/* ---- Theme tokens ---- */
:root {
  --accent: #c96442;
  --accent-soft: color-mix(in srgb, var(--accent) 14%, transparent);
  --accent-line: color-mix(in srgb, var(--accent) 34%, transparent);

  --bg: #fbfaf8;
  --bg-elev: #ffffff;
  --bg-sunken: #f2efea;
  --text: #1c1a17;
  --text-soft: #625c54;
  --text-faint: #938b80;
  --border: #e7e2da;
  --border-strong: #d8d1c6;
  --shadow: 0 1px 2px rgba(30, 25, 20, .05), 0 8px 24px -14px rgba(30, 25, 20, .18);
  --radius: 14px;
  --radius-sm: 9px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --maxw: 1240px;
}
:root[data-theme="dark"] {
  --accent-soft: color-mix(in srgb, var(--accent) 22%, transparent);
  --accent-line: color-mix(in srgb, var(--accent) 46%, transparent);
  --bg: #17150f;
  --bg-elev: #201d16;
  --bg-sunken: #12100b;
  --text: #f2ede4;
  --text-soft: #b8afa2;
  --text-faint: #8a8175;
  --border: #322d24;
  --border-strong: #423b30;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 12px 30px -18px rgba(0,0,0,.7);
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --accent-soft: color-mix(in srgb, var(--accent) 22%, transparent);
    --accent-line: color-mix(in srgb, var(--accent) 46%, transparent);
    --bg: #17150f; --bg-elev: #201d16; --bg-sunken: #12100b;
    --text: #f2ede4; --text-soft: #b8afa2; --text-faint: #8a8175;
    --border: #322d24; --border-strong: #423b30;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 12px 30px -18px rgba(0,0,0,.7);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 650; letter-spacing: -.01em; }
button { font-family: inherit; }

.skip {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--accent); color: #fff; padding: 8px 14px; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

/* ---- Top bar ---- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 11px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; }
.brand-mark {
  width: 24px; height: 24px; border-radius: 7px; flex: none;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 55%, #000));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.15);
  position: relative;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 6px;
  border-radius: 3px; border: 2px solid rgba(255,255,255,.9); border-right-color: transparent; border-bottom-color: transparent;
}
.brand-text { font-size: 15px; }
.topbar-actions { display: flex; align-items: center; gap: 8px; }

.btn {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--border-strong); background: var(--bg-elev); color: var(--text);
  padding: 7px 12px; border-radius: 9px; font-size: 13.5px; font-weight: 550;
  cursor: pointer; text-decoration: none; transition: .14s ease; white-space: nowrap;
}
.btn:hover { border-color: var(--accent-line); background: var(--accent-soft); }
.btn.ghost { background: transparent; }
.btn.icon { padding: 7px; }
.btn.small { padding: 5px 10px; font-size: 12.5px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.05); background: var(--accent); }
.link-btn {
  background: none; border: none; color: var(--accent); cursor: pointer;
  font: inherit; font-size: 12.5px; padding: 0; text-decoration: underline; text-underline-offset: 2px;
}

/* theme icon swap */
.icon-moon { display: none; }
:root[data-theme="dark"] .icon-sun { display: none; }
:root[data-theme="dark"] .icon-moon { display: inline; }
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] .icon-sun { display: none; }
  :root[data-theme="auto"] .icon-moon { display: inline; }
}

/* ---- Hero ---- */
.hero { max-width: 800px; margin: 0 auto; padding: 46px 20px 26px; text-align: center; }
.hero h1 { font-size: clamp(28px, 4.5vw, 42px); line-height: 1.08; }
.tagline { color: var(--text-soft); font-size: 16px; margin: 12px auto 26px; max-width: 60ch; }
.search-wrap { position: relative; display: flex; align-items: center; }
.search-icon { position: absolute; left: 16px; color: var(--text-faint); pointer-events: none; }
#search {
  width: 100%; font-size: 16px; font-family: inherit; color: var(--text);
  padding: 15px 16px 15px 46px; border-radius: 13px;
  border: 1px solid var(--border-strong); background: var(--bg-elev);
  box-shadow: var(--shadow); transition: .16s ease;
}
#search:focus { outline: none; border-color: var(--accent); box-shadow: var(--shadow), 0 0 0 4px var(--accent-soft); }
.search-kbd {
  position: absolute; right: 14px; font-family: var(--mono); font-size: 12px;
  color: var(--text-faint); background: var(--bg-sunken); border: 1px solid var(--border);
  border-radius: 6px; padding: 2px 7px;
}
.stats { color: var(--text-faint); font-size: 13.5px; margin: 16px 0 0; }
.stats b { color: var(--text-soft); font-weight: 650; }

