/* Palette: #5465FF #788BFF #9BB1FF #BFD7FF #E2FDFF */
:root{
  --p1:#5465FF; --p2:#788BFF; --p3:#9BB1FF; --p4:#BFD7FF; --p5:#E2FDFF;
  --bg:#F5F7FF; --surface:#FFFFFF; --ink:#161B3D; --muted:#5A6285; --line:#E1E6F7;
  --accent:var(--p1); --accent-strong:#3D4DE8; --accent-ink:#FFFFFF;
  --soft:#EBF0FF; --soft-2:#DDE7FF; --ring:color-mix(in srgb,var(--p1) 28%,transparent);
  --mark:var(--p4); --mark-ink:#1E2A80; --glow:var(--p5);
  --danger:#D6394C; --ok:#1F9D6B; --warn:#D08A12;
  --shadow-sm:0 1px 2px rgba(22,27,61,.05),0 1px 3px rgba(84,101,255,.06);
  --shadow:0 2px 4px rgba(22,27,61,.04),0 8px 24px rgba(84,101,255,.08);
  --shadow-lg:0 12px 40px rgba(22,27,61,.18);
  --radius:14px; --radius-sm:10px;
  --sans:"Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --read:"Source Serif 4", Georgia, "Times New Roman", serif;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0C1030; --surface:#141A45; --ink:#E9EEFF; --muted:#9AA6D6; --line:#252D66;
    --accent:var(--p2); --accent-strong:var(--p3); --accent-ink:#0C1030;
    --soft:#1C2458; --soft-2:#26306E; --ring:color-mix(in srgb,var(--p2) 40%,transparent);
    --mark:#34409A; --mark-ink:var(--p5); --glow:#1F2A6B;
    --danger:#FF7D8C; --ok:#5ED6A4; --warn:#F2B955;
    --shadow-sm:0 1px 2px rgba(0,0,0,.3); --shadow:0 8px 24px rgba(0,0,0,.35); --shadow-lg:0 16px 48px rgba(0,0,0,.55);
  }
}
*,*::before,*::after{box-sizing:inherit}
html{height:100%}
body{height:100%;margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 var(--sans);-webkit-font-smoothing:antialiased}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
::selection{background:var(--p4);color:#161B3D}

/* Shell */
.shell{display:grid;grid-template-columns:248px 1fr;height:100%}
.side{background:linear-gradient(180deg,var(--surface) 0%,var(--surface) 55%,color-mix(in srgb,var(--glow) 55%,var(--surface)) 100%);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:18px 14px;gap:3px;min-height:0;overflow:auto}
.brand{display:flex;align-items:center;gap:11px;padding:4px 8px 22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-weight:700;font-size:15px;letter-spacing:-.01em}
.brand-text small{font-size:11.5px;font-weight:600;color:var(--accent-strong);letter-spacing:.06em;text-transform:uppercase;margin-top:3px}
.logo{width:38px;height:38px;flex:none;border-radius:11px;background:linear-gradient(135deg,var(--p1),var(--p2) 60%,var(--p3));color:#fff;display:grid;place-items:center;box-shadow:0 4px 12px color-mix(in srgb,var(--p1) 35%,transparent)}
.logo svg{width:20px;height:20px}
.side a{display:flex;align-items:center;gap:11px;padding:9px 12px;border-radius:10px;color:var(--muted);text-decoration:none;font-weight:500;font-size:14.5px;transition:background .15s,color .15s}
.side a svg{width:18px;height:18px;flex:none}
.side a:hover{background:var(--soft);color:var(--ink)}
.side a[aria-current="page"]{background:var(--accent);color:var(--accent-ink);font-weight:600;box-shadow:0 4px 12px color-mix(in srgb,var(--p1) 30%,transparent)}
.side a[aria-current="page"] .count{color:inherit;opacity:.85}
.side .count{margin-left:auto;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.nav-label{font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);padding:18px 12px 6px;opacity:.8}
.side-foot{margin-top:auto;padding:14px 10px 2px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);display:flex;flex-direction:column;gap:7px}
.side-foot div{display:flex;align-items:center;gap:8px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--p3);flex:none}
.dot.ok{background:var(--ok);box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 20%,transparent)}
.dot.busy{background:var(--warn)} .dot.bad{background:var(--danger)}

