/* BBOLab news components */
:root {
  --ink: #1d1b22;
  --muted: #6b6774;
  --line: #e7e4ec;
  --accent: #5b2a86;          /* 筑波大学の紫に寄せたアクセント */
  --accent-soft: #f3eef8;
  --paper: #5b2a86;
  --award: #a05a00;
  --media: #1f6f78;
  --talk: #3d5a99;
  --book: #3d5a99;
  --event: #6b6774;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
          "Noto Sans JP", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }

/* 言語の切り替え：<html data-lang="en"> で英語 */
html[data-lang="en"] .ja, html:not([data-lang="en"]) .en { display: none !important; }

/* バッジ */
.cat {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .02em;
  padding: 1px 7px;
  border-radius: 3px;
  color: #fff;
  white-space: nowrap;
  line-height: 18px;
}
.cat-paper { background: var(--paper); }
.cat-award { background: var(--award); }
.cat-media { background: var(--media); }
.cat-talk  { background: var(--talk); }
.cat-book  { background: var(--book); }
.cat-event { background: var(--event); }
.venue {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 0 6px;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 3px;
  white-space: nowrap;
  line-height: 18px;
}
.partner { font-size: 12px; color: var(--muted); white-space: nowrap; }

.date {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

/* 言語切り替えボタン */
.langs { display: inline-flex; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; }
.langs button {
  font: inherit; font-size: 12px; border: 0; background: transparent; color: var(--muted);
  padding: 2px 10px; cursor: pointer;
}
.langs button[aria-pressed="true"] { background: var(--accent); color: #fff; }

/* ---------- 埋め込み一覧 ---------- */
body.embed { background: transparent; }
.embed-list { list-style: none; margin: 0; padding: 0; }
.embed-list li { border-bottom: 1px solid var(--line); }
.embed-list a.row {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 2px 14px;
  padding: 10px 4px;
  text-decoration: none;
  color: inherit;
}
.embed-list a.row:hover { background: var(--accent-soft); }
.embed-list a.row:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.embed-list .date { padding-top: 1px; }
.embed-list .main { min-width: 0; }
.embed-list .tags { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 2px; }
.embed-list .title {
  font-size: 15px;
  font-weight: 500;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.embed-foot {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 4px 2px; font-size: 14px;
}
.embed-foot a { text-decoration: none; font-weight: 600; }
.embed-foot a:hover { text-decoration: underline; }

@media (max-width: 520px) {
  /* 埋め込み枠の高さは PC と共通なので，スマホでは件数を減らして収める */
  .embed-list li:nth-child(n+6) { display: none; }
  .embed-list a.row { grid-template-columns: 1fr; padding: 10px 2px; }
  .embed-list .date { font-size: 12px; }
  .embed-list .title { font-size: 14px; }
}

/* ---------- アーカイブ ---------- */
body.archive { background: #fff; }
.wrap { max-width: 860px; margin: 0 auto; padding: 32px 20px 64px; }
.archive header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.archive .lab { font-size: 13px; color: var(--muted); text-decoration: none; }
.archive .lab:hover { text-decoration: underline; }
.archive h1 { font-size: 28px; margin: 4px 0 0; letter-spacing: .01em; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 8px; }
.filters button {
  font: inherit; font-size: 13px; padding: 4px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer;
}
.filters button[aria-pressed="true"] { border-color: var(--accent); background: var(--accent); color: #fff; }
.archive h2 {
  font-size: 15px; color: var(--muted); font-weight: 600; margin: 32px 0 4px;
  padding-bottom: 6px; border-bottom: 2px solid var(--ink);
}
.archive article { padding: 16px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 12px; }
.archive article:target { background: var(--accent-soft); box-shadow: -12px 0 0 var(--accent-soft), 12px 0 0 var(--accent-soft); }
.archive .meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.archive h3 { font-size: 17px; margin: 6px 0 4px; line-height: 1.5; }
.archive p { margin: 4px 0; color: #3a3742; }
.archive .links { display: flex; flex-wrap: wrap; gap: 14px; font-size: 14px; margin-top: 6px; }
.archive .links a::after { content: " ↗"; font-size: 12px; }
.archive footer { margin-top: 40px; font-size: 12px; color: var(--muted); }
.archive .empty { display: none; color: var(--muted); padding: 24px 0; }
@media (max-width: 520px) {
  .wrap { padding: 20px 16px 48px; }
  .archive h1 { font-size: 22px; }
}