/**
 * VKC Item メソッド逆引き辞書 - スタイルシート
 *
 * カラーパレット:
 * - 背景: #f7fafd (3段階: primary/secondary/tertiary)
 * - ボーダー: #e2e7e7
 * - テキスト（3段階）:
 *   - Primary: #003672（メインテキスト）
 *   - Secondary: #3a5a7c（補足説明）
 *   - Muted: #6b7d94（メタ情報・ヒント）
 * - アクセント: #003672
 */

/* ===== CSS変数定義 ===== */
:root {
  --bg-primary: #f7fafd;
  --bg-secondary: #fff;
  --bg-tertiary: #f0f4f8;
  --border-color: #e2e7e7;
  --text-primary: #003672;
  --text-secondary: #3a5a7c;  /* 補足説明（視認性向上） */
  --text-muted: #6b7d94;      /* メタ情報・ヒント */
  --accent-color: #003672;
  --accent-hover: #002855;
  --warning-color: #e67e22;
  --info-color: #3498db;
  --tip-color: #27ae60;
  --shadow-color: rgba(0,54,114,0.1);
}

/* ダークモード変数 */
[data-theme="dark"] {
  --bg-primary: #1a1d23;
  --bg-secondary: #2d323b;
  --bg-tertiary: #363c47;
  --border-color: #404854;
  --text-primary: #e8ecf1;
  --text-secondary: #b8c4d4;  /* 補足説明（視認性向上） */
  --text-muted: #8a96a8;      /* メタ情報・ヒント */
  --accent-color: #4a9eff;
  --accent-hover: #6bb3ff;
  --shadow-color: rgba(0,0,0,0.3);
}

/* ===== リセット・基本設定 ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.material-icons {
  font-family: 'Material Icons';
  font-weight: normal;
  font-style: normal;
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  padding: 20px;
  transition: background 0.3s, color 0.3s;
}

/* ===== コンテナ ===== */
.container {
  max-width: 1400px;
  margin: 0 auto;
}

/* ===== ヘッダー ===== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

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

/* ===== タイトル ===== */
h1 {
  color: var(--text-primary);
  font-size: 1.6rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

h1 .material-icons {
  color: var(--text-secondary);
  font-size: 1.8rem;
}

/* ===== ダークモードトグル ===== */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 6px 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.theme-toggle:hover {
  border-color: var(--accent-color);
}

.theme-toggle .material-icons {
  font-size: 1.2rem;
  color: var(--text-secondary);
}

.theme-toggle-switch {
  width: 40px;
  height: 22px;
  background: var(--border-color);
  border-radius: 11px;
  position: relative;
  transition: background 0.3s;
}

.theme-toggle-switch::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  background: var(--bg-secondary);
  border-radius: 50%;
  top: 2px;
  left: 2px;
  transition: transform 0.3s;
}

[data-theme="dark"] .theme-toggle-switch {
  background: var(--accent-color);
}

[data-theme="dark"] .theme-toggle-switch::after {
  transform: translateX(18px);
}

/* ===== お気に入りボタン ===== */
.favorites-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.favorites-toggle:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.favorites-toggle.active {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}

.favorites-toggle .material-icons {
  font-size: 1rem;
}

.favorites-count {
  background: var(--bg-tertiary);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 600;
}

.favorites-toggle.active .favorites-count {
  background: rgba(255,255,255,0.2);
}

/* ===== マトリクス表示トグル ===== */
.matrix-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.matrix-toggle:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.matrix-toggle .material-icons {
  font-size: 1rem;
}

/* ===== 言語切替トグル ===== */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.lang-toggle:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.lang-toggle .material-icons {
  font-size: 1rem;
}

.lang-label {
  font-weight: 600;
  min-width: 20px;
  text-align: center;
}

/* ===== よく使うセクション（ページ下部） ===== */
.frequent-section {
  margin-top: 32px;
  margin-bottom: 16px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
}

.frequent-section.hidden {
  display: none;
}

.frequent-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
}

.frequent-header .material-icons {
  font-size: 1.1rem;
  color: var(--warning-color);
}

.frequent-methods {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.frequent-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: 'SF Mono', 'Consolas', monospace;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s;
}

.frequent-chip:hover {
  border-color: var(--accent-color);
  background: var(--accent-color);
  color: #fff;
}