.main{display:flex;flex-direction:column;min-width:0;min-height:0;overflow:auto}
.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:12px;padding:16px 32px;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar h1{font:700 22px/1.2 var(--sans);letter-spacing:-.02em;flex:1}
.top-actions{display:flex;gap:8px}
.page{padding:28px 32px 44px;display:flex;flex-direction:column;gap:22px;max-width:1320px;width:100%}

/* Controls */
.btn{border:0;border-radius:10px;padding:9px 16px;background:var(--accent);color:var(--accent-ink);font-weight:600;font-size:14px;white-space:nowrap;box-shadow:0 2px 6px color-mix(in srgb,var(--p1) 30%,transparent);transition:background .15s,transform .1s,box-shadow .15s}
.btn:hover{background:var(--accent-strong)}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.btn.ghost:hover{border-color:var(--p3);background:var(--soft)}
.btn.danger{color:var(--danger)}
.btn:disabled{opacity:.5;cursor:default;transform:none}
.icon-btn{background:none;border:0;color:var(--muted);font-size:13px;padding:4px 8px;border-radius:6px}
.icon-btn:hover{color:var(--accent-strong);background:var(--soft)}
.hint{color:var(--muted);font-size:13px}
.link{text-decoration:none;color:var(--accent-strong)} .link:hover{text-decoration:underline}
.row{display:flex;gap:8px;flex-wrap:wrap}
.spacer{flex:1}
.lead{margin:0 0 12px;max-width:70ch;color:var(--muted)}

/* Panels */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow)}
.panel-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:16px}
.panel-head h2{font:700 15px/1.3 var(--sans);letter-spacing:-.01em}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}

/* Pipeline */
.pipe{list-style:none;margin:0;padding:6px 0 0;display:grid;grid-template-columns:repeat(5,minmax(92px,1fr));overflow-x:auto}
.step{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px}
.step:not(:last-child)::after{content:"";position:absolute;top:27px;left:calc(50% + 32px);right:calc(-50% + 32px);height:3px;border-radius:2px;background:var(--soft-2)}
.step.done:not(:last-child)::after{background:linear-gradient(90deg,var(--p1),var(--p2))}
.node{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;background:var(--soft);color:var(--p2);border:2px solid transparent;transition:background .25s,color .25s}
.node svg{width:24px;height:24px}
.step.done .node{background:linear-gradient(135deg,var(--p1),var(--p2));color:#fff;box-shadow:0 6px 16px color-mix(in srgb,var(--p1) 30%,transparent)}
.step.active .node{background:var(--surface);color:var(--accent);border-color:var(--accent);animation:pulse 1s ease-in-out infinite}
@keyframes pulse{50%{box-shadow:0 0 0 7px var(--ring)}}
.step b{font-weight:700;font-size:14px}
.step.idle b{color:var(--muted)}
.step small{color:var(--muted);font-size:12px;line-height:1.35;min-height:2.7em;max-width:19ch}

/* Stats: one strip, dividers between figures */
.stats{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;position:relative}
.stats::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--p1),var(--p2),var(--p3),var(--p4),var(--p5))}
.stat{padding:18px 22px;border-left:1px solid var(--line);min-width:0}
.stat:first-child{border-left:0}
.stat .v{font:700 28px/1.1 var(--sans);letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--ink)}
.stat .l{color:var(--ink);font-size:13px;font-weight:600;margin-top:6px}
.stat .s{color:var(--muted);font-size:12px}

.empty-state{text-align:center;padding:44px 20px;background:radial-gradient(ellipse at top,color-mix(in srgb,var(--glow) 70%,transparent),transparent 70%)}
.empty-state h2{font:700 20px/1.3 var(--sans);letter-spacing:-.01em;margin-bottom:8px}
.empty-state p{color:var(--muted);max-width:52ch;margin:0 auto 18px}

