/* styles/toc.css - 目次ページ専用スタイル */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  background: var(--bg-gradient-primary, linear-gradient(135deg, #2E7D6B 0%, #1B5E5A 100%));
  min-height: 100vh;
  color: var(--text-primary, #333);
  transition: background-color 0.3s ease, color 0.3s ease;
}

[data-theme="dark"] body {
  background: var(--bg-gradient-dark, linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%));
}

.app-header {
  background: var(--header-gradient, linear-gradient(135deg, #2E7D6B 0%, #1B5E5A 100%));
  color: white !important;
  padding: 16px 20px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px var(--shadow-medium, rgba(0, 0, 0, 0.1));
  transition: background-color 0.3s ease;
}

[data-theme="dark"] .app-header {
  background: var(--header-gradient, linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%));
}

/* ヘッダー内の全要素を白文字に */
.app-header,
.app-header *,
.header-content,
.header-content *,
.header-title,
.back-button,
.progress-button {
  color: white !important;
}

.header-content {
  display: flex;
  align-items: center;
  gap: 12px;
}

.back-button {
  background: none;
  border: none;
  font-size: 20px;
  padding: 8px;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s;
  /* 🆕 縦軸位置合わせ */
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  line-height: 1 !important;
  width: 36px !important;
  height: 36px !important;
}

.back-button:hover {
  background: rgba(255, 255, 255, 0.2);
}

.header-title {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  /* 🆕 縦軸位置合わせ */
  line-height: 1.2 !important;
  margin: 0 !important;
  display: flex !important;
  align-items: center !important;
}

.progress-button {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  padding: 8px 12px;
  border-radius: 15px;
  font-size: 12px;
  cursor: pointer;
  font-weight: 500;
  transition: background-color 0.2s;
  /* 🆕 縦軸位置合わせ */
  display: flex !important;
  align-items: center !important;
  line-height: 1 !important;
}

.progress-button:hover {
  background: rgba(255, 255, 255, 0.3);
}

.main-content {
  padding: 20px;
  max-width: 100%;
  background: transparent;
}

.user-type-display {
  background: var(--bg-secondary, white);
  border-radius: 15px;
  padding: 16px 20px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 4px 15px var(--shadow-medium, rgba(0, 0, 0, 0.1));
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.user-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #3aa100, #4caf50);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
}

.user-icon.educator {
  background: linear-gradient(135deg, #ff9800, #f57c00);
}

.user-icon.both {
  background: linear-gradient(135deg, #2196f3, #1976d2);
}

.user-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary, #333);
  margin-bottom: 2px;
  transition: color 0.3s ease;
}

.user-info p {
  font-size: 12px;
  color: var(--text-secondary, #666);
  transition: color 0.3s ease;
}

.change-button {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border-primary, #ddd);
  color: var(--text-secondary, #666);
  padding: 6px 12px;
  border-radius: 12px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.change-button:hover {
  background: var(--bg-tertiary, #f5f5f5);
  border-color: var(--border-secondary, #bbb);
}

.overall-progress {
  background: var(--bg-secondary, white);
  border-radius: 15px;
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: 0 4px 15px var(--shadow-medium, rgba(0, 0, 0, 0.1));
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.progress-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary, #333);
  transition: color 0.3s ease;
}

.progress-percentage {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-success, #3aa100);
  transition: color 0.3s ease;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--border-secondary, #f0f0f0);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
  transition: background-color 0.3s ease;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-success), var(--color-success));
  width: 0%;
  border-radius: 4px;
  transition: width 0.3s ease;
}

.progress-stats {
  display: flex;
  gap: 20px;
  font-size: 12px;
  color: var(--text-secondary, #666);
  transition: color 0.3s ease;
}

.last-study-info {
  background: var(--warning-light, #fff3e0);
  border: 2px solid var(--accent-warning, #ff9800);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 20px;
  display: none;
  box-shadow: 0 2px 8px rgba(255, 152, 0, 0.15);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] .last-study-info {
  background: rgba(255, 152, 0, 0.1);
  border-color: var(--accent-warning, #ffb74d);
}

.last-study-info.show {
  display: block;
}

.last-study-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--warning-dark, #e65100);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.3s ease;
}

.last-study-content {
  font-size: 13px;
  color: var(--text-primary, #333);
  line-height: 1.4;
  font-weight: 500;
  transition: color 0.3s ease;
}

.chapters-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: 100px;
}

.chapter-header-card {
  background: var(--bg-secondary, white);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 4px 15px var(--shadow-medium, rgba(0, 0, 0, 0.1));
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.chapter-header-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--shadow-heavy, rgba(0, 0, 0, 0.15));
}

.chapter-title-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.chapter-number {
  color: white;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 20px;
  min-width: 80px;
  text-align: center;
}

