feat(storage): migrate to IndexedDB with localStorage fallback and async app flow

- Add IndexedDB service with schema, indexes, and player stats
- Migrate GameService to async IndexedDB and auto-migrate from localStorage
- Update hooks and App handlers to async; add error handling and UX feedback
- Convert remaining JSX components to TSX
- Add test utility for IndexedDB and migration checks
- Extend game types with sync fields for future online sync

.gitea

@@ -1 +1 @@
-@https://gitea.schwenk.online/froxxxy/bscscore/issues/1
+https://gitea.schwenk.online/froxxxy/bscscore/issues/26

.gitignore

@@ -24,4 +24,4 @@ pnpm-debug.log*
 .idea/
 
 .gitea
-dev/
+dev/.gitea

README.md

@@ -1,80 +1,219 @@
-# 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
+This project has been refactored following modern software development best practices:
-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
+### **Separation of Concerns**
+- **Services Layer**: Game data management and localStorage operations
+- **Custom Hooks**: Reusable state management logic
+- **Components**: UI components with single responsibilities
+- **Utils**: Pure utility functions for common operations
 
-The application is built using:
+### **Type Safety**
-- Vanilla JavaScript (ES6+)
+- Full TypeScript implementation
-- HTML5
+- Comprehensive type definitions for game domain
-- CSS3
+- Type-safe component props and state management
-- LocalStorage for data persistence
 
-No build process or dependencies required. Simply clone the repository and open `index.html` in a web browser.
+### **Component Architecture**
+```
+src/
+├── components/
+│   ├── ui/           # Reusable UI components (Button, Card, Layout)
+│   ├── screens/      # Screen-level components
+│   └── ...           # Feature-specific components
+├── hooks/            # Custom React/Preact hooks
+├── services/         # Business logic and data management
+├── types/            # TypeScript type definitions
+├── utils/            # Pure utility functions
+└── styles/           # Global styles and CSS modules
+```
 
-## Project Structure
+### **State Management**
+- **useGameState**: Centralized game data management
+- **useNavigation**: Screen and routing state
+- **useModal**: Modal state management
+- **Custom hooks**: Encapsulated, reusable state logic
 
-The project consists of the following key files:
+### **Design System**
-- `index.html`: Main application file containing HTML, CSS, and JavaScript
+- Consistent design tokens and CSS custom properties
-- `README.md`: Project documentation and setup instructions
+- Reusable UI components with variant support
-- `LICENSE`: GNU GPLv3 license text
+- Responsive design patterns
-- `TODO.md`: Roadmap and planned features
+- Accessibility-first approach
 
-## Features in Detail
+## 🚀 Getting Started
 
-### Core Features
+### Prerequisites
-- Score tracking for multiple billiards game types
+- Node.js 18+ 
-- Player name history with quick selection
+- npm or yarn
-- Game status management (active/completed)
-- Local storage for offline functionality
-- Mobile-optimized interface
 
-### User Interface
+### Installation
-- Dark theme design
+```bash
-- Touch-friendly controls
+# Clone the repository
-- Responsive layout
+git clone <repository-url>
-- Game type selection
+cd bscscore
-- Player name management
 
-### Data Management
+# Install dependencies
-- Local storage persistence
+npm install
-- Game history tracking
-- Player name history
-- Status filtering
 
-## Contributing
+# Start development server
+npm run dev
+```
 
-1. Fork the repository
+### Available Scripts
-2. Create your feature branch (`git checkout -b feature/AmazingFeature`)
+```bash
-3. Commit your changes (`git commit -m 'Add some AmazingFeature'`)
+npm run dev      # Start development server
-4. Push to the branch (`git push origin feature/AmazingFeature`)
+npm run build    # Build for production
-5. Open a Pull Request
+npm run preview  # Preview production build
+```
 
-## Roadmap
+## 📁 Project Structure
 
-See [TODO.md](TODO.md) for a list of proposed features and known issues.
+### **Core Components**
+- `App.tsx` - Main application component with orchestrated state management
+- `screens/` - Screen-level components (GameList, NewGame, GameDetail)
+- `ui/` - Reusable UI components following design system
 
-## License
+### **State Management**
+- `hooks/useGameState.ts` - Game CRUD operations and persistence
+- `hooks/useNavigation.ts` - Application routing and screen state
+- `hooks/useModal.ts` - Modal state management
 
-This project is licensed under the GNU General Public License v3.0 - see the [LICENSE](LICENSE) file for details.
+### **Business Logic**
+- `services/gameService.ts` - Game creation, updates, and business rules
+- `utils/gameUtils.ts` - Game-related utility functions
+- `utils/validation.ts` - Input validation and sanitization
+
+### **Type Definitions**
+- `types/game.ts` - Game domain types
+- `types/ui.ts` - 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 with Vitest
+- E2E testing with Playwright
+- 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]

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

@@ -1,9 +1,41 @@
 // @ts-check
 import { defineConfig } from 'astro/config';
-
 import preact from '@astrojs/preact';
 
 // https://astro.build/config
 export default defineConfig({
-  integrations: [preact()]
+  integrations: [
+    preact({
+      compat: true, // Enable React compatibility for better ecosystem support
+    })
+  ],
+  
+  // Build optimizations
+  build: {
+    inlineStylesheets: 'auto',
+  },
+  
+  // Vite configuration for development
+  vite: {
+    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,
 });

package-lock.json

@@ -11,6 +11,9 @@
         "@astrojs/preact": "^4.1.0",
         "astro": "^5.9.0",
         "preact": "^10.26.8"
+      },
+      "devDependencies": {
+        "@types/node": "^24.0.3"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -1831,12 +1834,12 @@
       }
     },
     "node_modules/@types/node": {
-      "version": "22.15.29",
+      "version": "24.0.3",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-22.15.29.tgz",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.0.3.tgz",
-      "integrity": "sha512-LNdjOkUDlU1RZb8e1kOIUpN1qQUlzGkEtbVNo53vbrwDg5om6oduhm4SiUaPW5ASTXhAiP0jInWG8Qx9fVlOeQ==",
+      "integrity": "sha512-R4I/kzCYAdRLzfiCabn9hxWfbuHS573x+r0dJMkkzThEa7pbrcDWK+9zu3e7aBOouf+rQAciqPFMnxwr0aWgKg==",
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~6.21.0"
+        "undici-types": "~7.8.0"
       }
     },
     "node_modules/@types/unist": {
@@ -5098,9 +5101,9 @@
       "license": "MIT"
     },
     "node_modules/undici-types": {
-      "version": "6.21.0",
+      "version": "7.8.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.8.0.tgz",
-      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
+      "integrity": "sha512-9UJ2xGDvQ43tYyVMpuHlsgApydB8ZKfVYTsLDhXkFL/6gfkp+U8xTGdh8pMJv1SpZna0zxG1DwsKZsreLbXBxw==",
       "license": "MIT"
     },
     "node_modules/unicode-properties": {

package.json

@@ -12,5 +12,8 @@
     "@astrojs/preact": "^4.1.0",
     "astro": "^5.9.0",
     "preact": "^10.26.8"
+  },
+  "devDependencies": {
+    "@types/node": "^24.0.3"
   }
 }

