/* ===========================================================
   Upmeet Docs — "Signal" design system (v2)
   Brand-aligned with upmeet.ai: deep navy canvas, signature
   teal accent, azure for gradient moments. SVG stroke icons,
   dark-first with refined light mode. Tweaks panel exposes
   accent presets for live variant exploration.
   =========================================================== */

:root{
  --bg:#070b14; --surface:#0c1322; --surface-2:#111a2e; --border:rgba(148,178,255,.13);
  --ink:#eef3ff; --ink-dim:#b4c2dd; --ink-faint:#7d8dab;
  --accent:#1de9d0; --accent-ink:#03211d; --accent-dim:rgba(29,233,208,.12);
  --accent-strong:#5ff3e0;
  --azure:#3d8bff;
  --danger:#ff6b6b; --success:#4ade80;
  --radius:10px; --radius-lg:16px;
  --mono:'IBM Plex Mono',monospace; --sans:'Inter',system-ui,-apple-system,sans-serif;
  --maxw:1180px;
  --pad:24px;
  --shadow:0 10px 34px rgba(2,6,18,.5);
  --glow:0 0 0 1px rgba(29,233,208,.25), 0 6px 24px rgba(29,233,208,.12);
}
[data-theme="light"]{
  --bg:#f6f8fc; --surface:#ffffff; --surface-2:#edf1f8; --border:rgba(11,20,40,.11);
  --ink:#0b1428; --ink-dim:#405173; --ink-faint:#6d7c99;
  --accent:#0aa895; --accent-ink:#ffffff; --accent-dim:rgba(10,168,149,.10);
  --accent-strong:#078178;
  --shadow:0 10px 30px rgba(15,25,50,.08);
  --glow:0 0 0 1px rgba(10,168,149,.25), 0 6px 20px rgba(10,168,149,.10);
}
/* accent presets (Tweaks panel) */
[data-accent="azure"]{--accent:#3d8bff; --accent-ink:#ffffff; --accent-dim:rgba(61,139,255,.13); --accent-strong:#6aa8ff;}
[data-accent="violet"]{--accent:#8b7cff; --accent-ink:#ffffff; --accent-dim:rgba(139,124,255,.14); --accent-strong:#a89aff;}
[data-theme="dark"][data-accent="azure"]{--accent-ink:#061226;}
[data-theme="dark"][data-accent="violet"]{--accent-ink:#12082b;}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;overflow-x:clip;}
body{
  background:var(--bg); color:var(--ink); font-family:var(--sans);
  font-size:16px; line-height:1.65; -webkit-font-smoothing:antialiased;
  transition:background-color .2s ease, color .2s ease;
}
a{color:inherit; text-decoration:none;}
::selection{background:var(--accent-dim);}
img{max-width:100%;}
code{font-family:var(--mono); font-size:.88em; background:var(--surface-2); padding:.12em .42em; border-radius:5px; border:1px solid var(--border);}
pre{background:var(--surface-2); padding:14px 16px; border-radius:var(--radius); overflow-x:auto; border:1px solid var(--border);}
pre code{background:none;padding:0;border:none;}
table{width:100%; border-collapse:collapse; margin:20px 0; font-size:14.5px; border-radius:var(--radius); overflow:hidden; border:1px solid var(--border);}
th,td{border:1px solid var(--border); padding:10px 14px; text-align:left;}
th{background:color-mix(in srgb, var(--accent) 12%, var(--surface-2)); font-weight:700; color:var(--ink); font-size:12.5px; text-transform:uppercase; letter-spacing:.04em;}
tr:nth-child(even) td{background:color-mix(in srgb, var(--surface-2) 55%, transparent);}
blockquote{border-left:3px solid var(--accent); margin:18px 0; padding:2px 18px; color:var(--ink-dim); background:var(--accent-dim); border-radius:0 8px 8px 0;}
hr{border:none; border-top:1px solid var(--border); margin:32px 0;}
.docbody img{
  display:block; margin:20px 0; border-radius:var(--radius-lg); border:1px solid var(--border);
  background:#fff; padding:10px; box-shadow:var(--shadow);
}

