/* ═══════════════════════════════════════════════════════════════════
   TECH — Documentation site stylesheet
   Inherits the institutional navy + gold palette and typography
   (Playfair Display / DM Sans / DM Mono) from the landing page.
   ═══════════════════════════════════════════════════════════════════ */

:root {
  --navy: #080f1e;
  --navy-2: #0d1a2e;
  --navy-3: #112240;
  --navy-4: #1a3356;
  --gold: #c9a84c;
  --gold-light: #e8c97a;
  --cyan: #4db8c8;
  --cyan-faint: rgba(77,184,200,0.08);
  --white: #f5f7fa;
  --muted: #8a96a8;
  --muted-strong: #b4beca;
  --border: rgba(201,168,76,0.15);
  --border-subtle: rgba(255,255,255,0.06);
  --border-strong: rgba(201,168,76,0.3);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--navy);
  color: var(--white);
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0;
}

a { color: var(--gold); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--gold-light); }

/* ─── Top nav (shared across docs) ──────────────────────────────── */
.docs-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 4%;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
  background: rgba(8,15,30,0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.docs-nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 20px; font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
  display: flex; align-items: center; gap: 10px;
}
.docs-nav-logo-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--gold); box-shadow: 0 0 8px var(--gold);
}
.docs-nav-logo-sub {
  font-family: 'DM Mono', monospace;
  font-size: 11px; font-weight: 400;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted);
  border-left: 1px solid var(--border);
  padding-left: 10px; margin-left: 4px;
}

.docs-nav-right { display: flex; align-items: center; gap: 24px; }

.docs-nav-link {
  color: var(--muted) !important;
  font-size: 13px; font-weight: 500; letter-spacing: 0.06em;
  text-transform: uppercase;
}
.docs-nav-link:hover { color: var(--white) !important; }

.docs-nav-cta {
  padding: 8px 20px;
  border: 1px solid var(--gold);
  color: var(--gold) !important;
  border-radius: 2px;
  font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase;
  transition: background 0.2s, color 0.2s !important;
}
.docs-nav-cta:hover { background: var(--gold); color: var(--navy) !important; }

/* ─── Layout ────────────────────────────────────────────────────── */
.docs-shell {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 280px 1fr;
  max-width: 1400px;
  margin: 0 auto;
  padding-top: 60px;
  min-height: 100vh;
}

.docs-sidebar {
  position: sticky; top: 60px;
  align-self: start;
  max-height: calc(100vh - 60px);
  overflow-y: auto;
  padding: 48px 0 48px 4%;
  border-right: 1px solid var(--border-subtle);
}

.docs-sidebar-group { margin-bottom: 32px; }

.docs-sidebar-group-title {
  font-family: 'DM Mono', monospace;
  font-size: 10px; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px;
}
.docs-sidebar-group-title::before {
  content: ''; width: 14px; height: 1px; background: var(--gold);
}

.docs-sidebar-link {
  display: block;
  padding: 7px 12px;
  margin: 0 8px;
  font-size: 13.5px; font-weight: 400;
  color: var(--muted-strong) !important;
  border-radius: 2px;
  border-left: 2px solid transparent;
  transition: all 0.15s;
}
.docs-sidebar-link:hover {
  color: var(--white) !important;
  background: rgba(255,255,255,0.03);
  border-left-color: var(--border);
}
.docs-sidebar-link.active {
  color: var(--white) !important;
  background: rgba(201,168,76,0.06);
  border-left-color: var(--gold);
  font-weight: 500;
}

.docs-content {
  padding: 56px 6% 120px;
  max-width: 820px;
}

/* ─── Content elements ──────────────────────────────────────────── */
.docs-breadcrumb {
  font-family: 'DM Mono', monospace;
  font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 24px;
  display: flex; align-items: center; gap: 8px;
}
.docs-breadcrumb a { color: var(--muted) !important; }
.docs-breadcrumb a:hover { color: var(--gold) !important; }
.docs-breadcrumb-sep { color: var(--border); }

.docs-eyebrow {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 18px;
}
.docs-eyebrow-line { width: 30px; height: 1px; background: var(--gold); }
.docs-eyebrow-text {
  font-family: 'DM Mono', monospace;
  font-size: 11px; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold);
}

.docs-h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(36px, 4.2vw, 52px);
  font-weight: 900;
  line-height: 1.12; letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 20px;
}
.docs-h1 em { font-style: normal; color: var(--gold); }

.docs-lede {
  font-size: 19px; font-weight: 300;
  line-height: 1.65; color: var(--muted-strong);
  margin-bottom: 48px; max-width: 720px;
}

.docs-h2 {
  font-family: 'Playfair Display', serif;
  font-size: 28px; font-weight: 700;
  color: var(--white);
  margin: 56px 0 18px;
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
  letter-spacing: -0.01em;
}
.docs-h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }

.docs-h3 {
  font-family: 'Playfair Display', serif;
  font-size: 20px; font-weight: 700;
  color: var(--white);
  margin: 32px 0 10px;
}

.docs-content p {
  color: var(--muted-strong);
  margin-bottom: 18px;
  font-size: 16px; line-height: 1.75;
}

.docs-content strong { color: var(--white); font-weight: 500; }
.docs-content em { color: var(--gold); font-style: normal; font-weight: 500; }

