/* 宇宙法研究会サイト 共通スタイル */
:root {
  --navy: #223878;
  --navy-2: #0b599b;
  --accent: #0b599b;
  --accent-2: #dce8ff;
  --text: #444444;
  --muted: #5a6478;
  --bg: #fafafa;
  --card: #ffffff;
  --border: #dfe5f0;
  --radius: 4px;
  --font: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.75; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

.container { width: 70%; max-width: 1000px; margin: 0 auto; }

/* SDF本体と揃えたロゴ・白いヘッダー・紺のナビゲーション */
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 200; padding: 12px 20px; background: #fff; color: var(--navy); }
.skip-link:focus { top: 16px; }
.sdf-header { position: sticky; top: 0; z-index: 100; background: #fafafa; border-top: 10px solid var(--navy); box-shadow: 0 2px 4px #0003; }
.sdf-header-inner { min-height: 72px; max-width: 1280px; margin: 0 auto; padding: 6px 5%; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.sdf-logo { display: block; flex-shrink: 0; line-height: 0; }
.sdf-logo img { width: 144px; height: 60px; }
.sdf-global-nav { display: flex; align-items: center; gap: 30px; }
.sdf-global-nav a { font-size: .9rem; color: #333; white-space: nowrap; padding: 14px 0; }
.sdf-global-nav a.current { color: var(--navy); border-bottom: 2px solid var(--navy); }
.sdf-menu-toggle { display: none; background: transparent; border: 1px solid var(--navy); border-radius: 4px; color: var(--navy); padding: 9px 12px; font: inherit; cursor: pointer; }
.sdf-menu-toggle[hidden] { display: none; }
.spacelaw-navigation { border-bottom: 1px solid var(--border); background: #fff; }
.local-nav-inner { width: 70%; max-width: 1000px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px 24px; padding: 18px 0; }
.local-brand { font-size: 1.05rem; color: var(--navy); font-weight: 700; }
.nav { display: flex; gap: 8px 18px; flex-wrap: wrap; }
.nav a { color: var(--muted); font-size: .85rem; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a.active, .nav a:hover { color: var(--navy); text-decoration: none; border-bottom-color: var(--navy); }
.breadcrumbs { padding-top: 22px; font-size: .75rem; color: var(--muted); overflow-wrap: anywhere; }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

/* SDFの下層ページに揃えた白地・左揃えのタイトル */
.hero { width: 70%; max-width: 1000px; margin: 0 auto; padding: 30px 0 40px; color: var(--text); border-bottom: 2px solid var(--navy); }
.hero h1 { font-size: 2.5rem; font-weight: 500; line-height: 1.5; color: var(--navy); margin-bottom: 18px; overflow-wrap: anywhere; }
.hero p { max-width: 820px; margin-bottom: 24px; font-size: .95rem; }
.hero .en { font-size: .75rem; letter-spacing: .16em; color: var(--muted); display: block; margin-bottom: 8px; }
.btn { display: inline-block; max-width: 100%; background: var(--navy); color: #fff; font-weight: 700; padding: 12px 24px; border-radius: 4px; transition: background .2s; text-align: center; }
.btn:hover { background: var(--navy-2); text-decoration: none; }
.btn.ghost { background: #fff; border: 1px solid var(--navy); color: var(--navy); margin-left: 10px; }

/* Sections */
.section { padding: 48px 0; }
.section.alt { background: #fff; }
.section h2 { text-align: left; font-size: 1.4rem; color: var(--navy); margin-bottom: 8px; letter-spacing: .08em; }
.section .section-en { display: block; text-align: left; color: var(--accent); font-size: .75rem; letter-spacing: .25em; margin-bottom: 32px; }
.section p.lead { max-width: 820px; margin: 0 0 24px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); gap: 20px; margin-top: 12px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; box-shadow: 0 1px 4px rgba(15,30,80,.06);
}
.card h3 { font-size: 1.02rem; margin-bottom: 8px; color: var(--navy); }
.card p { font-size: .9rem; color: var(--muted); }

/* Database page */
.db-toolbar { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 18px; align-items: center; }
.db-toolbar input[type="search"] {
  flex: 1 1 260px; min-width: 0; width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px;
  font-size: .95rem; font-family: var(--font); background: #fff;
}
.tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.tab {
  border: 1px solid var(--border); background: #fff; color: var(--text);
  padding: 8px 16px; border-radius: 999px; cursor: pointer; font-size: .85rem; font-family: var(--font);
}
.tab.active { background: var(--navy); color: #fff; border-color: var(--navy); }

