/* Verstka Wiki — HUD/terminal design system (matches the app). */
:root {
  --ink: #0b0d11;
  --ink-soft: #14171e;
  --ink-2: #191d26;
  --line: #2c313b;
  --line-bright: #3d4450;
  --bone: #f0f2f5;
  --bone-dim: #a7abb3;
  --bone-faint: #6e7279;
  --accent: #adef5b;
  --accent-soft: #95cb54;
  --cyan: #6fe0ff;
  --amber: #f0d264;
  --red: #ff6568;
  --sans: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --wrap: min(1760px, 94vw);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--bone);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.hud-grid {
  background-image:
    linear-gradient(color-mix(in srgb, var(--line) 26%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--line) 26%, transparent) 1px, transparent 1px);
  background-size: 46px 46px;
}

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

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 clamp(1.1rem, 4vw, 2rem); }

/* Header */
header.top {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--ink) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
header.top .row { display: flex; align-items: center; gap: 1rem; height: 58px; }
.brand { display: flex; align-items: center; gap: 0.6rem; font-weight: 700; letter-spacing: -0.01em; }
.brand .glyph {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 7px; background: var(--ink-2);
  border: 1px solid var(--line); color: var(--accent); font-family: var(--mono);
  font-size: 13px; box-shadow: 0 0 12px -4px var(--accent);
}
.brand small { color: var(--bone-faint); font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; font-weight: 500; }
header.top nav { margin-left: auto; display: flex; gap: 0.4rem; }
header.top nav a {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--bone-faint); padding: 0.4rem 0.7rem; border: 1px solid transparent; border-radius: 4px;
}
header.top nav a:hover { color: var(--bone); border-color: var(--line); }

/* Hero */
.hero { padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(1.5rem, 4vw, 2.5rem); }
.hero .eyebrow { font-family: var(--mono); font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--bone-faint); margin-bottom: 0.9rem; }
.hero h1 { font-size: clamp(2rem, 5.5vw, 3.1rem); line-height: 1.05; letter-spacing: -0.02em; margin: 0 0 0.8rem; text-wrap: balance; }
.hero h1 .lime { color: var(--accent); }
.hero p { color: var(--bone-dim); max-width: 60ch; font-size: clamp(1rem, 2.2vw, 1.15rem); margin: 0; }

/* Article grid */
.grid { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin: 1.5rem 0 4rem; }
@media (min-width: 620px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 940px) { .grid { grid-template-columns: 1fr 1fr 1fr; } }
@media (min-width: 1400px) { .grid { grid-template-columns: repeat(4, 1fr); } }

.card { background: var(--ink-soft); display: flex; flex-direction: column; cursor: pointer; transition: background 0.15s; text-align: left; border: 0; color: inherit; font: inherit; padding: 0; }
.card:hover { background: var(--ink-2); }
.card .preview { position: relative; aspect-ratio: 16 / 9; background: #090b0e; overflow: hidden; border-bottom: 1px solid var(--line); }
.card .preview canvas { width: 100%; height: 100%; display: block; }
.card .meta { padding: 1rem 1.1rem 1.2rem; }
.card .cat { font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); }
.card h3 { margin: 0.35rem 0 0.3rem; font-size: 1.05rem; font-weight: 600; }
.card p { margin: 0; color: var(--bone-dim); font-size: 0.9rem; line-height: 1.5; }

/* Article view */
.article { padding: 1.5rem 0 5rem; display: block; }
.article .back { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--bone-faint); display: inline-flex; gap: 0.4rem; margin-bottom: 1.5rem; }
.article .hero-preview { aspect-ratio: 21 / 8; background: #090b0e; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; margin-bottom: 2rem; position: relative; }
.article .hero-preview canvas { width: 100%; height: 100%; display: block; }
.article .cat { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.6rem; }
.article h1 { font-size: clamp(1.8rem, 4.5vw, 2.6rem); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 0.6rem; text-wrap: balance; }
.article .lead { color: var(--bone-dim); font-size: 1.1rem; max-width: 64ch; margin: 0 0 2.2rem; }

.prose { max-width: 80ch; }
.prose h2 { font-size: 1.35rem; letter-spacing: -0.01em; margin: 2.4rem 0 0.8rem; display: flex; align-items: center; gap: 0.6rem; }
.prose h2::before { content: ''; display: inline-block; width: 3px; height: 1.1em; background: var(--accent); box-shadow: 0 0 8px var(--accent); border-radius: 2px; }
.prose p { color: var(--bone-dim); margin: 0 0 1rem; }
.prose strong { color: var(--bone); font-weight: 600; }
.prose ul, .prose ol { color: var(--bone-dim); padding-left: 1.3rem; margin: 0 0 1.2rem; }
.prose li { margin: 0.35rem 0; }
.prose code { font-family: var(--mono); font-size: 0.85em; background: var(--ink-2); border: 1px solid var(--line); border-radius: 4px; padding: 0.1em 0.4em; color: var(--bone); }
.prose pre { background: var(--ink-2); border: 1px solid var(--line); border-radius: 8px; padding: 1rem 1.1rem; overflow-x: auto; margin: 0 0 1.4rem; }
.prose pre code { background: none; border: 0; padding: 0; font-size: 0.85rem; color: var(--accent-soft); }
.prose .note { border: 1px solid color-mix(in srgb, var(--cyan) 35%, transparent); background: color-mix(in srgb, var(--cyan) 7%, transparent); border-radius: 8px; padding: 0.9rem 1.1rem; margin: 0 0 1.4rem; color: var(--bone-dim); font-size: 0.95rem; }
.prose .note strong { color: var(--cyan); }
.prose .warn { border-color: color-mix(in srgb, var(--amber) 40%, transparent); background: color-mix(in srgb, var(--amber) 8%, transparent); }
.prose .warn strong { color: var(--amber); }
.prose kbd { font-family: var(--mono); font-size: 0.8em; background: var(--ink-2); border: 1px solid var(--line-bright); border-bottom-width: 2px; border-radius: 5px; padding: 0.1em 0.45em; color: var(--bone); }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 0 0 1.4rem; }
.steps li { counter-increment: step; position: relative; padding-left: 2.4rem; margin: 0.7rem 0; color: var(--bone-dim); }
.steps li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 0; font-family: var(--mono); font-size: 11px; color: var(--accent); border: 1px solid var(--line); border-radius: 5px; width: 1.7rem; height: 1.5rem; display: flex; align-items: center; justify-content: center; }

