/* ── Chief of Agents Docs — design system ───────────────────────────── */
:root {
  --bg: #0b0e14;
  --panel: #12161f;
  --card: #171c28;
  --border: #232a3a;
  --text: #e7ebf4;
  --muted: #93a0b8;
  --accent: #5b8cff;
  --accent-2: #8a63ff;
  --green: #35c28a;
  --amber: #f5b544;
  --red: #ef6a6a;
  --radius: 14px;
  --sidebar-w: 288px;
  --toc-w: 240px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 70% -10%, #16203a 0%, var(--bg) 55%) fixed;
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100; background: var(--accent); color: #fff;
  padding: 10px 16px; border-radius: 0 0 8px 0; font-size: 14px; text-decoration: none;
}
.skip-link:focus { left: 0; }

/* ── Topbar ─────────────────────────────────────────────────────────── */
.docs-topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 14, 20, 0.86); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1400px; margin: 0 auto; padding: 12px 24px;
  display: flex; align-items: center; gap: 20px;
}
.docs-brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: .2px; font-size: 16px; }
.docs-brand .brand-mark {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-size: 16px;
}
.docs-brand em { color: var(--accent); font-style: normal; }
.topbar-search {
  flex: 1; max-width: 380px; position: relative; display: flex; align-items: center;
}
.topbar-search .search-icon { position: absolute; left: 12px; color: var(--muted); font-size: 15px; }
.topbar-search input {
  width: 100%; background: var(--panel); border: 1px solid var(--border); color: var(--text);
  border-radius: 9px; padding: 8px 12px 8px 34px; font-size: 14px; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.topbar-search input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(91,140,255,.15); }
.topbar-search .search-kbd {
  position: absolute; right: 10px; background: rgba(255,255,255,.06); border: 1px solid var(--border);
  color: var(--muted); border-radius: 5px; font-size: 11px; padding: 1px 6px; font-family: inherit;
}
.topbar-links { display: flex; gap: 4px; margin-left: auto; }
.topbar-links a { color: var(--muted); text-decoration: none; font-size: 14px; padding: 7px 12px; border-radius: 8px; transition: color .15s, background .15s; }
.topbar-links a:hover { color: var(--text); background: rgba(255,255,255,.04); }
.topbar-links a.active { color: var(--text); background: rgba(91,140,255,.12); font-weight: 600; }
.lang-toggle {
  background: transparent; color: var(--muted); border: 1px solid var(--border);
  border-radius: 8px; padding: 7px 12px; font-size: 13px; cursor: pointer; font-weight: 600; font-family: inherit;
  white-space: nowrap;
}
.lang-toggle:hover { color: var(--text); border-color: var(--muted); }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; cursor: pointer; flex-direction: column; gap: 4px; }
.nav-toggle span { width: 16px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .15s; }

/* ── Layout ─────────────────────────────────────────────────────────── */
.docs-layout { display: grid; grid-template-columns: var(--sidebar-w) minmax(0,1fr) var(--toc-w); max-width: 1400px; margin: 0 auto; gap: 0; }
/* Sticky must live on the grid item itself (with align-self: start) for the
   fixed sidebar/TOC to work — a sticky inner child of a stretched grid cell
   scrolls away in several browsers. */
.docs-sidebar { border-right: 1px solid var(--border); position: sticky; top: 70px; align-self: start; height: calc(100vh - 70px); overflow-y: auto; overscroll-behavior: contain; }
.sidebar-scroll { padding: 22px 14px 60px; scrollbar-width: thin; }
.docs-main { min-width: 0; padding: 34px 48px 80px; }
.docs-toc { border-left: 1px solid var(--border); position: sticky; top: 70px; align-self: start; height: calc(100vh - 70px); overflow-y: auto; overscroll-behavior: contain; }
.toc-sticky { padding: 30px 20px 60px; scrollbar-width: thin; }
.toc-title { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--muted); margin-bottom: 12px; }
#toc-nav a { display: block; color: var(--muted); text-decoration: none; font-size: 13px; padding: 4px 0 4px 10px; border-left: 2px solid transparent; line-height: 1.4; transition: color .12s, border-color .12s; }
#toc-nav a:hover { color: var(--text); }
#toc-nav a.lvl-h3 { padding-left: 24px; font-size: 12.5px; }
#toc-nav a.active { color: var(--accent); border-left-color: var(--accent); }