/* ===== 履歴セクション（ページ下部） ===== */
.history-section {
  margin-top: 16px;
  margin-bottom: 32px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
}

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

.history-title {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
}

.history-title .material-icons {
  font-size: 1.1rem;
  color: var(--info-color);
}

.history-clear {
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 4px 10px;
  font-size: 0.7rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.history-clear:hover {
  border-color: var(--warning-color);
  color: var(--warning-color);
}

.history-clear .material-icons {
  font-size: 0.9rem;
}

.history-methods {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.history-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: 'SF Mono', 'Consolas', monospace;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s;
}

.history-chip:hover {
  border-color: var(--info-color);
  background: var(--info-color);
  color: #fff;
}

/* ===== ItemType 一体型タブ ===== */
.itemtype-tabs-container {
  margin-bottom: 20px;
}

.itemtype-tabs-header {
  margin-bottom: 8px;
}

.itemtype-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.itemtype-label .material-icons {
  font-size: 1.1rem;
}

.itemtype-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: none;
}

.itemtype-tab {
  padding: 10px 20px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-bottom: none;
  border-radius: 12px 12px 0 0;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s;
  margin-right: -1px;
  position: relative;
  z-index: 1;
}

.itemtype-tab:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.itemtype-tab.active {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
  z-index: 2;
}

.itemtype-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0 12px 12px 12px;
  padding: 16px;
  margin-top: -1px;
}

.itemtype-content .filter-section {
  margin-bottom: 0;
}

.itemtype-content .filter-section:first-child .filter-label {
  margin-top: 0;
}

/* ===== フィルターセクション ===== */
.filter-section {
  margin-bottom: 16px;
}

.filter-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.filter-label .material-icons {
  font-size: 1rem;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.filter-btn .material-icons {
  font-size: 0.95rem;
  opacity: 0.7;
}

.filter-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.filter-btn:hover .material-icons {
  opacity: 1;
}

.filter-btn.active {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
  font-weight: 600;
}

.filter-btn.active .material-icons {
  opacity: 1;
}

.filter-count {
  font-size: 0.7rem;
  opacity: 0.7;
  font-weight: 500;
}

.filter-btn.active .filter-count {
  opacity: 0.9;
}

/* フィルターコントロール（難易度＋リセット） */
.filter-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  flex-wrap: wrap;
  gap: 12px;
}

/* リセットボタン */
.reset-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.reset-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.reset-btn .material-icons {
  font-size: 1rem;
}

/* ===== 検索・ソート統合エリア ===== */
.search-sort-area {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.search-section {
  flex: 1;
  min-width: 280px;
}

.search-input-container {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 1.2rem !important;
  pointer-events: none;
}

.search-box {
  width: 100%;
  padding: 12px 20px 12px 44px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.2s;
}

.search-box:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--shadow-color);
}

.search-box::placeholder {
  color: var(--text-muted);
}

.search-targets {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  color: var(--text-secondary);
  margin-top: 6px;
  padding-left: 4px;
}

.search-targets .material-icons {
  font-size: 0.85rem;
}

.sort-section {
  display: flex;
  align-items: center;
  padding-top: 4px;
}

.sort-select {
  padding: 10px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.sort-select:hover {
  border-color: var(--accent-color);
}

.sort-select:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px var(--shadow-color);
}

/* ===== フィルタ状態・件数表示 ===== */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border-radius: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.active-filters {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.8rem;
}

.active-filter-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: var(--accent-color);
  color: #fff;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
}

.active-filter-tag .material-icons {
  font-size: 0.9rem;
  cursor: pointer;
  opacity: 0.8;
}

.active-filter-tag .material-icons:hover {
  opacity: 1;
}

.no-filter-text {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.stats {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
}

/* ===== メソッドグリッド ===== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 12px;
}

/* ===== メソッドカード ===== */
.method-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  transition: all 0.2s;
  cursor: pointer;
  position: relative;
  box-shadow: 0 1px 3px var(--shadow-color);
}

.method-card:hover {
  border-color: var(--accent-color);
  box-shadow: 0 4px 12px var(--shadow-color);
  transform: translateY(-2px);
}

.method-card.hidden {
  display: none;
}

.method-name {
  color: var(--text-primary);
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 1.1rem;
  font-weight: 700;
  flex: 1;
  word-break: break-all;
}