.chapter-1 .chapter-number {
  background: linear-gradient(135deg, var(--chapter1-primary, #3aa100), var(--chapter1-secondary, #4caf50));
}
.chapter-2 .chapter-number {
  background: linear-gradient(135deg, var(--chapter2-primary, #0075c1), var(--chapter2-secondary, #0066a8));
}
.chapter-3 .chapter-number {
  background: linear-gradient(135deg, var(--chapter3-primary, #ff9800), var(--chapter3-secondary, #f57c00));
}
.chapter-4 .chapter-number {
  background: linear-gradient(135deg, var(--chapter4-primary, #f44336), var(--chapter4-secondary, #d32f2f));
}
.chapter-5 .chapter-number {
  background: linear-gradient(135deg, var(--chapter5-primary, #9c27b0), var(--chapter5-secondary, #7b1fa2));
}

.chapter-titlex {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary, #333);
  flex: 1;
  transition: color 0.3s ease;
}

.chapter-status-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  background: var(--border-primary, #e9ecef);
  color: var(--text-tertiary, #999);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.chapter-description {
  font-size: 14px;
  color: var(--text-secondary, #666);
  margin-bottom: 16px;
  line-height: 1.5;
  transition: color 0.3s ease;
}

.chapter-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text-secondary, #666);
  transition: color 0.3s ease;
}

.chapter-progress {
  background: var(--bg-tertiary, #f8f9fa);
  border-radius: 8px;
  padding: 12px;
  transition: background-color 0.3s ease;
}

.progress-text {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin-bottom: 4px;
  color: var(--text-primary, #333);
  transition: color 0.3s ease;
}

.mini-progress-bar {
  width: 100%;
  height: 4px;
  background: var(--border-primary, #e9ecef);
  border-radius: 2px;
  overflow: hidden;
  transition: background-color 0.3s ease;
}

.mini-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-success), var(--color-success));
  border-radius: 2px;
  transition: width 0.3s ease;
}

.sub-items-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 16px;
  padding: 16px;
  background: var(--bg-tertiary, #f8f9fa);
  border-radius: 8px;
  transition: background-color 0.3s ease;
}

.sub-item-minimal {
  background: var(--bg-secondary, white);
  border: 1px solid var(--border-primary, #e9ecef);
  border-radius: 8px;
  padding: 12px 16px;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sub-item-minimal:hover {
  border-color: var(--accent-primary, #2E7D6B);
  background: var(--accent-light, #f0f8ff);
  transform: translateX(4px);
}

[data-theme="dark"] .sub-item-minimal:hover {
  background: rgba(79, 184, 255, 0.1);
}

.sub-item-mini-number {
  background: var(--border-primary, #e9ecef);
  color: var(--text-secondary, #666);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 10px;
  min-width: 45px;
  text-align: center;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.sub-item-mini-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary, #333);
  flex: 1;
  transition: color 0.3s ease;
}

.sub-item-mini-status {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 600;
  background: var(--border-primary, #e9ecef);
  color: var(--text-tertiary, #999);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.action-buttons {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  gap: 12px;
  z-index: 50;
  background: var(--bg-secondary, white);
  padding: 16px 20px;
  border-top: 1px solid var(--border-primary, #e9ecef);
  box-shadow: 0 -2px 10px var(--shadow-medium, rgba(0, 0, 0, 0.1));
  backdrop-filter: blur(10px);
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.action-button {
  flex: 1;
  padding: 16px;
  border: none;
  border-radius: 25px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.continue-button {
  background: linear-gradient(135deg, var(--color-success), var(--color-success));
  color: white;
}

.continue-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--shadow-medium);
}

.test-button {
  background: linear-gradient(135deg, var(--color-warning), var(--color-warning));
  color: white;
}

.test-button:disabled {
  background: var(--border-primary, #ccc);
  cursor: not-allowed;
}

.test-button:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--shadow-medium);
}

/* PC表示時のみ */
@media (min-width: 769px) {
  body {
    background: var(--bg-primary, #f5f5f7);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 20px 20px 20px; /* 上だけ0に、左右下は20px */
  }

  [data-theme="dark"] body {
    background: var(--bg-primary, #121212);
  }

  .app-header,
  .main-content {
    max-width: 768px;
    width: 100%;
    margin: 0 auto;
  }

  .main-content {
    background: var(--bg-gradient-primary, linear-gradient(135deg, #2E7D6B 0%, #1B5E5A 100%));
    min-height: calc(100vh - 140px);
    border-radius: 0;
    box-shadow: 0 4px 20px var(--shadow-medium, rgba(0, 0, 0, 0.1));
    margin-bottom: 20px;
  }

  [data-theme="dark"] .main-content {
    background: var(--bg-gradient-dark, linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%));
  }

  .action-buttons {
    max-width: 768px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%; /* 768px → 100% に変更 */
  }

  .chapter-header-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px var(--shadow-heavy, rgba(0, 0, 0, 0.2));
  }

  .user-type-display:hover,
  .overall-progress:hover,
  .last-study-info:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-heavy, rgba(0, 0, 0, 0.15));
  }
}

@media (min-width: 1400px) {
  .app-header,
  .main-content {
    max-width: 1200px;
  }

  .action-buttons {
    max-width: 1200px;
    width: 100%; /* 1200px → 100% に変更 */
  }
}

/* モーダル関連はtoc.phpの<style>から移動 */
.reset-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--overlay, rgba(0, 0, 0, 0.6));
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.reset-modal.show {
  display: flex;
}

