/* ==========================================================================
   cms.css — 汎用 Markdown CMS の構造・レイアウト・タイポグラフィ（コア所有）
   このファイルはコアのアップデートで上書きされる。サイト固有の見た目は
   theme.css(トークンの上書き)と site.css 等(サイト所有)に書き、ここは編集しない。
   ========================================================================== */

/* ── デザイントークンの既定値（コア所有） ───────────────────────
   サイトは theme.css で必要なものだけ上書きする。コアで新しいトークンが
   増えても、ここに既定値があるのでサイトの theme.css を更新する必要はない。
   ダークテーマは prefers-color-scheme と [data-theme="dark"] の両方に対応。 */

:root {
  /* 色 */
  --color-bg: #ffffff;
  --color-surface: #f7f8fa;
  --color-surface-alt: #eef1f5;
  --color-border: #dfe3e8;
  --color-text: #1f2530;
  --color-text-muted: #5b6472;
  --color-accent: #2563eb;
  --color-accent-strong: #1d4ed8;
  --color-accent-contrast: #ffffff;
  --color-link: var(--color-accent);

  /* callout(NOTE / TIP / IMPORTANT / WARNING / CAUTION) */
  --callout-note: #2563eb;
  --callout-tip: #16a34a;
  --callout-important: #7c3aed;
  --callout-warning: #d97706;
  --callout-caution: #dc2626;

  /* タイポグラフィ */
  --font-sans: "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Segoe UI", system-ui, sans-serif;
  --font-mono: "SFMono-Regular", "Consolas", "Menlo", monospace;
  --line-height: 1.8;

  /* 寸法 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --container-width: 960px;
  --container-width-wide: 1160px;
  --header-height: 64px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 2px 8px rgba(15, 23, 42, .05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, .1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0e131b;
    --color-surface: #161d28;
    --color-surface-alt: #1e2732;
    --color-border: #2b3543;
    --color-text: #e6e9ee;
    --color-text-muted: #9aa4b2;
    --color-accent: #5b9dff;
    --color-accent-strong: #7db0ff;
    --color-accent-contrast: #0e131b;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-md: 0 6px 18px rgba(0, 0, 0, .5);
  }
}

[data-theme="dark"] {
  --color-bg: #0e131b;
  --color-surface: #161d28;
  --color-surface-alt: #1e2732;
  --color-border: #2b3543;
  --color-text: #e6e9ee;
  --color-text-muted: #9aa4b2;
  --color-accent: #5b9dff;
  --color-accent-strong: #7db0ff;
  --color-accent-contrast: #0e131b;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, .5);
}

/* ── 構造・レイアウト ─────────────────────────────────────── */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: var(--line-height);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, video { max-width: 100%; height: auto; }
img { display: block; }

a { color: var(--color-link); text-decoration: none; }
a:hover { color: var(--color-accent-strong); text-decoration: underline; }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.35; }

code, pre { font-family: var(--font-mono); }
pre {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  font-size: .92em;
  line-height: 1.6;
}
:not(pre) > code {
  background: var(--color-surface-alt);
  border-radius: var(--radius-sm);
  padding: .12em .4em;
  font-size: .9em;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 20px;
}

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

.skip-link {
  position: absolute; left: 8px; top: -48px;
  background: var(--color-accent); color: var(--color-accent-contrast);
  padding: .5rem .9rem; border-radius: var(--radius-sm); z-index: 100;
  transition: top .15s;
}
.skip-link:focus { top: 8px; }

/* ── ヘッダー / ナビ ─────────────────────────────────────── */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex; align-items: center; gap: 1rem;
  min-height: var(--header-height);
}
.site-logo {
  font-weight: 800; font-size: 1.15rem; color: var(--color-text);
  letter-spacing: .02em; flex-shrink: 0;
}
.site-logo:hover { text-decoration: none; color: var(--color-accent); }

.nav-toggle {
  margin-left: auto; display: none;
  width: 40px; height: 40px; padding: 8px;
  background: none; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); cursor: pointer;
}
.nav-toggle__bar {
  display: block; height: 2px; background: var(--color-text);
  border-radius: 2px; margin: 4px 0;
}

