/* ================================================================
   九州国立博物館 共通スタイルシート
   ================================================================
   ヘッダー・フッターコンポーネント用の共通CSS
   TailwindCSSと併用
   ================================================================ */

/* ================================================================
   CSS カスタムプロパティ（ブランドカラー）
   ================================================================ */
:root {
  --kyuhaku-primary: #1a63bc;
  --kyuhaku-dark: #0f3d75;
  --kyuhaku-light: #e8f0fa;
  --kyuhaku-primary-rgb: 26, 99, 188;  /* box-shadow alpha用 */

  /* z-index スケール */
  --z-mega-menu: 50;
  --z-header: 100;
  --z-language-dropdown: 110;
  --z-mobile-menu: 200;
  --z-skip-link: 300;
  --z-modal: 300;
  --z-search: 310;
}

/* ================================================================
   カスタム要素のブロック化 + Canvas/Bootstrap 干渉の無力化
   ================================================================ */
site-header,
site-footer {
  display: block;
}

/* ================================================================
   基本設定
   ================================================================ */

/* preflight:false のためブラウザデフォルトのボタンスタイルをリセット */
.header-wrapper button,
.search-overlay button,
.mobile-menu-overlay button {
  border: none !important;
  background: transparent !important;
  -webkit-appearance: none !important;
  appearance: none !important;
}

body {
  /* 1. フォントの厳選：モダンで親しみやすいものを前方に */
  font-family:
    'Inter',
    'Noto Sans JP',
    'Helvetica Neue',
    'Arial',
    'Hiragino Sans',
    sans-serif;

  /* 2. 余白による「柔らかさ」の演出 */
  letter-spacing: 0.05em; /* わずかに広げて可読性を向上 */
  line-height: 1.85;      /* 行間をゆったり取って「物語」を読みやすく */

  /* 3. 視覚的な重みを調整 */
  color: #333;            /* 純粋な黒（#000）を避け、コントラストを和らげる */

  /* レンダリングの最適化（現状維持でOK） */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 見出し・ナビにのみ palt 適用 */
h1, h2, h3, h4,
.main-nav-wrapper a,
.minimal-category-header {
  font-feature-settings: "palt";
  letter-spacing: 0.1em;
}

/* ================================================================
   ヘッダー：トップバー
   ================================================================ */
.top-bar {
  font-size: 13px;
}

.top-bar > div {
  padding-top: 13px;
  padding-bottom: 8px;
}

/* ================================================================
   ヘッダー：メガメニューアニメーション
   ================================================================ */
.mega-menu-trigger {
  position: static;
}

.mega-menu-animate {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  width: 100%;
  background: #ffffff;
  box-shadow: 0 4px 12px -4px rgba(0, 0, 0, 0.06);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out;
  pointer-events: none;
  z-index: var(--z-mega-menu);
}

.mega-menu-trigger.is-open .mega-menu-animate {
  max-height: 800px;
  pointer-events: auto;
  transition: max-height 0.5s ease-in;
}

.mega-menu-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
}

/* メニュー項目のスライドインアニメーション */
@keyframes menuItemSlideIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================================================
   ヘッダー：ミニマルライン メガメニュー中項目スタイル
   ================================================================ */

/* メガメニューグリッドレイアウト */
.mega-grid-2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  max-width: 780px;
  margin: 0 auto;
}

.mega-grid-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  max-width: 960px;
  margin: 0 auto;
}

.mega-card-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 200px));
  gap: 1.25rem;
  justify-content: center;
}

.mega-col {
  padding-left: 0.75rem;
}

/* 列の逆順表示（展示案内・博物館について・ご利用案内） */
.mega-grid-reverse > .mega-col:nth-child(1) { order: 99; }
.mega-grid-reverse > .mega-col:nth-child(2) { order: 98; }
.mega-grid-reverse > .mega-col:nth-child(3) { order: 97; }

/* カテゴリーヘッダー: ラベル + 水平ライン */
.minimal-category-header {
  font-size: 12px;
  font-weight: 600;
  color: var(--kyuhaku-dark);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.minimal-category-header::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--kyuhaku-primary);
}

