/*
  配色はすべて WCAG 2.1 AA（本文4.5:1 / 大きな文字3:1）を満たす組み合わせで選んでいる。
  施設バッジの色は src/sources/*.js 側で定義（白文字で4.5:1以上を確認済み）。
*/

:root {
  --navy-900: #0e1d27;
  --navy-800: #122430;
  --navy-700: #1a3040;

  --cream: #f4eee2;
  --cream-deep: #ece4d5;
  --card: #ffffff;
  /* --border は装飾的な区切り。操作できる部品の輪郭には --border-strong を使い、
     背景に対して3:1以上を確保する（WCAG 1.4.11 非テキストのコントラスト）。 */
  --border: #ded4c2;
  --border-strong: #8a7d63;

  --ink: #1c2630;
  --ink-muted: #59636d;

  --gold: #d9a95c;
  --gold-strong: #a8761f;
  --green: #2e6b4c;

  --focus: #0b63c5;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(26, 35, 45, 0.05), 0 6px 18px rgba(26, 35, 45, 0.06);
  --serif: 'Hiragino Mincho ProN', 'Yu Mincho', 'YuMincho', 'Noto Serif JP', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Noto Sans JP', sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --cream: #131a20;
    --cream-deep: #0e151a;
    --card: #1d262e;
    --border: #33404b;
    --border-strong: #5f7180;
    --ink: #eef2f5;
    --ink-muted: #a8b4bf;
    --gold: #e2b876;
    --gold-strong: #e2b876;
    --green: #6cc199;
    --focus: #7db6ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 6px 18px rgba(0, 0, 0, 0.3);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ---- アクセシビリティ基盤 ---------------------------------------------- */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 18px;
  border-radius: 0 0 10px 10px;
  background: var(--gold);
  color: var(--navy-900);
  font-weight: 700;
  text-decoration: none;
  transition: top 0.15s ease;
}

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

/* キーボード操作時のみ、どの要素でも必ず見えるフォーカスリングを出す */
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.hero :focus-visible { outline-color: var(--gold); }

/* ---- ヒーロー ------------------------------------------------------------ */

.hero {
  background: linear-gradient(155deg, var(--navy-900) 0%, var(--navy-700) 100%);
  color: #ffffff;
  padding: 46px 0 66px;
}

.hero__inner,
.progress__inner,
.controls__inner,
.main,
.footer__inner {
  max-width: 880px;
  margin: 0 auto;
  padding-inline: 24px;
}

.hero__eyebrow {
  margin: 0 0 18px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.hero__title {
  margin: 0 0 20px;
  font-family: var(--serif);
  font-size: clamp(1.9rem, 5.4vw, 2.9rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.hero__title-line { display: block; }

/* 副題は主題より一段小さく。em で指定しているので、画面幅に応じた
   clamp() のスケールに追随したまま比率が保たれる。 */
.hero__title-line--sub {
  font-size: 0.7em;
  line-height: 1.45;
}

.hero__lead {
  margin: 0 0 28px;
  max-width: 34em;
  font-size: 0.95rem;
  color: #cbd5dd;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.hero__updated {
  margin: 0;
  padding: 9px 20px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  font-size: 0.85rem;
  color: #dbe3ea;
}

.refresh {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 24px;
  border: 0;
  border-radius: 999px;
  background: var(--gold);
  color: var(--navy-900);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease;
}

.refresh:hover:not(:disabled) { background: #e6bb74; }
.refresh[aria-busy='true'] { cursor: progress; }
.refresh:disabled { opacity: 0.9; }

.refresh[aria-busy='true'] .refresh__icon {
  animation: spin 0.9s linear infinite;
  transform-origin: 50% 50%;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- 更新の進捗 ---------------------------------------------------------- */

.progress {
  background: var(--navy-800);
  color: #e4eaef;
  /* 下の余白は、重ねて配置される検索バー（margin-top: -26px）の分を見込んでいる */
  padding: 18px 0 46px;
}

.progress__track {
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  overflow: hidden;
}

.progress__fill {
  height: 100%;
  width: 0;
  background: var(--gold);
  transition: width 0.35s ease;
}

.progress__status {
  margin: 10px 0 8px;
  font-size: 0.85rem;
  color: #dbe3ea;
  font-variant-numeric: tabular-nums;
}

.progress__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.progress__item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  border: 1px solid rgba(255, 255, 255, 0.24);
  color: #c3cdd6;
}