/* SVG icon primitives */
.ic{width:18px;height:18px;flex:none;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.ic-sm{width:15px;height:15px;}
.ic-lg{width:22px;height:22px;}

/* ---------- topbar ---------- */
.topbar{
  position:sticky; top:0; z-index:40; display:flex; align-items:center; gap:14px;
  padding:13px var(--pad); border-bottom:1px solid var(--border);
  background:color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter:blur(12px);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;letter-spacing:-.01em; flex:none;}
.brand .mark{width:24px;height:24px;flex:none;}
.brand-logo{height:32px;width:auto;display:block;filter:brightness(1.3);} 
.brand .docs-tag{
  font-family:var(--mono); font-size:10px; font-weight:500; text-transform:uppercase; letter-spacing:.08em;
  color:var(--accent); border:1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  padding:2px 7px; border-radius:20px; margin-left:2px;
}
.searchbtn{
  margin-left:10px; display:flex; align-items:center; gap:10px; width:320px; max-width:32vw;
  padding:8px 12px; border:1px solid var(--border); border-radius:8px; color:var(--ink-faint);
  font-size:13px; background:var(--surface); cursor:pointer; font-family:var(--sans);
  transition:border-color .15s ease;
}
.searchbtn:hover{border-color:color-mix(in srgb, var(--accent) 45%, var(--border)); color:var(--ink-dim);}
.searchbtn span{white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
.searchbtn kbd{
  margin-left:auto; font-family:var(--mono); font-size:11px; border:1px solid var(--border);
  border-radius:4px; padding:1px 5px; color:var(--ink-faint); flex:none;
}
.iconbtn{
  width:34px;height:34px;border-radius:8px;border:1px solid var(--border);background:var(--surface);
  color:var(--ink-dim); cursor:pointer; display:flex;align-items:center;justify-content:center; flex:none;
  transition:color .15s ease, border-color .15s ease;
}
.iconbtn:hover{color:var(--ink); border-color:color-mix(in srgb, var(--accent) 45%, var(--border));}
.menubtn{display:none;}
.home-link-mobile{display:none;}  /* Vue d'ensemble, mobile only */
.side-cta{display:none;}        /* CTA inside the mobile drawer */
.cta{
  padding:6px 12px; border-radius:7px; background:var(--accent); color:var(--accent-ink);
  font-weight:600; font-size:12px; white-space:nowrap; flex:none;
  display:inline-flex; align-items:center; gap:6px;
  transition:filter .15s ease, transform .15s ease;
}
.cta:hover{filter:brightness(1.08); transform:translateY(-1px);}
.cta-support{background:transparent;border:1px solid var(--border);color:var(--text);}
.cta-support:hover{filter:none;border-color:var(--accent);color:var(--accent);}
.topbar-actions{display:flex;align-items:center;gap:8px;margin-left:auto;}
.tweaks-wrap{position:relative;}

/* ---------- tweaks panel ---------- */
.tweaks{
  position:absolute; top:44px; right:0; width:238px; z-index:60;
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg);
  box-shadow:var(--shadow); padding:16px; display:none;
}
.tweaks.open{display:block;}
.tweaks .t-lbl{font-family:var(--mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.07em; color:var(--ink-faint); margin:0 0 9px;}
.tweaks .t-lbl:not(:first-child){margin-top:15px;}
.swatches{display:flex; gap:9px;}
.swatch{
  width:34px; height:34px; border-radius:50%; cursor:pointer; border:2px solid transparent;
  outline:2px solid transparent; outline-offset:2px; padding:0;
  transition:outline-color .15s ease, transform .15s ease;
}
.swatch:hover{transform:scale(1.08);}
.swatch.sel{outline-color:var(--ink-dim);}
.swatch[data-set-accent="brand"]{background:linear-gradient(135deg,#1de9d0,#0aa895);}
.swatch[data-set-accent="azure"]{background:linear-gradient(135deg,#6aa8ff,#3d8bff);}
.swatch[data-set-accent="violet"]{background:linear-gradient(135deg,#a89aff,#8b7cff);}
.t-row{display:flex; align-items:center; justify-content:space-between; gap:10px; font-size:13px; color:var(--ink-dim);}
.t-note{margin-top:14px; padding-top:11px; border-top:1px solid var(--border); font-size:11px; color:var(--ink-faint); line-height:1.5;}