/* ── Sidebar nav ────────────────────────────────────────────────────── */
.sidebar-group { margin-bottom: 22px; }
.sidebar-group-title {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--muted); padding: 0 10px 8px;
}
.sidebar-link {
  display: flex; align-items: center; gap: 8px; color: var(--muted); text-decoration: none;
  font-size: 14px; padding: 6px 10px; border-radius: 8px; line-height: 1.35;
  transition: color .12s, background .12s;
}
.sidebar-link:hover { color: var(--text); background: rgba(255,255,255,.04); }
.sidebar-link.active { color: var(--text); background: rgba(91,140,255,.12); font-weight: 600; }
.sidebar-link .soon { font-size: 10px; color: var(--amber); border: 1px solid rgba(245,181,68,.4); border-radius: 4px; padding: 0 4px; margin-left: auto; }
.sidebar-link .badge-soon { font-size: 10px; color: var(--amber); border: 1px solid rgba(245,181,68,.4); border-radius: 4px; padding: 0 4px; margin-left: auto; white-space: nowrap; }

/* ── Breadcrumbs ────────────────────────────────────────────────────── */
.breadcrumbs { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); margin-bottom: 18px; flex-wrap: wrap; }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--text); }
.breadcrumbs .sep { opacity: .5; }
.breadcrumbs .current { color: var(--text); font-weight: 600; }

/* ── Content ────────────────────────────────────────────────────────── */
.docs-content { max-width: 760px; }
.docs-content h1 { font-size: clamp(28px, 3.6vw, 38px); line-height: 1.15; font-weight: 750; letter-spacing: -0.5px; margin: 0 0 6px; }
.docs-content .article-desc { color: var(--muted); font-size: 17px; margin-bottom: 26px; }
.docs-content h2 { font-size: 24px; font-weight: 700; letter-spacing: -0.3px; margin: 40px 0 12px; padding-top: 8px; scroll-margin-top: 90px; }
.docs-content h3 { font-size: 18px; font-weight: 650; margin: 28px 0 10px; scroll-margin-top: 90px; }
.docs-content h4 { font-size: 15.5px; font-weight: 650; margin: 22px 0 8px; }
.docs-content p { font-size: 15px; margin: 0 0 16px; color: #d6dceb; }
.docs-content a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(91,140,255,.3); transition: border-color .12s; }
.docs-content a:hover { border-bottom-color: var(--accent); }
.docs-content ul, .docs-content ol { margin: 0 0 16px; padding-left: 24px; font-size: 15px; color: #d6dceb; }
.docs-content li { margin: 5px 0; }
.docs-content li::marker { color: var(--accent); }
.docs-content code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.08);
  border-radius: 5px; padding: 1.5px 6px; font-size: 13px; color: #9db8ff;
}
.docs-content strong { color: var(--text); font-weight: 650; }
.docs-content hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }

/* Code blocks with copy button */
.code-block { position: relative; margin: 0 0 18px; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); background: #0d1117; }
.code-block .code-head { display: flex; justify-content: space-between; align-items: center; padding: 7px 12px; background: rgba(255,255,255,.03); border-bottom: 1px solid var(--border); }
.code-block .code-lang { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }
.copy-btn { background: rgba(255,255,255,.06); border: 1px solid var(--border); color: var(--muted); border-radius: 6px; font-size: 12px; padding: 3px 10px; cursor: pointer; font-family: inherit; transition: all .12s; }
.copy-btn:hover { color: var(--text); border-color: var(--muted); }
.copy-btn.copied { color: var(--green); border-color: var(--green); }
.code-block pre { padding: 14px 16px; overflow-x: auto; font-size: 13.5px; line-height: 1.55; }
.code-block pre code { background: none; border: none; padding: 0; color: #c9d4f0; font-size: 13.5px; }