/* ---- Layout ---- */
.layout {
  max-width: var(--maxw); margin: 0 auto; padding: 8px 20px 60px;
  display: grid; grid-template-columns: 236px 1fr; gap: 30px; align-items: start;
}
.sidebar { position: sticky; top: 66px; }
.sidebar-scroll { max-height: calc(100vh - 86px); overflow-y: auto; padding-right: 4px; }
.filter-group { margin-bottom: 22px; }
.filter-group > h2, .filter-head h2 {
  font-size: 11px; text-transform: uppercase; letter-spacing: .09em;
  color: var(--text-faint); margin-bottom: 10px;
}
.filter-head { display: flex; align-items: baseline; justify-content: space-between; }
.cat-list { list-style: none; margin: 0; padding: 0; }
.cat-list li { margin: 1px 0; }
.cat-list button {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 8px;
  background: none; border: none; cursor: pointer; text-align: left;
  padding: 6px 9px; border-radius: 8px; color: var(--text-soft); font-size: 13.5px; transition: .12s;
}
.cat-list button:hover { background: var(--bg-sunken); color: var(--text); }
.cat-list button[aria-current="true"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.cat-list .n { font-size: 11.5px; color: var(--text-faint); font-variant-numeric: tabular-nums; }
.cat-list button[aria-current="true"] .n { color: var(--accent); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  border: 1px solid var(--border-strong); background: var(--bg-elev); color: var(--text-soft);
  padding: 4px 10px; border-radius: 999px; font-size: 12.5px; cursor: pointer; transition: .12s;
  font-family: var(--mono); letter-spacing: -.01em;
}
.chip:hover { border-color: var(--accent-line); color: var(--text); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ---- Toolbar ---- */
.toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-bottom: 16px; flex-wrap: wrap;
}
.toolbar-left { display: flex; align-items: center; gap: 12px; }
.toolbar-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.count { color: var(--text-faint); font-size: 13px; font-variant-numeric: tabular-nums; }
#filter-toggle { display: none; }
.sort { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--text-faint); }
.sort select {
  font: inherit; font-size: 12.5px; color: var(--text); background: var(--bg-elev);
  border: 1px solid var(--border-strong); border-radius: 8px; padding: 5px 8px; cursor: pointer;
}
.active-filters { display: flex; gap: 6px; flex-wrap: wrap; }
.active-filters .tag {
  display: inline-flex; align-items: center; gap: 5px; font-size: 12px;
  background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: 3px 6px 3px 10px;
}
.active-filters .tag button { background: none; border: none; color: inherit; cursor: pointer; font-size: 14px; line-height: 1; padding: 0 2px; }

/* ---- Grid & cards ---- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.cat-header {
  grid-column: 1 / -1; display: flex; align-items: baseline; gap: 10px;
  margin: 18px 2px 2px; padding-bottom: 6px; border-bottom: 1px solid var(--border);
}
.cat-header:first-child { margin-top: 0; }
.cat-header h3 { font-size: 15px; }
.cat-header .n { color: var(--text-faint); font-size: 12.5px; }

