filtering options
-
-8. Improve game type management
-   - Custom game types
-   - Configurable scoring rules
-   - Special game modes
-
-## Lower Priority
-9. Add themes and customization
-   - Dark/light mode toggle
-   - Custom color schemes
-   - Font size adjustments
-   - Layout options
-
-10. Implement data backup
-    - Export to different formats
-    - Automatic backups
-    - Data recovery options
-
-11. Add social features
-    - Share game results
-    - Player rankings
-    - Tournament support
-    - Challenge system
-
-12. Improve accessibility
-    - Screen reader support
-    - Keyboard navigation
-    - High contrast mode
-    - Voice input support
-
-## Nice to Have
-13. Add animations and effects
-    - Score change animations
-    - Victory celebrations
-    - Transition effects
-    - Sound effects
-
-14. Implement achievements
-    - Player milestones
-    - Special records
-    - Achievement badges
-    - Progress tracking
-
-15. Add multi-language support
-    - Language selection
-    - Localized content
-    - RTL support
-    - Custom translations

UI_IMPROVEMENTS.md

@@ -0,0 +1,124 @@
+# BSC Score App - UI Improvements for Tablet Optimization
+
+## Overview
+This document outlines the comprehensive UI improvements made to enhance the aesthetic appeal and tablet usage experience of the BSC Score application.
+
+## Key Improvements Implemented
+
+### 1. Design System Implementation
+- **CSS Custom Properties**: Established a comprehensive design token system with consistent colors, spacing, typography, and transitions
+- **Responsive Typography**: Tablet-specific font scaling for optimal readability
+- **Touch Target Optimization**: Minimum 44px touch targets on mobile, 48-56px on tablets
+- **Consistent Spacing**: 8px-based spacing system with semantic naming (--space-xs through --space-xxl)
+
+### 2. Enhanced Color System
+- **Primary Color**: Orange (#ff9800) with hover states
+- **Semantic Colors**: Success, danger, warning with consistent usage
+- **Surface Colors**: Improved contrast and visual hierarchy
+- **Text Colors**: Primary, secondary, and muted text colors for better readability
+
+### 3. Tablet-Specific Optimizations
+
+#### Layout Improvements
+- **Max-width adjustments**: 900px for tablets vs 1200px for desktop
+- **Adaptive padding**: Increased spacing on larger screens
+- **Grid layouts**: Improved symmetry in filter buttons and game type selection
+
+#### Touch Experience
+- **Larger touch targets**: 56px minimum on tablets
+- **Hover effects**: Subtle animations and visual feedback
+- **Improved button spacing**: Better gaps between interactive elements
+
+### 4. Component-Specific Enhancements
+
+#### Game List
+- **Grid-based layout**: Improved symmetry with CSS Grid
+- **Enhanced cards**: Better shadows, borders, and hover effects
+- **Symmetric filter buttons**: Equal width distribution
+- **Improved visual hierarchy**: Game type badges, centered player names, highlighted scores
+- **Better delete buttons**: Larger touch targets with improved styling
+
+#### New Game Wizard
+- **Progress indicator**: Visual step indicator with active state animations
+- **Consistent spacing**: Uniform gaps throughout the form
+- **Enhanced input fields**: Better focus states and clear buttons
+- **Improved navigation**: Larger arrow buttons with better visual feedback
+- **Game type/Race-to selection**: Grid-based layout for better alignment
+
+#### Button System
+- **Unified styling**: Consistent button variants (primary, secondary, danger)
+- **Micro-interactions**: Hover animations and press states
+- **Size variants**: Small, medium, large with tablet adjustments
+- **Focus indicators**: Improved accessibility with visible focus rings
+
+### 5. Responsive Design Enhancements
+
+#### Breakpoints
+- **Mobile**: < 768px
+- **Tablet**: 768px - 1024px
+- **Desktop**: > 1024px
+
+#### Tablet-Specific Features
+- **Horizontal navigation**: Better layout for tablet landscape mode
+- **Increased font sizes**: Improved readability on tablet screens
+- **Enhanced spacing**: More generous padding and margins
+- **Grid adjustments**: Optimized column layouts for tablet screens
+
+### 6. Aesthetic Improvements
+
+#### Visual Polish
+- **Gradient backgrounds**: Subtle gradients on player input sections
+- **Enhanced shadows**: Layered shadow system for depth
+- **Smooth transitions**: 0.15s to 0.3s transition durations
+- **Border radius consistency**: Unified corner rounding
+- **Backdrop blur**: Modal overlays with blur effects
+
+#### Typography
+- **Font stack**: Inter font with system fallbacks
+- **Improved line height**: 1.5 for better readability
+- **Font smoothing**: Antialiased text rendering
+- **Weight hierarchy**: Consistent font weight usage
+
+#### Interactive Elements
+- **Shimmer effects**: Subtle shine animation on buttons
+- **Transform effects**: Slight lift on hover states
+- **Color transitions**: Smooth color changes on state updates
+- **Scale animations**: Micro-interactions for button presses
+
+### 7. Accessibility Improvements
+- **Focus management**: Visible focus indicators
+- **Touch target sizes**: WCAG compliant minimum sizes
+- **Color contrast**: Improved contrast ratios
+- **Keyboard navigation**: Enhanced tab order and interactions
+
+## Testing Recommendations
+
+### Tablet Testing
+1. **iPad (10.9")**: Test in both portrait and landscape orientations
+2. **Android tablets**: Various screen sizes and densities
+3. **Touch interactions**: Verify all buttons and inputs are easily tappable
+4. **Scrolling performance**: Ensure smooth scrolling with -webkit-overflow-scrolling
+
+### Cross-Device Testing
+1. **Mobile phones**: Verify mobile breakpoint adjustments
+2. **Desktop browsers**: Ensure desktop experience isn't degraded
+3. **Different orientations**: Test rotation on tablets
+
+## Performance Considerations
+- **CSS Variables**: Minimal performance impact with better maintainability
+- **Transform animations**: Hardware-accelerated for smooth performance
+- **Optimized selectors**: Efficient CSS targeting without over-qualification
+
+## Future Enhancements
+1. **Dark/Light theme toggle**: Leveraging CSS custom properties
+2. **Advanced animations**: Page transitions and micro-interactions
+3. **Gesture support**: Swipe gestures for tablet navigation
+4. **Enhanced accessibility**: Screen reader optimizations
+
+## Browser Support
+- **Modern browsers**: Chrome 88+, Firefox 85+, Safari 14+
+- **CSS Grid**: Full support across target browsers
+- **CSS Custom Properties**: Native support, no fallbacks needed
+
+## Conclusion
+These improvements create a more polished, professional, and tablet-optimized experience while maintaining consistency across all device sizes. The design system approach ensures easy maintenance and future scalability.

astro.config.mjs

@@ -0,0 +1,51 @@
+// @ts-check
+import { fileURLToPath } from 'node:url';
+import { defineConfig } from 'astro/config';
+
+const srcDir = fileURLToPath(new URL('./src', import.meta.url));
+const libDir = fileURLToPath(new URL('./src/lib', import.meta.url));
+import preact from '@astrojs/preact';
+
+// https://astro.build/config
+export default defineConfig({
+  integrations: [
+    preact({
+      compat: true, // Enable React compatibility for better ecosystem support
+    })
+  ],
+  
+  // Build optimizations
+  build: {
+    inlineStylesheets: 'auto',
+  },
+  
+  // Vite configuration for development
+  vite: {
+    resolve: {
+      alias: {
+        '@': srcDir,
+        '@lib': libDir,
+      },
+    },
+    define: {
+      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV),
+    },
+    css: {
+      modules: {
+        localsConvention: 'camelCase',
+      },
+    },
+    optimizeDeps: {
+      include: ['preact/hooks'],
+    },
+  },
+  
+  // Development server configuration
+  server: {
+    port: 3000,
+    host: true,
+  },
+  
+  // Performance and SEO optimizations
+  compressHTML: true,
+});

manifest.json

@@ -1,22 +0,0 @@
-{
-  "name": "BSC Score",
-  "short_name": "BSC Score",
-  "description": "Pool Scoring App für den Billard Sport Club",
-  "lang": "de",
-  "start_url": ".",
-  "display": "fullscreen",
-  "background_color": "#1a1a1a",
-  "theme_color": "#000000",
-  "icons": [
-    {
-      "src": "icon-192.png",
-      "sizes": "192x192",
-      "type": "image/png"
-    },
-    {
-      "src": "icon-512.png",
-      "sizes": "512x512",
-      "type": "image/png"
-    }
-  ]
-} 

package.json

@@ -0,0 +1,24 @@
+{
+  "name": "growing-galaxy",
+  "type": "module",
+  "version": "0.0.1",
+  "scripts": {
+    "dev": "astro dev --host",
+    "build": "astro build",
+    "preview": "astro preview",
+    "astro": "astro",
+    "test:record": "playwright codegen http://localhost:3000",
+    "test:e2e": "playwright test",
+    "test:replay": "playwright test"
+  },
+  "dependencies": {
+    "@astrojs/preact": "^4.1.3",
+    "astro": "^5.15.5",
+    "preact": "^10.26.8"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.56.1",
+    "@types/node": "^24.0.3",
+    "playwright": "^1.56.1"
+  }
+}

playwright.config.ts

@@ -0,0 +1,64 @@
+import { defineConfig, devices } from '@playwright/test';
+
+/**
+ * Playwright configuration for BSC Score browser automation
+ * Configured to work with local dev server on port 3000
+ */
+export default defineConfig({
+  // Test directory - where your recorded scripts live
+  testDir: './tests/recordings',
+  
+  // Match all .ts files in the recordings directory (not just .test.ts or .spec.ts)
+  testMatch: '**/*.ts',
+  
+  // Maximum time one test can run for
+  timeout: 30 * 1000,
+  
+  // Test execution settings
+  fullyParallel: false, // Run tests sequentially to avoid conflicts
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: 1, // Run one at a time for recordings
+  
+  // Reporter configuration
+  reporter: 'html',
+  
+  // Shared settings for all tests
+  use: {
+    // Base URL for tests
+    baseURL: 'http://localhost:3000',
+    
+    // Browser context options
+    trace: 'on-first-retry',
+    screenshot: 'only-on-failure',
+    
+    // Viewport size
+    viewport: { width: 1280, height: 720 },
+  },
+
+  // Configure projects for different browsers
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+    // Uncomment to add more browsers
+    // {
+    //   name: 'firefox',
+    //   use: { ...devices['Desktop Firefox'] },
+    // },
+    // {
+    //   name: 'webkit',
+    //   use: { ...devices['Desktop Safari'] },
+    // },
+  ],
+
+  // Web server configuration - starts dev server automatically if needed
+  // webServer: {
+  //   command: 'npm run dev',
+  //   url: 'http://localhost:3000',
+  //   reuseExistingServer: !process.env.CI,
+  //   timeout: 120 * 1000,
+  // },
+});
+

service-worker.js

@@ -1,31 +0,0 @@
-const CACHE_NAME = 'bscscore-v1';
-const URLS_TO_CACHE = [
-  '/',
-  '/index.html',
-  '/manifest.json',
-  '/favicon.ico',
-  '/icon-192.png',
-  '/icon-512.png'
-];
-
-self.addEventListener('install', event => {
-  event.waitUntil(
-    caches.open(CACHE_NAME).then(cache => cache.addAll(URLS_TO_CACHE))
-  );
-});
-
-self.addEventListener('activate', event => {
-  event.waitUntil(
-    caches.keys().then(keys =>
-      Promise.all(keys.filter(key => key !== CACHE_NAME).map(key => caches.delete(key)))
-    )
-  );
-});
-
-self.addEventListener('fetch', event => {
-  event.respondWith(
-    caches.match(event.request).then(response =>
-      response || fetch(event.request).catch(() => caches.match('/index.html'))
-    )
-  );
-}); 

src/components/App.tsx

@@ -0,0 +1,279 @@
+import { h } from 'preact';
+import { useEffect, useCallback } from 'preact/hooks';
+
+import {
+  useGameState,
+  useNavigation,
+  useNewGameWizard,
+  useModal,
+  useValidationModal,
+  useCompletionModal,
+} from '@lib/state';
+import { GameService } from '@lib/data/gameService';
+import type { StandardGame, Game, EndlosGame } from '@lib/domain/types';
+
+import { Layout } from '@lib/ui/Layout';
+import GameListScreen from './screens/GameListScreen';
+import NewGameScreen from './screens/NewGameScreen';
+import GameDetailScreen from './screens/GameDetailScreen';
+import Modal from '@lib/ui/Modal';
+import ValidationModal from '@lib/ui/ValidationModal';
+import GameCompletionModal from '@lib/features/game-lifecycle/GameCompletionModal';
+import FullscreenToggle from './FullscreenToggle';
+
+/**
+ * Main App component for BSC Score
+ */
+export default function App() {
+  // State management hooks
+  const gameState = useGameState();
+  const navigation = useNavigation();
+  const newGameWizard = useNewGameWizard();
+  const modal = useModal();
+  const validationModal = useValidationModal();
+  const completionModal = useCompletionModal();
+
+  // Game lifecycle handlers
+  const handleCreateGame = useCallback(async (gameData: any) => {
+    try {
+      const gameId = await gameState.addGame(gameData);
+      newGameWizard.resetWizard();
+      navigation.showGameDetail(gameId);
+    } catch (error) {
+      console.error('Failed to create game:', error);
+      validationModal.showValidation('Failed to create game. Please try again.');
+    }
+  }, [gameState.addGame, newGameWizard.resetWizard, navigation.showGameDetail, validationModal.showValidation]);
+
+
+  const handleUpdateScore = useCallback(async (player: number, change: number) => {
+    if (!navigation.currentGameId) return;
+    
+    const game = gameState.getGameById(navigation.currentGameId);
+    if (!game || game.status === 'completed') return;
+    
+    try {
+      const updatedGame = GameService.updateGameScore(game as StandardGame, player, change);
+      
+      // Add undo state for standard games
+      const gameWithHistory = {
+        ...updatedGame,
+        undoStack: [...(game.undoStack || []), game],
+        updatedAt: new Date().toISOString(),
+      };
+      
+      await gameState.updateGame(navigation.currentGameId, gameWithHistory);
+      
+      // Check for completion
+      if (GameService.isGameCompleted(gameWithHistory)) {
+        completionModal.openCompletionModal(gameWithHistory);
+      }
+    } catch (error) {
+      console.error('Failed to update score:', error);
+      validationModal.showValidation('Failed to update score. Please try again.');
+    }
+  }, [navigation.currentGameId, gameState.getGameById, gameState.updateGame, completionModal.openCompletionModal, validationModal.showValidation]);
+
+
+  const handleUndo = useCallback(async () => {
+    if (!navigation.currentGameId) return;
+    
+    const game = gameState.getGameById(navigation.currentGameId);
+    if (!game?.undoStack?.length) return;
+
+    try {
+      const lastState = game.undoStack[game.undoStack.length - 1];
+      const newUndoStack = game.undoStack.slice(0, -1);
+
+      await gameState.updateGame(navigation.currentGameId, {
+        ...lastState,
+        undoStack: newUndoStack,
+      } as Game);
+    } catch (error) {
+      console.error('Failed to undo:', error);
+      validationModal.showValidation('Failed to undo. Please try again.');
+    }
+  }, [navigation.currentGameId, gameState.getGameById, gameState.updateGame, validationModal.showValidation]);
+
+  const handleForfeit = async () => {
+    if (!navigation.currentGameId) return;
+    
+    const game = gameState.getGameById(navigation.currentGameId);
+    if (!game || !('players' in game)) return;
+
+    try {
+      const currentPlayerIndex = game.currentPlayer;
+      if (currentPlayerIndex === null) return;
+
+      const winner = game.players.find((_, idx) => idx !== currentPlayerIndex);
+      const forfeitedGame = {
+        ...game,
+        status: 'completed' as const,
+        winner: winner?.name,
+        forfeitedBy: game.players[currentPlayerIndex].name,
+        updatedAt: new Date().toISOString(),
+      };
+      
+      await gameState.updateGame(navigation.currentGameId, forfeitedGame);
+      completionModal.openCompletionModal(forfeitedGame);
+    } catch (error) {
+      console.error('Failed to forfeit game:', error);
+      validationModal.showValidation('Failed to forfeit game. Please try again.');
+    }
+  };
+
+  const handleFinishGame = () => {
+    if (!navigation.currentGameId) return;
+    
+    const game = gameState.getGameById(navigation.currentGameId);
+    if (!game) return;
+    
+    completionModal.openCompletionModal(game);
+  };
+
+  const handleConfirmCompletion = async () => {
+    if (!navigation.currentGameId) return;
+    
+    try {
+      await gameState.updateGame(navigation.currentGameId, {
+        ...gameState.getGameById(navigation.currentGameId)!,
+        status: 'completed',
+        updatedAt: new Date().toISOString(),
+      });
+      
+      completionModal.closeCompletionModal();
+    } catch (error) {
+      console.error('Failed to complete game:', error);
+      validationModal.showValidation('Failed to complete game. Please try again.');
+    }
+  };
+
+  const handleRematch = async () => {
+    if (!navigation.currentGameId) return;
+    
+    const completedGame = gameState.getGameById(navigation.currentGameId);
+    if (!completedGame) return;
+
+    let gameData;
+    if ('players' in completedGame) {
+      gameData = {
+        player1: completedGame.players[0]?.name || '',
+        player2: completedGame.players[1]?.name || '',
+        player3: completedGame.players[2]?.name || '',
+        gameType: completedGame.gameType,
+        raceTo: completedGame.raceTo.toString(),
+      };
+    } else {
+      gameData = {
+        player1: completedGame.player1,
+        player2: completedGame.player2,
+        player3: completedGame.player3 || '',
+        gameType: completedGame.gameType,
+        raceTo: completedGame.raceTo.toString(),
+      };
+    }
+    
+    try {
+      const newGameId = await gameState.addGame(gameData);
+      completionModal.closeCompletionModal();
+      navigation.showGameDetail(newGameId);
+    } catch (error) {
+      console.error('Failed to create rematch:', error);
+      validationModal.showValidation('Failed to create rematch. Please try again.');
+    }
+  };
+
+  const handleDeleteGame = (gameId: number) => {
+    modal.openModal(gameId);
+  };
+
+  const handleConfirmDelete = async () => {
+    if (modal.modal.gameId) {
+      try {
+        await gameState.deleteGame(modal.modal.gameId);
+        modal.closeModal();
+        navigation.showGameList();
+      } catch (error) {
+        console.error('Failed to delete game:', error);
+        validationModal.showValidation('Failed to delete game. Please try again.');
+      }
+    }
+  };
+
+  return (
+    <Layout>
+      {navigation.screen === 'game-list' && (
+        <GameListScreen
+          games={gameState.games}
+          filter={gameState.filter}
+          onFilterChange={gameState.setFilter}
+          onShowGameDetail={navigation.showGameDetail}
+          onDeleteGame={handleDeleteGame}
+              onShowNewGame={() => {
+                newGameWizard.startWizard();
+                navigation.showNewGame();
+              }}
+        />
+      )}
+
+      {navigation.screen === 'new-game' && (
+        <NewGameScreen
+          step={newGameWizard.newGameStep}
+          data={newGameWizard.newGameData}
+          playerHistory={gameState.getPlayerNameHistory()}
+          onStepChange={newGameWizard.nextStep}
+          onDataChange={newGameWizard.updateGameData}
+          onCreateGame={handleCreateGame}
+          onCancel={() => {
+            newGameWizard.resetWizard();
+            navigation.showGameList();
+          }}
+          onShowValidation={validationModal.showValidation}
+        />
+      )}
+
+      {navigation.screen === 'game-detail' && navigation.currentGameId && (
+        <GameDetailScreen
+          game={gameState.getGameById(navigation.currentGameId)}
+          onUpdateScore={handleUpdateScore}
+          onFinishGame={handleFinishGame}
+          onUpdateGame={async (game: EndlosGame) => {
+            try {
+              await gameState.updateGame(navigation.currentGameId!, game);
+            } catch (error) {
+              console.error('Failed to update game:', error);
+              validationModal.showValidation('Failed to update game. Please try again.');
+            }
+          }}
+          onUndo={handleUndo}
+          onForfeit={handleForfeit}
+          onBack={navigation.showGameList}
+        />
+      )}
+
+      <Modal
+        open={modal.modal.open}
+        title="Spiel löschen"
+        message="Möchten Sie das Spiel wirklich löschen?"
+        onCancel={modal.closeModal}
+        onConfirm={handleConfirmDelete}
+      />
+
+      <ValidationModal
+        open={validationModal.validation.open}
+        message={validationModal.validation.message}
+        onClose={validationModal.closeValidation}
+      />
+
+      <GameCompletionModal
+        open={completionModal.completionModal.open}
+        game={completionModal.completionModal.game}
+        onConfirm={handleConfirmCompletion}
+        onClose={completionModal.closeCompletionModal}
+        onRematch={handleRematch}
+      />
+
+      <FullscreenToggle />
+    </Layout>
+  );
+}

src/components/BscScoreApp.astro

@@ -0,0 +1,34 @@
+---
+// This is an Astro component that properly leverages SSR and islands
+---
+
+<!-- Use Astro's islands architecture for better performance -->
+<!-- Only hydrate the interactive app component when needed -->
+<div id="app-root">
+  <slot name="app-content" />
+</div>
+
+<style>
+  #app-root {
+    height: 100%;
+    width: 100%;
+    overflow: hidden;
+  }
+  
+  /* Progressive enhancement styles */
+  @media (prefers-reduced-motion: reduce) {
+    * {
+      animation-duration: 0.01ms !important;
+      animation-iteration-count: 1 !important;
+      transition-duration: 0.01ms !important;
+    }
+  }
+</style>
+
+<script>
+  // Client-side progressive enhancement
+  document.addEventListener('DOMContentLoaded', () => {
+    // Add any progressive enhancement here
+    console.log('BSC Score App initialized');
+  });
+</script>

src/components/FullscreenToggle.module.css

@@ -0,0 +1,38 @@
+/* FullscreenToggle-specific styles only. */
+.fullscreenToggle {
+    position: fixed;
+    bottom: 20px;
+    right: 20px;
+    width: 48px;
+    height: 48px;
+    border-radius: 50%;
+    background-color: rgba(52, 152, 219, 0.9);
+    border: none;
+    color: white;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
+    z-index: 9999;
+    transition: background-color 0.2s, transform 0.2s;
+}
+.fullscreenToggle:hover {
+    background-color: rgba(52, 152, 219, 1);
+    transform: scale(1.1);
+}
+.fullscreenToggle:active {
+    transform: scale(0.95);
+}
+.fullscreenToggle svg {
+    width: 24px;
+    height: 24px;
+}
+@media screen and (max-width: 480px) {
+    .fullscreenToggle {
+        bottom: 15px;
+        right: 15px;
+        width: 40px;
+        height: 40px;
+    }
+} 

src/components/FullscreenToggle.tsx

@@ -0,0 +1,35 @@
+import { h } from 'preact';
+import { useCallback } from 'preact/hooks';
+import styles from './FullscreenToggle.module.css';
+
+/**
+ * Button to toggle fullscreen mode.
+ * @returns {import('preact').VNode}
+ */
+const FullscreenToggle = () => {
+  // Toggle fullscreen mode for the document
+  const handleToggle = useCallback(() => {
+    if (!document.fullscreenElement) {
+      document.documentElement.requestFullscreen();
+    } else {
+      document.exitFullscreen();
+    }
+  }, []);
+
+  return (
+    <button
+      id="fullscreen-toggle"
+      className={styles.fullscreenToggle}
+      onClick={handleToggle}
+      title="Vollbild umschalten"
+      aria-label="Vollbild umschalten"
+      type="button"
+    >
+      <svg viewBox="0 0 24 24" width="24" height="24" aria-hidden="true">
+        <path fill="currentColor" d="M7 14H5v5h5v-2H7v-3zm-2-4h2V7h3V5H5v5zm12 7h-3v2h5v-5h-2v3zM14 5v2h3v3h2V5h-5z"/>
+      </svg>
+    </button>
+  );
+};
+
+export default FullscreenToggle; 

src/components/GameCompletionModal.tsx

@@ -0,0 +1,63 @@
+import { h } from 'preact';
+import modalStyles from '@lib/ui/Modal.module.css';
+import styles from './GameCompletionModal.module.css';
+import type { Game } from '@lib/domain/types';
+
+interface GameCompletionModalProps {
+  open: boolean;
+  game: Game | null;
+  onConfirm: () => void;
+  onClose: () => void;
+  onRematch: () => void;
+}
+
+/**
+ * Modal shown when a game is completed.
+ */
+const GameCompletionModal = ({ open, game, onConfirm, onClose, onRematch }: GameCompletionModalProps) => {
+  if (!open || !game) return null;
+
+  const playerNames = [game.player1, game.player2, game.player3].filter(Boolean);
+  const scores = [game.score1, game.score2, game.score3].filter((_, i) => playerNames[i]);
+  let maxScore, winners, winnerText;
+
+  if (game.forfeitedBy) {
+    winnerText = `${game.winner} hat gewonnen, da ${game.forfeitedBy} aufgegeben hat.`;
+  } else {
+    maxScore = Math.max(...scores);
+    winners = playerNames.filter((name, idx) => scores[idx] === maxScore);
+    winnerText = winners.length > 1
+      ? `Unentschieden zwischen ${winners.join(' und ')}`
+      : `${winners[0]} hat gewonnen!`;
+  }
+  
+  return (
+    <div id="game-completion-modal" className={modalStyles['modal'] + ' ' + modalStyles['show']} role="dialog" aria-modal="true" aria-labelledby="completion-modal-title">
+      <div className={modalStyles['modal-content']}>
+        <div className={modalStyles['modal-header']}>
+          <span className={modalStyles['modal-title']} id="completion-modal-title">Spiel beendet</span>
+          <button className={modalStyles['close-button']} onClick={onClose} aria-label="Schließen">×</button>
+        </div>
+        <div className={modalStyles['modal-body']}>
+          <div className={styles['final-scores']}>
+            {playerNames.map((name, idx) => (
+              <div className={styles['final-score']} key={name + idx}>
+                <span className={styles['player-name']}>{name}</span>
+                <span className={styles['score']}>{scores[idx]}</span>
+              </div>
+            ))}
+          </div>
+          <div className={styles['winner-announcement']}><h3>{winnerText}</h3></div>
+
+        </div>
+        <div className={modalStyles['modal-footer']}>
+          <button className={styles['btn'] + ' ' + styles['btn--warning']} onClick={onConfirm} aria-label="Bestätigen">Bestätigen</button>
+          <button className={styles['btn'] + ' ' + styles['btn--primary']} onClick={onRematch} aria-label="Rematch">Rematch</button>
+          <button className={styles['btn']} onClick={onClose} aria-label="Abbrechen">Abbrechen</button>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default GameCompletionModal; 

