:root{--bg:#0d1420;--glass:rgba(22,30,44,.86);--glass2:rgba(40,50,68,.72);--line:rgba(255,255,255,.1);--text:#f2f6fc;--soft:#cdd8e8;--muted:#93a3ba;--blue:#1e7bff;--blue2:#4c9dff;--gold:#ffd24a;--good:#8fdc6a;--bad:#ff8a6b;--r:12px}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font:14px/1.4 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-text-size-adjust:100%;overflow:hidden}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
button:focus-visible,input:focus-visible,summary:focus-visible,select:focus-visible,#gl:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
svg.i{width:22px;height:22px;flex:none;fill:currentColor}
svg.i.l{fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
#app{position:relative;height:100vh;height:100dvh;overflow:hidden}
body.embed-mode #app{height:100vh;height:100dvh}
#stage{position:absolute;inset:0;overflow:hidden;background:#1a2b4a}
#gl{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;outline:none}
#ui{position:absolute;inset:0;pointer-events:none}
#ui>*{pointer-events:auto}
.glass{background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 28px rgba(0,0,0,.35)}
/* title card */
#title{position:absolute;left:14px;top:12px;width:392px;display:flex;align-items:center;gap:12px;padding:10px 16px 8px 12px;pointer-events:none}
#title svg.logo{width:92px;height:80px;flex:none}
#title h1{margin:0;font-size:36px;line-height:.98;letter-spacing:.01em;font-weight:800;text-shadow:0 2px 6px rgba(0,0,0,.4)}
#title h1 b{color:var(--blue2);font-weight:800}
#title p{margin:4px 0 0;font-size:10.5px;letter-spacing:.3em;color:var(--soft);font-weight:600;text-transform:uppercase}
/* left menu */
#menu{position:absolute;left:14px;top:112px;width:236px;padding:8px;display:flex;flex-direction:column;gap:3px}
#menu button{display:flex;align-items:center;gap:13px;padding:0 14px;height:44px;border-radius:9px;text-align:left;font-size:15.5px;color:var(--text);background:rgba(255,255,255,.045)}
#menu button:hover{background:rgba(255,255,255,.1)}
#menu button.on{background:rgba(76,157,255,.22);box-shadow:inset 0 0 0 1.5px var(--blue2)}
#menu button.start{background:linear-gradient(180deg,#2a86ff,#1368e6);height:50px;font-weight:600;font-size:16.5px;margin-bottom:3px;box-shadow:0 4px 14px rgba(30,123,255,.45)}
#menu button.start[aria-pressed=true]{background:linear-gradient(180deg,#e8913a,#c2701c)}
#drawer{position:absolute;left:262px;top:112px;width:300px;max-height:calc(100% - 330px);overflow:auto;padding:12px 14px 14px}
#drawer[hidden]{display:none}
#drawer h2{margin:0 0 6px;font-size:16px;display:flex;justify-content:space-between;align-items:center}
#drawer h2 button{width:32px;height:32px;border-radius:8px;background:rgba(255,255,255,.08);font-size:18px;line-height:1}
#drawer .note{color:var(--muted);font-size:12px;margin:4px 0 8px}
.opt{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0}
.chip{padding:7px 11px;border-radius:9px;background:rgba(255,255,255,.07);border:1px solid var(--line);min-height:36px;font-size:13px}
.chip:hover{border-color:var(--blue2)}
.chip[aria-pressed=true],.chip.on{background:rgba(76,157,255,.28);border-color:var(--blue2)}
.chk{display:flex;gap:8px;align-items:center;margin:7px 0;font-size:13px;color:var(--soft)}
.chk input{width:18px;height:18px;accent-color:var(--blue2)}
.kv{display:grid;grid-template-columns:1fr auto;gap:2px 10px;font-size:12.5px;color:var(--soft);margin:6px 0}
.kv b{color:var(--gold);font-variant-numeric:tabular-nums;font-weight:700}
/* sliders */
.sl{display:grid;grid-template-columns:1fr auto;gap:0 8px;align-items:center;margin:7px 0}
.sl label{font-size:12.8px;color:var(--soft)}
.sl output{font-weight:600;font-size:13px;font-variant-numeric:tabular-nums;color:#fff}
input[type=range]{-webkit-appearance:none;appearance:none;grid-column:1/3;width:100%;height:24px;background:transparent;margin:0}
input[type=range]::-webkit-slider-runnable-track{height:8px;border-radius:5px;background:linear-gradient(90deg,var(--blue2) var(--p,50%),rgba(255,255,255,.14) var(--p,50%))}
