/* 公開サイトのスタイル。トークンは tokens.css。 */

/* ---------- ベース ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 4rem; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.85;
  letter-spacing: 0.02em;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, iframe { max-width: 100%; }
img { height: auto; }
a { color: var(--color-link); text-underline-offset: 0.2em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; border-radius: var(--radius-sm); }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0; line-height: 1.4; font-weight: 600; }
h1, h2, h3, h4, p, li, td, th { overflow-wrap: anywhere; }
::selection { background: rgba(0, 113, 227, 0.2); }

.container { width: min(100% - 2.5rem, var(--content-width)); margin-inline: auto; }

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

.skip-link {
  position: absolute; top: 0.5rem; left: 0.5rem; z-index: 300; padding: 0.5rem 1rem;
  color: #fff; background: var(--color-text); border-radius: var(--radius-sm);
  transform: translateY(-200%);
}
.skip-link:focus { transform: none; }

/* ---------- ヘッダー ---------- */
.site-info { font-size: 0.8125rem; color: var(--color-text-muted); background: var(--color-surface); border-bottom: 1px solid var(--color-line); }
.site-info a { color: inherit; text-decoration: none; }
.site-info a:hover { color: var(--color-link); text-decoration: underline; }
.site-info__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.25rem 1.5rem; padding-block: 0.5rem; }
.site-info__contact, .site-info__links { margin: 0; list-style: none; }

.site-brand { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem 2rem; padding-block: 1.25rem 1rem; }
.site-brand__logo { display: block; line-height: 0; }
.site-brand__links { display: flex; flex-wrap: wrap; margin: 0; list-style: none; font-size: 0.875rem; }
.site-brand__links a { color: var(--color-text); text-decoration: none; }
.site-brand__links a:hover { color: var(--color-link); text-decoration: underline; }
.site-brand__links li + li::before { content: "|"; margin-inline: 0.75rem; color: var(--color-text-muted); }

/* ---------- メインメニュー ---------- */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  border-block: 1px solid var(--color-line);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
}

.site-nav__list { display: flex; flex-wrap: wrap; gap: 0.125rem; margin: 0; padding: 0.375rem 0; list-style: none; }
.site-nav__item { position: relative; }

.site-nav__link {
  display: block; padding: 0.5rem 0.875rem; border: 0; border-radius: var(--radius-pill);
  font: inherit; font-size: 0.875rem; line-height: 1.5; color: var(--color-text);
  background: transparent; text-decoration: none; cursor: pointer;
  transition: background-color 0.2s var(--ease);
}
.site-nav__link:hover, .site-nav__item--parent:focus-within > .site-nav__link { background: rgba(0, 0, 0, 0.05); }
.site-nav__link[aria-current="page"], .site-nav__item[data-current] > .site-nav__link { background: rgba(0, 0, 0, 0.09); }

.site-nav__submenu {
  position: absolute; top: 100%; left: 0; z-index: 10; min-width: 13rem; margin: 0; padding: 0.375rem;
  list-style: none; visibility: hidden; opacity: 0; transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.96); border: 1px solid var(--color-line); border-radius: var(--radius-md);
  box-shadow: var(--shadow-raised);
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
}
.site-nav__item--parent:hover > .site-nav__submenu,
.site-nav__item--parent:focus-within > .site-nav__submenu,
.site-nav__link[aria-expanded="true"] + .site-nav__submenu { visibility: visible; opacity: 1; transform: none; }

.site-nav__submenu a { display: block; padding: 0.5rem 0.75rem; border-radius: var(--radius-sm); font-size: 0.875rem; line-height: 1.5; color: var(--color-text); text-decoration: none; }
.site-nav__submenu a:hover { background: var(--color-surface); color: var(--color-link); }
.site-nav__submenu a[aria-current="page"] { background: rgba(0, 0, 0, 0.09); }

.site-nav__toggle { display: none; }

/* ---------- ページの見出し ---------- */
.page-header { background: var(--color-surface); }
.page-header__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 2rem; padding-block: 2.25rem; }
.page-header__title { font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem); letter-spacing: 0.01em; }

.breadcrumb { font-size: 0.8125rem; color: var(--color-text-muted); }
.breadcrumb ol { display: flex; flex-wrap: wrap; list-style: none; }
.breadcrumb li + li::before { content: "/"; margin-inline: 0.5rem; }
.breadcrumb a { color: inherit; text-decoration: none; }
.breadcrumb a:hover { color: var(--color-link); text-decoration: underline; }

.page-body { padding-block: 3rem 4rem; }
.page-body > * + * { margin-top: 3.5rem; }

/* ---------- 本文 ---------- */
.prose > * + * { margin-top: 1em; }
.prose h2 { margin-top: 0; font-size: clamp(1.375rem, 1.2rem + 0.7vw, 1.75rem); letter-spacing: 0.01em; }
.prose h2 + *, .prose h3 + * { margin-top: 1.25rem; }
.prose h3 { margin-top: 2em; font-size: 1.25rem; }
.prose ul, .prose ol { padding-left: 1.5em; }
.prose li + li { margin-top: 0.25em; }
.prose img { border-radius: var(--radius-md); }
.prose hr { border: 0; border-top: 1px solid var(--color-line); }