/* リストコンテナ */
.minimal-list {
  display: flex;
  flex-direction: column;
}

/* 各項目: 罫線区切り + 左アクセントライン */
.minimal-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid #f1f5f9;
  color: #374151;
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.25s ease, padding-left 0.25s ease;
  position: relative;
}

.minimal-item:last-child {
  border-bottom: none;
}

/* 中項目アイコン */
.minimal-item i {
  width: 1.1em;
  text-align: center;
  color: var(--kyuhaku-primary);
  font-size: 0.85em;
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity 0.25s ease;
  position: relative;
  top: 1px;
}

.minimal-item:hover i {
  opacity: 1;
}

/* ホバー時の左アクセントライン（2px、高さアニメーション） */
.minimal-item::before {
  content: '';
  width: 3px;
  height: 0;
  background: var(--kyuhaku-primary);
  border-radius: 1.5px;
  transition: height 0.25s ease;
  position: absolute;
  left: -0.75rem;
  top: 50%;
  transform: translateY(-50%);
}

.minimal-item:hover::before {
  height: 60%;
}

.minimal-item:hover {
  color: var(--kyuhaku-primary);
  padding-left: 0.25rem;
}

/* 矢印アイコン */
.minimal-item-arrow {
  width: 1rem;
  height: 1rem;
  color: transparent;
  transition: color 0.25s ease, transform 0.25s ease;
  margin-left: auto;
  flex-shrink: 0;
}

.minimal-item:hover .minimal-item-arrow {
  color: var(--kyuhaku-primary);
  transform: translateX(2px);
}

/* スライドインアニメーション（ミニマルライン用） */
.mega-menu-trigger.is-open .minimal-item {
  opacity: 0;
  animation: menuItemSlideIn 0.25s ease-out forwards;
}

.mega-menu-trigger.is-open .minimal-item:nth-child(1) { animation-delay: 0.22s; }
.mega-menu-trigger.is-open .minimal-item:nth-child(2) { animation-delay: 0.25s; }
.mega-menu-trigger.is-open .minimal-item:nth-child(3) { animation-delay: 0.28s; }
.mega-menu-trigger.is-open .minimal-item:nth-child(4) { animation-delay: 0.31s; }
.mega-menu-trigger.is-open .minimal-item:nth-child(5) { animation-delay: 0.34s; }
.mega-menu-trigger.is-open .minimal-item:nth-child(6) { animation-delay: 0.37s; }
.mega-menu-trigger.is-open .minimal-item:nth-child(7) { animation-delay: 0.40s; }

/* カテゴリーヘッダーもスライドイン */
.mega-menu-trigger.is-open .minimal-category-header {
  opacity: 0;
  animation: menuItemSlideIn 0.25s ease-out forwards;
  animation-delay: 0.18s;
}

/* カード型メニューアイテム */
.menu-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border: 1px solid #e5e7eb;
}

.menu-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px -5px rgba(var(--kyuhaku-primary-rgb), 0.15);
  border-color: var(--kyuhaku-primary);
}

/* ================================================================
   ヘッダー：言語ドロップダウン
   ================================================================ */
.language-dropdown {
  position: relative;
}

.language-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  z-index: var(--z-language-dropdown);
}

/* 言語メニュー内リストのリセット（preflight:false対策） */
.language-dropdown-menu ul {
  list-style: none;
  margin: 0;
  padding: 0.375rem 0;
}

.language-dropdown-menu li {
  margin: 0;
  padding: 0;
}

.language-dropdown-menu a {
  display: block;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  color: #374151;
  text-decoration: none;
  text-align: center;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.language-dropdown-menu a:hover {
  background-color: var(--kyuhaku-light);
  color: var(--kyuhaku-primary);
  text-decoration: none;
}

.language-dropdown:hover .language-dropdown-menu,
.language-dropdown.is-open .language-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

/* 言語ドロップダウンの矢印回転 */
.language-dropdown.is-open .language-arrow {
  transform: rotate(180deg);
}

/* ホバー領域を拡張 */
.language-dropdown::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.5rem;
  height: 0.5rem;
}

/* ================================================================
   ヘッダー：全画面モバイルメニュー
   ================================================================ */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background-color: #ffffff;
  z-index: var(--z-mobile-menu);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overscroll-behavior: none;
}

