/* system.css — Kito Architects machine contract (DESIGN.md v1.1 rev 2)
   Tokens + primitives ONLY. Section styles live in styles.css. */

/* ---------- fonts (plan.md §media binaries) ---------- */
@font-face {
  font-family: "GT Zirkon";
  src: url("fonts/GT-Zirkon-Book.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "GT Zirkon";
  src: url("fonts/GT-Zirkon-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Söhne";
  src: url("fonts/Sohne-Buch-383b619813ba6882f6f9025c0f320367.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Söhne";
  src: url("fonts/Sohne-Halbfett-f50be91b3697ccf4cb2fc6be828963fe.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* ---------- tokens ---------- */
:root {
  --canvas: #eae8e3;
  --canvas-raised: #f2f0eb;
  --ink: #1a1917;
  --ink-muted: #44423e;
  --accent: #b4552d;
  --accent-ink: #eae8e3;
  --line: rgba(26, 25, 23, 0.18);

  --font-display: "GT Zirkon", "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-body: "Söhne", "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --size-display-xl: clamp(4.5rem, 12vw, 13rem);
  --size-display-l: clamp(2.75rem, 6vw, 5.5rem);
  --size-display-m: clamp(1.75rem, 3vw, 2.75rem);
  --size-lede: 1.25rem;
  --size-body: 1rem;
  --size-caption: 0.8125rem;

  --leading-display: 0.9;
  --leading-body: 1.6;
  --track-display: -0.03em;

  --space-0: 0;
  --space-8: 8px;
  --space-16: 16px;
  --space-24: 24px;
  --space-40: 40px;
  --space-64: 64px;
  --space-104: 104px;
  --space-168: 168px;

  --gutter: clamp(20px, 4vw, 64px);
  --section-pad: clamp(64px, 10vh, 168px);
  --maxw: 1440px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Tailwind @theme mirror (build-time compatibility) */
@theme {
  --color-canvas: #eae8e3;
  --color-canvas-raised: #f2f0eb;
  --color-ink: #1a1917;
  --color-ink-muted: #44423e;
  --color-accent: #b4552d;
  --color-accent-ink: #eae8e3;
  --font-display: "GT Zirkon", "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-body: "Söhne", "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* ---------- base ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: var(--ink); color: var(--canvas); }

/* ---------- typographic primitives ---------- */
.t-display-xl {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--size-display-xl);
  line-height: var(--leading-display);
  letter-spacing: var(--track-display);
}
.t-display-l {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--size-display-l);
  line-height: 1.0;
  letter-spacing: -0.02em;
}
.t-display-m {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--size-display-m);
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.t-lede { font-size: var(--size-lede); line-height: 1.5; }
.t-caption {
  font-family: var(--font-mono);
  font-size: var(--size-caption);
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.t-numeral {
  font-family: var(--font-mono);
  font-size: var(--size-caption);
  letter-spacing: 0.08em;
  color: var(--ink);
}
.t-tick {
  display: inline-block;
  width: 10px;
  height: 1px;
  background: var(--accent);
  vertical-align: middle;
  margin-right: var(--space-8);
}

/* ---------- primitives (the only button/input/label specs) ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  border-radius: 0;
  padding: var(--space-16) var(--space-24);
}
.btn-primary {
  background: var(--ink);
  color: var(--canvas);
  border: 1px solid var(--ink);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-ghost {
  background: none;
  color: var(--ink);
  border: 1px solid var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: var(--canvas); }
.link-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 6px;
  text-decoration-thickness: 1px;
}
.link-text:hover { text-decoration-color: var(--accent); }

.field {
  display: block;
  width: 100%;
  background: var(--canvas-raised);
  border: 1px solid var(--line);
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--ink);
  padding: var(--space-16);
}
.field:focus { outline: none; border-color: var(--ink); }
.field-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: var(--space-8);
}

/* eyebrow: [ 01 — LABEL ] */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.eyebrow::before { content: "[ "; color: var(--ink-muted); }
.eyebrow::after { content: " ]"; color: var(--ink-muted); }

/* gallery plate: images sit in mats */
.mat {
  background: var(--canvas-raised);
  border: 1px solid var(--line);
  padding: var(--space-24);
}
.mat img { display: block; width: 100%; height: auto; filter: saturate(0.82); }

/* rules */
.rule { border: 0; border-top: 1px solid var(--line); }
.rule-accent { border: 0; border-top: 2px solid var(--accent); }

/* focus floor */
:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

/* reduced motion: primitives hold no motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}