:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --bg-card: #ffffff;
  --fg: #1a1d21;
  --fg-soft: #5b626b;
  --border: #e3e6ea;
  --accent: #3858e9;
  --accent-fg: #ffffff;
  --audited: #1a7f5a;
  --unaudited: #9a6b00;
  --radius: 8px;
  --maxw: 1180px;
  font-size: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --bg-soft: #161a20;
    --bg-card: #161a20;
    --fg: #e7eaee;
    --fg-soft: #99a1ad;
    --border: #262c35;
    --accent: #6b8afd;
    --accent-fg: #0f1115;
    --audited: #4ec9a0;
    --unaudited: #d6a83a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1rem clamp(1rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
}
.site-header .brand { font-weight: 700; font-size: 1.15rem; color: var(--fg); }
.site-header nav { display: flex; gap: 1.25rem; }

main { max-width: var(--maxw); margin: 0 auto; padding: clamp(1rem, 4vw, 2.5rem); }

.intro { margin-bottom: 2rem; }
.intro h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); margin: 0 0 0.5rem; }
.lede { color: var(--fg-soft); font-size: 1.05rem; max-width: 70ch; }

.search { margin-top: 1.25rem; max-width: 36rem; }
.search pagefind-input { display: block; }
.search pagefind-results { display: block; margin-top: 0.75rem; }

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: flex-end;
  padding: 1rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
}
.filters label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--fg-soft);
}
.filters select,
.filters input {
  font-size: 0.95rem;
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  text-transform: none;
  letter-spacing: normal;
}
.filters .text-filter { flex: 1 1 12rem; }
.filters .text-filter input { width: 100%; }
.filters .reset {
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
}
.filters .reset:hover { border-color: var(--accent); }

table.catalog {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
table.catalog th,
table.catalog td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.catalog thead th {
  background: var(--bg-soft);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  position: sticky;
  top: 0;
}
table.catalog thead th[data-dir="asc"]::after { content: " \2191"; color: var(--accent); }
table.catalog thead th[data-dir="desc"]::after { content: " \2193"; color: var(--accent); }
table.catalog tbody tr:hover { background: var(--bg-soft); }

.count { color: var(--fg-soft); font-size: 0.85rem; margin-top: 0.75rem; }
.muted { color: var(--fg-soft); }

.badge {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 600;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--fg-soft);
  white-space: nowrap;
}
.badge.eco { color: var(--fg); }
.badge.eco-ethereum { background: rgba(98, 126, 234, 0.16); border-color: rgba(98, 126, 234, 0.4); }
.badge.eco-bitcoin { background: rgba(247, 147, 26, 0.16); border-color: rgba(247, 147, 26, 0.4); }
.badge.eco-solana { background: rgba(20, 241, 149, 0.16); border-color: rgba(20, 241, 149, 0.4); }
.badge.status-final { color: var(--audited); }
.badge.status-withdrawn, .badge.status-stagnant, .badge.status-superseded { color: var(--unaudited); }
.badge.audited { color: var(--audited); border-color: var(--audited); }
.badge.unaudited { color: var(--unaudited); border-color: var(--unaudited); }
.badge.primitive { background: rgba(110, 138, 253, 0.16); color: var(--fg); }
.badge.kind-spec { background: rgba(110, 138, 253, 0.10); color: var(--fg-soft); border-style: dashed; }
.badge.proven { background: rgba(20, 241, 149, 0.18); color: var(--audited); border-color: rgba(20, 241, 149, 0.5); }

.legend { color: var(--fg-soft); font-size: 0.92rem; margin-top: 0.75rem; }
.legend .badge.proven { margin-right: 0.15rem; }

.crumbs { color: var(--fg-soft); font-size: 0.9rem; margin-bottom: 1rem; }
.crumbs span { margin: 0 0.35rem; }

.entry-header h1 { margin: 0; font-size: clamp(1.6rem, 4vw, 2.2rem); }
.entry-header .subtitle { color: var(--fg-soft); margin: 0.25rem 0 0.75rem; font-size: 1.05rem; }
.badges { display: flex; flex-wrap: wrap; gap: 0.4rem; }

dl.meta { display: grid; gap: 0.5rem; margin: 1.5rem 0; }
dl.meta > div { display: grid; grid-template-columns: minmax(8rem, 12rem) 1fr; gap: 0.5rem 1rem; }
dl.meta dt { color: var(--fg-soft); font-weight: 600; }
dl.meta dd { margin: 0; word-break: break-word; }

.notes { margin: 1.5rem 0; max-width: 78ch; }
.notes p { margin: 0 0 0.75rem; }

section h2 { font-size: 1.25rem; border-bottom: 1px solid var(--border); padding-bottom: 0.35rem; margin-top: 2rem; }

ul.impls { list-style: none; padding: 0; margin: 0.75rem 0; display: grid; gap: 0.5rem; }
ul.impls li { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.impl-name { font-weight: 600; }
.lang { font-size: 0.78rem; color: var(--fg-soft); text-transform: uppercase; letter-spacing: 0.03em; }
.audit-link { font-size: 0.82rem; }
.gap { color: var(--unaudited); }

dl.relationships { display: grid; gap: 0.5rem; margin: 0.75rem 0; }
dl.relationships .rel { display: grid; grid-template-columns: minmax(8rem, 12rem) 1fr; gap: 0.5rem 1rem; }
dl.relationships dt { color: var(--fg-soft); font-weight: 600; }
dl.relationships dd { margin: 0; }

ul.sources { padding-left: 1.1rem; }
ul.sources li { word-break: break-word; }

.rosetta-group { margin: 2rem 0; }
.rosetta-group > header { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; border-bottom: 1px solid var(--border); padding-bottom: 0.4rem; }
.rosetta-group h2 { border: none; margin: 0; font-size: 1.4rem; }
.ecosystem-tags { display: flex; gap: 0.4rem; margin: 0; }
.rosetta-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 1rem; margin-top: 1rem; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; }
.card h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.card-title { color: var(--fg-soft); font-size: 0.88rem; margin: 0.5rem 0; }

.site-footer {
  max-width: var(--maxw);
  margin: 2rem auto 0;
  padding: 1.5rem clamp(1rem, 4vw, 2.5rem);
  border-top: 1px solid var(--border);
  color: var(--fg-soft);
  font-size: 0.85rem;
}

@media (max-width: 720px) {
  table.catalog { display: block; overflow-x: auto; white-space: nowrap; }
  dl.meta > div, dl.relationships .rel { grid-template-columns: 1fr; gap: 0.15rem; }
}