.progress__item::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.progress__item.is-loading { color: var(--gold); }
.progress__item.is-loading::before { animation: pulse 0.9s ease-in-out infinite; }
.progress__item.is-done { color: #8fd6b0; border-color: rgba(143, 214, 176, 0.45); }
.progress__item.is-error { color: #ff9d92; border-color: rgba(255, 157, 146, 0.5); }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.65); }
}

/* ---- 検索とフィルタ ------------------------------------------------------ */

.controls { position: relative; }

.controls__inner { padding-block: 0; }

.search {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: -26px;
  padding: 14px 22px;
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.search__icon { color: var(--ink-muted); flex-shrink: 0; }

.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: none;
  color: inherit;
  font-family: inherit;
  font-size: 1rem;
  outline-offset: 4px;
}

.search input::placeholder { color: var(--ink-muted); }

/* 表示切り替えのチップ列と、施設ダイアログを開くボタンを1行に並べる */
.filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 22px 0 4px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.facility-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.14s ease, background 0.14s ease;
}

.facility-button:hover { border-color: var(--ink); background: var(--cream-deep); }
.facility-button svg { color: var(--ink-muted); flex-shrink: 0; }
#facilitySummary { font-weight: 700; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.88rem;
  line-height: 1.4;
  cursor: pointer;
  transition: background 0.14s ease, border-color 0.14s ease, color 0.14s ease;
}

.chip:hover { background: var(--cream-deep); }

/* 選択状態は色だけでなく塗りつぶし＋チェック記号でも示す（色覚特性への配慮） */
.chip[aria-checked='true'] {
  background: var(--navy-800);
  border-color: var(--navy-800);
  color: #ffffff;
}

@media (prefers-color-scheme: dark) {
  .chip[aria-checked='true'] {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--navy-900);
  }
}

.chip[aria-checked='true']::before {
  content: '✓';
  font-size: 0.82em;
  font-weight: 700;
}

.chip__star { color: var(--gold-strong); }
.chip[aria-checked='true'] .chip__star { color: inherit; }

/* ---- 施設ダイアログ ------------------------------------------------------ */

.dialog {
  width: min(440px, calc(100vw - 32px));
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
  color: var(--ink);
  box-shadow: 0 12px 40px rgba(16, 26, 36, 0.28);
}

.dialog::backdrop {
  background: rgba(12, 22, 30, 0.55);
}

.dialog__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 20px 10px;
}

.dialog__title {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 600;
}

.dialog__close {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--ink-muted);
  cursor: pointer;
}

.dialog__close:hover { background: var(--cream-deep); color: var(--ink); }

.dialog__actions {
  display: flex;
  gap: 16px;
  padding: 0 20px 12px;
}

/* 見た目はリンク、実体はボタン */
.link-button {
  padding: 0;
  border: 0;
  background: none;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.82rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

.link-button:hover { color: var(--green); }

.facility-list {
  list-style: none;
  margin: 0;
  padding: 0 12px;
  max-height: min(52vh, 420px);
  overflow-y: auto;
}

.facility-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border-radius: 10px;
  cursor: pointer;
}

.facility-option:hover { background: var(--cream-deep); }

.facility-option:has(input:focus-visible) {
  outline: 3px solid var(--focus);
  outline-offset: -1px;
}

/* チェックボックスは支援技術のために残しつつ、標準の見た目のまま使う */
.facility-option input {
  width: 18px;
  height: 18px;
  accent-color: var(--navy-800);
  flex-shrink: 0;
  cursor: pointer;
}

@media (prefers-color-scheme: dark) {
  .facility-option input { accent-color: var(--gold); }
}

.facility-option__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--facility-color, var(--ink-muted));
  flex-shrink: 0;
}

.facility-option__name { flex: 1; font-size: 0.92rem; }

.facility-option__count {
  font-size: 0.8rem;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}

.dialog__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px 18px;
  margin-top: 8px;
  border-top: 1px solid var(--border);
}

.dialog__count {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.dialog__done {
  padding: 9px 22px;
  border: 0;
  border-radius: 999px;
  background: var(--navy-800);
  color: #ffffff;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
}

@media (prefers-color-scheme: dark) {
  .dialog__done { background: var(--gold); color: var(--navy-900); }
}

/* ---- タイムライン -------------------------------------------------------- */

.main { padding-block: 8px 40px; }

.main:focus-visible { outline: none; }

.result-count {
  margin: 14px 0 22px;
  font-size: 0.85rem;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}

.timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 34px;
}

/* 月と月をつなぐ破線。装飾なので支援技術には露出しない。 */
.timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  border-left: 2px dashed var(--green);
  opacity: 0.55;
}