.section > h2 { font-size: clamp(1.375rem, 1.2rem + 0.7vw, 1.75rem); letter-spacing: 0.01em; }
.section > h2 + * { margin-top: 1.25rem; }
.section > * + * { margin-top: 1em; }

/* ---------- リスト・パノラマ ---------- */
.inline-list { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; list-style: none; }
.inline-list li + li::before { content: "|"; margin-right: 1.5rem; color: var(--color-text-muted); }

.panorama { width: 100%; height: min(75vw, 37.5rem); overflow: hidden; border-radius: var(--radius-md); background: var(--color-surface); }

/* ---------- ボタン ---------- */
.button {
  display: inline-block; padding: 0.625rem 1.5rem; border: 1px solid var(--color-accent); border-radius: var(--radius-pill);
  font: inherit; font-size: 0.9375rem; font-weight: 500; line-height: 1.5; text-align: center;
  color: #fff; background: var(--color-accent); text-decoration: none; cursor: pointer;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.button:hover { background: var(--color-accent-strong); border-color: var(--color-accent-strong); }
.button--secondary { color: var(--color-link); background: var(--color-bg); border-color: var(--color-line); }
.button--secondary:hover { color: var(--color-link); background: var(--color-bg); border-color: var(--color-link); }

/* ---------- 表 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--color-line); border-radius: var(--radius-md); }
.table-wrap table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; line-height: 1.7; }
.table-wrap th, .table-wrap td { padding: 0.625rem 1rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--color-line); }
.table-wrap tr:last-child > * { border-bottom: 0; }
.table-wrap th { background: var(--color-surface); font-weight: 600; }
.table-wrap tbody tr:nth-child(even) { background: rgba(0, 0, 0, 0.02); }

/* ---------- 画像・動画・地図 ---------- */
.figure { margin: 0; }
.figure img { display: block; width: 100%; border-radius: var(--radius-md); }
.figure figcaption { margin-top: 0.5rem; font-size: 0.875rem; color: var(--color-text-muted); }

.embed { aspect-ratio: 16 / 9; overflow: hidden; border-radius: var(--radius-md); background: var(--color-surface); }
.embed iframe { display: block; width: 100%; height: 100%; border: 0; }
.embed--tall { aspect-ratio: auto; height: min(75vh, 50rem); }

/* ---------- ギャラリー・カード ---------- */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr)); gap: 0.75rem; list-style: none; }
.gallery img { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius-md); transition: opacity 0.2s var(--ease); }
.gallery a:hover img { opacity: 0.85; }
.gallery--portrait { grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr)); }
.gallery--portrait img { aspect-ratio: 640 / 905; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr)); gap: 1.5rem; list-style: none; }
.card { overflow: hidden; height: 100%; border: 1px solid var(--color-line); border-radius: var(--radius-lg); background: var(--color-bg); }
.card__media { display: block; background: var(--color-surface); line-height: 0; }
.card__media img { width: 100%; }
.card__body { padding: 1rem 1.25rem 1.25rem; }
.card__title { font-size: 1rem; }
.card__title a { color: var(--color-link); text-decoration: none; }
.card__title a:hover { text-decoration: underline; }
.card__meta { margin-top: 0.25rem; font-size: 0.8125rem; color: var(--color-text-muted); }

.lightbox { width: min(96vw, 80rem); max-height: 96vh; padding: 0; border: 0; border-radius: var(--radius-md); background: transparent; }
.lightbox::backdrop { background: rgba(0, 0, 0, 0.85); }
.lightbox__figure { position: relative; margin: 0; }
.lightbox__figure img { display: block; max-width: 100%; max-height: 90vh; margin-inline: auto; border-radius: var(--radius-md); }
.lightbox__button {
  position: absolute; top: 50%; width: 2.75rem; height: 2.75rem; padding: 0; border: 0; border-radius: 50%;
  font-size: 1.5rem; line-height: 1; color: var(--color-text); background: rgba(245, 245, 247, 0.85); cursor: pointer;
}
.lightbox__button--prev { left: 0.5rem; }
.lightbox__button--next { right: 0.5rem; }
.lightbox__close { top: 0.5rem; right: 0.5rem; }

/* ---------- カルーセル ---------- */
.carousel { position: relative; }
.carousel__track {
  display: flex; gap: 1.25rem; margin: 0; padding: 0.5rem 0 1rem; list-style: none;
  overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none;
}
.carousel__track::-webkit-scrollbar { display: none; }
.carousel__item { flex: 0 0 min(16rem, 70%); scroll-snap-align: start; }
.carousel__item a { display: block; line-height: 0; }
.carousel__item img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: var(--radius-lg); box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12); }

.carousel__button {
  position: absolute; top: 45%; z-index: 1; width: 2.5rem; height: 2.5rem; padding: 0; border: 0; border-radius: 50%;
  font-size: 1.25rem; line-height: 1; color: var(--color-text); background: rgba(210, 210, 215, 0.85);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); cursor: pointer;
  transition: background-color 0.2s var(--ease);
}
.carousel__button:hover { background: rgba(190, 190, 195, 0.95); }
.carousel__button--prev { left: 0.5rem; }
.carousel__button--next { right: 0.5rem; }