/* ---------- search modal ---------- */
.search-modal{
  position:fixed; inset:0; background:rgba(3,6,14,.62); z-index:100; display:none;
  align-items:flex-start; justify-content:center; padding-top:12vh; backdrop-filter:blur(3px);
}
.search-modal.open{display:flex;}
.search-box{
  width:min(560px,90vw); background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg);
  box-shadow:var(--shadow); overflow:hidden;
}
#searchInput{
  width:100%; border:none; background:transparent; color:var(--ink); font-size:16px; padding:18px 20px;
  border-bottom:1px solid var(--border); outline:none; font-family:var(--sans);
}
.search-results{max-height:50vh; overflow-y:auto;}
.search-result{
  display:flex; gap:12px; align-items:flex-start; padding:12px 18px; border-bottom:1px solid var(--border); cursor:pointer;
}
.search-result:hover, .search-result.sel{background:var(--accent-dim);}
.search-result .sr-ic{
  width:30px; height:30px; flex:none; border-radius:8px; background:var(--surface-2); border:1px solid var(--border);
  display:flex; align-items:center; justify-content:center; color:var(--accent);
}
.search-result .sr-title{font-weight:600; font-size:14px;}
.search-result .sr-section{font-size:10.5px; color:var(--ink-faint); font-family:var(--mono); text-transform:uppercase; letter-spacing:.05em;}
.search-result .sr-snip{font-size:12.5px; color:var(--ink-dim); margin-top:2px;}
.search-hint{padding:10px 20px; font-size:11.5px; color:var(--ink-faint); font-family:var(--mono);}
.search-empty{padding:24px 20px; color:var(--ink-faint); font-size:13.5px;}

/* ---------- hero (index page) ---------- */
.hero{max-width:860px; margin:0 auto; padding:64px var(--pad) 30px; text-align:center;}
.waveform{display:flex;align-items:center;justify-content:center;gap:4px;height:44px;margin:0 auto 20px; max-width:380px;}
.waveform span{width:4px;border-radius:3px;background:linear-gradient(180deg,var(--accent),var(--azure)); animation:wave 1.6s ease-in-out infinite; opacity:.9;}
@keyframes wave{0%,100%{transform:scaleY(.35);}50%{transform:scaleY(1);}}
@media (prefers-reduced-motion:reduce){.waveform span{animation:none;transform:scaleY(.7);}}
.kicker{
  font-family:var(--mono); font-size:11.5px; letter-spacing:.09em; text-transform:uppercase;
  color:var(--accent); margin-bottom:16px; display:inline-flex; align-items:center; gap:8px;
  border:1px solid color-mix(in srgb, var(--accent) 30%, transparent); border-radius:20px; padding:5px 13px;
  background:var(--accent-dim);
}
.kicker::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb, var(--accent) 20%, transparent);}
h1.display{font-size:clamp(34px,5.4vw,54px); line-height:1.08; letter-spacing:-.025em; margin:0 0 16px; font-weight:800;}
h1.display em{color:var(--accent); font-style:normal;}
.sub{font-size:17px; color:var(--ink-dim); max-width:560px; margin:0 auto 30px; line-height:1.6;}
.hero-actions{display:flex; gap:12px; justify-content:center; margin-bottom:8px; flex-wrap:wrap;}
.btn{padding:11px 20px;border-radius:9px;font-weight:600;font-size:14px;border:1px solid transparent; display:inline-flex; align-items:center; gap:8px; transition:transform .15s ease, filter .15s ease, border-color .15s ease;}
.btn-primary{background:var(--accent);color:var(--accent-ink);font-weight:700;}
.btn-primary:hover{filter:brightness(1.08); transform:translateY(-1px);}
.btn-ghost{border-color:color-mix(in srgb, var(--ink) 22%, transparent); color:var(--ink); background:var(--surface);}
.btn-ghost:hover{border-color:color-mix(in srgb, var(--accent) 45%, var(--border));}

