/* z-os.ai documentation chrome — shared by docs.html, docs-core.html, docs-gateway.html.
   Builds on styles.css (loaded first). */

/* header active state */
header.nav nav.links a.active{color:var(--ink)}

/* page title — lives at the top of the CONTENT column, beside the sidebar
   (no full-width hero band; the sidebar runs full-height from the top) */
.docs-title{margin:0 0 38px}
.docs-title .kicker{margin-bottom:14px}
.docs-title .hero-t{font-size:clamp(30px,4.5vw,44px)}
.meta{font-family:var(--sans);font-size:13px;color:var(--faint);margin-top:8px}

/* two-column layout: sticky sidebar + content */
.docs-layout{display:grid;grid-template-columns:232px minmax(0,1fr);gap:54px;max-width:1180px;margin:0 auto;padding:48px 30px 90px;align-items:start}

/* sidebar */
.docs-side{position:sticky;top:76px;max-height:calc(100vh - 96px);overflow-y:auto;font-family:var(--sans);scrollbar-width:thin}
.docs-menu>summary{display:none}
.side-head{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:6px 0 12px}
.side-search{position:relative;margin-bottom:16px}
.side-search input{width:100%;font-family:var(--sans);font-size:13.5px;padding:8px 10px;border:1px solid var(--line-2);border-radius:4px;background:var(--paper-2);color:var(--ink)}
.side-search input::placeholder{color:var(--faint)}
.side-search input:focus{outline:none;border-color:var(--accent)}
.search-results{position:absolute;top:calc(100% + 6px);left:0;right:-40px;z-index:30;background:var(--card);border:1px solid var(--line-2);border-radius:6px;box-shadow:0 12px 36px rgba(0,0,0,.55);max-height:340px;overflow-y:auto}
.search-results a{display:block;padding:9px 12px;text-decoration:none;border-bottom:1px solid var(--line)}
.search-results a:last-child{border-bottom:none}
.search-results a .t{display:block;font-size:13px;color:var(--ink);font-weight:600;line-height:1.35}
.search-results a .w{display:block;font-size:10.5px;color:var(--accent);font-family:var(--mono);letter-spacing:.04em;margin-top:2px}
.search-results a .s{display:block;font-size:12px;color:var(--muted);line-height:1.45;margin-top:3px}
.search-results a:hover,.search-results a.sel{background:var(--paper-2)}
.search-results .none{display:block;padding:10px 12px;font-size:12.5px;color:var(--muted)}
.side-nav a{display:block;font-size:13.5px;color:var(--muted);text-decoration:none;padding:5px 10px;border-left:2px solid transparent;border-radius:0 4px 4px 0;line-height:1.45}
.side-nav a:hover{color:var(--ink)}
.side-nav a.top{font-weight:600;color:var(--ink-soft);margin-top:10px}
.side-nav a.top:first-child{margin-top:0}
.side-nav a.sub{padding-left:24px;font-size:13px}
.side-nav a.active{color:var(--accent);border-left-color:var(--accent);background:rgba(210,117,74,.07)}