.mobile-menu-overlay.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-menu-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.mobile-menu-nav {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-menu-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-menu-item {
  border-bottom: 1px solid #e5e7eb;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.mobile-menu-overlay.is-open .mobile-menu-item {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu-overlay.is-open .mobile-menu-item:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu-overlay.is-open .mobile-menu-item:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu-overlay.is-open .mobile-menu-item:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu-overlay.is-open .mobile-menu-item:nth-child(4) { transition-delay: 0.2s; }
.mobile-menu-overlay.is-open .mobile-menu-item:nth-child(5) { transition-delay: 0.25s; }

.mobile-menu-item.is-expanded {
  border-bottom: 1px solid var(--kyuhaku-primary);
}

.mobile-menu-trigger-btn,
.mobile-menu-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 1rem 1.25rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: inherit;
  color: #374151;
  background: none;
  border: none;
  border-left: 3px solid transparent;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

a.mobile-menu-trigger-btn {
  border-left: none;
  box-sizing: border-box;
  font-family: inherit;
}

.mobile-menu-trigger-btn:hover,
.mobile-menu-link:hover {
  background-color: #f3f4f6;
  color: var(--kyuhaku-primary);
}

.mobile-menu-trigger-btn[aria-expanded="true"] {
  background-color: var(--kyuhaku-light);
  color: var(--kyuhaku-primary);
  border-left-color: var(--kyuhaku-primary);
  font-weight: 600;
}

.mobile-menu-arrow {
  width: 1rem;
  height: 1rem;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.mobile-menu-trigger-btn[aria-expanded="true"] .mobile-menu-arrow {
  transform: rotate(180deg);
}

.mobile-submenu {
  max-height: 0;
  overflow: hidden;
  background-color: #f9fafb;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              padding 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0;
}

.mobile-submenu.is-open {
  max-height: 3000px;
  padding: 0.5rem 0;
  transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-submenu-group {
  padding: 0.5rem 1.25rem;
  max-width: 280px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.mobile-submenu.is-open .mobile-submenu-group {
  opacity: 1;
  transform: translateY(0);
}

.mobile-submenu.is-open .mobile-submenu-group:nth-child(1) { transition-delay: 0.15s; }
.mobile-submenu.is-open .mobile-submenu-group:nth-child(2) { transition-delay: 0.25s; }
.mobile-submenu.is-open .mobile-submenu-group:nth-child(3) { transition-delay: 0.35s; }

.mobile-submenu-group + .mobile-submenu-group {
  border-top: 1px solid #e5e7eb;
  margin-top: 0.5rem;
  padding-top: 1rem;
}

.mobile-submenu-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--kyuhaku-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
  text-align: left;
}

.mobile-submenu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-submenu li a {
  display: block;
  padding: 0.625rem 0.75rem;
  font-size: 0.9375rem;
  color: #4b5563;
  text-decoration: none;
  border-radius: 0.375rem;
  transition: background-color 0.2s ease, color 0.2s ease;
  text-align: left;
}

.mobile-submenu li a:hover {
  background-color: var(--kyuhaku-light);
  color: var(--kyuhaku-primary);
}

/* モバイルカードグリッド（楽しむ・学ぶ用）*/
.mobile-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  padding: 1rem;
}

.mobile-menu-card {
  display: block;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  padding: 0.75rem;
  text-align: center;
  text-decoration: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.mobile-menu-card:hover {
  border-color: var(--kyuhaku-primary);
  box-shadow: 0 4px 12px rgba(var(--kyuhaku-primary-rgb), 0.1);
}

.mobile-menu-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 0.5rem;
  margin-bottom: 0.5rem;
}

.mobile-menu-card .card-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: #374151;
  line-height: 1.3;
}

.mobile-menu-card .card-subtitle {
  font-size: 0.6875rem;
  color: #9ca3af;
  margin-top: 0.25rem;
}

.mobile-menu-footer {
  padding: 1.25rem;
  border-top: 1px solid #e5e7eb;
  background-color: #f9fafb;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease;
  transition-delay: 0.3s;
}