.method-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}

.method-card-hint {
  position: absolute;
  bottom: 10px;
  right: 12px;
  font-size: 0.7rem;
  color: var(--accent-color);
  background: var(--bg-tertiary);
  padding: 4px 8px;
  border-radius: 4px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s, transform 0.2s;
  display: flex;
  align-items: center;
  gap: 4px;
}

.method-card-hint::before {
  content: "→";
  font-weight: bold;
}

.method-card:hover .method-card-hint {
  opacity: 1;
  transform: translateY(0);
}

/* タイトル行（アイコン＋タイトル＋ブックマーク） */
.method-title-row {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-bottom: 6px;
}

/* カテゴリーアイコン（タイトル横） */
.method-category-icon {
  font-size: 1.1rem;
  color: var(--accent-color);
  opacity: 0.8;
  flex-shrink: 0;
  margin-top: 2px;
}

/* お気に入りボタン（ブックマーク） */
.favorite-btn {
  background: none;
  border: none;
  padding: 2px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  opacity: 0.5;
}

.favorite-btn:hover {
  color: var(--accent-color);
  opacity: 1;
}

.favorite-btn.active {
  color: var(--accent-color);
  opacity: 1;
}

.favorite-btn .material-icons {
  font-size: 1.1rem;
}

.method-sig {
  color: var(--text-primary);
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.78rem;
  font-weight: 500;
  margin-bottom: 8px;
  word-break: break-all;
  background: var(--bg-tertiary);
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  opacity: 0.9;
}

.method-desc {
  color: var(--text-primary);
  font-size: 0.78rem;
  line-height: 1.5;
  margin-bottom: 8px;
  opacity: 0.8;
}

.method-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  flex: 1;
}

.method-category {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 0.65rem;
  padding: 3px 8px;
  border-radius: 12px;
  font-weight: 500;
  border: 1px solid var(--border-color);
}

.method-category .material-icons {
  font-size: 0.75rem;
  opacity: 0.7;
}

.method-components {
  color: var(--text-muted);
  font-size: 0.65rem;
}

/* ===== ツールチップ ===== */
.tooltip {
  position: fixed;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  max-width: 450px;
  z-index: 900;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  box-shadow: 0 8px 30px var(--shadow-color);
}

.tooltip.show {
  opacity: 1;
}

.tooltip-title {
  color: var(--text-primary);
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.tooltip-code {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 12px;
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.75rem;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 200px;
  overflow: hidden;
}

.tooltip-hint {
  color: var(--text-muted);
  font-size: 0.7rem;
  margin-top: 10px;
  text-align: right;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.tooltip-hint .material-icons {
  font-size: 0.9rem;
}

/* ===== ポップアップオーバーレイ ===== */
.popup-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(2px);
}

.popup-overlay.show {
  display: flex;
}

/* ===== ポップアップ本体 ===== */
.popup {
  background: var(--bg-secondary);
  border-radius: 16px;
  max-width: 800px;
  width: 90%;
  max-height: 85vh;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  display: flex;
  flex-direction: column;
}

.popup-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 16px 20px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.popup-header-main {
  flex: 1;
}

.popup-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.popup-category-icon {
  font-size: 1.4rem;
  color: var(--accent-color);
}

.popup-title {
  color: var(--text-primary);
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 1.4rem;
  font-weight: 700;
}

.popup-has-code {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  color: var(--tip-color);
  background: rgba(39, 174, 96, 0.1);
  padding: 3px 8px;
  border-radius: 10px;
  font-weight: 500;
}

.popup-has-code .material-icons {
  font-size: 0.85rem;
}

.popup-sig {
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  padding: 6px 10px;
  border-radius: 6px;
  display: inline-block;
}

.popup-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.popup-doc-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent-color);
  color: #fff;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s;
}

.popup-doc-link:hover {
  background: var(--accent-hover);
}

.popup-doc-link .material-icons {
  font-size: 1.1rem;
}

.popup-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  border-radius: 8px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.popup-close .material-icons {
  font-size: 1.3rem;
}

.popup-close:hover {
  background: var(--border-color);
  color: var(--text-primary);
}

.popup-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.popup-section {
  margin-bottom: 16px;
}

.popup-section:last-child {
  margin-bottom: 0;
}

.popup-section-title {
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.popup-section-title .material-icons {
  font-size: 1rem;
}