input[type=range]::-moz-range-track{height:8px;border-radius:5px;background:rgba(255,255,255,.14)}
input[type=range]::-moz-range-progress{height:8px;border-radius:5px;background:var(--blue2)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:#4fa6ff;border:2px solid #fff;margin-top:-6px;box-shadow:0 1px 5px rgba(0,0,0,.5)}
input[type=range]::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:#4fa6ff;border:2px solid #fff}
/* right panels */
#rcol{position:absolute;right:14px;top:14px;width:368px;display:flex;flex-direction:column;gap:10px}
#controls{padding:12px 18px 6px}
#controls h2,#tools h2{margin:0 0 5px;font-size:17px;font-weight:700}
.crow{display:grid;grid-template-columns:50px 1fr;gap:10px;align-items:center;margin:0 0 5px;padding:0}
.crow .ic{width:48px;height:42px;border-radius:10px;background:rgba(255,255,255,.07);display:grid;place-items:center;color:#e8f0ff}
.crow .ic svg{width:27px;height:27px}
.crow .sl{margin:0}
.crow .sl label{font-size:14.5px;color:#fff}
.crow .sl output{font-size:14.5px}
#tools{padding:10px 14px 10px}
#toolgrid{display:grid;grid-template-columns:1fr 1fr;gap:6px}
#toolgrid button{display:flex;align-items:center;gap:11px;padding:0 12px;height:44px;border-radius:9px;background:rgba(255,255,255,.07);border:1px solid var(--line);text-align:left;font-size:14.5px}
#toolgrid button:hover{border-color:var(--blue2)}
#toolgrid button.on{background:linear-gradient(180deg,#2a86ff,#1368e6);border-color:#6fb0ff}
#brushrow{margin-top:6px}
/* scenario cards */
#scenes{position:absolute;left:14px;right:14px;bottom:10px;height:158px;padding:8px;display:grid;grid-template-columns:repeat(7,1fr);gap:8px}
#scenes button{position:relative;border-radius:12px;overflow:hidden;background:#1b2536;border:2px solid transparent;display:flex;flex-direction:column;text-align:center;padding:0}
#scenes button:hover{border-color:rgba(76,157,255,.55)}
#scenes button.on{border-color:#2f8cff;box-shadow:0 0 0 2px rgba(47,140,255,.35),0 0 18px rgba(47,140,255,.5)}
#scenes img{width:100%;flex:1;min-height:0;object-fit:cover;display:block;background:#243249}
#scenes span{display:block;padding:6px 4px 7px;font-size:14.5px;background:rgba(10,16,28,.8);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#scenes .plus{flex:1;display:grid;place-items:center;background:radial-gradient(circle at 50% 40%,#3a4660,#19212f)}
#scenes .plus i{width:58px;height:58px;border-radius:50%;border:3px solid #dfe8f7;display:grid;place-items:center;font-style:normal;font-size:40px;line-height:1;font-weight:300}
/* stats */
#statbar{position:absolute;left:424px;right:398px;top:14px;display:flex;flex-direction:column;gap:6px;pointer-events:none}
#statbar .pills{display:flex;flex-wrap:wrap;gap:6px}
.pill{background:rgba(14,20,32,.78);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:999px;padding:4px 11px;font-size:12.5px;display:flex;gap:6px;align-items:baseline;white-space:nowrap}
.pill b{font-variant-numeric:tabular-nums;color:#fff}
.pill span{color:var(--muted)}
.bar{width:64px;height:7px;border-radius:5px;background:rgba(255,255,255,.16);overflow:hidden;align-self:center}
.bar i{display:block;height:100%;background:linear-gradient(90deg,#4fa6ff,#8fdc6a);width:0}
#goal{background:rgba(14,20,32,.78);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:12px;padding:6px 11px;font-size:12.5px;color:var(--soft);display:flex;flex-direction:column;gap:4px}
#goal .bar{width:100%;height:8px}
#goal.done{border-color:var(--good)}
#toast{position:absolute;left:50%;top:34%;transform:translate(-50%,-50%);background:rgba(20,40,24,.92);border:2px solid var(--good);border-radius:16px;padding:14px 24px;font-size:20px;font-weight:700;text-align:center;pointer-events:none;opacity:0;transition:opacity .5s}
#toast.show{opacity:1}
#hint{position:absolute;left:50%;transform:translateX(-50%);bottom:182px;background:rgba(14,20,32,.72);padding:5px 12px;border-radius:999px;font-size:12.5px;color:var(--soft);pointer-events:none;white-space:nowrap;max-width:90%;overflow:hidden;text-overflow:ellipsis}
