:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface-2: #222535;
  --elevated: #2c3044;
  --border: #353a50;
  --border-subtle: #2a2f44;
  --text: #e8eaf0;
  --text-2: #9399b2;
  --muted: #5c6280;
  --accent: #5b8af0;
  --accent-hover: #4a77e0;
  --accent-muted: rgba(91, 138, 240, 0.15);
  --success: #4caf82;
  --warning: #f0b429;
  --error: #e05c5c;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --maxw: 1320px;
  --header-h: 60px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
img { max-width: 100%; height: auto; }

/* ---------- Header ---------- */
.docHeader {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  display: flex; align-items: center; gap: 16px;
  padding: 0 24px;
  background: rgba(26, 29, 39, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}
.docHeader__brandWrap { display: flex; align-items: center; gap: 8px; }
.docHeader__brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); }
.docHeader__brand:hover { text-decoration: none; }
.docHeader__logo { width: 30px; height: 30px; border-radius: 8px; }
.docHeader__badge {
  font-size: 12px; font-weight: 600; color: var(--text-2);
  border: 1px solid var(--border); border-radius: 999px; padding: 2px 10px;
}
.docHeader__spacer { flex: 1; }
.docHeader__link { color: var(--text-2); font-weight: 500; font-size: 14px; }
.docHeader__cta {
  margin-left: auto;
  background: var(--accent); color: #fff; font-weight: 600; font-size: 14px;
  padding: 8px 16px; border-radius: 8px;
}
.docHeader__cta:hover { background: var(--accent-hover); text-decoration: none; color: #fff; }

/* ---------- Layout ---------- */
.docLayout {
  display: flex; gap: 40px;
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  align-items: flex-start;
}
.docSidebar {
  position: sticky; top: var(--header-h);
  width: 240px; flex: 0 0 240px;
  max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  padding: 28px 0 48px;
  scrollbar-width: none; /* Firefox: hide scrollbar, keep scrolling */
  -ms-overflow-style: none; /* old Edge */
}
.docSidebar::-webkit-scrollbar { width: 0; height: 0; display: none; } /* Chrome/Safari */
.docMain { flex: 1 1 auto; min-width: 0; padding: 28px 0 64px; max-width: 800px; }
.docToc {
  position: sticky; top: var(--header-h);
  width: 200px; flex: 0 0 200px;
  max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  padding: 28px 0 48px;
}

/* ---------- Sidebar nav ---------- */
.docNavGroup { margin-bottom: 22px; }
.docNavGroup__title {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted); font-weight: 700; margin: 0 0 8px; padding: 0 12px;
}
.docNavGroup__list { list-style: none; margin: 0; padding: 0; }
.docNavGroup__list a {
  display: block; padding: 6px 12px; border-radius: 7px;
  color: var(--text-2); font-size: 14.5px; font-weight: 500;
  border-left: 2px solid transparent;
}
.docNavGroup__list a:hover { color: var(--text); background: var(--surface); text-decoration: none; }
.docNavGroup__list a.is-active {
  color: var(--accent); background: var(--accent-muted);
  border-left-color: var(--accent); font-weight: 600;
  border-top-left-radius: 0; border-bottom-left-radius: 0;
}

/* ---------- TOC ---------- */
.docToc__title {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted); font-weight: 700; margin: 0 0 10px;
}
.docToc__list { list-style: none; margin: 0; padding: 0; }
.docToc__list a { display: block; padding: 4px 0; color: var(--text-2); font-size: 13.5px; line-height: 1.45; }
.docToc__list a:hover { color: var(--text); text-decoration: none; }
.docToc__list .lvl-3 { padding-left: 14px; font-size: 13px; }

/* ---------- Breadcrumb ---------- */
.docCrumb { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.docCrumb a { color: var(--text-2); }
.docCrumb span { color: var(--muted); margin: 0 8px; }

