/* ============================================================
   brito.ai — App documentation (shared), 2.0
   Self-contained: the editorial light/dark system of the new
   brito.ai (Crimson Pro / JetBrains Mono / Fira Sans). No _ds
   dependency. Used by every app's support / privacy / faq /
   terms / hub pages. Class names unchanged.
   ============================================================ */
@import url("https://fonts.googleapis.com/css2?family=Crimson+Pro:ital,wght@0,300..700;1,300..600&family=Fira+Sans:ital,wght@0,300;0,400;0,500;1,400&family=JetBrains+Mono:wght@300;400;500&display=swap");

:root {
  --font-serif: "Crimson Pro", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --font-sans: "Fira Sans", -apple-system, system-ui, sans-serif;

  --brand-violet: #7c3aed;
  --brand-gradient: linear-gradient(108deg, #6b7bff, #7c3aed, #e5348e, #f97316);

  --bg: #ffffff;
  --bg-soft: #faf9f7;
  --fg: rgba(0, 0, 0, 0.87);
  --fg-muted: rgba(0, 0, 0, 0.56);
  --fg-faint: rgba(0, 0, 0, 0.34);
  --line: rgba(0, 0, 0, 0.12);
  --line-strong: rgba(0, 0, 0, 0.22);
  --card: #ffffff;
  --accent: #111317;
  --on-accent: #ffffff;
  --header-bg: rgba(255, 255, 255, 0.82);
  --shadow: 0 16px 44px rgba(0, 0, 0, 0.10);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}


* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--font-sans); font-size: 16px; line-height: 1.65;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}
a { color: var(--fg); text-decoration: underline; text-underline-offset: 2px; text-decoration-color: var(--line-strong); }
a:hover { text-decoration-color: currentColor; }

/* ---- Site header: the same one as every brito.ai page (copied from /assets/brito.css) ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px) saturate(120%); -webkit-backdrop-filter: blur(14px) saturate(120%);
  background: var(--header-bg); border-bottom: 1px solid var(--line);
}
.header-inner {
  width: min(1080px, 100% - 48px); margin-inline: auto;
  height: 68px; display: flex; align-items: center; justify-content: space-between;
}
.site-header a { text-decoration: none; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--fg); }
.brand-mark { width: 38px; height: 38px; border-radius: 10px; }
.brand-word { font-family: var(--font-mono); font-size: 15px; font-weight: 500; letter-spacing: 0.02em; color: var(--fg); }
.header-actions { display: flex; align-items: center; gap: 18px; }
.header-link {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em; color: var(--fg-muted);
  padding: 6px 2px; border-bottom: 1px solid transparent; transition: color 0.32s var(--ease), border-color 0.32s var(--ease);
}
.header-link:hover, .header-link:focus-visible { color: var(--fg); outline: none; border-bottom-color: var(--line-strong); }
.header-avatar { width: 38px; height: 38px; border-radius: 10px; display: block; object-fit: cover; }
.header-portrait { display: block; border-radius: 10px; line-height: 0; transition: transform 0.32s var(--ease), box-shadow 0.32s var(--ease); }
.header-portrait:hover, .header-portrait:focus-visible { transform: scale(1.06); box-shadow: 0 0 0 2px var(--line-strong); outline: none; }
@media (max-width: 560px) { .header-inner { height: 60px; } .brand-word { display: none; } }

/* ---- Old top bar (no longer used by the pages; kept for reference) ---- */
.doc-topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 12px;
  padding: 13px clamp(18px, 4vw, 40px);
  background: var(--header-bg); backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  border-bottom: 1px solid var(--line);
}
.doc-brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.doc-brand img { width: 28px; height: 28px; display: block; border-radius: 8px; }
.doc-brand .doc-mark { width: 28px; height: 28px; display: block; color: var(--fg); }
.doc-brand .wordmark { font-family: var(--font-mono); font-size: 14px; letter-spacing: 0.02em; color: var(--fg); font-weight: 500; }
.doc-crumbs {
  margin-left: auto; font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-faint);
}
.doc-crumbs a { color: var(--fg-muted); text-decoration: none; }
.doc-crumbs a:hover { color: var(--fg); }
.doc-crumbs span { color: var(--fg-faint); margin: 0 6px; }