.month { position: relative; margin-bottom: 30px; }

.month__label {
  position: relative;
  margin: 0 0 14px;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.03em;
}

.month__label::before {
  content: '';
  position: absolute;
  left: -34px;
  top: 0.62em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--green);
}

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

.month__events > li { position: relative; margin-bottom: 12px; }

.month__events > li::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 30px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold-strong);
}

/* ---- イベントカード ------------------------------------------------------ */

.event {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px 20px;
  box-shadow: var(--shadow);
  transition: border-color 0.14s ease, transform 0.14s ease;
}

.event:hover { border-color: var(--gold-strong); transform: translateY(-1px); }

/* カード内のリンクにフォーカスが来たら、カード全体を囲って場所を示す */
.event:has(.event__link:focus-visible) {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.event__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 10px;
}

.event__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.event__facility {
  padding: 4px 13px;
  border-radius: 7px;
  background: var(--facility-color, var(--navy-800));
  color: #ffffff;
  font-size: 0.76rem;
  font-weight: 700;
}

.event__badge {
  padding: 3px 10px;
  border-radius: 7px;
  border: 1px solid var(--border);
  color: var(--ink-muted);
  font-size: 0.74rem;
}

.event__badge--now {
  border-color: var(--green);
  color: var(--green);
  font-weight: 700;
}

/* サムネイルがある場合は左に画像、右に本文。無ければ本文が全幅を使う。 */
.event__body {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.event__text { flex: 1; min-width: 0; }

.event__thumb {
  flex-shrink: 0;
  width: 104px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 9px;
  background: var(--cream-deep);
}

.event__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.event__title {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.5;
}

/* カード全体をクリック可能にしつつ、リンクは1つだけに保つ */
.event__link {
  color: inherit;
  text-decoration: none;
}

.event__link::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
}

.event__link:hover { text-decoration: underline; text-underline-offset: 3px; }

.event__date {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0 0 6px;
  font-size: 0.9rem;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

/* アイコンは折り返しに巻き込まれず、常に先頭行の左に残す */
.event__date::before {
  content: '🗓';
  font-size: 0.95em;
  flex-shrink: 0;
}

/* 会期が2行になる場合の改行位置は「〜」だけ。日付そのものは分断しない。 */
.event__date time { min-width: 0; }
.event__date-part { white-space: nowrap; }

.event__note {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.event__source {
  margin: 10px 0 0;
  font-size: 0.78rem;
  color: var(--ink-muted);
}

/* お気に入りボタンはリンクの上に重ねる */
.fav {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  margin: -6px -6px 0 0;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--ink-muted);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.14s ease, color 0.14s ease;
}

.fav:hover { background: var(--cream-deep); color: var(--gold-strong); }
.fav[aria-pressed='true'] { color: var(--gold-strong); }

/* ---- 空状態・フッター ---------------------------------------------------- */

.load-more {
  display: flex;
  justify-content: center;
  padding: 4px 0 44px;
}

.load-more__button {
  padding: 12px 30px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.14s ease, border-color 0.14s ease;
}

.load-more__button:hover {
  background: var(--cream-deep);
  border-color: var(--ink);
}

.empty {
  margin: 10px 0 60px;
  padding: 46px 24px;
  text-align: center;
  color: var(--ink-muted);
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.footer {
  border-top: 1px solid var(--border);
  background: var(--cream-deep);
  padding: 28px 0 56px;
  font-size: 0.83rem;
  color: var(--ink-muted);
}

.footer__heading {
  margin: 18px 0 8px;
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--ink);
}

.footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.footer__links a { color: var(--ink); }

/* ---- レスポンシブ / 環境設定 --------------------------------------------- */

@media (max-width: 560px) {
  .hero { padding: 34px 0 58px; }
  .hero__actions { gap: 10px; }
  .hero__updated, .refresh { width: 100%; justify-content: center; text-align: center; }
  .timeline { padding-left: 26px; }
  .month__label::before { left: -26px; width: 10px; height: 10px; }
  .month__events > li::before { left: -24px; }
  .event { padding: 16px 18px 18px; }
  .event__body { gap: 12px; }
  .event__thumb { width: 78px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Windowsハイコントラストモードでも選択状態が伝わるようにする */
@media (forced-colors: active) {
  .chip[aria-checked='true'] { border: 3px solid; }
  .dialog { border: 2px solid; }
  .event { border: 1px solid; }
  .progress__fill { background: Highlight; }
}