src/components/App.jsx

@@ -1,204 +0,0 @@
-import { h } from 'preact';
-import { useState, useEffect, useCallback } from 'preact/hooks';
-import GameList from './GameList.jsx';
-import GameDetail from './GameDetail.jsx';
-import NewGame from './NewGame.jsx';
-import Modal from './Modal.jsx';
-import ValidationModal from './ValidationModal.jsx';
-import GameCompletionModal from './GameCompletionModal.jsx';
-import FullscreenToggle from './FullscreenToggle.jsx';
-
-const LOCAL_STORAGE_KEY = 'bscscore_games';
-
-/**
- * Main App component for BSC Score
- * @returns {import('preact').VNode}
- */
-const App = () => {
-  const [games, setGames] = useState([]);
-  const [currentGameId, setCurrentGameId] = useState(null);
-  const [playerNameHistory, setPlayerNameHistory] = useState([]);
-  const [screen, setScreen] = useState('game-list');
-  const [modal, setModal] = useState({ open: false, gameId: null });
-  const [validation, setValidation] = useState({ open: false, message: '' });
-  const [completionModal, setCompletionModal] = useState({ open: false, game: null });
-  const [filter, setFilter] = useState('all');
-
-  // Load games from localStorage on mount
-  useEffect(() => {
-    const savedGames = localStorage.getItem(LOCAL_STORAGE_KEY);
-    if (savedGames) {
-      setGames(JSON.parse(savedGames));
-    }
-  }, []);
-
-  // Save games to localStorage whenever games change
-  useEffect(() => {
-    localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(games));
-    // Update player name history
-    const nameLastUsed = {};
-    games.forEach(game => {
-      if (game.player1) nameLastUsed[game.player1] = Math.max(nameLastUsed[game.player1] || 0, new Date(game.updatedAt).getTime());
-      if (game.player2) nameLastUsed[game.player2] = Math.max(nameLastUsed[game.player2] || 0, new Date(game.updatedAt).getTime());
-      if (game.player3) nameLastUsed[game.player3] = Math.max(nameLastUsed[game.player3] || 0, new Date(game.updatedAt).getTime());
-    });
-    setPlayerNameHistory(
-      [...new Set(Object.keys(nameLastUsed))].sort((a, b) => nameLastUsed[b] - nameLastUsed[a])
-    );
-  }, [games]);
-
-  // Navigation handlers
-  const showGameList = useCallback(() => {
-    setScreen('game-list');
-    setCurrentGameId(null);
-  }, []);
-  const showNewGame = useCallback(() => {
-    setScreen('new-game');
-    setCurrentGameId(null);
-  }, []);
-  const showGameDetail = useCallback((id) => {
-    setCurrentGameId(id);
-    setScreen('game-detail');
-  }, []);
-
-  // Game creation
-  const handleCreateGame = useCallback(({ player1, player2, player3, gameType, raceTo }) => {
-    const newGame = {
-      id: Date.now(),
-      player1,
-      player2,
-      player3,
-      score1: 0,
-      score2: 0,
-      score3: 0,
-      gameType,
-      raceTo,
-      status: 'active',
-      createdAt: new Date().toISOString(),
-      updatedAt: new Date().toISOString()
-    };
-    setGames(g => [newGame, ...g]);
-    return newGame.id;
-  }, []);
-
-  // Score update
-  const handleUpdateScore = useCallback((player, change) => {
-    setGames(games => games.map(game => {
-      if (game.id !== currentGameId || game.status === 'completed') return game;
-      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 = Math.max(0, updated.score3 + change);
-      updated.updatedAt = new Date().toISOString();
-      // Check for raceTo completion
-      if (updated.raceTo && (updated.score1 >= updated.raceTo || updated.score2 >= updated.raceTo || (updated.player3 && updated.score3 >= updated.raceTo))) {
-        setCompletionModal({ open: true, game: updated });
-      }
-      return updated;
-    }));
-  }, [currentGameId]);
-
-  // Finish game
-  const handleFinishGame = useCallback(() => {
-    const game = games.find(g => g.id === currentGameId);
-    if (!game) return;
-    setCompletionModal({ open: true, game });
-  }, [games, currentGameId]);
-  const handleConfirmCompletion = useCallback(() => {
-    setGames(games => games.map(game => {
-      if (game.id !== currentGameId) return game;
-      return { ...game, status: 'completed', updatedAt: new Date().toISOString() };
-    }));
-    setCompletionModal({ open: false, game: null });
-    setScreen('game-detail');
-  }, [currentGameId]);
-
-  // Delete game
-  const handleDeleteGame = useCallback((id) => {
-    setModal({ open: true, gameId: id });
-  }, []);
-  const handleConfirmDelete = useCallback(() => {
-    setGames(games => games.filter(g => g.id !== modal.gameId));
-    setModal({ open: false, gameId: null });
-    setScreen('game-list');
-  }, [modal.gameId]);
-  const handleCancelDelete = useCallback(() => {
-    setModal({ open: false, gameId: null });
-  }, []);
-
-  // Validation modal
-  const showValidation = useCallback((message) => {
-    setValidation({ open: true, message });
-  }, []);
-  const closeValidation = useCallback(() => {
-    setValidation({ open: false, message: '' });
-  }, []);
-
-  return (
-    <div className="screen-container">
-      {screen === 'game-list' && (
-        <div className="screen active">
-          <div className="screen-content">
-            <button className="nav-button new-game-button" onClick={showNewGame} aria-label="Neues Spiel starten">Neues Spiel</button>
-            <GameList
-              games={games}
-              filter={filter}
-              onShowGameDetail={showGameDetail}
-              onDeleteGame={handleDeleteGame}
-              setFilter={setFilter}
-            />
-          </div>
-        </div>
-      )}
-      {screen === 'new-game' && (
-        <div className="screen active">
-          <div className="screen-content">
-            <NewGame
-              onCreateGame={handleCreateGame}
-              playerNameHistory={playerNameHistory}
-              onCancel={showGameList}
-              onGameCreated={id => {
-                setCurrentGameId(id);
-                setScreen('game-detail');
-              }}
-              initialValues={games[0]}
-            />
-          </div>
-        </div>
-      )}
-      {screen === 'game-detail' && (
-        <div className="screen active">
-          <div className="screen-content">
-            <GameDetail
-              game={games.find(g => g.id === currentGameId)}
-              onFinishGame={handleFinishGame}
-              onUpdateScore={handleUpdateScore}
-              onBack={showGameList}
-            />
-          </div>
-        </div>
-      )}
-      <Modal
-        open={modal.open}
-        title="Spiel löschen"
-        message="Möchten Sie das Spiel wirklich löschen?"
-        onCancel={handleCancelDelete}
-        onConfirm={handleConfirmDelete}
-      />
-      <ValidationModal
-        open={validation.open}
-        message={validation.message}
-        onClose={closeValidation}
-      />
-      <GameCompletionModal
-        open={completionModal.open}
-        game={completionModal.game}
-        onConfirm={handleConfirmCompletion}
-        onClose={() => setCompletionModal({ open: false, game: null })}
-      />
-      <FullscreenToggle />
-    </div>
-  );
-};
-
-export default App; 

src/components/App.tsx

@@ -0,0 +1,275 @@
+import { h } from 'preact';
+import { useEffect, useCallback } from 'preact/hooks';
+
+import { useGameState } from '../hooks/useGameState';
+import { useNavigation, useNewGameWizard } from '../hooks/useNavigation';
+import { useModal, useValidationModal, useCompletionModal } from '../hooks/useModal';
+
+import { GameService } from '../services/gameService';
+import type { StandardGame, Game, EndlosGame } from '../types/game';
+
+import { Layout } from './ui/Layout';
+import GameListScreen from './screens/GameListScreen';
+import NewGameScreen from './screens/NewGameScreen';
+import GameDetailScreen from './screens/GameDetailScreen';
+import Modal from './Modal';
+import ValidationModal from './ValidationModal';
+import GameCompletionModal from './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 +1,33 @@
+---
+// 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 {
+    min-height: 100vh;
+    width: 100%;
+  }
+  
+  /* 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/GameCompletionModal.module.css

@@ -26,17 +26,68 @@
 .winner-announcement {
     text-align: center;
     margin: 20px 0 0 0;
-    padding: 18px 8px;
+    padding: 24px 16px;
-    background: #43a047;
+    background: linear-gradient(135deg, #ff9800 0%, #ffa726 100%);
-    border-radius: 8px;
+    border-radius: 16px;
     font-size: 1.2rem;
-    color: #fff;
+    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: hidden;
 }
+
+.winner-announcement::before {
+    content: '🎉';
+    position: absolute;
+    top: -10px;
+    left: 20px;
+    font-size: 24px;
+    animation: bounce 1s ease-in-out infinite;
+}
+
+.winner-announcement::after {
+    content: '🏆';
+    position: absolute;
+    top: -10px;
+    right: 20px;
+    font-size: 24px;
+    animation: bounce 1s ease-in-out infinite 0.5s;
+}
+
 .winner-announcement h3 {
-    font-size: 1.2rem;
     margin: 0;
-    color: #fff;
+    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;
@@ -65,3 +116,45 @@
         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/components/GameCompletionModal.tsx

@@ -1,26 +1,36 @@
 import { h } from 'preact';
 import modalStyles from './Modal.module.css';
 import styles from './GameCompletionModal.module.css';
+import type { Game } from '../types/game';
+
+interface GameCompletionModalProps {
+  open: boolean;
+  game: Game | null;
+  onConfirm: () => void;
+  onClose: () => void;
+  onRematch: () => void;
+}
 
 /**
  * Modal shown when a game is completed.
- * @param {object} props
- * @param {boolean} props.open
- * @param {object} props.game
- * @param {Function} props.onConfirm
- * @param {Function} props.onClose
- * @returns {import('preact').VNode|null}
  */
-const GameCompletionModal = ({ open, game, onConfirm, onClose }) => {
+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]);
-  const maxScore = Math.max(...scores);
+  let maxScore, winners, winnerText;
-  // Find all winners (could be a tie)
+
-  const winners = playerNames.filter((name, idx) => scores[idx] === maxScore);
+  if (game.forfeitedBy) {
-  const winnerText = winners.length > 1
+    winnerText = `${game.winner} hat gewonnen, da ${game.forfeitedBy} aufgegeben hat.`;
-    ? `Unentschieden zwischen ${winners.join(' und ')}`
+  } else {
-    : `${winners[0]} hat gewonnen!`;
+    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']}>
@@ -38,9 +48,11 @@ const GameCompletionModal = ({ open, game, onConfirm, onClose }) => {
             ))}
           </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>

src/components/GameDetail.jsx

@@ -1,55 +0,0 @@
-import { h } from 'preact';
-import styles from './GameDetail.module.css';
-
-/**
- * Game detail view for a single game.
- * @param {object} props
- * @param {object} props.game
- * @param {Function} props.onFinishGame
- * @param {Function} props.onUpdateScore
- * @param {Function} props.onBack
- * @returns {import('preact').VNode|null}
- */
-const GameDetail = ({ game, onFinishGame, onUpdateScore, onBack }) => {
-  if (!game) return null;
-  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 ${game.raceTo}` : ''}
-      </div>
-      <div className={styles['scores-container']}>
-        {playerNames.map((name, idx) => (
-          <div
-            className={styles['player-score'] + (name === 'Fränky' ? ' ' + styles['franky'] : '')}
-            key={name + idx}
-          >
-            <span className={styles['player-name']}>{name}</span>
-            <span className={styles['score']} id={`score${idx+1}`}>{scores[idx]}</span>
-            <button
-              className={styles['score-button']}
-              disabled={isCompleted}
-              onClick={() => onUpdateScore(idx+1, -1)}
-              aria-label={`Punkt abziehen für ${name}`}
-            >-</button>
-            <button
-              className={styles['score-button']}
-              disabled={isCompleted}
-              onClick={() => onUpdateScore(idx+1, 1)}
-              aria-label={`Punkt hinzufügen für ${name}`}
-            >+</button>
-          </div>
-        ))}
-      </div>
-      <div className={styles['game-detail-controls']}>
-        <button className="btn" onClick={onBack} aria-label="Zurück zur Liste">Zurück zur Liste</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/GameDetail.module.css