.grid-wrap{max-width:var(--maxw); margin:0 auto; padding:0 var(--pad) 40px;}
.section-label{font-family:var(--mono); font-size:11.5px; color:var(--ink-faint); text-transform:uppercase; letter-spacing:.09em; margin:36px 0 16px; display:flex; align-items:center; gap:10px;}
.section-label::after{content:'';flex:1;height:1px;background:var(--border);}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;}
.card{border:1px solid var(--border); border-radius:var(--radius); padding:18px 20px; background:var(--surface); transition:border-color .15s ease, transform .15s ease;}
.card:hover{border-color:color-mix(in srgb, var(--accent) 55%, var(--border)); transform:translateY(-2px);}
.card .num{font-family:var(--mono); font-size:11.5px; color:var(--accent); margin-bottom:10px; display:block;}
.card h3{font-size:15px; margin:0 0 6px; font-weight:600; display:flex; align-items:center; gap:9px;}
.card h3 .ic{color:var(--accent);}
.card p{font-size:13.5px; color:var(--ink-dim); margin:0; line-height:1.5;}

.section-card{
  border:1px solid var(--border); border-radius:var(--radius-lg); padding:20px; background:var(--surface);
  display:flex; flex-direction:column; gap:9px; position:relative;
  transition:border-color .15s ease, transform .15s ease;
}
.section-card:hover{border-color:color-mix(in srgb, var(--accent) 55%, var(--border)); transform:translateY(-2px);}
.section-card .icon{
  width:38px; height:38px; border-radius:10px; background:var(--accent-dim);
  display:flex; align-items:center; justify-content:center; color:var(--accent);
}
.section-card h3{margin:0; font-size:15.5px; padding-right:20px;}
.section-card p{margin:0; font-size:13.5px; color:var(--ink-dim); line-height:1.5;}
.section-card .pagecount{font-family:var(--mono); font-size:11px; color:var(--ink-faint); margin-top:auto; padding-top:6px;}
.section-card .arrow{
  position:absolute; top:20px; right:18px; color:var(--ink-dim);
  transition:color .15s ease, transform .15s ease;
}
.section-card:hover .arrow{color:var(--accent); transform:translate(2px,-2px);}

.mission{
  border:1px solid var(--border); border-radius:var(--radius-lg); padding:28px;
  background:linear-gradient(135deg, var(--surface) 0%, color-mix(in srgb, var(--accent) 5%, var(--surface)) 100%);
}
.mission p{margin:0 0 10px; color:var(--ink-dim); font-size:15px;}
.mission p:last-child{margin:0;}
.mission strong{color:var(--ink);}