.mobile-menu-overlay.is-open .mobile-menu-footer {
  opacity: 1;
  transform: translateY(0);
}

/* Body overflow hidden when menu is open */
/* iOS Safari対策: position: fixed で背景スクロールをブロック */
body.mobile-menu-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
  height: 100%;
  /* スクロール位置はJavaScriptで保存・復元 */
}

/* ================================================================
   ヘッダー：スクロール時の挙動
   ================================================================ */
.header-wrapper {
  position: relative;
  z-index: var(--z-header);
  transition: background 0.4s ease-out,
              backdrop-filter 0.4s ease-out,
              -webkit-backdrop-filter 0.4s ease-out,
              transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.header-wrapper.is-sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  /* トップバー分だけ上にスライド → ナビバーがビューポート上端に来る */
  transform: translateY(var(--top-bar-offset, 0px));
}

/* トップバー: スライドアウト時にフェード */
.top-bar {
  transition: opacity 0.3s ease-out;
}

.header-wrapper.is-sticky .top-bar {
  opacity: 0;
  pointer-events: none; /* スライドアウト中の操作を防止 */
}

/* アクセントライン: スムーズな高さ変更 */
.accent-line {
  transition: height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.header-wrapper.is-sticky .accent-line {
  height: 2px;
}

/* ナビゲーション内部のトランジション */
.nav-inner {
  transition: padding 0.4s ease-out;
}

.logo-img {
  transition: height 0.4s ease-out;
}

.main-nav-wrapper {
  transition: font-size 0.4s ease-out;
}

.main-nav-wrapper a {
  text-decoration: none;
  transition: padding 0.4s ease-out, font-size 0.4s ease-out;
}

/* ナビ大項目: weight 700, size 17px */
.main-nav-wrapper > .mega-menu-trigger > a,
.main-nav-wrapper > a {
  font-weight: 700;
  font-size: 17px;
}

.header-wrapper.is-compact .main-nav .nav-inner {
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
}

.header-wrapper.is-compact .main-nav .logo-img {
  height: 1rem;
}

.header-wrapper.is-compact .main-nav-wrapper a {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

/* コンパクトモード時の半透明背景 */
.header-wrapper.is-compact {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-wrapper.is-compact .main-nav {
  background: transparent;
}

/* メガメニュー展開時：ヘッダーを不透明に戻す */
.header-wrapper.is-compact.menu-is-open {
  background: rgba(255, 255, 255, 1);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* メガメニュー展開時：メインコンテンツにブラー */
.main-content-wrapper {
  transition: filter 0.4s ease;
}

body.mega-menu-open .main-content-wrapper {
  filter: blur(4px);
  pointer-events: none;
}

/* ヘッダー分の余白（sticky時にコンテンツがずれないように） */
.header-placeholder {
  height: 0;
}

.header-placeholder.is-active {
  height: var(--header-height, 120px);
}

/* ================================================================
   アクセシビリティ: フォーカス状態
   ================================================================ */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--kyuhaku-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* メガメニュートリガーのフォーカス時にメニューを開く */
.mega-menu-trigger:focus-within .mega-menu-animate {
  max-height: 800px;
  pointer-events: auto;
  transition: max-height 0.5s ease-in;
}

/* 言語ドロップダウンのフォーカス対応 */
.language-dropdown:focus-within .language-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

/* スキップリンク（キーボードナビゲーション用） */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--kyuhaku-primary);
  color: white;
  padding: 0.5rem 1rem;
  z-index: var(--z-skip-link);
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: 0;
}

/* ================================================================
   フッター：共通スタイル
   ================================================================ */
/* ヘッダー内リストのリセット（preflight:false対策） */
site-header ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* フッター内リストとボタンのリセット（preflight:false対策） */
site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

site-footer button {
  background: transparent;
  border: none;
  cursor: pointer;
}

site-footer a {
  text-decoration: none;
  color: inherit;
}

.footer-title {
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-link {
  color: #9ca3af;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--kyuhaku-primary);
}

/* SNSアイコン */
.sns-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
  background-color: rgba(255, 255, 255, 0.1);
  color: #9ca3af;
  transition: background-color 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