/* ---------- Article content ---------- */
.docContent h1 { font-size: 2.3rem; line-height: 1.2; margin: 0 0 14px; letter-spacing: -0.02em; }
.docContent h2 { font-size: 1.5rem; margin: 44px 0 14px; padding-top: 6px; letter-spacing: -0.01em; }
.docContent h3 { font-size: 1.18rem; margin: 30px 0 10px; }
.docContent h4 { font-size: 1.02rem; margin: 24px 0 8px; color: var(--text-2); }
.docContent p { margin: 0 0 16px; color: #d7dae6; }
.docContent strong { color: var(--text); }
.docContent .doc-lead { font-size: 1.18rem; color: var(--text-2); line-height: 1.6; margin-bottom: 28px; }
.docContent ul.doc-list, .docContent ol.doc-list { margin: 0 0 18px; padding-left: 24px; color: #d7dae6; }
.docContent .doc-list li { margin: 6px 0; }
.docContent .doc-list li::marker { color: var(--accent); }
.docContent .doc-hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }

.docContent h2:hover .doc-anchor, .docContent h3:hover .doc-anchor { opacity: 1; }
.doc-anchor { opacity: 0; margin-left: 8px; color: var(--muted); font-weight: 400; text-decoration: none; transition: opacity 0.15s; }
.doc-anchor:hover { color: var(--accent); text-decoration: none; }

/* ---------- Lead tag pills ---------- */
.docMeta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0 0 26px; color: var(--muted); font-size: 13px; }
.docMeta__tag { background: var(--surface-2); border: 1px solid var(--border); color: var(--text-2); border-radius: 999px; padding: 2px 10px; font-size: 12px; }
.docMeta__date { color: var(--muted); }

/* ---------- Screenshot figures ---------- */
.doc-shot {
  margin: 26px 0; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border); background: var(--surface);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}
.doc-shot::before {
  content: ''; display: block; height: 34px;
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border-bottom: 1px solid var(--border-subtle);
  background-image: radial-gradient(circle 5px at 20px 17px, #e05c5c 5px, transparent 5px),
    radial-gradient(circle 5px at 40px 17px, #f0b429 5px, transparent 5px),
    radial-gradient(circle 5px at 60px 17px, #4caf82 5px, transparent 5px);
}
.doc-shot img, .doc-shot video { display: block; max-width: 100%; max-height: min(70vh, 600px); width: auto; height: auto; margin: 0 auto; }
.doc-shot figcaption { padding: 12px 18px; font-size: 13.5px; color: var(--text-2); background: var(--surface); border-top: 1px solid var(--border-subtle); }

/* ---------- Callouts ---------- */
.doc-callout {
  display: flex; gap: 12px; margin: 22px 0; padding: 14px 18px;
  border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--surface); border-left-width: 3px;
}
.doc-callout__body { flex: 1; }
.doc-callout__body > :first-child { margin-top: 0; }
.doc-callout__body > :last-child { margin-bottom: 0; }
.doc-callout--note { border-left-color: var(--accent); background: var(--accent-muted); }
.doc-callout--tip { border-left-color: var(--success); background: rgba(76, 175, 130, 0.12); }
.doc-callout--warning { border-left-color: var(--warning); background: rgba(240, 180, 41, 0.1); }
.doc-callout--important { border-left-color: var(--error); background: rgba(224, 92, 92, 0.1); }

.doc-quote { margin: 22px 0; padding: 4px 18px; border-left: 3px solid var(--border); color: var(--text-2); }

/* ---------- Screenshot placeholder (until a real image is supplied) ---------- */
.doc-figph {
  margin: 26px 0; min-height: 160px; padding: 28px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 6px;
  border: 1.5px dashed var(--border); border-radius: var(--radius-lg);
  background: repeating-linear-gradient(45deg, var(--surface), var(--surface) 12px, rgba(255,255,255,0.015) 12px, rgba(255,255,255,0.015) 24px);
  color: var(--text-2);
}
.doc-figph::before { content: '🖼'; font-size: 26px; opacity: 0.7; }
.doc-figph p { margin: 0; max-width: 460px; color: var(--text-2); font-size: 14px; }
.doc-figph .doc-figph__title { color: var(--text); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; }