/* Charts */
.bars{display:flex;align-items:flex-end;gap:4px;height:150px;border-bottom:1px solid var(--line);position:relative;padding-top:18px}
.bars .b{flex:1;min-width:4px;max-width:36px;background:linear-gradient(180deg,var(--p2),var(--p1));border-radius:5px 5px 0 0;position:relative}
.bars .b.fail{background:var(--danger)}
.bars .b:hover{opacity:.8}
.bars .max{position:absolute;top:0;left:0;font-size:11px;color:var(--muted)}
.bars .ref{position:absolute;left:0;right:0;border-top:1px dashed var(--p3)}
.axis{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin-top:4px}
.hbars{display:flex;flex-direction:column;gap:12px}
.hbar{display:grid;grid-template-columns:minmax(0,1fr) 44px;gap:5px 10px;font-size:13px}
.hbar .name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.hbar .num{text-align:right;color:var(--muted);font-variant-numeric:tabular-nums}
.hbar .track{grid-column:1/-1;height:8px;background:var(--soft);border-radius:4px;overflow:hidden}
.hbar .track i{display:block;height:100%;background:linear-gradient(90deg,var(--p1),var(--p3));border-radius:4px}
.chart-note{margin:10px 0 0;font-size:12.5px}
.chart-note:empty{display:none}
.recent .tag{flex:none}
.none{color:var(--muted);font-size:13px;padding:24px 0;text-align:center}
.recent{list-style:none;margin:0;padding:0}
.recent li{display:flex;gap:12px;padding:10px 0;border-top:1px solid var(--line);font-size:14px}
.recent li:first-child{border-top:0;padding-top:0}
.recent .q{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.recent .m{color:var(--muted);font-size:12px;white-space:nowrap;font-variant-numeric:tabular-nums}

/* Tables */
.table-panel{padding:0;overflow-x:auto}
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th{text-align:left;font-weight:600;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em;padding:12px 18px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--soft) 60%,var(--surface));white-space:nowrap}
.table td{padding:12px 18px;border-bottom:1px solid var(--line);vertical-align:top}
.table tbody tr:hover td{background:color-mix(in srgb,var(--soft) 45%,transparent)}
.table tr:last-child td{border-bottom:0}
.table .num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.table .name-cell{max-width:360px}
.table .name-cell button{background:none;border:0;padding:0;text-align:left;font-weight:600;color:var(--ink);overflow-wrap:anywhere}
.table .name-cell button:hover{color:var(--accent-strong);text-decoration:underline}
.table .qcell{max-width:380px;overflow-wrap:anywhere}
.table .empty td{color:var(--muted);text-align:center;padding:36px}
.tag{display:inline-block;font-size:12px;font-weight:600;padding:2px 9px;border-radius:999px;background:var(--soft);color:var(--accent-strong)}
.tag.fail{background:color-mix(in srgb,var(--danger) 14%,transparent);color:var(--danger)}
.toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap}

.drop{border:2px dashed var(--p3);border-radius:var(--radius);padding:32px;text-align:center;background:color-mix(in srgb,var(--glow) 45%,var(--surface));display:flex;flex-direction:column;gap:4px;cursor:pointer;font-weight:600;transition:border-color .15s,background .15s}
.drop:hover{border-color:var(--accent);background:var(--soft)}
.drop span{color:var(--muted);font-size:13px;font-weight:400}