src/components/GameDetail.tsx

@@ -0,0 +1,105 @@
+import { h } from 'preact';
+import { useState } from 'preact/hooks';
+import styles from './GameDetail.module.css';
+import type { Game, EndlosGame } from '@lib/domain/types';
+
+interface GameDetailProps {
+  game: Game | undefined;
+  onFinishGame: () => void;
+  onUpdateScore: (player: number, change: number) => void;
+  onUpdateGame?: (game: EndlosGame) => void;
+  onUndo?: () => void;
+  onForfeit?: () => void;
+  onBack: () => void;
+}
+
+/**
+ * Game detail view for a single game.
+ */
+const GameDetail = ({ game, onFinishGame, onUpdateScore, onUpdateGame, onUndo, onForfeit, onBack }: GameDetailProps) => {
+  if (!game) return null;
+
+  const handleScoreUpdate = (playerIndex: number, change: number) => {
+    onUpdateScore(playerIndex, change);
+    // Silent update; toast notifications removed
+  };
+
+
+  const isCompleted = game.status === 'completed';
+  
+  const playerNames = [game.player1, game.player2, game.player3].filter(Boolean);
+  const scores = [game.score1, game.score2, game.score3].filter((_, i) => playerNames[i]);
+
+  return (
+    <div className={styles['game-detail']}>
+      <div className={styles['game-title']}>
+        {game.gameType}{game.raceTo ? ` | Race to ${game.raceTo}` : ''}
+      </div>
+      <div className={styles['scores-container']}>
+        {playerNames.map((name, idx) => {
+          const currentScore = scores[idx];
+          const progressPercentage = game.raceTo ? Math.min((currentScore / game.raceTo) * 100, 100) : 0;
+          
+          return (
+            <div
+              className={styles['player-score'] + (name === 'Fränky' ? ' ' + styles['franky'] : '')}
+              key={name + idx}
+            >
+              <span className={styles['player-name']}>
+                {name}
+                {(() => {
+                  const order = (game as any).breakOrder as number[] | undefined;
+                  const breakerIdx = (game as any).currentBreakerIdx as number | undefined;
+                  if (order && typeof breakerIdx === 'number' && order[breakerIdx] === idx + 1) {
+                    return <span title="Break" aria-label="Break" style={{ display: 'inline-block', width: '1em', height: '1em', borderRadius: '50%', background: '#fff', marginLeft: 6, verticalAlign: 'middle' }} />;
+                  }
+                  return null;
+                })()}
+              </span>
+              <div className={styles['progress-bar']}>
+                <div 
+                  className={styles['progress-fill']} 
+                  style={{ width: `${progressPercentage}%` }}
+                />
+              </div>
+              <span
+                className={styles['score']}
+                id={`score${idx + 1}`}
+                onClick={() => !isCompleted && onUpdateScore(idx + 1, 1)}
+                onKeyDown={(e) => {
+                  if (!isCompleted && (e.key === 'Enter' || e.key === ' ')) {
+                    e.preventDefault();
+                    onUpdateScore(idx + 1, 1);
+                  }
+                }}
+                role="button"
+                tabIndex={isCompleted ? -1 : 0}
+                aria-label={`Aktueller Punktestand für ${name}: ${scores[idx]}. Klicken oder Enter drücken zum Erhöhen.`}
+              >
+                {scores[idx]}
+              </span>
+              {/* +/- buttons removed per issue #29. Tap score to +1; use Undo to revert. */}
+            </div>
+          );
+        })}
+      </div>
+      <div className={styles['game-detail-controls']}>
+        <button className="btn" onClick={onBack} aria-label="Zurück zur Liste">Zurück zur Liste</button>
+        {onUndo && (
+          <button 
+            className="btn btn--secondary" 
+            onClick={() => {
+              onUndo();
+            }}
+            aria-label="Rückgängig"
+          >
+            ↶ Rückgängig
+          </button>
+        )}
+        <button className="btn" disabled={isCompleted} onClick={onFinishGame} aria-label={isCompleted ? 'Abgeschlossen' : 'Spiel beenden'}>{isCompleted ? 'Abgeschlossen' : 'Spiel beenden'}</button>
+      </div>
+    </div>
+  );
+};
+
+export default GameDetail; 

src/components/GameList.tsx

@@ -0,0 +1,129 @@
+import { h } from 'preact';
+import { Card } from '@lib/ui/Card';
+import { Button } from '@lib/ui/Button';
+import styles from './GameList.module.css';
+import type { Game, GameFilter, StandardGame } from '@lib/domain/types';
+
+interface GameListProps {
+  games: Game[];
+  filter: GameFilter;
+  setFilter: (filter: GameFilter) => void;
+  onShowGameDetail: (gameId: number) => void;
+  onDeleteGame: (gameId: number) => void;
+}
+
+export default function GameList({ 
+  games, 
+  filter = 'all', 
+  setFilter, 
+  onShowGameDetail, 
+  onDeleteGame 
+}: GameListProps) {
+  const filteredGames = games
+    .filter(game => {
+      if (filter === 'active') return game.status === 'active';
+      if (filter === 'completed') return game.status === 'completed';
+      return true;
+    })
+    .sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime());
+
+  const getPlayerNames = (game: Game): string => {
+    if ('players' in game) {
+      return game.players.map(p => p.name).join(' vs ');
+    } else {
+      const standardGame = game as StandardGame;
+      return standardGame.player3
+        ? `${standardGame.player1} vs ${standardGame.player2} vs ${standardGame.player3}`
+        : `${standardGame.player1} vs ${standardGame.player2}`;
+    }
+  };
+
+  const getScores = (game: Game): string => {
+    if ('players' in game) {
+      return game.players.map(p => p.score).join(' - ');
+    } else {
+      const standardGame = game as StandardGame;
+      return standardGame.player3
+        ? `${standardGame.score1} - ${standardGame.score2} - ${standardGame.score3}`
+        : `${standardGame.score1} - ${standardGame.score2}`;
+    }
+  };
+
+  const filterButtons = [
+    { key: 'all' as const, label: 'Alle', ariaLabel: 'Alle Spiele anzeigen' },
+    { key: 'active' as const, label: 'Aktiv', ariaLabel: 'Nur aktive Spiele anzeigen' },
+    { key: 'completed' as const, label: 'Abgeschlossen', ariaLabel: 'Nur abgeschlossene Spiele anzeigen' },
+  ];
+
+  return (
+    <div className={styles['game-list']}>
+      <div className={styles['filter-buttons']}>
+        {filterButtons.map(({ key, label, ariaLabel }) => (
+          <Button
+            key={key}
+            variant={filter === key ? 'primary' : 'secondary'}
+            size="small"
+            onClick={() => setFilter(key)}
+            aria-label={ariaLabel}
+          >
+            {label}
+          </Button>
+        ))}
+      </div>
+      
+      <div className={styles['games-container']}>
+        {filteredGames.length === 0 ? (
+          <div className={styles['empty-state']}>Keine Spiele vorhanden</div>
+        ) : (
+          filteredGames.map(game => {
+          const playerNames = getPlayerNames(game);
+          const scores = getScores(game);
+          
+          return (
+            <Card
+              key={game.id}
+              variant="elevated"
+              className={
+                styles['game-item'] + ' ' + (game.status === 'completed' ? styles['completed'] : styles['active'])
+              }
+            >
+              <div 
+                className={styles['game-info']} 
+                onClick={() => onShowGameDetail(game.id)}
+                onKeyDown={(e) => {
+                  if (e.key === 'Enter' || e.key === ' ') {
+                    e.preventDefault();
+                    onShowGameDetail(game.id);
+                  }
+                }}
+                role="button" 
+                tabIndex={0} 
+                aria-label={`Details für Spiel ${playerNames}`}
+                aria-describedby={`game-${game.id}-description`}
+              >
+                <div className={styles['game-type']}>
+                  {game.gameType}{game.raceTo ? ` | ${game.raceTo}` : ''}
+                </div>
+                <div className={styles['player-names']}>{playerNames}</div>
+                <div className={styles['game-scores']}>{scores}</div>
+                <div id={`game-${game.id}-description`} className="sr-only">
+                  {game.gameType} Spiel zwischen {playerNames} mit dem Stand {scores}. 
+                  {game.status === 'completed' ? 'Abgeschlossen' : 'Aktiv'}
+                </div>
+              </div>
+              <Button
+                variant="danger"
+                size="small"
+                onClick={() => onDeleteGame(game.id)}
+                aria-label={`Spiel löschen: ${playerNames}`}
+              >
+                🗑
+              </Button>
+            </Card>
+          );
+        })
+        )}
+      </div>
+    </div>
+  );
+}

src/components/NewGame.tsx

@@ -0,0 +1,77 @@
+import { h } from 'preact';
+import { useState, useEffect, useRef } from 'preact/hooks';
+import styles from './NewGame.module.css';
+import modalStyles from './PlayerSelectModal.module.css';
+import { PlayerSelectModal } from './new-game/PlayerSelectModal';
+import { 
+  UI_CONSTANTS, 
+  WIZARD_STEPS, 
+  GAME_TYPE_OPTIONS, 
+  RACE_TO_QUICK_PICKS, 
+  RACE_TO_DEFAULT, 
+  RACE_TO_INFINITY,
+  ERROR_MESSAGES,
+  ARIA_LABELS,
+  FORM_CONFIG,
+  ERROR_STYLES
+} from '../utils/constants';
+import { Player1Step } from './new-game/Player1Step';
+import { Player2Step } from './new-game/Player2Step';
+import { Player3Step } from './new-game/Player3Step';
+import { GameTypeStep } from './new-game/GameTypeStep';
+import { RaceToStep } from './new-game/RaceToStep';
+import { BreakRuleStep } from './new-game/BreakRuleStep';
+import { BreakOrderStep } from './new-game/BreakOrderStep';
+import type { BreakRule } from '@lib/domain/types';
+
+// PlayerSelectModal moved to ./new-game/PlayerSelectModal
+
+interface PlayerStepProps {
+  playerNameHistory: string[];
+  onNext: (name: string) => void;
+  onCancel: () => void;
+  initialValue?: string;
+}
+
+// Player1Step moved to ./new-game/Player1Step
+
+// Player2Step moved to ./new-game/Player2Step
+
+// Player3Step moved to ./new-game/Player3Step
+
+interface GameTypeStepProps {
+  onNext: (type: string) => void;
+  onCancel: () => void;
+  initialValue?: string;
+}
+
+
+interface RaceToStepProps {
+  onNext: (raceTo: string | number) => void;
+  onCancel: () => void;
+  initialValue?: string | number;
+  gameType?: string;
+}
+
+// GameTypeStep and RaceToStep moved to ./new-game
+
+interface BreakRuleStepProps {
+  onNext: (rule: BreakRule) => void;
+  onCancel: () => void;
+  initialValue?: BreakRule | 'winnerbreak';
+}
+
+// BreakRuleStep moved to ./new-game/BreakRuleStep
+
+interface BreakOrderStepProps {
+  players: string[];
+  rule: BreakRule;
+  onNext: (first: number, second?: number) => void;
+  onCancel: () => void;
+  initialFirst?: number;
+  initialSecond?: number;
+}
+
+// BreakOrderStep moved to ./new-game/BreakOrderStep
+
+export { Player1Step, Player2Step, Player3Step, GameTypeStep, BreakRuleStep, BreakOrderStep, RaceToStep };

src/components/new-game/BreakOrderStep.tsx

@@ -0,0 +1,113 @@
+import { h } from 'preact';
+import { useEffect, useState } from 'preact/hooks';
+import styles from '../NewGame.module.css';
+import type { BreakRule } from '@lib/domain/types';
+
+interface BreakOrderStepProps {
+  players: string[];
+  rule: BreakRule;
+  onNext: (first: number, second?: number) => void;
+  onCancel: () => void;
+  initialFirst?: number;
+  initialSecond?: number;
+}
+
+export const BreakOrderStep = ({ players, rule, onNext, onCancel, initialFirst = 1, initialSecond }: BreakOrderStepProps) => {
+  const playerCount = players.filter(Boolean).length;
+  const [first, setFirst] = useState<number>(initialFirst);
+  const [second, setSecond] = useState<number | undefined>(initialSecond);
+
+  useEffect(() => {
+    if (!initialSecond && rule === 'wechselbreak' && playerCount === 3) {
+      setSecond(2);
+    }
+  }, [initialSecond, rule, playerCount]);
+
+  const handleFirst = (idx: number) => {
+    setFirst(idx);
+    if (rule === 'winnerbreak' || (rule === 'wechselbreak' && playerCount === 2)) {
+      onNext(idx);
+    }
+  };
+
+  const handleSecond = (idx: number) => {
+    setSecond(idx);
+    onNext(first, idx);
+  };
+
+  return (
+    <form className={styles['new-game-form']} aria-label="Break-Reihenfolge wählen">
+      <div className={styles['screen-title']}>Wer hat den ersten Anstoss?</div>
+      <div className={styles['progress-indicator']} style={{ marginBottom: 24 }}>
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot'] + ' ' + styles['active']} />
+      </div>
+      <div style={{ marginBottom: 16, fontWeight: 600 }}>Wer hat den ersten Anstoss?</div>
+      <div style={{ display: 'flex', gap: 12, flexWrap: 'wrap' }}>
+        {players.filter(Boolean).map((name, idx) => (
+          <button
+            key={`first-${idx}`}
+            type="button"
+            className={`${styles['quick-pick-btn']} ${first === (idx + 1) ? styles['selected'] : ''}`}
+            onClick={() => handleFirst(idx + 1)}
+            aria-label={`Zuerst: ${name}`}
+          >
+            {name}
+          </button>
+        ))}
+      </div>
+      {rule === 'wechselbreak' && playerCount === 3 && (
+        <>
+          <div style={{ marginTop: 24, marginBottom: 16, fontWeight: 600 }}>Wer hat den zweiten Anstoss?</div>
+          <div style={{ display: 'flex', gap: 12, flexWrap: 'wrap' }}>
+            {players.filter(Boolean).map((name, idx) => (
+              <button
+                key={`second-${idx}`}
+                type="button"
+                className={`${styles['quick-pick-btn']} ${second === (idx + 1) ? styles['selected'] : ''}`}
+                onClick={() => handleSecond(idx + 1)}
+                aria-label={`Zweites Break: ${name}`}
+              >
+                {name}
+              </button>
+            ))}
+          </div>
+        </>
+      )}
+      <div className={styles['arrow-nav']} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginTop: 48 }}>
+        <button type="button" className={styles['arrow-btn']} aria-label="Zurück" onClick={onCancel} style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}>
+          &#8592;
+        </button>
+        <button
+          type="button"
+          className={styles['arrow-btn']}
+          aria-label="Weiter"
+          onClick={() => {
+            if (rule === 'wechselbreak' && playerCount === 3) {
+              if (first > 0 && (second ?? 0) > 0) {
+                handleSecond(second as number);
+              }
+            } else {
+              if (first > 0) {
+                onNext(first);
+              }
+            }
+          }}
+          disabled={
+            (rule === 'wechselbreak' && playerCount === 3) ? !(first > 0 && (second ?? 0) > 0) : !(first > 0)
+          }
+          style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer', opacity: ((rule === 'wechselbreak' && playerCount === 3) ? !(first > 0 && (second ?? 0) > 0) : !(first > 0)) ? 0.5 : 1 }}
+        >
+          &#8594;
+        </button>
+      </div>
+    </form>
+  );
+};
+
+

src/components/new-game/BreakRuleStep.tsx

@@ -0,0 +1,55 @@
+import { h } from 'preact';
+import { useState } from 'preact/hooks';
+import styles from '../NewGame.module.css';
+import type { BreakRule } from '@lib/domain/types';
+
+interface BreakRuleStepProps {
+  onNext: (rule: BreakRule) => void;
+  onCancel: () => void;
+  initialValue?: BreakRule;
+}
+
+export const BreakRuleStep = ({ onNext, onCancel, initialValue = 'winnerbreak' }: BreakRuleStepProps) => {
+  const [rule, setRule] = useState<BreakRule>(initialValue ?? 'winnerbreak');
+
+  return (
+    <form className={styles['new-game-form']} aria-label="Break-Regel wählen">
+      <div className={styles['screen-title']}>Break-Regel wählen</div>
+      <div className={styles['progress-indicator']} style={{ marginBottom: 24 }}>
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot'] + ' ' + styles['active']} />
+        <span className={styles['progress-dot']} />
+      </div>
+      <div style={{ display: 'flex', gap: 12, marginTop: 12 }}>
+        {[
+          { key: 'winnerbreak', label: 'Winnerbreak' },
+          { key: 'wechselbreak', label: 'Wechselbreak' },
+        ].map(opt => (
+          <button
+            key={opt.key}
+            type="button"
+            className={`${styles['quick-pick-btn']} ${rule === (opt.key as BreakRule) ? styles['selected'] : ''}`}
+            onClick={() => { setRule(opt.key as BreakRule); onNext(opt.key as BreakRule); }}
+            aria-label={`Break-Regel wählen: ${opt.label}`}
+          >
+            {opt.label}
+          </button>
+        ))}
+      </div>
+      <div className={styles['arrow-nav']} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginTop: 48 }}>
+        <button type="button" className={styles['arrow-btn']} aria-label="Zurück" onClick={onCancel} style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}>
+          &#8592;
+        </button>
+        <button type="button" className={styles['arrow-btn']} aria-label="Weiter" onClick={() => onNext(rule)} style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}>
+          &#8594;
+        </button>
+      </div>
+    </form>
+  );
+};
+
+

src/components/screens/GameDetailScreen.tsx

@@ -0,0 +1,46 @@
+import { h } from 'preact';
+import { Screen } from '@lib/ui/Layout';
+import GameDetail from '@lib/features/game-detail/GameDetail';
+import type { Game, EndlosGame } from '@lib/domain/types';
+
+interface GameDetailScreenProps {
+  game?: Game;
+  onUpdateScore: (player: number, change: number) => void;
+  onFinishGame: () => void;
+  onUpdateGame: (game: EndlosGame) => void;
+  onUndo: () => void;
+  onForfeit: () => void;
+  onBack: () => void;
+}
+
+export default function GameDetailScreen({
+  game,
+  onUpdateScore,
+  onFinishGame,
+  onUpdateGame,
+  onUndo,
+  onForfeit,
+  onBack,
+}: GameDetailScreenProps) {
+  if (!game) {
+    return (
+      <Screen>
+        <div>Game not found</div>
+      </Screen>
+    );
+  }
+
+  return (
+    <Screen>
+      <GameDetail
+        game={game}
+        onUpdateScore={onUpdateScore}
+        onFinishGame={onFinishGame}
+        onUpdateGame={onUpdateGame}
+        onUndo={onUndo}
+        onForfeit={onForfeit}
+        onBack={onBack}
+      />
+    </Screen>
+  );
+}

src/components/screens/GameListScreen.tsx

@@ -0,0 +1,47 @@
+import { h } from 'preact';
+import { Button } from '@lib/ui/Button';
+import { Screen } from '@lib/ui/Layout';
+import GameList from '@lib/features/game-list/GameList';
+import type { Game, GameFilter } from '@lib/domain/types';
+
+interface GameListScreenProps {
+  games: Game[];
+  filter: GameFilter;
+  onFilterChange: (filter: GameFilter) => void;
+  onShowGameDetail: (gameId: number) => void;
+  onDeleteGame: (gameId: number) => void;
+  onShowNewGame: () => void;
+}
+
+export default function GameListScreen({
+  games,
+  filter,
+  onFilterChange,
+  onShowGameDetail,
+  onDeleteGame,
+  onShowNewGame,
+}: GameListScreenProps) {
+  return (
+    <Screen>
+      <div style={{ flexShrink: 0 }}>
+        <Button
+          variant="primary"
+          size="large"
+          onClick={onShowNewGame}
+          aria-label="Neues Spiel starten"
+          style={{ width: '100%', marginBottom: '24px' }}
+        >
+          + Neues Spiel
+        </Button>
+      </div>
+      
+      <GameList
+        games={games}
+        filter={filter}
+        onShowGameDetail={onShowGameDetail}
+        onDeleteGame={onDeleteGame}
+        setFilter={onFilterChange}
+      />
+    </Screen>
+  );
+}

src/components/screens/NewGameScreen.tsx

@@ -0,0 +1,181 @@
+import { h } from 'preact';
+import { Screen } from '@lib/ui/Layout';
+import {
+  Player1Step,
+  Player2Step,
+  Player3Step,
+  GameTypeStep,
+  BreakRuleStep,
+  BreakOrderStep,
+  RaceToStep,
+} from '@lib/features/new-game';
+import type { NewGameStep, NewGameData, GameType } from '@lib/domain/types';
+import { GAME_TYPES, RACE_TO_DEFAULT } from '@lib/domain/constants';
+
+interface NewGameScreenProps {
+  step: NewGameStep;
+  data: NewGameData;
+  playerHistory: string[];
+  onStepChange: (step: NewGameStep) => void;
+  onDataChange: (data: Partial<NewGameData>) => void;
+  onCreateGame: (data: NewGameData) => void;
+  onCancel: () => void;
+  onShowValidation: (message: string) => void;
+}
+
+export default function NewGameScreen({
+  step,
+  data,
+  playerHistory,
+  onStepChange,
+  onDataChange,
+  onCreateGame,
+  onCancel,
+  onShowValidation,
+}: NewGameScreenProps) {
+  const handlePlayer1Next = (name: string) => {
+    onDataChange({ player1: name });
+    onStepChange('player2');
+  };
+
+  const handlePlayer2Next = (name: string) => {
+    onDataChange({ player2: name });
+    onStepChange('player3');
+  };
+
+  const handlePlayer3Next = (name: string) => {
+    onDataChange({ player3: name });
+    onStepChange('gameType');
+  };
+
+  const handleGameTypeNext = (type: string) => {
+    const selectedType = type as GameType;
+    const match = GAME_TYPES.find((item) => item.value === selectedType);
+    const defaultRace = match ? String(match.defaultRaceTo) : String(RACE_TO_DEFAULT);
+
+    onDataChange({
+      gameType: selectedType,
+      raceTo: defaultRace,
+    });
+    onStepChange('raceTo');
+  };
+
+  const handleBreakRuleNext = (rule: 'winnerbreak' | 'wechselbreak') => {
+    onDataChange({ breakRule: rule });
+    try { localStorage.setItem('lastBreakRule', rule); } catch {}
+    onStepChange('breakOrder');
+  };
+
+  const handleBreakOrderNext = (first: number, second?: number) => {
+    const finalData = { ...data, breakFirst: first, breakSecond: second ?? '' } as any;
+    onDataChange({ breakFirst: first, breakSecond: second ?? '' });
+    try {
+      localStorage.setItem('lastBreakFirst', String(first));
+      if (second) localStorage.setItem('lastBreakSecond', String(second));
+    } catch {}
+    onCreateGame(finalData as any);
+  };
+
+  const handleRaceToNext = (raceTo: string | number) => {
+    // Convert to string, handling Infinity case explicitly
+    const raceToStr = raceTo === Infinity ? 'Infinity' : String(raceTo);
+    const finalData = { ...data, raceTo: raceToStr };
+    // After race to, go to break rule selection
+    onDataChange({ raceTo: raceToStr });
+    onStepChange('breakRule');
+  };
+
+  const handleStepBack = () => {
+    switch (step) {
+      case 'player2':
+        onStepChange('player1');
+        break;
+      case 'player3':
+        onStepChange('player2');
+        break;
+      case 'gameType':
+        onStepChange('player3');
+        break;
+      case 'raceTo':
+        onStepChange('gameType');
+        break;
+      case 'breakRule':
+        onStepChange('raceTo');
+        break;
+      case 'breakOrder':
+        onStepChange('breakRule');
+        break;
+      default:
+        onCancel();
+    }
+  };
+
+  return (
+    <Screen>
+      {step === 'player1' && (
+        <Player1Step
+          playerNameHistory={playerHistory}
+          onNext={handlePlayer1Next}
+          onCancel={onCancel}
+          initialValue={data.player1}
+        />
+      )}
+      
+      {step === 'player2' && (
+        <Player2Step
+          playerNameHistory={playerHistory}
+          onNext={handlePlayer2Next}
+          onCancel={handleStepBack}
+          initialValue={data.player2}
+        />
+      )}
+      
+      {step === 'player3' && (
+        <Player3Step
+          playerNameHistory={playerHistory}
+          onNext={handlePlayer3Next}
+          onCancel={handleStepBack}
+          initialValue={data.player3}
+        />
+      )}
+      
+      {step === 'gameType' && (
+        <GameTypeStep
+          onNext={handleGameTypeNext}
+          onCancel={handleStepBack}
+          initialValue={data.gameType}
+        />
+      )}
+
+      
+      
+      {step === 'raceTo' && (
+        <RaceToStep
+          onNext={handleRaceToNext}
+          onCancel={handleStepBack}
+          initialValue={data.raceTo}
+          gameType={data.gameType}
+        />
+      )}
+
+      {step === 'breakRule' && (
+        <BreakRuleStep
+          onNext={handleBreakRuleNext}
+          onCancel={handleStepBack}
+          initialValue={(data.breakRule as any) || (typeof window !== 'undefined' ? (localStorage.getItem('lastBreakRule') as any) : 'winnerbreak') || 'winnerbreak'}
+        />
+      )}
+
+      {step === 'breakOrder' && (
+        <BreakOrderStep
+          players={[data.player1, data.player2, data.player3]}
+          rule={(data.breakRule as any) || 'winnerbreak'}
+          onNext={handleBreakOrderNext}
+          onCancel={handleStepBack}
+          initialFirst={(typeof window !== 'undefined' && localStorage.getItem('lastBreakFirst')) ? parseInt(localStorage.getItem('lastBreakFirst')!, 10) : 1}
+          initialSecond={(typeof window !== 'undefined' && localStorage.getItem('lastBreakSecond')) ? parseInt(localStorage.getItem('lastBreakSecond')!, 10) : undefined}
+        />
+      )}
+    </Screen>
+  );
+}

src/components/ui/Button.tsx

@@ -0,0 +1,32 @@
+import { h } from 'preact';
+import type { ButtonProps } from '@lib/ui/types';
+import styles from './Button.module.css';
+
+export function Button({ 
+  variant = 'secondary', 
+  size = 'medium', 
+  disabled = false, 
+  children, 
+  onClick,
+  'aria-label': ariaLabel,
+  ...rest 
+}: ButtonProps) {
+  const classNames = [
+    styles.button,
+    styles[variant],
+    styles[size],
+    disabled && styles.disabled,
+  ].filter(Boolean).join(' ');
+
+  return (
+    <button
+      className={classNames}
+      onClick={onClick}
+      disabled={disabled}
+      aria-label={ariaLabel}
+      {...rest}
+    >
+      {children}
+    </button>
+  );
+}