.card {
  position: relative; background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 16px 14px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 9px; transition: .16s ease;
}
.card:hover { border-color: var(--accent-line); transform: translateY(-2px); }
.card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.card-name { font-size: 15.5px; font-weight: 650; text-decoration: none; letter-spacing: -.01em; }
.card-name:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.card-name .ext { opacity: 0; margin-left: 3px; font-size: 11px; transition: .12s; }
.card:hover .card-name .ext { opacity: .5; }
.badge {
  flex: none; font-size: 10.5px; font-weight: 650; text-transform: uppercase; letter-spacing: .04em;
  padding: 2px 7px; border-radius: 6px; border: 1px solid transparent; white-space: nowrap;
}
.badge.official { color: #1f7a4d; background: #1f7a4d18; border-color: #1f7a4d33; }
.badge.reference { color: #7a5cff; background: #7a5cff18; border-color: #7a5cff33; }
.badge.archived { color: #9a8a20; background: #9a8a2018; border-color: #9a8a2033; }
:root[data-theme="dark"] .badge.official { color: #5cd39a; }
:root[data-theme="dark"] .badge.reference { color: #b3a3ff; }
:root[data-theme="dark"] .badge.archived { color: #e0cd63; }
.card-desc { color: var(--text-soft); font-size: 13.5px; margin: 0; flex: 1; }
.card-meta { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.tag-pill {
  font-family: var(--mono); font-size: 11.5px; color: var(--text-faint);
  background: var(--bg-sunken); border: 1px solid var(--border); border-radius: 6px;
  padding: 1px 7px; cursor: pointer; transition: .12s;
}
.tag-pill:hover { border-color: var(--accent-line); color: var(--text); }
.card-cat {
  font-size: 11.5px; color: var(--text-faint); cursor: pointer;
  margin-right: auto;
}
.card-cat:hover { color: var(--accent); }
.card-actions { display: flex; gap: 4px; }
.icon-act {
  background: none; border: 1px solid transparent; color: var(--text-faint);
  cursor: pointer; border-radius: 7px; padding: 4px; display: inline-flex; transition: .12s;
}
.icon-act:hover { color: var(--accent); background: var(--accent-soft); }

.empty { text-align: center; color: var(--text-soft); padding: 60px 20px; }

/* ---- Footer ---- */
.site-footer {
  max-width: var(--maxw); margin: 0 auto; padding: 30px 20px 50px; border-top: 1px solid var(--border);
  color: var(--text-soft); font-size: 13.5px; text-align: center;
}
.site-footer a { color: var(--accent); }
.site-footer .muted { color: var(--text-faint); font-size: 12.5px; margin-top: 6px; }

/* ---- Modal ---- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 60; background: rgba(10,8,5,.5);
  display: flex; align-items: center; justify-content: center; padding: 20px;
  backdrop-filter: blur(2px);
}
.modal {
  background: var(--bg-elev); border: 1px solid var(--border-strong); border-radius: 16px;
  box-shadow: 0 24px 60px -20px rgba(0,0,0,.5); max-width: 560px; width: 100%;
  max-height: 86vh; overflow-y: auto; padding: 22px;
}
.modal h2 { font-size: 18px; margin-bottom: 4px; }
.modal .sub { color: var(--text-soft); font-size: 13.5px; margin: 0 0 16px; }
.modal-close { position: absolute; }
.modal-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.modal-head .x { background: none; border: none; font-size: 22px; line-height: 1; color: var(--text-faint); cursor: pointer; }
.code {
  position: relative; background: var(--bg-sunken); border: 1px solid var(--border);
  border-radius: 10px; padding: 13px 14px; margin: 10px 0 4px;
}
.code pre { margin: 0; overflow-x: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.6; color: var(--text); white-space: pre; }
.code .copy {
  position: absolute; top: 8px; right: 8px; font-size: 11.5px; padding: 3px 9px;
  border: 1px solid var(--border-strong); background: var(--bg-elev); border-radius: 7px; cursor: pointer; color: var(--text-soft);
}
.code .copy:hover { color: var(--accent); border-color: var(--accent-line); }
.modal h3 { font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--text-faint); margin: 18px 0 2px; }
.modal p.note { font-size: 12.5px; color: var(--text-faint); }

.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%) translateY(10px);
  background: var(--text); color: var(--bg); padding: 9px 16px; border-radius: 10px; font-size: 13px;
  opacity: 0; transition: .2s; z-index: 80; pointer-events: none; box-shadow: var(--shadow);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---- Responsive ---- */
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; gap: 14px; }
  .sidebar {
    position: static; max-height: none; display: none;
    background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px;
  }
  .sidebar.open { display: block; }
  .sidebar-scroll { max-height: none; }
  #filter-toggle { display: inline-flex; }
  .hero { padding-top: 32px; }
}
@media (max-width: 520px) {
  .brand-text { display: none; }
  .topbar-actions .btn span.label { display: none; }
  .toolbar-right .sort span { display: none; }
}