.sns-icon:hover {
  background-color: var(--kyuhaku-primary);
  color: white;
  transform: translateY(-2px);
}

/* SNSブランドカラー（ホバー時） */
.sns-icon.sns-instagram:hover {
  background-color: #E4405F;
}

.sns-icon.sns-x:hover {
  background-color: #000000;
}

.sns-icon.sns-facebook:hover {
  background-color: #1877F2;
}

.sns-icon.sns-youtube:hover {
  background-color: #FF0000;
}

/* ヘッダー用SNSテキストカラー */
.hover\:text-instagram:hover {
  color: #E4405F;
}

.hover\:text-x:hover {
  color: #000000;
}

.hover\:text-facebook:hover {
  color: #1877F2;
}

.hover\:text-youtube:hover {
  color: #FF0000;
}

/* PDFリンク */
.pdf-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.375rem 0.75rem;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.375rem;
  color: #d1d5db;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.pdf-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--kyuhaku-primary);
  color: white;
}

/* ================================================================
   フッター：ハローダイヤルモーダル
   ================================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  transform: scale(0.95);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.modal-overlay.is-open .modal-content {
  transform: scale(1);
  opacity: 1;
}

/* ================================================================
   ユーティリティ：Tailwind拡張
   ================================================================ */
.text-kyuhaku-primary {
  color: var(--kyuhaku-primary);
}

.bg-kyuhaku-primary {
  background-color: var(--kyuhaku-primary);
}

.bg-kyuhaku-light {
  background-color: var(--kyuhaku-light);
}

.hover\:text-kyuhaku-primary:hover {
  color: var(--kyuhaku-primary);
}

.hover\:bg-kyuhaku-light:hover {
  background-color: var(--kyuhaku-light);
}

.from-kyuhaku-dark {
  --tw-gradient-from: var(--kyuhaku-dark);
}

.via-kyuhaku-primary {
  --tw-gradient-stops: var(--tw-gradient-from), var(--kyuhaku-primary), var(--tw-gradient-to);
}

.to-kyuhaku-dark {
  --tw-gradient-to: var(--kyuhaku-dark);
}

/* ================================================================
   検索モーダル
   ================================================================ */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-search);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.search-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.search-overlay-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.search-container {
  position: relative;
  width: 90%;
  max-width: 640px;
  transform: translateY(-20px);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.search-overlay.is-open .search-container {
  transform: translateY(0);
  opacity: 1;
}

.search-close-btn {
  position: absolute;
  top: -3rem;
  right: 0;
  color: #ffffff;
  opacity: 0.8;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  transition: opacity 0.2s ease;
}

.search-close-btn:hover {
  opacity: 1;
}

.search-form {
  background: #ffffff;
  border-radius: 1rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  overflow: hidden;
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  padding: 0.25rem 0.25rem 0.25rem 1.25rem;
  gap: 0.75rem;
}

.search-input-icon {
  width: 1.5rem;
  height: 1.5rem;
  color: #9ca3af;
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 1.125rem;
  color: #1f2937;
  padding: 1rem 0;
  background: transparent;
  font-family: inherit;
  letter-spacing: 0.02em;
}

.search-input::placeholder {
  color: #d1d5db;
}

.search-submit-btn {
  flex-shrink: 0;
  padding: 0.75rem 1.5rem;
  background-color: var(--kyuhaku-primary);
  color: #ffffff;
  border: none;
  border-radius: 0.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
  letter-spacing: 0.05em;
}

.search-submit-btn:hover {
  background-color: var(--kyuhaku-dark);
}

.search-hint {
  padding: 0.75rem 1.25rem;
  font-size: 0.8125rem;
  color: #9ca3af;
  border-top: 1px solid #f3f4f6;
}

/* ================================================================
   ローディングスピナーアニメーション
   ================================================================ */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ================================================================
   レスポンシブ：タブレット向けグリッド調整
   ================================================================ */
@media (max-width: 1280px) {
  .mega-grid-3col {
    grid-template-columns: repeat(2, 1fr);
  }

  .mega-card-grid {
    grid-template-columns: repeat(4, minmax(0, 180px));
  }
}

/* ================================================================
   アクセシビリティ：モーション軽減
   ================================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}