/* content column — typography (ported from the original single docs page) */
.doc{min-width:0;max-width:790px}
.doc h2{font-family:var(--serif);font-size:26px;font-weight:400;margin:54px 0 12px;letter-spacing:-.01em;padding-top:34px;border-top:1px solid var(--line)}
.doc h2.nb{border-top:none;padding-top:0;margin-top:8px}
.doc h3{font-family:var(--sans);font-size:15px;font-weight:600;margin:34px 0 8px;letter-spacing:.02em}
.doc h4{font-family:var(--sans);font-size:13.5px;font-weight:600;margin:24px 0 6px;color:var(--ink)}
.doc h2,.doc h3,.doc h4{scroll-margin-top:88px}
.doc p{font-size:16.5px;color:var(--ink-soft);margin-top:14px;line-height:1.7}
.doc .first{font-size:19.5px;color:var(--ink)}
.doc ul,.doc ol{margin:12px 0 0 20px;color:var(--ink-soft);font-size:15.5px;line-height:1.7}
.doc li{margin-top:7px}
.doc code{font-family:var(--mono);font-size:.9em;background:rgba(127,127,127,.11);border-radius:4px;padding:1px 5px;color:var(--ink)}
.doc pre{font-family:var(--mono);font-size:13px;line-height:1.75;background:rgba(127,127,127,.07);border-radius:10px;padding:16px 20px;margin-top:14px;overflow-x:auto}
.doc pre code{background:none;padding:0;font-size:inherit;color:var(--ink-soft)}
.doc table{width:100%;border-collapse:collapse;margin-top:14px;font-size:14px}
.doc th{font-family:var(--sans);font-size:11px;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);text-align:left;font-weight:600;padding:8px 12px 8px 0;border-bottom:1px solid var(--line-2)}
.doc td{padding:9px 12px 9px 0;border-bottom:1px solid var(--line);color:var(--ink-soft);vertical-align:top;line-height:1.55}
.doc td code,.doc th code{white-space:nowrap}
.doc a{color:var(--accent);text-decoration:none}
.doc a:hover{text-decoration:underline}
.sig{font-family:var(--mono);font-size:13.5px;color:var(--ink);background:rgba(127,127,127,.09);border-left:2px solid var(--accent);border-radius:0 8px 8px 0;padding:10px 16px;margin-top:18px;overflow-x:auto;white-space:pre}
.pill{display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.05em;border:1px solid var(--line-2);border-radius:4px;padding:1px 8px;color:var(--muted);vertical-align:middle;margin-left:8px;background:none}
.pipeline{font-family:var(--mono);font-size:13.5px;line-height:1.9;background:rgba(127,127,127,.07);border-radius:10px;padding:18px 22px;margin-top:18px;overflow-x:auto;white-space:pre;color:var(--ink-soft)}
.lic{border-left:2px solid var(--accent);padding-left:20px;margin:26px 0;font-size:16px;color:var(--ink-soft)}

/* layered architecture stack (docs.html overview) */
.arch{margin-top:20px;font-family:var(--sans)}
.arch-layer{border:1px solid var(--line-2);border-radius:8px;background:var(--card);padding:15px 20px}
.arch-layer.hl{border-left:2px solid var(--accent)}
.arch-layer.base{background:var(--paper-2);border-style:dashed}
.arch-layer .lab{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.arch-layer .who{font-size:15px;font-weight:600;color:var(--ink);margin-top:4px}
.arch-layer .who a{color:var(--ink)}
.arch-layer .who a:hover{color:var(--accent);text-decoration:none}
.arch-layer .what{font-size:13px;color:var(--muted);margin-top:4px;line-height:1.55}
.arch-flow{text-align:center;font-family:var(--mono);font-size:12px;color:var(--faint);padding:7px 0}
.arch-libs{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin-top:10px}
.arch-libs a{display:block;border:1px solid var(--line);border-radius:6px;padding:10px 12px;text-decoration:none;background:var(--paper-2)}
.arch-libs a:hover{border-color:var(--accent);text-decoration:none}
.arch-libs strong{display:block;font-family:var(--mono);font-size:12.5px;font-weight:600;color:var(--accent)}
.arch-libs span{display:block;font-size:12px;color:var(--muted);line-height:1.45;margin-top:3px}
.statusline{font-family:var(--sans);font-size:13px;color:var(--faint);margin-top:10px}

/* mobile: sidebar collapses to a details/summary block above the content */
@media(max-width:680px){
  .docs-layout{display:block;padding:20px 22px 70px}
  .docs-title{margin-bottom:30px}
  .docs-side{position:static;max-height:none;overflow:visible;margin-bottom:28px}
  .docs-menu{border:1px solid var(--line-2);border-radius:6px;background:var(--card)}
  .docs-menu>summary{display:block;cursor:pointer;font-family:var(--sans);font-size:14px;font-weight:600;color:var(--ink);padding:12px 14px;list-style:none}
  .docs-menu>summary::-webkit-details-marker{display:none}
  .docs-menu>summary::after{content:"\25BE";float:right;color:var(--muted)}
  .docs-menu[open]>summary::after{content:"\25B4"}
  .docs-menu .side-inner{padding:2px 14px 14px}
  .search-results{right:0}
}