/* ============================================================
   HeyCerebra — Legal Pages Stylesheet
   Design: dark mode, violet accents, sober and professional
   No external dependencies. Pure CSS.
   ============================================================ */

/* ── Custom properties ──────────────────────────────────────── */
:root {
  --bg-page:       #09090f;
  --bg-card:       #0f1626;
  --bg-card-alt:   #111d33;
  --border:        #1e2d4a;
  --border-accent: #3730a3;
  --accent:        #7c3aed;
  --accent-mid:    #8b5cf6;
  --accent-light:  #a78bfa;
  --accent-faint:  #1e1b4b;
  --text-primary:  #f1f5f9;
  --text-secondary:#94a3b8;
  --text-muted:    #64748b;
  --link:          #a78bfa;
  --link-hover:    #c4b5fd;
  --tag-bg:        #1e1b4b;
  --tag-text:      #c4b5fd;
  --warn-bg:       #1c1208;
  --warn-border:   #78350f;
  --warn-text:     #fbbf24;
  --radius:        8px;
  --radius-sm:     4px;
  --max-width:     780px;
  --font:          system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* ── Reset & base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Skip to main (accessibility) ──────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  z-index: 1000;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { top: 0; }

/* ── Header ─────────────────────────────────────────────────── */
.site-header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.site-logo img { height: 28px; width: auto; }
.site-logo:focus-visible { outline: 2px solid var(--accent-light); outline-offset: 3px; border-radius: var(--radius-sm); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--text-primary); background: var(--accent-faint); }
.site-nav a:focus-visible { outline: 2px solid var(--accent-light); outline-offset: 2px; }
.site-nav a.active { color: var(--accent-light); }

/* ── Main content wrapper ───────────────────────────────────── */
main {
  flex: 1;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

/* ── Page hero ──────────────────────────────────────────────── */
.page-hero {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.page-badge {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.page-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 0.5rem;
}

.page-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Table of contents ──────────────────────────────────────── */
.toc {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
}

.toc-title {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.toc ol {
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.toc a {
  color: var(--link);
  text-decoration: none;
  font-size: 0.9rem;
}
.toc a:hover { color: var(--link-hover); text-decoration: underline; }
.toc a:focus-visible { outline: 2px solid var(--accent-light); outline-offset: 2px; border-radius: 2px; }

/* ── Section card ───────────────────────────────────────────── */
.section-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  margin-bottom: 1.25rem;
  scroll-margin-top: 80px;
}

.section-card h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-card h2 .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--accent-faint);
  color: var(--accent-light);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50%;
  flex-shrink: 0;
}

.section-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 1.25rem 0 0.5rem;
}

.section-card p, .section-card li {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.section-card ul, .section-card ol {
  padding-left: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin: 0.5rem 0;
}

.section-card p + p { margin-top: 0.75rem; }
.section-card p + ul, .section-card p + ol { margin-top: 0.5rem; }

/* ── Placeholder highlight ──────────────────────────────────── */
.placeholder {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  color: var(--warn-text);
  border-radius: var(--radius-sm);
  padding: 0.1rem 0.4rem;
  font-size: 0.85em;
  font-family: ui-monospace, monospace;
  white-space: nowrap;
}

/* ── Callout box ────────────────────────────────────────────── */
.callout {
  background: var(--accent-faint);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  font-size: 0.9rem;
  color: var(--tag-text);
  line-height: 1.65;
}

.callout-warn {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  color: var(--warn-text);
}

/* ── Data table ─────────────────────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 0.75rem 0;
}

.data-table th {
  background: var(--bg-card-alt);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-align: left;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: top;
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); }

/* ── Links ──────────────────────────────────────────────────── */
a { color: var(--link); }
a:hover { color: var(--link-hover); }
a:focus-visible { outline: 2px solid var(--accent-light); outline-offset: 2px; border-radius: 2px; }

/* ── Index cards (for legal index page) ────────────────────── */
.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.index-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
}

.index-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-alt);
  transform: translateY(-2px);
}

.index-card:focus-visible {
  outline: 2px solid var(--accent-light);
  outline-offset: 3px;
}

.index-card-icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.index-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.index-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.index-card-link {
  font-size: 0.8rem;
  color: var(--accent-light);
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* ── Contact page ───────────────────────────────────────────── */
.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.contact-item:last-child { border-bottom: none; }
.contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.contact-value {
  font-size: 0.95rem;
  color: var(--text-primary);
}

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: color 0.15s;
}
.footer-nav a:hover { color: var(--text-secondary); }

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 600px) {
  html { font-size: 16px; }
  .header-inner { height: 56px; }
  .site-nav { display: none; }
  .section-card { padding: 1.25rem 1.25rem; }
  .toc { padding: 1rem 1.25rem; }
  main { padding: 1.75rem 1rem 3rem; }
  .data-table { font-size: 0.82rem; }
  .data-table th, .data-table td { padding: 0.5rem 0.65rem; }
  .index-grid { grid-template-columns: 1fr; }
}

/* ── Focus styles ───────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent-light);
  outline-offset: 2px;
}