/* Unchained Labs — shared site stylesheet.
 *
 * Source of truth: github.com/Unchained-Labs/branding/site/brand.css
 * Depends on tokens.css being loaded first (or inlined above it).
 *
 * Every Unchained Labs Pages site uses this file unmodified. If a site needs a
 * component this does not provide, add it here and re-vendor, rather than
 * forking per repo — the whole point is that seven sites look like one org.
 */

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--ul-bg);
  color: var(--ul-body);
  font-family: var(--ul-font-body);
  font-size: var(--ul-text-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ---- rhythm ------------------------------------------------------------- */

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 var(--ul-space-6); }
.narrow { max-width: 720px; }          /* prose measure: 65-75 characters */

section { padding: var(--ul-space-16) 0; }
section + section { border-top: 1px solid var(--ul-line); }

/* ---- type -------------------------------------------------------------- */

h1, h2, h3, h4 {
  font-family: var(--ul-font-display);
  color: var(--ul-heading);
  letter-spacing: var(--ul-track-display);
  line-height: 1.15;
  margin: 0 0 var(--ul-space-4);
  font-weight: 700;
}

h1 { font-size: var(--ul-text-3xl); }
h2 { font-size: var(--ul-text-2xl); margin-top: 0; }
h3 { font-size: var(--ul-text-xl); font-weight: 600; margin-top: var(--ul-space-8); }
h4 { font-size: var(--ul-text-lg); font-weight: 600; }

p { margin: 0 0 var(--ul-space-4); }
p:last-child { margin-bottom: 0; }

.lead { font-size: var(--ul-text-lg); color: var(--ul-body); }
.muted { color: var(--ul-muted); }
.faint { color: var(--ul-faint); }

/* The label register: uppercase display, wide tracking. Structure, not argument. */
.label {
  font-family: var(--ul-font-display);
  font-size: var(--ul-text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--ul-track-label);
  color: var(--ul-faint);
  margin: 0 0 var(--ul-space-3);
}

a {
  color: var(--ul-accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--ul-accent) 35%, transparent);
  transition: border-color 120ms ease, color 120ms ease;
}
a:hover { color: var(--ul-accent-dim); border-bottom-color: var(--ul-accent-dim); }

:focus-visible {
  outline: 2px solid var(--ul-accent);
  outline-offset: 2px;
  border-radius: var(--ul-radius-sm);
}

strong { color: var(--ul-heading); font-weight: 600; }

/* ---- data face --------------------------------------------------------- */

code, kbd, pre, samp, .mono {
  font-family: var(--ul-font-mono);
  font-size: 0.9em;
  font-variant-ligatures: none;
}

:not(pre) > code {
  background: var(--ul-bg-inset);
  border: 1px solid var(--ul-line);
  border-radius: var(--ul-radius-sm);
  padding: 0.1em 0.35em;
  color: var(--ul-heading);
}

pre {
  background: var(--ul-bg-inset);
  border: 1px solid var(--ul-line);
  border-radius: var(--ul-radius);
  padding: var(--ul-space-4);
  overflow-x: auto;          /* wide content scrolls inside itself, never the page */
  line-height: 1.55;
  margin: 0 0 var(--ul-space-4);
}
pre code { background: none; border: 0; padding: 0; color: var(--ul-body); }

/* terminal transcript: a dim prompt, a bright command */
.term .p { color: var(--ul-faint); user-select: none; }
.term .c { color: var(--ul-heading); }
.term .ok { color: var(--ul-up); }
.term .wa { color: var(--ul-warn); }
.term .er { color: var(--ul-down); }
.term .ac { color: var(--ul-accent); }
.term .dim { color: var(--ul-muted); }