src/hooks/useGameState.ts

@@ -0,0 +1,121 @@
+import { useState, useEffect, useCallback } from 'preact/hooks';
+import type { Game, NewGameData, GameFilter } from '@lib/domain/types';
+import { GameService } from '@lib/data/gameService';
+
+export function useGameState() {
+  const [games, setGames] = useState<Game[]>([]);
+  const [filter, setFilter] = useState<GameFilter>('all');
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  // Load games from IndexedDB on mount
+  useEffect(() => {
+    const loadGames = async () => {
+      try {
+        setLoading(true);
+        setError(null);
+        const savedGames = await GameService.loadGames();
+        setGames(savedGames);
+      } catch (err) {
+        console.error('Failed to load games:', err);
+        setError('Failed to load games from storage');
+      } finally {
+        setLoading(false);
+      }
+    };
+
+    loadGames();
+  }, []);
+
+  const addGame = useCallback(async (gameData: NewGameData): Promise<number> => {
+    try {
+      const newGame = GameService.createGame(gameData);
+      await GameService.saveGame(newGame);
+      setGames(prevGames => [newGame, ...prevGames]);
+      return newGame.id;
+    } catch (err) {
+      console.error('Failed to add game:', err);
+      setError('Failed to save new game');
+      throw err;
+    }
+  }, []);
+
+  const updateGame = useCallback(async (gameId: number, updatedGame: Game) => {
+    try {
+      await GameService.saveGame(updatedGame);
+      setGames(prevGames => 
+        prevGames.map(game => game.id === gameId ? updatedGame : game)
+      );
+    } catch (err) {
+      console.error('Failed to update game:', err);
+      setError('Failed to save game changes');
+      throw err;
+    }
+  }, []);
+
+  const deleteGame = useCallback(async (gameId: number) => {
+    try {
+      await GameService.deleteGame(gameId);
+      setGames(prevGames => prevGames.filter(game => game.id !== gameId));
+    } catch (err) {
+      console.error('Failed to delete game:', err);
+      setError('Failed to delete game');
+      throw err;
+    }
+  }, []);
+
+  const getGameById = useCallback((gameId: number): Game | undefined => {
+    return games.find(game => game.id === gameId);
+  }, [games]);
+
+  const getFilteredGames = useCallback(async (): Promise<Game[]> => {
+    try {
+      return await GameService.getGamesByFilter(filter);
+    } catch (err) {
+      console.error('Failed to get filtered games:', err);
+      setError('Failed to load filtered games');
+      return games.filter(game => {
+        if (filter === 'active') return game.status === 'active';
+        if (filter === 'completed') return game.status === 'completed';
+        return true;
+      });
+    }
+  }, [filter, games]);
+
+  const getPlayerNameHistory = useCallback((): string[] => {
+    // Extract player names from current games for immediate UI use
+    const nameLastUsed: Record<string, number> = {};
+    
+    games.forEach(game => {
+      const timestamp = new Date(game.updatedAt).getTime();
+      
+      if ('players' in game) {
+        // EndlosGame
+        game.players.forEach(player => {
+          nameLastUsed[player.name] = Math.max(nameLastUsed[player.name] || 0, timestamp);
+        });
+      } else {
+        // StandardGame
+        if (game.player1) nameLastUsed[game.player1] = Math.max(nameLastUsed[game.player1] || 0, timestamp);
+        if (game.player2) nameLastUsed[game.player2] = Math.max(nameLastUsed[game.player2] || 0, timestamp);
+        if (game.player3) nameLastUsed[game.player3] = Math.max(nameLastUsed[game.player3] || 0, timestamp);
+      }
+    });
+
+    return [...new Set(Object.keys(nameLastUsed))].sort((a, b) => nameLastUsed[b] - nameLastUsed[a]);
+  }, [games]);
+
+  return {
+    games,
+    filter,
+    setFilter,
+    loading,
+    error,
+    addGame,
+    updateGame,
+    deleteGame,
+    getGameById,
+    getFilteredGames,
+    getPlayerNameHistory,
+  };
+}

src/hooks/useModal.ts

@@ -0,0 +1,60 @@
+import { useState, useCallback } from 'preact/hooks';
+import type { ModalState, ValidationState, CompletionModalState } from '@lib/ui/types';
+import type { Game } from '@lib/domain/types';
+
+export function useModal() {
+  const [modal, setModal] = useState<ModalState>({ open: false, gameId: null });
+
+  const openModal = useCallback((gameId?: number) => {
+    setModal({ open: true, gameId });
+  }, []);
+
+  const closeModal = useCallback(() => {
+    setModal({ open: false, gameId: null });
+  }, []);
+
+  return {
+    modal,
+    openModal,
+    closeModal,
+  };
+}
+
+export function useValidationModal() {
+  const [validation, setValidation] = useState<ValidationState>({ open: false, message: '' });
+
+  const showValidation = useCallback((message: string) => {
+    setValidation({ open: true, message });
+  }, []);
+
+  const closeValidation = useCallback(() => {
+    setValidation({ open: false, message: '' });
+  }, []);
+
+  return {
+    validation,
+    showValidation,
+    closeValidation,
+  };
+}
+
+export function useCompletionModal() {
+  const [completionModal, setCompletionModal] = useState<CompletionModalState>({ 
+    open: false, 
+    game: null 
+  });
+
+  const openCompletionModal = useCallback((game: Game) => {
+    setCompletionModal({ open: true, game });
+  }, []);
+
+  const closeCompletionModal = useCallback(() => {
+    setCompletionModal({ open: false, game: null });
+  }, []);
+
+  return {
+    completionModal,
+    openCompletionModal,
+    closeCompletionModal,
+  };
+}

src/hooks/useNavigation.ts

@@ -0,0 +1,82 @@
+import { useState, useCallback } from 'preact/hooks';
+import type { NewGameStep, NewGameData } from '@lib/domain/types';
+
+type Screen = 'game-list' | 'new-game' | 'game-detail';
+
+export function useNavigation() {
+  const [screen, setScreen] = useState<Screen>('game-list');
+  const [currentGameId, setCurrentGameId] = useState<number | null>(null);
+
+  const showGameList = useCallback(() => {
+    setScreen('game-list');
+    setCurrentGameId(null);
+  }, []);
+
+  const showNewGame = useCallback(() => {
+    setScreen('new-game');
+    setCurrentGameId(null);
+  }, []);
+
+  const showGameDetail = useCallback((gameId: number) => {
+    setCurrentGameId(gameId);
+    setScreen('game-detail');
+  }, []);
+
+  return {
+    screen,
+    currentGameId,
+    showGameList,
+    showNewGame,
+    showGameDetail,
+  };
+}
+
+export function useNewGameWizard() {
+  const [newGameStep, setNewGameStep] = useState<NewGameStep>(null);
+  const [newGameData, setNewGameData] = useState<NewGameData>({
+    player1: '',
+    player2: '',
+    player3: '',
+    gameType: '',
+    raceTo: '',
+  });
+
+  const startWizard = useCallback(() => {
+    setNewGameStep('player1');
+    setNewGameData({
+      player1: '',
+      player2: '',
+      player3: '',
+      gameType: '',
+      raceTo: '',
+    });
+  }, []);
+
+  const resetWizard = useCallback(() => {
+    setNewGameStep(null);
+    setNewGameData({
+      player1: '',
+      player2: '',
+      player3: '',
+      gameType: '',
+      raceTo: '',
+    });
+  }, []);
+
+  const updateGameData = useCallback((data: Partial<NewGameData>) => {
+    setNewGameData(prev => ({ ...prev, ...data }));
+  }, []);
+
+  const nextStep = useCallback((step: NewGameStep) => {
+    setNewGameStep(step);
+  }, []);
+
+  return {
+    newGameStep,
+    newGameData,
+    startWizard,
+    resetWizard,
+    updateGameData,
+    nextStep,
+  };
+}

src/layouts/BaseLayout.astro

@@ -0,0 +1,70 @@
+---
+---
+
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="viewport" content="interactive-widget=resizes-content">
+    <title>BSC Score</title>
+    <style>
+      body {
+        margin: 0;
+        padding: 0;
+        box-sizing: border-box;
+      }
+      .layout-header {
+        position: fixed;
+        top: 0;
+        left: 0;
+        width: 100vw;
+        height: 10vh;
+        background: #222;
+        color: #fff;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        z-index: 1000;
+      }
+      .layout-footer {
+        position: fixed;
+        bottom: 0;
+        left: 0;
+        width: 100vw;
+        height: 10vh;
+        background: #222;
+        color: #fff;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        z-index: 1000;
+      }
+      .layout-main {
+        min-height: 80vh;
+        margin-top: 10vh;
+        margin-bottom: 10vh;
+        width: 100vw;
+        box-sizing: border-box;
+      }
+    </style>
+  </head>
+  <body>
+    <header class="layout-header">
+      <!-- BUTTONS PLACEHOLDER -->
+      <div style="width:100%; display:flex; justify-content:center; gap:1rem;">
+        <button disabled>Button 1</button>
+        <button disabled>Button 2</button>
+        <button disabled>Button 3</button>
+      </div>
+    </header>
+    <main class="layout-main">
+      <slot />
+    </main>
+    <footer class="layout-footer">
+      <!-- INFO PLACEHOLDER -->
+      <div style="width:100%; text-align:center;">
+        <span>Informational text goes here. &copy; {new Date().getFullYear()} BSC Score</span>
+      </div>
+    </footer>
+  </body>
+</html> 

src/lib/data/README.md

@@ -0,0 +1,33 @@
+# Data Layer (`@lib/data`)
+
+Responsible for persistence and data access abstractions. All I/O lives here.
+
+## Modules
+
+- `gameService.ts`
+  - High-level repository for CRUD operations on games.
+  - Bridges domain rules with `IndexedDBService`.
+  - Provides helpers: `loadGames`, `saveGame`, `createGame`, `updateGameScore`, `isGameCompleted`, `getGameWinner`, etc.
+- `indexedDBService.ts`
+  - Low-level IndexedDB wrapper with schema management and convenience indices.
+  - Exposes granular operations (`loadGame`, `deleteGame`, `getGamesByFilter`, `updatePlayerStats`, …).
+- `testing/testIndexedDB.ts`
+  - Browser-side harness to validate IndexedDB flows manually.
+
+## Guidance
+
+- Prefer calling `GameService` from UI/state hooks.  
+  It encapsulates migration logic (localStorage fallback) and player stats updates.
+- Keep new persistence concerns behind small classes or factory functions under `@lib/data`.
+- When a data function starts bleeding UI concerns, move that logic upward into `@lib/state`.
+
+## Example
+
+```ts
+import { GameService } from '@lib/data';
+
+const games = await GameService.loadGames();
+await GameService.saveGame(updatedGame);
+```
+
+

src/lib/data/gameService.ts

@@ -0,0 +1,330 @@
+import type {
+  Game,
+  GameType,
+  StandardGame,
+  EndlosGame,
+  NewGameData,
+  BreakRule,
+} from '@lib/domain/types';
+import { IndexedDBService } from './indexedDBService';
+
+const LOCAL_STORAGE_KEY = 'bscscore_games';
+
+export class GameService {
+  /**
+   * Load games from IndexedDB (with localStorage fallback)
+   */
+  static async loadGames(): Promise<Game[]> {
+    try {
+      // Try IndexedDB first
+      await IndexedDBService.init();
+      const games = await IndexedDBService.loadGames();
+      
+      if (games.length > 0) {
+        console.log(`Loaded ${games.length} games from IndexedDB`);
+        return games;
+      }
+      
+      // Fallback to localStorage if IndexedDB is empty
+      console.log('IndexedDB empty, checking localStorage for migration...');
+      return this.migrateFromLocalStorage();
+      
+    } catch (error) {
+      console.error('Error loading games from IndexedDB:', error);
+      // Fallback to localStorage
+      return this.migrateFromLocalStorage();
+    }
+  }
+
+  /**
+   * Migrate data from localStorage to IndexedDB
+   */
+  private static async migrateFromLocalStorage(): Promise<Game[]> {
+    try {
+      const savedGames = localStorage.getItem(LOCAL_STORAGE_KEY);
+      if (!savedGames) return [];
+      
+      const parsed = JSON.parse(savedGames);
+      if (!Array.isArray(parsed)) {
+        console.warn('Invalid games data in localStorage, resetting to empty array');
+        return [];
+      }
+      
+      // Migrate to IndexedDB
+      console.log(`Migrating ${parsed.length} games from localStorage to IndexedDB...`);
+      for (const game of parsed) {
+        await IndexedDBService.saveGame(game);
+      }
+      
+      // Clear localStorage after successful migration
+      localStorage.removeItem(LOCAL_STORAGE_KEY);
+      console.log('Migration completed, localStorage cleared');
+      
+      return parsed;
+    } catch (error) {
+      console.error('Error migrating from localStorage:', error);
+      // Clear corrupted data
+      localStorage.removeItem(LOCAL_STORAGE_KEY);
+      return [];
+    }
+  }
+
+  /**
+   * Save a single game to IndexedDB
+   */
+  static async saveGame(game: Game): Promise<void> {
+    try {
+      if (!game || typeof game.id !== 'number') {
+        console.error('Invalid game data provided to saveGame');
+        return;
+      }
+      
+      await IndexedDBService.saveGame(game);
+      
+      // Update player statistics
+      await this.updatePlayerStats(game);
+      
+    } catch (error) {
+      console.error('Error saving game to IndexedDB:', error);
+      throw error;
+    }
+  }
+
+  /**
+   * Save multiple games to IndexedDB
+   */
+  static async saveGames(games: Game[]): Promise<void> {
+    try {
+      if (!Array.isArray(games)) {
+        console.error('Invalid games data provided to saveGames');
+        return;
+      }
+      
+      // Save each game individually
+      for (const game of games) {
+        await this.saveGame(game);
+      }
+      
+    } catch (error) {
+      console.error('Error saving games to IndexedDB:', error);
+      throw error;
+    }
+  }
+
+  /**
+   * Update player statistics when a game is saved
+   */
+  private static async updatePlayerStats(game: Game): Promise<void> {
+    try {
+      if ('players' in game) {
+        // EndlosGame
+        for (const player of game.players) {
+          await IndexedDBService.updatePlayerStats(player.name, 1, player.score);
+        }
+      } else {
+        // StandardGame
+        await IndexedDBService.updatePlayerStats(game.player1, 1, game.score1);
+        await IndexedDBService.updatePlayerStats(game.player2, 1, game.score2);
+        if (game.player3) {
+          await IndexedDBService.updatePlayerStats(game.player3, 1, game.score3 || 0);
+        }
+      }
+    } catch (error) {
+      console.warn('Failed to update player statistics:', error);
+      // Don't throw here as it's not critical
+    }
+  }
+
+  /**
+   * Create a new game
+   */
+  static createGame(gameData: NewGameData): Game {
+    // Validate input data
+    if (!gameData.player1?.trim() || !gameData.player2?.trim()) {
+      throw new Error('Player names are required');
+    }
+    
+    if (!gameData.gameType) {
+      throw new Error('Game type is required');
+    }
+    
+    // Handle "endlos" (Infinity) case - raceTo is stored as string but can be "Infinity"
+    let raceTo: number;
+    if (gameData.raceTo === 'Infinity' || gameData.raceTo === 'endlos' || String(gameData.raceTo).toLowerCase() === 'infinity') {
+      raceTo = Infinity;
+    } else {
+      raceTo = parseInt(gameData.raceTo, 10);
+      if (isNaN(raceTo) || raceTo <= 0) {
+        throw new Error('Invalid race to value');
+      }
+    }
+
+    const baseGame = {
+      id: Date.now(),
+      gameType: gameData.gameType as GameType,
+      raceTo,
+      status: 'active' as const,
+      createdAt: new Date().toISOString(),
+      updatedAt: new Date().toISOString(),
+      log: [],
+      undoStack: [],
+    };
+
+    const standardGame: StandardGame = {
+      ...baseGame,
+      player1: gameData.player1,
+      player2: gameData.player2,
+      score1: 0,
+      score2: 0,
+      breakRule: (gameData.breakRule as BreakRule) || 'winnerbreak',
+      breakOrder: (() => {
+        // Determine break order from inputs, fallback defaults
+        const players: number[] = [1, 2];
+        if (gameData.player3?.trim()) players.push(3);
+        const first = (typeof gameData.breakFirst === 'number' ? gameData.breakFirst : 1) as number;
+        const second = (typeof gameData.breakSecond === 'number' ? gameData.breakSecond : (players.includes(2) && first !== 2 ? 2 : (players.includes(3) ? 3 : 2))) as number;
+        const order = [first];
+        if (players.length === 2) {
+          order.push(first === 1 ? 2 : 1);
+        } else {
+          // 3 players: add chosen second, then the remaining third
+          order.push(second);
+          const third = [1,2,3].find(p => p !== first && p !== second)!;
+          order.push(third);
+        }
+        return order;
+      })(),
+      currentBreakerIdx: 0,
+    };
+
+    if (gameData.player3) {
+      standardGame.player3 = gameData.player3;
+      standardGame.score3 = 0;
+    }
+
+    return standardGame;
+  }
+
+  /**
+   * Update a game's score (for standard games)
+   */
+  static updateGameScore(game: StandardGame, player: number, change: number): StandardGame {
+    const updated = { ...game };
+    
+    if (player === 1) updated.score1 = Math.max(0, updated.score1 + change);
+    if (player === 2) updated.score2 = Math.max(0, updated.score2 + change);
+    if (player === 3 && updated.score3 !== undefined) {
+      updated.score3 = Math.max(0, updated.score3 + change);
+    }
+    
+    // Breaker logic
+    if (change > 0) {
+      if ((updated.breakRule || 'winnerbreak') === 'winnerbreak') {
+        // Winner keeps break: set breaker to this player
+        const order = updated.breakOrder || [1,2].concat(updated.score3 !== undefined ? [3] : []);
+        updated.breakOrder = order;
+        const idx = order.findIndex(p => p === player);
+        updated.currentBreakerIdx = idx >= 0 ? idx : 0;
+      } else {
+        // Wechselbreak: rotate to next
+        const order = updated.breakOrder || [1,2].concat(updated.score3 !== undefined ? [3] : []);
+        updated.breakOrder = order;
+        const curr = typeof updated.currentBreakerIdx === 'number' ? updated.currentBreakerIdx : 0;
+        updated.currentBreakerIdx = (curr + 1) % order.length;
+      }
+    }
+
+    updated.updatedAt = new Date().toISOString();
+    return updated;
+  }
+
+  /**
+   * Check if a game is completed based on raceTo
+   */
+  static isGameCompleted(game: Game): boolean {
+    if (game.status === 'completed') return true;
+    
+    // If raceTo is Infinity, the game never completes automatically
+    if (game.raceTo === Infinity) return false;
+    
+    if ('players' in game) {
+      // EndlosGame
+      return game.players.some(player => player.score >= game.raceTo);
+    } else {
+      // StandardGame
+      const scores = [game.score1, game.score2, game.score3].filter(score => score !== undefined);
+      return scores.some(score => score >= game.raceTo);
+    }
+  }
+
+  /**
+   * Get the winner of a completed game
+   */
+  static getGameWinner(game: Game): string | null {
+    if (!this.isGameCompleted(game)) return null;
+    
+    // If raceTo is Infinity, there's no automatic winner
+    if (game.raceTo === Infinity) return null;
+    
+    if ('players' in game) {
+      // EndlosGame
+      const winner = game.players.find(player => player.score >= game.raceTo);
+      return winner?.name || null;
+    } else {
+      // StandardGame
+      if (game.score1 >= game.raceTo) return game.player1;
+      if (game.score2 >= game.raceTo) return game.player2;
+      if (game.player3 && game.score3 && game.score3 >= game.raceTo) return game.player3;
+    }
+    
+    return null;
+  }
+
+  /**
+   * Get player name history from IndexedDB
+   */
+  static async getPlayerNameHistory(): Promise<string[]> {
+    try {
+      return await IndexedDBService.getPlayerNameHistory();
+    } catch (error) {
+      console.error('Error loading player history from IndexedDB:', error);
+      return [];
+    }
+  }
+
+  /**
+   * Get games by filter from IndexedDB
+   */
+  static async getGamesByFilter(filter: 'all' | 'active' | 'completed'): Promise<Game[]> {
+    try {
+      return await IndexedDBService.getGamesByFilter(filter);
+    } catch (error) {
+      console.error('Error loading filtered games from IndexedDB:', error);
+      return [];
+    }
+  }
+
+  /**
+   * Delete a game from IndexedDB
+   */
+  static async deleteGame(gameId: number): Promise<void> {
+    try {
+      await IndexedDBService.deleteGame(gameId);
+    } catch (error) {
+      console.error('Error deleting game from IndexedDB:', error);
+      throw error;
+    }
+  }
+
+  /**
+   * Get storage information
+   */
+  static async getStorageInfo(): Promise<{ gameCount: number; estimatedSize: number }> {
+    try {
+      return await IndexedDBService.getStorageInfo();
+    } catch (error) {
+      console.error('Error getting storage info:', error);
+      return { gameCount: 0, estimatedSize: 0 };
+    }
+  }
+}

src/lib/data/index.ts

@@ -0,0 +1,3 @@
+export * from './gameService';
+export * from './indexedDBService';
+

src/lib/data/indexedDBService.ts

@@ -0,0 +1,353 @@
+import type { Game } from '@lib/domain/types';
+
+const DB_NAME = 'BSCScoreDB';
+const DB_VERSION = 1;
+const GAMES_STORE = 'games';
+const PLAYERS_STORE = 'players';
+
+export interface GameStore {
+  id: number;
+  game: Game;
+  lastModified: number;
+  syncStatus: 'local' | 'synced' | 'pending' | 'conflict';
+  version: number;
+  createdAt: number;
+}
+
+export interface PlayerStore {
+  name: string;
+  lastUsed: number;
+  gameCount: number;
+  totalScore: number;
+}
+
+export class IndexedDBService {
+  private static db: IDBDatabase | null = null;
+  private static initPromise: Promise<IDBDatabase> | null = null;
+
+  /**
+   * Initialize IndexedDB connection
+   */
+  static async init(): Promise<IDBDatabase> {
+    if (this.db) {
+      return this.db;
+    }
+
+    if (this.initPromise) {
+      return this.initPromise;
+    }
+
+    this.initPromise = new Promise((resolve, reject) => {
+      const request = indexedDB.open(DB_NAME, DB_VERSION);
+
+      request.onerror = () => {
+        console.error('Failed to open IndexedDB:', request.error);
+        reject(request.error);
+      };
+
+      request.onsuccess = () => {
+        this.db = request.result;
+        console.log('IndexedDB initialized successfully');
+        resolve(this.db);
+      };
+
+      request.onupgradeneeded = (event) => {
+        const db = (event.target as IDBOpenDBRequest).result;
+        
+        // Create games store
+        if (!db.objectStoreNames.contains(GAMES_STORE)) {
+          const gamesStore = db.createObjectStore(GAMES_STORE, { keyPath: 'id' });
+          gamesStore.createIndex('lastModified', 'lastModified', { unique: false });
+          gamesStore.createIndex('syncStatus', 'syncStatus', { unique: false });
+          gamesStore.createIndex('gameType', 'game.gameType', { unique: false });
+          gamesStore.createIndex('status', 'game.status', { unique: false });
+          gamesStore.createIndex('createdAt', 'createdAt', { unique: false });
+        }
+
+        // Create players store
+        if (!db.objectStoreNames.contains(PLAYERS_STORE)) {
+          const playersStore = db.createObjectStore(PLAYERS_STORE, { keyPath: 'name' });
+          playersStore.createIndex('lastUsed', 'lastUsed', { unique: false });
+          playersStore.createIndex('gameCount', 'gameCount', { unique: false });
+        }
+      };
+    });
+
+    return this.initPromise;
+  }
+
+  /**
+   * Get database instance
+   */
+  private static async getDB(): Promise<IDBDatabase> {
+    if (!this.db) {
+      await this.init();
+    }
+    return this.db!;
+  }
+
+  /**
+   * Execute a transaction with the database
+   */
+  private static async executeTransaction<T>(
+    storeNames: string | string[],
+    mode: IDBTransactionMode,
+    operation: (store: IDBObjectStore) => IDBRequest<T>
+  ): Promise<T> {
+    const db = await this.getDB();
+    const transaction = db.transaction(storeNames, mode);
+    const store = transaction.objectStore(Array.isArray(storeNames) ? storeNames[0] : storeNames);
+    
+    return new Promise((resolve, reject) => {
+      const request = operation(store);
+      
+      request.onsuccess = () => resolve(request.result);
+      request.onerror = () => reject(request.error);
+      transaction.onerror = () => reject(transaction.error);
+    });
+  }
+
+  /**
+   * Save a game to IndexedDB
+   */
+  static async saveGame(game: Game): Promise<void> {
+    const db = await this.getDB();
+    const transaction = db.transaction([GAMES_STORE], 'readwrite');
+    const store = transaction.objectStore(GAMES_STORE);
+
+    const gameStore: GameStore = {
+      id: game.id,
+      game,
+      lastModified: Date.now(),
+      syncStatus: 'local',
+      version: 1,
+      createdAt: new Date(game.createdAt).getTime(),
+    };
+
+    return new Promise((resolve, reject) => {
+      const request = store.put(gameStore);
+      
+      request.onsuccess = () => {
+        console.log(`Game ${game.id} saved to IndexedDB`);
+        resolve();
+      };
+      
+      request.onerror = () => {
+        console.error(`Failed to save game ${game.id}:`, request.error);
+        reject(request.error);
+      };
+    });
+  }
+
+  /**
+   * Load all games from IndexedDB
+   */
+  static async loadGames(): Promise<Game[]> {
+    const db = await this.getDB();
+    const transaction = db.transaction([GAMES_STORE], 'readonly');
+    const store = transaction.objectStore(GAMES_STORE);
+
+    return new Promise((resolve, reject) => {
+      const request = store.getAll();
+      
+      request.onsuccess = () => {
+        const gameStores: GameStore[] = request.result;
+        const games = gameStores
+          .sort((a, b) => b.lastModified - a.lastModified)
+          .map(store => store.game);
+        
+        console.log(`Loaded ${games.length} games from IndexedDB`);
+        resolve(games);
+      };
+      
+      request.onerror = () => {
+        console.error('Failed to load games from IndexedDB:', request.error);
+        reject(request.error);
+      };
+    });
+  }
+
+  /**
+   * Load a specific game by ID
+   */
+  static async loadGame(gameId: number): Promise<Game | null> {
+    const db = await this.getDB();
+    const transaction = db.transaction([GAMES_STORE], 'readonly');
+    const store = transaction.objectStore(GAMES_STORE);
+
+    return new Promise((resolve, reject) => {
+      const request = store.get(gameId);
+      
+      request.onsuccess = () => {
+        const gameStore: GameStore | undefined = request.result;
+        resolve(gameStore ? gameStore.game : null);
+      };
+      
+      request.onerror = () => {
+        console.error(`Failed to load game ${gameId}:`, request.error);
+        reject(request.error);
+      };
+    });
+  }
+
+  /**
+   * Delete a game from IndexedDB
+   */
+  static async deleteGame(gameId: number): Promise<void> {
+    const db = await this.getDB();
+    const transaction = db.transaction([GAMES_STORE], 'readwrite');
+    const store = transaction.objectStore(GAMES_STORE);
+
+    return new Promise((resolve, reject) => {
+      const request = store.delete(gameId);
+      
+      request.onsuccess = () => {
+        console.log(`Game ${gameId} deleted from IndexedDB`);
+        resolve();
+      };
+      
+      request.onerror = () => {
+        console.error(`Failed to delete game ${gameId}:`, request.error);
+        reject(request.error);
+      };
+    });
+  }
+
+  /**
+   * Get games by filter
+   */
+  static async getGamesByFilter(filter: 'all' | 'active' | 'completed'): Promise<Game[]> {
+    const db = await this.getDB();
+    const transaction = db.transaction([GAMES_STORE], 'readonly');
+    const store = transaction.objectStore(GAMES_STORE);
+    const index = store.index('status');
+
+    return new Promise((resolve, reject) => {
+      let request: IDBRequest<GameStore[]>;
+      
+      if (filter === 'all') {
+        request = store.getAll();
+      } else {
+        request = index.getAll(filter);
+      }
+      
+      request.onsuccess = () => {
+        const gameStores: GameStore[] = request.result;
+        const games = gameStores
+          .sort((a, b) => b.lastModified - a.lastModified)
+          .map(store => store.game);
+        
+        resolve(games);
+      };
+      
+      request.onerror = () => {
+        console.error(`Failed to load ${filter} games:`, request.error);
+        reject(request.error);
+      };
+    });
+  }
+
+  /**
+   * Update player statistics
+   */
+  static async updatePlayerStats(playerName: string, gameCount: number = 1, totalScore: number = 0): Promise<void> {
+    const db = await this.getDB();
+    const transaction = db.transaction([PLAYERS_STORE], 'readwrite');
+    const store = transaction.objectStore(PLAYERS_STORE);
+
+    return new Promise((resolve, reject) => {
+      // First, try to get existing player data
+      const getRequest = store.get(playerName);
+      
+      getRequest.onsuccess = () => {
+        const existingPlayer: PlayerStore | undefined = getRequest.result;
+        
+        const playerStore: PlayerStore = {
+          name: playerName,
+          lastUsed: Date.now(),
+          gameCount: existingPlayer ? existingPlayer.gameCount + gameCount : gameCount,
+          totalScore: existingPlayer ? existingPlayer.totalScore + totalScore : totalScore,
+        };
+
+        const putRequest = store.put(playerStore);
+        
+        putRequest.onsuccess = () => resolve();
+        putRequest.onerror = () => reject(putRequest.error);
+      };
+      
+      getRequest.onerror = () => reject(getRequest.error);
+    });
+  }
+
+  /**
+   * Get player name history sorted by last used
+   */
+  static async getPlayerNameHistory(): Promise<string[]> {
+    const db = await this.getDB();
+    const transaction = db.transaction([PLAYERS_STORE], 'readonly');
+    const store = transaction.objectStore(PLAYERS_STORE);
+    const index = store.index('lastUsed');
+
+    return new Promise((resolve, reject) => {
+      const request = index.getAll();
+      
+      request.onsuccess = () => {
+        const players: PlayerStore[] = request.result;
+        const sortedNames = players
+          .sort((a, b) => b.lastUsed - a.lastUsed)
+          .map(player => player.name);
+        
+        resolve(sortedNames);
+      };
+      
+      request.onerror = () => {
+        console.error('Failed to load player history:', request.error);
+        reject(request.error);
+      };
+    });
+  }
+
+  /**
+   * Clear all data (for testing or reset)
+   */
+  static async clearAllData(): Promise<void> {
+    const db = await this.getDB();
+    const transaction = db.transaction([GAMES_STORE, PLAYERS_STORE], 'readwrite');
+    
+    return new Promise((resolve, reject) => {
+      const gamesStore = transaction.objectStore(GAMES_STORE);
+      const playersStore = transaction.objectStore(PLAYERS_STORE);
+      
+      const clearGames = gamesStore.clear();
+      const clearPlayers = playersStore.clear();
+      
+      let completed = 0;
+      const onComplete = () => {
+        completed++;
+        if (completed === 2) {
+          console.log('All IndexedDB data cleared');
+          resolve();
+        }
+      };
+      
+      clearGames.onsuccess = onComplete;
+      clearPlayers.onsuccess = onComplete;
+      
+      clearGames.onerror = () => reject(clearGames.error);
+      clearPlayers.onerror = () => reject(clearPlayers.error);
+    });
+  }
+
+  /**
+   * Get storage usage information
+   */
+  static async getStorageInfo(): Promise<{ gameCount: number; estimatedSize: number }> {
+    const games = await this.loadGames();
+    const estimatedSize = JSON.stringify(games).length;
+    
+    return {
+      gameCount: games.length,
+      estimatedSize,
+    };
+  }
+}

