/* Inkress ADRs — design system
   Editorial, light-first, tinted-neutral. OKLCH throughout. One cool accent. */

:root {
  /* neutrals, tinted toward a cool slate (hue ~255) */
  --paper:      oklch(0.985 0.004 255);
  --paper-2:    oklch(0.965 0.006 255);
  --paper-3:    oklch(0.935 0.008 255);
  --line:       oklch(0.90 0.010 255);
  --line-soft:  oklch(0.93 0.008 255);
  --ink:        oklch(0.26 0.020 260);
  --ink-2:      oklch(0.44 0.018 260);
  --ink-3:      oklch(0.58 0.016 260);

  /* accent — a cool, precise blue, used sparingly (<=10%) */
  --accent:     oklch(0.55 0.145 245);
  --accent-2:   oklch(0.48 0.15 245);
  --accent-wash:oklch(0.95 0.03 245);

  /* semantic status */
  --ok:         oklch(0.58 0.11 158);
  --ok-wash:    oklch(0.95 0.035 158);
  --proposed:   oklch(0.56 0.15 285);
  --proposed-wash: oklch(0.95 0.04 285);
  --warn:       oklch(0.62 0.13 55);

  /* diagram palette (kept in sync with lib/diagrams) */
  --d-blue:   oklch(0.55 0.145 245);
  --d-teal:   oklch(0.60 0.11 200);
  --d-green:  oklch(0.60 0.11 158);
  --d-violet: oklch(0.56 0.15 285);
  --d-amber:  oklch(0.66 0.12 70);
  --d-rose:   oklch(0.60 0.15 20);
  --d-fill:   oklch(0.975 0.006 255);
  --d-fill-2: oklch(0.945 0.010 255);

  --radius: 10px;
  --radius-sm: 7px;
  --maxw: 1160px;
  --read: 68ch;

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

  --shadow-1: 0 1px 2px oklch(0.26 0.02 260 / 0.05), 0 2px 8px oklch(0.26 0.02 260 / 0.05);
  --shadow-2: 0 4px 24px oklch(0.26 0.02 260 / 0.10);
}

:root:not([data-theme="light"]) {
  @media (prefers-color-scheme: dark) {
    --paper:      oklch(0.19 0.012 260);
    --paper-2:    oklch(0.225 0.014 260);
    --paper-3:    oklch(0.265 0.016 260);
    --line:       oklch(0.32 0.018 260);
    --line-soft:  oklch(0.28 0.016 260);
    --ink:        oklch(0.94 0.008 255);
    --ink-2:      oklch(0.78 0.012 255);
    --ink-3:      oklch(0.64 0.014 255);
    --accent:     oklch(0.72 0.14 240);
    --accent-2:   oklch(0.80 0.12 240);
    --accent-wash:oklch(0.30 0.05 245);
    --ok:         oklch(0.72 0.12 158);
    --ok-wash:    oklch(0.30 0.05 158);
    --proposed:   oklch(0.74 0.14 285);
    --proposed-wash: oklch(0.30 0.05 285);
    --d-fill:   oklch(0.235 0.015 260);
    --d-fill-2: oklch(0.285 0.017 260);
    --shadow-1: 0 1px 2px oklch(0 0 0 / 0.3), 0 2px 10px oklch(0 0 0 / 0.28);
    --shadow-2: 0 6px 30px oklch(0 0 0 / 0.42);
  }
}
:root[data-theme="dark"] {
  --paper:      oklch(0.19 0.012 260);
  --paper-2:    oklch(0.225 0.014 260);
  --paper-3:    oklch(0.265 0.016 260);
  --line:       oklch(0.32 0.018 260);
  --line-soft:  oklch(0.28 0.016 260);
  --ink:        oklch(0.94 0.008 255);
  --ink-2:      oklch(0.78 0.012 255);
  --ink-3:      oklch(0.64 0.014 255);
  --accent:     oklch(0.72 0.14 240);
  --accent-2:   oklch(0.80 0.12 240);
  --accent-wash:oklch(0.30 0.05 245);
  --ok:         oklch(0.72 0.12 158);
  --ok-wash:    oklch(0.30 0.05 158);
  --proposed:   oklch(0.74 0.14 285);
  --proposed-wash: oklch(0.30 0.05 285);
  --d-fill:   oklch(0.235 0.015 260);
  --d-fill-2: oklch(0.285 0.017 260);
  --shadow-1: 0 1px 2px oklch(0 0 0 / 0.3), 0 2px 10px oklch(0 0 0 / 0.28);
  --shadow-2: 0 6px 30px oklch(0 0 0 / 0.42);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv05" 1, "ss01" 1;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); text-decoration: underline; text-underline-offset: 2px; }

