/* Quintessential Design Fleet site — shell, map, trace, docs.
   Lint-clean by construction: spacing on the 4/8/12/16/24/32/48/64 scale,
   no pure-black shadows, no banned primary fonts, reduced motion honored,
   focus-visible styled. */

:root {
  --bg: oklch(15% 0.012 265);
  --grid-dot: oklch(22% 0.014 265);
  --panel: oklch(20% 0.014 265);
  --panel-edge: oklch(30% 0.016 265);
  --ink: oklch(93% 0.008 265);
  --muted: oklch(68% 0.014 265);
  --signal: oklch(80% 0.15 155);
  --signal-soft: oklch(80% 0.15 155 / 0.16);
  --human: oklch(82% 0.13 80);
  --danger: oklch(68% 0.19 25);
  --shadow: 0 8px 24px oklch(10% 0.01 265 / 0.45);
  --font-ui: "Space Grotesk", "Avenir Next", "Trebuchet MS", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", monospace;

  /* graph category hues */
  --c-skill: oklch(72% 0.15 295);
  --c-rule: oklch(72% 0.13 150);
  --c-rule-always: oklch(80% 0.13 80);
  --c-reference: oklch(70% 0.11 235);
  --c-content: oklch(74% 0.11 195);
  --c-lint-check: oklch(72% 0.13 350);
  --c-artifact: oklch(80% 0.12 100);
  --c-loop: oklch(75% 0.14 60);
  --c-cli: oklch(70% 0.02 265);
  --c-eval: oklch(70% 0.12 320);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  background-image: radial-gradient(var(--grid-dot) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--ink);
  font-family: var(--font-ui);
  min-height: 100vh;
}

a { color: var(--signal); }
code { font-family: var(--font-mono); font-size: 0.92em; }
.mono { font-family: var(--font-mono); }
.muted { color: var(--muted); }

button:focus-visible,
input:focus-visible,
a:focus-visible,
.node:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* ---- header + tabs ------------------------------------------------------ */

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 32px;
  border-bottom: 1px solid var(--panel-edge);
}

.site-brand { display: flex; align-items: center; gap: 12px; }
.site-brand strong { display: block; font-size: 16px; letter-spacing: 0.01em; }
.site-sub { color: var(--muted); font-size: 12px; }

.tabs { display: flex; gap: 4px; background: var(--panel); border: 1px solid var(--panel-edge); border-radius: 12px; padding: 4px; }

.tab-btn {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--muted);
  background: none;
  border: 0;
  border-radius: 8px;
  padding: 8px 16px;
  cursor: pointer;
  transition: color 150ms ease, background-color 150ms ease;
}
.tab-btn:hover { color: var(--ink); }
.tab-btn.active { color: var(--ink); background: oklch(28% 0.018 265); }

.panel { padding: 16px 32px 32px; }

/* ---- map ------------------------------------------------------------------ */

.map-wrap { display: flex; gap: 16px; align-items: stretch; }

.map-stage {
  position: relative;
  flex: 1;
  min-width: 0;
  height: 72vh;
  min-height: 480px;
  border: 1px solid var(--panel-edge);
  border-radius: 12px;
  background: oklch(17% 0.013 265 / 0.6);
  overflow: hidden;
}

#mapSvg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: grab; }
#mapSvg.panning { cursor: grabbing; }

.map-tools {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.map-tools input {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 8px;
  padding: 8px 12px;
  width: 224px;
}

.map-tools button {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}
.map-tools button:hover { color: var(--ink); border-color: var(--signal); }
.zoom-btn { width: 32px; }

.filter-wrap { position: relative; }

#mapFilter { display: inline-flex; align-items: center; gap: 8px; }
#mapFilter.filtering { color: var(--signal); border-color: var(--signal); }

/* author display:flex would override the hidden attribute's UA rule */
.filter-pop[hidden] { display: none; }

.filter-pop {
  position: absolute;
  top: 44px;
  left: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 224px;
  padding: 8px;
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.filter-pop button {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: left;
  color: var(--ink);
  background: none;
  border: 0;
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}
.filter-pop button:hover { background: oklch(26% 0.016 265); }
.filter-pop button .dot { width: 8px; height: 8px; border-radius: 4px; flex: none; }
.filter-pop .filter-name { flex: 1; }
.filter-pop .filter-count { color: var(--muted); }
.filter-pop button.off { opacity: 0.4; }
.filter-pop button.off .filter-name { text-decoration: line-through; }
.filter-pop .filter-all {
  justify-content: center;
  color: var(--muted);
  border-top: 1px solid var(--panel-edge);
  border-radius: 0 0 8px 8px;
}