src/lib/data/testing/testIndexedDB.ts

@@ -0,0 +1,140 @@
+import { IndexedDBService } from '@lib/data/indexedDBService';
+import { GameService } from '@lib/data/gameService';
+import type { NewGameData } from '@lib/domain/types';
+
+/**
+ * Test utility for IndexedDB functionality
+ * Run this in the browser console to test the implementation
+ */
+export async function testIndexedDB() {
+  console.log('🧪 Starting IndexedDB tests...');
+  
+  try {
+    // Test 1: Initialize IndexedDB
+    console.log('Test 1: Initializing IndexedDB...');
+    await IndexedDBService.init();
+    console.log('✅ IndexedDB initialized successfully');
+    
+    // Test 2: Create a test game
+    console.log('Test 2: Creating test game...');
+    const testGameData: NewGameData = {
+      player1: 'Test Player 1',
+      player2: 'Test Player 2',
+      player3: 'Test Player 3',
+      gameType: '8-Ball',
+      raceTo: '5'
+    };
+    
+    const testGame = GameService.createGame(testGameData);
+    console.log('✅ Test game created:', testGame);
+    
+    // Test 3: Save game to IndexedDB
+    console.log('Test 3: Saving game to IndexedDB...');
+    await IndexedDBService.saveGame(testGame);
+    console.log('✅ Game saved to IndexedDB');
+    
+    // Test 4: Load games from IndexedDB
+    console.log('Test 4: Loading games from IndexedDB...');
+    const loadedGames = await IndexedDBService.loadGames();
+    console.log('✅ Games loaded:', loadedGames.length, 'games found');
+    
+    // Test 5: Test filtering
+    console.log('Test 5: Testing game filtering...');
+    const activeGames = await IndexedDBService.getGamesByFilter('active');
+    const completedGames = await IndexedDBService.getGamesByFilter('completed');
+    console.log('✅ Filtering works - Active:', activeGames.length, 'Completed:', completedGames.length);
+    
+    // Test 6: Test player statistics
+    console.log('Test 6: Testing player statistics...');
+    await IndexedDBService.updatePlayerStats('Test Player 1', 1, 3);
+    await IndexedDBService.updatePlayerStats('Test Player 2', 1, 2);
+    const playerHistory = await IndexedDBService.getPlayerNameHistory();
+    console.log('✅ Player statistics updated:', playerHistory);
+    
+    // Test 7: Test storage info
+    console.log('Test 7: Testing storage information...');
+    const storageInfo = await IndexedDBService.getStorageInfo();
+    console.log('✅ Storage info:', storageInfo);
+    
+    // Test 8: Test game deletion
+    console.log('Test 8: Testing game deletion...');
+    await IndexedDBService.deleteGame(testGame.id);
+    const gamesAfterDelete = await IndexedDBService.loadGames();
+    console.log('✅ Game deleted - Remaining games:', gamesAfterDelete.length);
+    
+    console.log('🎉 All IndexedDB tests passed!');
+    
+    return {
+      success: true,
+      message: 'All tests passed successfully',
+      storageInfo,
+      playerHistory
+    };
+    
+  } catch (error) {
+    console.error('❌ IndexedDB test failed:', error);
+    return {
+      success: false,
+      error: error.message,
+      message: 'Tests failed - check console for details'
+    };
+  }
+}
+
+/**
+ * Test localStorage migration
+ */
+export async function testLocalStorageMigration() {
+  console.log('🔄 Testing localStorage migration...');
+  
+  try {
+    // Create some test data in localStorage
+    const testGames = [
+      {
+        id: Date.now(),
+        gameType: '8-Ball',
+        raceTo: 5,
+        status: 'active',
+        player1: 'Migration Test 1',
+        player2: 'Migration Test 2',
+        score1: 0,
+        score2: 0,
+        createdAt: new Date().toISOString(),
+        updatedAt: new Date().toISOString(),
+        log: [],
+        undoStack: []
+      }
+    ];
+    
+    localStorage.setItem('bscscore_games', JSON.stringify(testGames));
+    console.log('✅ Test data created in localStorage');
+    
+    // Test migration
+    const migratedGames = await GameService.loadGames();
+    console.log('✅ Migration completed - Games loaded:', migratedGames.length);
+    
+    // Verify localStorage is cleared
+    const remainingData = localStorage.getItem('bscscore_games');
+    console.log('✅ localStorage cleared after migration:', remainingData === null);
+    
+    return {
+      success: true,
+      message: 'Migration test passed',
+      migratedGames: migratedGames.length
+    };
+    
+  } catch (error) {
+    console.error('❌ Migration test failed:', error);
+    return {
+      success: false,
+      error: error.message,
+      message: 'Migration test failed'
+    };
+  }
+}
+
+// Make functions available globally for console testing
+if (typeof window !== 'undefined') {
+  (window as any).testIndexedDB = testIndexedDB;
+  (window as any).testLocalStorageMigration = testLocalStorageMigration;
+}

src/lib/docs/architecture.md

@@ -0,0 +1,64 @@
+# BSC Score Modular Architecture
+
+This document captures the reusable module layout introduced in the refactor.  
+Everything under `src/lib` is now consumable from other React/Preact hosts without depending on the Astro shell that ships in this repository.
+
+## Module Overview
+
+- `@lib/domain` – **Pure domain logic** (types, constants, validation helpers, formatters).  
+  No framework dependencies, no browser APIs. Safe to re-use from Node or tests.
+- `@lib/data` – **Persistence services** (IndexedDB access, repository abstractions, test harness).  
+  Wraps browser APIs and isolates side-effects away from UI/state.
+- `@lib/state` – **Composable hooks** that orchestrate domain + data layers.  
+  Exported hooks expose serialisable state and imperative actions.
+- `@lib/ui` – **Stateless presentational primitives** (buttons, cards, layout shell, generic modals).  
+  Ship with co-located CSS modules and type-safe props.
+- `@lib/features/*` – **Feature bundles** that compose UI + state to deliver end-user flows.  
+  Current bundles:
+  - `game-list` (list + filter experience)
+  - `game-detail` (scoreboard with break tracking)
+  - `game-lifecycle` (completion modal + rematch workflow)
+  - `new-game` (wizard steps and player pickers)
+
+## Import Surfaces
+
+All entry points are re-exported via `@lib/index.ts`, so consumers can either:
+
+```ts
+import { GameService, useGameState, GameList } from '@lib';
+```
+
+or pick a scoped module:
+
+```ts
+import { GameService } from '@lib/data';
+import { GameList } from '@lib/features/game-list';
+```
+
+## Cross-Cutting Rules
+
+- **Domain first**: New feature logic should be expressed with domain types and helpers before touching hooks/UI.
+- **One-way dependencies**:
+  ```
+  domain → data → state → features → app shell
+  ```
+  Lower layers must not import from higher ones.
+- **CSS modules stay co-located** with the component they style. Consumers receive the compiled class names via the exported component props.
+- **Documentation lives next to code**: every module has a `README.md` describing intent, public API, and integration notes.
+
+## Migration Notes
+
+- Legacy `src/components` now only hosts the Astro shell (`App.tsx`, `BscScoreApp.astro`, etc.).  
+  All reusable React pieces were migrated under `src/lib`.
+- Path aliases:
+  - `@/*` → `src/*`
+  - `@lib/*` → `src/lib/*`
+  Update your editor/tsconfig if you embed these modules elsewhere.
+- Tests should import from `@lib` to avoid depending on Astro-specific wiring.
+
+## Next Steps
+
+- Promote more feature-level Storybook / Playwright fixtures into `src/lib/docs`.
+- When adding new modules, extend `src/lib/index.ts` and document usage in the corresponding folder.
+
+

src/lib/domain/README.md

@@ -0,0 +1,27 @@
+# Domain Layer (`@lib/domain`)
+
+Pure domain model primitives for BSC Score. Everything here is framework-agnostic and free of side effects.
+
+## Exports
+
+- `types.ts` – canonical TypeScript shapes (`Game`, `StandardGame`, `EndlosGame`, `NewGameData`, etc.).
+- `constants.ts` – configuration, validation copy, UI sizing tokens.
+- `validation.ts` – safe helpers for validating/sanitising player & game inputs.
+- `gameUtils.ts` – derived state utilities (duration, winner detection, type guards).
+
+## Usage Guidelines
+
+- Treat the domain layer as the single source of truth for typings across the app (UI, services, tests).
+- Keep functions pure and deterministic; no DOM, storage, or logging side effects beyond debug `console` statements.
+- When extending the data model, update the corresponding domain `README.md` section and propagate new types through `@lib/domain/index.ts`.
+
+## Example
+
+```ts
+import { Game, validateGameData, GAME_TYPES } from '@lib/domain';
+
+const result = validateGameData(dataFromForm); // -> { isValid, errors }
+const isEndlos = GAME_TYPES.some((type) => type.value === '8-Ball');
+```
+
+

src/lib/domain/constants.ts

@@ -0,0 +1,133 @@
+import type { GameType } from './types';
+
+export const GAME_TYPES: Array<{ value: GameType; label: string; defaultRaceTo: number }> = [
+  { value: '8-Ball', label: '8-Ball', defaultRaceTo: 5 },
+  { value: '9-Ball', label: '9-Ball', defaultRaceTo: 9 },
+  { value: '10-Ball', label: '10-Ball', defaultRaceTo: 10 },
+];
+
+export const RACE_TO_OPTIONS = [
+  { value: '5', label: 'Race to 5' },
+  { value: '7', label: 'Race to 7' },
+  { value: '9', label: 'Race to 9' },
+  { value: '11', label: 'Race to 11' },
+  { value: '15', label: 'Race to 15' },
+  { value: '25', label: 'Race to 25' },
+  { value: '50', label: 'Race to 50' },
+  { value: '100', label: 'Race to 100' },
+  { value: '150', label: 'Race to 150' },
+];
+
+export const LOCAL_STORAGE_KEYS = {
+  GAMES: 'bscscore_games',
+  SETTINGS: 'bscscore_settings',
+  PLAYER_HISTORY: 'bscscore_player_history',
+} as const;
+
+export const APP_CONFIG = {
+  MAX_PLAYER_NAME_LENGTH: 20,
+  MAX_GAME_HISTORY: 100,
+  MAX_PLAYER_HISTORY: 50,
+  UNDO_STACK_SIZE: 10,
+} as const;
+
+export const VALIDATION_MESSAGES = {
+  PLAYER_NAME_REQUIRED: 'Spielername ist erforderlich',
+  PLAYER_NAME_TOO_LONG: `Spielername darf maximal ${APP_CONFIG.MAX_PLAYER_NAME_LENGTH} Zeichen lang sein`,
+  GAME_TYPE_REQUIRED: 'Spieltyp muss ausgewählt werden',
+  RACE_TO_REQUIRED: 'Race-to Wert ist erforderlich',
+  RACE_TO_INVALID: 'Race-to Wert muss eine positive Zahl sein',
+  DUPLICATE_PLAYER_NAMES: 'Spielernamen müssen eindeutig sein',
+} as const;
+
+export const BREAKPOINTS = {
+  MOBILE: '480px',
+  TABLET: '768px',
+  DESKTOP: '1024px',
+  LARGE_DESKTOP: '1200px',
+} as const;
+
+export const UI_CONSTANTS = {
+  // Progress indicators
+  TOTAL_WIZARD_STEPS: 5,
+  
+  // Input styling
+  INPUT_FONT_SIZE: '1.2rem',
+  LABEL_FONT_SIZE: '1.3rem',
+  INPUT_MIN_HEIGHT: 48,
+  INPUT_PADDING_RIGHT: 44,
+  
+  // Button styling
+  ARROW_BUTTON_SIZE: 80,
+  ARROW_BUTTON_FONT_SIZE: 48,
+  QUICK_PICK_PADDING: '12px 20px',
+  QUICK_PICK_FONT_SIZE: '1.1rem',
+  
+  // Spacing
+  MARGIN_BOTTOM_LARGE: 32,
+  MARGIN_BOTTOM_MEDIUM: 24,
+  MARGIN_BOTTOM_SMALL: 16,
+  MARGIN_TOP_NAV: 48,
+  
+  // Quick pick limits
+  MAX_QUICK_PICKS: 10,
+  
+  // Animation durations
+  TOAST_DURATION: 3000,
+  TOAST_ANIMATION_DELAY: 300,
+} as const;
+
+export const WIZARD_STEPS = {
+  PLAYER1: 1,
+  PLAYER2: 2,
+  PLAYER3: 3,
+  GAME_TYPE: 4,
+  RACE_TO: 5,
+} as const;
+
+export const GAME_TYPE_OPTIONS = ['8-Ball', '9-Ball', '10-Ball'] as const;
+
+export const RACE_TO_QUICK_PICKS = [1, 2, 3, 4, 5, 6, 7, 8, 9] as const;
+
+export const RACE_TO_DEFAULT = 5;
+
+export const RACE_TO_INFINITY = 'Infinity';
+
+export const ERROR_MESSAGES = {
+  PLAYER1_REQUIRED: 'Bitte Namen für Spieler 1 eingeben',
+  PLAYER2_REQUIRED: 'Bitte Namen für Spieler 2 eingeben',
+  GAME_TYPE_REQUIRED: 'Spieltyp muss ausgewählt werden',
+} as const;
+
+export const ARIA_LABELS = {
+  BACK: 'Zurück',
+  NEXT: 'Weiter',
+  SKIP: 'Überspringen',
+  CLEAR_FIELD: 'Feld leeren',
+  SHOW_MORE_PLAYERS: 'Weitere Spieler anzeigen',
+  QUICK_PICK: (name: string) => `Schnellauswahl: ${name}`,
+  PLAYER_INPUT: (step: string) => `${step} Eingabe`,
+} as const;
+
+export const FORM_CONFIG = {
+  MAX_PLAYER_NAME_LENGTH: 20,
+  CHARACTER_COUNT_WARNING_THRESHOLD: 15,
+  VALIDATION_DEBOUNCE_MS: 300,
+} as const;
+
+export const ERROR_STYLES = {
+  CONTAINER: {
+    padding: '8px 12px',
+    backgroundColor: '#ffebee',
+    border: '1px solid #f44336',
+    borderRadius: '4px',
+    color: '#d32f2f',
+    fontSize: '0.875rem',
+    display: 'flex',
+    alignItems: 'center',
+    gap: '8px',
+  },
+  ICON: {
+    fontSize: '16px',
+  },
+} as const;

src/lib/domain/gameUtils.ts

@@ -0,0 +1,108 @@
+import type { Game, StandardGame, EndlosGame } from './types';
+
+/**
+ * Game utility functions for common operations
+ */
+
+export function isEndlosGame(game: Game): game is EndlosGame {
+  return 'players' in game;
+}
+
+export function isStandardGame(game: Game): game is StandardGame {
+  return !('players' in game);
+}
+
+export function formatGameTime(dateString: string): string {
+  const date = new Date(dateString);
+  const now = new Date();
+  const diffInHours = (now.getTime() - date.getTime()) / (1000 * 60 * 60);
+
+  if (diffInHours < 1) {
+    return 'vor wenigen Minuten';
+  } else if (diffInHours < 24) {
+    return `vor ${Math.floor(diffInHours)} Stunde${Math.floor(diffInHours) !== 1 ? 'n' : ''}`;
+  } else if (diffInHours < 168) { // 7 days
+    const days = Math.floor(diffInHours / 24);
+    return `vor ${days} Tag${days !== 1 ? 'en' : ''}`;
+  } else {
+    return date.toLocaleDateString('de-DE');
+  }
+}
+
+export function getGameDuration(game: Game): string {
+  const start = new Date(game.createdAt);
+  const end = new Date(game.updatedAt);
+  const diffInMinutes = (end.getTime() - start.getTime()) / (1000 * 60);
+
+  if (diffInMinutes < 60) {
+    return `${Math.floor(diffInMinutes)} Min`;
+  } else {
+    const hours = Math.floor(diffInMinutes / 60);
+    const minutes = Math.floor(diffInMinutes % 60);
+    return `${hours}h ${minutes}m`;
+  }
+}
+
+export function calculateGameProgress(game: Game): number {
+  // If raceTo is Infinity, progress is always 0 (endless game)
+  if (game.raceTo === Infinity) return 0;
+  
+  if (isEndlosGame(game)) {
+    const maxScore = Math.max(...game.players.map(p => p.score));
+    return Math.min((maxScore / game.raceTo) * 100, 100);
+  } else {
+    const scores = [game.score1, game.score2, game.score3 || 0];
+    const maxScore = Math.max(...scores);
+    return Math.min((maxScore / game.raceTo) * 100, 100);
+  }
+}
+
+export function getGameWinner(game: Game): string | null {
+  if (game.status !== 'completed') return null;
+
+  if ('winner' in game && game.winner) {
+    return game.winner;
+  }
+
+  // If raceTo is Infinity, there's no automatic winner
+  if (game.raceTo === Infinity) return null;
+
+  if (isEndlosGame(game)) {
+    const winner = game.players.find(player => player.score >= game.raceTo);
+    return winner?.name || null;
+  } else {
+    if (game.score1 >= game.raceTo) return game.player1;
+    if (game.score2 >= game.raceTo) return game.player2;
+    if (game.player3 && game.score3 && game.score3 >= game.raceTo) return game.player3;
+  }
+
+  return null;
+}
+
+export function getGamePlayers(game: Game): Array<{ name: string; score: number }> {
+  if (isEndlosGame(game)) {
+    return game.players.map(player => ({
+      name: player.name,
+      score: player.score,
+    }));
+  } else {
+    const players = [
+      { name: game.player1, score: game.score1 },
+      { name: game.player2, score: game.score2 },
+    ];
+    if (game.player3) {
+      players.push({ name: game.player3, score: game.score3 || 0 });
+    }
+    return players;
+  }
+}
+
+export function validateGameData(data: any): boolean {
+  return !!(
+    data.player1?.trim() &&
+    data.player2?.trim() &&
+    data.gameType &&
+    data.raceTo &&
+    parseInt(data.raceTo) > 0
+  );
+}

src/lib/domain/index.ts

@@ -0,0 +1,5 @@
+export * from './types';
+export * from './constants';
+export * from './validation';
+export * from './gameUtils';
+

src/lib/domain/types.ts

@@ -0,0 +1,74 @@
+export type GameStatus = 'active' | 'completed';
+
+export type GameType = '8-Ball' | '9-Ball' | '10-Ball';
+
+export type SyncStatus = 'local' | 'synced' | 'pending' | 'conflict';
+
+export interface Player {
+  name: string;
+  score: number;
+  consecutiveFouls?: number;
+}
+
+export interface GameAction {
+  type: 'score_change' | 'game_complete' | 'game_forfeit' | 'undo';
+  player?: number;
+  change?: number;
+  timestamp: string;
+  description: string;
+}
+
+export interface BaseGame {
+  id: number;
+  gameType: GameType;
+  raceTo: number;
+  status: GameStatus;
+  createdAt: string;
+  updatedAt: string;
+  log: GameAction[];
+  undoStack: BaseGame[];
+  // Sync fields for future online functionality
+  syncStatus?: SyncStatus;
+  version?: number;
+  lastModified?: number;
+}
+
+export type BreakRule = 'winnerbreak' | 'wechselbreak';
+
+export interface StandardGame extends BaseGame {
+  player1: string;
+  player2: string;
+  player3?: string;
+  score1: number;
+  score2: number;
+  score3?: number;
+  // Break management
+  breakRule?: BreakRule; // default winnerbreak for backfill
+  breakOrder?: number[]; // 1-based player indices, e.g. [1,2] or [1,2,3]
+  currentBreakerIdx?: number; // index into breakOrder
+}
+
+export interface EndlosGame extends BaseGame {
+  players: Player[];
+  currentPlayer: number | null;
+  ballsOnTable: number;
+  winner?: string;
+  forfeitedBy?: string;
+}
+
+export type Game = StandardGame | EndlosGame;
+
+export interface NewGameData {
+  player1: string;
+  player2: string;
+  player3: string;
+  gameType: GameType | '';
+  raceTo: string;
+  breakRule?: BreakRule | '';
+  breakFirst?: number | '';
+  breakSecond?: number | '';
+}
+
+export type NewGameStep = 'player1' | 'player2' | 'player3' | 'gameType' | 'breakRule' | 'breakOrder' | 'raceTo' | null;
+
+export type GameFilter = 'all' | 'active' | 'completed';

