/* ============================================================
   Brisk Docs — guides layer on top of the landing page's Aurora
   system (styles.css loads first; this only adds doc-specific
   layout: hero, flow diagram rows, steps, code blocks, callouts,
   FAQ accordion). No new palette, no new fonts.
   ============================================================ */

/* ---------- hero ---------- */
.doc-hero { padding: 72px 0 64px; }
.doc-hero-inner { max-width: 820px; }
.doc-title { font-size: clamp(34px, 4.6vw, 56px); font-weight: 800; line-height: 1.05; letter-spacing: -0.03em; margin: 4px 0 20px; }
.doc-sub { color: var(--subtext); font-size: 18px; max-width: 46rem; }
.doc-cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }

.btn-ghost {
  background: var(--glass); color: var(--text);
  border: 1px solid var(--glass-border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- sections ---------- */
.doc-section { border-top: 1px solid var(--border); }
.doc-subhead { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; margin: 40px 0 14px; }
.doc-subhead + .doc-code { margin-top: 0; }
.doc-fine { color: var(--faint); font-size: 13.5px; margin-top: 14px; }

/* ---------- flow diagram (row variant) ---------- */
.doc-flow { max-width: 980px; margin: 0 auto; padding: 30px; border-radius: var(--radius-lg); }
.doc-flow .diagram { gap: 10px; }
.diagram-row { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 10px; align-items: stretch; }
.diagram-row .diagram-node { justify-self: stretch; }
.diagram-row .diagram-arrow { align-self: center; }

/* ---------- three-up cards ---------- */
.doc-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.doc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.doc-cols .card p code { font-size: 0.8em; }

/* ---------- numbered steps ---------- */
.doc-steps { display: flex; flex-direction: column; gap: 22px; max-width: 860px; margin: 0 auto; }
.doc-step { padding: 28px 30px; border-radius: var(--radius); }
.doc-step-head { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.doc-step-num {
  display: inline-grid; place-items: center; width: 34px; height: 34px; flex: 0 0 34px;
  border-radius: 11px; font-family: var(--mono); font-size: 13px; font-weight: 600;
  background: rgba(0, 229, 160, 0.14); color: var(--accent);
}
.doc-step-head h3 { font-size: 19px; font-weight: 700; letter-spacing: -0.01em; }
.doc-step p { color: var(--subtext); font-size: 15px; margin-top: 10px; }
.doc-step p:first-of-type { margin-top: 0; }

/* ---------- code blocks ---------- */
.doc-code {
  margin: 14px 0 6px; padding: 18px 20px; border-radius: 14px;
  background: var(--bg0); border: 1px solid var(--border);
  overflow-x: auto; box-shadow: var(--hairline);
}
.doc-code code {
  display: block; white-space: pre; background: none; padding: 0;
  font-family: var(--mono); font-size: 13px; line-height: 1.65; color: #C7D5E3;
}
.doc-code code .hl-key { color: var(--accent); }
.doc-code code .hl-str { color: #9FE8D8; }

/* ---------- callout ---------- */
.doc-callout {
  margin: 28px auto 0; max-width: 860px; padding: 18px 22px; border-radius: 14px;
  border: 1px solid rgba(0, 229, 160, 0.28); background: rgba(0, 229, 160, 0.05);
  color: var(--subtext); font-size: 14.5px;
}
.doc-callout strong { color: var(--text); }
.doc-callout code { font-size: 0.85em; }

/* ---------- agentic band ---------- */
.doc-agentic { background: linear-gradient(180deg, rgba(13, 19, 31, 0.55), transparent); }

/* ---------- FAQ ---------- */
.doc-faq { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.doc-faq details {
  padding: 18px 22px; border-radius: 16px;
  background: var(--bg1); border: 1px solid var(--border);
  transition: border-color 0.25s;
}
.doc-faq details[open] { border-color: rgba(0, 229, 160, 0.3); }
.doc-faq summary {
  cursor: pointer; font-weight: 700; font-size: 16px; list-style: none;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.doc-faq summary::-webkit-details-marker { display: none; }
.doc-faq summary::after {
  content: "+"; font-family: var(--mono); color: var(--accent); font-size: 18px;
  transition: transform 0.2s var(--ease);
}
.doc-faq details[open] summary::after { transform: rotate(45deg); }
.doc-faq details p { color: var(--subtext); font-size: 15px; margin-top: 12px; }
.doc-faq details p code { font-size: 0.85em; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .doc-cols { grid-template-columns: 1fr; }
  .diagram-row { grid-template-columns: 1fr; }
  .diagram-row .diagram-arrow { transform: rotate(90deg); }
}

@media (max-width: 720px) {
  .doc-hero { padding: 48px 0 40px; }
  .doc-title { font-size: 32px; }
  .doc-step { padding: 22px 20px; }
  .doc-code { padding: 14px 16px; }
  .doc-code code { font-size: 12px; }
}