/* 説明セクション */
.popup-desc-section {
  background: var(--bg-tertiary);
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 16px;
}

.popup-purpose {
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--accent-color);
}

.popup-detail {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
  padding-left: 12px;
  border-left: 3px solid var(--border-color);
}

.popup-detail:empty {
  display: none;
}

/* コードコピーボタン */
.popup-code-copy {
  margin-left: auto;
  background: var(--accent-color);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 4px 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  transition: all 0.2s;
}

.popup-code-copy:hover {
  background: var(--accent-hover);
}

.popup-code-copy .material-icons {
  font-size: 0.9rem;
}

/* 警告・注意点表示 */
.popup-warning {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 8px;
  margin-top: 12px;
}

.popup-warning.warning {
  background: rgba(230, 126, 34, 0.1);
  border: 1px solid rgba(230, 126, 34, 0.3);
}

.popup-warning.info {
  background: rgba(52, 152, 219, 0.1);
  border: 1px solid rgba(52, 152, 219, 0.3);
}

.popup-warning.tip {
  background: rgba(39, 174, 96, 0.1);
  border: 1px solid rgba(39, 174, 96, 0.3);
}

.popup-warning .material-icons {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.popup-warning.warning .material-icons {
  color: var(--warning-color);
}

.popup-warning.info .material-icons {
  color: var(--info-color);
}

.popup-warning.tip .material-icons {
  color: var(--tip-color);
}

.popup-warning-text {
  font-size: 0.85rem;
  line-height: 1.5;
}

/* 引数詳細 */
.popup-args {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.popup-arg {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
}

.popup-arg:last-child {
  border-bottom: none;
}

.popup-arg-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.popup-arg-name {
  font-family: 'SF Mono', 'Consolas', monospace;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.85rem;
}

.popup-arg-type {
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.7rem;
  padding: 2px 6px;
  background: var(--accent-color);
  color: #fff;
  border-radius: 4px;
}

.popup-arg-default {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.popup-arg-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.popup-arg-example {
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.75rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  padding: 4px 8px;
  border-radius: 4px;
  display: inline-block;
}

/* 関連メソッド */
.popup-related {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.popup-related-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.popup-related-item::after {
  content: "→";
  position: absolute;
  right: 14px;
  color: var(--text-secondary);
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
}

.popup-related-item:hover {
  border-color: var(--accent-color);
  background: var(--accent-color);
  transform: translateX(4px);
}

.popup-related-item:hover::after {
  opacity: 1;
  transform: translateX(4px);
}

.popup-related-item:hover .popup-related-name,
.popup-related-item:hover .popup-related-desc {
  color: #fff;
}

.popup-related-name {
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-color);
  min-width: 140px;
  transition: color 0.2s;
}

.popup-related-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  flex: 1;
  transition: color 0.2s;
}

/* 旧チップスタイル（互換性用） */
.popup-related-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.75rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.popup-related-chip:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.popup-code {
  background: #1e1e1e;
  border: 1px solid #333;
  border-radius: 10px;
  padding: 16px 18px;
  font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
  font-size: 0.85rem;
  color: #d4d4d4;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.7;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* シンタックスハイライト */
.hl-keyword {
  color: #c678dd;
  font-weight: 600;
}

.hl-string {
  color: #98c379;
}

.hl-comment {
  color: #7f848e;
  font-style: italic;
}

.hl-number {
  color: #d19a66;
}

.hl-type {
  color: #e5c07b;
}

.hl-function {
  color: #61afef;
}

/* ダークモードでのハイライト調整 */
[data-theme="dark"] .hl-keyword {
  color: #c678dd;
}

[data-theme="dark"] .hl-string {
  color: #98c379;
}

[data-theme="dark"] .hl-comment {
  color: #5c6370;
}

[data-theme="dark"] .hl-number {
  color: #d19a66;
}

[data-theme="dark"] .hl-type {
  color: #e5c07b;
}

[data-theme="dark"] .hl-function {
  color: #61afef;
}

.popup-footer {
  padding: 16px 24px;
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-shrink: 0;
}

/* ===== ポップアップボタン ===== */
.popup-btn {
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.popup-btn .material-icons {
  font-size: 1rem;
}

