/*
 * docs.css — Long-form article / documentation pages
 * Use with fistbump.css + style.css (for header/footer)
 */

.doc-shell { padding: 72px 0 48px; }
.doc-shell .container { max-width: 1080px; }

.doc-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 64px;
  align-items: start;
}

/* ── Breadcrumbs ── */
.breadcrumbs {
  font-size: var(--fb-text-sm);
  color: var(--fb-text-dim);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.breadcrumbs a { color: var(--fb-text-muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--fb-text); }
.breadcrumbs .sep { color: var(--fb-text-dim); opacity: 0.5; }
.breadcrumbs .current { color: var(--fb-text); }

/* ── Sticky TOC ── */
.toc {
  position: sticky;
  top: 88px;
  align-self: start;
  font-size: var(--fb-text-sm);
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}
.toc-label {
  font-size: var(--fb-text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fb-text-dim);
  margin-bottom: 14px;
  padding-left: 14px;
}
.toc ul { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 0; }
.toc a {
  display: block;
  padding: 6px 14px;
  color: var(--fb-text-muted);
  text-decoration: none;
  border-left: 2px solid var(--fb-border);
  line-height: 1.5;
  transition: color 0.15s, border-color 0.15s;
}
.toc a:hover { color: var(--fb-text); border-left-color: var(--fb-border-light); text-decoration: none; }
.toc a.active { color: var(--fb-accent); border-left-color: var(--fb-accent); }
.toc ul ul a { padding-left: 28px; font-size: 12px; }

/* ── Article ── */
.doc-article { min-width: 0; max-width: 720px; }

.doc-eyebrow {
  display: inline-block;
  font-size: var(--fb-text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fb-accent);
  border: 1px solid var(--fb-accent-dim);
  border-radius: var(--fb-radius-pill);
  padding: 4px 14px;
  margin-bottom: 20px;
}

.doc-article h1 {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 18px;
  background: linear-gradient(135deg, #fafafa 0%, #fafafa 60%, #57c7ed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.doc-lead {
  font-size: 19px;
  line-height: 1.6;
  color: var(--fb-text-muted);
  margin-bottom: 40px;
  max-width: 640px;
}

.doc-article h2 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 56px 0 16px;
  scroll-margin-top: 80px;
  color: var(--fb-text);
  position: relative;
}

.doc-article h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 36px 0 12px;
  scroll-margin-top: 80px;
  color: var(--fb-text);
}

.doc-article h2 .anchor,
.doc-article h3 .anchor {
  opacity: 0;
  margin-left: 10px;
  color: var(--fb-accent);
  font-weight: 400;
  text-decoration: none;
  transition: opacity 0.15s;
  font-size: 0.7em;
}
.doc-article h2:hover .anchor,
.doc-article h3:hover .anchor { opacity: 1; }

.doc-article p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--fb-text-muted);
  margin-bottom: 18px;
}
.doc-article p strong { color: var(--fb-text); font-weight: 600; }
.doc-article a:not(.btn):not(.next-card) { color: var(--fb-accent); }
.doc-article a:not(.btn):not(.next-card):hover { text-decoration: underline; }

.doc-article ul, .doc-article ol {
  margin: 0 0 20px 22px;
  padding: 0;
  color: var(--fb-text-muted);
}
.doc-article li {
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: 8px;
}
.doc-article li strong { color: var(--fb-text); }

.doc-article pre {
  margin: 20px 0;
  font-size: 13px;
  line-height: 1.65;
}
.doc-article code {
  font-size: 13px;
}

/* ── Comparison table ── */
.compare-table {
  width: 100%;
  margin: 28px 0;
  border: 1px solid var(--fb-border);
  border-radius: var(--fb-radius-lg);
  overflow: hidden;
  background: rgba(24, 24, 27, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.compare-table table { border-collapse: separate; border-spacing: 0; }
.compare-table th {
  text-align: left;
  padding: 14px 20px;
  font-size: 12px;
  font-weight: 700;
  color: var(--fb-text);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(87, 199, 237, 0.06);
  border-bottom: 1px solid var(--fb-border);
}
.compare-table th:first-child { color: var(--fb-text-dim); }
.compare-table th.fb-col { color: var(--fb-accent); }
.compare-table td {
  padding: 12px 20px;
  font-size: 14px;
  color: var(--fb-text-muted);
  border-bottom: 1px solid var(--fb-border);
  line-height: 1.55;
  vertical-align: top;
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table td:first-child { color: var(--fb-text); font-weight: 500; }
.compare-table td.fb-col { color: var(--fb-text); }

