/* ============================================================
   All the Agents — design system
   Dark, GitHub-adjacent but warmer. Tokens first, then
   components: nav, hero, cards, tables, badges, agent page,
   filters, pagination, footer, responsive.
   ============================================================ */

:root {
  /* surfaces */
  --bg: #0b0e14;
  --bg-raised: #11151d;
  --bg-card: #151a24;
  --bg-hover: #1b2230;
  --bg-inset: #0e1218;
  --border: #232b3a;
  --border-strong: #2e3850;

  /* text */
  --text: #c4cdd9;
  --text-bright: #f0f4fa;
  --text-muted: #8593a8;
  --text-faint: #5d6a7f;

  /* accents */
  --accent: #5ea1ff;
  --accent-hover: #85b6ff;
  --accent-dim: rgba(94, 161, 255, 0.12);

  /* category colors */
  --cat-agent: #5ea1ff;
  --cat-multiplexer: #b98cff;
  --cat-agent-sdk: #4fd1a5;
  --cat-total: #8593a8;

  /* status colors */
  --ok: #3fb950;
  --warn: #d29922;
  --bad: #f85149;

  /* shape + motion */
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
  --transition: 150ms ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

h1, h2, h3, h4 { color: var(--text-bright); line-height: 1.25; letter-spacing: -0.01em; }

.container { max-width: 1240px; margin: 0 auto; padding: 2.5rem 2rem 4rem; flex: 1 0 auto; width: 100%; }

/* ============ Nav ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0 1.5rem;
  height: 56px;
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text-bright);
  margin-right: 1.25rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.nav-logo:hover { color: var(--accent); text-decoration: none; }
.nav-link {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.375rem 0.7rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--text-bright); background: var(--bg-hover); text-decoration: none; }
.nav-link.active {
  color: var(--text-bright);
  background: var(--bg-hover);
  box-shadow: inset 0 -2px 0 var(--accent);
}

/* ============ Hero ============ */
.hero {
  text-align: center;
  padding: 3.5rem 0 2.5rem;
  margin-bottom: 2rem;
}
.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.6rem;
  background: linear-gradient(180deg, var(--text-bright) 70%, #9fb1cc);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 1.25rem;
}
.hero-links { font-size: 0.95rem; }
.hero-links a { color: var(--text-muted); border-bottom: 1px solid var(--border); }
.hero-links a:hover { color: var(--text-bright); border-bottom-color: currentColor; }

/* ============ Stat cards (category cards) ============ */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.stat-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
  text-align: left;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
  text-decoration: none;
}
.stat-card .stat-icon { font-size: 1.4rem; margin-bottom: 0.5rem; }
.stat-card h3 {
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.stat-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}
.stat-card.cat-agent h3 { color: var(--cat-agent); }
.stat-card.cat-multiplexer h3 { color: var(--cat-multiplexer); }
.stat-card.cat-agent-sdk h3 { color: var(--cat-agent-sdk); }
.stat-card.cat-total h3 { color: var(--cat-total); }

/* ============ Search ============ */
.search-section { margin: 0 auto 3rem; max-width: 680px; }
.search-input {
  width: 100%;
  padding: 0.9rem 1.25rem 0.9rem 3rem;
  font-size: 1.05rem;
  font-family: inherit;
  background: var(--bg-card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%238593a8' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E") 1.05rem center no-repeat;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-bright);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.search-input::placeholder { color: var(--text-faint); }
.search-results { margin-top: 1rem; text-align: left; }
.search-result {
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  background: var(--bg-card);
}
.search-result:hover { border-color: var(--border-strong); background: var(--bg-hover); }
.result-meta { color: var(--text-muted); font-size: 0.83rem; margin-left: 0.5rem; }
.result-desc { color: var(--text-muted); font-size: 0.875rem; margin-top: 0.3rem; }