@@ -44,12 +44,20 @@
 .player-score {
     flex: 1;
     text-align: center;
-    padding: 20px;
+    padding: 30px 20px;
-    border-radius: 16px;
+    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;
@@ -61,21 +69,69 @@
     background-color: #333;
 }
 .player-name {
-    font-size: 24px;
+    font-size: 28px;
-    margin-bottom: 10px;
+    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: 16vh;
+    font-size: 20vh;
-    font-weight: bold;
+    font-weight: 900;
-    margin: 10px 0 20px 0;
+    margin: 20px 0 30px 0;
     line-height: 1;
     color: #fff;
-    text-shadow: 0 2px 8px rgba(0,0,0,0.4);
+    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;
@@ -84,16 +140,42 @@
     margin-top: auto;
 }
 .score-button {
-    background-color: #333;
+    background: linear-gradient(135deg, #ff9800 0%, #ffa726 100%);
-    color: white;
+    color: #222;
     border: none;
-    border-radius: 5px;
+    border-radius: 50%;
-    padding: 10px 20px;
+    padding: 0;
-    font-size: 18px;
+    font-size: 2.5rem;
+    font-weight: 900;
     cursor: pointer;
-    transition: background-color 0.2s;
+    transition: all 0.3s ease;
-    min-width: 80px;
+    width: 80px;
-    margin-bottom: 8px;
+    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;
@@ -123,3 +205,252 @@
     width: 100%;
     justify-content: center;
 }
+.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/components/GameDetail.tsx

@@ -0,0 +1,130 @@
+import { h } from 'preact';
+import { useState } from 'preact/hooks';
+import styles from './GameDetail.module.css';
+import Toast from './Toast';
+import type { Game, EndlosGame } from '../types/game';
+
+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) => {
+  const [toast, setToast] = useState<{ show: boolean; message: string; type: 'success' | 'error' | 'info' }>({ 
+    show: false, 
+    message: '', 
+    type: 'info' 
+  });
+
+  if (!game) return null;
+
+  const showToast = (message: string, type: 'success' | 'error' | 'info' = 'info') => {
+    setToast({ show: true, message, type });
+  };
+
+  const handleScoreUpdate = (playerIndex: number, change: number) => {
+    onUpdateScore(playerIndex, change);
+    const playerName = [game.player1, game.player2, game.player3][playerIndex - 1];
+    const action = change > 0 ? 'Punkt hinzugefügt' : 'Punkt abgezogen';
+    showToast(`${action} für ${playerName}`, 'success');
+  };
+
+
+  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 ${game.raceTo}` : ''}
+      </div>
+      <div className={styles['scores-container']}>
+        {playerNames.map((name, idx) => {
+          const currentScore = scores[idx];
+          const progressPercentage = game.raceTo ? Math.min((currentScore / game.raceTo) * 100, 100) : 0;
+          
+          return (
+            <div
+              className={styles['player-score'] + (name === 'Fränky' ? ' ' + styles['franky'] : '')}
+              key={name + idx}
+            >
+              <span className={styles['player-name']}>{name}</span>
+              <div className={styles['progress-bar']}>
+                <div 
+                  className={styles['progress-fill']} 
+                  style={{ width: `${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>
+              <div className={styles['score-buttons']}>
+                <button
+                  className={styles['score-button']}
+                  disabled={isCompleted}
+                  onClick={() => handleScoreUpdate(idx+1, -1)}
+                  aria-label={`Punkt abziehen für ${name}`}
+                  title={`Punkt abziehen für ${name}`}
+                >-</button>
+                <button
+                  className={styles['score-button']}
+                  disabled={isCompleted}
+                  onClick={() => handleScoreUpdate(idx+1, 1)}
+                  aria-label={`Punkt hinzufügen für ${name}`}
+                  title={`Punkt hinzufügen für ${name}`}
+                >+</button>
+              </div>
+            </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();
+              showToast('Letzte Aktion rückgängig gemacht', 'info');
+            }}
+            aria-label="Rückgängig"
+          >
+            ↶ Rückgängig
+          </button>
+        )}
+        <button className="btn" disabled={isCompleted} onClick={onFinishGame} aria-label={isCompleted ? 'Abgeschlossen' : 'Spiel beenden'}>{isCompleted ? 'Abgeschlossen' : 'Spiel beenden'}</button>
+      </div>
+      <Toast 
+        show={toast.show} 
+        message={toast.message} 
+        type={toast.type} 
+        onClose={() => setToast({ show: false, message: '', type: 'info' })} 
+      />
+    </div>
+  );
+};
+
+export default GameDetail; 

src/components/GameList.jsx

@@ -1,62 +0,0 @@
-import { h } from 'preact';
-import styles from './GameList.module.css';
-
-/**
- * List of games with filter and delete options.
- * @param {object} props
- * @param {object[]} props.games
- * @param {string} props.filter
- * @param {Function} props.setFilter
- * @param {Function} props.onShowGameDetail
- * @param {Function} props.onDeleteGame
- * @returns {import('preact').VNode}
- */
-const GameList = ({ games, filter = 'all', setFilter, onShowGameDetail, onDeleteGame }) => {
-  // Filter and sort games
-  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) - new Date(a.createdAt));
-
-  return (
-    <div className={styles['game-list'] + ' ' + styles['games-container']}>
-      <div className={styles['filter-buttons']}>
-        <button className={styles['filter-button'] + (filter === 'all' ? ' ' + styles['active'] : '')} onClick={() => setFilter('all')} aria-label="Alle Spiele anzeigen">Alle</button>
-        <button className={styles['filter-button'] + (filter === 'active' ? ' ' + styles['active'] : '')} onClick={() => setFilter('active')} aria-label="Nur aktive Spiele anzeigen">Aktiv</button>
-        <button className={styles['filter-button'] + (filter === 'completed' ? ' ' + styles['active'] : '')} onClick={() => setFilter('completed')} aria-label="Nur abgeschlossene Spiele anzeigen">Abgeschlossen</button>
-      </div>
-      {filteredGames.length === 0 ? (
-        <div className={styles['empty-state']}>Keine Spiele vorhanden</div>
-      ) : (
-        filteredGames.map(game => {
-          const playerNames = game.player3
-            ? `${game.player1} vs ${game.player2} vs ${game.player3}`
-            : `${game.player1} vs ${game.player2}`;
-          const scores = game.player3
-            ? `${game.score1} - ${game.score2} - ${game.score3}`
-            : `${game.score1} - ${game.score2}`;
-          return (
-            <div
-              className={
-                styles['game-item'] + ' ' + (game.status === 'completed' ? styles['completed'] : styles['active'])
-              }
-              key={game.id}
-            >
-              <div className={styles['game-info']} onClick={() => onShowGameDetail(game.id)} role="button" tabIndex={0} aria-label={`Details für Spiel ${playerNames}`}>
-                <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>
-              <button className={styles['delete-button']} onClick={() => onDeleteGame(game.id)} aria-label={`Spiel löschen: ${playerNames}`}></button>
-            </div>
-          );
-        })
-      )}
-    </div>
-  );
-};
-
-export default GameList; 

