.tetris-page .game-card {
    background: var(--panel);
    border-radius: 16px;
    padding: 18px;
    box-shadow: var(--shadow);
    border: 1px solid var(--stroke);
    color: var(--text);
  }
  .tetris-page .game-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
  }
  .tetris-page .game-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
  }
  .tetris-page .game-actions {
    display: flex;
    gap: 8px;
  }
  .tetris-page .stats {
    display: flex;
    gap: 16px;
    margin: 12px 0 4px;
    font-weight: 600;
    color: var(--muted);
  }
  .tetris-page .game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    margin-top: 8px;
    padding: 10px;
    background: var(--panel2);
    border: 1px solid var(--stroke);
    border-radius: 14px;
  }
  .tetris-page canvas {
    background: var(--panel2);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 2px solid var(--stroke);
    touch-action: none;
    width: 200px;
    height: 400px;
    max-width: 100%;
  }
  .tetris-page .mobile-controls {
    display: none;
    width: 100%;
    justify-content: center;
    gap: 18px;
    margin-top: 6px;
  }
  .tetris-page .d-pad {
    display: grid;
    grid-template-columns: repeat(3, 48px);
    gap: 6px;
    justify-items: center;
  }
  .tetris-page .control-btn,
  .tetris-page .action-btn {
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.22);
    border: 2px solid var(--stroke);
    color: var(--text);
    width: 48px;
    height: 48px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.2s ease;
  }
  .tetris-page .control-btn:active,
  .tetris-page .action-btn:active {
    transform: scale(0.95);
  }
  .tetris-page .action-btn {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, rgba(45,255,149,.32), rgba(45,255,149,.18));
    color: var(--text);
    border: none;
    box-shadow: 0 8px 20px rgba(45, 255, 149, 0.30);
  }
  .tetris-page .keyboard-hint {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
    text-align: center;
  }
  .tetris-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 10, 20, 0.55);
    align-items: center;
    justify-content: center;
    z-index: 1200;
    padding: 16px;
  }
  .tetris-modal__content {
    background: var(--panel);
    padding: 20px;
    border-radius: 12px;
    width: 100%;
    max-width: 360px;
    box-shadow: var(--shadow);
    border: 1px solid var(--stroke);
    color: var(--text);
  }
  .tetris-modal__content h2 {
    margin: 0 0 12px;
    font-size: 1.1rem;
    color: var(--text);
  }
  .tetris-modal__content .field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
  }
  .tetris-modal__content input {
    border: 1px solid var(--stroke);
    border-radius: 8px;
    padding: 10px;
    font-size: 0.95rem;
    background: rgba(0,0,0,0.22);
    color: var(--text);
  }
  .tetris-modal__actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 4px;
  }
  .tetris-modal__actions--stack {
    flex-direction: column;
    align-items: stretch;
  }
  .tetris-modal__note {
    color: var(--muted);
    font-size: 0.95rem;
    margin: 8px 0 14px;
  }
  @media (max-width: 680px) {
    .tetris-page .game-card {
      padding: 14px;
    }
    .tetris-page .game-header {
      flex-direction: column;
      align-items: flex-start;
    }
    .tetris-page canvas {
      width: 100%;
      max-width: 320px;
      height: auto;
    }
    .tetris-page .keyboard-hint {
      text-align: left;
    }
  }
  @media (hover: none) and (pointer: coarse) {
    .tetris-page .mobile-controls {
      display: flex;
    }
    .tetris-page .keyboard-hint {
      display: none;
    }
  }