:root {
  color-scheme: light dark;
  --bg: #0b1220;
  --panel: #111827;
  --panel-2: #0f172a;
  --border: #334155;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --dim: #cbd5e1;
  --link: #93c5fd;
  --accent: #38bdf8;
}

* { box-sizing: border-box; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar .brand { font-weight: 700; font-size: 1.15rem; color: var(--text); }
.topbar nav { display: flex; gap: 1.25rem; }

main { max-width: 1040px; margin: 0 auto; padding: 2rem 1.25rem 3rem; }

.hero h1 { font-size: 2.2rem; margin: 0 0 0.5rem; }
.hero p { color: var(--dim); max-width: 720px; }

.count { color: var(--muted); font-size: 0.9rem; margin: 1.5rem 0 0.5rem; }

.grid {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  padding: 1.1rem 1.1rem 0.9rem;
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card-link { color: inherit; }
.card-link:hover { text-decoration: none; }
.card h2 { font-size: 1.15rem; margin: 0 0 0.4rem; color: var(--text); }
.card .desc { color: var(--dim); font-size: 0.92rem; margin: 0 0 0.8rem; flex: 1; }

.meta { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }
.tag {
  font-size: 0.75rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  padding: 0.12rem 0.5rem;
  white-space: nowrap;
}
.tag.lang { color: var(--accent); border-color: var(--accent); }
.tag.archived { color: #fbbf24; border-color: #fbbf24; }
.tag.muted { border-color: transparent; }
.tag.link { color: var(--link); }

.topics { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.6rem; }
.topic { font-size: 0.72rem; color: var(--muted); background: var(--panel-2); border-radius: 0.4rem; padding: 0.1rem 0.45rem; }

.links { display: flex; gap: 1rem; margin-top: 0.8rem; padding-top: 0.7rem; border-top: 1px solid var(--border); font-size: 0.85rem; }

.empty { color: var(--muted); background: var(--panel); border: 1px solid var(--border); border-radius: 0.5rem; padding: 1rem 1.25rem; }

/* ---- doc / readme subpage ---- */
.crumb { font-size: 0.9rem; margin: 0 0 1rem; }
.doc-head { border-bottom: 1px solid var(--border); padding-bottom: 1.2rem; margin-bottom: 1.5rem; }
.doc-head h1 { font-size: 2rem; margin: 0 0 0.4rem; }
.doc-head .lead { color: var(--dim); font-size: 1.05rem; margin: 0 0 0.8rem; }

.readme { max-width: 820px; }
.readme h1, .readme h2 { border-bottom: 1px solid var(--border); padding-bottom: 0.3rem; margin-top: 2rem; }
.readme h1 { font-size: 1.7rem; }
.readme h2 { font-size: 1.35rem; }
.readme h3 { font-size: 1.1rem; }
.readme img { max-width: 100%; height: auto; border-radius: 0.4rem; }
.readme code {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 0.3rem;
  padding: 0.1rem 0.35rem;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
}
.readme pre {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem;
  overflow-x: auto;
}
.readme pre code { background: transparent; border: 0; padding: 0; }
.readme table { border-collapse: collapse; width: 100%; margin: 1rem 0; }
.readme th, .readme td { border: 1px solid var(--border); padding: 0.5rem 0.7rem; text-align: left; }
.readme th { background: var(--panel-2); }
.readme blockquote { border-left: 3px solid var(--border); margin: 1rem 0; padding: 0.2rem 1rem; color: var(--muted); }

.foot {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 520px) {
  .topbar { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .hero h1 { font-size: 1.7rem; }
}