/* AURORA Agent site — single stylesheet, no external assets. */

:root {
  --bg: #fbfaf8;
  --bg-raised: #ffffff;
  --bg-inset: #f1efeb;
  --text: #1c1b19;
  --text-muted: #5b5850;
  --border: #dcd8d0;
  --accent: #a4500f;
  --accent-soft: #f7e8db;
  --good: #2c6e3f;
  --bad: #a1332c;
  --mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171614;
    --bg-raised: #1f1e1b;
    --bg-inset: #26241f;
    --text: #e8e5df;
    --text-muted: #a39e93;
    --border: #3a372f;
    --accent: #e08b45;
    --accent-soft: #33261a;
    --good: #6cbb84;
    --bad: #e08a83;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  overflow-x: hidden;
}

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

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header / nav */

header.site {
  border-bottom: 1px solid var(--border);
  background: var(--bg-raised);
}

header.site .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 1.25rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.brand {
  font-weight: 650;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.brand svg { width: 1.15em; height: 1.15em; }
.brand:hover { text-decoration: none; color: var(--accent); }

nav.site-nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; margin-left: auto; }
nav.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}
nav.site-nav a:hover, nav.site-nav a[aria-current="page"] { color: var(--accent); }
nav.site-nav a[aria-current="page"] { font-weight: 600; }

/* Content */

main { padding: 2.5rem 0 3rem; }

h1 { font-size: 1.8rem; line-height: 1.25; margin: 0 0 1rem; letter-spacing: -0.01em; }
h2 { font-size: 1.3rem; margin: 2.4rem 0 0.7rem; letter-spacing: -0.005em; }
h3 { font-size: 1.05rem; margin: 1.8rem 0 0.5rem; }

p { margin: 0.8rem 0; }

.lede { font-size: 1.15rem; color: var(--text-muted); }
.lede strong { color: var(--text); }

.tagline {
  margin: -0.4rem 0 1.1rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.01em;
}

hr { border: none; border-top: 1px solid var(--border); margin: 2.5rem 0; }

ul, ol { padding-left: 1.4rem; }
li { margin: 0.35rem 0; }

/* Code */

code, pre {
  font-family: var(--mono);
  font-size: 0.86em;
}
code {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.08em 0.35em;
  overflow-wrap: anywhere;
}
pre {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.8rem 1rem;
  overflow-x: auto;
  line-height: 1.5;
}
pre code { background: none; border: none; padding: 0; }

/* Tables */

.table-scroll { overflow-x: auto; margin: 1rem 0; }
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
  min-width: 28rem;
}
th, td {
  border: 1px solid var(--border);
  padding: 0.4rem 0.65rem;
  text-align: left;
  vertical-align: top;
}
th { background: var(--bg-inset); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.yes { color: var(--good); font-weight: 600; }
td.no { color: var(--bad); font-weight: 600; }
tr.hl td { background: var(--accent-soft); }

/* Callouts */

.callout {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  background: var(--bg-raised);
  border-radius: 6px;
  padding: 0.9rem 1.1rem;
  margin: 1.4rem 0;
}
.callout p:first-child { margin-top: 0; }
.callout p:last-child { margin-bottom: 0; }

.boundary {
  font-size: 0.95rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.8rem 1rem;
  margin: 1.6rem 0;
  background: var(--bg-raised);
}

/* Definition-style stat rows */

dl.facts { margin: 1rem 0; }
dl.facts dt { font-weight: 600; margin-top: 0.9rem; }
dl.facts dd { margin: 0.15rem 0 0 0; color: var(--text-muted); }
dl.facts dd code { color: var(--text); }

/* FAQ */

.faq-item { margin: 1.8rem 0; }
.faq-item h2 { margin: 0 0 0.4rem; font-size: 1.12rem; }

/* Doc cards */

.doc-entry { margin: 1.6rem 0; }
.doc-entry h2 { margin: 0 0 0.3rem; font-size: 1.08rem; }
.doc-entry p { margin: 0.25rem 0 0; color: var(--text-muted); }
.doc-entry p a { color: var(--accent); }

/* Footer */

footer.site {
  border-top: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text-muted);
  font-size: 0.9rem;
}
footer.site .wrap { padding-top: 1.4rem; padding-bottom: 1.8rem; }
footer.site p { margin: 0.45rem 0; }
footer.site a { color: var(--text-muted); }
footer.site a:hover { color: var(--accent); }

@media (max-width: 480px) {
  h1 { font-size: 1.5rem; }
  body { font-size: 1rem; }
  nav.site-nav { margin-left: 0; }
}

/* Certificate Explorer (explore.html) */

.explorer-step { margin: 2.6rem 0; }

.explorer-bar { margin: 1.2rem 0 1.4rem; }
.explorer-bar-track {
  height: 1.1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-inset);
  overflow: hidden;
}
.explorer-bar-fill {
  height: 100%;
  width: 1.45%;
  min-width: 5px;
  background: var(--accent);
}
.explorer-bar-legend {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.35rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.explorer-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.5;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.02rem 0.5rem;
  margin: 0 0.15rem 0.1rem 0;
  vertical-align: middle;
}

details.explorer-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-raised);
  margin: 0.6rem 0;
}
details.explorer-card > summary {
  cursor: pointer;
  padding: 0.55rem 0.9rem;
  font-size: 0.95rem;
}
details.explorer-card > summary:hover { color: var(--accent); }
details.explorer-card[open] > summary { border-bottom: 1px solid var(--border); }
.explorer-card-body { padding: 0.7rem 0.9rem; font-size: 0.93rem; }
.explorer-card-body p:first-child { margin-top: 0; }
.explorer-card-body > :last-child { margin-bottom: 0; }

pre.explorer-json {
  margin: 0.6rem 0 0;
  max-height: 24rem;
  overflow: auto;
  font-size: 0.78rem;
}

.explorer-verdict {
  border: 1px solid var(--bad);
  border-radius: 6px;
  background: var(--bg-raised);
  padding: 0.9rem 1.1rem;
  margin: 1rem 0;
}
.explorer-verdict p:first-child { margin-top: 0; }
.explorer-witness {
  border-left: 3px solid var(--bad);
  padding: 0.15rem 0 0.15rem 0.8rem;
  margin: 0.7rem 0 0;
  font-size: 0.93rem;
}
.explorer-status-bad {
  color: var(--bad);
  font-weight: 700;
  font-family: var(--mono);
  font-size: 0.95em;
}

.explorer-verify {
  border: 1px solid var(--good);
  border-radius: 6px;
  background: var(--bg-raised);
  padding: 0.9rem 1.1rem;
  margin: 1rem 0;
}
.explorer-verify p { margin: 0; }
.explorer-status-good {
  color: var(--good);
  font-weight: 700;
  font-family: var(--mono);
  font-size: 0.95em;
}

.explorer-hash {
  font-family: var(--mono);
  font-size: 0.82rem;
  overflow-wrap: anywhere;
  color: var(--text);
}
.explorer-hash-headline { font-weight: 700; color: var(--accent); }

.explorer-limitations blockquote {
  margin: 0.6rem 0 0;
  padding-left: 0.9rem;
  border-left: 3px solid var(--accent);
  font-style: italic;
}