/* ============ Filter bar ============ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 1.25rem;
  padding: 0.9rem;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: sticky;
  top: 64px;
  z-index: 40;
}
.filter-bar .filter-search {
  flex: 1 1 220px;
  min-width: 180px;
  padding: 0.55rem 0.85rem;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-bright);
}
.filter-bar .filter-search:focus { outline: none; border-color: var(--accent); }
.filter-bar select {
  padding: 0.55rem 0.7rem;
  font-size: 0.875rem;
  font-family: inherit;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
}
.filter-bar select:focus { outline: none; border-color: var(--accent); }
.filter-count { color: var(--text-muted); font-size: 0.85rem; margin-left: auto; white-space: nowrap; }
.filter-empty {
  padding: 3rem 1rem;
  text-align: center;
  color: var(--text-muted);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

/* ============ Cards grid (list view) ============ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 0.9rem;
  margin-bottom: 2rem;
}
.agent-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
/* list-view.js toggles [hidden] to paginate/filter; beat .agent-card's display */
.agent-card[hidden] { display: none; }
/* Before list-view.js runs (or with JS off), cap the grid at one default page
   so /all/ doesn't paint 1,347 cards and reflow. */
.card-grid:not(.js-paginated) > .agent-card:nth-child(n+51) { display: none; }
.agent-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
  text-decoration: none;
}
.agent-card .card-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}
.agent-card .card-name {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: -0.01em;
}
.agent-card:hover .card-name { color: var(--accent); }
.agent-card .card-stars {
  color: var(--warn);
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
}
.agent-card .card-desc {
  color: var(--text-muted);
  font-size: 0.865rem;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.6em;
}
.agent-card .card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 0.35rem;
  font-size: 0.78rem;
  color: var(--text-faint);
  align-items: center;
}
.card-meta .dot { color: var(--text-faint); }

/* ============ Badges ============ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.18rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.badge-platform { background: var(--bg-inset); border: 1px solid var(--border); color: var(--text-muted); }

.badge-cat { border: 1px solid transparent; }
.badge-cat-agent { background: rgba(94, 161, 255, 0.13); color: var(--cat-agent); border-color: rgba(94, 161, 255, 0.3); }
.badge-cat-multiplexer { background: rgba(185, 140, 255, 0.13); color: var(--cat-multiplexer); border-color: rgba(185, 140, 255, 0.3); }
.badge-cat-agent-sdk { background: rgba(79, 209, 165, 0.13); color: var(--cat-agent-sdk); border-color: rgba(79, 209, 165, 0.3); }

.badge-status { text-transform: capitalize; }
.badge-status-active { background: rgba(63, 185, 80, 0.13); color: var(--ok); }
.badge-status-dormant { background: rgba(210, 153, 34, 0.13); color: var(--warn); }
.badge-status-dead { background: rgba(248, 81, 73, 0.13); color: var(--bad); }
.badge-status-acquired { background: rgba(185, 140, 255, 0.13); color: var(--cat-multiplexer); }
.badge-status-renamed { background: rgba(94, 161, 255, 0.13); color: var(--accent); }

/* ============ Tables (browse pages) ============ */
.table-wrap { overflow-x: auto; }
.agent-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}
.agent-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 2px solid var(--border-strong);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.agent-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.agent-table tbody tr { transition: background var(--transition); }
.agent-table tbody tr:hover { background: var(--bg-hover); }
.agent-table a { font-weight: 600; }

/* ============ Page headers ============ */
.page-header { margin-bottom: 1.75rem; }
.page-header h1 { font-size: 1.9rem; font-weight: 800; letter-spacing: -0.02em; }
.page-header .page-sub { color: var(--text-muted); margin-top: 0.35rem; font-size: 1rem; }

