/* =====================================================
   Shared layout for legal, policy, and documentation pages.
   Requires /assets/css/styles.css (design tokens, nav, footer, typography).
   ===================================================== */

body.doc-page {
  background: var(--brand-slate-50);
  color: var(--brand-ink);
}

/* ── Doc nav tabs (sits inside .nav-inner) ── */
.doc-nav .nav-inner {
  gap: var(--space-3);
}

.doc-nav-tabs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
  flex-wrap: wrap;
}

.doc-nav-tabs a {
  color: var(--slate-600);
  font-size: var(--fs-meta);
  font-weight: 600;
  text-decoration: none;
  padding: 0.45rem 0.85rem;
  border-radius: var(--r-f);
  border: 1px solid transparent;
  transition: color var(--t1) ease, background var(--t1) ease, border-color var(--t1) ease, transform var(--t1) var(--ease);
  -webkit-tap-highlight-color: transparent;
}

.doc-nav-tabs a:hover {
  color: var(--brand-blue-300);
  background: color-mix(in srgb, var(--brand-blue-300) 6%, transparent);
}

.doc-nav-tabs a:active {
  transform: scale(0.98);
}

.doc-nav-tabs a[aria-current="page"] {
  color: var(--brand-blue-300);
  background: color-mix(in srgb, var(--brand-blue-300) 8%, transparent);
  border-color: var(--brand-slate-200);
  font-weight: 700;
}

.doc-hero .eyebrow {
  display: inline-block;
  margin-bottom: var(--space-3);
}

.doc-hero .eyebrow::after {
  left: 50%;
  width: 2.75rem;
  transform: translateX(-50%) scaleX(1);
  transform-origin: center;
}

/* ── Page hero ── */
.doc-hero {
  background: var(--brand-slate-50);
  padding: clamp(2.25rem, 5vw, 3.25rem) 0 clamp(1.25rem, 3vw, 1.75rem);
  border-bottom: 1px solid var(--brand-slate-200);
  text-align: center;
}

.doc-hero .container {
  max-width: 42rem;
}

.doc-hero h1 {
  font-size: var(--fs-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--slate-900);
  margin: 0 0 0.65rem;
  line-height: 1.12;
  text-wrap: balance;
}

.doc-meta {
  margin: 0;
  font-size: var(--fs-meta);
  color: var(--slate-500);
  font-weight: 600;
}

/* ── Two-column layout ── */
.doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
  gap: var(--space-6);
  padding: clamp(2rem, 4vw, var(--section-y)) 0;
  align-items: start;
}

.doc-layout--wide {
  grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
  max-width: min(var(--max-w), 100% - 2.5rem);
}

/* ── Sidebar TOC ── */
.legal-toc,
.kb-toc,
.doc-toc {
  position: sticky;
  top: calc(var(--nav-h) + var(--space-3));
  height: fit-content;
  background: var(--white);
  border-radius: var(--card-radius);
  padding: var(--card-pad);
  box-shadow: var(--sh-sm);
  border: 1px solid var(--slate-200);
}

.legal-toc h3,
.kb-toc h3,
.doc-toc h3 {
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate-900);
  margin: 0 0 var(--space-3);
}

.legal-toc ul,
.kb-toc ul,
.doc-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.legal-toc li,
.kb-toc li,
.doc-toc li {
  margin-bottom: 0.35rem;
}

.legal-toc a,
.kb-toc a,
.doc-toc a {
  color: var(--slate-600);
  text-decoration: none;
  font-size: var(--fs-meta);
  font-weight: 600;
  display: block;
  padding: 0.35rem 0 0.35rem 0.65rem;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  transition: color var(--t1) ease, border-color var(--t1) ease, background var(--t1) ease;
}

.legal-toc a:hover,
.kb-toc a:hover,
.doc-toc a:hover {
  color: var(--blue);
  border-left-color: var(--blue);
  background: rgba(30, 94, 255, 0.04);
}