.db-count { font-size: .8rem; color: var(--muted); margin-bottom: 14px; }

.entry { border-left: 4px solid var(--accent); margin-bottom: 16px; }
.entry .meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 6px; }
.badge { font-size: .7rem; padding: 2px 10px; border-radius: 999px; background: #e8eefc; color: var(--navy); font-weight: 700; }
.badge.status { background: #eef7ee; color: #24632a; }
.entry .date { font-size: .78rem; color: var(--muted); }
.entry h3 { font-size: 1.05rem; color: var(--navy); }
.entry .official { font-size: .78rem; color: var(--muted); margin-bottom: 6px; }
.entry .summary { font-size: .9rem; margin: 8px 0 10px; }
.entry .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.entry .tags span { font-size: .72rem; color: var(--accent); background: #f0f5ff; padding: 1px 8px; border-radius: 4px; }
.entry .links a { font-size: .85rem; margin-right: 14px; }
.entry .links a::before { content: "→ "; }
.no-results { text-align: center; color: var(--muted); padding: 40px 0; }
.group-head {
  font-size: 1rem; color: var(--navy); margin: 30px 0 12px;
  padding-bottom: 6px; border-bottom: 2px solid var(--accent);
  display: flex; align-items: center; gap: 8px;
}
.group-head::before { content: "■"; color: var(--accent); font-size: .7rem; }

@media (max-width: 1080px) {
  .container, .hero, .local-nav-inner { width: 85%; }
  .sdf-header-inner { gap: 14px; flex-wrap: wrap; }
  .sdf-menu-toggle { display: block; font-size: .85rem; }
  .sdf-global-nav { width: 100%; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 20px; padding-bottom: 12px; }
  .js-shell .sdf-global-nav:not(.is-open) { display: none; }
  .sdf-global-nav a { padding: 10px 0; }
}
@media (max-width: 640px) {
  .container, .hero, .local-nav-inner { width: 90%; }
  .hero { padding: 24px 0 30px; }
  .hero h1 { font-size: 1.65rem; }
  .hero .btn { margin: 8px 8px 0 0; }
  .local-nav-inner { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .nav { gap: 6px 14px; }
  .nav a { font-size: .8rem; }
  .section { padding: 36px 0; }
  .section h2 { font-size: 1.25rem; }
  .group-head { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* お知らせ枠 */
.notice { background: #fff; border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 8px; padding: 14px 18px; font-size: .85rem; margin-top: 26px; }
.group-head small, .db-major small { color: var(--muted); font-weight: 400; font-size: .75rem; }

/* データベース: 大分類 → 小分類 → 行 */
.db-major { font-size: 1.2rem; color: var(--navy); margin: 40px 0 4px; letter-spacing: .05em; padding-left: 10px; border-left: 5px solid var(--navy); }
.doc-list { background: #fff; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.doc-row { border-bottom: 1px solid var(--border); }
.doc-row:last-child { border-bottom: none; }
.doc-row > summary, div.doc-row { display: flex; gap: 14px; align-items: center; justify-content: space-between; padding: 10px 14px; list-style: none; }
.doc-row > summary::-webkit-details-marker { display: none; }
.doc-row.has-summary > summary { cursor: pointer; }
.doc-row.has-summary > summary .doc-title::before { content: "▶"; font-size: .6rem; color: var(--accent); margin-right: 6px; display: inline-block; transition: transform .15s; vertical-align: 2px; }
.doc-row.has-summary[open] > summary .doc-title::before { transform: rotate(90deg); }
.doc-row:hover > summary, div.doc-row:hover { background: #f6f9ff; }
.doc-main { flex: 1 1 0; min-width: 0; overflow-wrap: anywhere; }
.doc-title { font-size: .92rem; font-weight: 700; color: var(--navy); }
.doc-en { display: inline-block; max-width: 100%; font-size: .74rem; color: var(--muted); font-weight: 400; margin-left: 6px; }
.doc-official { font-size: .74rem; color: var(--muted); }
.doc-meta { font-size: .74rem; color: var(--muted); margin-top: 2px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
/* 長い資料名も右列内で折り返し、タイトルへのはみ出しを防ぐ。 */
.doc-links { flex: 0 1 46%; min-width: 0; display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; max-width: 46%; }
.doc-link { font-size: .74rem; border: 1px solid var(--accent); color: var(--accent); border-radius: 999px; padding: 2px 10px; min-width: 0; max-width: 100%; white-space: normal; overflow-wrap: anywhere; }
.doc-link:hover { background: var(--accent); color: #fff; text-decoration: none; }
.doc-body { padding: 4px 16px 14px 32px; font-size: .88rem; background: #fafcff; }
.doc-body p { margin-bottom: 8px; }
.doc-body .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.doc-body .tags span { font-size: .72rem; color: var(--accent); background: #f0f5ff; padding: 1px 8px; border-radius: 4px; }
.badge.keio { background: #fff4e5; color: #8a5300; }
.badge.domestic { background: #fdecef; color: #9b1c31; }
@media (max-width: 640px) {
  .doc-row > summary, div.doc-row { flex-direction: column; align-items: flex-start; }
  .doc-main { width: 100%; }
  .doc-links { flex: 0 1 auto; width: 100%; max-width: 100%; justify-content: flex-start; }
}

/* 用語解説の本文 */
.doc-body .doc-lead { font-weight: 700; color: var(--navy); }
.doc-body p { line-height: 1.9; }
.doc-refs { margin: 10px 0 12px; padding: 10px 14px; background: #fff; border: 1px solid var(--border); border-radius: 6px; }
.doc-refs-title { font-size: .76rem; font-weight: 700; color: var(--muted); margin-bottom: 4px; }
.doc-refs ul { margin: 0; padding-left: 1.2em; font-size: .8rem; }
.doc-refs li { margin: 2px 0; }