.popup-btn-primary {
  background: var(--accent-color);
  color: #fff;
}

.popup-btn-primary:hover {
  background: var(--accent-hover);
}

.popup-btn-secondary {
  background: var(--text-secondary);
  color: #fff;
}

.popup-btn-secondary:hover {
  opacity: 0.9;
}

.popup-btn-tertiary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.popup-btn-tertiary:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

.popup-btn-share {
  background: var(--tip-color);
  color: #fff;
}

.popup-btn-share:hover {
  opacity: 0.9;
}

/* ===== クリックパーティクル ===== */
.click-particle {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-color);
  opacity: 0.8;
  animation: particle-fly 0.6s ease-out forwards;
}

.click-particle:nth-child(odd) {
  background: var(--tip-color);
}

@keyframes particle-fly {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 0.8;
  }
  100% {
    transform: translate(var(--dx), var(--dy)) scale(0);
    opacity: 0;
  }
}

/* ===== コピー成功通知 ===== */
.copy-success {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--accent-color);
  color: #fff;
  padding: 14px 24px;
  border-radius: 8px;
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 1100;
  box-shadow: 0 4px 12px var(--shadow-color);
  display: flex;
  align-items: center;
  gap: 6px;
}

.copy-success .material-icons {
  font-size: 1.1rem;
}

.copy-success.show {
  opacity: 1;
}

/* ===== 検索結果なし ===== */
.no-results {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
}

.no-results .material-icons {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

/* ===== マトリクス表示 ===== */
.matrix-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(2px);
}

.matrix-overlay.show {
  display: flex;
}

.matrix-container {
  background: var(--bg-secondary);
  border-radius: 16px;
  max-width: 95vw;
  max-height: 90vh;
  overflow: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.matrix-header {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  z-index: 10;
}

.matrix-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.matrix-title .material-icons {
  color: var(--text-secondary);
}

.matrix-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: all 0.2s;
}

.matrix-close:hover {
  background: var(--border-color);
  color: var(--text-primary);
}

.matrix-table-wrapper {
  padding: 16px;
  overflow: auto;
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
}

.matrix-table th,
.matrix-table td {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  text-align: center;
}

.matrix-table th {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 600;
  position: sticky;
  top: 0;
}

.matrix-table th:first-child {
  text-align: left;
  min-width: 180px;
}

.matrix-table td:first-child {
  text-align: left;
  font-family: 'SF Mono', 'Consolas', monospace;
  font-weight: 500;
  background: var(--bg-tertiary);
  position: sticky;
  left: 0;
}

.matrix-table .supported {
  background: rgba(39, 174, 96, 0.2);
  color: #27ae60;
}

.matrix-table .not-supported {
  background: var(--bg-primary);
  color: var(--border-color);
}

/* ===== 補足トピックセクション ===== */
.topics-section {
  margin-top: 32px;
  padding: 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
}

.topics-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.topics-header .material-icons {
  color: var(--accent-color);
  font-size: 1.2rem;
}

.topics-subtitle {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 8px;
}

.topics-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.topic-chip {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 14px 18px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
  min-width: 200px;
  max-width: 280px;
}

.topic-chip:hover {
  border-color: var(--accent-color);
  background: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

.topic-chip:hover .material-icons,
.topic-chip:hover .topic-chip-title,
.topic-chip:hover .topic-chip-summary {
  color: #fff;
}

.topic-chip .material-icons {
  font-size: 1.3rem;
  color: var(--accent-color);
  transition: color 0.2s;
}

.topic-chip-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color 0.2s;
}

.topic-chip-summary {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
  transition: color 0.2s;
}

/* ===== ポップアップ内の関連知識セクション ===== */
.popup-knowledge-section {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.popup-knowledge-toggle {
  cursor: pointer;
  background: var(--bg-tertiary);
  padding: 12px 16px !important;
  margin: 0 !important;
  transition: background 0.2s;
}

.popup-knowledge-toggle:hover {
  background: var(--border-color);
}

.popup-knowledge-arrow {
  margin-left: auto;
  transition: transform 0.2s;
}

.popup-knowledge-section.expanded .popup-knowledge-arrow {
  transform: rotate(180deg);
}

.popup-knowledge-content {
  display: none;
  padding: 0;
}

.popup-knowledge-section.expanded .popup-knowledge-content {
  display: block;
}

.popup-knowledge-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  transition: background 0.2s;
  border-top: 1px solid var(--border-color);
}