src/lib/domain/validation.ts

@@ -0,0 +1,99 @@
+import { APP_CONFIG, VALIDATION_MESSAGES } from './constants';
+import type { NewGameData } from './types';
+
+export interface ValidationResult {
+  isValid: boolean;
+  errors: string[];
+}
+
+export function validatePlayerName(name: string): ValidationResult {
+  const errors: string[] = [];
+  const trimmedName = name.trim();
+
+  if (!trimmedName) {
+    errors.push(VALIDATION_MESSAGES.PLAYER_NAME_REQUIRED);
+  }
+
+  if (trimmedName.length > APP_CONFIG.MAX_PLAYER_NAME_LENGTH) {
+    errors.push(VALIDATION_MESSAGES.PLAYER_NAME_TOO_LONG);
+  }
+
+  return {
+    isValid: errors.length === 0,
+    errors,
+  };
+}
+
+export function validateGameData(data: NewGameData): ValidationResult {
+  const errors: string[] = [];
+
+  try {
+    // Validate player names
+    const player1Validation = validatePlayerName(data.player1);
+    const player2Validation = validatePlayerName(data.player2);
+    
+    errors.push(...player1Validation.errors);
+    errors.push(...player2Validation.errors);
+
+    // Check for duplicate player names
+    const playerNames = [data.player1.trim(), data.player2.trim()];
+    if (data.player3?.trim()) {
+      const player3Validation = validatePlayerName(data.player3);
+      errors.push(...player3Validation.errors);
+      playerNames.push(data.player3.trim());
+    }
+
+    const uniqueNames = new Set(playerNames.filter(name => name.length > 0));
+    if (uniqueNames.size !== playerNames.filter(name => name.length > 0).length) {
+      errors.push(VALIDATION_MESSAGES.DUPLICATE_PLAYER_NAMES);
+    }
+
+    // Validate game type
+    if (!data.gameType?.trim()) {
+      errors.push(VALIDATION_MESSAGES.GAME_TYPE_REQUIRED);
+    }
+
+    // Validate race to
+    if (!data.raceTo?.trim()) {
+      errors.push(VALIDATION_MESSAGES.RACE_TO_REQUIRED);
+    } else {
+      const raceToNumber = parseInt(data.raceTo, 10);
+      if (isNaN(raceToNumber) || raceToNumber <= 0) {
+        errors.push(VALIDATION_MESSAGES.RACE_TO_INVALID);
+      }
+    }
+  } catch (error) {
+    console.error('Validation error:', error);
+    errors.push('Ein unerwarteter Validierungsfehler ist aufgetreten');
+  }
+
+  return {
+    isValid: errors.length === 0,
+    errors,
+  };
+}
+
+export function sanitizePlayerName(name: string): string {
+  return name
+    .trim()
+    .slice(0, APP_CONFIG.MAX_PLAYER_NAME_LENGTH)
+    .replace(/[^\w\s-]/g, ''); // Remove special characters except spaces and hyphens
+}
+
+export function validateRaceTo(value: string): ValidationResult {
+  const errors: string[] = [];
+  
+  if (!value?.trim()) {
+    errors.push(VALIDATION_MESSAGES.RACE_TO_REQUIRED);
+  } else {
+    const numValue = parseInt(value, 10);
+    if (isNaN(numValue) || numValue <= 0) {
+      errors.push(VALIDATION_MESSAGES.RACE_TO_INVALID);
+    }
+  }
+
+  return {
+    isValid: errors.length === 0,
+    errors,
+  };
+}

src/lib/features/README.md

@@ -0,0 +1,30 @@
+# Feature Bundles (`@lib/features`)
+
+Feature directories compose domain, data, state, and UI primitives into end-user flows. Each folder exports React/Preact components that can be dropped into any host application.
+
+## Available Features
+
+- `game-list`
+  - `GameList` component that renders filters + game cards.
+- `game-detail`
+  - `GameDetail` scoreboard with break tracking, undo triggers, and finish controls.
+- `game-lifecycle`
+  - `GameCompletionModal` summarising winners + rematch CTA.
+- `new-game`
+  - Wizard step components (`Player1Step`, `BreakOrderStep`, etc.) and modal pickers.
+
+## Usage Example
+
+```tsx
+import { GameList, GameCompletionModal } from '@lib/features/game-list';
+// or, via umbrella export:
+import { GameDetail, GameCompletionModal } from '@lib';
+```
+
+## Conventions
+
+- Feature components accept plain props (typically typed with `@lib/domain` types) and delegate callbacks to the consumer.
+- State management lives in `@lib/state`. Features should remain stateless except for local UI state (e.g. input fields).
+- Keep CSS modules inside the feature folder to avoid cross-feature leakage.
+
+

src/lib/features/game-detail/GameDetail.module.css

@@ -0,0 +1,473 @@
+/* GameDetail-specific styles only. Shared utility classes are now in global CSS. */
+.screen {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    min-height: 100vh;
+    display: none;
+    opacity: 0;
+    transform: translateX(100%);
+    transition: transform 0.3s ease, opacity 0.3s ease;
+}
+.screen.active {
+    display: block;
+    opacity: 1;
+    transform: translateX(0);
+    position: relative;
+}
+.screen-content {
+    display: flex;
+    flex-direction: column;
+    height: 100%;
+    padding: 20px;
+    overflow-y: auto;
+    overflow-x: hidden;
+    -webkit-overflow-scrolling: touch;
+    min-height: 0;
+}
+.game-detail {
+    display: flex;
+    flex-direction: column;
+    height: 100%;
+    overflow-y: auto;
+    overflow-x: hidden;
+    padding: var(--space-md);
+    min-height: 0;
+}
+
+.game-title {
+    font-size: 24px;
+    color: #ccc;
+    flex-shrink: 0;
+}
+.game-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 20px;
+    width: 100%;
+    flex-shrink: 0;
+}
+.scores-container {
+    display: flex;
+    justify-content: space-between;
+    gap: 32px;
+    min-height: 0;
+    flex-shrink: 0;
+}
+.player-score {
+    flex: 1;
+    text-align: center;
+    padding: 30px 20px;
+    border-radius: 20px;
+    display: flex;
+    flex-direction: column;
+    min-height: 0;
+    margin: 0 8px;
+    position: relative;
+    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
+    transition: all 0.3s ease;
+}
+
+.player-score:hover {
+    transform: translateY(-4px);
+    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
+}
+.player-score:first-child {
+    background-color: #43a047;
+}
+.player-score:nth-child(2) {
+    background-color: #1565c0;
+}
+.player-score:nth-child(3) {
+    background-color: #333;
+}
+.player-name {
+    font-size: 28px;
+    font-weight: 700;
+    margin-bottom: 15px;
+    color: #fff;
+    text-shadow: 0 2px 8px rgba(0,0,0,0.4);
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    text-transform: uppercase;
+    letter-spacing: 1px;
+}
+
+.progress-bar {
+    width: 100%;
+    height: 8px;
+    background: rgba(255,255,255,0.2);
+    border-radius: 4px;
+    margin: 10px 0;
+    overflow: hidden;
+}
+
+.progress-fill {
+    height: 100%;
+    background: linear-gradient(90deg, #fff 0%, #f0f0f0 100%);
+    border-radius: 4px;
+    transition: width 0.5s ease;
+    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
+}
+
+.game-status {
+    position: absolute;
+    top: 10px;
+    right: 10px;
+    padding: 4px 8px;
+    border-radius: 12px;
+    font-size: 12px;
+    font-weight: 600;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+}
+
+.game-status.active {
+    background: #4caf50;
+    color: #fff;
+}
+
+.game-status.completed {
+    background: #ff9800;
+    color: #222;
+}
+.score {
+    font-size: 40vh;
+    font-weight: 900;
+    margin: 20px 0 30px 0;
+    line-height: 1;
+    color: #fff;
+    text-shadow: 0 4px 16px rgba(0,0,0,0.6);
+    text-align: center;
+    display: block;
+    min-height: 120px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+.score-buttons {
+    display: flex;
+    justify-content: center;
+    gap: 10px;
+    margin-top: auto;
+}
+.score-button {
+    background: linear-gradient(135deg, #ff9800 0%, #ffa726 100%);
+    color: #222;
+    border: none;
+    border-radius: 50%;
+    padding: 0;
+    font-size: 2.5rem;
+    font-weight: 900;
+    cursor: pointer;
+    transition: all 0.3s ease;
+    width: 80px;
+    height: 80px;
+    margin: 0 8px;
+    box-shadow: 0 4px 16px rgba(255, 152, 0, 0.3);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    touch-action: manipulation;
+}
+
+.score-button:hover:not(:disabled) {
+    transform: translateY(-2px);
+    box-shadow: 0 6px 20px rgba(255, 152, 0, 0.4);
+    background: linear-gradient(135deg, #ffa726 0%, #ffb74d 100%);
+}
+
+.score-button:active:not(:disabled) {
+    transform: translateY(0);
+    box-shadow: 0 2px 8px rgba(255, 152, 0, 0.3);
+}
+
+.score-button:disabled {
+    background: #666;
+    color: #999;
+    cursor: not-allowed;
+    transform: none;
+    box-shadow: none;
+}
+.game-controls {
+    display: flex;
+    gap: 10px;
+    margin-top: 20px;
+    width: 100%;
+}
+.control-button {
+    flex: 1;
+    padding: 30px;
+    background: #333;
+    color: white;
+    border: none;
+    border-radius: 0;
+    font-size: 24px;
+    cursor: pointer;
+    touch-action: manipulation;
+}
+.control-button.delete {
+    background: #f44336;
+}
+.game-detail-controls {
+    display: flex;
+    flex-direction: row;
+    gap: 24px;
+    margin: 40px 0 0 0;
+    padding-bottom: var(--space-xl);
+    width: 100%;
+    justify-content: center;
+    flex-shrink: 0;
+}
+.franky .player-name {
+    font-weight: bold;
+    color: #ff8c00; /* Example color */
+}
+.active-player {
+    position: relative;
+    border: 4px solid #ff9800;
+    box-shadow: 0 0 32px 8px #ff9800, 0 0 0 8px rgba(255,152,0,0.15);
+    background: linear-gradient(90deg, #ff9800 0 8px, rgba(255,152,0,0.15) 8px 100%);
+    color: #222 !important;
+    animation: activePulse 1.2s infinite alternate;
+    z-index: 2;
+}
+.active-player .player-name, .active-player .score {
+    color: #222 !important;
+    text-shadow: 0 2px 8px rgba(255,255,255,0.25);
+}
+.active-player::before {
+    content: '';
+    position: absolute;
+    left: 0; top: 0; bottom: 0;
+    width: 8px;
+    background: #ff9800;
+    border-radius: 8px 0 0 8px;
+}
+@keyframes activePulse {
+    0% { box-shadow: 0 0 32px 8px #ff9800, 0 0 0 8px rgba(255,152,0,0.15); }
+    100% { box-shadow: 0 0 48px 16px #ff9800, 0 0 0 16px rgba(255,152,0,0.22); }
+}
+.turn-indicator {
+    margin: 20px 0;
+    font-size: 1.2rem;
+    text-align: center;
+}
+.potted-balls-container {
+    margin-top: 2rem;
+    padding: 1rem;
+    background: #2a2a2a;
+    border-radius: 8px;
+}
+.potted-balls-header {
+    text-align: center;
+    font-size: 1.1rem;
+    margin-bottom: 1rem;
+    font-weight: 600;
+}
+.potted-balls-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
+    gap: 10px;
+}
+.potted-ball-btn {
+    padding: 1rem;
+    font-size: 1.2rem;
+    font-weight: bold;
+    border-radius: 8px;
+    border: 1px solid #444;
+    background-color: #333;
+    color: #fff;
+    cursor: pointer;
+    transition: background-color 0.2s, transform 0.2s;
+}
+.potted-ball-btn:hover:not(:disabled) {
+    background-color: #45a049;
+    transform: translateY(-2px);
+}
+.potted-ball-btn:disabled {
+    background-color: #222;
+    color: #555;
+    cursor: not-allowed;
+}
+.rerack-controls {
+    display: flex;
+    justify-content: center;
+    gap: 1rem;
+    margin-top: 1.5rem;
+}
+.rerack-btn {
+    padding: 0.8rem 1.5rem;
+    font-size: 1rem;
+    font-weight: bold;
+    border-radius: 8px;
+    border: 1px solid #444;
+    background-color: #3a539b;
+    color: #fff;
+    cursor: pointer;
+    transition: background-color 0.2s;
+}
+.rerack-btn:hover {
+    background-color: #4a6fbf;
+}
+
+.foul-controls {
+  display: flex;
+  justify-content: center;
+  gap: 1rem;
+  margin-top: 1.5rem;
+}
+
+.foul-btn {
+  flex-grow: 1;
+  background-color: #ffc107; /* Amber */
+  color: #212529;
+  border: none;
+  padding: 0.75rem;
+  border-radius: var(--border-radius);
+  cursor: pointer;
+  font-size: 1rem;
+  transition: background-color 0.2s;
+}
+
+.foul-btn:hover {
+  background-color: #ffca2c;
+}
+
+.foul-btn:disabled {
+  background-color: #e0e0e0;
+  color: #9e9e9e;
+  cursor: not-allowed;
+}
+
+.foul-indicator {
+  font-size: 1rem;
+  font-weight: bold;
+  color: #fff;
+  background-color: #c0392b;
+  padding: 4px 8px;
+  border-radius: 4px;
+  margin-top: 8px;
+  display: inline-block;
+}
+
+.foul-warning {
+  background-color: #f39c12;
+  color: #000;
+}
+
+/* Game Log Styles */
+.game-log {
+  width: 100%;
+  margin-top: 1.5rem;
+  padding: 1rem;
+  background-color: #f8f9fa;
+  border-radius: var(--border-radius);
+  border: 1px solid #dee2e6;
+}
+
+.log-title {
+  margin-top: 0;
+  margin-bottom: 0.5rem;
+  font-size: 1.2rem;
+  color: #495057;
+}
+
+.log-list {
+  list-style-type: none;
+  padding: 0;
+  margin: 0;
+  max-height: 200px;
+  overflow-y: auto;
+  font-size: 0.9rem;
+}
+
+.log-entry {
+  padding: 0.5rem 0.25rem;
+  border-bottom: 1px solid #e9ecef;
+  color: #6c757d;
+}
+
+.log-entry:last-child {
+  border-bottom: none;
+}
+
+.game-log-table-container {
+  margin: 2.5rem auto 0 auto;
+  max-width: 100vw;
+  width: 100%;
+  overflow-x: auto;
+  background: #181818;
+  border-radius: 12px;
+  box-shadow: 0 2px 16px rgba(0,0,0,0.12);
+  padding: 1.5rem 1rem;
+}
+.game-log-table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 1.05rem;
+  background: #222;
+  color: #fff;
+}
+.game-log-table th, .game-log-table td {
+  border: 1px solid #444;
+  padding: 0.5rem 0.7rem;
+  text-align: center;
+}
+.game-log-table th {
+  background: #333;
+  font-weight: 700;
+  font-size: 1.1rem;
+}
+.game-log-table tr:nth-child(even) td {
+  background: #232323;
+}
+.game-log-table tr:nth-child(odd) td {
+  background: #181818;
+}
+.game-log-table .log-player-col {
+  background: #222;
+  color: #ff9800;
+  font-size: 1.15rem;
+  border-bottom: 2px solid #ff9800;
+}
+
+.turn-change-controls {
+  display: flex;
+  justify-content: center;
+  margin: 2.5rem 0 1.5rem 0;
+}
+.turn-change-btn {
+  background: #ff9800;
+  color: #222;
+  font-size: 2.2rem;
+  font-weight: 900;
+  padding: 2rem 4rem;
+  border: none;
+  border-radius: 18px;
+  box-shadow: 0 4px 32px rgba(255,152,0,0.18), 0 2px 8px rgba(0,0,0,0.12);
+  cursor: pointer;
+  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
+  letter-spacing: 1px;
+  margin: 0 auto;
+  display: block;
+}
+.turn-change-btn:hover, .turn-change-btn:focus {
+  background: #ffa726;
+  color: #111;
+  box-shadow: 0 6px 40px rgba(255,152,0,0.28), 0 2px 8px rgba(0,0,0,0.18);
+}
+.pending-foul-info {
+  margin-left: 1.5rem;
+  font-size: 1.2rem;
+  color: #ffc107;
+  font-weight: 700;
+}
+.selected {
+  outline: 3px solid #ff9800 !important;
+  background: #fff3e0 !important;
+  color: #222 !important;
+} 

src/lib/features/game-detail/GameDetail.tsx

@@ -0,0 +1,104 @@
+import { h } from 'preact';
+import styles from './GameDetail.module.css';
+import type { Game, EndlosGame } from '@lib/domain/types';
+
+interface GameDetailProps {
+  game: Game | undefined;
+  onFinishGame: () => void;
+  onUpdateScore: (player: number, change: number) => void;
+  onUpdateGame?: (game: EndlosGame) => void;
+  onUndo?: () => void;
+  onForfeit?: () => void;
+  onBack: () => void;
+}
+
+/**
+ * Game detail view for a single game.
+ */
+const GameDetail = ({ game, onFinishGame, onUpdateScore, onUpdateGame, onUndo, onForfeit, onBack }: GameDetailProps) => {
+  if (!game) return null;
+
+  const handleScoreUpdate = (playerIndex: number, change: number) => {
+    onUpdateScore(playerIndex, change);
+    // Silent update; toast notifications removed
+  };
+
+
+  const isCompleted = game.status === 'completed';
+  
+  const playerNames = [game.player1, game.player2, game.player3].filter(Boolean);
+  const scores = [game.score1, game.score2, game.score3].filter((_, i) => playerNames[i]);
+
+  return (
+    <div className={styles['game-detail']}>
+      <div className={styles['game-title']}>
+        {game.gameType}{game.raceTo ? ` | Race to ${game.raceTo}` : ''}
+      </div>
+      <div className={styles['scores-container']}>
+        {playerNames.map((name, idx) => {
+          const currentScore = scores[idx];
+          const progressPercentage = game.raceTo ? Math.min((currentScore / game.raceTo) * 100, 100) : 0;
+          
+          return (
+            <div
+              className={styles['player-score'] + (name === 'Fränky' ? ' ' + styles['franky'] : '')}
+              key={name + idx}
+            >
+              <span className={styles['player-name']}>
+                {name}
+                {(() => {
+                  const order = (game as any).breakOrder as number[] | undefined;
+                  const breakerIdx = (game as any).currentBreakerIdx as number | undefined;
+                  if (order && typeof breakerIdx === 'number' && order[breakerIdx] === idx + 1) {
+                    return <span title="Break" aria-label="Break" style={{ display: 'inline-block', width: '1em', height: '1em', borderRadius: '50%', background: '#fff', marginLeft: 6, verticalAlign: 'middle' }} />;
+                  }
+                  return null;
+                })()}
+              </span>
+              <div className={styles['progress-bar']}>
+                <div 
+                  className={styles['progress-fill']} 
+                  style={{ width: `${progressPercentage}%` }}
+                />
+              </div>
+              <span
+                className={styles['score']}
+                id={`score${idx + 1}`}
+                onClick={() => !isCompleted && onUpdateScore(idx + 1, 1)}
+                onKeyDown={(e) => {
+                  if (!isCompleted && (e.key === 'Enter' || e.key === ' ')) {
+                    e.preventDefault();
+                    onUpdateScore(idx + 1, 1);
+                  }
+                }}
+                role="button"
+                tabIndex={isCompleted ? -1 : 0}
+                aria-label={`Aktueller Punktestand für ${name}: ${scores[idx]}. Klicken oder Enter drücken zum Erhöhen.`}
+              >
+                {scores[idx]}
+              </span>
+              {/* +/- buttons removed per issue #29. Tap score to +1; use Undo to revert. */}
+            </div>
+          );
+        })}
+      </div>
+      <div className={styles['game-detail-controls']}>
+        <button className="btn" onClick={onBack} aria-label="Zurück zur Liste">Zurück zur Liste</button>
+        {onUndo && (
+          <button 
+            className="btn btn--secondary" 
+            onClick={() => {
+              onUndo();
+            }}
+            aria-label="Rückgängig"
+          >
+            ↶ Rückgängig
+          </button>
+        )}
+        <button className="btn" disabled={isCompleted} onClick={onFinishGame} aria-label={isCompleted ? 'Abgeschlossen' : 'Spiel beenden'}>{isCompleted ? 'Abgeschlossen' : 'Spiel beenden'}</button>
+      </div>
+    </div>
+  );
+};
+
+export default GameDetail; 

src/lib/features/game-detail/README.md

@@ -0,0 +1,34 @@
+# Game Detail (`@lib/features/game-detail`)
+
+`GameDetail` shows a single game's state, including live score controls and break indicators.
+
+## Props
+
+- `game: Game`
+- `onUpdateScore(playerIndex: number, delta: number): void`
+- `onFinishGame(): void`
+- `onUpdateGame?(game: EndlosGame): void`
+- `onUndo?(): void`
+- `onForfeit?(): void`
+- `onBack(): void`
+
+## Highlights
+
+- Handles both standard and endlos game modes.
+- Displays current breaker marker based on `breakOrder` / `currentBreakerIdx`.
+- Uses accessible button semantics so scores can be increased via keyboard.
+
+## Example
+
+```tsx
+import { GameDetail } from '@lib/features/game-detail';
+
+<GameDetail
+  game={selectedGame}
+  onUpdateScore={(player, change) => GameService.saveGame(...)}
+  onFinishGame={endGame}
+  onBack={showGameList}
+/>;
+```
+
+

src/lib/features/game-detail/index.ts

@@ -0,0 +1,2 @@
+export { default as GameDetail } from './GameDetail';
+

src/lib/features/game-lifecycle/GameCompletionModal.module.css

@@ -0,0 +1,160 @@
+/* Only GameCompletionModal-specific styles. Shared modal styles are now in Modal.module.css */
+.final-scores {
+    margin: 20px 0;
+}
+.final-score {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 18px 0;
+    margin-bottom: 8px;
+    background: #333;
+    border-radius: 8px;
+    font-size: 1.2rem;
+    color: #fff;
+}
+.final-score .player-name {
+    font-size: 1.2rem;
+    font-weight: bold;
+    color: #fff;
+}
+.final-score .score {
+    font-size: 1.2rem;
+    font-weight: bold;
+    color: #fff;
+}
+.winner-announcement {
+    text-align: center;
+    margin: 20px 0 0 0;
+    padding: 32px 16px 24px 16px; /* extra top padding to keep icons inside */
+    background: linear-gradient(135deg, #ff9800 0%, #ffa726 100%);
+    border-radius: 16px;
+    font-size: 1.2rem;
+    color: #222;
+    font-weight: 700;
+    box-shadow: 0 8px 32px rgba(255, 152, 0, 0.3);
+    animation: celebrationPulse 2s ease-in-out infinite;
+    position: relative;
+    overflow: visible; /* avoid clipping decorative icons */
+}
+
+.winner-announcement::before {
+    content: '🎉';
+    position: absolute;
+    top: 6px;
+    left: 20px;
+    font-size: 24px;
+    animation: bounce 1s ease-in-out infinite;
+}
+
+.winner-announcement::after {
+    content: '🏆';
+    position: absolute;
+    top: 6px;
+    right: 20px;
+    font-size: 24px;
+    animation: bounce 1s ease-in-out infinite 0.5s;
+}
+
+.winner-announcement h3 {
+    margin: 0;
+    font-size: 1.8rem;
+    color: #222;
+    text-align: center;
+    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
+    text-transform: uppercase;
+    letter-spacing: 1px;
+    font-weight: 900;
+}
+
+@keyframes celebrationPulse {
+    0%, 100% {
+        transform: scale(1);
+        box-shadow: 0 8px 32px rgba(255, 152, 0, 0.3);
+    }
+    50% {
+        transform: scale(1.02);
+        box-shadow: 0 12px 40px rgba(255, 152, 0, 0.4);
+    }
+}
+
+@keyframes bounce {
+    0%, 20%, 50%, 80%, 100% {
+        transform: translateY(0);
+    }
+    40% {
+        transform: translateY(-10px);
+    }
+    60% {
+        transform: translateY(-5px);
+    }
+}
+.btn {
+    flex: 1;
+    padding: 18px 0;
+    font-size: 1.1rem;
+    border: none;
+    border-radius: 8px;
+    cursor: pointer;
+    color: #fff;
+    background: #333;
+    font-weight: 600;
+    transition: background 0.2s;
+}
+.btn--warning {
+    background: #f44336;
+}
+.btn:not(.btn--warning):hover {
+    background: #444;
+}
+.btn--warning:hover {
+    background: #d32f2f;
+}
+@media (max-width: 600px) {
+    .btn {
+        font-size: 1rem;
+        padding: 14px 0;
+    }
+}
+
+.stats-container {
+    margin-top: 1.5rem;
+    padding-top: 1rem;
+    border-top: 1px solid #dee2e6;
+}
+
+.stats-title {
+    text-align: center;
+    font-size: 1.3rem;
+    color: #495057;
+    margin-bottom: 1rem;
+}
+
+.player-stats {
+    margin-bottom: 1rem;
+    padding: 0.75rem;
+    background-color: #f8f9fa;
+    border-radius: 4px;
+}
+
+.player-name-stats {
+    font-weight: bold;
+    margin-bottom: 0.5rem;
+    color: #343a40;
+}
+
+.stat-item {
+    display: flex;
+    justify-content: space-between;
+    font-size: 0.95rem;
+    color: #6c757d;
+}
+
+.stat-item strong {
+    color: #212529;
+}
+
+.btn {
+    padding: 0.75rem 1.5rem;
+    border-radius: 4px;
+} 

src/lib/features/game-lifecycle/GameCompletionModal.tsx

@@ -0,0 +1,63 @@
+import { h } from 'preact';
+import modalStyles from '@lib/ui/Modal.module.css';
+import styles from './GameCompletionModal.module.css';
+import type { Game } from '@lib/domain/types';
+
+interface GameCompletionModalProps {
+  open: boolean;
+  game: Game | null;
+  onConfirm: () => void;
+  onClose: () => void;
+  onRematch: () => void;
+}
+
+/**
+ * Modal shown when a game is completed.
+ */
+const GameCompletionModal = ({ open, game, onConfirm, onClose, onRematch }: GameCompletionModalProps) => {
+  if (!open || !game) return null;
+
+  const playerNames = [game.player1, game.player2, game.player3].filter(Boolean);
+  const scores = [game.score1, game.score2, game.score3].filter((_, i) => playerNames[i]);
+  let maxScore, winners, winnerText;
+
+  if (game.forfeitedBy) {
+    winnerText = `${game.winner} hat gewonnen, da ${game.forfeitedBy} aufgegeben hat.`;
+  } else {
+    maxScore = Math.max(...scores);
+    winners = playerNames.filter((name, idx) => scores[idx] === maxScore);
+    winnerText = winners.length > 1
+      ? `Unentschieden zwischen ${winners.join(' und ')}`
+      : `${winners[0]} hat gewonnen!`;
+  }
+  
+  return (
+    <div id="game-completion-modal" className={modalStyles['modal'] + ' ' + modalStyles['show']} role="dialog" aria-modal="true" aria-labelledby="completion-modal-title">
+      <div className={modalStyles['modal-content']}>
+        <div className={modalStyles['modal-header']}>
+          <span className={modalStyles['modal-title']} id="completion-modal-title">Spiel beendet</span>
+          <button className={modalStyles['close-button']} onClick={onClose} aria-label="Schließen">×</button>
+        </div>
+        <div className={modalStyles['modal-body']}>
+          <div className={styles['final-scores']}>
+            {playerNames.map((name, idx) => (
+              <div className={styles['final-score']} key={name + idx}>
+                <span className={styles['player-name']}>{name}</span>
+                <span className={styles['score']}>{scores[idx]}</span>
+              </div>
+            ))}
+          </div>
+          <div className={styles['winner-announcement']}><h3>{winnerText}</h3></div>
+
+        </div>
+        <div className={modalStyles['modal-footer']}>
+          <button className={styles['btn'] + ' ' + styles['btn--warning']} onClick={onConfirm} aria-label="Bestätigen">Bestätigen</button>
+          <button className={styles['btn'] + ' ' + styles['btn--primary']} onClick={onRematch} aria-label="Rematch">Rematch</button>
+          <button className={styles['btn']} onClick={onClose} aria-label="Abbrechen">Abbrechen</button>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default GameCompletionModal; 

