/* ===== Responsive Styles ===== */

/* モバイルメニュートグル */
.mobile-menu-toggle {
  display: none;
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1001;
  background: #667eea;
  color: white;
  border: none;
  border-radius: 8px;
  width: 48px;
  height: 48px;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(102, 126, 234, 0.3);
  transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
  background: #5568d3;
  transform: scale(1.05);
}

.mobile-menu-toggle:active {
  transform: scale(0.95);
}

/* タブレット */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .app-container {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 250px;
    z-index: 1000;
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  /* オーバーレイ */
  .sidebar.open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 250px;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
  }

  .main-content {
    padding: 20px;
  }

  .app-header {
    padding: 20px;
  }

  .app-header h1 {
    font-size: 1.5rem;
  }

  .quiz-header {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }

  .score-info {
    flex-direction: column;
    gap: 5px;
  }
}

/* モバイル */
@media (max-width: 480px) {
  .main-content {
    padding: 15px;
  }

  .quiz-card {
    padding: 20px;
  }

  .verb-question .base-form {
    font-size: 2rem;
  }

  .choice-question .prompt,
  .reorder-question .prompt {
    font-size: 1.1rem;
    padding: 15px;
  }

  .sentence-template {
    font-size: 1.1rem;
  }

  .inline-input {
    font-size: 1rem;
    padding: 4px 8px;
  }

  .quiz-actions {
    flex-direction: column;
  }

  .quiz-actions .btn {
    width: 100%;
  }

  .completion-screen h2 {
    font-size: 1.8rem;
  }

  .completion-stats .accuracy {
    font-size: 1.5rem;
  }

  /* テーブルをスクロール可能に */
  .incorrect-table {
    display: block;
    overflow-x: auto;
  }
}

/* 印刷用 */
@media print {
  .sidebar,
  .quiz-actions,
  .btn {
    display: none;
  }

  .app-container {
    grid-template-columns: 1fr;
  }

  .main-content {
    padding: 20px;
  }
}