src/components/GameList.module.css

@@ -1,135 +1,277 @@
-/* GameList-specific styles only. Shared utility classes are now in global CSS. */
+/* 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: 20px;
+    padding: var(--space-lg);
     overflow-y: auto;
     -webkit-overflow-scrolling: touch;
 }
+
 .screen-title {
-    font-size: 24px;
+    font-size: var(--font-size-xxl);
-    margin-bottom: 20px;
+    margin-bottom: var(--space-lg);
+    font-weight: 700;
 }
+
 .game-list {
     width: 100%;
     flex: 1;
     overflow-y: auto;
 }
+
+/* Filter buttons with improved symmetry */
 .filter-buttons {
-    display: flex;
+    display: grid;
-    gap: 8px;
+    grid-template-columns: repeat(3, 1fr);
-    margin: 24px 0 16px 0;
+    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);
 }
+
 .filter-button {
-    flex: 1;
+    background: var(--color-secondary);
-    background: #333;
+    color: var(--color-text);
-    color: #fff;
     border: none;
-    border-radius: 0;
+    font-size: var(--font-size-base);
-    font-size: 1.2rem;
+    padding: var(--space-md) 0;
-    padding: 18px 0;
     cursor: pointer;
     font-weight: 500;
-    transition: background 0.2s, color 0.2s;
+    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: #4CAF50;
+    background: var(--color-primary);
-    color: #fff;
+    color: white;
+    box-shadow: var(--shadow-md);
 }
+
+/* Games container with improved spacing */
 .games-container {
-  width: 100%;
+    width: 100%;
-  display: flex;
+    display: flex;
-  flex-direction: column;
+    flex-direction: column;
-  gap: 16px;
+    gap: var(--space-md);
-  margin-top: 24px;
+    margin-top: var(--space-lg);
 }
+
+/* Game item with better symmetry and spacing */
 .game-item {
-  display: flex;
+    display: grid;
-  align-items: center;
+    grid-template-columns: auto 1fr auto;
-  justify-content: space-between;
+    align-items: center;
-  padding: 1.5rem;
+    gap: var(--space-md);
-  border-radius: 0.5rem;
+    padding: var(--space-lg);
-  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+    border-radius: var(--radius-lg);
-  transition: transform 0.1s ease, background-color 0.2s ease;
+    box-shadow: var(--shadow-sm);
-  cursor: pointer;
+    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: #1e4620;
+    background: var(--color-success);
+    border-color: var(--color-success);
 }
+
 .game-item.completed {
-  background: #333;
+    background: var(--color-surface);
-  opacity: 0.85;
+    opacity: 0.8;
+    border-color: var(--color-border);
 }
+
+/* Game info with improved layout */
 .game-info {
-  flex: 1;
+    display: grid;
-  display: flex;
+    grid-template-columns: auto 1fr auto;
-  align-items: center;
+    align-items: center;
-  gap: 2rem;
+    gap: var(--space-lg);
+    width: 100%;
+    cursor: pointer;
 }
+
 .game-type {
-  font-weight: bold;
+    font-weight: 700;
-  font-size: 1.5rem;
+    font-size: var(--font-size-lg);
-  min-width: 8rem;
+    color: var(--color-text);
-  color: #fff;
+    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: #fff;
+    color: var(--color-text);
-  font-size: 1.5rem;
+    font-size: var(--font-size-lg);
-  min-width: 16rem;
+    font-weight: 500;
+    text-align: center;
+    flex: 1;
 }
+
 .game-scores {
-  font-size: 2rem;
+    font-size: var(--font-size-xl);
-  font-weight: bold;
+    font-weight: 700;
-  min-width: 6rem;
+    text-align: center;
-  text-align: center;
+    color: var(--color-primary);
-  color: #fff;
+    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: 3rem;
+    width: var(--touch-target-comfortable);
-  height: 3rem;
+    height: var(--touch-target-comfortable);
-  border: none;
+    border: none;
-  background: #ff4444;
+    background: var(--color-danger);
-  color: white;
+    color: white;
-  border-radius: 50%;
+    border-radius: 50%;
-  font-size: 1.5rem;
+    font-size: var(--font-size-lg);
-  display: flex;
+    display: flex;
-  align-items: center;
+    align-items: center;
-  justify-content: center;
+    justify-content: center;
-  margin-left: 1rem;
+    transition: all var(--transition-base);
-  transition: background-color 0.2s;
+    cursor: pointer;
-  position: relative;
+    box-shadow: var(--shadow-sm);
 }
+
 .delete-button::before {
-  content: '\1F5D1'; /* 🗑️ */
+    content: '🗑️';
-  font-size: 1.5rem;
+    font-size: var(--font-size-lg);
 }
+
 .delete-button:hover {
-  background: #cc0000;
+    background: #cc0000;
+    transform: scale(1.05);
+    box-shadow: var(--shadow-md);
 }
+
 .delete-button:active {
-  transform: scale(0.95);
+    transform: scale(0.95);
 }
+
+/* Empty state styling */
 .empty-state {
-  text-align: center;
+    text-align: center;
-  padding: 2rem;
+    padding: var(--space-xxl);
-  color: #666;
+    color: var(--color-text-muted);
-  font-size: 1.5rem;
+    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: 2rem;
+    font-size: var(--font-size-xxxl);
-  font-weight: 700;
+    font-weight: 700;
-  color: #fff;
+    color: var(--color-text);
-  background: #181818;
+    background: var(--color-surface);
-  padding: 24px 0 16px 0;
+    padding: var(--space-lg) 0 var(--space-md) 0;
-  margin-bottom: 8px;
+    margin-bottom: var(--space-sm);
-  text-align: left;
+    text-align: left;
-  width: 100%;
+    width: 100%;
-  letter-spacing: 0.5px;
+    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/components/GameList.tsx

@@ -0,0 +1,125 @@
+import { h } from 'preact';
+import { Card } from './ui/Card';
+import { Button } from './ui/Button';
+import styles from './GameList.module.css';
+import type { Game, GameFilter, StandardGame } from '../types/game';
+
+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'] + ' ' + styles['games-container']}>
+      <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>
+      
+      {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={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>
+  );
+}

src/components/Modal.tsx

@@ -1,17 +1,18 @@
 import { h } from 'preact';
 import styles from './Modal.module.css';
 
+interface ModalProps {
+  open: boolean;
+  title: string;
+  message: string;
+  onCancel: () => void;
+  onConfirm: () => void;
+}
+
 /**
  * Generic modal dialog for confirmation.
- * @param {object} props
- * @param {boolean} props.open
- * @param {string} props.title
- * @param {string} props.message
- * @param {Function} props.onCancel
- * @param {Function} props.onConfirm
- * @returns {import('preact').VNode|null}
  */
-const Modal = ({ open, title, message, onCancel, onConfirm }) => {
+const Modal = ({ open, title, message, onCancel, onConfirm }: ModalProps) => {
   if (!open) return null;
   return (
     <div className={styles['modal'] + ' ' + styles['show']} role="dialog" aria-modal="true" aria-labelledby="modal-title">

src/components/NewGame.jsx

@@ -1,117 +0,0 @@
-import { h } from 'preact';
-import { useState, useEffect } from 'preact/hooks';
-import styles from './NewGame.module.css';
-
-/**
- * New game creation form.
- * @param {object} props
- * @param {Function} props.onCreateGame
- * @param {string[]} props.playerNameHistory
- * @param {Function} props.onCancel
- * @param {Function} props.onGameCreated
- * @param {object} props.initialValues
- * @returns {import('preact').VNode}
- */
-const NewGame = ({ onCreateGame, playerNameHistory, onCancel, onGameCreated, initialValues }) => {
-  const [player1, setPlayer1] = useState(initialValues?.player1 || '');
-  const [player2, setPlayer2] = useState(initialValues?.player2 || '');
-  const [player3, setPlayer3] = useState(initialValues?.player3 || '');
-  const [gameType, setGameType] = useState(initialValues?.gameType || '8-Ball');
-  const [raceTo, setRaceTo] = useState(initialValues?.raceTo ? String(initialValues.raceTo) : '');
-  const [error, setError] = useState(null);
-
-  useEffect(() => {
-    setPlayer1(initialValues?.player1 || '');
-    setPlayer2(initialValues?.player2 || '');
-    setPlayer3(initialValues?.player3 || '');
-    setGameType(initialValues?.gameType || '8-Ball');
-    setRaceTo(initialValues?.raceTo ? String(initialValues.raceTo) : '');
-    setError(null);
-  }, [initialValues]);
-
-  const handleSubmit = (e) => {
-    e.preventDefault();
-    if (!player1.trim() || !player2.trim()) {
-      setError('Bitte Namen für beide Spieler eingeben');
-      return;
-    }
-    const id = onCreateGame({
-      player1: player1.trim(),
-      player2: player2.trim(),
-      player3: player3.trim() || null,
-      gameType,
-      raceTo: raceTo ? parseInt(raceTo) : null
-    });
-    if (onGameCreated && id) {
-      onGameCreated(id);
-    }
-  };
-
-  const handleClear = () => {
-    setPlayer1('');
-    setPlayer2('');
-    setPlayer3('');
-    setGameType('8-Ball');
-    setRaceTo('');
-    setError(null);
-  };
-
-  return (
-    <form className={styles['new-game-form']} onSubmit={handleSubmit} aria-label="Neues Spiel Formular">
-      <div className={styles['screen-title']}>Neues Spiel</div>
-      <div style={{ display: 'flex', justifyContent: 'flex-end', marginBottom: 16 }}>
-        <button type="button" className="btn" onClick={handleClear} aria-label="Felder leeren">Felder leeren</button>
-      </div>
-      <div className={styles['player-inputs']}>
-        <div className={styles['player-input']}>
-          <label htmlFor="player1-input">Spieler 1</label>
-          <div className={styles['name-input-container']}>
-            <input id="player1-input" className={styles['name-input']} placeholder="Name Spieler 1" value={player1} onInput={e => setPlayer1(e.target.value)} list="player1-history" aria-label="Name Spieler 1" />
-            <datalist id="player1-history">
-              {playerNameHistory.map((name, idx) => <option value={name} key={name + idx} />)}
-            </datalist>
-          </div>
-        </div>
-        <div className={styles['player-input']}>
-          <label htmlFor="player2-input">Spieler 2</label>
-          <div className={styles['name-input-container']}>
-            <input id="player2-input" className={styles['name-input']} placeholder="Name Spieler 2" value={player2} onInput={e => setPlayer2(e.target.value)} list="player2-history" aria-label="Name Spieler 2" />
-            <datalist id="player2-history">
-              {playerNameHistory.map((name, idx) => <option value={name} key={name + idx} />)}
-            </datalist>
-          </div>
-        </div>
-        <div className={styles['player-input']}>
-          <label htmlFor="player3-input">Spieler 3 (optional)</label>
-          <div className={styles['name-input-container']}>
-            <input id="player3-input" className={styles['name-input']} placeholder="Name Spieler 3" value={player3} onInput={e => setPlayer3(e.target.value)} list="player3-history" aria-label="Name Spieler 3" />
-            <datalist id="player3-history">
-              {playerNameHistory.map((name, idx) => <option value={name} key={name + idx} />)}
-            </datalist>
-          </div>
-        </div>
-      </div>
-      <div className={styles['game-settings']}>
-        <div className={styles['setting-group']}>
-          <label htmlFor="game-type-select">Spieltyp</label>
-          <select id="game-type-select" value={gameType} onChange={e => setGameType(e.target.value)} aria-label="Spieltyp">
-            <option value="8-Ball">8-Ball</option>
-            <option value="9-Ball">9-Ball</option>
-            <option value="10-Ball">10-Ball</option>
-          </select>
-        </div>
-        <div className={styles['setting-group']}>
-          <label htmlFor="race-to-input">Race to X (optional)</label>
-          <input id="race-to-input" type="number" value={raceTo} onInput={e => setRaceTo(e.target.value)} min="1" aria-label="Race to X" />
-        </div>
-      </div>
-      {error && <div className={styles['validation-error']}>{error}</div>}
-      <div className="nav-buttons">
-        <button type="button" className="btn" onClick={onCancel} aria-label="Abbrechen">Abbrechen</button>
-        <button type="submit" className="btn" aria-label="Spiel starten">Spiel starten</button>
-      </div>
-    </form>
-  );
-};
-
-export default NewGame; 