src/lib/features/game-lifecycle/README.md

@@ -0,0 +1,30 @@
+# Game Lifecycle (`@lib/features/game-lifecycle`)
+
+Utility components that react to lifecycle transitions in a game session.
+
+## GameCompletionModal
+
+- Props:
+  - `open: boolean`
+  - `game: Game | null`
+  - `onConfirm(): void`
+  - `onClose(): void`
+  - `onRematch(): void`
+- Renders final scores, winner messaging, and rematch CTA.
+- Reuses `@lib/ui/Modal.module.css` for a consistent look-and-feel.
+
+## Example
+
+```tsx
+import { GameCompletionModal } from '@lib/features/game-lifecycle';
+
+<GameCompletionModal
+  open={state.open}
+  game={state.game}
+  onConfirm={finalise}
+  onRematch={startRematch}
+  onClose={closeModal}
+/>;
+```
+
+

src/lib/features/game-lifecycle/index.ts

@@ -0,0 +1,2 @@
+export { default as GameCompletionModal } from './GameCompletionModal';
+

src/lib/features/game-list/GameList.module.css

@@ -0,0 +1,284 @@
+/* GameList-specific styles using design system tokens */
+.screen.active {
+    display: block;
+    opacity: 1;
+    transform: translateX(0);
+    position: relative;
+}
+
+.screen-content {
+    display: flex;
+    flex-direction: column;
+    min-height: 100vh;
+    padding: var(--space-lg);
+    overflow-y: auto;
+    -webkit-overflow-scrolling: touch;
+}
+
+.screen-title {
+    font-size: var(--font-size-xxl);
+    margin-bottom: var(--space-lg);
+    font-weight: 700;
+}
+
+.game-list {
+    width: 100%;
+    display: flex;
+    flex-direction: column;
+    min-height: 0;
+}
+
+/* Filter buttons with improved symmetry */
+.filter-buttons {
+    display: grid;
+    grid-template-columns: repeat(3, 1fr);
+    gap: var(--space-sm);
+    margin: var(--space-lg) 0 var(--space-md) 0;
+    border-radius: var(--radius-md);
+    overflow: hidden;
+    box-shadow: var(--shadow-sm);
+    flex-shrink: 0;
+}
+
+.filter-button {
+    background: var(--color-secondary);
+    color: var(--color-text);
+    border: none;
+    font-size: var(--font-size-base);
+    padding: var(--space-md) 0;
+    cursor: pointer;
+    font-weight: 500;
+    transition: all var(--transition-base);
+    min-height: var(--touch-target-comfortable);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.filter-button:hover {
+    background: var(--color-secondary-hover);
+    transform: translateY(-1px);
+}
+
+.filter-button.active {
+    background: var(--color-primary);
+    color: white;
+    box-shadow: var(--shadow-md);
+}
+
+/* Games container with improved spacing */
+.games-container {
+    width: 100%;
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-md);
+    margin-top: var(--space-lg);
+    flex: 1;
+    overflow-y: auto;
+    overflow-x: hidden;
+    min-height: 0;
+    padding-bottom: var(--space-md);
+}
+
+/* Game item with better symmetry and spacing */
+.game-item {
+    display: grid;
+    grid-template-columns: 1fr auto;
+    align-items: center;
+    gap: var(--space-md);
+    padding: var(--space-lg);
+    border-radius: var(--radius-lg);
+    box-shadow: var(--shadow-sm);
+    transition: all var(--transition-base);
+    cursor: pointer;
+    background: var(--color-surface);
+    border: 1px solid var(--color-border);
+}
+
+.game-item:hover {
+    transform: translateY(-2px);
+    box-shadow: var(--shadow-md);
+    border-color: var(--color-primary);
+}
+
+.game-item.active {
+    background: var(--color-success);
+    border-color: var(--color-success);
+}
+
+.game-item.completed {
+    background: var(--color-surface);
+    opacity: 0.8;
+    border-color: var(--color-border);
+}
+
+/* Game info with improved layout */
+.game-info {
+    display: grid;
+    grid-template-columns: auto 1fr auto;
+    align-items: center;
+    gap: var(--space-lg);
+    width: 100%;
+    cursor: pointer;
+}
+
+.game-type {
+    font-weight: 700;
+    font-size: var(--font-size-lg);
+    color: var(--color-text);
+    white-space: nowrap;
+    min-width: 120px;
+    text-align: center;
+    background: var(--color-secondary);
+    padding: var(--space-sm) var(--space-md);
+    border-radius: var(--radius-sm);
+}
+
+.player-names {
+    color: var(--color-text);
+    font-size: var(--font-size-lg);
+    font-weight: 500;
+    text-align: center;
+    flex: 1;
+}
+
+.game-scores {
+    font-size: var(--font-size-xl);
+    font-weight: 700;
+    text-align: center;
+    color: var(--color-primary);
+    min-width: 120px;
+    background: var(--color-background);
+    padding: var(--space-sm) var(--space-md);
+    border-radius: var(--radius-sm);
+}
+
+/* Delete button with improved touch target */
+.delete-button {
+    width: var(--touch-target-comfortable);
+    height: var(--touch-target-comfortable);
+    border: none;
+    background: var(--color-danger);
+    color: white;
+    border-radius: 50%;
+    font-size: var(--font-size-lg);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    transition: all var(--transition-base);
+    cursor: pointer;
+    box-shadow: var(--shadow-sm);
+}
+
+.delete-button::before {
+    content: '🗑️';
+    font-size: var(--font-size-lg);
+}
+
+.delete-button:hover {
+    background: #cc0000;
+    transform: scale(1.05);
+    box-shadow: var(--shadow-md);
+}
+
+.delete-button:active {
+    transform: scale(0.95);
+}
+
+/* Empty state styling */
+.empty-state {
+    text-align: center;
+    padding: var(--space-xxl);
+    color: var(--color-text-muted);
+    font-size: var(--font-size-lg);
+    background: var(--color-surface);
+    border-radius: var(--radius-lg);
+    border: 2px dashed var(--color-border);
+}
+
+/* Page header */
+.page-header {
+    font-size: var(--font-size-xxxl);
+    font-weight: 700;
+    color: var(--color-text);
+    background: var(--color-surface);
+    padding: var(--space-lg) 0 var(--space-md) 0;
+    margin-bottom: var(--space-sm);
+    text-align: left;
+    width: 100%;
+    letter-spacing: 0.5px;
+    border-radius: var(--radius-lg);
+}
+
+/* Tablet-specific improvements */
+@media (min-width: 768px) and (max-width: 1024px) {
+    .screen-content {
+        padding: var(--space-xl);
+    }
+    
+    .filter-buttons {
+        gap: var(--space-md);
+        margin: var(--space-xl) 0 var(--space-lg) 0;
+    }
+    
+    .filter-button {
+        font-size: var(--font-size-lg);
+        padding: var(--space-lg) 0;
+        min-height: var(--touch-target-comfortable);
+    }
+    
+    .game-item {
+        padding: var(--space-xl);
+        gap: var(--space-lg);
+    }
+    
+    .game-info {
+        gap: var(--space-xl);
+    }
+    
+    .game-type {
+        font-size: var(--font-size-xl);
+        min-width: 150px;
+        padding: var(--space-md) var(--space-lg);
+    }
+    
+    .player-names {
+        font-size: var(--font-size-xl);
+    }
+    
+    .game-scores {
+        font-size: var(--font-size-xxl);
+        min-width: 150px;
+        padding: var(--space-md) var(--space-lg);
+    }
+    
+    .delete-button {
+        width: 64px;
+        height: 64px;
+        font-size: var(--font-size-xl);
+    }
+    
+    .empty-state {
+        font-size: var(--font-size-xl);
+        padding: var(--space-xxl) var(--space-xl);
+    }
+}
+
+/* Mobile adjustments */
+@media (max-width: 767px) {
+    .screen-content {
+        padding: var(--space-md);
+    }
+    
+    .game-info {
+        grid-template-columns: 1fr;
+        gap: var(--space-md);
+        text-align: center;
+    }
+    
+    .game-type,
+    .game-scores {
+        min-width: auto;
+        width: 100%;
+    }
+} 

src/lib/features/game-list/GameList.tsx

@@ -0,0 +1,129 @@
+import { h } from 'preact';
+import { Card } from '@lib/ui/Card';
+import { Button } from '@lib/ui/Button';
+import styles from './GameList.module.css';
+import type { Game, GameFilter, StandardGame } from '@lib/domain/types';
+
+interface GameListProps {
+  games: Game[];
+  filter: GameFilter;
+  setFilter: (filter: GameFilter) => void;
+  onShowGameDetail: (gameId: number) => void;
+  onDeleteGame: (gameId: number) => void;
+}
+
+export default function GameList({ 
+  games, 
+  filter = 'all', 
+  setFilter, 
+  onShowGameDetail, 
+  onDeleteGame 
+}: GameListProps) {
+  const filteredGames = games
+    .filter(game => {
+      if (filter === 'active') return game.status === 'active';
+      if (filter === 'completed') return game.status === 'completed';
+      return true;
+    })
+    .sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime());
+
+  const getPlayerNames = (game: Game): string => {
+    if ('players' in game) {
+      return game.players.map(p => p.name).join(' vs ');
+    } else {
+      const standardGame = game as StandardGame;
+      return standardGame.player3
+        ? `${standardGame.player1} vs ${standardGame.player2} vs ${standardGame.player3}`
+        : `${standardGame.player1} vs ${standardGame.player2}`;
+    }
+  };
+
+  const getScores = (game: Game): string => {
+    if ('players' in game) {
+      return game.players.map(p => p.score).join(' - ');
+    } else {
+      const standardGame = game as StandardGame;
+      return standardGame.player3
+        ? `${standardGame.score1} - ${standardGame.score2} - ${standardGame.score3}`
+        : `${standardGame.score1} - ${standardGame.score2}`;
+    }
+  };
+
+  const filterButtons = [
+    { key: 'all' as const, label: 'Alle', ariaLabel: 'Alle Spiele anzeigen' },
+    { key: 'active' as const, label: 'Aktiv', ariaLabel: 'Nur aktive Spiele anzeigen' },
+    { key: 'completed' as const, label: 'Abgeschlossen', ariaLabel: 'Nur abgeschlossene Spiele anzeigen' },
+  ];
+
+  return (
+    <div className={styles['game-list']}>
+      <div className={styles['filter-buttons']}>
+        {filterButtons.map(({ key, label, ariaLabel }) => (
+          <Button
+            key={key}
+            variant={filter === key ? 'primary' : 'secondary'}
+            size="small"
+            onClick={() => setFilter(key)}
+            aria-label={ariaLabel}
+          >
+            {label}
+          </Button>
+        ))}
+      </div>
+      
+      <div className={styles['games-container']}>
+        {filteredGames.length === 0 ? (
+          <div className={styles['empty-state']}>Keine Spiele vorhanden</div>
+        ) : (
+          filteredGames.map(game => {
+          const playerNames = getPlayerNames(game);
+          const scores = getScores(game);
+          
+          return (
+            <Card
+              key={game.id}
+              variant="elevated"
+              className={
+                styles['game-item'] + ' ' + (game.status === 'completed' ? styles['completed'] : styles['active'])
+              }
+            >
+              <div 
+                className={styles['game-info']} 
+                onClick={() => onShowGameDetail(game.id)}
+                onKeyDown={(e) => {
+                  if (e.key === 'Enter' || e.key === ' ') {
+                    e.preventDefault();
+                    onShowGameDetail(game.id);
+                  }
+                }}
+                role="button" 
+                tabIndex={0} 
+                aria-label={`Details für Spiel ${playerNames}`}
+                aria-describedby={`game-${game.id}-description`}
+              >
+                <div className={styles['game-type']}>
+                  {game.gameType}{game.raceTo ? ` | ${game.raceTo}` : ''}
+                </div>
+                <div className={styles['player-names']}>{playerNames}</div>
+                <div className={styles['game-scores']}>{scores}</div>
+                <div id={`game-${game.id}-description`} className="sr-only">
+                  {game.gameType} Spiel zwischen {playerNames} mit dem Stand {scores}. 
+                  {game.status === 'completed' ? 'Abgeschlossen' : 'Aktiv'}
+                </div>
+              </div>
+              <Button
+                variant="danger"
+                size="small"
+                onClick={() => onDeleteGame(game.id)}
+                aria-label={`Spiel löschen: ${playerNames}`}
+              >
+                🗑
+              </Button>
+            </Card>
+          );
+        })
+        )}
+      </div>
+    </div>
+  );
+}

src/lib/features/game-list/README.md

@@ -0,0 +1,33 @@
+# Game List (`@lib/features/game-list`)
+
+Single component `GameList` renders the scoreboard overview with filter tabs.
+
+## Props
+
+- `games: Game[]`
+- `filter: GameFilter`
+- `setFilter(filter: GameFilter): void`
+- `onShowGameDetail(gameId: number): void`
+- `onDeleteGame(gameId: number): void`
+
+## Behaviour
+
+- Sorts games by `createdAt` (desc) and filters according to `filter`.
+- Derives player names/scores for both `StandardGame` and `EndlosGame`.
+- Uses `@lib/ui` primitives (`Button`, `Card`) for visuals.
+
+## Example
+
+```tsx
+import { GameList } from '@lib/features/game-list';
+
+<GameList
+  games={games}
+  filter={filter}
+  setFilter={setFilter}
+  onShowGameDetail={showDetail}
+  onDeleteGame={openDeleteModal}
+/>;
+```
+
+

src/lib/features/game-list/index.ts

@@ -0,0 +1,2 @@
+export { default as GameList } from './GameList';
+

src/lib/features/new-game/NewGame.module.css

@@ -0,0 +1,431 @@
+/* NewGame-specific styles only. Shared utility classes are now in global CSS. */
+.screen {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    min-height: 100vh;
+    display: none;
+    opacity: 0;
+    transform: translateX(100%);
+    transition: transform var(--transition-slow), opacity var(--transition-slow);
+}
+.screen-content {
+    display: flex;
+    flex-direction: column;
+    height: 100%;
+    padding: var(--space-lg);
+    overflow-y: auto;
+    overflow-x: hidden;
+    -webkit-overflow-scrolling: touch;
+    min-height: 0;
+}
+.screen-title {
+    font-size: clamp(1.25rem, 3vh, 1.5rem);
+    font-weight: 700;
+    color: var(--color-text);
+    margin-bottom: clamp(0.5rem, 2vh, 2rem);
+    letter-spacing: 0.5px;
+    text-align: center;
+}
+.player-inputs {
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-lg);
+    width: 100%;
+    margin-bottom: var(--space-xl);
+    flex-shrink: 1;
+    min-height: 0;
+}
+.player-input {
+    background: var(--color-background);
+    border-radius: var(--radius-md);
+    padding: var(--space-lg);
+    border: 2px solid var(--color-border);
+    transition: border-color var(--transition-base);
+    position: relative;
+    flex-shrink: 1;
+    min-height: 0;
+    overflow: hidden;
+}
+.player-input:focus-within {
+    border-color: var(--color-primary);
+    box-shadow: 0 0 0 3px var(--color-primary-light);
+}
+.player-input label {
+    display: block;
+    margin-bottom: clamp(0.5rem, 2vh, 1rem);
+    color: var(--color-text);
+    font-size: clamp(1rem, 2.5vh, 1.125rem);
+    font-weight: 600;
+}
+.name-input-container {
+    display: flex;
+    gap: var(--space-md);
+    position: relative;
+}
+.name-input {
+    flex: 1;
+    padding: var(--space-md);
+    border: 2px solid var(--color-border);
+    background: var(--color-surface);
+    color: var(--color-text);
+    font-size: var(--font-size-base);
+    min-height: var(--touch-target-comfortable);
+    border-radius: var(--radius-md);
+    transition: all var(--transition-base);
+}
+.name-input:focus {
+    outline: none;
+    border-color: var(--color-primary);
+    box-shadow: 0 0 0 3px var(--color-primary-light);
+}
+.game-settings {
+    margin-top: 0;
+    width: 100%;
+    margin-bottom: var(--space-xl);
+}
+.setting-group {
+    margin-bottom: var(--space-lg);
+}
+.setting-group label {
+    display: block;
+    margin-bottom: var(--space-md);
+    color: var(--color-text);
+    font-size: var(--font-size-lg);
+    font-weight: 600;
+}
+.setting-group select, .setting-group input {
+    width: 100%;
+    padding: var(--space-md);
+    border: 2px solid var(--color-border);
+    background: var(--color-surface);
+    color: var(--color-text);
+    font-size: var(--font-size-base);
+    min-height: var(--touch-target-comfortable);
+    border-radius: var(--radius-md);
+    transition: border-color var(--transition-base);
+}
+.setting-group input:focus, .setting-group select:focus {
+    outline: none;
+    border-color: var(--color-primary);
+    box-shadow: 0 0 0 3px var(--color-primary-light);
+}
+.validation-error {
+    color: var(--color-danger);
+    background: var(--color-surface);
+    border: 1px solid var(--color-danger);
+    border-radius: var(--radius-md);
+    padding: var(--space-md);
+    margin-bottom: var(--space-md);
+    font-size: var(--font-size-base);
+    text-align: center;
+    font-weight: 500;
+}
+.new-game-form {
+    width: 100%;
+    max-width: 600px;
+    margin: var(--space-xl) auto 0 auto;
+    background: var(--color-surface);
+    border-radius: var(--radius-xl);
+    box-shadow: var(--shadow-lg);
+    padding: 0;
+    display: flex;
+    flex-direction: column;
+    border: 1px solid var(--color-border);
+    flex: 1;
+    min-height: 0;
+    overflow: hidden;
+}
+
+.form-header {
+    flex-shrink: 0;
+    padding: clamp(0.5rem, 2vh, 2rem) var(--space-lg) clamp(0.25rem, 1vh, 1rem) var(--space-lg);
+}
+
+.form-content {
+    flex: 1;
+    overflow: hidden;
+    padding: 0 var(--space-lg);
+    min-height: 0;
+    display: flex;
+    flex-direction: column;
+}
+
+.form-footer {
+    flex-shrink: 0;
+    padding: var(--space-lg);
+}
+.progress-indicator {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    gap: clamp(0.5rem, 1.5vw, 1rem);
+    margin-bottom: clamp(0.5rem, 2vh, 1.5rem);
+}
+.progress-dot {
+    width: clamp(10px, 2vh, 16px);
+    height: clamp(10px, 2vh, 16px);
+    border-radius: 50%;
+    background: var(--color-border);
+    opacity: 0.4;
+    transition: all var(--transition-base);
+    position: relative;
+}
+.progress-dot.active {
+    background: var(--color-primary);
+    opacity: 1;
+    transform: scale(1.2);
+    box-shadow: 0 0 0 4px var(--color-primary-light);
+}
+.quick-pick-container {
+    flex: 1;
+    overflow: hidden;
+    min-height: 0;
+    display: flex;
+    flex-direction: column;
+}
+
+.quick-pick-btn {
+    min-width: 60px;
+    min-height: 36px;
+    font-size: clamp(0.75rem, 2vw, 1rem);
+    border-radius: var(--radius-md);
+    background: var(--color-secondary);
+    color: var(--color-text);
+    border: 1px solid var(--color-border);
+    cursor: pointer;
+    padding: 0.4rem 0.8rem;
+    transition: all var(--transition-base);
+    font-weight: 500;
+    flex-shrink: 0;
+}
+.quick-pick-btn:hover, .quick-pick-btn:focus {
+    background: var(--color-secondary-hover);
+    border-color: var(--color-primary);
+    transform: translateY(-1px);
+    outline: none;
+}
+.arrow-nav {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-top: var(--space-xxl);
+    width: 100%;
+    gap: var(--space-lg);
+}
+.arrow-btn {
+    font-size: 48px;
+    width: 80px;
+    height: 80px;
+    border-radius: 50%;
+    background: var(--color-secondary);
+    color: var(--color-text);
+    border: 2px solid var(--color-border);
+    box-shadow: var(--shadow-md);
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    transition: all var(--transition-base);
+    font-weight: bold;
+}
+.arrow-btn:hover, .arrow-btn:focus {
+    background: var(--color-secondary-hover);
+    border-color: var(--color-primary);
+    transform: translateY(-2px);
+    box-shadow: var(--shadow-lg);
+    outline: none;
+}
+.arrow-btn:active {
+    transform: translateY(0);
+}
+.clear-input-btn {
+    position: absolute;
+    right: var(--space-sm);
+    top: 50%;
+    transform: translateY(-50%);
+    background: none;
+    border: none;
+    cursor: pointer;
+    font-size: var(--font-size-xl);
+    color: var(--color-text-muted);
+    padding: var(--space-xs);
+    z-index: 2;
+    transition: color var(--transition-base);
+    border-radius: var(--radius-sm);
+    min-height: var(--touch-target-min);
+    min-width: var(--touch-target-min);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+.clear-input-btn:hover, .clear-input-btn:focus {
+    color: var(--color-text);
+    background: var(--color-secondary);
+    outline: none;
+}
+.game-type-selection {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: var(--space-md);
+    width: 100%;
+    margin: var(--space-md) 0;
+}
+.game-type-btn {
+    background: var(--color-background);
+    border: 2px solid var(--color-border);
+    color: var(--color-text);
+    font-size: var(--font-size-lg);
+    font-weight: 600;
+    padding: var(--space-xl);
+    border-radius: var(--radius-md);
+    cursor: pointer;
+    text-align: center;
+    transition: all var(--transition-base);
+    min-height: var(--touch-target-comfortable);
+}
+.game-type-btn:hover {
+    background: var(--color-surface);
+    border-color: var(--color-primary);
+    transform: translateY(-1px);
+}
+.game-type-btn.selected {
+    background: var(--color-primary);
+    border-color: var(--color-primary);
+    color: white;
+    box-shadow: var(--shadow-md);
+}
+.race-to-selection {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
+    gap: var(--space-md);
+    width: 100%;
+    margin: var(--space-md) 0;
+}
+.race-to-btn {
+    background: var(--color-background);
+    border: 2px solid var(--color-border);
+    color: var(--color-text);
+    font-size: var(--font-size-lg);
+    font-weight: 600;
+    padding: var(--space-lg) var(--space-sm);
+    border-radius: var(--radius-md);
+    cursor: pointer;
+    text-align: center;
+    transition: all var(--transition-base);
+    min-height: 80px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+.race-to-btn:hover {
+    background: var(--color-surface);
+    border-color: var(--color-primary);
+    transform: translateY(-1px);
+}
+.race-to-btn.selected {
+    background: var(--color-primary);
+    border-color: var(--color-primary);
+    color: white;
+    box-shadow: var(--shadow-md);
+}
+/* Match selected styling for quick pick buttons used in BreakRuleStep */
+.quick-pick-btn.selected {
+    background: var(--color-primary);
+    border-color: var(--color-primary);
+    color: white;
+    box-shadow: var(--shadow-md);
+}
+.custom-race-to {
+    display: flex;
+    gap: var(--space-md);
+    margin-top: var(--space-lg);
+    align-items: center;
+}
+.custom-race-to input {
+    flex-grow: 1;
+}
+.custom-race-to .arrow-btn {
+    width: 60px;
+    height: 60px;
+    font-size: 32px;
+    flex-shrink: 0;
+}
+.endlos-container {
+    width: 100%;
+    margin-bottom: 12px;
+}
+.endlos-btn {
+    width: 100%;
+}
+.player1-input.player-input {
+    border-color: var(--color-success);
+    background: linear-gradient(135deg, var(--color-success) 0%, rgba(76, 175, 80, 0.1) 100%);
+}
+.player2-input.player-input {
+    border-color: #1565c0;
+    background: linear-gradient(135deg, #1565c0 0%, rgba(21, 101, 192, 0.1) 100%);
+}
+.player3-input.player-input {
+    border-color: var(--color-secondary);
+    background: linear-gradient(135deg, var(--color-secondary) 0%, rgba(51, 51, 51, 0.1) 100%);
+}
+.player1-input.player-input input,
+.player2-input.player-input input,
+.player3-input.player-input input {
+    background: #fff;
+    color: #222;
+    border: 1px solid #ccc;
+}
+@media (min-width: 768px) and (max-width: 1024px) {
+    .screen-content {
+        padding: var(--space-xl);
+    }
+    .new-game-form {
+        max-width: 700px;
+        padding: var(--space-xxl) var(--space-xl) var(--space-xl) var(--space-xl);
+    }
+    .screen-title {
+        font-size: var(--font-size-xxxl);
+    }
+    .arrow-btn {
+        width: 100px;
+        height: 100px;
+        font-size: 56px;
+    }
+    .game-type-btn,
+    .race-to-btn {
+        padding: var(--space-xl);
+        font-size: var(--font-size-xl);
+        min-height: var(--touch-target-comfortable);
+    }
+    .quick-pick-btn {
+        min-height: var(--touch-target-comfortable);
+        font-size: var(--font-size-lg);
+        padding: var(--space-md) var(--space-lg);
+    }
+}
+@media (max-width: 767px) {
+    .screen-content {
+        padding: var(--space-md);
+    }
+    .new-game-form {
+        margin: var(--space-lg) auto 0 auto;
+        padding: var(--space-lg);
+    }
+    .game-type-selection {
+        grid-template-columns: 1fr;
+    }
+    .race-to-selection {
+        grid-template-columns: repeat(3, 1fr);
+    }
+    .arrow-nav {
+        gap: var(--space-md);
+    }
+    .arrow-btn {
+        width: 70px;
+        height: 70px;
+        font-size: 40px;
+    }
+} 

src/lib/features/new-game/PlayerSelectModal.module.css

@@ -0,0 +1,70 @@
+.modalOverlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: rgba(0, 0, 0, 0.7);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+}
+
+.modalContent {
+  background: #2c2c2c;
+  padding: 24px;
+  border-radius: 12px;
+  width: 90%;
+  max-width: 400px;
+  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
+  display: flex;
+  flex-direction: column;
+}
+
+.modalHeader {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 16px;
+}
+
+.modalHeader h3 {
+  margin: 0;
+  font-size: 1.5rem;
+  color: #fff;
+}
+
+.closeButton {
+  background: none;
+  border: none;
+  font-size: 2rem;
+  color: #aaa;
+  cursor: pointer;
+  padding: 0;
+  line-height: 1;
+}
+
+.playerList {
+  max-height: 60vh;
+  overflow-y: auto;
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.playerItem {
+  background: #444;
+  color: #fff;
+  border: none;
+  padding: 16px;
+  border-radius: 8px;
+  text-align: left;
+  font-size: 1.2rem;
+  cursor: pointer;
+  transition: background-color 0.2s;
+}
+
+.playerItem:hover {
+  background: #555;
+} 