/* ---------- 新着情報 ---------- */
.news { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 24rem), 1fr)); gap: 1.5rem; }
.news__block { padding: 1.25rem 1.5rem; border: 1px solid var(--color-line); border-radius: var(--radius-lg); }
.news__title { display: flex; align-items: center; gap: 0.5rem; font-size: 1rem; }
.news__title a { color: inherit; text-decoration: none; }
.news__title a:hover { color: var(--color-link); text-decoration: underline; }
.news__feed { display: inline-flex; color: var(--color-text-muted); }
.news__feed svg { width: 1rem; height: 1rem; }
.news__list { margin-top: 0.75rem; list-style: none; }
.news__list li { padding-block: 0.5rem; border-top: 1px solid var(--color-line); font-size: 0.9375rem; line-height: 1.6; }
.news__list a { text-decoration: none; }
.news__list a:hover { text-decoration: underline; }

/* ---------- フッター ---------- */
.site-footer { font-size: 0.875rem; color: var(--color-text); background: var(--color-surface); border-top: 1px solid var(--color-line); }
.site-footer a { color: var(--color-link); }
.site-footer__inner { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 2.5rem; padding-block: 2.75rem 1.5rem; }

.footer-block__title { margin-bottom: 0.75rem; font-size: 0.875rem; }
.footer-block > * + * { margin-top: 0.75rem; }
.footer-block .button { display: block; }
.footer-block__notes, .footer-block__links { list-style: none; line-height: 1.7; }
.footer-block__notes li + li { margin-top: 0.125rem; }
.footer-block__links li { border-bottom: 1px solid var(--color-line); }
.footer-block__links a { display: block; padding: 0.5rem 0; text-decoration: none; }
.footer-block__links a:hover { text-decoration: underline; }
.footer-block .prose { font-size: 0.875rem; line-height: 1.85; }

.site-footer__copyright { margin-block: 0; padding-block: 1rem; border-top: 1px solid var(--color-line); font-size: 0.8125rem; color: var(--color-text-muted); }

.to-top {
  position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; width: 2.75rem; height: 2.75rem; padding: 0; border: 0; border-radius: 50%;
  color: #fff; background: rgba(29, 29, 31, 0.72); cursor: pointer;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  transition: background-color 0.2s var(--ease);
}
.to-top:hover { background: rgba(29, 29, 31, 0.9); }
.to-top::before {
  content: ""; position: absolute; inset: 0; margin: auto; width: 0.75rem; height: 0.75rem;
  border: solid currentColor; border-width: 2px 0 0 2px; transform: translateY(0.15rem) rotate(45deg);
}
.to-top[hidden] { display: none; }

/* ---------- モバイル ---------- */
@media (max-width: 50rem) {
  html[data-js] .site-nav__toggle {
    position: relative; display: block; width: 2.75rem; height: 2.75rem; margin-left: auto; padding: 0;
    border: 0; background: transparent; cursor: pointer;
  }
  html[data-js] .site-nav__toggle::before, html[data-js] .site-nav__toggle::after {
    content: ""; position: absolute; left: 0.75rem; right: 0.75rem; height: 2px; background: var(--color-text);
    transition: transform 0.2s var(--ease);
  }
  html[data-js] .site-nav__toggle::before { top: 1.05rem; box-shadow: 0 0.35rem 0 var(--color-text); }
  html[data-js] .site-nav__toggle::after { top: 1.75rem; }
  html[data-js] .site-nav__toggle[aria-expanded="true"]::before { top: 1.4rem; transform: rotate(45deg); box-shadow: none; }
  html[data-js] .site-nav__toggle[aria-expanded="true"]::after { top: 1.4rem; transform: rotate(-45deg); }
  html[data-js] .site-nav__list { display: none; }
  html[data-js] .site-nav__list.is-open { display: block; }

  .site-nav__link { border-radius: var(--radius-sm); padding-block: 0.75rem; text-align: left; width: 100%; }
  .site-nav__submenu {
    position: static; visibility: visible; opacity: 1; transform: none; min-width: 0; margin-left: 0.75rem; padding: 0;
    background: transparent; border: 0; box-shadow: none; -webkit-backdrop-filter: none; backdrop-filter: none;
  }
  .site-nav__submenu a { padding-block: 0.625rem; }

  .page-header__inner { padding-block: 1.75rem; }
  .page-body { padding-block: 2rem 3rem; }
  .page-body > * + * { margin-top: 2.5rem; }
  .carousel__button { display: none; }
  .news { grid-template-columns: 1fr; }
}

/* ---------- 動きを減らす設定 / 印刷 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

@media print {
  .site-info, .site-nav, .site-brand__links, .to-top, .carousel__button, .site-footer__inner { display: none; }
  body { font-size: 11pt; line-height: 1.6; color: #000; }
  a { color: inherit; text-decoration: none; }
  .page-header { background: none; border-bottom: 1px solid #000; }
  .page-body { padding-block: 1rem; }
}