/* QEV Decision Models demo UI.
   Layout: 상단 소개 → 모델 매트릭스 → 입력 | 실행 | 결과 작업대 → 측정 결과 표 → 알아둘 점. 식별자·수치는 mono. */
:root{
  --bg:#f3f5f8; --surface:#ffffff; --sunken:#eef1f6; --ink:#0f1b2d; --muted:#5a6a7f; --faint:#8a98ab;
  --line:#dde3ec; --line-strong:#c5cfdc;
  --accent:#2354d4; --accent-ink:#ffffff; --accent-soft:#e7edfc; --accent-line:#a9bdf0;
  --brand:#0f1f38; --brand-ink:#e8eef8; --brand-muted:#9fb1ca;
  --ok:#11795a; --ok-soft:#e3f4ed; --bad:#bf3f2b; --bad-soft:#fbe9e5; --dlp:#7a4bc9; --dlp-soft:#f0eafb;
  --bar:#e3e8f0; --warn:#b7791f;
  --f-display:var(--f-body);
  --f-body:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,system-ui,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  --f-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --r:10px; --r-sm:7px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0b121d; --surface:#121b28; --sunken:#0e1622; --ink:#e5ecf6; --muted:#97a6ba; --faint:#6d7d92;
  --line:#223044; --line-strong:#33445c;
  --accent:#7aa0ff; --accent-ink:#0b121d; --accent-soft:#18284a; --accent-line:#34508f;
  --brand:#0a1626; --brand-ink:#e5ecf6; --brand-muted:#8ea2bd;
  --ok:#53c89c; --ok-soft:#0f2a22; --bad:#ff8c74; --bad-soft:#33191496; --dlp:#b996f5; --dlp-soft:#241a3a;
  --bar:#1f2b3c; --warn:#e6b45a; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0b121d; --surface:#121b28; --sunken:#0e1622; --ink:#e5ecf6; --muted:#97a6ba; --faint:#6d7d92;
  --line:#223044; --line-strong:#33445c;
  --accent:#7aa0ff; --accent-ink:#0b121d; --accent-soft:#18284a; --accent-line:#34508f;
  --brand:#0a1626; --brand-ink:#e5ecf6; --brand-muted:#8ea2bd;
  --ok:#53c89c; --ok-soft:#0f2a22; --bad:#ff8c74; --bad-soft:#33191496; --dlp:#b996f5; --dlp-soft:#241a3a;
  --bar:#1f2b3c; --warn:#e6b45a; color-scheme:dark}

*{box-sizing:border-box}
html:lang(ja){--f-body:"Pretendard JP Variable","Pretendard JP","Pretendard Variable",-apple-system,system-ui,"Hiragino Sans",sans-serif}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;font-variant-numeric:tabular-nums;word-break:keep-all;overflow-wrap:break-word}
.wrap{max-width:1240px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{text-wrap:balance;margin:0}
button,select,textarea,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}

/* server status */
.health{color:var(--ink)}
.health .dot{background:var(--faint)}
.health.ok .dot{background:var(--ok)}
.health.wait .dot{background:var(--warn);animation:pulse 1s infinite}
.health.down{color:var(--bad)} .health.down .dot{background:var(--bad)}
/* top bar */
.top{background:var(--brand);color:var(--brand-ink)}
.top .wrap{display:flex;align-items:center;gap:10px 16px;padding-block:14px;flex-wrap:wrap}
.logo>span{font-weight:600}
.logo{font-family:var(--f-display);font-weight:700;font-size:19px;letter-spacing:-.01em;display:flex;align-items:baseline;gap:8px;white-space:nowrap}
.top nav{margin-left:auto;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.top nav a{color:var(--brand-muted);text-decoration:none;font-size:13.5px;padding:6px 10px;border-radius:6px}
.top nav a:hover{color:var(--brand-ink);background:#ffffff14}
.lang{display:inline-flex;border:1px solid #ffffff2a;border-radius:7px;overflow:hidden}
.lang button{background:none;border:0;color:var(--brand-muted);padding:5px 10px;font-size:12.5px;cursor:pointer}
.lang button[aria-pressed="true"]{background:#ffffff1f;color:var(--brand-ink)}

