/* guides-insight.css
   Restyles the guide-body components (the zg-* vocabulary from the source
   library) into the /insights dark theme so re-flowed guide pages read as one
   design system with the compiled Next.js insights articles. The compiled
   bundle (_next/static/css/*) supplies the base tokens + .prose-insight
   typography + the shared header/footer. This file only dresses the components
   .prose-insight doesn't know about: tables, cards, stages, callouts, TOC,
   related grid, FAQ, checklist, badges, and the article hero/section images.
   Palette: --ink #0f1923 · --canvas #f8f7f4 · --teal #00c4a1 ·
            --deep-teal #008f7a · --slate #8a97a6 · --slate-on-dark #cbd5e1 */

:root {
  --gd-ink: #0f1923;
  --gd-ink-2: #131f2b;      /* raised surface */
  --gd-ink-3: #182532;      /* card surface */
  --gd-line: rgba(203, 213, 225, 0.12);
  --gd-line-strong: rgba(203, 213, 225, 0.22);
  --gd-canvas: #f8f7f4;
  --gd-slate: #8a97a6;
  --gd-slate-2: #cbd5e1;
  --gd-teal: #00c4a1;
  --gd-deep-teal: #008f7a;
  --gd-amber: #f2a623;
}

/* ── Section rhythm ─────────────────────────────────────────────────────── */
.gd-body .zg-section { margin: 0 0 40px; }
.gd-body .zg-section > h2:first-child,
.gd-body h2 {
  font-family: "Josefin Sans", sans-serif;
  font-weight: 500;
  font-size: clamp(23px, 2.6vw, 30px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: #fff;
  margin: 48px 0 18px;
  padding-top: 6px;
}
.gd-body h3 {
  font-family: "Josefin Sans", sans-serif;
  font-weight: 500;
  font-size: 19px;
  color: var(--gd-canvas);
  margin: 30px 0 12px;
}
.gd-body p { color: var(--gd-slate-2); line-height: 1.8; margin: 0 0 18px; }
.gd-body a { color: var(--gd-teal); text-decoration: none; border-bottom: 1px solid rgba(0, 196, 161, 0.35); }
.gd-body a:hover { border-bottom-color: var(--gd-teal); }
.gd-body strong { color: #fff; font-weight: 600; }
.gd-body ul, .gd-body ol { color: var(--gd-slate-2); line-height: 1.8; margin: 0 0 18px; padding-left: 22px; }
.gd-body li { margin: 0 0 8px; }
.gd-body blockquote {
  margin: 24px 0; padding: 4px 0 4px 22px;
  border-left: 2px solid var(--gd-teal);
  color: var(--gd-canvas); font-style: italic;
}
.gd-body hr { border: 0; border-top: 1px solid var(--gd-line); margin: 40px 0; }

/* ── Badges / pills ─────────────────────────────────────────────────────── */
.gd-body .zg-badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gd-teal);
  border: 1px solid rgba(0, 196, 161, 0.25);
  background: rgba(0, 196, 161, 0.07);
  border-radius: 999px; padding: 5px 12px; margin: 0 0 10px;
}
.gd-body .dot { color: var(--gd-slate); padding: 0 4px; }

/* ── Tables ─────────────────────────────────────────────────────────────── */
.gd-body .zg-table-wrap { overflow-x: auto; margin: 24px 0 28px; border: 1px solid var(--gd-line); border-radius: 12px; }
.gd-body table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px; }
.gd-body thead th {
  background: var(--gd-ink-3);
  color: #fff; font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.05em; text-transform: uppercase;
  text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--gd-line-strong);
}
.gd-body tbody td { padding: 12px 16px; border-bottom: 1px solid var(--gd-line); color: var(--gd-slate-2); vertical-align: top; }
.gd-body tbody tr:last-child td { border-bottom: 0; }
.gd-body tbody tr:nth-child(2n) td { background: rgba(255, 255, 255, 0.015); }