.docs-content ul, .docs-content ol {
  margin: 0 0 24px 8px;
  padding-left: 22px;
  color: var(--muted-strong);
}
.docs-content li { margin-bottom: 10px; line-height: 1.7; }
.docs-content li::marker { color: var(--gold); }

code, .docs-mono {
  font-family: 'DM Mono', monospace;
  font-size: 0.88em;
  background: rgba(201,168,76,0.08);
  color: var(--gold-light);
  padding: 2px 7px; border-radius: 2px;
  border: 1px solid var(--border);
}

pre {
  background: var(--navy-2);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 20px 22px;
  overflow-x: auto;
  margin: 24px 0;
  line-height: 1.55;
}
pre code {
  background: transparent; border: none; padding: 0;
  font-size: 13px; color: var(--muted-strong);
}

/* ─── Callouts ─────────────────────────────────────────────────── */
.docs-callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-left-color: var(--gold);
  border-radius: 3px;
  padding: 18px 22px;
  margin: 24px 0;
}
.docs-callout-icon {
  font-family: 'DM Mono', monospace;
  font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  padding-top: 2px;
}
.docs-callout-body { color: var(--muted-strong); font-size: 14.5px; line-height: 1.65; }
.docs-callout-body strong { color: var(--white); }
.docs-callout.compliance { border-left-color: var(--cyan); }
.docs-callout.compliance .docs-callout-icon { color: var(--cyan); }

/* ─── Layered card (for technical breakdowns) ─────────────────── */
.docs-layer {
  background: rgba(17,34,64,0.3);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 22px 26px;
  margin: 14px 0;
}
.docs-layer-label {
  font-family: 'DM Mono', monospace;
  font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
  display: flex; align-items: center; gap: 10px;
}
.docs-layer-label-num {
  background: var(--gold); color: var(--navy);
  width: 22px; height: 22px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: 'Playfair Display', serif;
  font-size: 13px; font-weight: 700;
  letter-spacing: 0;
}
.docs-layer-title {
  font-family: 'Playfair Display', serif;
  font-size: 18px; font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.docs-layer p { margin-bottom: 0; font-size: 14.5px; }

/* ─── Key-value table (for specs) ─────────────────────────────── */
.docs-spec {
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  margin: 24px 0;
  overflow: hidden;
}
.docs-spec-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  border-bottom: 1px solid var(--border-subtle);
}
.docs-spec-row:last-child { border-bottom: none; }
.docs-spec-row:nth-child(even) { background: rgba(255,255,255,0.02); }
.docs-spec-k {
  font-family: 'DM Mono', monospace;
  font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  padding: 12px 18px;
  border-right: 1px solid var(--border-subtle);
}
.docs-spec-v {
  padding: 12px 18px;
  color: var(--muted-strong);
  font-size: 14.5px;
}

/* ─── Closing CTA ─────────────────────────────────────────────── */
.docs-cta-box {
  margin-top: 72px;
  padding: 32px 36px;
  background: linear-gradient(135deg, rgba(201,168,76,0.08), rgba(77,184,200,0.04));
  border: 1px solid var(--border);
  border-radius: 4px;
}
.docs-cta-box-label {
  font-family: 'DM Mono', monospace;
  font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}
.docs-cta-box h3 {
  font-family: 'Playfair Display', serif;
  font-size: 24px; font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.docs-cta-box p {
  color: var(--muted-strong); margin-bottom: 22px; font-size: 15px;
}
.docs-cta-btn {
  display: inline-block;
  padding: 12px 30px;
  background: var(--gold);
  color: var(--navy) !important;
  font-weight: 500; font-size: 13px;
  letter-spacing: 0.06em; text-transform: uppercase;
  border-radius: 2px;
  transition: background 0.2s, transform 0.15s;
}
.docs-cta-btn:hover {
  background: var(--gold-light); transform: translateY(-1px);
  color: var(--navy) !important;
}

/* ─── Hub (docs/index.html) specific ─────────────────────────── */
.docs-hub-hero {
  padding: 48px 0 64px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 56px;
}
.docs-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.docs-hub-pillar {
  background: rgba(17,34,64,0.3);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 26px 28px;
  transition: border-color 0.2s, transform 0.15s;
  text-decoration: none; color: inherit !important;
  display: block;
}
.docs-hub-pillar:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  color: inherit !important;
}
.docs-hub-pillar-label {
  font-family: 'DM Mono', monospace;
  font-size: 10px; letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}
.docs-hub-pillar-title {
  font-family: 'Playfair Display', serif;
  font-size: 22px; font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.docs-hub-pillar-desc {
  font-size: 14px; color: var(--muted);
  line-height: 1.6;
  margin-bottom: 16px;
}
.docs-hub-pillar-links {
  list-style: none; padding: 0;
  border-top: 1px solid var(--border-subtle); padding-top: 14px;
}
.docs-hub-pillar-links li {
  font-size: 13.5px; padding: 3px 0;
}
.docs-hub-pillar-links a { color: var(--muted-strong) !important; }
.docs-hub-pillar-links a:hover { color: var(--gold) !important; }

/* ─── Mobile ──────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .docs-shell { grid-template-columns: 1fr; }
  .docs-sidebar {
    position: static; max-height: none;
    border-right: none; border-bottom: 1px solid var(--border-subtle);
    padding: 28px 6% 32px;
  }
  .docs-content { padding: 40px 6% 80px; }
  .docs-nav-logo-sub { display: none; }
  .docs-spec-row { grid-template-columns: 1fr; }
  .docs-spec-k { border-right: none; border-bottom: 1px solid var(--border-subtle); }
}