refactor(new-game): modernize UI, remove player selects

- Refactored New Game screen to use a modern, card-like, dark-themed layout
- Removed select dropdowns for previous players, now only datalist+input for player names
- Updated paddings, backgrounds, borders, and font sizes for a visually consistent, modern look
- No logic changes, only markup and style

Refs #1

src/components/NewGame.module.css

@@ -18,94 +18,117 @@
     -webkit-overflow-scrolling: touch;
 }
 .screen-title {
-    font-size: 24px;
-    margin-bottom: 20px;
+    font-size: 2rem;
+    font-weight: 700;
+    color: #fff;
+    margin-bottom: 32px;
+    letter-spacing: 0.5px;
 }
 .player-inputs {
     display: flex;
     flex-direction: column;
-    gap: 20px;
+    gap: 24px;
     width: 100%;
-    flex: 1;
+    margin-bottom: 32px;
 }
 .player-input {
-    margin-bottom: 20px;
+    background: #222;
+    border-radius: 8px;
+    padding: 20px 16px 16px 16px;
+    margin-bottom: 0;
+    box-shadow: 0 1px 4px rgba(0,0,0,0.12);
 }
 .player-input label {
     display: block;
-    margin-bottom: 10px;
+    margin-bottom: 12px;
     color: #ccc;
-    font-size: 24px;
+    font-size: 1.2rem;
+    font-weight: 600;
 }
 .name-input-container {
     display: flex;
-    gap: 10px;
-}
-.name-select {
-    flex: 1;
-    padding: 30px;
-    border: 2px solid #333;
-    background: #2a2a2a;
-    color: white;
-    font-size: 24px;
-    min-height: 44px;
+    gap: 12px;
 }
 .name-input {
     flex: 2;
-    padding: 30px;
+    padding: 14px 12px;
     border: 2px solid #333;
     background: #2a2a2a;
     color: white;
-    font-size: 24px;
+    font-size: 1.1rem;
     min-height: 44px;
-}
-.name-select:focus, .name-input:focus {
-    outline: none;
-    border-color: #666;
+    border-radius: 0 6px 6px 0;
 }
 .game-settings {
-    margin-top: 20px;
+    margin-top: 0;
     width: 100%;
+    margin-bottom: 32px;
 }
 .setting-group {
     margin-bottom: 20px;
 }
-.setting-group select {
+.setting-group label {
+    display: block;
+    margin-bottom: 10px;
+    color: #ccc;
+    font-size: 1.1rem;
+    font-weight: 600;
+}
+.setting-group select, .setting-group input {
     width: 100%;
-    padding: 30px;
+    padding: 14px 12px;
     border: 2px solid #333;
     background: #2a2a2a;
     color: white;
-    font-size: 24px;
+    font-size: 1.1rem;
     min-height: 44px;
-    padding: 12px;
+    border-radius: 6px;
 }
-.setting-group input {
-    width: 100%;
-    padding: 30px;
-    border: 2px solid #333;
-    background: #2a2a2a;
-    color: white;
-    font-size: 24px;
-}
-.setting-group input:focus {
+.setting-group input:focus, .setting-group select:focus {
     outline: none;
     border-color: #666;
 }
+.validation-error {
+    color: #f44336;
+    background: #2a2a2a;
+    border-radius: 6px;
+    padding: 12px;
+    margin-bottom: 16px;
+    font-size: 1.1rem;
+    text-align: center;
+}
 .nav-buttons {
     display: flex;
     flex-direction: column;
-    gap: 10px;
-    margin: 20px 0 40px 0;
+    gap: 12px;
+    margin: 16px 0 0 0;
 }
 .btn {
     flex: 1;
     min-width: 100px;
-    padding: 20px;
+    padding: 18px;
     color: white;
+    background: #333;
     border: none;
-    border-radius: 0;
-    font-size: 20px;
+    border-radius: 6px;
+    font-size: 1.2rem;
+    font-weight: 600;
     cursor: pointer;
     touch-action: manipulation;
+    transition: background 0.2s, color 0.2s;
+}
+.btn:hover {
+    background: #444;
+}
+.new-game-form {
+    width: 100%;
+    max-width: 700px;
+    margin: 32px auto 0 auto;
+    background: #181818;
+    border-radius: 12px;
+    box-shadow: 0 2px 16px rgba(0,0,0,0.4);
+    padding: 32px 24px 24px 24px;
+    display: flex;
+    flex-direction: column;
+    gap: 0;
 }