.popup-knowledge-link:hover {
  background: var(--bg-tertiary);
}

.popup-knowledge-link .material-icons:first-child {
  font-size: 1.2rem;
  color: var(--accent-color);
}

.popup-knowledge-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.popup-knowledge-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.popup-knowledge-summary {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.popup-knowledge-arrow-right {
  color: var(--text-muted);
}

/* ===== トピックモーダル ===== */
.topic-modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 1050;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(2px);
}

.topic-modal-overlay.show {
  display: flex;
}

.topic-modal {
  background: var(--bg-secondary);
  border-radius: 16px;
  width: 90%;
  max-width: 700px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  animation: modalSlideIn 0.2s ease-out;
}

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

.topic-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  border-radius: 16px 16px 0 0;
}

.topic-modal-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

.topic-modal-title .material-icons {
  font-size: 1.4rem;
  color: var(--accent-color);
}

.topic-modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: all 0.2s;
}

.topic-modal-close:hover {
  background: var(--border-color);
  color: var(--text-primary);
}

.topic-modal-body {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  min-height: 0;
}

/* トピックモーダル内のMarkdownスタイル */
.topic-modal-body p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.topic-modal-body .topic-h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 24px 0 12px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent-color);
}

.topic-modal-body .topic-h2:first-child {
  margin-top: 0;
}

.topic-modal-body .topic-h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 20px 0 8px 0;
}

.topic-modal-body .inline-code {
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.85em;
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent-color);
}

.topic-modal-body .topic-code {
  background: #1e1e1e;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 14px 16px;
  margin: 12px 0;
  overflow-x: auto;
}

.topic-modal-body .topic-code code {
  font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
  font-size: 0.82rem;
  color: #d4d4d4;
  line-height: 1.6;
  white-space: pre-wrap;
}

.topic-modal-body strong {
  font-weight: 600;
  color: var(--text-primary);
}

.topic-modal-footer {
  padding: 16px 24px;
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-color);
  border-radius: 0 0 16px 16px;
}

.topic-modal-related {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.topic-related-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.topic-related-label .material-icons {
  font-size: 1rem;
}

.topic-related-methods {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.topic-method-chip {
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.75rem;
  padding: 5px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s;
}

.topic-method-chip:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: var(--bg-primary);
}

/* ===== キーボードショートカットヘルプ ===== */
.keyboard-help {
  position: fixed;
  bottom: 24px;
  left: 24px;
  display: flex;
  gap: 12px;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.keyboard-help-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.keyboard-help-item kbd {
  background: var(--bg-secondary);
  padding: 3px 8px;
  border-radius: 4px;
  font-family: monospace;
  border: 1px solid var(--border-color);
  font-size: 0.7rem;
}

/* ===== 印刷用スタイル ===== */
@media print {
  body {
    background: #fff !important;
    color: #000 !important;
    padding: 10px;
  }

  .header-right,
  .theme-toggle,
  .favorites-toggle,
  .matrix-toggle,
  .lang-toggle,
  .keyboard-help,
  .tooltip,
  .popup-overlay,
  .matrix-overlay,
  .copy-success,
  .favorite-btn {
    display: none !important;
  }

  .container {
    max-width: 100%;
  }

  .method-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .method-card {
    break-inside: avoid;
    page-break-inside: avoid;
    border: 1px solid #ccc;
    box-shadow: none;
    padding: 10px;
  }

  .method-card:hover {
    transform: none;
    box-shadow: none;
  }

  .filter-section {
    display: none;
  }

  .search-wrapper {
    display: none;
  }

  .frequent-section {
    display: none;
  }

  h1 {
    font-size: 1.2rem;
    margin-bottom: 16px;
  }

  .method-name {
    font-size: 0.85rem;
  }

  .method-sig {
    font-size: 0.65rem;
  }

  .method-desc {
    font-size: 0.7rem;
  }
}

/* ===== レスポンシブ対応 ===== */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-right {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  h1 {
    font-size: 1.3rem;
  }

  .method-grid {
    grid-template-columns: 1fr;
  }

  .keyboard-help {
    display: none;
  }

  .popup {
    width: 95%;
    max-height: 90vh;
  }

  .matrix-container {
    max-width: 100%;
    max-height: 100%;
    border-radius: 0;
  }
}