.map-hint {
  position: absolute;
  right: 12px;
  bottom: 12px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}

.details {
  width: 280px;
  flex: none;
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 12px;
  padding: 16px;
  overflow: auto;
  max-height: 72vh;
}

.kicker {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.details h3 { margin: 0 0 4px; font-size: 16px; }
.details p { margin: 0 0 12px; font-size: 13px; line-height: 1.55; color: var(--muted); }
.details .mono { font-size: 11px; color: var(--signal); }
#mdLinks { display: flex; flex-direction: column; gap: 4px; }
#mdLinks button {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  background: none;
  border: 1px solid var(--panel-edge);
  border-radius: 8px;
  padding: 4px 8px;
  cursor: pointer;
}
#mdLinks button:hover { color: var(--ink); border-color: var(--signal); }

/* graph elements */
.glink { stroke: oklch(36% 0.018 265); stroke-width: 1; }
.glink.lit { stroke: var(--signal); stroke-width: 1.5; }
.glink.dim { stroke: oklch(26% 0.014 265); }
.gnode { cursor: pointer; stroke: oklch(14% 0.012 265); stroke-width: 1.5; }
.gnode.dim { opacity: 0.25; }
.gnode.hit { stroke: var(--signal); stroke-width: 2.5; }
.glabel {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--ink);
  paint-order: stroke;
  stroke: oklch(15% 0.012 265 / 0.85);
  stroke-width: 3;
  pointer-events: none;
}
.glabel.dim { opacity: 0.25; }

/* ---- trace ----------------------------------------------------------------- */

.trace-wrap { max-width: 760px; margin: 0 auto; }
.trace-wrap h2 { margin: 16px 0 8px; }

#traceForm { display: flex; gap: 8px; margin: 16px 0 24px; }
#traceForm input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 8px;
  padding: 12px 16px;
}
#traceForm button {
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--bg);
  background: var(--signal);
  border: 0;
  border-radius: 8px;
  padding: 12px 24px;
  cursor: pointer;
}

.trace-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 13px;
}
.trace-row .name { width: 160px; font-family: var(--font-mono); }
.trace-row .bar-track { flex: 1; height: 8px; border-radius: 4px; background: oklch(24% 0.014 265); overflow: hidden; }
.trace-row .bar { height: 100%; border-radius: 4px; background: var(--c-skill); transition: width 250ms ease; }
.trace-row .score { width: 48px; text-align: right; font-family: var(--font-mono); color: var(--muted); }
.trace-row.winner .bar { background: var(--signal); }

.trace-verdict {
  margin-top: 24px;
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 12px;
  padding: 16px;
}
.trace-verdict h3 { margin: 0 0 8px; }
.trace-verdict h3 .mono { color: var(--signal); }
.trace-verdict p { color: var(--muted); font-size: 13px; line-height: 1.55; }
.trace-verdict .fallback { color: var(--human); }

/* ---- docs ------------------------------------------------------------------- */

.docs { max-width: 720px; margin: 0 auto; line-height: 1.6; }
.docs h2 { margin: 16px 0 8px; }
.docs h3 { margin: 32px 0 8px; }
.docs p { color: var(--muted); font-size: 14px; }
.docs pre {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 12px;
  padding: 16px;
  font-size: 13px;
  overflow: auto;
}
.docs table { width: 100%; border-collapse: collapse; font-size: 13px; }
.docs th { text-align: left; color: var(--muted); font-weight: 500; }
.docs th, .docs td { padding: 8px 12px; border-bottom: 1px solid var(--panel-edge); }

/* ---- patchboard tab toolbar --------------------------------------------------- */

.pb-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.pb-zoom { display: flex; align-items: center; gap: 8px; }
.pb-zoom button {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}
.pb-zoom button:hover { color: var(--ink); border-color: var(--signal); }
#pbZoomPct { font-size: 12px; color: var(--muted); width: 48px; text-align: center; }

/* ---- responsive ----------------------------------------------------------------- */

@media (max-width: 900px) {
  .map-wrap { flex-direction: column; }
  .details { width: 100%; max-height: none; }
  .panel { padding: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 1ms !important; animation: none !important; }
}