/* ============ Prose pages (About) ============ */
.prose { max-width: 760px; }
.prose p, .prose ul { margin-bottom: 1.1rem; line-height: 1.65; }
.prose h2 {
  font-size: 1.25rem;
  margin: 2.25rem 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.prose ul { padding-left: 1.4rem; }
.prose li { margin-bottom: 0.6rem; }
.prose li .badge { margin-right: 0.35rem; vertical-align: middle; }
.prose strong { color: var(--text-bright); }

/* ============ Agent detail page ============ */
.agent-page { max-width: 1080px; margin: 0 auto; }
.agent-header { margin-bottom: 1.5rem; }
.agent-header h1 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
}
.agent-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 0.75rem;
}
.meta-item strong { color: var(--text); font-weight: 600; }
.agent-platforms { margin: 1rem 0; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.agent-links { margin: 1.5rem 0; display: flex; gap: 0.75rem; flex-wrap: wrap; }

.agent-body { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 2.5rem; align-items: start; }
.agent-main { min-width: 0; }
.agent-description { margin-bottom: 2.5rem; }
.agent-description h2 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.agent-side { position: sticky; top: 76px; }
.fact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.fact-card h3 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.fact-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}
.fact-row:last-child { border-bottom: none; }
.fact-row .fact-key { color: var(--text-muted); white-space: nowrap; }
.fact-row .fact-val { color: var(--text); text-align: right; font-weight: 500; word-break: break-word; }
.fact-row .fact-val a { word-break: break-all; }

.related-card { font-size: 0.875rem; }
.related-card ul { list-style: none; }
.related-card li { padding: 0.3rem 0; }

/* ============ Buttons ============ */
.btn {
  padding: 0.55rem 1.35rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.925rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: #08101f; }
.btn-primary:hover { background: var(--accent-hover); color: #08101f; }
.btn-secondary { background: var(--bg-card); border: 1px solid var(--border); color: var(--text); }
.btn-secondary:hover { background: var(--bg-hover); border-color: var(--border-strong); }

/* ============ Groups (by-license, by-maker, etc.) ============ */
.license-group, .platform-group, .maker-group { margin-bottom: 2.25rem; }
.license-group h2, .platform-group h2, .maker-group h2 {
  font-size: 1.2rem;
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.group-count {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  padding: 0.1rem 0.6rem;
  border-radius: 999px;
}

.agent-list { list-style: none; }
.agent-list li { padding: 0.3rem 0; }

/* ============ Pagination ============ */
.pagination { display: flex; gap: 0.4rem; justify-content: center; margin: 2.5rem 0; flex-wrap: wrap; }
.pagination:empty { display: none; }
.pagination a, .page-current {
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  min-width: 2.4rem;
  text-align: center;
}
.pagination a:hover { background: var(--bg-hover); border-color: var(--border-strong); text-decoration: none; }
.page-ellipsis { padding: 0.45rem 0.3rem; color: var(--text-faint); align-self: center; }
.page-current { background: var(--accent); color: #08101f; border-color: var(--accent); font-weight: 700; }

/* ============ Footer ============ */
.footer {
  text-align: center;
  padding: 2.25rem 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.875rem;
  background: var(--bg-raised);
  flex-shrink: 0;
}

/* ============ Agent edit footer ============ */
.agent-edit-footer { margin-top: 3rem; padding-top: 1.25rem; border-top: 1px solid var(--border); }
.agent-edit-footer p { color: var(--text-muted); font-size: 0.85rem; margin: 0; }

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .agent-body { grid-template-columns: 1fr; }
  .agent-side { position: static; }
}

@media (max-width: 700px) {
  .container { padding: 1.5rem 1rem 3rem; }
  .nav { padding: 0 0.75rem; overflow-x: auto; }
  .nav-logo { margin-right: 0.5rem; }
  .nav-link { padding: 0.3rem 0.5rem; }
  .hero { padding: 2.25rem 0 1.75rem; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .filter-bar { position: static; }
  .filter-bar .filter-search { flex-basis: 100%; }
  .card-grid { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  .stats { grid-template-columns: 1fr; }
}