::selection { background: var(--accent-wash); color: var(--ink); }

/* ---------- layout primitives ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklch, var(--paper) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar__in { display: flex; align-items: center; gap: 18px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 640; letter-spacing: -0.01em; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand .mark { width: 26px; height: 26px; }
.brand small { font-family: var(--mono); font-size: 11px; font-weight: 500; color: var(--ink-3); letter-spacing: 0.02em; text-transform: uppercase; }
.topbar nav { margin-left: auto; display: flex; align-items: center; gap: 22px; }
.topbar nav a { color: var(--ink-2); font-size: 14.5px; font-weight: 500; }
.topbar nav a:hover { color: var(--ink); text-decoration: none; }
.iconbtn { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: var(--paper-2); color: var(--ink-2); cursor: pointer; }
.iconbtn:hover { color: var(--ink); border-color: var(--ink-3); }

/* ---------- hero ---------- */
.hero { padding: 88px 0 40px; position: relative; overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.eyebrow { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.hero h1 { font-family: var(--serif); font-weight: 500; font-size: clamp(38px, 5vw, 62px); line-height: 1.03; letter-spacing: -0.02em; margin: 16px 0 0; color: var(--ink); }
.hero h1 em { font-style: italic; color: var(--accent); }
.hero p.lede { font-size: 19px; line-height: 1.6; color: var(--ink-2); max-width: 52ch; margin: 22px 0 0; }
.hero__actions { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.hero__stats { display: flex; gap: 34px; margin-top: 40px; flex-wrap: wrap; }
.stat .n { font-family: var(--serif); font-size: 34px; font-weight: 500; color: var(--ink); line-height: 1; }
.stat .l { font-size: 13px; color: var(--ink-3); margin-top: 6px; }

.btn { display: inline-flex; align-items: center; gap: 8px; height: 44px; padding: 0 20px; border-radius: var(--radius); font-weight: 560; font-size: 15px; border: 1px solid transparent; cursor: pointer; transition: transform .18s cubic-bezier(.22,1,.36,1), background .18s, border-color .18s; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--accent); color: oklch(0.99 0.01 245); }
.btn--primary:hover { background: var(--accent-2); color: oklch(0.99 0.01 245); }
.btn--ghost { background: var(--paper-2); color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--ink-3); }

/* ---------- section ---------- */
.section { padding: 64px 0; }
.section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 30px; }
.section__head h2 { font-family: var(--serif); font-weight: 500; font-size: 30px; letter-spacing: -0.015em; margin: 0; color: var(--ink); }
.section__head p { margin: 8px 0 0; color: var(--ink-2); max-width: 60ch; }
.kicker { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-3); }

/* ---------- area rows (index, not a card grid) ---------- */
.areas { border-top: 1px solid var(--line); }
.area { display: grid; grid-template-columns: 260px 1fr; gap: 32px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.area__meta h3 { font-size: 18px; font-weight: 620; margin: 0; letter-spacing: -0.01em; }
.area__meta .count { font-family: var(--mono); font-size: 12px; color: var(--ink-3); margin-top: 6px; display: block; }
.area__list { display: flex; flex-direction: column; }
.arow { display: grid; grid-template-columns: 46px 1fr auto; gap: 14px; align-items: baseline; padding: 9px 10px; margin: 0 -10px; border-radius: var(--radius-sm); }
.arow:hover { background: var(--paper-2); text-decoration: none; }
.arow .num { font-family: var(--mono); font-size: 13px; color: var(--ink-3); }
.arow .t { color: var(--ink); font-weight: 480; line-height: 1.4; }
.arow:hover .t { color: var(--accent); }
.arow .st { justify-self: end; }

/* ---------- status chips ---------- */
.chip { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: 0.02em; padding: 3px 9px; border-radius: 100px; border: 1px solid; text-transform: uppercase; }
.chip::before { content: ""; width: 6px; height: 6px; border-radius: 100px; background: currentColor; }
.chip--accepted { color: var(--ok); background: var(--ok-wash); border-color: color-mix(in oklch, var(--ok) 35%, transparent); }
.chip--proposed { color: var(--proposed); background: var(--proposed-wash); border-color: color-mix(in oklch, var(--proposed) 35%, transparent); }

/* ---------- ADR page ---------- */
.doc { display: grid; grid-template-columns: 1fr 264px; gap: 56px; padding: 44px 0 96px; align-items: start; }
.doc__main { min-width: 0; }
.crumb { font-family: var(--mono); font-size: 12.5px; color: var(--ink-3); margin-bottom: 18px; }
.crumb a { color: var(--ink-3); }
.doc__num { font-family: var(--mono); font-size: 14px; color: var(--accent); font-weight: 600; letter-spacing: 0.04em; }
.doc h1 { font-family: var(--serif); font-weight: 500; font-size: clamp(29px, 3.4vw, 40px); line-height: 1.1; letter-spacing: -0.02em; margin: 10px 0 20px; color: var(--ink); }