/* ── Cards + callouts ───────────────────────────────────────────────────── */
.gd-body .zg-card,
.gd-body .zg-callout {
  background: var(--gd-ink-2);
  border: 1px solid var(--gd-line);
  border-radius: 14px; padding: 22px 24px; margin: 24px 0;
}
.gd-body .zg-callout {
  border-left: 3px solid var(--gd-teal);
  background: linear-gradient(180deg, rgba(0, 196, 161, 0.06), rgba(0, 196, 161, 0.02));
}
.gd-body .zg-card h3, .gd-body .zg-callout h3, .gd-body .zg-card h4, .gd-body .zg-callout h4 { margin-top: 0; }

/* ── Maturity-model stages ──────────────────────────────────────────────── */
.gd-body .zg-stages { display: grid; gap: 12px; margin: 24px 0; }
.gd-body .zg-stage {
  position: relative;
  background: var(--gd-ink-2);
  border: 1px solid var(--gd-line);
  border-radius: 12px; padding: 16px 18px 16px 20px;
}
.gd-body .zg-stage::before {
  content: ""; position: absolute; left: 0; top: 14px; bottom: 14px; width: 3px;
  border-radius: 3px; background: linear-gradient(var(--gd-teal), var(--gd-deep-teal));
}
.gd-body .zg-stage .t { display: block; color: #fff; font-weight: 600; font-family: "Josefin Sans", sans-serif; margin-bottom: 4px; }
.gd-body .zg-stage .n { display: block; color: var(--gd-slate); font-size: 13px; }

/* ── Table of contents ("On this page") ─────────────────────────────────── */
.gd-body .zg-toc {
  background: var(--gd-ink-2); border: 1px solid var(--gd-line);
  border-radius: 14px; padding: 22px 26px; margin: 0 0 40px;
  column-count: 2; column-gap: 40px;
}
@media (max-width: 640px) { .gd-body .zg-toc { column-count: 1; } }
/* The heading (strong or h2/h3) spans both columns. */
.gd-body .zg-toc > strong,
.gd-body .zg-toc h2, .gd-body .zg-toc h3 {
  display: block; column-span: all;
  font-size: 11px !important; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--gd-slate);
  margin: 0 0 14px; padding: 0; font-family: "IBM Plex Mono", monospace;
}
/* These TOCs list bare <a> tags (no <ul>) — give each its own line + marker. */
.gd-body .zg-toc a {
  display: block; break-inside: avoid; position: relative;
  padding: 7px 0 7px 20px; border: 0; line-height: 1.35;
  color: var(--gd-slate-2); font-size: 14px;
  border-bottom: 1px solid rgba(203, 213, 225, 0.06);
}
.gd-body .zg-toc a:last-child { border-bottom: 0; }
.gd-body .zg-toc a::before {
  content: "›"; position: absolute; left: 2px; top: 7px;
  color: var(--gd-teal); font-weight: 600;
}
.gd-body .zg-toc a:hover { color: #fff; }
/* If a guide's TOC does use <ul>/<li>, keep it tidy too. */
.gd-body .zg-toc ul, .gd-body .zg-toc ol { margin: 0; padding-left: 18px; list-style: none; }
.gd-body .zg-toc li { break-inside: avoid; }

/* ── Checklist ──────────────────────────────────────────────────────────── */
.gd-body .zg-checklist { list-style: none; padding-left: 0; }
.gd-body .zg-checklist li { position: relative; padding-left: 30px; margin-bottom: 12px; }
.gd-body .zg-checklist li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  width: 20px; height: 20px; border-radius: 6px;
  background: rgba(0, 196, 161, 0.12); color: var(--gd-teal);
  display: flex; align-items: center; justify-content: center; font-size: 12px;
}

/* ── FAQ ────────────────────────────────────────────────────────────────── */
.gd-body .zg-faq { margin: 32px 0; }
.gd-body .zg-faq details {
  border: 1px solid var(--gd-line); border-radius: 12px;
  padding: 4px 20px; margin-bottom: 12px; background: var(--gd-ink-2);
}
.gd-body .zg-faq summary {
  cursor: pointer; padding: 14px 0; color: #fff; font-weight: 500;
  font-family: "Josefin Sans", sans-serif; list-style: none;
}
.gd-body .zg-faq summary::-webkit-details-marker { display: none; }
.gd-body .zg-faq summary::after { content: "+"; float: right; color: var(--gd-teal); font-size: 20px; line-height: 1; }
.gd-body .zg-faq details[open] summary::after { content: "–"; }
.gd-body .zg-faq details > *:not(summary) { padding-bottom: 14px; }
/* Guides authored without <details> (plain h3/p pairs) still read fine. */

