/* hadur.ai — Direction B: technical editorial.
   No webfonts, no external assets, no JS. */

:root {
  --bg: #faf8f5;
  --ink: #211d16;
  --muted: #6b6154;
  --line: #e3dcd0;
  --card: #fffdf9;
  --accent: #9c3d1e;
  --accent-soft: #f6ece5;
  --serif: Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
}

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; line-height: 1.25; }
h1 { font-size: 2.4rem; }
h2 { font-size: 1.6rem; margin-top: 2.5rem; }
h3 { font-size: 1.25rem; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

code, pre { font-family: var(--mono); font-size: 0.9em; }
pre {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 0.9rem 1.1rem;
  overflow-x: auto;
}
code { background: var(--accent-soft); padding: 0.1em 0.3em; border-radius: 2px; }
pre code { background: none; padding: 0; }

blockquote {
  margin: 1.5rem 0;
  padding: 0.2rem 1.2rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

/* ---------- chrome ---------- */

.site-header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  align-items: baseline;
  padding: 1.1rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
}
.wordmark {
  font-family: var(--serif);
  font-size: 1.45rem;
  color: var(--ink);
  text-decoration: none;
}
.site-nav { display: flex; flex-wrap: wrap; gap: 0.2rem 1.1rem; }
.site-nav a { color: var(--ink); text-decoration: none; font-size: 0.95rem; }
.site-nav a:hover { color: var(--accent); text-decoration: underline; }

main { max-width: 72rem; margin: 0 auto; padding: 1.5rem clamp(1rem, 4vw, 3rem) 3rem; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.4rem clamp(1rem, 4vw, 3rem) 2.2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ---------- landing ---------- */

.hero { max-width: 46rem; padding: 3rem 0 1rem; }
.hero h1 { font-size: clamp(2.2rem, 6vw, 3.4rem); margin: 0 0 1rem; }
.hero-prose { font-size: 1.15rem; color: var(--muted); }
.hero-cta { margin-top: 1.6rem; display: flex; flex-wrap: wrap; gap: 0.8rem; }
.button {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  padding: 0.55rem 1.2rem;
  text-decoration: none;
  font-size: 0.95rem;
}
.button.ghost { background: none; color: var(--accent); border: 1px solid var(--accent); }

.masthead {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 2.5rem 0;
}
.stat { flex: 1 1 8rem; background: var(--card); padding: 1.2rem 1rem; text-align: center; }
.stat-n { display: block; font-family: var(--serif); font-size: 2.6rem; }
.stat-l { display: block; color: var(--muted); font-size: 0.8rem; letter-spacing: 0.06em; text-transform: uppercase; }

.loop { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin: 2.5rem 0; }
.loop h2 { margin-top: 0; }

.teaser { margin: 3rem 0 1rem; }
.teaser-frame {
  width: 100%;
  height: 420px;
  border: 1px solid var(--line);
  background: var(--card);
}

/* ---------- docs shell ---------- */

.docs { display: grid; grid-template-columns: 16rem minmax(0, 1fr); gap: 2.5rem; }
.docs-narrow { grid-template-columns: minmax(0, 1fr); max-width: 50rem; }
.toc { font-size: 0.85rem; }
.toc nav {
  position: sticky;
  top: 1.2rem;
  max-height: calc(100vh - 2.4rem);
  overflow-y: auto;
  border-right: 1px solid var(--line);
  padding-right: 1rem;
}
.toc a { display: block; color: var(--muted); text-decoration: none; padding: 0.12rem 0; }
.toc a:hover { color: var(--accent); }
.toc-l1 { font-family: var(--serif); color: var(--ink); margin-top: 0.6rem; }
.toc-l3 { padding-left: 1rem; }
.prose { min-width: 0; }
.prose img, .prose svg { max-width: 100%; }
.doc-stamp { color: var(--muted); font-size: 0.85rem; border-bottom: 1px solid var(--line); padding-bottom: 0.8rem; }
.lead { font-size: 1.1rem; color: var(--muted); }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
th, td { border: 1px solid var(--line); padding: 0.45rem 0.7rem; text-align: left; vertical-align: top; }
th { background: var(--card); font-family: var(--serif); font-weight: 500; }

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

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(19rem, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.card { background: var(--card); border: 1px solid var(--line); padding: 1rem 1.2rem; }
.card h3 { margin: 0 0 0.5rem; }
.card-id { color: var(--accent); font-family: var(--mono); font-size: 0.9em; margin-right: 0.3rem; }
.card-highlight { border-left: 4px solid var(--accent); background: var(--accent-soft); grid-column: 1 / -1; }
.badge {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--sans);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  padding: 0.15rem 0.5rem;
  vertical-align: middle;
}
.card-note { color: var(--muted); font-size: 0.9rem; border-top: 1px dashed var(--line); padding-top: 0.6rem; }
.subentries { padding-left: 1.1rem; }

/* ---------- demo ---------- */

.main-demo { max-width: none; padding: 0; }
.demo-banner {
  padding: 0.8rem clamp(1rem, 4vw, 3rem);
  background: var(--accent-soft);
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
.demo-frame {
  display: block;
  width: 100%;
  height: calc(100vh - 10rem);
  border: 0;
  background: var(--card);
}

/* ---------- responsive ---------- */

@media (max-width: 720px) {
  .loop { grid-template-columns: 1fr; }
  .docs { grid-template-columns: minmax(0, 1fr); }
  .toc nav { position: static; max-height: none; border-right: 0; border-bottom: 1px solid var(--line); padding: 0 0 0.8rem; margin-bottom: 1rem; }
  .card-highlight { grid-column: auto; }
}