.legal-toc ul ul,
.kb-toc ul ul {
  margin-top: 0.25rem;
  margin-left: 0.5rem;
}

.legal-toc ul ul a,
.kb-toc ul ul a {
  font-size: 0.74rem;
  font-weight: 500;
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
}

/* ── Mobile TOC (KB) ── */
.kb-mobile-toc,
.doc-mobile-toc {
  display: none;
  margin-bottom: var(--space-4);
  border: 1px solid var(--slate-200);
  border-radius: var(--card-radius);
  background: var(--white);
  box-shadow: var(--sh-sm);
}

.kb-mobile-toc summary,
.doc-mobile-toc summary {
  cursor: pointer;
  font-weight: 700;
  font-size: var(--fs-body);
  color: var(--slate-900);
  padding: var(--space-3);
  list-style: none;
}

.kb-mobile-toc summary::-webkit-details-marker,
.doc-mobile-toc summary::-webkit-details-marker {
  display: none;
}

.kb-mobile-toc ul,
.doc-mobile-toc ul {
  list-style: none;
  margin: 0;
  padding: 0 var(--space-3) var(--space-3);
}

.kb-mobile-toc li,
.doc-mobile-toc li {
  margin-bottom: 0.35rem;
}

.kb-mobile-toc a,
.doc-mobile-toc a {
  color: var(--slate-600);
  text-decoration: none;
  font-size: var(--fs-meta);
  font-weight: 600;
  display: block;
  padding: 0.35rem 0;
}

.kb-mobile-toc a:hover,
.doc-mobile-toc a:hover {
  color: var(--blue);
}

/* ── Main content ── */
.legal-content,
.kb-content,
.doc-content {
  min-width: 0;
}

.legal-content h2,
.kb-content h2,
.doc-content h2 {
  font-size: clamp(1.35rem, 2.5vw, 1.65rem);
  color: var(--slate-900);
  margin: 0 0 var(--space-3);
  font-weight: 800;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  line-height: 1.2;
}

.legal-content h2::before,
.kb-content h2::before,
.doc-content h2::before {
  content: '';
  flex: 0 0 auto;
  width: 4px;
  height: 1.35em;
  max-height: 1.75rem;
  background: linear-gradient(180deg, var(--blue), var(--gold));
  border-radius: var(--r-sm);
}

.legal-section,
.kb-section,
.doc-section {
  margin-bottom: clamp(2rem, 4vw, 2.75rem);
  scroll-margin-top: var(--anchor-offset);
}

.legal-section:last-of-type,
.kb-section:last-of-type,
.doc-section:last-of-type {
  margin-bottom: 0;
}

.legal-section h3,
.kb-section h3,
.doc-section h3 {
  font-size: var(--fs-h3);
  color: var(--slate-800);
  margin: var(--space-5) 0 var(--space-2);
  font-weight: 700;
}

.legal-section p,
.kb-section p,
.doc-section p {
  font-size: var(--fs-body);
  color: var(--slate-600);
  line-height: 1.7;
  margin-bottom: var(--space-3);
}

.legal-section ul,
.kb-section ul,
.doc-section ul {
  margin: 0 0 var(--space-4) 1.25rem;
  padding: 0;
}

.legal-section li,
.kb-section li,
.doc-section li {
  font-size: var(--fs-body);
  color: var(--slate-600);
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.legal-section li::marker,
.kb-section li::marker,
.doc-section li::marker {
  color: var(--blue);
}

.legal-section a,
.kb-section a,
.doc-section a {
  color: var(--blue);
  font-weight: 600;
  text-decoration: none;
  transition: color var(--t1) ease;
}

.legal-section a:hover,
.kb-section a:hover,
.doc-section a:hover {
  color: var(--blue-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-section code,
.kb-section code,
.doc-section code {
  font-size: 0.88em;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--r-sm);
  padding: 0.1em 0.35em;
}

/* ── Callouts & cards ── */
.legal-callout,
.kb-callout,
.doc-callout {
  background: rgba(30, 94, 255, 0.06);
  border-left: 4px solid var(--blue);
  padding: var(--space-4);
  border-radius: var(--r-md);
  margin: var(--space-4) 0;
}