/* Chat */
.page.chat-page{flex-direction:row;padding:0;gap:0;max-width:none;flex:1;min-height:0;height:calc(100vh - 67px)}
.page > .lead{margin:0}
/* Welcome screen */
body.welcome .topbar{display:none}
body.welcome .page.chat-page{height:100vh}
.hero{flex:1;display:grid;place-items:center;padding:48px 32px;overflow:auto;background:radial-gradient(ellipse 80% 60% at 50% 0%,color-mix(in srgb,var(--glow) 80%,transparent),transparent 70%)}
.hero-inner{max-width:680px;text-align:center;display:flex;flex-direction:column;align-items:center}
.hero-logo{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--p1),var(--p2) 60%,var(--p3));box-shadow:0 10px 30px color-mix(in srgb,var(--p1) 35%,transparent);margin-bottom:22px}
.hero-logo svg{width:32px;height:32px}
.hero h2{font:800 clamp(30px,5vw,44px)/1.1 var(--sans);letter-spacing:-.03em;margin:0 0 14px;display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}
.hero-badge{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:5px 11px;border-radius:999px;background:var(--soft);color:var(--accent-strong);border:1px solid var(--p4)}
.hero-tag{font-size:clamp(16px,2.2vw,19px);line-height:1.55;color:var(--muted);margin:0 0 28px;max-width:56ch}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:12px}
.btn-lg{padding:13px 24px;font-size:15.5px;border-radius:12px}
.hero-points{list-style:none;margin:40px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;text-align:left;width:100%}
.hero-points li{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:4px}
.hero-points b{font-size:14px;color:var(--accent-strong)}
.hero-points span{font-size:13px;color:var(--muted);line-height:1.45}
.chat-col{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0}
.doc-strip{display:flex;align-items:center;gap:8px;padding:12px 32px;border-bottom:1px solid var(--line);background:var(--surface);overflow-x:auto;flex:none}
.strip-label{font-size:12px;font-weight:600;color:var(--muted);white-space:nowrap;margin-right:2px}
.chip{display:inline-flex;align-items:center;gap:2px;max-width:260px;padding:4px 4px 4px 12px;border-radius:999px;background:var(--soft);color:var(--ink);font-size:13px;font-weight:500;flex:none}
.chip-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip-x{border:0;background:none;color:var(--muted);width:22px;height:22px;border-radius:50%;font-size:15px;line-height:1;display:grid;place-items:center}
.chip-x:hover{background:var(--soft-2);color:var(--danger)}
.chip.add{border:1px dashed var(--p3);background:none;color:var(--accent-strong);padding:4px 12px;font-weight:600}
.chip.add:hover{background:var(--soft);border-color:var(--accent)}
.thread{flex:1;overflow:auto;padding:32px 32px}
.thread-inner{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:24px}
.intro h2{font:700 26px/1.25 var(--sans);letter-spacing:-.02em;margin:0 0 8px}
.intro p{margin:0;color:var(--muted);max-width:60ch}
.intro-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:18px}
.intro-actions .hint{max-width:40ch}
.msg.user{align-self:flex-end;background:linear-gradient(135deg,var(--p1),var(--p2));color:#fff;padding:11px 16px;border-radius:18px 18px 4px 18px;max-width:80%;white-space:pre-wrap;overflow-wrap:anywhere;box-shadow:0 4px 14px color-mix(in srgb,var(--p1) 25%,transparent)}
.msg.bot{max-width:72ch;overflow-wrap:anywhere;background:var(--surface);border:1px solid var(--line);border-radius:18px 18px 18px 4px;padding:16px 20px;box-shadow:var(--shadow-sm)}
.answer{font:16.5px/1.7 var(--read)}
.answer p{margin:0 0 .7em}
.answer p:last-child{margin-bottom:0}
.answer ul{margin:0 0 .7em;padding-left:1.2em}
.upload-card{min-width:min(520px,100%)}
.uc-title{font-weight:700;font-size:14px;margin-bottom:14px;overflow-wrap:anywhere}
.uc-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}
.uc{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px;font-size:12.5px;min-width:0;position:relative}
.uc:not(:last-child)::after{content:"";position:absolute;top:14px;left:calc(50% + 20px);right:calc(-50% + 16px);height:2px;border-radius:1px;background:var(--soft-2)}
.uc.done:not(:last-child)::after{background:var(--p2)}
.uc-n{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:12px;background:var(--soft);color:var(--muted);transition:background .2s,color .2s}
.uc b{font-weight:700}
.uc.idle b{color:var(--muted)}
.uc small{font-size:11px;color:var(--muted);line-height:1.3}
.uc.active .uc-n{background:var(--accent);color:var(--accent-ink);animation:pulse 1s ease-in-out infinite}
.uc.done .uc-n{background:linear-gradient(135deg,var(--p1),var(--p2));color:#fff;font-size:0}
.uc.done .uc-n::before{content:"✓";font-size:13px}
.upload-card.done{min-width:0;padding:10px 16px;font-size:14px;display:flex;align-items:center;gap:10px}
.uc-ok{flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:12px;color:#fff;background:linear-gradient(135deg,var(--p1),var(--p2))}
.thinking{color:var(--muted);font:14px var(--sans)}
.err{color:var(--danger);font:14px var(--sans)}
.metrics{font-size:12px;color:var(--muted);margin-top:8px;font-variant-numeric:tabular-nums}
.cite{font:700 11.5px/1 var(--sans);background:var(--mark);color:var(--mark-ink);border:0;border-radius:6px;padding:3px 6px;margin:0 1px;vertical-align:2px;transition:background .15s,color .15s}
.cite:hover{background:var(--accent);color:var(--accent-ink)}
details.hits{margin-top:12px;font-size:13px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg)}
details.hits summary{padding:9px 14px;color:var(--muted);cursor:pointer;font-weight:600}
.hit{box-sizing:border-box;display:grid;grid-template-columns:28px minmax(0,1fr);gap:4px 10px;padding:10px 14px;border:0;border-top:1px solid var(--line);text-align:left;background:none;width:100%}
.hit:hover{background:var(--soft)}
.hit .n{font-weight:700;color:var(--accent-strong)}
.hit .top{display:flex;gap:8px;align-items:center;min-width:0}
.hit .doc{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.hit .score{flex:none;color:var(--muted);font-variant-numeric:tabular-nums}
.bar{grid-column:2;height:5px;background:var(--soft-2);border-radius:3px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--p1),var(--p3))}
.hit .scores{grid-column:2;color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}
.snip{grid-column:2;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.composer{border-top:1px solid var(--line);background:color-mix(in srgb,var(--bg) 80%,var(--surface));padding:14px 32px 16px}
.composer-inner{max-width:760px;margin:0 auto;display:flex;gap:8px;align-items:flex-end;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:6px;box-shadow:var(--shadow);transition:border-color .15s,box-shadow .15s}
.composer-inner:focus-within{border-color:var(--p2);box-shadow:0 0 0 4px var(--ring)}
.composer textarea{flex:1;resize:none;border:0;border-radius:10px;padding:10px 12px;background:transparent;max-height:180px;min-height:44px;outline:none}
.composer .btn{min-height:40px;border-radius:11px}
.attach{flex:none;width:40px;height:40px;border:0;border-radius:11px;background:none;color:var(--muted);display:grid;place-items:center;transition:background .15s,color .15s}
.attach svg{width:20px;height:20px}
.attach:hover{background:var(--soft);color:var(--accent-strong)}
.attach:disabled{opacity:.4;cursor:default}
.status{max-width:760px;margin:8px auto 0;color:var(--muted);font-size:12px;min-height:1em}
.source{width:390px;flex:none;border-left:1px solid var(--line);background:var(--surface);padding:20px 22px;overflow:auto}
.source-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:12px}
.source-head strong{font-size:13px;overflow-wrap:anywhere}
.source-body{font:15px/1.65 var(--read);white-space:pre-wrap;overflow-wrap:anywhere}
.source-body mark{background:var(--mark);color:var(--mark-ink);padding:1px 2px;border-radius:3px}