/* hero */
.hero{background:var(--brand);color:var(--brand-ink);padding-bottom:30px}
.hero .wrap{padding-top:18px}
.hero h1{font-family:var(--f-body);font-weight:700;font-size:clamp(22px,2.6vw,30px);line-height:1.35;letter-spacing:-.02em;max-width:30em}
.hero h1 span{display:inline-block} /* keep each phrase on one line */
.hero p{color:var(--brand-muted);margin:10px 0 0;text-wrap:pretty}

/* sections */
section.block{padding-block:28px}
.sec-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.sec-head h2{font-size:19px;font-weight:700;letter-spacing:-.01em}
.sec-head .aside{color:var(--muted);font-size:13.5px}
.sec-head .right{margin-left:auto}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:99px;padding:3px 10px;white-space:nowrap}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ok);flex:none}

/* model matrix */
.matrix{display:grid;grid-template-columns:120px repeat(2,minmax(0,1fr));gap:10px;align-items:stretch}
.matrix .colh{font-size:13px;font-weight:600;color:var(--muted);padding:0 4px 2px;display:flex;align-items:center;gap:8px}
.matrix .rowh{display:flex;flex-direction:column;justify-content:center;gap:2px;padding-right:6px}
.matrix .rowh b{font-family:var(--f-display);font-size:18px}
.matrix .rowh span{font-size:12px;color:var(--muted)}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.model{position:relative;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:12px 13px;cursor:pointer;display:grid;gap:9px;transition:border-color .15s,box-shadow .15s}
.model:hover{border-color:var(--line-strong)}
.model[aria-pressed="true"]{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset;background:var(--accent-soft)}
.model .name{font-size:12.5px;font-weight:600;display:flex;align-items:center;gap:8px;justify-content:space-between}
.model .check{width:18px;height:18px;border-radius:5px;border:1.5px solid var(--line-strong);display:grid;place-items:center;flex:none;color:var(--accent-ink);font-size:12px}
.model[aria-pressed="true"] .check{background:var(--accent);border-color:var(--accent)}
.model:not(.multi) .check{border-radius:50%}
.model .size{font-family:var(--f-display);font-size:24px;font-weight:700;line-height:1}
.model .stats{display:grid;gap:5px;font-size:11.5px;color:var(--muted)}
.stat{display:grid;grid-template-columns:62px 1fr 48px;gap:8px;align-items:center}
.stat .bar{height:5px}
.stat .v{text-align:right;color:var(--ink)}
.bar{background:var(--bar);border-radius:99px;overflow:hidden;height:8px}
.bar i{display:block;height:100%;background:var(--accent);border-radius:99px}
.bar.dlp i{background:var(--dlp)}
.tag{display:inline-flex;align-items:center;font-size:11px;font-weight:600;border-radius:5px;padding:1px 7px;line-height:1.6;white-space:nowrap}
.tag.dlp{background:var(--dlp-soft);color:var(--dlp)}
.tag.gen{background:var(--sunken);color:var(--muted)}
.model-foot{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:12px;font-size:13px;color:var(--muted)}
.switch{display:inline-flex;align-items:center;gap:9px;cursor:pointer;color:var(--ink);font-weight:500}
.switch input{appearance:none;width:34px;height:20px;border-radius:99px;background:var(--line-strong);position:relative;cursor:pointer;margin:0;transition:background .15s}
.switch input::after{content:"";position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:var(--surface);transition:transform .15s}
.switch input:checked{background:var(--accent)}
.switch input:checked::after{transform:translateX(14px)}

