/* Decision Ladder instrument — page rules only.
   Colour, type, radius and glass come from the brand kit (theme.css + gk-kit.css);
   nothing here restates a kit token except the two the kit does not carry:
   a warn tone and a quiet "climbed" tone, both mixed from kit tokens. */

.gk {
  --warn: color-mix(in oklab, var(--gk-alert-red) 34%, var(--gk-accent));
  --ascend: color-mix(in oklab, var(--gk-accent) 55%, var(--gk-muted));
}

body {
  margin: 0;
  background: var(--gk-bg);
  color: var(--gk-ink);
  font: 400 1rem/1.6 var(--gk-font);
}

.inst {
  max-width: 68rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
  display: grid;
  gap: 2rem;
}

.inst-kicker {
  margin: 0 0 .3rem;
  font: 600 .78rem/1.4 var(--gk-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--gk-muted);
}

h1 { margin: 0 0 .6rem; font: 600 2rem/1.15 var(--gk-font-display); }
h2 { margin: 0 0 .9rem; font: 600 1.15rem/1.3 var(--gk-font-display); }
h3 { margin: 1.8rem 0 .6rem; font: 600 .95rem/1.3 var(--gk-font-display); }

.inst-lead { margin: 0 0 .5rem; max-width: 46rem; color: var(--gk-ink-2); }
.inst-src { margin: 0; font-size: .85rem; color: var(--gk-muted); }
a { color: var(--gk-accent); text-decoration-color: color-mix(in oklab, var(--gk-accent) 45%, transparent); }

.bench, .out, .promo {
  border: 1px solid var(--gk-line);
  border-radius: var(--gk-r-md, 10px);
  background: var(--gk-glass, var(--gk-bg-light));
  padding: 1.3rem 1.3rem 1.5rem;
}

.facts { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.fact-label { margin: 0 0 .4rem; font: 600 .82rem/1.4 var(--gk-font); color: var(--gk-ink-2); }
.fact-help {
  display: inline-grid; place-items: center;
  width: 1.1rem; height: 1.1rem;
  border: 1px solid var(--gk-line-strong); border-radius: 50%;
  font-size: .7rem; color: var(--gk-muted); cursor: help;
}
.fact-help:focus-visible { outline: 2px solid var(--gk-focus, var(--gk-accent)); outline-offset: 2px; }

.gk-seg { display: flex; flex-wrap: wrap; gap: .35rem; }
.gk-seg button {
  min-height: 2.4rem;
  padding: .35rem .7rem;
  border: 1px solid var(--gk-line);
  border-radius: var(--gk-r-sm, 6px);
  background: transparent;
  color: var(--gk-ink-2);
  font: 500 .82rem/1.2 var(--gk-font);
  cursor: pointer;
}
.gk-seg button:hover { border-color: var(--gk-line-strong); color: var(--gk-ink); }
.gk-seg button[aria-checked="true"] {
  border-color: var(--gk-accent);
  color: var(--gk-ink);
  box-shadow: inset 0 -2px 0 0 var(--gk-accent);
}
.gk-seg button:focus-visible { outline: 2px solid var(--gk-focus, var(--gk-accent)); outline-offset: 2px; }

.bench-foot { display: flex; align-items: center; gap: 1rem; margin: 1.2rem 0 0; }
.hint { font: 500 .75rem/1.4 var(--gk-mono); color: var(--gk-muted); }

.rungs { list-style: none; margin: 0 0 1.4rem; padding: 0; display: grid; gap: .25rem; }
.rung {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: .8rem;
  padding: .45rem .7rem;
  border-left: 2px solid transparent;
  border-radius: var(--gk-r-sm, 6px);
  color: var(--gk-muted);
}
.rung-n { font: 600 .8rem/1.4 var(--gk-mono); }
.rung-engine { font-size: .9rem; }
.rung-sys { font: 500 .72rem/1.4 var(--gk-mono); color: var(--gk-muted); }
.rung.is-climbed { border-left-color: var(--ascend); color: var(--gk-ink-2); }
.rung.is-chosen {
  border-left-color: var(--gk-accent);
  background: color-mix(in oklab, var(--gk-accent) 10%, transparent);
  color: var(--gk-ink);
}
.rung.is-chosen .rung-n { color: var(--gk-accent); }

.verdict { display: flex; flex-wrap: wrap; gap: .6rem; align-items: stretch; margin: 0 0 .4rem; }
.badge {
  display: grid; gap: .1rem;
  padding: .5rem .8rem;
  border: 1px solid var(--gk-line);
  border-radius: var(--gk-r-sm, 6px);
  min-width: 9rem;
}
.badge-k { font: 600 .68rem/1.3 var(--gk-mono); text-transform: uppercase; letter-spacing: .05em; color: var(--gk-muted); }
.badge-v { font: 600 .92rem/1.3 var(--gk-font); }
.state-resolved .badge-v { color: var(--gk-accent); }
.state-ambiguous .badge-v { color: var(--warn); }
.state-unresolved .badge-v, .state-rejected .badge-v { color: var(--gk-alert-red); }
.auth-owner { border-color: color-mix(in oklab, var(--gk-alert-red) 45%, var(--gk-line)); }

.note { flex-basis: 100%; margin: 0; font-size: .88rem; color: var(--gk-ink-2); }
.note.is-violation { color: var(--gk-alert-red); }

.rules { width: 100%; border-collapse: collapse; font-size: .84rem; }
.rules th, .rules td { text-align: left; padding: .4rem .55rem; border-bottom: 1px solid var(--gk-line-soft); vertical-align: top; }
.rules thead th { font: 600 .7rem/1.4 var(--gk-mono); text-transform: uppercase; letter-spacing: .05em; color: var(--gk-muted); }
.rules tbody th { font: 600 .78rem/1.4 var(--gk-mono); color: var(--gk-ink-2); white-space: nowrap; }
.rules tr.fired td:last-child { color: var(--gk-accent); font-weight: 600; }
.rules td:last-child { font: 500 .74rem/1.4 var(--gk-mono); color: var(--gk-muted); }

.log {
  margin: 0;
  padding: .8rem .9rem;
  border: 1px solid var(--gk-line);
  border-radius: var(--gk-r-sm, 6px);
  background: var(--gk-bg);
  font: 500 .78rem/1.6 var(--gk-mono);
  color: var(--gk-ink-2);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.promo p { margin: 0 0 .7rem; max-width: 46rem; color: var(--gk-ink-2); font-size: .9rem; }
.replay-rule { font-size: .84rem; color: var(--gk-muted) !important; }
.replay-line { font: 500 .86rem/1.5 var(--gk-mono); color: var(--gk-ink); }
.replay-verdict { font-weight: 600; }
.replay-verdict.is-broken { color: var(--gk-alert-red); }
.replay-verdict.is-sound { color: var(--gk-accent); }

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