src/components/NewGame.module.css

@@ -8,105 +8,380 @@
     display: none;
     opacity: 0;
     transform: translateX(100%);
-    transition: transform 0.3s ease, opacity 0.3s ease;
+    transition: transform var(--transition-slow), opacity var(--transition-slow);
 }
 .screen-content {
     display: flex;
     flex-direction: column;
     min-height: 100vh;
-    padding: 20px;
+    padding: var(--space-lg);
     overflow-y: auto;
     -webkit-overflow-scrolling: touch;
 }
 .screen-title {
-    font-size: 2rem;
+    font-size: var(--font-size-xxl);
     font-weight: 700;
-    color: #fff;
+    color: var(--color-text);
-    margin-bottom: 32px;
+    margin-bottom: var(--space-xl);
     letter-spacing: 0.5px;
+    text-align: center;
 }
 .player-inputs {
     display: flex;
     flex-direction: column;
-    gap: 24px;
+    gap: var(--space-lg);
     width: 100%;
-    margin-bottom: 32px;
+    margin-bottom: var(--space-xl);
 }
 .player-input {
-    background: #222;
+    background: var(--color-background);
-    border-radius: 8px;
+    border-radius: var(--radius-md);
-    padding: 20px 16px 16px 16px;
+    padding: var(--space-lg);
-    margin-bottom: 0;
+    border: 2px solid var(--color-border);
-    box-shadow: 0 1px 4px rgba(0,0,0,0.12);
+    transition: border-color var(--transition-base);
+    position: relative;
+}
+.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: 12px;
+    margin-bottom: var(--space-md);
-    color: #ccc;
+    color: var(--color-text);
-    font-size: 1.2rem;
+    font-size: var(--font-size-lg);
     font-weight: 600;
 }
 .name-input-container {
     display: flex;
-    gap: 12px;
+    gap: var(--space-md);
+    position: relative;
 }
 .name-input {
-    flex: 2;
+    flex: 1;
-    padding: 14px 12px;
+    padding: var(--space-md);
-    border: 2px solid #333;
+    border: 2px solid var(--color-border);
-    background: #2a2a2a;
+    background: var(--color-surface);
-    color: white;
+    color: var(--color-text);
-    font-size: 1.1rem;
+    font-size: var(--font-size-base);
-    min-height: 44px;
+    min-height: var(--touch-target-comfortable);
-    border-radius: 0 6px 6px 0;
+    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: 32px;
+    margin-bottom: var(--space-xl);
 }
 .setting-group {
-    margin-bottom: 20px;
+    margin-bottom: var(--space-lg);
 }
 .setting-group label {
     display: block;
-    margin-bottom: 10px;
+    margin-bottom: var(--space-md);
-    color: #ccc;
+    color: var(--color-text);
-    font-size: 1.1rem;
+    font-size: var(--font-size-lg);
     font-weight: 600;
 }
 .setting-group select, .setting-group input {
     width: 100%;
-    padding: 14px 12px;
+    padding: var(--space-md);
-    border: 2px solid #333;
+    border: 2px solid var(--color-border);
-    background: #2a2a2a;
+    background: var(--color-surface);
-    color: white;
+    color: var(--color-text);
-    font-size: 1.1rem;
+    font-size: var(--font-size-base);
-    min-height: 44px;
+    min-height: var(--touch-target-comfortable);
-    border-radius: 6px;
+    border-radius: var(--radius-md);
+    transition: border-color var(--transition-base);
 }
 .setting-group input:focus, .setting-group select:focus {
     outline: none;
-    border-color: #666;
+    border-color: var(--color-primary);
+    box-shadow: 0 0 0 3px var(--color-primary-light);
 }
 .validation-error {
-    color: #f44336;
+    color: var(--color-danger);
-    background: #2a2a2a;
+    background: var(--color-surface);
-    border-radius: 6px;
+    border: 1px solid var(--color-danger);
-    padding: 12px;
+    border-radius: var(--radius-md);
-    margin-bottom: 16px;
+    padding: var(--space-md);
-    font-size: 1.1rem;
+    margin-bottom: var(--space-md);
+    font-size: var(--font-size-base);
     text-align: center;
+    font-weight: 500;
 }
 .new-game-form {
     width: 100%;
-    max-width: 700px;
+    max-width: 600px;
-    margin: 32px auto 0 auto;
+    margin: var(--space-xl) auto 0 auto;
-    background: #181818;
+    background: var(--color-surface);
-    border-radius: 12px;
+    border-radius: var(--radius-xl);
-    box-shadow: 0 2px 16px rgba(0,0,0,0.4);
+    box-shadow: var(--shadow-lg);
-    padding: 32px 24px 24px 24px;
+    padding: var(--space-xl) var(--space-lg) var(--space-lg) var(--space-lg);
     display: flex;
     flex-direction: column;
-    gap: 0;
+    gap: var(--space-lg);
+    border: 1px solid var(--color-border);
+}
+.progress-indicator {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    gap: var(--space-md);
+    margin-bottom: var(--space-lg);
+}
+.progress-dot {
+    width: 16px;
+    height: 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-btn {
+    min-width: 80px;
+    min-height: var(--touch-target-comfortable);
+    font-size: var(--font-size-base);
+    border-radius: var(--radius-md);
+    background: var(--color-secondary);
+    color: var(--color-text);
+    border: 1px solid var(--color-border);
+    cursor: pointer;
+    padding: var(--space-sm) var(--space-md);
+    transition: all var(--transition-base);
+    font-weight: 500;
+}
+.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);
+}
+.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/components/NewGame.tsx