/* Retrieval lab */
.lab-bar{display:flex;gap:8px;margin-bottom:10px}
.lab-bar input{flex:1;border:1px solid var(--line);border-radius:10px;padding:10px 14px;background:var(--bg);min-width:0;transition:border-color .15s,box-shadow .15s}
.lab-bar input:focus{outline:none;border-color:var(--p2);box-shadow:0 0 0 4px var(--ring)}
.lab-col h3{font-size:14px;font-weight:700;margin:0 0 2px}
.lab-col .hint{margin:0 0 12px}
.lab-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.lab-item{border:1px solid var(--line);border-radius:var(--radius-sm);padding:11px 13px;font-size:13px;background:var(--surface)}
.lab-item.sent{border-color:var(--p2);background:color-mix(in srgb,var(--glow) 40%,var(--surface));box-shadow:inset 3px 0 0 var(--accent)}
.lab-item .top{display:flex;gap:8px;align-items:baseline}
.lab-item .rk{font-weight:700;color:var(--accent-strong);width:20px}
.lab-item .doc{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.lab-item .sc{color:var(--muted);font-variant-numeric:tabular-nums}
.lab-item .snip{color:var(--muted);margin-top:4px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.both{font-size:11px;font-weight:700;background:var(--mark);color:var(--mark-ink);padding:1px 7px;border-radius:999px}

/* Settings */
.settings{max-width:700px;display:flex;flex-direction:column;gap:12px}
.settings h2{font:700 15px/1.3 var(--sans);margin-top:8px}
.field{display:grid;grid-template-columns:220px 1fr 56px;align-items:center;gap:12px;font-size:14px}
.field output{text-align:right;font-variant-numeric:tabular-nums;font-weight:600;color:var(--accent-strong)}
.field input[type=range]{accent-color:var(--accent)}
.kv{display:grid;grid-template-columns:180px 1fr;gap:8px 12px;margin:0;font-size:14px}
.kv dt{color:var(--muted)} .kv dd{margin:0;overflow-wrap:anywhere;font-weight:500}