/* Win/loss indicators */
.win { color: var(--fb-green); font-weight: 600; }
.loss { color: var(--fb-red); font-weight: 600; }
.neutral { color: var(--fb-text-muted); }

/* ── Callouts ── */
.callout {
  padding: 16px 20px;
  border-radius: var(--fb-radius);
  margin: 24px 0;
  border: 1px solid var(--fb-border);
  background: var(--fb-bg-card);
}
.callout.accent { border-color: var(--fb-accent-dim); background: var(--fb-accent-bg); }
.callout.warn { border-color: rgba(251, 191, 36, 0.25); background: var(--fb-yellow-bg); }
.callout-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fb-accent);
  margin-bottom: 6px;
}
.callout p { margin-bottom: 0 !important; font-size: 15px !important; }
.callout p + p { margin-top: 10px; }

/* ── FAQ ── */
.faq-list { margin: 32px 0; }
.faq-item {
  border-top: 1px solid var(--fb-border);
  padding: 24px 0;
}
.faq-item:first-child { border-top: none; padding-top: 0; }
.faq-item h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--fb-text);
  scroll-margin-top: 80px;
}
.faq-item p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--fb-text-muted);
  margin-bottom: 10px;
}
.faq-item p:last-child { margin-bottom: 0; }

/* ── Glossary ── */
.glossary-index {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 32px;
  padding: 14px 16px;
  background: rgba(24, 24, 27, 0.6);
  border: 1px solid var(--fb-border);
  border-radius: var(--fb-radius-lg);
}
.glossary-index a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--fb-radius-sm);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--fb-text-muted);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.glossary-index a:hover { background: var(--fb-bg-hover); color: var(--fb-text); text-decoration: none; }
.glossary-index a.disabled { opacity: 0.25; pointer-events: none; }

.glossary-group { margin-bottom: 40px; }
.glossary-letter {
  font-size: 32px;
  font-weight: 700;
  color: var(--fb-accent);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.glossary-term {
  padding: 20px 0;
  border-top: 1px solid var(--fb-border);
}
.glossary-term:first-of-type { border-top: none; }
.glossary-term dt {
  font-size: 17px;
  font-weight: 600;
  color: var(--fb-text);
  margin-bottom: 8px;
  scroll-margin-top: 80px;
}
.glossary-term dd {
  font-size: 15px;
  line-height: 1.7;
  color: var(--fb-text-muted);
  margin: 0;
}

/* ── Next steps / CTA cards ── */
.next-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 48px;
}
.next-card {
  display: block;
  padding: 18px 22px;
  background: rgba(24, 24, 27, 0.6);
  border: 1px solid var(--fb-border);
  border-radius: var(--fb-radius-lg);
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}
.next-card:hover { border-color: var(--fb-accent-dim); background: var(--fb-bg-hover); text-decoration: none; }
.next-card-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fb-text-dim);
  margin-bottom: 4px;
}
.next-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--fb-text);
  margin-bottom: 2px;
}
.next-card-desc {
  font-size: 13px;
  color: var(--fb-text-muted);
  line-height: 1.5;
}

/* ── Prose text (for whitepaper-style content) ── */
.prose p code { white-space: nowrap; }
.prose pre { background: #0b0b0e; }
.prose hr { border: none; border-top: 1px solid var(--fb-border); margin: 40px 0; }

/* ── Releases list ── */
.release {
  padding: 28px 0;
  border-bottom: 1px solid var(--fb-border);
}
.release:last-child { border-bottom: none; }
.release-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--fb-text-dim);
  margin-bottom: 8px;
}
.release-tag {
  display: inline-block;
  padding: 3px 10px;
  font-family: var(--fb-font-mono);
  font-size: 12px;
  color: var(--fb-accent);
  background: var(--fb-accent-bg);
  border: 1px solid var(--fb-accent-dim);
  border-radius: var(--fb-radius-pill);
}
.release h3 { font-size: 20px; margin: 0 0 8px; }
.release p { font-size: 15px; color: var(--fb-text-muted); margin: 0 0 12px; line-height: 1.65; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .doc-layout { grid-template-columns: 1fr; gap: 24px; }
  .toc { display: none; }
  .doc-article h1 { font-size: 32px; }
  .doc-lead { font-size: 17px; }
  .doc-article h2 { font-size: 22px; margin-top: 40px; }
  .doc-article h3 { font-size: 17px; }
  .compare-table { font-size: 13px; overflow-x: auto; }
  .compare-table table { min-width: 520px; }
  .next-steps { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .doc-shell { padding: 48px 0 32px; }
  .doc-article h1 { font-size: 28px; }
  .doc-article { padding: 0; }
}