src/lib/features/new-game/ProgressIndicator.tsx

@@ -0,0 +1,31 @@
+import { h } from 'preact';
+import type { JSX } from 'preact';
+import styles from './NewGame.module.css';
+
+interface ProgressIndicatorProps {
+  currentStep: number;
+  totalSteps?: number;
+  style?: JSX.CSSProperties;
+}
+
+export function ProgressIndicator({
+  currentStep,
+  totalSteps = 7,
+  style,
+}: ProgressIndicatorProps) {
+  const activeIndex = Math.min(Math.max(currentStep, 1), totalSteps) - 1;
+
+  return (
+    <div className={styles['progress-indicator']} style={style}>
+      {Array.from({ length: totalSteps }, (_, index) => {
+        const isActive = index === activeIndex;
+        const className = isActive
+          ? `${styles['progress-dot']} ${styles['active']}`
+          : styles['progress-dot'];
+
+        return <span key={index} className={className} />;
+      })}
+    </div>
+  );
+}
+

src/lib/features/new-game/README.md

@@ -0,0 +1,46 @@
+# New Game Wizard (`@lib/features/new-game`)
+
+Composable building blocks for the multi-step "start a new game" workflow.
+
+## Exports
+
+- `Player1Step`, `Player2Step`, `Player3Step` – Player name capture with history + quick picks.
+- `GameTypeStep` – Game type selector.
+- `RaceToStep` – Numeric race-to chooser with infinity support.
+- `BreakRuleStep`, `BreakOrderStep` – Break configuration helpers.
+- `PlayerSelectModal` – Modal surface for long player lists.
+
+All exports are surfaced via `@lib/features/new-game`.
+
+## Props & Contracts
+
+- Steps expect pure callbacks (`onNext`, `onCancel`) and derive their own UI state.
+- Player history arrays control quick-pick ordering. Empty arrays fall back gracefully.
+- Styling is shared via `NewGame.module.css` to keep a consistent visual language.
+
+## Integrating the Wizard
+
+```tsx
+import { Player1Step, Player2Step } from '@lib/features/new-game';
+import { useNewGameWizard } from '@lib/state';
+
+const wizard = useNewGameWizard();
+
+return (
+  <>
+    {wizard.newGameStep === 'player1' && (
+      <Player1Step
+        playerNameHistory={playerHistory}
+        onNext={(name) => {
+          wizard.updateGameData({ player1: name });
+          wizard.nextStep('player2');
+        }}
+        onCancel={wizard.resetWizard}
+      />
+    )}
+    {/* render subsequent steps analogously */}
+  </>
+);
+```
+
+

src/lib/features/new-game/index.ts

@@ -0,0 +1,10 @@
+export { PlayerSelectModal } from './steps/PlayerSelectModal';
+export { Player1Step } from './steps/Player1Step';
+export { Player2Step } from './steps/Player2Step';
+export { Player3Step } from './steps/Player3Step';
+export { GameTypeStep } from './steps/GameTypeStep';
+export { RaceToStep } from './steps/RaceToStep';
+export { BreakRuleStep } from './steps/BreakRuleStep';
+export { BreakOrderStep } from './steps/BreakOrderStep';
+export { ProgressIndicator } from './ProgressIndicator';
+

src/lib/features/new-game/steps/BreakOrderStep.tsx

@@ -0,0 +1,115 @@
+import { h } from 'preact';
+import { useEffect, useState } from 'preact/hooks';
+import styles from '../NewGame.module.css';
+import { ProgressIndicator } from '../ProgressIndicator';
+import type { BreakRule } from '@lib/domain/types';
+
+interface BreakOrderStepProps {
+  players: string[];
+  rule: BreakRule;
+  onNext: (first: number, second?: number) => void;
+  onCancel: () => void;
+  initialFirst?: number;
+  initialSecond?: number;
+}
+
+export const BreakOrderStep = ({ players, rule, onNext, onCancel, initialFirst = 1, initialSecond }: BreakOrderStepProps) => {
+  const playerCount = players.filter(Boolean).length;
+  const [first, setFirst] = useState<number>(initialFirst);
+  const [second, setSecond] = useState<number | undefined>(initialSecond);
+
+  useEffect(() => {
+    if (!initialSecond && rule === 'wechselbreak' && playerCount === 3) {
+      setSecond(2);
+    }
+  }, [initialSecond, rule, playerCount]);
+
+  const handleFirst = (idx: number) => {
+    setFirst(idx);
+    if (rule === 'winnerbreak' || (rule === 'wechselbreak' && playerCount === 2)) {
+      onNext(idx);
+    }
+  };
+
+  const handleSecond = (idx: number) => {
+    setSecond(idx);
+    onNext(first, idx);
+  };
+
+  return (
+    <form className={styles['new-game-form']} aria-label="Break-Reihenfolge wählen">
+      <div className={styles['form-header']}>
+        <div className={styles['screen-title']}>Wer hat den ersten Anstoss?</div>
+        <ProgressIndicator currentStep={7} style={{ marginBottom: 24 }} />
+      </div>
+
+      <div className={styles['form-content']}>
+        <div style={{ marginBottom: 16, fontWeight: 600 }}>Wer hat den ersten Anstoss?</div>
+        <div style={{ display: 'flex', gap: 16, flexWrap: 'wrap' }}>
+          {players.filter(Boolean).map((name, idx) => (
+            <button
+              key={`first-${idx}`}
+              type="button"
+              className={`${styles['quick-pick-btn']} ${first === (idx + 1) ? styles['selected'] : ''}`}
+              onClick={() => handleFirst(idx + 1)}
+              aria-label={`Zuerst: ${name}`}
+              style={{ minWidth: 160, minHeight: 64, fontSize: '1.2rem', padding: '16px 32px' }}
+            >
+              {name}
+            </button>
+          ))}
+        </div>
+
+        {rule === 'wechselbreak' && playerCount === 3 && (
+          <>
+            <div style={{ marginTop: 24, marginBottom: 16, fontWeight: 600 }}>Wer hat den zweiten Anstoss?</div>
+            <div style={{ display: 'flex', gap: 16, flexWrap: 'wrap' }}>
+              {players.filter(Boolean).map((name, idx) => (
+                <button
+                  key={`second-${idx}`}
+                  type="button"
+                  className={`${styles['quick-pick-btn']} ${second === (idx + 1) ? styles['selected'] : ''}`}
+                  onClick={() => handleSecond(idx + 1)}
+                  aria-label={`Zweites Break: ${name}`}
+                  style={{ minWidth: 160, minHeight: 64, fontSize: '1.2rem', padding: '16px 32px' }}
+                >
+                  {name}
+                </button>
+              ))}
+            </div>
+          </>
+        )}
+      </div>
+
+      <div className={styles['form-footer']}>
+        <div className={styles['arrow-nav']} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginTop: 48 }}>
+          <button type="button" className={styles['arrow-btn']} aria-label="Zurück" onClick={onCancel} style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}>
+            &#8592;
+          </button>
+          <button
+            type="button"
+            className={styles['arrow-btn']}
+            aria-label="Weiter"
+            onClick={() => {
+              if (rule === 'wechselbreak' && playerCount === 3) {
+                if (first > 0 && (second ?? 0) > 0) {
+                  handleSecond(second as number);
+                }
+              } else if (first > 0) {
+                onNext(first);
+              }
+            }}
+            disabled={
+              (rule === 'wechselbreak' && playerCount === 3) ? !(first > 0 && (second ?? 0) > 0) : !(first > 0)
+            }
+            style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer', opacity: ((rule === 'wechselbreak' && playerCount === 3) ? !(first > 0 && (second ?? 0) > 0) : !(first > 0)) ? 0.5 : 1 }}
+          >
+            &#8594;
+          </button>
+        </div>
+      </div>
+    </form>
+  );
+};
+
+

src/lib/features/new-game/steps/BreakRuleStep.tsx

@@ -0,0 +1,60 @@
+import { h } from 'preact';
+import { useState } from 'preact/hooks';
+import styles from '../NewGame.module.css';
+import { ProgressIndicator } from '../ProgressIndicator';
+import type { BreakRule } from '@lib/domain/types';
+
+interface BreakRuleStepProps {
+  onNext: (rule: BreakRule) => void;
+  onCancel: () => void;
+  initialValue?: BreakRule;
+}
+
+export const BreakRuleStep = ({ onNext, onCancel, initialValue = 'winnerbreak' }: BreakRuleStepProps) => {
+  const [rule, setRule] = useState<BreakRule>(initialValue ?? 'winnerbreak');
+
+  return (
+    <form className={styles['new-game-form']} aria-label="Break-Regel wählen">
+      <div className={styles['form-header']}>
+        <div className={styles['screen-title']}>Break-Regel wählen</div>
+        <ProgressIndicator currentStep={6} style={{ marginBottom: 24 }} />
+      </div>
+
+      <div className={styles['form-content']}>
+        <div style={{ display: 'flex', gap: 16, flexWrap: 'wrap' }}>
+          {[
+            { key: 'winnerbreak', label: 'Winnerbreak' },
+            { key: 'wechselbreak', label: 'Wechselbreak' },
+          ].map(opt => (
+            <button
+              key={opt.key}
+              type="button"
+              className={`${styles['quick-pick-btn']} ${rule === (opt.key as BreakRule) ? styles['selected'] : ''}`}
+              onClick={() => {
+                setRule(opt.key as BreakRule);
+                onNext(opt.key as BreakRule);
+              }}
+              aria-label={`Break-Regel wählen: ${opt.label}`}
+              style={{ minWidth: 160, minHeight: 64, fontSize: '1.2rem', padding: '16px 32px' }}
+            >
+              {opt.label}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      <div className={styles['form-footer']}>
+        <div className={styles['arrow-nav']} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginTop: 48 }}>
+          <button type="button" className={styles['arrow-btn']} aria-label="Zurück" onClick={onCancel} style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}>
+            &#8592;
+          </button>
+          <button type="button" className={styles['arrow-btn']} aria-label="Weiter" onClick={() => onNext(rule)} style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}>
+            &#8594;
+          </button>
+        </div>
+      </div>
+    </form>
+  );
+};
+
+

src/lib/features/new-game/steps/GameTypeStep.tsx

@@ -0,0 +1,87 @@
+import { h } from 'preact';
+import { useState } from 'preact/hooks';
+import styles from '../NewGame.module.css';
+import { ProgressIndicator } from '../ProgressIndicator';
+import { GAME_TYPES } from '@lib/domain/constants';
+
+interface GameTypeStepProps {
+  onNext: (type: string) => void;
+  onCancel: () => void;
+  initialValue?: string;
+}
+
+export const GameTypeStep = ({ onNext, onCancel, initialValue = '' }: GameTypeStepProps) => {
+  const [gameType, setGameType] = useState(initialValue);
+
+  const handleSelect = (selectedType: string) => {
+    setGameType(selectedType);
+    onNext(selectedType);
+  };
+
+  const handleSubmit = (e: Event) => {
+    e.preventDefault();
+    if (gameType) {
+      onNext(gameType);
+    }
+  };
+
+  return (
+    <form className={styles['new-game-form']} onSubmit={handleSubmit} aria-label="Spielart auswählen">
+      <div className={styles['form-header']}>
+        <div className={styles['screen-title']}>Spielart auswählen</div>
+        <ProgressIndicator currentStep={4} style={{ marginBottom: 24 }} />
+      </div>
+      
+      <div className={styles['form-content']}>
+        <div className={styles['game-type-selection']}>
+          {GAME_TYPES.map(({ value, label }) => (
+            <button
+              key={value}
+              type="button"
+              className={`${styles['game-type-btn']} ${gameType === value ? styles.selected : ''}`}
+              onClick={() => handleSelect(value)}
+            >
+              {label}
+            </button>
+          ))}
+        </div>
+      </div>
+      
+      <div className={styles['form-footer']}>
+        <div className={styles['arrow-nav']} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+        <button
+          type="button"
+          className={styles['arrow-btn']}
+          aria-label="Zurück"
+          onClick={onCancel}
+          style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}
+        >
+          &#8592;
+        </button>
+        <button
+          type="submit"
+          className={styles['arrow-btn']}
+          aria-label="Weiter"
+          disabled={!gameType}
+          style={{
+            fontSize: 48,
+            width: 80,
+            height: 80,
+            borderRadius: '50%',
+            background: '#222',
+            color: '#fff',
+            border: 'none',
+            boxShadow: '0 2px 8px rgba(0,0,0,0.15)',
+            cursor: 'pointer',
+            opacity: !gameType ? 0.5 : 1,
+          }}
+        >
+          &#8594;
+        </button>
+        </div>
+      </div>
+    </form>
+  );
+};
+
+

src/lib/features/new-game/steps/Player1Step.tsx

@@ -0,0 +1,258 @@
+import { h } from 'preact';
+import { useEffect, useRef, useState } from 'preact/hooks';
+import styles from '../NewGame.module.css';
+import {
+  UI_CONSTANTS,
+  ERROR_MESSAGES,
+  ARIA_LABELS,
+  FORM_CONFIG,
+  ERROR_STYLES,
+} from '@lib/domain/constants';
+import { PlayerSelectModal } from './PlayerSelectModal';
+import { ProgressIndicator } from '../ProgressIndicator';
+
+interface PlayerStepProps {
+  playerNameHistory: string[];
+  onNext: (name: string) => void;
+  onCancel: () => void;
+  initialValue?: string;
+}
+
+export const Player1Step = ({ playerNameHistory, onNext, onCancel, initialValue = '' }: PlayerStepProps) => {
+  const [player1, setPlayer1] = useState(initialValue);
+  const [error, setError] = useState<string | null>(null);
+  const [filteredNames, setFilteredNames] = useState(playerNameHistory);
+  const [isModalOpen, setIsModalOpen] = useState(false);
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  useEffect(() => {
+    if (!player1) {
+      setFilteredNames(playerNameHistory);
+    } else {
+      setFilteredNames(
+        playerNameHistory.filter(name =>
+          name.toLowerCase().includes(player1.toLowerCase())
+        )
+      );
+    }
+  }, [player1, playerNameHistory]);
+
+  const handleSubmit = (e: Event) => {
+    e.preventDefault();
+    const trimmedName = player1.trim();
+    if (!trimmedName) {
+      setError(ERROR_MESSAGES.PLAYER1_REQUIRED);
+      if (inputRef.current) {
+        inputRef.current.focus();
+        inputRef.current.setAttribute('aria-invalid', 'true');
+      }
+      return;
+    }
+    if (trimmedName.length > FORM_CONFIG.MAX_PLAYER_NAME_LENGTH) {
+      setError(`Spielername darf maximal ${FORM_CONFIG.MAX_PLAYER_NAME_LENGTH} Zeichen lang sein`);
+      if (inputRef.current) {
+        inputRef.current.focus();
+        inputRef.current.setAttribute('aria-invalid', 'true');
+      }
+      return;
+    }
+    setError(null);
+    if (inputRef.current) {
+      inputRef.current.setAttribute('aria-invalid', 'false');
+    }
+    onNext(trimmedName);
+  };
+
+  const handleQuickPick = (name: string) => {
+    setError(null);
+    onNext(name);
+  };
+
+  const handleModalSelect = (name: string) => {
+    setIsModalOpen(false);
+    handleQuickPick(name);
+  };
+
+  const handleClear = () => {
+    setPlayer1('');
+    setError(null);
+    if (inputRef.current) inputRef.current.focus();
+  };
+
+  return (
+    <form className={styles['new-game-form']} onSubmit={handleSubmit} aria-label="Spieler 1 Eingabe" autoComplete="off">
+      <div className={styles['form-header']}>
+        <div className={styles['screen-title']}>Name Spieler 1</div>
+        <ProgressIndicator
+          currentStep={1}
+          style={{ marginBottom: UI_CONSTANTS.MARGIN_BOTTOM_MEDIUM }}
+        />
+      </div>
+      
+      <div className={styles['form-content']}>
+        <div className={styles['player-input'] + ' ' + styles['player1-input']} style={{ marginBottom: UI_CONSTANTS.MARGIN_BOTTOM_LARGE, position: 'relative' }}>
+        <label htmlFor="player1-input" style={{ fontSize: UI_CONSTANTS.LABEL_FONT_SIZE, fontWeight: 600 }}>Spieler 1</label>
+        <div style={{ position: 'relative', width: '100%' }}>
+          <input
+            id="player1-input"
+            className={styles['name-input']}
+            placeholder="Name Spieler 1"
+            value={player1}
+            onInput={(e: Event) => {
+              const target = e.target as HTMLInputElement;
+              const value = target.value;
+              setPlayer1(value);
+              if (value.length > FORM_CONFIG.MAX_PLAYER_NAME_LENGTH) {
+                setError(`Spielername darf maximal ${FORM_CONFIG.MAX_PLAYER_NAME_LENGTH} Zeichen lang sein`);
+                target.setAttribute('aria-invalid', 'true');
+              } else if (value.trim() && error) {
+                setError(null);
+                target.setAttribute('aria-invalid', 'false');
+              }
+            }}
+            autoComplete="off"
+            aria-label="Name Spieler 1"
+            aria-describedby="player1-help"
+            style={{ 
+              fontSize: UI_CONSTANTS.INPUT_FONT_SIZE, 
+              minHeight: UI_CONSTANTS.INPUT_MIN_HEIGHT, 
+              marginTop: 12, 
+              marginBottom: 12, 
+              width: '100%', 
+              paddingRight: UI_CONSTANTS.INPUT_PADDING_RIGHT 
+            }}
+            ref={inputRef}
+          />
+          <div id="player1-help" className="sr-only">
+            Geben Sie den Namen für Spieler 1 ein. Maximal {FORM_CONFIG.MAX_PLAYER_NAME_LENGTH} Zeichen erlaubt.
+          </div>
+          {player1.length > FORM_CONFIG.CHARACTER_COUNT_WARNING_THRESHOLD && (
+            <div style={{ 
+              fontSize: '0.875rem', 
+              color: player1.length > FORM_CONFIG.MAX_PLAYER_NAME_LENGTH ? '#f44336' : '#ff9800',
+              marginTop: '4px',
+              textAlign: 'right'
+            }}>
+              {player1.length}/{FORM_CONFIG.MAX_PLAYER_NAME_LENGTH} Zeichen
+            </div>
+          )}
+          {player1 && (
+            <button
+              type="button"
+              className={styles['clear-input-btn']}
+              aria-label="Feld leeren"
+              onClick={handleClear}
+              style={{
+                position: 'absolute',
+                right: 8,
+                top: '50%',
+                transform: 'translateY(-50%)',
+                background: 'none',
+                border: 'none',
+                cursor: 'pointer',
+                fontSize: 24,
+                color: '#aaa',
+                padding: 0,
+                zIndex: 2
+              }}
+              tabIndex={0}
+            >
+              ×
+            </button>
+          )}
+        </div>
+        {filteredNames.length > 0 && (
+          <div style={{ display: 'flex', flexWrap: 'wrap', gap: 12, marginTop: 8 }}>
+            {filteredNames.slice(0, UI_CONSTANTS.MAX_QUICK_PICKS).map((name, idx) => (
+              <button
+                type="button"
+                key={name + idx}
+                className={styles['quick-pick-btn']}
+                style={{ 
+                  fontSize: UI_CONSTANTS.QUICK_PICK_FONT_SIZE, 
+                  padding: UI_CONSTANTS.QUICK_PICK_PADDING, 
+                  borderRadius: 8, 
+                  background: '#333', 
+                  color: '#fff', 
+                  border: 'none', 
+                  cursor: 'pointer' 
+                }}
+                onClick={() => handleQuickPick(name)}
+                aria-label={ARIA_LABELS.QUICK_PICK(name)}
+              >
+                {name}
+              </button>
+            ))}
+            {playerNameHistory.length > UI_CONSTANTS.MAX_QUICK_PICKS && (
+              <button
+                type="button"
+                className={styles['quick-pick-btn']}
+                style={{ 
+                  fontSize: UI_CONSTANTS.QUICK_PICK_FONT_SIZE, 
+                  padding: UI_CONSTANTS.QUICK_PICK_PADDING, 
+                  borderRadius: 8, 
+                  background: '#333', 
+                  color: '#fff', 
+                  border: 'none', 
+                  cursor: 'pointer' 
+                }}
+                onClick={() => setIsModalOpen(true)}
+                aria-label={ARIA_LABELS.SHOW_MORE_PLAYERS}
+              >
+                ...
+              </button>
+            )}
+          </div>
+        )}
+        </div>
+        {error && (
+          <div 
+            className={styles['validation-error']} 
+            style={{ 
+              marginBottom: 16,
+              ...ERROR_STYLES.CONTAINER
+            }}
+            role="alert"
+            aria-live="polite"
+          >
+            <span style={ERROR_STYLES.ICON}>⚠️</span>
+            {error}
+          </div>
+        )}
+      </div>
+      
+      <div className={styles['form-footer']}>
+        <div className={styles['arrow-nav']} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+        <button
+          type="button"
+          className={styles['arrow-btn']}
+          aria-label="Zurück"
+          onClick={onCancel}
+          style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}
+        >
+          &#8592;
+        </button>
+        <button
+          type="submit"
+          className={styles['arrow-btn']}
+          aria-label="Weiter"
+          disabled={!player1.trim()}
+          style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer', opacity: !player1.trim() ? 0.5 : 1 }}
+        >
+          &#8594;
+        </button>
+        </div>
+      </div>
+      
+      {isModalOpen && (
+        <PlayerSelectModal
+          players={playerNameHistory}
+          onSelect={handleModalSelect}
+          onClose={() => setIsModalOpen(false)}
+        />
+      )}
+    </form>
+  );
+};
+
+

src/lib/features/new-game/steps/Player2Step.tsx

@@ -0,0 +1,148 @@
+import { h } from 'preact';
+import { useEffect, useRef, useState } from 'preact/hooks';
+import styles from '../NewGame.module.css';
+import { ProgressIndicator } from '../ProgressIndicator';
+
+interface PlayerStepProps {
+  playerNameHistory: string[];
+  onNext: (name: string) => void;
+  onCancel: () => void;
+  initialValue?: string;
+}
+
+export const Player2Step = ({ playerNameHistory, onNext, onCancel, initialValue = '' }: PlayerStepProps) => {
+  const [player2, setPlayer2] = useState(initialValue);
+  const [error, setError] = useState<string | null>(null);
+  const [filteredNames, setFilteredNames] = useState(playerNameHistory);
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  useEffect(() => {
+    if (!player2) {
+      setFilteredNames(playerNameHistory);
+    } else {
+      setFilteredNames(
+        playerNameHistory.filter(name =>
+          name.toLowerCase().includes(player2.toLowerCase())
+        )
+      );
+    }
+  }, [player2, playerNameHistory]);
+
+  const handleSubmit = (e: Event) => {
+    e.preventDefault();
+    if (!player2.trim()) {
+      setError('Bitte Namen für Spieler 2 eingeben');
+      return;
+    }
+    setError(null);
+    onNext(player2.trim());
+  };
+
+  const handleQuickPick = (name: string) => {
+    setError(null);
+    onNext(name);
+  };
+
+  const handleClear = () => {
+    setPlayer2('');
+    setError(null);
+    if (inputRef.current) inputRef.current.focus();
+  };
+
+  return (
+    <form className={styles['new-game-form']} onSubmit={handleSubmit} aria-label="Spieler 2 Eingabe" autoComplete="off">
+      <div className={styles['form-header']}>
+        <div className={styles['screen-title']}>Name Spieler 2</div>
+        <ProgressIndicator currentStep={2} style={{ marginBottom: 24 }} />
+      </div>
+      
+      <div className={styles['form-content']}>
+        <div className={styles['player-input'] + ' ' + styles['player2-input']} style={{ marginBottom: 32, position: 'relative' }}>
+        <label htmlFor="player2-input" style={{ fontSize: '1.3rem', fontWeight: 600 }}>Spieler 2</label>
+        <div style={{ position: 'relative', width: '100%' }}>
+          <input
+            id="player2-input"
+            className={styles['name-input']}
+            placeholder="Name Spieler 2"
+            value={player2}
+            onInput={(e: Event) => {
+              const target = e.target as HTMLInputElement;
+              setPlayer2(target.value);
+            }}
+            autoComplete="off"
+            aria-label="Name Spieler 2"
+            style={{ fontSize: '1.2rem', minHeight: 48, marginTop: 12, marginBottom: 12, width: '100%', paddingRight: 44 }}
+            ref={inputRef}
+          />
+          {player2 && (
+            <button
+              type="button"
+              className={styles['clear-input-btn']}
+              aria-label="Feld leeren"
+              onClick={handleClear}
+              style={{
+                position: 'absolute',
+                right: 8,
+                top: '50%',
+                transform: 'translateY(-50%)',
+                background: 'none',
+                border: 'none',
+                cursor: 'pointer',
+                fontSize: 24,
+                color: '#aaa',
+                padding: 0,
+                zIndex: 2
+              }}
+              tabIndex={0}
+            >
+              ×
+            </button>
+          )}
+        </div>
+        {filteredNames.length > 0 && (
+          <div style={{ display: 'flex', flexWrap: 'wrap', gap: 12, marginTop: 8 }}>
+            {filteredNames.slice(0, 10).map((name, idx) => (
+              <button
+                type="button"
+                key={name + idx}
+                className={styles['quick-pick-btn']}
+                style={{ fontSize: '1.1rem', padding: '12px 20px', borderRadius: 8, background: '#333', color: '#fff', border: 'none', cursor: 'pointer' }}
+                onClick={() => handleQuickPick(name)}
+                aria-label={`Schnellauswahl: ${name}`}
+              >
+                {name}
+              </button>
+            ))}
+          </div>
+        )}
+        </div>
+        {error && <div className={styles['validation-error']} style={{ marginBottom: 16 }}>{error}</div>}
+      </div>
+      
+      <div className={styles['form-footer']}>
+        <div className={styles['arrow-nav']} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+          <button
+            type="button"
+            className={styles['arrow-btn']}
+            aria-label="Zurück"
+            onClick={onCancel}
+            style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}
+          >
+            &#8592;
+          </button>
+          <button
+            type="submit"
+            className={styles['arrow-btn']}
+            aria-label="Weiter"
+            disabled={!player2.trim()}
+            style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer', opacity: !player2.trim() ? 0.5 : 1 }}
+          >
+            &#8594;
+          </button>
+        </div>
+      </div>
+    </form>
+  );
+};
+
+

