/* Rig — no framework, no bundler. This landing page is hand-written; the
   catalog, schema, doc and example pages come from tools/site/gen.mjs and add
   pages.css. The only script anywhere is the catalog filter, which degrades to
   the full list.
   Accent is the fill colour from examples/minimal-scene.json: [0.25, 0.65, 1, 1]. */

:root {
  --bg: #0b0d10;
  --surface: #12151b;
  --surface-2: #171b22;
  --line: #232936;
  --text: #e6e9ef;
  --muted: #8d97a8;
  --accent: #40a6ff;
  --accent-dim: #1d4f7d;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --measure: 62ch;
  --page: 68rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Full-bleed hero tint — independent of content max-width */
body::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: min(42rem, 90vh);
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(900px 420px at 12% -10%, rgba(64, 166, 255, 0.13), transparent 70%),
    radial-gradient(700px 360px at 88% 0%, rgba(64, 166, 255, 0.06), transparent 70%);
}

body > * { position: relative; z-index: 1; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

em { color: #f2f5fa; font-style: italic; }

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.1em 0.36em;
  color: #cfe6ff;
}

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

.hero {
  max-width: var(--page);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 4.5rem;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-bottom: 5rem;
}

.wordmark {
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.94rem;
}

.nav-links a {
  color: var(--muted);
  padding: 0.55rem 0.7rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }

.nav-links .ghost {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.45rem 0.9rem;
  color: var(--text);
}
.nav-links .ghost:hover { border-color: var(--accent-dim); background: var(--surface); }

.kicker {
  font-family: var(--mono);
  font-size: 0.98rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin: 0 0 0.85rem;
  font-weight: 600;
}

h1 {
  font-size: clamp(2.4rem, 6.2vw, 4.1rem);
  line-height: 1.06;
  letter-spacing: -0.028em;
  margin: 0 0 1.1rem;
  font-weight: 640;
}

.tagline {
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  color: var(--accent);
  margin: 0 0 0.7rem;
  font-style: italic;
  letter-spacing: -0.01em;
}

.expansion {
  font-size: 0.98rem;
  color: var(--muted);
  margin: 0 0 2.2rem;
  letter-spacing: 0.01em;
}

.lede {
  max-width: var(--measure);
  font-size: 1.13rem;
  color: #c3ccdb;
  margin: 0 0 2.4rem;
}

.cta { display: flex; gap: 0.8rem; flex-wrap: wrap; margin: 0 0 2.6rem; }

.btn {
  display: inline-block;
  padding: 0.72rem 1.5rem;
  border-radius: 7px;
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 0.98rem;
  font-weight: 500;
  background: var(--surface);
}
.btn:hover { border-color: var(--accent-dim); text-decoration: none; }

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #04121f;
  font-weight: 600;
}
.btn.primary:hover { background: #5cb4ff; border-color: #5cb4ff; }

.badges { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0; }

.badge {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
}

/* ---------- sections ---------- */

main { max-width: var(--page); margin: 0 auto; padding: 0 1.5rem; }

section {
  padding: 3.6rem 0;
  border-top: 1px solid var(--line);
}

h2 {
  font-size: clamp(1.5rem, 3.2vw, 2.05rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 1.2rem;
  font-weight: 620;
}

h3 {
  font-size: 1rem;
  margin: 0 0 0.6rem;
  font-weight: 620;
  letter-spacing: -0.005em;
}

section p { max-width: var(--measure); margin: 0 0 1.1rem; color: #c3ccdb; }
section p:last-child { margin-bottom: 0; }

.aside {
  font-size: 0.94rem;
  color: var(--muted);
  border-left: 2px solid var(--accent-dim);
  padding-left: 1rem;
  margin-top: 1.8rem !important;
}

.scene {
  margin: 1.6rem 0 2rem;
  padding: 0;
  max-width: 100%;
}
.scene img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #090b0e;
}
.scene figcaption {
  margin-top: 0.7rem;
  font-size: 0.88rem;
  color: var(--muted);
  max-width: var(--measure);
}

/* ---------- domain chips ---------- */

.domains {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
}

.domains a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.92rem;
}
.domains a:hover {
  border-color: var(--accent-dim);
  color: var(--accent);
  text-decoration: none;
}

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

.grid { display: grid; gap: 1rem; margin: 2rem 0 0; }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.split {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  margin-top: 2rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.3rem;
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
  max-width: none;
}

.card.accent { border-color: var(--accent-dim); background: linear-gradient(var(--surface), #0e1620); }
.card.accent h3 { color: var(--accent); }
.card h3 a { color: inherit; }

.card.negative h3 { color: #e6e9ef; }
.card.negative h3::before { content: "— "; color: var(--muted); }

/* ---------- code ---------- */

.code {
  background: #090b0e;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  margin: 1.6rem 0;
  font-size: 0.86rem;
  line-height: 1.6;
}

.code code {
  background: none;
  border: none;
  padding: 0;
  color: #cfe6ff;
  font-size: inherit;
  white-space: pre-wrap;
  word-break: break-word;
}

.code.sude code { color: var(--accent); white-space: pre; word-break: normal; }

/* ---------- table ---------- */

.table-wrap { overflow-x: auto; margin-top: 2rem; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
}

th, td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  font-weight: 600;
}

td:first-child { color: var(--text); font-weight: 500; }
td { color: var(--muted); }

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

footer {
  max-width: var(--page);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  border-top: 1px solid var(--line);
  font-size: 0.93rem;
}

footer p { margin: 0 0 0.5rem; }
footer .wordmark { margin-bottom: 0.8rem; }
footer a { color: var(--muted); }
footer a:hover { color: var(--accent); }
.muted { color: #5f6878; }
.muted-inline {
  font-size: 0.88rem;
  color: var(--muted);
  margin: -0.6rem 0 1.1rem !important;
}

@media (prefers-reduced-motion: no-preference) {
  a, .btn { transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease; }
}

/* Stack comparison table as cards below ~48rem */
@media (max-width: 48rem) {
  .table-wrap { overflow: visible; }

  table, thead, tbody, th, td, tr { display: block; width: 100%; }

  thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

  tr {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 1rem 1.1rem;
    margin-bottom: 0.9rem;
  }

  td {
    border: none;
    padding: 0.35rem 0;
    color: var(--muted);
  }

  td:first-child {
    color: var(--text);
    font-weight: 620;
    margin-bottom: 0.4rem;
  }

  td::before {
    content: attr(data-label);
    display: block;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--muted);
    margin-bottom: 0.15rem;
    font-weight: 600;
  }

  td:first-child::before { display: none; }
}

@media (max-width: 34rem) {
  body { font-size: 16px; }
  nav { padding-bottom: 3rem; }
  section { padding: 2.8rem 0; }
  .grid.two { grid-template-columns: 1fr; }
  .desk-break { display: none; }
  .hero { padding: 1.2rem 1.1rem 3.2rem; }
  main, footer { padding-left: 1.1rem; padding-right: 1.1rem; }
}