/* workbench */
.bench{display:grid;grid-template-columns:minmax(0,1fr) 64px minmax(0,1fr);gap:0;align-items:start}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;min-width:0}
.panel-h{display:flex;align-items:center;gap:10px;padding:14px 18px;border-bottom:1px solid var(--line)}
.panel-h h3{font-size:15px;font-weight:700}
.panel-h .sub{color:var(--muted);font-size:12.5px}
.panel-h .right{margin-left:auto}
.panel-b{padding:16px 18px;display:grid;gap:16px}
.seg{display:inline-flex;background:var(--sunken);border:1px solid var(--line);border-radius:9px;padding:3px;gap:2px}
.seg button{border:0;background:none;padding:6px 13px;border-radius:7px;font-size:13.5px;cursor:pointer;color:var(--muted);font-weight:500}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px #0f1b2d1f}
.field{display:grid;gap:7px;min-width:0}
.label{font-size:12.5px;font-weight:600;display:flex;align-items:center;gap:8px}
.label .hint{font-weight:400;color:var(--muted)}
.label .right{margin-left:auto}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{border:1px solid var(--line);background:var(--surface);border-radius:99px;padding:4px 11px;font-size:13px;cursor:pointer;display:inline-flex;gap:6px;align-items:center}
.chip:hover{border-color:var(--line-strong)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--bg)}
.chip .n{font-size:11px;opacity:.65}
.samples{display:grid;gap:6px;max-height:248px;overflow:auto;padding:2px;margin:-2px}
.sample{display:grid;grid-template-columns:auto minmax(0,1fr);gap:4px 10px;text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:var(--r-sm);padding:9px 11px;cursor:pointer}
.sample:hover{border-color:var(--line-strong)}
.sample[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft)}
.sample .id{font-size:11.5px;color:var(--muted);grid-row:span 2;padding-top:2px;white-space:nowrap}
.sample .q{font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sample .types{display:flex;gap:5px}
.ttag{font-size:11px;border-radius:4px;padding:0 6px;background:var(--sunken);color:var(--muted);border:1px solid var(--line)}
textarea{width:100%;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);padding:11px 12px;line-height:1.65;resize:vertical;font-size:14px}
textarea[readonly]{background:var(--sunken);color:var(--ink)}
.counter{font-size:11.5px;color:var(--muted)}
.counter.over{color:var(--bad)}
.qcard{border:1px solid var(--line);border-radius:var(--r-sm);padding:11px 13px;display:grid;gap:8px;background:var(--surface)}
.qcard .qh{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--muted)}
.qcard .qh b{color:var(--ink)}
.qcard .qt{font-weight:600;font-size:14px}
.opts{display:grid;gap:4px;margin:0;padding:0;list-style:none}
.opts li{display:grid;grid-template-columns:minmax(64px,auto) 1fr auto;gap:10px;font-size:13px;padding:4px 8px;border-radius:5px;background:var(--sunken)}
.opts li .k{color:var(--muted)}
.opts li .ref{font-size:11px;font-weight:600;color:var(--ok)}
.linkbtn{background:none;border:0;color:var(--accent);font-size:12.5px;cursor:pointer;padding:0;font-weight:500}
.linkbtn:hover{text-decoration:underline}
.optrow{display:grid;grid-template-columns:120px minmax(0,1fr) 32px;gap:6px}
.optrow input{border:1px solid var(--line);border-radius:var(--r-sm);padding:7px 10px;background:var(--surface);font-size:13.5px;min-width:0}
.optrow input.k{font-family:var(--f-mono);font-size:12.5px}
.optrow input:disabled{background:var(--sunken);color:var(--muted)}
.icon-btn{border:1px solid var(--line);background:var(--surface);border-radius:var(--r-sm);cursor:pointer;color:var(--muted)}
.add{justify-self:start;border:1px dashed var(--line-strong);background:none;border-radius:var(--r-sm);padding:5px 12px;font-size:13px;color:var(--muted);cursor:pointer}
pre.json{margin:0;background:var(--sunken);border:1px solid var(--line);border-radius:var(--r-sm);padding:10px 12px;font-family:var(--f-mono);font-size:12px;overflow:auto;max-height:260px}

