/* PartsMatch — Nakama technical aesthetic. Black / white / Signal Red. */
:root {
  --signal-red: #c8102e;
  --black: #0b0b0c;
  --ink: #f4f4f5;
  --surface: #141417;
  --surface-2: #1c1c21;
  --line: #2a2a31;
  --muted: #8a8a93;

  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --text-display: clamp(2.2rem, 1.4rem + 3.4vw, 4.2rem);
  --space: clamp(1.5rem, 1rem + 2vw, 3.5rem);
  --radius: 4px;
  --dur: 220ms;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--black);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.5;
  min-height: 100vh;
  padding: var(--space);
  background-image:
    linear-gradient(transparent 0 calc(100% - 1px), var(--line) 100%),
    linear-gradient(90deg, transparent 0 calc(100% - 1px), var(--line) 100%);
  background-size: 64px 64px;
}

.shell { max-width: 1080px; margin-inline: auto; }

/* Masthead — editorial, left-aligned, not a centered hero. */
.masthead {
  display: flex; align-items: baseline; gap: 1ch;
  border-bottom: 2px solid var(--signal-red);
  padding-bottom: 0.6rem; margin-bottom: var(--space);
}
.masthead h1 {
  font-family: var(--mono); font-weight: 700; letter-spacing: -0.04em;
  font-size: var(--text-display); line-height: 0.9;
}
.masthead h1 .mark { color: var(--signal-red); }
.masthead .tag {
  font-family: var(--mono); font-size: 0.72rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.18em; margin-left: auto;
}

.lede { color: var(--muted); max-width: 60ch; margin-bottom: var(--space); font-size: 0.98rem; }
.lede strong { color: var(--ink); font-weight: 600; }

/* Input row */
.console { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: stretch; }
.console label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
#vin {
  flex: 1 1 320px; min-width: 0;
  font-family: var(--mono); font-size: 1.05rem; letter-spacing: 0.12em; text-transform: uppercase;
  background: var(--surface); color: var(--ink);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.85rem 1rem; transition: border-color var(--dur) var(--ease);
}
#vin:focus { outline: none; border-color: var(--signal-red); }
#vin::placeholder { color: var(--muted); letter-spacing: 0.12em; }

button.resolve {
  font-family: var(--mono); font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em;
  background: var(--signal-red); color: #fff; border: 0; border-radius: var(--radius);
  padding: 0.85rem 1.6rem; cursor: pointer;
  transition: transform var(--dur) var(--ease), filter var(--dur) var(--ease);
}
button.resolve:hover { filter: brightness(1.12); }
button.resolve:active { transform: translateY(1px); }
button.resolve:disabled { opacity: 0.5; cursor: progress; }

.examples { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.8rem; }
.chip {
  font-family: var(--mono); font-size: 0.74rem; color: var(--muted);
  background: transparent; border: 1px solid var(--line); border-radius: 999px;
  padding: 0.3rem 0.7rem; cursor: pointer; transition: color var(--dur), border-color var(--dur);
}
.chip:hover { color: var(--ink); border-color: var(--signal-red); }

/* Results */
#out { margin-top: var(--space); }
.source {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.4rem 1.2rem;
  padding: 1rem 1.2rem; background: var(--surface); border: 1px solid var(--line);
  border-left: 3px solid var(--signal-red); border-radius: var(--radius); margin-bottom: 1.2rem;
}
.source .vin { font-family: var(--mono); color: var(--muted); letter-spacing: 0.1em; }
.source .veh { font-size: 1.3rem; font-weight: 700; }
.source .plat { font-family: var(--mono); font-size: 0.8rem; color: var(--signal-red); text-transform: uppercase; letter-spacing: 0.12em; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1rem; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem; transition: border-color var(--dur) var(--ease); }
.card:hover { border-color: var(--muted); }
.card.link { border-style: dashed; }
.card .head { display: flex; align-items: baseline; justify-content: space-between; gap: 1ch; margin-bottom: 0.2rem; }
.card .name { font-weight: 700; font-size: 1.05rem; }
.card .chassis { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); }
.card .rel { font-family: var(--mono); font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.card .rel.componentry-link { color: var(--signal-red); }
.card .headline { font-family: var(--mono); font-size: 2rem; font-weight: 700; letter-spacing: -0.03em; margin: 0.4rem 0 0.2rem; }
.card .shared { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); margin-bottom: 0.8rem; }
.card .note { font-size: 0.78rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 0.6rem; margin-top: 0.6rem; }

.cat { margin-top: 0.55rem; }
.cat .row { display: flex; justify-content: space-between; font-size: 0.8rem; }
.cat .row .pct { font-family: var(--mono); }
.bar { height: 5px; background: var(--surface-2); border-radius: 999px; overflow: hidden; margin-top: 0.2rem; }
.bar > span { display: block; height: 100%; background: var(--signal-red); transform-origin: left; }
.cat .caveat { font-size: 0.72rem; color: var(--muted); margin-top: 0.15rem; }

/* Refusal & status */
.refusal {
  padding: 1.4rem 1.2rem; background: var(--surface); border: 1px solid var(--line);
  border-left: 3px solid var(--muted); border-radius: var(--radius);
}
.refusal .reason { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.14em; color: var(--signal-red); font-size: 0.8rem; }
.refusal .detail { margin-top: 0.4rem; font-size: 1.05rem; }
.status { font-family: var(--mono); color: var(--muted); font-size: 0.85rem; }

details.trace { margin-top: 1.4rem; }
details.trace summary { font-family: var(--mono); font-size: 0.78rem; color: var(--muted); cursor: pointer; }
details.trace pre { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; overflow: auto; margin-top: 0.6rem; }

footer { margin-top: var(--space); color: var(--muted); font-family: var(--mono); font-size: 0.72rem; }

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