.article nav.more { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 0.6rem; }
.article nav.more a { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--bone-faint); border: 1px solid var(--line); border-radius: 5px; padding: 0.5rem 0.8rem; }
.article nav.more a:hover { color: var(--bone); border-color: var(--line-bright); }

/* Landing hero with 3D object */
.hero-3d { display: grid; grid-template-columns: 1fr; gap: 2rem; align-items: center; }
@media (min-width: 860px) { .hero-3d { grid-template-columns: 1.05fr 0.95fr; } }
.hero-3d .copy { min-width: 0; }
.hero-3d .stage { position: relative; aspect-ratio: 1 / 1; max-height: 420px; }
.hero-3d .stage canvas { width: 100%; height: 100%; display: block; }
.hero-3d .stage::after {
  content: ''; position: absolute; inset: 12% 12% auto; height: 60%;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 12%, transparent), transparent 70%);
  filter: blur(24px); z-index: -1; pointer-events: none;
}
@media (max-width: 859px) { .hero-3d .stage { max-height: 300px; order: -1; } }

/* Landing CTA */
.cta-row { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.6rem; }
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.7rem 1.1rem; border-radius: 6px; border: 1px solid var(--line); color: var(--bone-dim);
  transition: all 0.15s;
}
.btn:hover { color: var(--bone); border-color: var(--line-bright); background: var(--ink-2); }
.btn.primary { background: var(--accent); color: var(--ink); border-color: var(--accent); font-weight: 600; }
.btn.primary:hover { background: var(--accent-soft); color: var(--ink); box-shadow: 0 0 16px -3px var(--accent); }
.section-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bone-faint); margin: 3rem 0 1rem; display: flex; align-items: center; gap: 0.6rem; }
.section-label::before { content: ''; width: 3px; height: 1em; background: var(--accent); box-shadow: 0 0 8px var(--accent); border-radius: 2px; }

/* Docs layout: sticky left TOC + content */
.docs { display: grid; grid-template-columns: 1fr; gap: 0; align-items: start; padding: 1.5rem 0 4rem; }
@media (min-width: 900px) { .docs { grid-template-columns: 264px 1fr; gap: 2.5rem; } }

.sidebar { position: relative; }
@media (min-width: 900px) { .sidebar { position: sticky; top: 74px; max-height: calc(100vh - 90px); overflow-y: auto; padding-right: 0.5rem; } }
.sidebar .search { position: relative; margin-bottom: 1.2rem; }
.sidebar .search input {
  width: 100%; background: var(--ink-2); border: 1px solid var(--line); border-radius: 7px;
  color: var(--bone); font-family: var(--mono); font-size: 13px; padding: 0.6rem 0.7rem 0.6rem 2.1rem;
}
.sidebar .search input::placeholder { color: var(--bone-faint); }
.sidebar .search input:focus { outline: none; border-color: var(--accent); }
.sidebar .search .icon { position: absolute; left: 0.7rem; top: 50%; transform: translateY(-50%); color: var(--bone-faint); font-family: var(--mono); font-size: 12px; }
.sidebar .search kbd { position: absolute; right: 0.6rem; top: 50%; transform: translateY(-50%); font-family: var(--mono); font-size: 10px; color: var(--bone-faint); border: 1px solid var(--line); border-radius: 4px; padding: 0.05rem 0.3rem; }

.toc .group { margin-bottom: 1.3rem; }
.toc .group > .gname { font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); margin: 0 0 0.5rem 0.1rem; }
.toc a { display: block; padding: 0.4rem 0.7rem; border-radius: 6px; color: var(--bone-dim); font-size: 0.92rem; border-left: 2px solid transparent; margin-bottom: 1px; }
.toc a:hover { background: var(--ink-2); color: var(--bone); }
.toc a.active { color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); border-left-color: var(--accent); }
.toc a mark { background: color-mix(in srgb, var(--accent) 28%, transparent); color: var(--bone); border-radius: 2px; }
.toc .empty { color: var(--bone-faint); font-size: 0.85rem; font-family: var(--mono); padding: 0.5rem 0.1rem; }

.docs-main { min-width: 0; }
.docs-welcome .hero-preview { aspect-ratio: 21 / 7; }

footer.foot { border-top: 1px solid var(--line); padding: 2rem 0 3rem; color: var(--bone-faint); font-family: var(--mono); font-size: 12px; }
footer.foot .row { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; align-items: center; }

.hidden { display: none !important; }

@media (prefers-reduced-motion: reduce) {
  .card .preview canvas, .article .hero-preview canvas { opacity: 0.9; }
}