/* ---- Layout ---- */
.doc-main { max-width: 760px; margin: 0 auto; padding: clamp(40px, 6vw, 76px) clamp(20px, 5vw, 32px) 96px; }
.eyebrow { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--fg-faint); margin: 0 0 16px; }
h1 { font-family: var(--font-serif); font-weight: 500; letter-spacing: -0.015em; line-height: 1.04;
  font-size: clamp(36px, 6.5vw, 60px); color: var(--fg); margin: 0 0 14px; }
.lede { font-size: 18px; color: var(--fg-muted); margin: 0 0 8px; max-width: 60ch; line-height: 1.55; }
.updated { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-faint); margin: 18px 0 0; }
h2 { font-family: var(--font-serif); font-weight: 500; letter-spacing: -0.01em; line-height: 1.15;
  font-size: clamp(24px, 3.4vw, 30px); color: var(--fg); margin: 56px 0 14px; scroll-margin-top: 80px; }
h3 { font-family: var(--font-serif); font-weight: 600; font-size: 20px; color: var(--fg); margin: 32px 0 8px; }
p { margin: 0 0 16px; }
ul, ol { margin: 0 0 16px; padding-left: 22px; }
li { margin: 0 0 8px; }
strong { color: var(--fg); font-weight: 600; }
hr.rule { height: 1px; background: var(--line); border: 0; margin: 48px 0; }

/* ---- Callout ---- */
.note {
  border: 1px solid var(--line); border-left: 3px solid var(--brand-violet);
  background: var(--bg-soft); border-radius: 12px; padding: 14px 18px; margin: 0 0 20px;
}
.note p:last-child { margin-bottom: 0; }

/* ---- Definition rows ---- */
.deflist { display: grid; grid-template-columns: 1fr; gap: 0; margin: 0 0 16px; }
.deflist .row { display: grid; grid-template-columns: 200px 1fr; gap: 18px; padding: 16px 0; border-top: 1px solid var(--line); }
.deflist .row:last-child { border-bottom: 1px solid var(--line); }
.deflist .term { color: var(--fg); font-weight: 500; }
@media (max-width: 600px) { .deflist .row { grid-template-columns: 1fr; gap: 4px; } }

/* ---- Hub cards ---- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin: 30px 0 8px; }
.card {
  display: block; padding: 22px; border-radius: 16px; background: var(--card);
  border: 1px solid var(--line); text-decoration: none;
  transition: border-color 0.3s var(--ease), transform 0.18s var(--ease), box-shadow 0.3s var(--ease);
}
.card:hover { border-color: var(--line-strong); transform: translateY(-3px); box-shadow: var(--shadow); }
.card .card-title { font-family: var(--font-mono); font-weight: 500; font-size: 15px; color: var(--fg); margin: 0 0 7px; }
.card .card-desc { font-size: 14px; color: var(--fg-muted); margin: 0; line-height: 1.5; }
.card-badge {
  display: inline-block; margin: 0 0 10px; padding: 3px 10px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--fg-muted); background: var(--bg-soft); border: 1px solid var(--line);
}

/* ---- FAQ ---- */
.faq details { border-top: 1px solid var(--line); padding: 6px 0; }
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 16px 0;
  font-family: var(--font-serif); font-weight: 500; font-size: 20px; color: var(--fg);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--fg-faint); font-size: 20px; line-height: 1; transition: transform 0.18s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .answer { padding: 0 0 18px; color: var(--fg-muted); }
.faq .answer p:last-child { margin-bottom: 0; }

/* ---- Buttons / contact ---- */
.btn {
  display: inline-flex; align-items: center; gap: 9px; text-decoration: none;
  font-family: var(--font-mono); font-size: 13px; font-weight: 500; letter-spacing: 0.02em;
  color: var(--on-accent); background: var(--accent);
  padding: 12px 20px; border-radius: 999px; border: 1px solid transparent;
  transition: transform 0.18s var(--ease);
}
.btn:hover { transform: translateY(-1px); text-decoration: none; color: var(--on-accent); }
.btn.secondary { color: var(--fg); background: transparent; border-color: var(--line-strong); }
.btn.secondary:hover { border-color: var(--fg); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0; }

/* ---- Footer ---- */
.doc-footer {
  border-top: 1px solid var(--line); padding: 30px clamp(20px, 5vw, 32px);
  max-width: 760px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center;
}
.doc-footer .legal { font-family: var(--font-mono); font-size: 11px; color: var(--fg-faint); }
.doc-footer nav { margin-left: auto; display: flex; gap: 16px; flex-wrap: wrap; }
.doc-footer nav a {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; color: var(--fg-muted); text-decoration: none;
}
.doc-footer nav a:hover { color: var(--fg); }