@@ -0,0 +1,757 @@
+import { h } from 'preact';
+import { useState, useEffect, useRef } from 'preact/hooks';
+import styles from './NewGame.module.css';
+import modalStyles from './PlayerSelectModal.module.css';
+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';
+
+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>
+);
+
+interface PlayerStepProps {
+  playerNameHistory: string[];
+  onNext: (name: string) => void;
+  onCancel: () => void;
+  initialValue?: string;
+}
+
+/**
+ * Player 1 input step for multi-step game creation wizard.
+ */
+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['screen-title']}>Neues Spiel – Schritt {WIZARD_STEPS.PLAYER1}/{UI_CONSTANTS.TOTAL_WIZARD_STEPS}</div>
+      <div className={styles['progress-indicator']} style={{ marginBottom: UI_CONSTANTS.MARGIN_BOTTOM_MEDIUM }}>
+        <span className={styles['progress-dot'] + ' ' + styles['active']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+      </div>
+      <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);
+              
+              // Real-time validation feedback
+              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}
+            >
+              {/* Unicode heavy multiplication X */}
+              ×
+            </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>
+      )}
+      {isModalOpen && (
+        <PlayerSelectModal
+          players={playerNameHistory}
+          onSelect={handleModalSelect}
+          onClose={() => setIsModalOpen(false)}
+        />
+      )}
+      <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' }}
+        >
+          {/* Unicode left arrow */}
+          &#8592;
+        </button>
+        <button
+          type="submit"
+          className={styles['arrow-btn']}
+          aria-label="Weiter"
+          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' }}
+        >
+          {/* Unicode right arrow */}
+          &#8594;
+        </button>
+      </div>
+    </form>
+  );
+};
+
+/**
+ * Player 2 input step for multi-step game creation wizard.
+ */
+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['screen-title']}>Neues Spiel – Schritt 2/5</div>
+      <div className={styles['progress-indicator']} style={{ marginBottom: 24 }}>
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot'] + ' ' + styles['active']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+      </div>
+      <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 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"
+          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>
+  );
+};
+
+/**
+ * Player 3 input step for multi-step game creation wizard.
+ */
+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();
+    // Player 3 is optional, so always allow submission
+    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['screen-title']}>Neues Spiel – Schritt 3/5</div>
+      <div className={styles['progress-indicator']} style={{ marginBottom: 24 }}>
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot'] + ' ' + styles['active']} />
+        <span className={styles['progress-dot']} />
+        <span className={styles['progress-dot']} />
+      </div>
+      <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 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>
+        <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"
+            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>
+  );
+};
+
+interface GameTypeStepProps {
+  onNext: (type: string) => void;
+  onCancel: () => void;
+  initialValue?: string;
+}
+
+/**
+ * Game Type selection step for multi-step game creation wizard.
+ */
+const GameTypeStep = ({ onNext, onCancel, initialValue = '' }: GameTypeStepProps) => {
+  const [gameType, setGameType] = useState(initialValue);
+  const gameTypes = ['8-Ball', '9-Ball', '10-Ball'];
+
+  const handleSelect = (selectedType: string) => {
+    setGameType(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['screen-title']}>Neues Spiel – Schritt 4/5</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'] + ' ' + styles['active']} />
+        <span className={styles['progress-dot']} />
+      </div>
+      <div className={styles['game-type-selection']}>
+        {gameTypes.map(type => (
+          <button
+            key={type}
+            type="button"
+            className={`${styles['game-type-btn']} ${gameType === type ? styles.selected : ''}`}
+            onClick={() => handleSelect(type)}
+          >
+            {type}
+          </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' }}
+        >
+          {/* Unicode left arrow */}
+          &#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,
+          }}
+        >
+          {/* Unicode right arrow */}
+          &#8594;
+        </button>
+      </div>
+    </form>
+  );
+};
+
+interface RaceToStepProps {
+  onNext: (raceTo: string | number) => void;
+  onCancel: () => void;
+  initialValue?: string | number;
+  gameType?: string;
+}
+
+/**
+ * Race To selection step for multi-step game creation wizard.
+ */
+const RaceToStep = ({ onNext, onCancel, initialValue = '', gameType }: RaceToStepProps) => {
+  const quickPicks = [1, 2, 3, 4, 5, 6, 7, 8, 9];
+  const defaultValue = 5;
+  const [raceTo, setRaceTo] = useState<string | number>(initialValue !== '' ? initialValue : defaultValue);
+
+  useEffect(() => {
+    if ((initialValue === '' || initialValue === undefined) && raceTo !== defaultValue) {
+      setRaceTo(defaultValue);
+    }
+    if (initialValue !== '' && initialValue !== undefined && initialValue !== raceTo) {
+      setRaceTo(initialValue);
+    }
+  }, [gameType, initialValue, defaultValue]);
+
+  const handleQuickPick = (value: number) => {
+    // For endlos (endless) games, use Infinity to prevent automatic completion
+    setRaceTo(value === 0 ? 'Infinity' : value);
+  };
+
+  const handleInputChange = (e: Event) => {
+    const target = e.target as HTMLInputElement;
+    setRaceTo(target.value);
+  };
+
+  const handleSubmit = (e: Event) => {
+    e.preventDefault();
+    // Handle Infinity for endlos games, otherwise parse as integer
+    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']}>Neues Spiel – Schritt 5/5</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'] + ' ' + styles['active']} />
+      </div>
+      <div className={styles['endlos-container']}>
+        <button
+          type="button"
+          className={`${styles['race-to-btn']} ${styles['endlos-btn']} ${raceTo === 'Infinity' ? styles.selected : ''}`}
+          onClick={() => handleQuickPick(0)}
+        >
+          Endlos
+        </button>
+      </div>
+      <div className={styles['race-to-selection']}>
+        {quickPicks.map(value => (
+          <button
+            key={value}
+            type="button"
+            className={`${styles['race-to-btn']} ${parseInt(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' }}
+        >
+          {/* Unicode left arrow */}
+          &#8592;
+        </button>
+        <button
+          type="submit"
+          className={styles['arrow-btn']}
+          aria-label="Fertigstellen"
+          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' }}
+        >
+          {/* Unicode checkmark */}
+          &#10003;
+        </button>
+      </div>
+    </form>
+  );
+};
+
+export { Player1Step, Player2Step, Player3Step, GameTypeStep, RaceToStep }; 

src/components/PlayerInputStep.tsx

@@ -0,0 +1 @@
+import { h } from "preact";

src/components/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/components/Toast.module.css

@@ -0,0 +1,134 @@
+.toast {
+  position: fixed;
+  top: 20px;
+  right: 20px;
+  z-index: 10000;
+  min-width: 300px;
+  max-width: 400px;
+  background: #fff;
+  border-radius: 12px;
+  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
+  transform: translateX(100%);
+  opacity: 0;
+  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+  overflow: hidden;
+}
+
+.toast.show {
+  transform: translateX(0);
+  opacity: 1;
+}
+
+.toast.hide {
+  transform: translateX(100%);
+  opacity: 0;
+}
+
+.toastContent {
+  display: flex;
+  align-items: center;
+  padding: 16px 20px;
+  gap: 12px;
+}
+
+.toastIcon {
+  width: 24px;
+  height: 24px;
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-weight: bold;
+  font-size: 14px;
+  flex-shrink: 0;
+}
+
+.toastMessage {
+  flex: 1;
+  font-size: 14px;
+  font-weight: 500;
+  color: #333;
+  line-height: 1.4;
+}
+
+.toastClose {
+  background: none;
+  border: none;
+  font-size: 18px;
+  color: #666;
+  cursor: pointer;
+  padding: 0;
+  width: 20px;
+  height: 20px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 50%;
+  transition: all 0.2s ease;
+  flex-shrink: 0;
+}
+
+.toastClose:hover {
+  background: #f0f0f0;
+  color: #333;
+}
+
+/* Toast types */
+.toast.success {
+  border-left: 4px solid #4caf50;
+}
+
+.toast.success .toastIcon {
+  background: #4caf50;
+  color: #fff;
+}
+
+.toast.error {
+  border-left: 4px solid #f44336;
+}
+
+.toast.error .toastIcon {
+  background: #f44336;
+  color: #fff;
+}
+
+.toast.info {
+  border-left: 4px solid #2196f3;
+}
+
+.toast.info .toastIcon {
+  background: #2196f3;
+  color: #fff;
+}
+
+/* Animation keyframes */
+@keyframes slideInRight {
+  from {
+    transform: translateX(100%);
+    opacity: 0;
+  }
+  to {
+    transform: translateX(0);
+    opacity: 1;
+  }
+}
+
+@keyframes slideOutRight {
+  from {
+    transform: translateX(0);
+    opacity: 1;
+  }
+  to {
+    transform: translateX(100%);
+    opacity: 0;
+  }
+}
+
+.toast.show {
+  animation: slideInRight 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.toast.hide {
+  animation: slideOutRight 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+}
+

src/components/Toast.tsx

@@ -0,0 +1,59 @@
+import { h } from 'preact';
+import { useEffect, useState } from 'preact/hooks';
+import styles from './Toast.module.css';
+
+type ToastType = 'success' | 'error' | 'info';
+
+interface ToastProps {
+  show: boolean;
+  message: string;
+  type?: ToastType;
+  onClose: () => void;
+  duration?: number;
+}
+
+/**
+ * Toast notification component for user feedback
+ */
+const Toast = ({ show, message, type = 'info', onClose, duration = 3000 }: ToastProps) => {
+  const [isVisible, setIsVisible] = useState(false);
+
+  useEffect(() => {
+    if (show) {
+      setIsVisible(true);
+      const timer = setTimeout(() => {
+        setIsVisible(false);
+        setTimeout(onClose, 300); // Wait for animation to complete
+      }, duration);
+      return () => clearTimeout(timer);
+    }
+  }, [show, duration, onClose]);
+
+  if (!show && !isVisible) return null;
+
+  return (
+    <div className={`${styles.toast} ${styles[type]} ${isVisible ? styles.show : styles.hide}`}>
+      <div className={styles.toastContent}>
+        <div className={styles.toastIcon}>
+          {type === 'success' && '✓'}
+          {type === 'error' && '✕'}
+          {type === 'info' && 'ℹ'}
+        </div>
+        <span className={styles.toastMessage}>{message}</span>
+        <button 
+          className={styles.toastClose} 
+          onClick={() => {
+            setIsVisible(false);
+            setTimeout(onClose, 300);
+          }}
+          aria-label="Schließen"
+        >
+          ×
+        </button>
+      </div>
+    </div>
+  );
+};
+
+export default Toast;
+

src/components/ValidationModal.module.css

@@ -1 +0,0 @@
-/* DEPRECATED: All modal styles are now in Modal.module.css */ 

src/components/ValidationModal.tsx

@@ -1,15 +1,16 @@
 import { h } from 'preact';
 import styles from './Modal.module.css';
 