.site-nav { margin-left: auto; display: flex; align-items: center; gap: .25rem; }
.site-nav__list { list-style: none; display: flex; gap: .25rem; margin: 0; padding: 0; }
.site-nav__item { position: relative; }
.site-nav__item > a {
  display: block; padding: .55rem .8rem; border-radius: var(--radius-sm);
  color: var(--color-text-muted); font-weight: 600; font-size: .95rem;
}
.site-nav__item > a:hover { color: var(--color-text); background: var(--color-surface); text-decoration: none; }
.site-nav__item.is-active > a { color: var(--color-accent); }

.site-nav__submenu {
  list-style: none; margin: 0; padding: .35rem;
  position: absolute; left: 0; top: 100%; min-width: 220px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(4px);
  transition: opacity .12s, transform .12s, visibility .12s;
}
.site-nav__item.has-children:hover > .site-nav__submenu,
.site-nav__item.has-children:focus-within > .site-nav__submenu {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.site-nav__submenu a {
  display: block; padding: .5rem .7rem; border-radius: var(--radius-sm);
  color: var(--color-text-muted); font-size: .92rem;
}
.site-nav__submenu a:hover { color: var(--color-text); background: var(--color-surface-alt); text-decoration: none; }

.site-nav__locales { margin-left: .5rem; border-left: 1px solid var(--color-border); padding-left: .5rem; }
.site-nav__locales .site-nav__item > a { text-transform: uppercase; font-size: .82rem; letter-spacing: .04em; }

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; inset: var(--header-height) 0 auto 0;
    display: block; flex-direction: column; align-items: stretch;
    background: var(--color-bg); border-bottom: 1px solid var(--color-border);
    padding: .75rem 20px 1.25rem; max-height: calc(100vh - var(--header-height));
    overflow-y: auto; transform: translateY(-120%);
    transition: transform .2s ease; box-shadow: var(--shadow-md);
  }
  .site-nav.is-open { transform: translateY(0); }
  .site-nav__list { flex-direction: column; gap: 0; }
  .site-nav__locales { border-left: 0; border-top: 1px solid var(--color-border); padding-left: 0; margin-left: 0; margin-top: .5rem; padding-top: .5rem; flex-direction: row; }
  .site-nav__submenu {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: 0; border-left: 2px solid var(--color-border);
    border-radius: 0; margin-left: .8rem; display: none;
  }
  .site-nav__item.has-children.is-open > .site-nav__submenu { display: block; }
}

/* ── パンくず ───────────────────────────────────────────── */

.breadcrumb {
  max-width: var(--container-width); margin-inline: auto;
  padding: .8rem 20px 0; font-size: .85rem;
}
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: .35rem; margin: 0; padding: 0; }
.breadcrumb li { color: var(--color-text-muted); }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: .35rem; opacity: .5; }
.breadcrumb li[aria-current="page"] { color: var(--color-text); }

/* ── 本文 ───────────────────────────────────────────────── */

.site-main { padding: 1.5rem 0 4rem; }

.page__header { margin-bottom: 1.5rem; }
.page__hero {
  width: 100%; border-radius: var(--radius-lg);
  border: 1px solid var(--color-border); margin-bottom: 1.25rem;
}
.page h1 { font-size: clamp(1.7rem, 1.2rem + 2vw, 2.3rem); margin: 0 0 .5rem; }
.page__meta { color: var(--color-text-muted); font-size: .85rem; display: flex; gap: 1rem; flex-wrap: wrap; margin: 0; }

.page__body > :first-child { margin-top: 0; }
.page__body h2 {
  font-size: 1.5rem; margin: 2.4rem 0 1rem;
  padding-bottom: .35rem; border-bottom: 2px solid var(--color-border);
  scroll-margin-top: calc(var(--header-height) + 12px);
}
.page__body h3 { font-size: 1.2rem; margin: 1.8rem 0 .8rem; scroll-margin-top: calc(var(--header-height) + 12px); }
.page__body p { margin: 1rem 0; }
.page__body ul, .page__body ol { margin: 1rem 0; padding-left: 1.5rem; }
.page__body li { margin: .35rem 0; }
.page__body blockquote {
  margin: 1.2rem 0; padding: .6rem 1rem;
  border-left: 3px solid var(--color-border); color: var(--color-text-muted);
}
.page__body hr { border: 0; border-top: 1px solid var(--color-border); margin: 2.5rem 0; }
.page__body img { border-radius: var(--radius-md); }