/* ---------- doc layout ---------- */
.layout{display:grid; grid-template-columns:250px minmax(0,1fr) 220px; max-width:1400px; margin:0 auto; align-items:start;}
.side{padding:26px 16px; font-size:13.5px; position:sticky; top:64px; max-height:calc(100vh - 64px); overflow-y:auto;}
.side .side-home{display:flex; align-items:center; gap:9px; color:var(--ink-dim); font-weight:600; padding:7px 9px; margin-bottom:10px; border-radius:7px;}
.side .side-home:hover{background:var(--surface-2); color:var(--ink);}
.side .grp{font-family:var(--mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.07em; color:var(--ink-faint); margin:18px 0 5px; padding:0 9px;}
.side a.navlink{display:flex; align-items:center; gap:9px; color:var(--ink-dim); padding:6px 0; border-radius:7px; position:relative;}
.side a.navlink .ic{width:15px;height:15px;color:var(--ink-faint); transition:color .15s ease;}
.side a.navlink:hover{background:var(--surface-2); color:var(--ink);}
.side a.navlink:hover .ic{color:var(--ink-dim);}
.side a.navlink.active{color:var(--ink); font-weight:600; background:var(--accent-dim);}
.side a.navlink.active .ic{color:var(--accent);}
.side a.navlink.active::before{content:'';position:absolute;left:0;top:8px;bottom:8px;width:2px;background:var(--accent); border-radius:2px;}

.doc{padding:42px 48px 80px; border-left:1px solid var(--border); border-right:1px solid var(--border); min-width:0;}
.doc .crumb{font-family:var(--mono); font-size:11.5px; color:var(--ink-faint); margin-bottom:16px; text-transform:uppercase; letter-spacing:.06em;}
.doc-head{display:flex; align-items:center; gap:16px; margin:0 0 26px;}
.doc-head .page-icon{
  width:52px; height:52px; flex:none; border-radius:14px; background:var(--accent-dim);
  border:1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  display:flex; align-items:center; justify-content:center; color:var(--accent);
}
.doc-head h1{font-size:30px; margin:0; letter-spacing:-.02em; line-height:1.2;}
.docbody{color:var(--ink); font-size:15.5px;}
.docbody p{color:var(--ink-dim);}
.docbody h1{font-size:26px;margin:40px 0 14px;}
.docbody h2{font-size:21px;margin:36px 0 12px; padding-top:24px; border-top:1px solid color-mix(in srgb, var(--ink) 15%, transparent); letter-spacing:-.01em;}
.docbody h2:first-child{border-top:none;padding-top:0;margin-top:0;}
.docbody h3{font-size:17px;margin:24px 0 10px; color:var(--ink);}
.docbody h4{font-size:14px;margin:20px 0 8px; color:var(--ink-dim); text-transform:uppercase; letter-spacing:.04em; font-family:var(--mono); font-weight:500;}
.docbody ul,.docbody ol{padding-left:22px; color:var(--ink-dim);}
.docbody li{margin:6px 0;}
.docbody li::marker{color:var(--accent);}
.docbody li strong, .docbody p strong{color:var(--ink); font-weight:600;}
.docbody a{color:var(--accent); text-decoration:underline; text-decoration-color:color-mix(in srgb, var(--accent) 35%, transparent); text-underline-offset:2px;}
.docbody a:hover{color:var(--accent-strong); text-decoration-color:var(--accent-strong);}

.docbody img{max-width:100%;border-radius:var(--radius);margin:12px 0;}
.docbody iframe{display:block;width:calc(100% + 96px);margin:28px -48px;border-radius:var(--radius-lg);border:1px solid var(--border);box-sizing:border-box;max-width:calc(100% + 96px);}

.prevnext{display:flex; justify-content:space-between; gap:16px; margin-top:56px; padding-top:24px; border-top:1px solid var(--border);}
.pn{border:1px solid var(--border); border-radius:var(--radius); padding:13px 17px; display:flex; flex-direction:column; gap:5px; width:48%; transition:border-color .15s ease, transform .15s ease;}
.pn:hover{border-color:color-mix(in srgb, var(--accent) 55%, var(--border)); transform:translateY(-1px);}
.pn.next{text-align:right; margin-left:auto;}
.pn-lbl{font-family:var(--mono); font-size:10.5px; color:var(--ink-faint); text-transform:uppercase; letter-spacing:.05em;}
.pn-title{font-size:14px; font-weight:600; display:flex; align-items:center; gap:8px;}
.pn.next .pn-title{justify-content:flex-end;}
.pn-title .ic{width:14px;height:14px;color:var(--accent);}