.reset-modal-content {
  background: var(--bg-secondary, white);
  border-radius: 15px;
  padding: 0;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 10px 30px var(--shadow-heavy, rgba(0, 0, 0, 0.3));
  animation: modalSlideIn 0.3s ease-out;
  transition: background-color 0.3s ease;
}

@keyframes modalSlideIn {
  from { opacity: 0; transform: translateY(-20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.reset-modal-header {
  padding: 25px 25px 20px 25px;
  text-align: center;
  border-bottom: 1px solid var(--border-primary, #eee);
  transition: border-color 0.3s ease;
}

.reset-modal-header h3 {
  margin: 0 0 8px 0;
  font-size: 20px;
  color: var(--text-primary, #333);
  transition: color 0.3s ease;
}

.reset-modal-header p {
  margin: 0;
  color: var(--text-secondary, #666);
  font-size: 14px;
  transition: color 0.3s ease;
}

.reset-options {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.reset-option {
  border: 2px solid var(--border-primary, #e9ecef);
  border-radius: 12px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: flex-start;
  gap: 15px;
  position: relative;
  background: var(--bg-secondary, white);
}

.reset-option:hover {
  border-color: var(--accent-primary, #007bff);
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.15);
  transform: translateY(-2px);
}

.reset-option.recommended {
  border-color: var(--accent-success, #28a745);
  background: var(--success-light, linear-gradient(135deg, #f8fff9 0%, #e8f5e8 100%));
}

.reset-option.recommended:hover {
  border-color: var(--accent-success, #28a745);
  box-shadow: 0 4px 12px rgba(40, 167, 69, 0.2);
}

.reset-option.danger {
  border-color: var(--accent-error, #dc3545);
  background: var(--error-light, linear-gradient(135deg, #fff8f8 0%, #ffe8e8 100%));
}

.reset-option.danger:hover {
  border-color: var(--accent-error, #dc3545);
  box-shadow: 0 4px 12px rgba(220, 53, 69, 0.2);
}

[data-theme="dark"] .reset-option.recommended {
  background: rgba(40, 167, 69, 0.1);
}

[data-theme="dark"] .reset-option.danger {
  background: rgba(220, 53, 69, 0.1);
}

.reset-icon { font-size: 24px; flex-shrink: 0; width: 40px; text-align: center; }
.reset-content { flex: 1; }

.reset-content h4 {
  margin: 0 0 5px 0;
  font-size: 16px;
  color: var(--text-primary, #333);
  transition: color 0.3s ease;
}

.reset-description {
  margin: 0 0 10px 0;
  color: var(--text-secondary, #666);
  font-size: 13px;
  transition: color 0.3s ease;
}

.reset-details { display: flex; flex-direction: column; gap: 4px; }
.reset-details span { font-size: 12px; padding: 2px 0; }
.reset-details .keep { color: var(--accent-success, #28a745); }
.reset-details .remove { color: var(--accent-error, #dc3545); }

.recommended-badge {
  position: absolute; top: -8px; right: 15px;
  background: var(--accent-success, #28a745); color: white;
  padding: 4px 8px; border-radius: 4px; font-size: 11px; font-weight: bold;
}

.danger-badge {
  position: absolute; top: -8px; right: 15px;
  background: var(--accent-error, #dc3545); color: white;
  padding: 4px 8px; border-radius: 4px; font-size: 11px; font-weight: bold;
}

.reset-modal-footer {
  padding: 15px 25px 25px 25px; text-align: center;
  border-top: 1px solid var(--border-primary, #eee);
  transition: border-color 0.3s ease;
}

.cancel-btn {
  background: var(--text-secondary, #6c757d); color: white; border: none;
  padding: 10px 30px; border-radius: 8px; cursor: pointer;
  font-size: 14px; transition: background 0.3s ease;
}

.cancel-btn:hover { background: #5a6268; }

@media (max-width: 600px) {
  .reset-modal-content { width: 95%; margin: 10px; }
  .reset-option { padding: 15px; }
  .reset-details { flex-direction: column; }
}

/* ========================================
   🆕 ヘッダー修正（縦軸＋ダークモード色）
======================================== */

/* 縦軸位置合わせ */
.header-content {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
}

.back-button, .progress-button {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  line-height: 1 !important;
}

.header-title {
  line-height: 1.2 !important;
  margin: 0 !important;
  display: flex !important;
  align-items: center !important;
}

/* モバイルでの横スクロール防止20250828 */
html, body {
  overflow-x: hidden !important;
}

@media (max-width: 768px) {
  /* モバイル時の横スクロール防止 */
  .action-buttons {
    width: 100vw;
    max-width: 100vw;
    left: 0;
    right: 0;
    box-sizing: border-box;
    overflow-x: hidden;
  }
  
  /* 特定の問題要素のみに制限 */
  .main-content,
  .user-type-display,
  .overall-progress,
  .last-study-info,
  .chapter-header-card {
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  
  /* テキスト要素の改行対応 */
  b, strong, span {
    word-wrap: break-word !important;
    max-width: 100% !important;
  }
}