+interface ValidationModalProps {
+  open: boolean;
+  message: string;
+  onClose: () => void;
+}
+
 /**
  * Modal for displaying validation errors.
- * @param {object} props
- * @param {boolean} props.open
- * @param {string} props.message
- * @param {Function} props.onClose
- * @returns {import('preact').VNode|null}
  */
-const ValidationModal = ({ open, message, onClose }) => {
+const ValidationModal = ({ open, message, onClose }: ValidationModalProps) => {
   if (!open) return null;
   return (
     <div className={styles['modal'] + ' ' + styles['show']} id="validation-modal" role="alertdialog" aria-modal="true" aria-labelledby="validation-modal-title">

src/components/screens/GameDetailScreen.tsx

@@ -0,0 +1,46 @@
+import { h } from 'preact';
+import { Screen } from '../ui/Layout';
+import GameDetail from '../GameDetail';
+import type { Game, EndlosGame } from '../../types/game';
+
+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 +1,45 @@
+import { h } from 'preact';
+import { Button } from '../ui/Button';
+import { Screen } from '../ui/Layout';
+import GameList from '../GameList';
+import type { Game, GameFilter } from '../../types/game';
+
+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>
+      <Button
+        variant="primary"
+        size="large"
+        onClick={onShowNewGame}
+        aria-label="Neues Spiel starten"
+        style={{ width: '100%', marginBottom: '24px' }}
+      >
+        + Neues Spiel
+      </Button>
+      
+      <GameList
+        games={games}
+        filter={filter}
+        onShowGameDetail={onShowGameDetail}
+        onDeleteGame={onDeleteGame}
+        setFilter={onFilterChange}
+      />
+    </Screen>
+  );
+}

src/components/screens/NewGameScreen.tsx

@@ -0,0 +1,121 @@
+import { h } from 'preact';
+import { Screen } from '../ui/Layout';
+import { Player1Step, Player2Step, Player3Step, GameTypeStep, RaceToStep } from '../NewGame';
+import type { NewGameStep, NewGameData } from '../../types/game';
+
+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) => {
+    onDataChange({ 
+      gameType: type as any, // Type assertion for now, could be improved with proper validation
+      raceTo: '8'
+    });
+    onStepChange('raceTo');
+  };
+
+  const handleRaceToNext = (raceTo: string) => {
+    const finalData = { ...data, raceTo };
+    onCreateGame(finalData);
+  };
+
+  const handleStepBack = () => {
+    switch (step) {
+      case 'player2':
+        onStepChange('player1');
+        break;
+      case 'player3':
+        onStepChange('player2');
+        break;
+      case 'gameType':
+        onStepChange('player3');
+        break;
+      case 'raceTo':
+        onStepChange('gameType');
+        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}
+        />
+      )}
+    </Screen>
+  );
+}

src/components/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/components/ui/Button.tsx

@@ -0,0 +1,32 @@
+import { h } from 'preact';
+import type { ButtonProps } from '../../types/ui';
+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/components/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/components/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/components/ui/Layout.module.css

@@ -0,0 +1,44 @@
+.layout {
+  min-height: 100vh;
+  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%;
+}
+
+.screen {
+  width: 100%;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+}
+
+/* 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);
+  }
+}

src/components/ui/Layout.tsx

@@ -0,0 +1,33 @@
+import { h } from 'preact';
+import styles from './Layout.module.css';
+
+interface LayoutProps {
+  children: any;
+  className?: string;
+}
+
+export function Layout({ children, className = '' }: LayoutProps) {
+  return (
+    <div className={`${styles.layout} ${className}`}>
+      <a href="#main-content" className="skip-link">
+        Zum Hauptinhalt springen
+      </a>
+      <div className={styles.content} id="main-content">
+        {children}
+      </div>
+    </div>
+  );
+}
+
+interface ScreenProps {
+  children: any;
+  className?: string;
+}
+
+export function Screen({ children, className = '' }: ScreenProps) {
+  return (
+    <div className={`${styles.screen} ${className}`}>
+      {children}
+    </div>
+  );
+}

src/hooks/useGameState.ts

@@ -0,0 +1,121 @@
+import { useState, useEffect, useCallback } from 'preact/hooks';
+import type { Game, NewGameData, GameFilter } from '../types/game';
+import { GameService } from '../services/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 '../types/ui';
+import type { Game } from '../types/game';
+
+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 '../types/game';
+
+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/pages/index.astro

@@ -1,9 +1,38 @@
 ---
 import "../styles/index.css";
-import App from "../components/App.jsx";
+import BscScoreApp from "../components/BscScoreApp.astro";
+import App from "../components/App";
 ---
 
-<!-- Main entry point for the Pool Scoring App -->
+<!DOCTYPE html>
-<main class="screen-container">
+<html lang="de">
-  <App client:only="preact" />
+<head>
-</main>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>BSC Score - Pool Scoring App</title>
+  <meta name="description" content="Professional pool/billiards scoring application for tournaments and casual games">
+  
+  <!-- Performance optimizations -->
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+  
+  <!-- PWA Meta tags -->
+  <meta name="theme-color" content="#1a1a1a">
+  <meta name="apple-mobile-web-app-capable" content="yes">
+  <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
+  
+  <!-- Favicon -->
+  <link rel="icon" type="image/x-icon" href="/favicon.ico">
+  <link rel="icon" type="image/png" sizes="192x192" href="/icon-192.png">
+  <link rel="icon" type="image/png" sizes="512x512" href="/icon-512.png">
+</head>
+
+<body>
+  <BscScoreApp>
+    <!-- 
+      Using client:only for the main app since it's highly interactive
+      and benefits from full client-side rendering 
+    -->
+    <App client:only="preact" slot="app-content" />
+  </BscScoreApp>
+</body>
+</html>

src/services/gameService.ts

@@ -0,0 +1,281 @@
+import type { Game, GameType, StandardGame, EndlosGame, NewGameData } from '../types/game';
+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');
+    }
+    
+    const 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,
+    };
+
+    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);
+    }
+    
+    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/services/indexedDBService.ts

@@ -0,0 +1,353 @@
+import type { Game, GameType, StandardGame, EndlosGame, NewGameData } from '../types/game';
+
+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/styles/index.css

@@ -11,76 +11,230 @@
     user-select: none;
     -webkit-tap-highlight-color: transparent;
 }
-body {
+
-    font-family: Arial, sans-serif;
+/* Design system tokens */
-    background-color: #1a1a1a;
+:root {
-    color: white;
+    /* Colors */
-    min-height: 100vh;
+    --color-primary: #ff9800;
-    overscroll-behavior: none;
+    --color-primary-hover: #ffa726;
-}
+    --color-primary-light: rgba(255, 152, 0, 0.1);
-input, select {
+    --color-secondary: #333;
-    min-height: 44px;
+    --color-secondary-hover: #444;
-    padding: 12px;
+    --color-background: #1a1a1a;
-    font-size: 1.2rem;
+    --color-surface: #222;
+    --color-surface-hover: #2a2a2a;
+    --color-text: #fff;
+    --color-text-secondary: #ccc;
+    --color-text-muted: #999;
+    --color-border: #333;
+    --color-success: #4caf50;
+    --color-danger: #f44336;
+    --color-warning: #ff9800;
+    
+    /* Spacing system - 8px base */
+    --space-xs: 0.25rem;  /* 4px */
+    --space-sm: 0.5rem;   /* 8px */
+    --space-md: 1rem;     /* 16px */
+    --space-lg: 1.5rem;   /* 24px */
+    --space-xl: 2rem;     /* 32px */
+    --space-xxl: 3rem;    /* 48px */
+    
+    /* Typography */
+    --font-size-xs: 0.75rem;   /* 12px */
+    --font-size-sm: 0.875rem;  /* 14px */
+    --font-size-base: 1rem;    /* 16px */
+    --font-size-lg: 1.125rem;  /* 18px */
+    --font-size-xl: 1.25rem;   /* 20px */
+    --font-size-xxl: 1.5rem;   /* 24px */
+    --font-size-xxxl: 2rem;    /* 32px */
+    
+    /* Touch targets */
+    --touch-target-min: 44px;
+    --touch-target-comfortable: 48px;
+    
+    /* Border radius */
+    --radius-sm: 4px;
+    --radius-md: 8px;
+    --radius-lg: 12px;
+    --radius-xl: 16px;
+    
+    /* Shadows */
+    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
+    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.16);
+    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.24);
+    
+    /* Transitions */
+    --transition-fast: 0.15s ease;
+    --transition-base: 0.2s ease;
+    --transition-slow: 0.3s ease;
 }
 
-/* Responsive adjustments for fullscreen toggle button */
+/* Tablet-specific design tokens */
-@media screen and (max-width: 480px) {
+@media (min-width: 768px) and (max-width: 1024px) {
-    .fullscreenToggle {
+    :root {
-        bottom: 15px;
+        --touch-target-min: 48px;
-        right: 15px;
+        --touch-target-comfortable: 56px;
-        width: 40px;
+        --space-md: 1.25rem;  /* 20px */
-        height: 40px;
+        --space-lg: 2rem;     /* 32px */
+        --space-xl: 2.5rem;   /* 40px */
+        --font-size-base: 1.125rem;  /* 18px */
+        --font-size-lg: 1.25rem;     /* 20px */
+        --font-size-xl: 1.5rem;      /* 24px */
+        --font-size-xxl: 1.75rem;    /* 28px */
+        --font-size-xxxl: 2.25rem;   /* 36px */
     }
 }
 