/* ── Related guides grid ────────────────────────────────────────────────── */
.gd-related-wrap { margin: 56px 0 8px; padding-top: 36px; border-top: 1px solid var(--gd-line); }
.gd-related-wrap h2, .gd-body .zg-related h2, .gd-body .zg-related h3 {
  font-size: 12px !important; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gd-slate); font-family: "IBM Plex Mono", monospace; margin: 0 0 18px;
}
.gd-body .zg-related ul { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.gd-body .zg-related li { margin: 0; }
.gd-body .zg-related a {
  display: block; padding: 16px 18px; border: 1px solid var(--gd-line);
  border-radius: 12px; background: var(--gd-ink-2); color: var(--gd-canvas);
  border-bottom: 1px solid var(--gd-line); transition: border-color .2s, transform .2s;
}
.gd-body .zg-related a:hover { border-color: rgba(0, 196, 161, 0.5); transform: translateY(-2px); }

/* ── End CTA ────────────────────────────────────────────────────────────── */
.gd-body .zg-endcta {
  margin: 48px 0 8px; padding: 32px; text-align: center;
  border: 1px solid rgba(0, 196, 161, 0.25); border-radius: 18px;
  background: radial-gradient(120% 140% at 50% 0%, rgba(0, 196, 161, 0.10), rgba(0, 196, 161, 0.02) 60%);
}
.gd-body .zg-endcta h2, .gd-body .zg-endcta h3 { margin-top: 0; }
.gd-body .zg-endcta .btn,
.gd-body a.btn {
  display: inline-block; margin-top: 10px; padding: 13px 26px;
  background: var(--gd-teal); color: #06231d !important; font-weight: 600;
  border-radius: 999px; border: 0; text-decoration: none;
}
.gd-body a.btn:hover { background: #23d6b6; }

/* ── Article hero + section images ──────────────────────────────────────── */
.gd-hero-fig { margin: 34px 0 0; }
.gd-hero-fig img, .gd-fig img {
  width: 100%; height: auto; display: block; border-radius: 16px;
  border: 1px solid var(--gd-line);
}
.gd-fig { margin: 30px 0; }
.gd-fig figcaption, .gd-hero-fig figcaption {
  margin-top: 10px; font-family: "IBM Plex Mono", monospace;
  font-size: 11px; color: var(--gd-slate); text-align: center;
}

/* ── Cluster grid (master index + hubs) ─────────────────────────────────── */
.gd-body .zg-cluster-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px; margin: 28px 0; padding: 0; list-style: none;
}
.gd-body .zg-cluster-card {
  position: relative; background: var(--gd-ink-2);
  border: 1px solid var(--gd-line); border-radius: 16px; padding: 24px 24px 20px;
  transition: border-color .2s, transform .2s;
}
.gd-body .zg-cluster-card:hover { border-color: rgba(0, 196, 161, 0.45); transform: translateY(-3px); }
.gd-body .zg-cluster-card h2, .gd-body .zg-cluster-card h3 { margin: 6px 0 8px; font-size: 20px; }
.gd-body .zg-cluster-card h2 a, .gd-body .zg-cluster-card h3 a { color: #fff; border: 0; }
.gd-body .zg-cluster-card p { font-size: 14px; margin-bottom: 12px; }
.gd-body .zg-cluster-card ul { padding-left: 18px; font-size: 13.5px; margin: 0; }
.gd-body .zg-tag {
  display: inline-block; font-family: "IBM Plex Mono", monospace;
  font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--gd-teal); background: rgba(0, 196, 161, 0.08);
  border: 1px solid rgba(0, 196, 161, 0.2); border-radius: 999px; padding: 3px 10px;
}

/* Anchor offset so in-page TOC links aren't hidden under the fixed nav. */
.gd-body h2[id], .gd-body h3[id] { scroll-margin-top: 96px; }