.lede { font-size: 1.08rem; color: var(--color-text-muted); }

/* 目次 */
.toc {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 1rem 1.2rem; margin: 1.5rem 0;
}
.toc__title { font-weight: 700; margin: 0 0 .5rem; font-size: .95rem; }
.toc ol { margin: 0; padding-left: 1.2rem; }
.toc li { margin: .25rem 0; }
.toc a { color: var(--color-text-muted); font-size: .92rem; }
.toc a:hover { color: var(--color-accent); }

/* callout */
.callout {
  --c: var(--callout-note);
  margin: 1.5rem 0; padding: .9rem 1.1rem;
  background: color-mix(in srgb, var(--c) 8%, var(--color-bg));
  border: 1px solid color-mix(in srgb, var(--c) 30%, var(--color-border));
  border-left: 4px solid var(--c); border-radius: var(--radius-md);
}
.callout > :first-child { margin-top: 0; }
.callout > :last-child { margin-bottom: 0; }
.callout--note { --c: var(--callout-note); }
.callout--tip { --c: var(--callout-tip); }
.callout--important { --c: var(--callout-important); }
.callout--warning { --c: var(--callout-warning); }
.callout--caution { --c: var(--callout-caution); }

/* カードグリッド */
.card-grid {
  display: grid; gap: 1rem; margin: 1.5rem 0;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 1.1rem 1.2rem;
}
.card > :first-child { margin-top: 0; }
.card > :last-child { margin-bottom: 0; }
.card h3 { font-size: 1.05rem; margin: 0 0 .5rem; }

/* 子ページ一覧 */
.child-list { list-style: none; display: grid; gap: .6rem; padding: 0; margin: 1.5rem 0; }
.child-list a {
  display: block; padding: .9rem 1.1rem; border-radius: var(--radius-md);
  background: var(--color-surface); border: 1px solid var(--color-border); color: var(--color-text);
}
.child-list a:hover { border-color: var(--color-accent); text-decoration: none; }
.child-list__title { font-weight: 700; display: block; }
.child-list__desc { color: var(--color-text-muted); font-size: .88rem; }

/* サイトマップツリー */
.sitemap-tree { list-style: none; padding: 0; margin: 1.5rem 0; }
.sitemap-tree li { margin: .3rem 0; }

/* テーブル */
.table-wrap { overflow-x: auto; margin: 1.5rem 0; }
table.data-table { border-collapse: collapse; width: 100%; font-size: .92rem; }
table.data-table th, table.data-table td {
  border: 1px solid var(--color-border); padding: .6rem .8rem; text-align: left; vertical-align: top;
}
table.data-table thead th { background: var(--color-surface-alt); position: relative; }
table.data-table thead th[data-sort] { cursor: pointer; user-select: none; }
table.data-table thead th[data-sort]::after { content: " \2195"; opacity: .35; }
table.data-table thead th[data-sort-dir="asc"]::after { content: " \2191"; opacity: 1; }
table.data-table thead th[data-sort-dir="desc"]::after { content: " \2193"; opacity: 1; }
table.data-table tbody tr:nth-child(even) { background: color-mix(in srgb, var(--color-surface) 55%, transparent); }

/* ボタン / figure */
.cms-btn-row { margin: 1.5rem 0; display: flex; flex-wrap: wrap; gap: .75rem; }
.cms-btn {
  display: inline-block; padding: .7rem 1.3rem; border-radius: var(--radius-md);
  background: var(--color-accent); color: var(--color-accent-contrast);
  font-weight: 700; border: 0; cursor: pointer;
}
.cms-btn:hover { background: var(--color-accent-strong); color: var(--color-accent-contrast); text-decoration: none; }
a.cms-link { font-weight: 600; }

.cms-figure { margin: 1.5rem 0; }
.cms-figure figcaption { color: var(--color-text-muted); font-size: .85rem; margin-top: .4rem; text-align: center; }