#helpBtn{position:absolute;left:272px;bottom:182px;width:42px;height:42px;border-radius:50%;background:var(--glass);border:1px solid var(--line);font-weight:700;font-size:18px;display:grid;place-items:center}
#camBtn{position:absolute;left:222px;bottom:182px;width:42px;height:42px;border-radius:50%;background:var(--glass);border:1px solid var(--line);display:grid;place-items:center}
#camBtn[aria-pressed=true]{background:var(--blue);border-color:#8fc0ff}
#load{position:absolute;inset:0;display:grid;place-items:center;background:#16233a;z-index:30;font-size:16px;color:var(--soft)}
#err{display:none;position:absolute;inset:0;place-items:center;background:#16233a;z-index:31;text-align:center;padding:20px}
/* science dialog */
#sci{position:absolute;inset:0;z-index:20;background:rgba(6,10,18,.8);display:none;overflow:auto;padding:18px}
#sci.open{display:block}
#sci .box{max-width:880px;margin:0 auto;background:#141d2c;border:1px solid var(--line);border-radius:16px;padding:16px 20px 24px}
#sci h2{margin:0 0 4px;font-size:20px}
#sci h3{margin:16px 0 4px;font-size:15px;color:var(--blue2)}
#sci p,#sci li{color:var(--soft);font-size:13.4px;margin:5px 0}
#sci .x{float:right;width:38px;height:38px;border-radius:9px;background:rgba(255,255,255,.1);font-size:20px}
#sci canvas.chart{width:100%;height:150px;background:#0e1520;border:1px solid var(--line);border-radius:10px;display:block;margin:6px 0}
#sci details{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:10px;padding:6px 12px;margin:10px 0}
#sci summary{cursor:pointer;font-weight:700;padding:4px 0}
#sci table{width:100%;border-collapse:collapse;font-size:12.4px;margin:6px 0}
#sci td{padding:3px 5px;border-bottom:1px solid var(--line);color:var(--soft)}
#sci td.ok{color:var(--good);font-weight:700}#sci td.no{color:var(--bad);font-weight:700}
#sci .btn2{background:var(--blue);border-radius:10px;padding:9px 14px;font-weight:600;margin:4px 6px 4px 0}
code{background:#0e1520;padding:1px 5px;border-radius:5px;font-size:12px}
/* laptop height */
@media (max-height:760px) and (min-width:821px){
 #title h1{font-size:30px}#title{width:350px}
 #menu button{height:39px;font-size:14.5px}#menu button.start{height:44px}
 #menu{top:104px}#drawer{top:104px}
 #scenes{height:132px}#hint,#helpBtn,#camBtn{bottom:154px}
 .crow{margin:0 0 3px}.crow .ic{height:38px}#toolgrid button{height:40px}
}
@media (max-width:1100px) and (min-width:821px){
 #rcol{width:318px}#statbar{right:346px;left:410px}
}
/* phone / narrow: stage on top, panels flow below */
@media (max-width:820px){
 html,body{overflow:auto}
 #app{display:flex;flex-direction:column;height:auto;min-height:100dvh;overflow:visible}
 body.embed-mode #app{height:100dvh;overflow:hidden}
 #stage{position:relative;inset:auto;flex:0 0 62dvh;height:62dvh}
 #ui{position:static;pointer-events:auto;flex:1;min-height:0;overflow:auto;padding:10px;display:flex;flex-direction:column;gap:10px;background:#0f1726}
 body.embed-mode #ui{overflow:auto}
 #title{left:8px;top:8px;width:auto;padding:4px 10px 4px 6px;gap:6px;pointer-events:none;position:absolute}
 #title svg.logo{width:44px;height:38px}
 #title h1{font-size:17px}#title p{font-size:7px;letter-spacing:.18em;margin-top:2px}
 #statbar{position:absolute;left:8px;right:8px;top:58px}
 #statbar .pills{gap:4px}.pill{font-size:11px;padding:2px 8px}#statbar .pill:nth-child(n+7){display:none}
 #goal{font-size:11px;padding:4px 8px}
 #rcol{position:static;width:auto}
 #menu,#drawer,#controls,#tools,#scenes{position:static;width:auto;max-height:none;pointer-events:auto}
 #menu{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
 #menu button{height:46px;padding:0 8px;gap:7px;font-size:13px}
 #menu button.start{grid-column:1/-1;height:48px}
 #menu svg.i{width:20px;height:20px}
 #scenes{display:flex;overflow-x:auto;height:122px;gap:8px;order:-1}
 #scenes button{flex:0 0 112px}
 #scenes span{font-size:12px}
 #toolgrid{grid-template-columns:1fr 1fr 1fr}#toolgrid button{height:48px;font-size:13px;padding:0 8px;gap:6px}
 #hint{bottom:8px;font-size:11px}
 #helpBtn,#camBtn{bottom:8px;top:auto;width:38px;height:38px}
 #camBtn{left:8px}#helpBtn{left:54px}
 #hint{display:none}
}