/* ---- header ------------------------------------------------------------ */

.site-head {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--ul-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ul-line);
}
.site-head .wrap {
  display: flex;
  align-items: center;
  gap: var(--ul-space-6);
  min-height: 60px;
}
.site-head .brand { display: flex; align-items: center; gap: var(--ul-space-3); border: 0; }
.site-head .brand svg, .site-head .brand img { height: 22px; width: auto; display: block; }
.site-head nav { margin-left: auto; display: flex; gap: var(--ul-space-5, 1.25rem); flex-wrap: wrap; }
.site-head nav a {
  border: 0;
  color: var(--ul-muted);
  font-size: var(--ul-text-sm);
}
.site-head nav a:hover { color: var(--ul-heading); }

/* ---- hero -------------------------------------------------------------- */

.hero { padding: var(--ul-space-16) 0 var(--ul-space-12); }
.hero h1 { font-size: var(--ul-text-4xl); max-width: 22ch; }
.hero .lead { max-width: 60ch; }
@media (max-width: 640px) { .hero h1 { font-size: var(--ul-text-2xl); } }

/* ---- badges / status --------------------------------------------------- */

.badges { display: flex; flex-wrap: wrap; gap: var(--ul-space-2); margin: 0 0 var(--ul-space-6); padding: 0; list-style: none; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--ul-font-mono);
  font-size: var(--ul-text-xs);
  padding: 0.25em 0.6em;
  border-radius: var(--ul-radius-pill);
  border: 1px solid var(--ul-line-strong);
  color: var(--ul-muted);
  background: var(--ul-bg-raised);
}
.badge.accent { border-color: var(--ul-accent-dim); color: var(--ul-accent); background: var(--ul-accent-wash); }

/* Status carries a glyph via ::before, never colour alone — see brand/palette.md.
 * This is the accessibility mitigation for the 26deg accent/status hue gap. */
.badge.up,
.badge.warn,
.badge.down { font-weight: 500; }
.badge.up   { border-color: var(--ul-up);   color: var(--ul-up);   background: var(--ul-up-wash); }
.badge.warn { border-color: var(--ul-warn); color: var(--ul-warn); background: var(--ul-warn-wash); }
.badge.down { border-color: var(--ul-down); color: var(--ul-down); background: var(--ul-down-wash); }
.badge.up::before   { content: "\2713"; }  /* ✓ */
.badge.warn::before { content: "!"; }
.badge.down::before { content: "\2717"; }  /* ✗ */

/* ---- buttons ----------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--ul-font-display);
  font-size: var(--ul-text-sm);
  font-weight: 600;
  padding: 0.6em 1.1em;
  border-radius: var(--ul-radius);
  border: 1px solid var(--ul-line-strong);
  color: var(--ul-heading);
  background: var(--ul-bg-raised);
  transition: border-color 120ms ease, background 120ms ease;
}
.btn:hover { border-color: var(--ul-accent-dim); color: var(--ul-heading); }
.btn.primary {
  background: var(--ul-accent);
  border-color: var(--ul-accent);
  color: var(--ul-on-accent);
}
.btn.primary:hover { background: var(--ul-accent-dim); border-color: var(--ul-accent-dim); color: var(--ul-on-accent); }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--ul-space-3); margin-top: var(--ul-space-6); }

/* ---- cards / grid ------------------------------------------------------ */

.grid { display: grid; gap: var(--ul-space-4); }
.grid.two   { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.card {
  background: var(--ul-bg-raised);
  border: 1px solid var(--ul-line);
  border-radius: var(--ul-radius-lg);
  padding: var(--ul-space-6);
}
a.card { border-bottom: 1px solid var(--ul-line); color: inherit; display: block; }
a.card:hover { border-color: var(--ul-accent-dim); }
.card h3 { margin: 0 0 var(--ul-space-2); font-size: var(--ul-text-lg); }
.card h3 code { font-size: 1em; background: none; border: 0; padding: 0; color: var(--ul-accent); }
.card p { color: var(--ul-body); font-size: var(--ul-text-sm); margin-bottom: 0; }

/* a stat tile: big mono figure, small label */
.stat .fig {
  font-family: var(--ul-font-mono);
  font-size: var(--ul-text-2xl);
  color: var(--ul-heading);
  line-height: 1.1;
  display: block;
}
.stat .fig.accent { color: var(--ul-accent); }