.rail{position:sticky;top:calc(env(safe-area-inset-top,0px) + 16px);display:flex;flex-direction:column;align-items:center;gap:8px;padding-top:120px}
.go{width:48px;height:48px;border-radius:50%;border:0;background:var(--accent);color:var(--accent-ink);cursor:pointer;display:grid;place-items:center;box-shadow:0 6px 16px #2354d43d;transition:transform .12s}
.go:hover{transform:translateX(2px)}
.go:disabled{opacity:.5;cursor:progress;transform:none}
.go svg{width:20px;height:20px}
.rail .lbl{font-size:11.5px;color:var(--muted);text-align:center;line-height:1.35}
.rail kbd{font-size:10.5px;border:1px solid var(--line);border-radius:4px;padding:0 4px;background:var(--surface)}
.run-mobile{display:none}

/* results */
.steps{display:flex;gap:6px;flex-wrap:wrap;font-size:12px}
.step{display:inline-flex;align-items:center;gap:6px;color:var(--faint)}
.step i{width:8px;height:8px;border-radius:50%;border:1.5px solid currentColor}
.step.done{color:var(--ok)} .step.done i{background:currentColor}
.step.now{color:var(--accent);font-weight:600} .step.now i{background:currentColor;animation:pulse 1s infinite}
.step+.step::before{content:"";width:14px;height:1px;background:var(--line-strong);margin-right:2px}
@keyframes pulse{50%{opacity:.35}}
@media (prefers-reduced-motion:reduce){.step.now i{animation:none}.go,.model,.switch input,.switch input::after{transition:none}}
.empty{display:grid;place-items:center;text-align:center;gap:8px;padding:56px 12px;color:var(--muted)}
.empty svg{width:46px;height:46px;color:var(--line-strong)}
.empty b{color:var(--ink);font-weight:600}
.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.metric{background:var(--sunken);border-radius:var(--r-sm);padding:9px 11px}
.metric b{display:block;font-size:17px;font-weight:600}
.metric span{font-size:11.5px;color:var(--muted)}
.ans{border:1px solid var(--line);border-radius:var(--r);padding:14px;display:grid;gap:11px}
.ans .qh{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--muted);flex-wrap:wrap}
.ans .qh b{color:var(--ink)}
.ans .pick{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.ans .pick .k{font-size:21px;font-weight:600}
.ans .pick .d{font-size:14px;color:var(--muted)}
.ans .pick .conf{margin-left:auto;font-size:13px}
.verdict{font-size:12px;font-weight:600;border-radius:5px;padding:2px 8px}
.verdict.ok{background:var(--ok-soft);color:var(--ok)}
.verdict.bad{background:var(--bad-soft);color:var(--bad)}
.verdict.none{background:var(--sunken);color:var(--muted);font-weight:500}
.probs{display:grid;gap:6px}
.prob{display:grid;grid-template-columns:minmax(70px,auto) minmax(0,1fr) 62px;gap:10px;align-items:center;font-size:12.5px}
.prob .k{color:var(--muted);display:flex;gap:6px;align-items:center;white-space:nowrap}
.prob .v{text-align:right}
.prob .bar i{background:var(--line-strong)}
.prob.sel .k{color:var(--ink);font-weight:600}
.prob.sel .bar i{background:var(--accent)}
.prob .reft{font-family:var(--f-body);font-size:10.5px;font-weight:600;color:var(--ok)}
details.raw summary{cursor:pointer;font-size:13px;color:var(--muted)}
details.raw pre{margin-top:8px;max-height:320px}
.cmp{width:100%;border-collapse:collapse;font-size:13px}
.cmp th,.cmp td{text-align:left;padding:7px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
.cmp th{font-size:11.5px;color:var(--muted);font-weight:600}
.cmp td.m{font-size:12px;white-space:nowrap}
.cmp td.v{white-space:nowrap}
.scroll-x{overflow-x:auto}
.result-model{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px}
.result-model b{}

/* benchmarks */
table.perf{width:100%;border-collapse:collapse;font-size:13.5px;background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.perf th,.perf td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left}
.perf tr:last-child td{border-bottom:0}
.perf th{font-size:12px;color:var(--muted);font-weight:600;background:var(--sunken)}
.perf td.m{font-size:12.5px;white-space:nowrap}
.perf td.c{min-width:170px}
.perf .cell{display:grid;grid-template-columns:52px 1fr;gap:10px;align-items:center;font-size:12.5px}
.perf tr.best td{background:var(--accent-soft)}