/* Tables */
.docs-table-wrap { overflow-x: auto; margin: 0 0 18px; border: 1px solid var(--border); border-radius: 12px; }
table.docs-table { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 520px; }
.docs-table th { text-align: left; background: rgba(255,255,255,.04); color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .6px; padding: 10px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.docs-table td { padding: 10px 14px; border-bottom: 1px solid rgba(35,42,58,.6); color: #d6dceb; vertical-align: top; }
.docs-table tr:last-child td { border-bottom: none; }
.docs-table td code { white-space: nowrap; }
.docs-table .tone-good { color: var(--green); }
.docs-table .tone-warn { color: var(--amber); }
.docs-table .tone-risk { color: var(--red); }

/* Callouts */
.callout { display: flex; gap: 12px; margin: 0 0 18px; padding: 14px 16px; border-radius: 12px; border: 1px solid; font-size: 14px; line-height: 1.55; }
.callout .callout-icon { font-size: 16px; line-height: 1.4; }
.callout p { margin: 0; font-size: 14px; }
.callout.info { background: rgba(91,140,255,.07); border-color: rgba(91,140,255,.3); }
.callout.tip { background: rgba(53,194,138,.07); border-color: rgba(53,194,138,.3); }
.callout.warning { background: rgba(245,181,68,.07); border-color: rgba(245,181,68,.35); }
.callout.soon { background: rgba(138,99,255,.07); border-color: rgba(138,99,255,.35); }
.callout.bug { background: rgba(239,106,106,.08); border-color: rgba(239,106,106,.35); }

/* Shortcuts / key caps */
kbd.keys {
  display: inline-block; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: rgba(255,255,255,.08); border: 1px solid var(--border); border-bottom-width: 2px;
  border-radius: 6px; padding: 2px 8px; font-size: 12.5px; color: var(--text); margin: 2px 2px;
}
.shortcut-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 8px; margin: 0 0 18px; }
.shortcut-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; }
.shortcut-card .shortcut-action { font-size: 13px; color: var(--muted); margin-bottom: 6px; }

/* Steps (numbered workflow) */
.steps { counter-reset: step; list-style: none; padding-left: 0; margin: 0 0 18px; }
.steps > li { counter-increment: step; position: relative; padding-left: 40px; margin: 12px 0; font-size: 15px; color: #d6dceb; }
.steps > li::before {
  content: counter(step); position: absolute; left: 0; top: 1px;
  width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-size: 12.5px; font-weight: 700;
}
.steps > li > strong { display: block; color: var(--text); }

/* Command reference */
.cmd-table td:first-child code { color: #9db8ff; font-weight: 600; }

/* FAQ */
details.faq { border: 1px solid var(--border); border-radius: 12px; margin: 0 0 10px; background: var(--card); overflow: hidden; }
details.faq summary { cursor: pointer; padding: 14px 18px; font-weight: 600; font-size: 14.5px; list-style: none; position: relative; padding-right: 40px; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "+"; position: absolute; right: 16px; color: var(--accent); font-size: 20px; transition: transform .15s; }
details.faq[open] summary::after { transform: rotate(45deg); }
details.faq .faq-body { padding: 0 18px 16px; font-size: 14px; color: #d6dceb; }

/* Decision tree */
.dtree { margin: 0 0 18px; }
.dtree .dt-node { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin: 8px 0; font-size: 14px; }
.dtree .dt-node .dt-q { font-weight: 650; color: var(--text); }
.dtree .dt-node .dt-arrow { color: var(--muted); margin: 0 8px; }
.dtree .dt-node.leaf { border-left: 3px solid var(--accent); }

/* Prev / next */
.prev-next { display: flex; gap: 12px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); }
.prev-next a {
  flex: 1; display: flex; flex-direction: column; gap: 4px; text-decoration: none;
  background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px;
  transition: border-color .15s, transform .1s;
}
.prev-next a:hover { border-color: var(--accent); transform: translateY(-1px); }
.prev-next a.next { text-align: right; align-items: flex-end; }
.prev-next .pn-label { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.prev-next .pn-title { color: var(--text); font-weight: 600; font-size: 14px; }
.prev-next a:only-child { flex: 1; }