.toc{padding:30px 18px; font-size:13px; position:sticky; top:64px; max-height:calc(100vh - 64px); overflow-y:auto;}
.toc .lbl{font-family:var(--mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.07em;color:var(--ink-faint);margin-bottom:10px;}
.toc a{display:block; color:var(--ink-dim); padding:5px 0 5px 10px; border-left:2px solid transparent;}
.toc a:hover{color:var(--ink); border-left-color:var(--border);}
.toc a.active{color:var(--accent); border-left-color:var(--accent);}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--border); margin-top:20px;}
.foot-grid{
  max-width:var(--maxw); margin:0 auto; padding:44px var(--pad) 30px;
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:28px;
}
.foot-brand{display:flex; align-items:center; gap:10px; font-weight:700; font-size:14.5px; margin-bottom:12px;}
.foot-brand .mark{width:22px;height:22px;}
.foot-blurb{font-size:12.5px; color:var(--ink-faint); line-height:1.6; max-width:280px; margin:0;}
.foot-col .fc-lbl{font-family:var(--mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.07em; color:var(--ink-faint); margin-bottom:12px;}
.foot-col a{display:block; font-size:13px; color:var(--ink-dim); padding:4px 0;}
.foot-col a:hover{color:var(--accent);}
.foot-base{
  max-width:var(--maxw); margin:0 auto; padding:18px var(--pad) 34px; border-top:1px solid var(--border);
  display:flex; justify-content:space-between; gap:14px; flex-wrap:wrap;
  font-size:12px; color:var(--ink-faint);
}
.foot-base .fb-links{display:flex; gap:18px;}
.foot-base a{color:var(--ink-dim);}
.foot-base a:hover{color:var(--accent);}


/* ---------- accordion sidebar ---------- */
.side-section{margin-bottom:16px;}

.grp-toggle{
  display:flex; align-items:center; justify-content:space-between; width:100%; padding:6px 8px; 
  border:0; background:transparent;
  color:var(--ink); font-family:var(--sans); font-size:12.5px; font-weight:700; letter-spacing:.05em;
  cursor:pointer; transition:opacity .15s ease, color .15s ease; text-align:left;
  text-transform:uppercase; opacity:0.88;
}
.grp-toggle:hover{opacity:1; color:var(--ink);}
.grp-toggle .chevron{width:12px;height:12px;opacity:.3;transition:transform .15s ease; display:inline-block; margin-left:6px;}
.grp-toggle.open{opacity:1; color:var(--ink);}
.grp-pages{overflow:hidden; max-height:0; transition:max-height .12s ease;}
.grp-pages.open{max-height:600px;}
.grp-pages a.navlink{
  padding:8px 8px 8px 16px; margin:2px 0; border-radius:4px; font-size:13px; border:0 solid transparent;
  background:none; font-weight:500; transition:background .15s ease, border-color .15s ease;
}
.grp-pages a.navlink:hover{background:var(--surface-2); border-color:var(--border); font-weight:600;}
.grp-pages a.navlink.active{color:var(--ink); font-weight:700; background:var(--accent-dim); border-color:color-mix(in srgb, var(--accent) 30%, var(--border));}