.types-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.tcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;display:flex;flex-direction:column;gap:6px;font-size:13.5px}
.tcard .ex{margin-top:auto}
.tcard h3{font-size:15px;display:flex;gap:8px;align-items:baseline}
.tcard h3 code{font-size:11.5px;color:var(--muted);font-weight:500}
.tcard p{margin:0;color:var(--muted)}
.tcard .ex{font-size:12px;background:var(--sunken);border-radius:5px;padding:6px 9px;color:var(--ink)}

.limits{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 28px;margin:0;padding:0;list-style:none;font-size:13.5px}
.limits li{display:grid;gap:2px;padding:12px 0;border-top:1px solid var(--line)}
.limits b{font-weight:600}
.limits span{color:var(--muted)}
footer{padding-block:26px 40px;color:var(--faint);font-size:12.5px;border-top:1px solid var(--line);margin-top:12px}
footer .wrap{display:flex;gap:16px;flex-wrap:wrap}

.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:9px 16px;border-radius:9px;font-size:13.5px;box-shadow:0 8px 24px #0004;z-index:20}

@media (max-width:960px){
  .matrix{grid-template-columns:1fr}
  .matrix .colh{display:none}
  .matrix .rowh{flex-direction:row;align-items:baseline;gap:10px;padding-top:6px}
  .pair{grid-template-columns:1fr 1fr}
  .bench{grid-template-columns:minmax(0,1fr);gap:14px}
  .rail{display:none}
  .run-mobile{display:flex;position:sticky;bottom:calc(10px + env(safe-area-inset-bottom,0px));z-index:5}
  .run-mobile button{width:100%;border:0;border-radius:11px;background:var(--accent);color:var(--accent-ink);font-weight:600;padding:13px;font-size:15px;cursor:pointer;box-shadow:0 8px 20px #2354d44d}
  .types-grid{grid-template-columns:1fr}
  .limits{grid-template-columns:1fr}
}
@media (max-width:520px){
  .model{padding:10px}
  .model .name{font-size:11px}
  .model .size{font-size:20px}
  .stat{grid-template-columns:28px 1fr 40px;gap:6px}
  .stat .lab-l{display:none}
  .top nav a{display:none}
  .hero h1{font-size:21px}
  .logo small{display:none}
  .metrics{grid-template-columns:1fr 1fr 1fr}
  .optrow{grid-template-columns:90px minmax(0,1fr) 32px}
}

/* additions for the live UI */
[hidden]{display:none!important}
img{max-width:100%}
.stack{display:grid;gap:10px}
.flat{margin:0}
.bench-sec{padding-top:4px}
#toDirect{justify-self:start}
.qcard textarea{font-size:13.5px}
.qcard .seg button{padding:4px 10px;font-size:12.5px}
.qcard .label{font-weight:500;color:var(--muted)}
.loading{color:var(--muted);font-size:13.5px;padding:14px 0}
.errbox{border:1px solid var(--bad);background:var(--bad-soft);border-radius:var(--r);padding:14px;display:grid;gap:6px;font-size:13.5px}
.errbox b{color:var(--bad)}
.errbox code{font-family:var(--f-mono);font-size:12px;color:var(--muted);overflow-wrap:break-word}
.cmp td.bad{color:var(--bad);font-size:12.5px}
.result-model{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.result-model b{color:var(--ink)}
@media (prefers-reduced-motion:reduce){.health.wait .dot{animation:none}}

/* Japanese has no spaces; break between phrases where the browser supports it */
html:lang(ja) body{word-break:auto-phrase}
/* states and helpers used by app.js */
#inputPanel[inert]{opacity:.6}
.push{margin-left:auto}
.stack.tight{gap:6px}
.empty-mark{font-size:28px;color:var(--line-strong)}
.cmp .desc{color:var(--muted);font-family:var(--f-body)}
.ref-note{font-size:12px;color:var(--muted);margin-left:8px}
.perf .cell .num{color:var(--muted)}
.perf .cell .num.best{font-weight:600;color:var(--ink)}