.legal-callout p,
.kb-callout p,
.doc-callout p {
  margin: 0;
  font-weight: 600;
  color: var(--slate-800);
}

.legal-data-grid,
.doc-data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--grid-gap);
  margin: var(--space-4) 0;
}

.legal-data-card,
.doc-data-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--card-radius);
  padding: var(--space-4);
  transition: border-color var(--t1) ease, box-shadow var(--t1) ease, transform var(--t1) var(--ease);
}

.legal-data-card:hover,
.doc-data-card:hover {
  border-color: rgba(30, 94, 255, 0.28);
  box-shadow: var(--sh-sm);
}

.legal-data-card:active,
.doc-data-card:active {
  transform: scale(0.99);
}

.legal-data-card h4,
.doc-data-card h4 {
  font-size: var(--fs-body);
  color: var(--blue-dark);
  margin: 0 0 0.35rem;
  font-weight: 700;
}

.legal-data-card p,
.doc-data-card p {
  font-size: var(--fs-meta);
  color: var(--slate-600);
  margin: 0;
  line-height: 1.55;
}

/* ── KB tables ── */
.kb-table-wrap,
.doc-table-wrap {
  overflow-x: auto;
  margin: var(--space-4) 0;
  border: 1px solid var(--slate-200);
  border-radius: var(--card-radius);
  box-shadow: var(--sh-sm);
  -webkit-overflow-scrolling: touch;
}

.kb-table,
.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-meta);
  min-width: 520px;
}

.kb-table th,
.kb-table td,
.doc-table th,
.doc-table td {
  padding: 0.7rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--slate-200);
  vertical-align: top;
}

.kb-table th,
.doc-table th {
  background: var(--slate-50);
  color: var(--slate-800);
  font-weight: 700;
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.kb-table tbody tr:hover,
.doc-table tbody tr:hover {
  background: rgba(30, 94, 255, 0.03);
}

.kb-formula,
.doc-formula {
  margin: var(--space-3) 0;
  padding: var(--space-3);
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--r-md);
  overflow-x: auto;
}

/* ── Back to top ── */
.doc-back-top {
  position: fixed;
  bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
  right: 1rem;
  z-index: 150;
  width: 44px;
  height: 44px;
  background: var(--blue);
  color: var(--white);
  border-radius: var(--r-f);
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: var(--sh-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity var(--t1) ease, transform var(--t1) var(--ease), background var(--t1) ease;
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 700;
  border: none;
}

.doc-back-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.doc-back-top:hover {
  background: var(--blue-dark);
}

.doc-back-top:active {
  transform: scale(0.96);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .doc-layout,
  .doc-layout--wide {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    padding-top: var(--space-5);
    padding-bottom: var(--space-5);
  }

  .legal-toc,
  .kb-toc,
  .doc-toc {
    display: none;
  }

  .kb-mobile-toc,
  .doc-mobile-toc {
    display: block;
  }
}

@media (max-width: 900px) {
  .doc-nav-tabs {
    width: 100%;
    margin-left: 0;
    justify-content: flex-start;
    gap: 0.35rem;
  }

  .doc-nav .nav-inner {
    flex-wrap: wrap;
    height: auto;
    min-height: var(--nav-h);
    padding-block: 0.65rem;
  }

  .doc-nav-tabs a {
    padding: 0.4rem 0.7rem;
    font-size: 0.78rem;
  }
}

@media (max-width: 640px) {
  .doc-hero {
    padding-top: 2rem;
    padding-bottom: 1.25rem;
  }

  .doc-layout,
  .doc-layout--wide {
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
  }

  .legal-content h2,
  .kb-content h2,
  .doc-content h2 {
    font-size: 1.3rem;
    align-items: flex-start;
  }

  .legal-callout,
  .kb-callout,
  .doc-callout {
    padding: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .doc-back-top {
    transition: none;
  }
}