.prose { max-width: var(--read); }
.prose > * + * { margin-top: 1.05em; }
.prose h2 { font-family: var(--sans); font-weight: 640; font-size: 15px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent-2); margin-top: 2.2em; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.prose h3 { font-family: var(--serif); font-weight: 560; font-size: 21px; letter-spacing: -0.01em; margin-top: 1.6em; }
.prose p, .prose li { color: var(--ink); }
.prose strong { font-weight: 640; color: var(--ink); }
.prose em { font-style: italic; }
.prose a { border-bottom: 1px solid color-mix(in oklch, var(--accent) 35%, transparent); }
.prose a:hover { text-decoration: none; border-bottom-color: var(--accent); }
.prose ul, .prose ol { padding-left: 1.25em; }
.prose li { margin: 0.5em 0; padding-left: 0.2em; }
.prose li::marker { color: var(--ink-3); }
.prose code { font-family: var(--mono); font-size: 0.86em; background: var(--paper-2); border: 1px solid var(--line-soft); padding: 1.5px 6px; border-radius: 5px; color: var(--ink); }
.prose pre { font-family: var(--mono); font-size: 13.5px; line-height: 1.55; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; overflow-x: auto; }
.prose pre code { background: none; border: 0; padding: 0; font-size: inherit; }
.prose blockquote { margin: 1.2em 0; padding: 2px 0 2px 20px; border-left: 2px solid var(--line); color: var(--ink-2); font-style: italic; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin: 1.2em 0; }
.prose th { text-align: left; font-weight: 620; color: var(--ink-2); border-bottom: 1px solid var(--ink-3); padding: 8px 12px; }
.prose td { border-bottom: 1px solid var(--line); padding: 9px 12px; vertical-align: top; color: var(--ink); }
.prose tr:hover td { background: var(--paper-2); }
.prose hr { border: 0; height: 1px; background: var(--line); margin: 2em 0; }

/* callout blocks derived from consequence labels — NO side stripes */
.note { border: 1px solid var(--line); background: var(--paper-2); border-radius: var(--radius); padding: 14px 16px; font-size: 15px; }
.note--warn { background: color-mix(in oklch, var(--warn) 8%, var(--paper)); border-color: color-mix(in oklch, var(--warn) 30%, var(--line)); }

/* side rail */
.rail { position: sticky; top: 82px; font-size: 14px; }
.rail__card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper-2); padding: 16px; }
.rail dl { margin: 0; display: grid; grid-template-columns: auto; gap: 12px; }
.rail dt { font-family: var(--mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-3); margin-bottom: 3px; }
.rail dd { margin: 0; color: var(--ink); }
.rail .repos { display: flex; flex-wrap: wrap; gap: 5px; }
.tag { font-family: var(--mono); font-size: 11px; background: var(--paper-3); border: 1px solid var(--line); border-radius: 5px; padding: 2px 7px; color: var(--ink-2); }
.rail__toc { margin-top: 18px; }
.rail__toc a { display: block; padding: 4px 0; color: var(--ink-2); font-size: 13.5px; border: 0; }
.rail__toc a:hover { color: var(--accent); text-decoration: none; }
.related { margin-top: 18px; }
.related a { display: flex; gap: 8px; padding: 7px 0; border-bottom: 1px solid var(--line-soft); color: var(--ink); font-size: 13.5px; border-left: 0; }
.related a .n { font-family: var(--mono); color: var(--ink-3); font-size: 12px; }
.related a:hover { color: var(--accent); text-decoration: none; }

/* ---------- figure / diagram ---------- */
.figure { margin: 30px 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--d-fill); overflow: hidden; box-shadow: var(--shadow-1); }
.figure__cap { display: flex; gap: 10px; align-items: baseline; padding: 12px 16px; border-top: 1px solid var(--line); background: var(--paper-2); font-size: 13px; color: var(--ink-2); }
.figure__cap b { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-3); font-weight: 600; }
.figure svg { display: block; width: 100%; height: auto; }
.figure__pad { padding: 22px; }

/* diagram primitives (used inside inline SVG via classes) */
.d-node { fill: var(--d-fill); stroke: var(--line); }
.d-label { fill: var(--ink); font-family: var(--sans); font-weight: 560; }
.d-sub { fill: var(--ink-3); font-family: var(--mono); }
.d-edge { stroke: var(--ink-3); fill: none; }
.d-flow { fill: var(--ink-2); font-family: var(--mono); }

/* ---------- system map (landing) ---------- */
.map { border: 1px solid var(--line); border-radius: 14px; background: var(--d-fill); box-shadow: var(--shadow-2); overflow: hidden; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 44px 0; color: var(--ink-3); font-size: 14px; margin-top: 40px; }
.foot__in { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.foot a { color: var(--ink-2); }

/* ---------- misc ---------- */
.prototype-flag { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--warn); border: 1px solid color-mix(in oklch, var(--warn) 40%, transparent); background: color-mix(in oklch, var(--warn) 8%, transparent); padding: 2px 8px; border-radius: 100px; }

@media (max-width: 940px) {
  .hero__grid { grid-template-columns: 1fr; gap: 34px; }
  .doc { grid-template-columns: 1fr; gap: 8px; }
  .rail { position: static; margin-top: 20px; }
  .area { grid-template-columns: 1fr; gap: 12px; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .hero { padding: 56px 0 24px; }
  .topbar nav a:not(.topbar__cta) { display: none; }
  .arow { grid-template-columns: 40px 1fr; }
  .arow .st { display: none; }
}