/* ---- tables ------------------------------------------------------------ */

.table-scroll { overflow-x: auto; margin: 0 0 var(--ul-space-4); }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--ul-text-sm);
}
th {
  font-family: var(--ul-font-display);
  font-size: var(--ul-text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--ul-track-label);
  color: var(--ul-faint);
  text-align: left;
  padding: var(--ul-space-2) var(--ul-space-3);
  border-bottom: 1px solid var(--ul-line-strong);
  white-space: nowrap;
}
td {
  padding: var(--ul-space-3);
  border-bottom: 1px solid var(--ul-line);
  vertical-align: top;
}
tbody tr:last-child td { border-bottom: 0; }
td.num { font-family: var(--ul-font-mono); text-align: right; white-space: nowrap; }

/* ---- callout ----------------------------------------------------------- */

.note {
  border-left: 2px solid var(--ul-accent);
  background: var(--ul-accent-wash);
  padding: var(--ul-space-4) var(--ul-space-6);
  border-radius: 0 var(--ul-radius) var(--ul-radius) 0;
  margin: 0 0 var(--ul-space-6);
}
.note.warn { border-left-color: var(--ul-warn); background: var(--ul-warn-wash); }
.note.down { border-left-color: var(--ul-down); background: var(--ul-down-wash); }
.note p:last-child { margin-bottom: 0; }

/* ---- lists ------------------------------------------------------------- */

ul.clean { list-style: none; padding: 0; margin: 0 0 var(--ul-space-4); }
ul.clean li { padding-left: 1.4em; position: relative; margin-bottom: var(--ul-space-2); }
ul.clean li::before {
  content: "";
  position: absolute;
  left: 0.25em;
  top: 0.7em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--ul-accent);
}

/* ---- footer ------------------------------------------------------------ */

.site-foot {
  border-top: 1px solid var(--ul-line);
  padding: var(--ul-space-8) 0;
  color: var(--ul-faint);
  font-size: var(--ul-text-sm);
}
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: var(--ul-space-4); align-items: center; }
.site-foot nav { margin-left: auto; display: flex; gap: var(--ul-space-4); flex-wrap: wrap; }
.site-foot a { color: var(--ul-muted); border: 0; }
.site-foot a:hover { color: var(--ul-accent); }

/* ---- media ------------------------------------------------------------- */

img, svg { max-width: 100%; }
figure { margin: 0 0 var(--ul-space-6); }
figcaption { color: var(--ul-faint); font-size: var(--ul-text-xs); margin-top: var(--ul-space-2); }

hr { border: 0; border-top: 1px solid var(--ul-line); margin: var(--ul-space-8) 0; }

/* ---- terminal demo player ---------------------------------------------- */

/* A muted autoplaying loop reads as a moving screenshot. No controls, no audio,
 * and `playsinline` so iOS does not hijack it into fullscreen. */
.demo {
  margin: 0 0 var(--ul-space-6);
  border-radius: var(--ul-radius-lg);
  overflow: hidden;
  border: 1px solid var(--ul-line);
  background: var(--ul-bg-inset);
  line-height: 0;                    /* kill the inline-video baseline gap */
}
.demo video {
  display: block;
  width: 100%;
  height: auto;
}
.demo figcaption {
  line-height: 1.5;
  padding: var(--ul-space-3) var(--ul-space-4);
  border-top: 1px solid var(--ul-line);
  background: var(--ul-bg-raised);
  color: var(--ul-faint);
  font-size: var(--ul-text-xs);
}

/* In the hero the demo is the primary object, so give it more room and a
 * slightly stronger edge than an inline one. */
.hero-demo {
  margin-top: var(--ul-space-8);
  border-color: var(--ul-line-strong);
  max-width: 900px;
}

/* Respect a reduced-motion preference: pause the loop and show the first frame.
 * An autoplaying loop is exactly what that setting exists to stop. */
@media (prefers-reduced-motion: reduce) {
  .demo video { animation-play-state: paused; }
}