/* ============================================================
   Occupational Biomechanics Dataset Catalog
   Palette is drawn from the lab: near-white measurement paper,
   deep slate ink, a teal "motion-trace" accent, an amber caution
   tone for pending data. Metrics are set in monospace so the
   catalog reads like an instrument panel, not a brochure.
   ============================================================ */

:root {
  --paper:        #F5F6F8;
  --surface:      #FFFFFF;
  --ink:          #15202B;
  --ink-muted:    #58666F;
  --line:         #E4E8EC;
  --line-strong:  #D3D9DE;

  --accent:       #0F766E;   /* teal petrol — open / available, trajectory trace */
  --accent-weak:  #E4F0EE;
  --amber:        #B45309;   /* coming soon */
  --amber-weak:   #FBEDDF;
  --slate:        #64748B;   /* restricted */
  --slate-weak:   #EDF0F3;

  --font-sans: "IBM Plex Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --maxw: 1140px;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(21, 32, 43, .04), 0 6px 20px rgba(21, 32, 43, .05);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- eyebrow / mono labels ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* ---------- header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky; top: 0; z-index: 20;
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand .mark {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  color: var(--surface);
  background: var(--ink);
  padding: 3px 7px;
  border-radius: 5px;
  letter-spacing: .02em;
}
.brand .name { font-weight: 600; letter-spacing: -.01em; }
.nav { display: flex; gap: 22px; }
.nav a { color: var(--ink-muted); font-size: 14px; }
.nav a:hover { color: var(--ink); text-decoration: none; }

/* ---------- hero ---------- */
.hero {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero .wrap {
  padding-top: 40px; padding-bottom: 30px;
}
.hero h1 {
  font-size: clamp(27px, 3.6vw, 40px);
  line-height: 1.08;
  letter-spacing: -.025em;
  font-weight: 600;
  max-width: 22ch;
  margin: 12px 0 14px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.lede {
  font-size: 16px;
  color: var(--ink-muted);
  max-width: 62ch;
  margin: 0 0 22px;
}

/* live stat readout — a slim instrument-panel bar under the lede */
.readout {
  display: flex; flex-wrap: wrap; align-items: baseline;
  gap: 10px 26px;
}
.readout .cell {
  display: flex; align-items: baseline; gap: 8px;
}
.readout .num {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 600;
  line-height: 1;
  color: var(--ink);
}
.readout .num.accent { color: var(--accent); }
.readout .num.amber  { color: var(--amber); }
.readout .lbl {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-muted);
}

/* ---------- controls ---------- */
.controls {
  padding-top: 26px; padding-bottom: 6px;
}
.searchbar {
  display: flex; align-items: center; gap: 10px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 18px;
}
.searchbar input {
  border: 0; outline: 0; width: 100%; font-size: 15px;
  font-family: var(--font-sans); color: var(--ink); background: transparent;
}
.searchbar .icon { color: var(--ink-muted); flex: none; }

.filter-row { margin-bottom: 12px; }
.filter-row .group-label {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-muted);
  margin-right: 12px; display: inline-block; min-width: 92px;
}
.chips { display: inline-flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 5px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-muted);
  cursor: pointer;
  user-select: none;
  transition: background .12s, color .12s, border-color .12s;
}
.chip:hover { border-color: var(--ink-muted); color: var(--ink); }
.chip[aria-pressed="true"] {
  background: var(--ink); color: var(--surface); border-color: var(--ink);
}
.chip.status-open[aria-pressed="true"]        { background: var(--accent); border-color: var(--accent); }
.chip.status-coming_soon[aria-pressed="true"] { background: var(--amber);  border-color: var(--amber); }
.chip.status-restricted[aria-pressed="true"]  { background: var(--slate);  border-color: var(--slate); }

.result-bar {
  display: flex; align-items: center; justify-content: space-between;
  margin: 18px 0 20px; padding-top: 16px; border-top: 1px solid var(--line);
}
.result-bar .count { font-family: var(--font-mono); font-size: 13px; color: var(--ink-muted); }
.result-bar .count b { color: var(--ink); }
.linkbtn {
  background: none; border: 0; cursor: pointer;
  font-family: var(--font-mono); font-size: 12px; color: var(--accent);
  padding: 0;
}
.linkbtn:hover { text-decoration: underline; }

/* ---------- card grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
  padding-bottom: 64px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow);
  transition: transform .14s ease, border-color .14s ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--line-strong); }
.card.is-coming { background: linear-gradient(180deg, #fff 0%, #fffdfa 100%); }

.card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.card .cid { font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted); letter-spacing: .02em; }
.card h3 { font-size: 17px; line-height: 1.25; letter-spacing: -.01em; margin: 6px 0 4px; }
.card .src { font-size: 13px; color: var(--ink-muted); margin-bottom: 12px; }
.card .desc { font-size: 13.5px; color: #3d4852; margin: 0 0 14px; }

.badge {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: .08em; text-transform: uppercase;
  padding: 4px 9px; border-radius: 999px; white-space: nowrap; flex: none;
  font-weight: 500;
}
.badge.open        { background: var(--accent-weak); color: var(--accent); }
.badge.coming_soon { background: var(--amber-weak);  color: var(--amber); }
.badge.restricted  { background: var(--slate-weak);  color: var(--slate); }
.badge.sample {
  background: transparent; color: var(--ink-muted);
  border: 1px dashed var(--line-strong);
}

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.tag {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--ink-muted); background: var(--paper);
  border: 1px solid var(--line); border-radius: 5px; padding: 2px 7px;
}
.tag.mod { color: var(--accent); border-color: var(--accent-weak); background: var(--accent-weak); }

/* metric readout inside card */
.metrics {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px;
  border-top: 1px solid var(--line); padding-top: 12px; margin-top: auto;
}
.metric { display: flex; flex-direction: column; }
.metric .k { font-family: var(--font-mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-muted); }
.metric .v { font-family: var(--font-mono); font-size: 13px; color: var(--ink); margin-top: 2px; }

.card-foot {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line);
}
.card-foot .lic { font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted); }
.card-foot a.out {
  font-family: var(--font-mono); font-size: 12px; font-weight: 500;
  color: var(--accent);
}
.card-foot .pending { font-family: var(--font-mono); font-size: 12px; color: var(--amber); }

/* empty state */
.empty {
  grid-column: 1 / -1;
  text-align: center; padding: 60px 20px; color: var(--ink-muted);
  border: 1px dashed var(--line-strong); border-radius: var(--radius);
}
.empty b { color: var(--ink); display: block; margin-bottom: 6px; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  font-size: 13px; color: var(--ink-muted);
}
.site-footer .wrap { padding: 32px 24px 48px; display: grid; gap: 10px; }
.site-footer .gov { max-width: 70ch; }
.site-footer code { font-family: var(--font-mono); font-size: 12px; }

/* ---------- responsive ---------- */
@media (max-width: 820px) {
  .hero .wrap { padding-top: 30px; padding-bottom: 26px; }
  .nav { display: none; }
  .filter-row .group-label { display: block; margin-bottom: 6px; min-width: 0; }
}

/* accessibility: focus + reduced motion */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}