src/lib/features/new-game/steps/Player3Step.tsx

@@ -0,0 +1,154 @@
+import { h } from 'preact';
+import { useEffect, useRef, useState } from 'preact/hooks';
+import styles from '../NewGame.module.css';
+import { ProgressIndicator } from '../ProgressIndicator';
+
+interface PlayerStepProps {
+  playerNameHistory: string[];
+  onNext: (name: string) => void;
+  onCancel: () => void;
+  initialValue?: string;
+}
+
+export const Player3Step = ({ playerNameHistory, onNext, onCancel, initialValue = '' }: PlayerStepProps) => {
+  const [player3, setPlayer3] = useState(initialValue);
+  const [filteredNames, setFilteredNames] = useState(playerNameHistory);
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  useEffect(() => {
+    if (!player3) {
+      setFilteredNames(playerNameHistory);
+    } else {
+      setFilteredNames(
+        playerNameHistory.filter(name =>
+          name.toLowerCase().includes(player3.toLowerCase())
+        )
+      );
+    }
+  }, [player3, playerNameHistory]);
+
+  const handleSubmit = (e: Event) => {
+    e.preventDefault();
+    onNext(player3.trim());
+  };
+
+  const handleQuickPick = (name: string) => {
+    onNext(name);
+  };
+
+  const handleClear = () => {
+    setPlayer3('');
+    if (inputRef.current) inputRef.current.focus();
+  };
+
+  const handleSkip = (e: Event) => {
+    e.preventDefault();
+    onNext('');
+  };
+
+  return (
+    <form className={styles['new-game-form']} onSubmit={handleSubmit} aria-label="Spieler 3 Eingabe" autoComplete="off">
+      <div className={styles['form-header']}>
+        <div className={styles['screen-title']}>Name Spieler 3 (optional)</div>
+        <ProgressIndicator currentStep={3} style={{ marginBottom: 24 }} />
+      </div>
+      
+      <div className={styles['form-content']}>
+        <div className={styles['player-input'] + ' ' + styles['player3-input']} style={{ marginBottom: 32, position: 'relative' }}>
+        <label htmlFor="player3-input" style={{ fontSize: '1.3rem', fontWeight: 600 }}>Spieler 3 (optional)</label>
+        <div style={{ position: 'relative', width: '100%' }}>
+          <input
+            id="player3-input"
+            className={styles['name-input']}
+            placeholder="Name Spieler 3 (optional)"
+            value={player3}
+            onInput={(e: Event) => {
+              const target = e.target as HTMLInputElement;
+              setPlayer3(target.value);
+            }}
+            autoComplete="off"
+            aria-label="Name Spieler 3"
+            style={{ fontSize: '1.2rem', minHeight: 48, marginTop: 12, marginBottom: 12, width: '100%', paddingRight: 44 }}
+            ref={inputRef}
+          />
+          {player3 && (
+            <button
+              type="button"
+              className={styles['clear-input-btn']}
+              aria-label="Feld leeren"
+              onClick={handleClear}
+              style={{
+                position: 'absolute',
+                right: 8,
+                top: '50%',
+                transform: 'translateY(-50%)',
+                background: 'none',
+                border: 'none',
+                cursor: 'pointer',
+                fontSize: 24,
+                color: '#aaa',
+                padding: 0,
+                zIndex: 2
+              }}
+              tabIndex={0}
+            >
+              ×
+            </button>
+          )}
+        </div>
+        {filteredNames.length > 0 && (
+          <div style={{ display: 'flex', flexWrap: 'wrap', gap: 12, marginTop: 8 }}>
+            {filteredNames.slice(0, 10).map((name, idx) => (
+              <button
+                type="button"
+                key={name + idx}
+                className={styles['quick-pick-btn']}
+                style={{ fontSize: '1.1rem', padding: '12px 20px', borderRadius: 8, background: '#333', color: '#fff', border: 'none', cursor: 'pointer' }}
+                onClick={() => handleQuickPick(name)}
+                aria-label={`Schnellauswahl: ${name}`}
+              >
+                {name}
+              </button>
+            ))}
+          </div>
+        )}
+        </div>
+      </div>
+      
+      <div className={styles['form-footer']}>
+        <div className={styles['arrow-nav']} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+          <button
+            type="button"
+            className={styles['arrow-btn']}
+            aria-label="Zurück"
+            onClick={onCancel}
+            style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}
+          >
+            &#8592;
+          </button>
+          <div style={{ display: 'flex', alignItems: 'center', gap: '16px' }}>
+            <button
+              type="button"
+              onClick={handleSkip}
+              className={styles['quick-pick-btn']}
+              style={{ fontSize: '1.1rem', padding: '12px 20px', borderRadius: 8, background: '#333', color: '#fff', border: 'none', cursor: 'pointer' }}
+            >
+              Überspringen
+            </button>
+            <button
+              type="submit"
+              className={styles['arrow-btn']}
+              aria-label="Weiter"
+              disabled={!player3.trim()}
+              style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer', opacity: !player3.trim() ? 0.5 : 1 }}
+            >
+              &#8594;
+            </button>
+          </div>
+        </div>
+      </div>
+    </form>
+  );
+};
+
+

src/lib/features/new-game/steps/PlayerSelectModal.tsx

@@ -0,0 +1,28 @@
+import { h } from 'preact';
+import modalStyles from '../PlayerSelectModal.module.css';
+
+interface PlayerSelectModalProps {
+  players: string[];
+  onSelect: (player: string) => void;
+  onClose: () => void;
+}
+
+export const PlayerSelectModal = ({ players, onSelect, onClose }: PlayerSelectModalProps) => (
+  <div className={modalStyles.modalOverlay} onClick={onClose}>
+    <div className={modalStyles.modalContent} onClick={e => e.stopPropagation()}>
+      <div className={modalStyles.modalHeader}>
+        <h3>Alle Spieler</h3>
+        <button className={modalStyles.closeButton} onClick={onClose}>×</button>
+      </div>
+      <div className={modalStyles.playerList}>
+        {players.map(player => (
+          <button key={player} className={modalStyles.playerItem} onClick={() => onSelect(player)}>
+            {player}
+          </button>
+        ))}
+      </div>
+    </div>
+  </div>
+);
+
+

src/lib/features/new-game/steps/RaceToStep.tsx

@@ -0,0 +1,115 @@
+import { h } from 'preact';
+import { useEffect, useState } from 'preact/hooks';
+import styles from '../NewGame.module.css';
+import { ProgressIndicator } from '../ProgressIndicator';
+import {
+  RACE_TO_QUICK_PICKS,
+  RACE_TO_DEFAULT,
+  RACE_TO_INFINITY,
+} from '@lib/domain/constants';
+
+interface RaceToStepProps {
+  onNext: (raceTo: string | number) => void;
+  onCancel: () => void;
+  initialValue?: string | number;
+  gameType?: string;
+}
+
+export const RaceToStep = ({ onNext, onCancel, initialValue = '', gameType }: RaceToStepProps) => {
+  const quickPicks = [...RACE_TO_QUICK_PICKS];
+  const defaultValue = RACE_TO_DEFAULT;
+  const [raceTo, setRaceTo] = useState<string | number>(
+    initialValue !== '' ? initialValue : defaultValue
+  );
+
+  useEffect(() => {
+    if (initialValue === '' || initialValue === undefined) {
+      setRaceTo(defaultValue);
+    } else {
+      setRaceTo(initialValue);
+    }
+  }, [defaultValue, initialValue, gameType]);
+
+  const handleQuickPick = (value: number | typeof RACE_TO_INFINITY) => {
+    const selected = value === RACE_TO_INFINITY ? RACE_TO_INFINITY : value;
+    setRaceTo(selected);
+    const raceToValue =
+      selected === RACE_TO_INFINITY ? Infinity : parseInt(String(selected), 10) || 0;
+    onNext(raceToValue);
+  };
+
+  const handleInputChange = (e: Event) => {
+    const target = e.target as HTMLInputElement;
+    setRaceTo(target.value);
+  };
+
+  const handleSubmit = (e: Event) => {
+    e.preventDefault();
+    const raceToValue = raceTo === 'Infinity' ? Infinity : (parseInt(String(raceTo), 10) || 0);
+    onNext(raceToValue);
+  };
+
+  return (
+    <form className={styles['new-game-form']} onSubmit={handleSubmit} aria-label="Race To auswählen">
+      <div className={styles['screen-title']}>Race To auswählen</div>
+      <ProgressIndicator currentStep={5} style={{ marginBottom: 24 }} />
+      <div className={styles['endlos-container']}>
+        <button
+          type="button"
+          className={`${styles['race-to-btn']} ${styles['endlos-btn']} ${
+            raceTo === RACE_TO_INFINITY ? styles.selected : ''
+          }`}
+          onClick={() => handleQuickPick(RACE_TO_INFINITY)}
+        >
+          Endlos
+        </button>
+      </div>
+      <div className={styles['race-to-selection']}>
+        {quickPicks.map(value => (
+          <button
+            key={value}
+            type="button"
+          className={`${styles['race-to-btn']} ${
+            parseInt(String(raceTo), 10) === value ? styles.selected : ''
+          }`}
+          onClick={() => handleQuickPick(value)}
+          >
+            {value}
+          </button>
+        ))}
+      </div>
+      <div className={styles['custom-race-to']}>
+        <input
+          type="number"
+          pattern="[0-9]*"
+          value={raceTo}
+          onInput={handleInputChange}
+          className={styles['name-input']}
+          placeholder="manuelle Eingabe"
+        />
+      </div>
+      <div className={styles['arrow-nav']} style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginTop: 48 }}>
+        <button
+          type="button"
+          className={styles['arrow-btn']}
+          aria-label="Zurück"
+          onClick={onCancel}
+          style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer' }}
+        >
+          &#8592;
+        </button>
+        <button
+          type="submit"
+          className={styles['arrow-btn']}
+          aria-label="Weiter"
+          disabled={String(raceTo).trim() === ''}
+          style={{ fontSize: 48, width: 80, height: 80, borderRadius: '50%', background: '#222', color: '#fff', border: 'none', boxShadow: '0 2px 8px rgba(0,0,0,0.15)', cursor: 'pointer', opacity: String(raceTo).trim() === '' ? 0.5 : 1 }}
+        >
+          &#8594;
+        </button>
+      </div>
+    </form>
+  );
+};
+
+

src/lib/index.ts

@@ -0,0 +1,9 @@
+export * from './domain';
+export * from './data';
+export * from './state';
+export * from './ui';
+export * from './features/game-list';
+export * from './features/game-detail';
+export * from './features/game-lifecycle';
+export * from './features/new-game';
+

src/lib/state/README.md

@@ -0,0 +1,38 @@
+# State Layer (`@lib/state`)
+
+Compose domain + data layers into reusable hooks. Hooks are Preact-friendly but React-compatible thanks to the astro-preact compat flag.
+
+## Hooks
+
+- `useGameState`
+  - Loads/synchronises game collections.
+  - Exposes CRUD ops (`addGame`, `updateGame`, `deleteGame`), filtering helpers, and cached player history.
+  - Handles persistence errors and loading states.
+- `useNavigation`
+  - Simple screen router for the 3 major views (list, new game, detail).
+  - Tracks selected game id.
+- `useNewGameWizard`
+  - Holds transient wizard form state and immutable steps.
+  - Provides `startWizard`, `resetWizard`, `updateGameData`, `nextStep`.
+- `useModal`, `useValidationModal`, `useCompletionModal`
+  - Encapsulate modal visibility state, ensuring consistent APIs across components.
+
+## Usage
+
+```ts
+import { useGameState, useNavigation, useModal } from '@lib/state';
+
+const gameState = useGameState();
+const navigation = useNavigation();
+const modal = useModal();
+
+// gameState.games, navigation.screen, modal.openModal(), ...
+```
+
+## Design Notes
+
+- Hooks avoid direct DOM work—UI components receive ready-to-render props and callbacks.
+- Side effects (storage, logging) are delegated to `@lib/data`.
+- All exports are re-exported via `@lib/state/index.ts`.
+
+

src/lib/state/index.ts

@@ -0,0 +1,8 @@
+export { useGameState } from './useGameState';
+export {
+  useModal,
+  useValidationModal,
+  useCompletionModal,
+} from './useModal';
+export { useNavigation, useNewGameWizard } from './useNavigation';
+

src/lib/state/useGameState.ts

@@ -0,0 +1,121 @@
+import { useState, useEffect, useCallback } from 'preact/hooks';
+import type { Game, NewGameData, GameFilter } from '@lib/domain/types';
+import { GameService } from '@lib/data/gameService';
+
+export function useGameState() {
+  const [games, setGames] = useState<Game[]>([]);
+  const [filter, setFilter] = useState<GameFilter>('all');
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  // Load games from IndexedDB on mount
+  useEffect(() => {
+    const loadGames = async () => {
+      try {
+        setLoading(true);
+        setError(null);
+        const savedGames = await GameService.loadGames();
+        setGames(savedGames);
+      } catch (err) {
+        console.error('Failed to load games:', err);
+        setError('Failed to load games from storage');
+      } finally {
+        setLoading(false);
+      }
+    };
+
+    loadGames();
+  }, []);
+
+  const addGame = useCallback(async (gameData: NewGameData): Promise<number> => {
+    try {
+      const newGame = GameService.createGame(gameData);
+      await GameService.saveGame(newGame);
+      setGames(prevGames => [newGame, ...prevGames]);
+      return newGame.id;
+    } catch (err) {
+      console.error('Failed to add game:', err);
+      setError('Failed to save new game');
+      throw err;
+    }
+  }, []);
+
+  const updateGame = useCallback(async (gameId: number, updatedGame: Game) => {
+    try {
+      await GameService.saveGame(updatedGame);
+      setGames(prevGames => 
+        prevGames.map(game => game.id === gameId ? updatedGame : game)
+      );
+    } catch (err) {
+      console.error('Failed to update game:', err);
+      setError('Failed to save game changes');
+      throw err;
+    }
+  }, []);
+
+  const deleteGame = useCallback(async (gameId: number) => {
+    try {
+      await GameService.deleteGame(gameId);
+      setGames(prevGames => prevGames.filter(game => game.id !== gameId));
+    } catch (err) {
+      console.error('Failed to delete game:', err);
+      setError('Failed to delete game');
+      throw err;
+    }
+  }, []);
+
+  const getGameById = useCallback((gameId: number): Game | undefined => {
+    return games.find(game => game.id === gameId);
+  }, [games]);
+
+  const getFilteredGames = useCallback(async (): Promise<Game[]> => {
+    try {
+      return await GameService.getGamesByFilter(filter);
+    } catch (err) {
+      console.error('Failed to get filtered games:', err);
+      setError('Failed to load filtered games');
+      return games.filter(game => {
+        if (filter === 'active') return game.status === 'active';
+        if (filter === 'completed') return game.status === 'completed';
+        return true;
+      });
+    }
+  }, [filter, games]);
+
+  const getPlayerNameHistory = useCallback((): string[] => {
+    // Extract player names from current games for immediate UI use
+    const nameLastUsed: Record<string, number> = {};
+    
+    games.forEach(game => {
+      const timestamp = new Date(game.updatedAt).getTime();
+      
+      if ('players' in game) {
+        // EndlosGame
+        game.players.forEach(player => {
+          nameLastUsed[player.name] = Math.max(nameLastUsed[player.name] || 0, timestamp);
+        });
+      } else {
+        // StandardGame
+        if (game.player1) nameLastUsed[game.player1] = Math.max(nameLastUsed[game.player1] || 0, timestamp);
+        if (game.player2) nameLastUsed[game.player2] = Math.max(nameLastUsed[game.player2] || 0, timestamp);
+        if (game.player3) nameLastUsed[game.player3] = Math.max(nameLastUsed[game.player3] || 0, timestamp);
+      }
+    });
+
+    return [...new Set(Object.keys(nameLastUsed))].sort((a, b) => nameLastUsed[b] - nameLastUsed[a]);
+  }, [games]);
+
+  return {
+    games,
+    filter,
+    setFilter,
+    loading,
+    error,
+    addGame,
+    updateGame,
+    deleteGame,
+    getGameById,
+    getFilteredGames,
+    getPlayerNameHistory,
+  };
+}

src/lib/state/useModal.ts

@@ -0,0 +1,60 @@
+import { useState, useCallback } from 'preact/hooks';
+import type { ModalState, ValidationState, CompletionModalState } from '@lib/ui/types';
+import type { Game } from '@lib/domain/types';
+
+export function useModal() {
+  const [modal, setModal] = useState<ModalState>({ open: false, gameId: null });
+
+  const openModal = useCallback((gameId?: number) => {
+    setModal({ open: true, gameId });
+  }, []);
+
+  const closeModal = useCallback(() => {
+    setModal({ open: false, gameId: null });
+  }, []);
+
+  return {
+    modal,
+    openModal,
+    closeModal,
+  };
+}
+
+export function useValidationModal() {
+  const [validation, setValidation] = useState<ValidationState>({ open: false, message: '' });
+
+  const showValidation = useCallback((message: string) => {
+    setValidation({ open: true, message });
+  }, []);
+
+  const closeValidation = useCallback(() => {
+    setValidation({ open: false, message: '' });
+  }, []);
+
+  return {
+    validation,
+    showValidation,
+    closeValidation,
+  };
+}
+
+export function useCompletionModal() {
+  const [completionModal, setCompletionModal] = useState<CompletionModalState>({ 
+    open: false, 
+    game: null 
+  });
+
+  const openCompletionModal = useCallback((game: Game) => {
+    setCompletionModal({ open: true, game });
+  }, []);
+
+  const closeCompletionModal = useCallback(() => {
+    setCompletionModal({ open: false, game: null });
+  }, []);
+
+  return {
+    completionModal,
+    openCompletionModal,
+    closeCompletionModal,
+  };
+}

src/lib/state/useNavigation.ts

@@ -0,0 +1,82 @@
+import { useState, useCallback } from 'preact/hooks';
+import type { NewGameStep, NewGameData } from '@lib/domain/types';
+
+type Screen = 'game-list' | 'new-game' | 'game-detail';
+
+export function useNavigation() {
+  const [screen, setScreen] = useState<Screen>('game-list');
+  const [currentGameId, setCurrentGameId] = useState<number | null>(null);
+
+  const showGameList = useCallback(() => {
+    setScreen('game-list');
+    setCurrentGameId(null);
+  }, []);
+
+  const showNewGame = useCallback(() => {
+    setScreen('new-game');
+    setCurrentGameId(null);
+  }, []);
+
+  const showGameDetail = useCallback((gameId: number) => {
+    setCurrentGameId(gameId);
+    setScreen('game-detail');
+  }, []);
+
+  return {
+    screen,
+    currentGameId,
+    showGameList,
+    showNewGame,
+    showGameDetail,
+  };
+}
+
+export function useNewGameWizard() {
+  const [newGameStep, setNewGameStep] = useState<NewGameStep>(null);
+  const [newGameData, setNewGameData] = useState<NewGameData>({
+    player1: '',
+    player2: '',
+    player3: '',
+    gameType: '',
+    raceTo: '',
+  });
+
+  const startWizard = useCallback(() => {
+    setNewGameStep('player1');
+    setNewGameData({
+      player1: '',
+      player2: '',
+      player3: '',
+      gameType: '',
+      raceTo: '',
+    });
+  }, []);
+
+  const resetWizard = useCallback(() => {
+    setNewGameStep(null);
+    setNewGameData({
+      player1: '',
+      player2: '',
+      player3: '',
+      gameType: '',
+      raceTo: '',
+    });
+  }, []);
+
+  const updateGameData = useCallback((data: Partial<NewGameData>) => {
+    setNewGameData(prev => ({ ...prev, ...data }));
+  }, []);
+
+  const nextStep = useCallback((step: NewGameStep) => {
+    setNewGameStep(step);
+  }, []);
+
+  return {
+    newGameStep,
+    newGameData,
+    startWizard,
+    resetWizard,
+    updateGameData,
+    nextStep,
+  };
+}

src/lib/ui/Button.module.css

@@ -0,0 +1,134 @@
+/* Use CSS custom properties from global design system */
+.button {
+  border: none;
+  border-radius: var(--radius-md);
+  cursor: pointer;
+  font-weight: 600;
+  transition: var(--transition-base);
+  touch-action: manipulation;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  gap: var(--space-sm);
+  text-decoration: none;
+  user-select: none;
+  font-family: inherit;
+  position: relative;
+  overflow: hidden;
+}
+
+.button::before {
+  content: '';
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
+  transform: translateX(-100%);
+  transition: transform 0.3s ease;
+}
+
+.button:hover::before {
+  transform: translateX(100%);
+}
+
+.button:focus-visible {
+  outline: 2px solid var(--color-primary);
+  outline-offset: 2px;
+}
+
+.button:active {
+  transform: translateY(1px);
+}
+
+/* Variants */
+.primary {
+  background: var(--color-primary);
+  color: white;
+  box-shadow: var(--shadow-md);
+}
+
+.primary:hover:not(.disabled) {
+  background: var(--color-primary-hover);
+  box-shadow: var(--shadow-lg);
+  transform: translateY(-1px);
+}
+
+.secondary {
+  background: var(--color-secondary);
+  color: var(--color-text);
+  box-shadow: var(--shadow-sm);
+}
+
+.secondary:hover:not(.disabled) {
+  background: var(--color-secondary-hover);
+  box-shadow: var(--shadow-md);
+  transform: translateY(-1px);
+}
+
+.danger {
+  background: var(--color-danger);
+  color: white;
+  box-shadow: var(--shadow-md);
+}
+
+.danger:hover:not(.disabled) {
+  background: #ef5350;
+  box-shadow: var(--shadow-lg);
+  transform: translateY(-1px);
+}
+
+/* Sizes with improved touch targets for tablets */
+.small {
+  padding: var(--space-sm) var(--space-md);
+  font-size: var(--font-size-sm);
+  min-height: var(--touch-target-min);
+  border-radius: var(--radius-sm);
+}
+
+.medium {
+  padding: var(--space-md) var(--space-lg);
+  font-size: var(--font-size-base);
+  min-height: var(--touch-target-comfortable);
+  border-radius: var(--radius-md);
+}
+
+.large {
+  padding: var(--space-lg) var(--space-xl);
+  font-size: var(--font-size-lg);
+  min-height: 56px;
+  border-radius: var(--radius-lg);
+}
+
+/* Tablet-specific size adjustments */
+@media (min-width: 768px) and (max-width: 1024px) {
+  .small {
+    min-height: var(--touch-target-comfortable);
+    padding: var(--space-md) var(--space-lg);
+    font-size: var(--font-size-base);
+  }
+  
+  .medium {
+    min-height: var(--touch-target-comfortable);
+    padding: var(--space-lg) var(--space-xl);
+    font-size: var(--font-size-lg);
+  }
+  
+  .large {
+    min-height: 64px;
+    padding: var(--space-xl) var(--space-xxl);
+    font-size: var(--font-size-xl);
+  }
+}
+
+/* States */
+.disabled {
+  opacity: 0.5;
+  cursor: not-allowed;
+  transform: none !important;
+}
+
+.disabled:hover::before {
+  transform: translateX(-100%);
+}

src/lib/ui/Button.tsx

@@ -0,0 +1,32 @@
+import { h } from 'preact';
+import type { ButtonProps } from '@lib/ui/types';
+import styles from './Button.module.css';
+
+export function Button({ 
+  variant = 'secondary', 
+  size = 'medium', 
+  disabled = false, 
+  children, 
+  onClick,
+  'aria-label': ariaLabel,
+  ...rest 
+}: ButtonProps) {
+  const classNames = [
+    styles.button,
+    styles[variant],
+    styles[size],
+    disabled && styles.disabled,
+  ].filter(Boolean).join(' ');
+
+  return (
+    <button
+      className={classNames}
+      onClick={onClick}
+      disabled={disabled}
+      aria-label={ariaLabel}
+      {...rest}
+    >
+      {children}
+    </button>
+  );
+}

src/lib/ui/Card.module.css

@@ -0,0 +1,53 @@
+.card {
+  border-radius: var(--border-radius);
+  transition: var(--transition);
+}
+
+.default {
+  background: rgba(255, 255, 255, 0.05);
+  border: 1px solid rgba(255, 255, 255, 0.1);
+}
+
+.elevated {
+  background: rgba(255, 255, 255, 0.08);
+  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
+}
+
+.outlined {
+  background: transparent;
+  border: 2px solid rgba(255, 255, 255, 0.2);
+}
+
+.clickable {
+  cursor: pointer;
+  border: none;
+  text-align: left;
+  width: 100%;
+}
+
+.clickable:hover {
+  background: rgba(255, 255, 255, 0.1);
+  transform: translateY(-1px);
+}
+
+.clickable:focus-visible {
+  outline: 2px solid var(--color-primary);
+  outline-offset: 2px;
+}
+
+/* Padding variants */
+.padding-none {
+  padding: 0;
+}
+
+.padding-small {
+  padding: 8px;
+}
+
+.padding-medium {
+  padding: 16px;
+}
+
+.padding-large {
+  padding: 24px;
+}

src/lib/ui/Card.tsx

@@ -0,0 +1,34 @@
+import { h } from 'preact';
+import styles from './Card.module.css';
+
+interface CardProps {
+  children: any;
+  variant?: 'default' | 'elevated' | 'outlined';
+  padding?: 'none' | 'small' | 'medium' | 'large';
+  className?: string;
+  onClick?: () => void;
+}
+
+export function Card({ 
+  children, 
+  variant = 'default', 
+  padding = 'medium',
+  className = '',
+  onClick 
+}: CardProps) {
+  const classNames = [
+    styles.card,
+    styles[variant],
+    styles[`padding-${padding}`],
+    onClick && styles.clickable,
+    className,
+  ].filter(Boolean).join(' ');
+
+  const Component = onClick ? 'button' : 'div';
+
+  return (
+    <Component className={classNames} onClick={onClick}>
+      {children}
+    </Component>
+  );
+}

src/lib/ui/Layout.module.css

@@ -0,0 +1,51 @@
+.layout {
+  height: 100vh;
+  overflow: hidden;
+  background-color: var(--color-background);
+  color: var(--color-text);
+  display: flex;
+  flex-direction: column;
+}
+
+.content {
+  flex: 1;
+  max-width: 1200px;
+  margin: 0 auto;
+  padding: var(--space-md);
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  min-height: 0;
+}
+
+.screen {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  min-height: 0;
+}
+
+/* Tablet optimizations */
+@media (min-width: 768px) and (max-width: 1024px) {
+  .content {
+    padding: var(--space-lg) var(--space-xl);
+    max-width: 900px;
+  }
+}
+
+/* Large tablet and small desktop */
+@media (min-width: 1025px) {
+  .content {
+    padding: var(--space-xl);
+  }
+}
+
+/* Mobile adjustments */
+@media (max-width: 767px) {
+  .content {
+    padding: var(--space-sm) var(--space-md);
+  }
+}