/* ── フッター ───────────────────────────────────────────── */

.site-footer {
  background: var(--color-surface); border-top: 1px solid var(--color-border);
  margin-top: 3rem; padding: 2.5rem 0 1.5rem;
}
.site-footer__inner {
  display: grid; gap: 1.5rem;
  grid-template-columns: 1.4fr repeat(auto-fit, minmax(140px, 1fr));
}
.site-footer__logo { font-weight: 800; margin: 0 0 .4rem; }
.site-footer__desc { color: var(--color-text-muted); font-size: .88rem; margin: 0; }
.site-footer__heading { font-weight: 700; font-size: .92rem; margin: 0 0 .5rem; }
.site-footer__heading a { color: var(--color-text); }
.site-footer__col ul { list-style: none; margin: 0; padding: 0; }
.site-footer__col li { margin: .3rem 0; }
.site-footer__col a { color: var(--color-text-muted); font-size: .88rem; }
.site-footer__bottom { margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--color-border); }
.site-footer__bottom p { color: var(--color-text-muted); font-size: .82rem; margin: 0; }

/* ── リンクカード（関連記事ブロック風）・周辺スポット ─────────────
   includes/cards.php / includes/geo.php が出力する。配色・角丸はトークンで決まる。 */

.related-card-wrap { margin: 1.9rem 0; }

.related-card {
  position: relative; display: flex; gap: 1rem; align-items: stretch;
  padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  background: var(--color-surface); color: var(--color-text);
  transition: border-color .15s, box-shadow .15s, transform .15s;
}
.related-card:hover {
  color: var(--color-text); text-decoration: none;
  border-color: var(--color-accent); box-shadow: var(--shadow-sm); transform: translateY(-1px);
}
.related-card:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

/* キャプション（既定「あわせて読みたい」）: カードの左上の縁に重ねるラベル */
.related-card__caption {
  position: absolute; top: -.7rem; left: .9rem; z-index: 1;
  padding: .08rem .7rem; border-radius: 999px;
  background: var(--color-accent); color: var(--color-accent-contrast);
  font-size: .72rem; font-weight: 700; letter-spacing: .04em; line-height: 1.6;
}

.related-card__thumb {
  flex: 0 0 clamp(104px, 30%, 210px); aspect-ratio: 16 / 10;
  overflow: hidden; border-radius: var(--radius-sm); background: var(--color-surface-alt);
}
.related-card__thumb img { width: 100%; height: 100%; object-fit: cover; border-radius: 0; }
.related-card__thumb--empty { position: relative; }
.related-card__thumb--empty::after { /* 画像が無いカードの目印（地図ピン風の円） */
  content: ""; position: absolute; inset: 0; margin: auto; width: 28px; height: 28px;
  border: 3px solid var(--color-border); border-radius: 50%;
}

.related-card__body { display: flex; flex-direction: column; justify-content: center; gap: .3rem; min-width: 0; flex: 1; }
.related-card__title, .related-card__excerpt {
  display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; overflow-wrap: anywhere;
}
.related-card__title { -webkit-line-clamp: 2; font-weight: 700; line-height: 1.5; }
.related-card__excerpt { -webkit-line-clamp: 2; color: var(--color-text-muted); font-size: .85rem; line-height: 1.65; }
.related-card__meta { color: var(--color-accent); font-size: .8rem; font-weight: 700; }
.related-card__site { align-self: flex-end; color: var(--color-text-muted); font-size: .72rem; }

@media (max-width: 560px) {
  .related-card { flex-direction: column; }
  .related-card__thumb { flex-basis: auto; width: 100%; }
}

/* テキストリンク版 */
.related-text { margin: 1.25rem 0; }
.related-text__caption {
  display: inline-block; margin-right: .6rem; padding: 0 .6rem; border-radius: 999px;
  background: var(--color-accent); color: var(--color-accent-contrast);
  font-size: .72rem; font-weight: 700; line-height: 1.7; vertical-align: .08em;
}
.related-text__meta { margin-left: .6rem; color: var(--color-text-muted); font-size: .82rem; }

/* 周辺スポット */
.nearby { margin: 2.6rem 0 1rem; }
.nearby__title {
  font-size: 1.5rem; margin: 0 0 1.4rem; padding-bottom: .35rem; border-bottom: 2px solid var(--color-border);
}
.nearby__list { display: grid; gap: 1.4rem; grid-template-columns: 1fr; }
.nearby .related-card-wrap { margin: 0; }
.nearby .related-card { height: 100%; }
.nearby--text .nearby__list { gap: 0; }
.nearby--text .related-text { margin: .35rem 0; }
@media (min-width: 900px) {
  .nearby--card .nearby__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ── ページ種別ごとの微調整 ─────────────────────────────── */
.page--section .container, .page--home .container { }

@media (min-width: 1100px) {
  .page--home .page__body .card-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
}