/* ---------- side nav on landing pages (index, 404): desktop hidden, mobile drawer */
.layout:not(:has(.doc)) {
  grid-template-columns: 1fr;
  max-width: var(--maxw);
}
.layout:not(:has(.doc)) > .side{display:none;}
@media(max-width:820px){
  .layout:not(:has(.doc)) {
    grid-template-columns: 1fr;
    max-width: none;
  }
  .layout:not(:has(.doc)) > .side{display:none;}
  .layout:not(:has(.doc)) > .side.open{display:block;}
}
@media (max-width:1080px){
  .layout{grid-template-columns:230px minmax(0,1fr);}
  .toc{display:none;}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
/* --- mobile topbar --- */
@media(max-width:820px){
  :root{--pad:16px;}
  /* --- mobile topbar: logo left, hamburger right, no search --- */
  .topbar{flex-wrap:wrap; gap:2px 8px; padding:10px var(--pad) 6px; margin-bottom:0; background:var(--bg); backdrop-filter:none;}
  .brand{order:0;}
  .menubtn{display:flex; order:2; margin-left:auto; width:36px; height:36px; align-items:center; justify-content:center; border-radius:10px; background:rgba(255,255,255,0.06); border:1px solid rgba(255,255,255,0.12);}
  .searchbtn{display:none;}
  .topbar-actions{display:none;}
  .topbar-actions.open{display:flex; order:3; width:100%; justify-content:center; gap:10px; padding:6px 0 10px;}
  .topbar-actions .cta{flex:1; max-width:200px; text-align:center; justify-content:center; padding:8px 14px; font-size:12px; background:var(--surface-2); color:var(--ink); border:1px solid var(--border); border-radius:8px; font-weight:500;}
  .layout{grid-template-columns:1fr;}
  .side{
    display:none;
    background:var(--bg); border-bottom:1px solid var(--border);
    padding:14px var(--pad) 20px;
  }
  .side.open{display:block;}
  /* mobile search bar inside sidebar */
  .mobile-search{display:block; margin:10px 0 6px;}
  .mobile-search-input{display:block; width:100%; padding:8px 12px; border-radius:10px; border:1px solid var(--border); background:var(--surface-2); color:var(--ink); font-size:13px; font-family:var(--sans); outline:none; transition:border-color .15s;}
  .mobile-search-input:focus{border-color:var(--accent);}
  /* --- content: symmetric gutters, no horizontal overflow --- */
  .doc{border-left:none; border-right:none; padding:28px var(--pad) 60px;}
  .docbody{overflow-wrap:break-word;}
  .docbody table{display:block; max-width:100%; overflow-x:auto;}
  .doc-head h1{font-size:25px;}
  .hero{padding-top:48px; padding-bottom:26px;}
  h1.display{font-size:30px; line-height:1.15;}
  h1.display br{display:none;}             /* forced 2-line hero wraps naturally */
  h1.display em::before{content:' ';}      /* ...without gluing words together */
  .foot-grid{grid-template-columns:1fr; gap:20px;}
}

/* mobile search — hidden by default, shown via media queries below */
.mobile-search, .mobile-search-input, .mobile-search-results{display:none;}

/* ---------- desktop sidebar search ---------- */
@media(min-width:821px){
  body.has-sidebar .searchbtn{display:none;}
  .side .mobile-search{display:block; margin:0 0 16px;}
  .side .mobile-search-input{
    display:block; width:100%; padding:8px 12px; border-radius:8px;
    border:1px solid var(--border); background:var(--surface);
    color:var(--ink-faint); font-size:13px; font-family:var(--sans);
    outline:none; transition:border-color .15s; cursor:pointer;
  }
  .side .mobile-search-input:focus{border-color:var(--accent);}
}

/* ---------- language switcher ---------- */
.lang-opt{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  padding:8px 10px; border-radius:8px; font-size:13px; color:var(--ink-dim);
  transition:background .15s ease, color .15s ease;
}
.lang-opt:hover{background:color-mix(in srgb, var(--accent) 10%, transparent); color:var(--ink);}
.lang-opt.sel{color:var(--ink); font-weight:600;}
.lang-opt .ic{color:var(--accent); flex:none;}

/* ---------- translation fallback notice ---------- */
.notice-i18n{
  display:flex; align-items:center; gap:9px; margin:0 0 18px; padding:10px 14px;
  border:1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius:10px; background:color-mix(in srgb, var(--accent) 8%, transparent);
  color:var(--ink-dim); font-size:13px; line-height:1.45;
}
.notice-i18n .ic{color:var(--accent); flex:none;}