-/* Utility button for new game (global, not component-specific) */
+body {
-.new-game-button {
+    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
-    width: 100%;
+    background-color: var(--color-background);
-    background: #222;
+    color: var(--color-text);
-    color: #fff;
+    min-height: 100vh;
-    border: none;
+    overscroll-behavior: none;
-    border-radius: 0;
+    line-height: 1.5;
-    font-size: 1.4rem;
+    -webkit-font-smoothing: antialiased;
-    font-weight: 600;
+    -moz-osx-font-smoothing: grayscale;
-    padding: 20px 0;
-    margin-bottom: 16px;
-    cursor: pointer;
-    transition: background 0.2s, color 0.2s;
-    text-align: center;
-    display: block;
 }
 
-.new-game-button:hover {
+/* Improved input styling for better tablet experience */
-    background: #333;
+input, select {
+    min-height: var(--touch-target-comfortable);
+    padding: var(--space-md);
+    font-size: var(--font-size-base);
+    border: 2px solid var(--color-border);
+    border-radius: var(--radius-md);
+    background: var(--color-surface);
+    color: var(--color-text);
+    transition: border-color var(--transition-base);
 }
 
-/* Shared utility classes for buttons and layout */
+input:focus, select:focus {
+    outline: none;
+    border-color: var(--color-primary);
+    box-shadow: 0 0 0 3px var(--color-primary-light);
+}
+
+/* Enhanced button styling */
 .btn {
-    flex: 1;
+    min-height: var(--touch-target-comfortable);
-    min-width: 100px;
+    padding: var(--space-md) var(--space-lg);
-    padding: 18px;
+    color: var(--color-text);
-    color: white;
+    background: var(--color-secondary);
-    background: #333;
     border: none;
-    border-radius: 6px;
+    border-radius: var(--radius-md);
-    font-size: 1.2rem;
+    font-size: var(--font-size-base);
     font-weight: 600;
     cursor: pointer;
     touch-action: manipulation;
-    transition: background 0.2s, color 0.2s;
+    transition: all var(--transition-base);
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    gap: var(--space-sm);
+    text-decoration: none;
+    user-select: none;
 }
+
 .btn:hover {
-    background: #444;
+    background: var(--color-secondary-hover);
+    transform: translateY(-1px);
 }
+
+.btn:active {
+    transform: translateY(0);
+}
+
+.btn-primary {
+    background: var(--color-primary);
+    color: white;
+}
+
+.btn--secondary {
+    background: #333;
+    color: #fff;
+    border: 2px solid #555;
+}
+
+.btn--secondary:hover {
+    background: #444;
+    border-color: #666;
+    transform: translateY(-1px);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
+}
+}
+
+.btn-primary:hover {
+    background: var(--color-primary-hover);
+}
+
+/* Utility button for new game with better spacing */
+.new-game-button {
+    width: 100%;
+    background: var(--color-primary);
+    color: white;
+    border: none;
+    border-radius: var(--radius-lg);
+    font-size: var(--font-size-xxl);
+    font-weight: 700;
+    padding: var(--space-xl) var(--space-lg);
+    margin-bottom: var(--space-lg);
+    cursor: pointer;
+    transition: all var(--transition-base);
+    text-align: center;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    box-shadow: var(--shadow-lg);
+    letter-spacing: 0.5px;
+    gap: var(--space-md);
+    min-height: var(--touch-target-comfortable);
+}
+
+.new-game-button::before {
+    content: '+';
+    font-size: 2.2rem;
+    font-weight: 900;
+    display: inline-block;
+    line-height: 1;
+}
+
+.new-game-button:hover {
+    background: var(--color-primary-hover);
+    transform: translateY(-2px);
+    box-shadow: 0 8px 40px rgba(255, 152, 0, 0.4);
+}
+
+.new-game-button:active {
+    transform: translateY(-1px);
+}
+
+/* Navigation buttons with improved spacing */
 .nav-buttons {
     display: flex;
     flex-direction: column;
-    gap: 12px;
+    gap: var(--space-md);
-    margin: 16px 0 0 0;
+    margin: var(--space-lg) 0 0 0;
 }
 
-/* Modal overlay (global, not component-specific) */
+/* Tablet-specific improvements */
+@media (min-width: 768px) and (max-width: 1024px) {
+    .nav-buttons {
+        flex-direction: row;
+        gap: var(--space-lg);
+    }
+    
+    .btn {
+        flex: 1;
+        min-height: var(--touch-target-comfortable);
+    }
+    
+    .new-game-button {
+        padding: var(--space-xxl) var(--space-xl);
+        font-size: var(--font-size-xxxl);
+    }
+}
+
+/* Enhanced modal styling */
 .modal {
     position: fixed;
     top: 0;
@@ -88,12 +242,69 @@ input, select {
     width: 100vw;
     height: 100vh;
     background-color: rgba(0, 0, 0, 0.8);
+    backdrop-filter: blur(4px);
     z-index: 9999;
     display: flex;
     justify-content: center;
     align-items: center;
+    padding: var(--space-lg);
 }
 
 .modal.show {
     display: flex;
 }
+
+/* Screen reader only content */
+.sr-only {
+    position: absolute;
+    width: 1px;
+    height: 1px;
+    padding: 0;
+    margin: -1px;
+    overflow: hidden;
+    clip: rect(0, 0, 0, 0);
+    white-space: nowrap;
+    border: 0;
+}
+
+/* Focus styles for better accessibility */
+*:focus {
+    outline: 2px solid var(--color-primary);
+    outline-offset: 2px;
+}
+
+/* Skip link for keyboard navigation */
+.skip-link {
+    position: absolute;
+    top: -40px;
+    left: 6px;
+    background: var(--color-primary);
+    color: white;
+    padding: 8px;
+    text-decoration: none;
+    border-radius: 4px;
+    z-index: 10000;
+}
+
+.skip-link:focus {
+    top: 6px;
+}
+
+/* Responsive fullscreen toggle */
+@media screen and (max-width: 480px) {
+    .fullscreenToggle {
+        bottom: var(--space-md);
+        right: var(--space-md);
+        width: 40px;
+        height: 40px;
+    }
+}
+
+@media (min-width: 768px) and (max-width: 1024px) {
+    .fullscreenToggle {
+        bottom: var(--space-lg);
+        right: var(--space-lg);
+        width: 56px;
+        height: 56px;
+    }
+} 

src/types/css-modules.d.ts

@@ -0,0 +1,9 @@
+declare module '*.module.css' {
+  const classes: { [key: string]: string };
+  export default classes;
+}
+
+declare module '*.css' {
+  const content: string;
+  export default content;
+}

src/types/game.ts

@@ -0,0 +1,65 @@
+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 interface StandardGame extends BaseGame {
+  player1: string;
+  player2: string;
+  player3?: string;
+  score1: number;
+  score2: number;
+  score3?: number;
+}
+
+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;
+}
+
+export type NewGameStep = 'player1' | 'player2' | 'player3' | 'gameType' | 'raceTo' | null;
+
+export type GameFilter = 'all' | 'active' | 'completed';

src/types/ui.ts

@@ -0,0 +1,33 @@
+export interface ModalState {
+  open: boolean;
+  gameId?: number | null;
+}
+
+export interface ValidationState {
+  open: boolean;
+  message: string;
+}
+
+import type { Game } from './game';
+
+export interface CompletionModalState {
+  open: boolean;
+  game: Game | null;
+}
+
+export interface AppScreen {
+  current: 'game-list' | 'new-game' | 'game-detail';
+}
+
+export interface ButtonProps {
+  variant?: 'primary' | 'secondary' | 'danger';
+  size?: 'small' | 'medium' | 'large';
+  disabled?: boolean;
+  children?: React.ReactNode;
+  onClick?: () => void;
+  'aria-label'?: string;
+  style?: React.CSSProperties;
+  className?: string;
+  type?: 'button' | 'submit' | 'reset';
+  [key: string]: unknown; // Allow additional props
+}

src/utils/constants.ts

@@ -0,0 +1,133 @@
+import type { GameType } from '../types/game';
+
+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/utils/gameUtils.ts

@@ -0,0 +1,108 @@
+import type { Game, StandardGame, EndlosGame } from '../types/game';
+
+/**
+ * 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/utils/testIndexedDB.ts

@@ -0,0 +1,140 @@
+import { IndexedDBService } from '../services/indexedDBService';
+import { GameService } from '../services/gameService';
+import type { NewGameData } from '../types/game';
+
+/**
+ * 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/utils/validation.ts

@@ -0,0 +1,99 @@
+import { APP_CONFIG, VALIDATION_MESSAGES } from './constants';
+import type { NewGameData } from '../types/game';
+
+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,
+  };
+}

tsconfig.json

@@ -9,6 +9,7 @@
   ],
   "compilerOptions": {
     "jsx": "react-jsx",
-    "jsxImportSource": "preact"
+    "jsxImportSource": "preact",
+    "lib": ["ES2020", "DOM", "DOM.Iterable"]
   }
 }