/* ---------- Code ---------- */
.doc-code {
  margin: 20px 0; padding: 16px 18px; overflow-x: auto;
  background: #0c0e14; border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 13.5px; line-height: 1.6;
}
.doc-code code { font-family: 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace; color: #cdd6f4; }
.docContent :not(pre) > code {
  font-family: 'SF Mono', Menlo, Consolas, monospace; font-size: 0.88em;
  background: var(--surface-2); border: 1px solid var(--border-subtle);
  border-radius: 5px; padding: 1px 6px; color: #e6b3ff;
}

/* ---------- Tables ---------- */
.doc-table-wrap { overflow-x: auto; margin: 22px 0; }
.doc-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.doc-table th, .doc-table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); }
.doc-table th { color: var(--text); font-weight: 600; background: var(--surface); border-bottom-color: var(--border); }
.doc-table td { color: var(--text-2); }
.doc-table tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* ---------- Hub: hero + cards ---------- */
.doc-hero {
  margin: 8px 0 36px; padding: 40px; border-radius: var(--radius-lg);
  background: radial-gradient(120% 140% at 0% 0%, rgba(91, 138, 240, 0.18), transparent 55%), var(--surface);
  border: 1px solid var(--border);
}
.doc-hero__title { font-size: 2.6rem !important; margin: 0 0 12px !important; }
.doc-grid { display: flex; flex-wrap: wrap; gap: 16px; margin: 24px 0; }
.doc-card {
  flex: 1 1 240px; padding: 20px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  transition: border-color 0.15s, transform 0.15s;
}
.doc-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.doc-card__title { font-weight: 600; }
.doc-card > :first-child { margin-top: 0; }
.doc-card > :last-child { margin-bottom: 0; }
.doc-card a { font-weight: 600; }

/* ---------- Releases list ---------- */
.docReleases { list-style: none; margin: 24px 0; padding: 0; }
.docReleases__item { padding: 22px 0; border-bottom: 1px solid var(--border-subtle); }
.docReleases__date { font-size: 13px; color: var(--muted); }
.docReleases__title { font-size: 1.25rem; margin: 4px 0 6px; }
.docReleases__title a { color: var(--text); }
.docReleases__title a:hover { color: var(--accent); text-decoration: none; }
.docReleases__desc { color: var(--text-2); margin: 0; }

/* ---------- Page nav (prev / app CTA) ---------- */
.docCta {
  margin: 44px 0 0; padding: 24px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(91, 138, 240, 0.16), var(--surface));
  border: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap;
}
.docCta__text { font-weight: 600; }
.docCta__btn { background: var(--accent); color: #fff; font-weight: 600; padding: 10px 20px; border-radius: 8px; white-space: nowrap; }
.docCta__btn:hover { background: var(--accent-hover); color: #fff; text-decoration: none; }

/* ---------- Footer ---------- */
.docFooter {
  border-top: 1px solid var(--border-subtle); margin-top: 40px;
  padding: 32px 24px; color: var(--muted); font-size: 14px;
}
.docFooter__inner { max-width: var(--maxw); margin: 0 auto; display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
.docFooter__inner a { color: var(--text-2); }
.docFooter__spacer { flex: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 1180px) {
  .docToc { display: none; }
}
@media (max-width: 880px) {
  .docSidebar {
    position: static; width: 100%; flex-basis: auto;
    max-height: none; border-bottom: 1px solid var(--border-subtle); padding: 16px 0;
  }
  .docLayout { flex-direction: column; gap: 0; padding: 0 18px; }
  .docMain { padding-top: 20px; }
  .docContent h1 { font-size: 1.9rem; }
  .doc-hero { padding: 26px; }
  .doc-hero__title { font-size: 2rem !important; }
  .docHeader__link { display: none; }
}