/* Drawer */
.drawer{position:fixed;inset:0;background:rgba(12,16,48,.45);backdrop-filter:blur(3px);z-index:20;display:flex;justify-content:flex-end}
.drawer-panel{width:min(720px,100%);height:100%;background:var(--surface);padding:calc(22px + env(safe-area-inset-top,0px)) 26px calc(22px + env(safe-area-inset-bottom,0px));overflow:auto;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow-lg)}
.drawer-head{display:flex;justify-content:space-between;gap:12px}
.drawer-head h2{font:700 20px/1.3 var(--sans);letter-spacing:-.01em;overflow-wrap:anywhere}
.chunkmap{font:14.5px/1.65 var(--read);white-space:pre-wrap;overflow-wrap:anywhere}
.chunkmap span{border-radius:3px;padding:1px 0}
.chunkmap span:nth-child(odd){background:var(--soft)}
.chunkmap sup{font:700 10px var(--sans);color:var(--accent-strong);margin-right:3px}

dialog{border:1px solid var(--line);border-radius:18px;padding:0;background:var(--surface);color:var(--ink);width:min(560px,92vw);box-shadow:var(--shadow-lg)}
dialog::backdrop{background:rgba(12,16,48,.45);backdrop-filter:blur(3px)}
.paste{display:flex;flex-direction:column;gap:12px;padding:24px}
.paste h2{font:700 18px/1.3 var(--sans)}
.paste input,.paste textarea{border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:var(--bg)}
.paste input:focus,.paste textarea:focus{outline:none;border-color:var(--p2);box-shadow:0 0 0 4px var(--ring)}
.paste textarea{min-height:200px;resize:vertical}
.paste .row{justify-content:flex-end}

.dropzone-overlay{position:fixed;inset:0;z-index:30;background:color-mix(in srgb,var(--p1) 18%,transparent);backdrop-filter:blur(2px);display:grid;place-items:center;pointer-events:none}
.dropzone-overlay div{background:var(--surface);border:2px dashed var(--accent);border-radius:18px;padding:30px 44px;font-weight:700;box-shadow:var(--shadow-lg)}
.toast{position:fixed;left:50%;top:calc(80px + env(safe-area-inset-top,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:11px 18px;border-radius:12px;font-size:14px;font-weight:500;z-index:40;max-width:min(560px,92vw);box-shadow:var(--shadow-lg)}

/* Responsive */
@media (max-width:1100px){ .stats{grid-template-columns:repeat(3,minmax(0,1fr))} .stat:nth-child(4){border-left:0} .stat:nth-child(n+4){border-top:1px solid var(--line)} .grid-3{grid-template-columns:1fr} .source{width:320px} }
@media (max-width:860px){
  .shell{grid-template-columns:1fr;grid-template-rows:auto 1fr}
  .side{flex-direction:row;align-items:center;padding:8px 12px;gap:4px;border-right:0;border-bottom:1px solid var(--line);overflow-x:auto;background:var(--surface)}
  .brand span:last-child,.side-foot,.side .count,.nav-label{display:none}
  .doc-strip{padding:10px 16px}
  .brand{padding:0 6px 0 0}
  .logo{width:32px;height:32px;border-radius:9px}
  .side a{padding:7px 12px;font-size:13px;white-space:nowrap;border-radius:999px}
  .side a svg{display:none}
  .topbar{padding:12px 16px}
  .topbar h1{font-size:19px}
  .page{padding:16px}
  .grid-2{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{border-left:0!important;border-top:1px solid var(--line)}
  .stat:nth-child(-n+2){border-top:0}
  .stat:nth-child(even){border-left:1px solid var(--line)!important}
  .stat:nth-child(5){grid-column:1/-1}
  .page.chat-page{height:calc(100vh - 116px)}
  .source{position:fixed;inset:auto 0 0 0;width:auto;max-height:60vh;border-left:0;border-top:1px solid var(--line);border-radius:18px 18px 0 0;z-index:15;box-shadow:var(--shadow-lg)}
  .thread{padding:20px 16px} .composer{padding:10px 12px}
  .msg.bot{padding:14px 16px}
  body.welcome .page.chat-page{height:calc(100vh - 52px)}
  .hero{padding:32px 16px}
  .hero-points{grid-template-columns:1fr;margin-top:28px}
  .uc small{display:none}
  .uc b{font-size:11px}
  .field{grid-template-columns:1fr 48px} .field span{grid-column:1/-1}
  .kv{grid-template-columns:1fr}
}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}