/* Footer */
.docs-footer { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; }

/* Loading */
.loading-state { padding: 60px 0; color: var(--muted); text-align: center; }
.spinner { width: 28px; height: 28px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; margin: 0 auto 14px; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.error-state { padding: 40px 0; text-align: center; }
.error-state h2 { color: var(--red); }

/* Search overlay */
.search-overlay { position: fixed; inset: 0; background: rgba(5,7,12,.7); backdrop-filter: blur(4px); z-index: 90; display: flex; justify-content: center; padding: 12vh 20px 20px; }
.search-overlay[hidden] { display: none; }
.search-panel { width: 100%; max-width: 640px; height: max-content; max-height: 70vh; display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--border); border-radius: 16px; box-shadow: 0 30px 80px rgba(0,0,0,.5); overflow: hidden; }
.search-panel-head { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.search-panel-head .search-icon { color: var(--muted); font-size: 17px; }
.search-panel-head input { flex: 1; background: none; border: none; color: var(--text); font-size: 16px; outline: none; font-family: inherit; }
.search-panel-head kbd { background: rgba(255,255,255,.06); border: 1px solid var(--border); color: var(--muted); border-radius: 5px; font-size: 11px; padding: 2px 7px; font-family: inherit; }
.search-results { overflow-y: auto; padding: 10px; }
.search-empty { padding: 30px; text-align: center; color: var(--muted); font-size: 14px; }
.search-group-label { font-size: 11px; text-transform: uppercase; letter-spacing: 1.2px; color: var(--muted); padding: 10px 12px 6px; font-weight: 700; }
.search-result { display: block; width: 100%; text-align: left; background: none; border: none; cursor: pointer; border-radius: 10px; padding: 10px 12px; font-family: inherit; transition: background .1s; }
.search-result:hover, .search-result.focused { background: rgba(255,255,255,.05); }
.search-result .sr-title { color: var(--text); font-weight: 600; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.search-result .sr-title .lang-badge { font-size: 10px; font-weight: 700; border-radius: 4px; padding: 1px 6px; background: rgba(91,140,255,.15); color: var(--accent); }
.search-result .sr-group { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .8px; margin-top: 2px; }
.search-result .sr-snippet { font-size: 13px; color: var(--muted); margin-top: 3px; line-height: 1.45; }
.search-result .sr-snippet mark { background: rgba(245,181,68,.25); color: var(--amber); border-radius: 3px; padding: 0 1px; }
.search-hint { padding: 10px 18px; border-top: 1px solid var(--border); font-size: 12px; color: var(--muted); display: flex; gap: 14px; }

/* Toast */
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--green); color: #fff; padding: 10px 20px; border-radius: 10px; font-size: 14px; font-weight: 600; z-index: 120; box-shadow: 0 10px 30px rgba(0,0,0,.4); }

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 1120px) {
  .docs-layout { grid-template-columns: var(--sidebar-w) minmax(0,1fr); }
  .docs-toc { display: none; }
}
@media (max-width: 860px) {
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar {
    position: fixed; inset: 60px auto 0 0; width: min(300px, 82vw); z-index: 60;
    background: var(--panel); border-right: 1px solid var(--border);
    transform: translateX(-102%); transition: transform .2s ease; box-shadow: 0 20px 60px rgba(0,0,0,.4);
  }
  .docs-sidebar.open { transform: translateX(0); }
  .sidebar-scroll { height: 100%; }
  .nav-toggle { display: flex; }
  .docs-main { padding: 26px 22px 60px; }
  .topbar-links { display: none; }
  .topbar-search { display: none; }
  .topbar-inner { gap: 12px; }
  .topbar-search.mobile-visible { display: flex; position: absolute; left: 16px; right: 16px; top: 60px; max-width: none; }
  .topbar-search.mobile-visible input { background: var(--panel); border-color: var(--accent); }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001s !important; transition-duration: .001s !important; }
  html { scroll-behavior: auto; }
}