:root{
  --bg0:#04060d; --bg1:#0a1226; --ink:#e8eeff; --mut:#8e9cc4; --dim:#5d6a91;
  --blue:#3aa0ff; --violet:#9b6bff; --cyan:#4fe3ff; --amber:#ffb84d; --red:#ff4d6a; --green:#4dffb0;
  --glass:rgba(14,22,46,.52); --glass2:rgba(22,32,66,.42); --line:rgba(150,175,255,.16);
  --r:18px;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI Variable Display","Segoe UI",Inter,Roboto,"Helvetica Neue",system-ui,sans-serif;
  --mono:"SF Mono",ui-monospace,"Cascadia Code",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;height:100%;background:var(--bg0);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;overflow:hidden}
#app{position:fixed;inset:0}
#stage{position:absolute;inset:0;background:radial-gradient(120% 90% at 60% 10%,#13204a 0%,#070b1a 55%,#03050b 100%)}
#scene{display:block;width:100%;height:100%;outline:none;cursor:grab}
#scene.pointer{cursor:pointer}
#scene:active{cursor:grabbing}

.glass{background:linear-gradient(160deg,rgba(30,44,90,.55),rgba(10,16,36,.55));border:1px solid var(--line);border-radius:var(--r);
  backdrop-filter:blur(18px) saturate(150%);-webkit-backdrop-filter:blur(18px) saturate(150%);
  box-shadow:0 20px 60px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.07),inset 0 0 0 1px rgba(58,160,255,.04)}

/* top bar */
.topbar{position:absolute;left:18px;top:16px;right:18px;height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 16px 0 14px;pointer-events:auto}
.brand{display:flex;gap:12px;align-items:center}
.brand h1{margin:0;font-size:17px;font-weight:650;letter-spacing:.2px}
.brand h1 .ver{font:600 10px var(--mono);color:var(--cyan);border:1px solid rgba(79,227,255,.35);padding:2px 6px;border-radius:6px;margin-left:6px;vertical-align:2px}
.brand p{margin:2px 0 0;font-size:12px;color:var(--mut)}
.disclaimer{font-size:12px;font-weight:600;color:#ffd9a0;background:rgba(255,184,77,.09);border:1px solid rgba(255,184,77,.32);padding:7px 12px;border-radius:999px;white-space:nowrap}
.disclaimer::before{content:"⚠";margin-right:7px}

/* panels */
.panel{position:absolute;width:318px;display:flex;flex-direction:column;overflow:hidden}
#how{left:18px;top:92px;max-height:calc(100% - 92px - 150px)}
#controls{right:18px;top:92px;max-height:calc(100% - 110px)}
.panel-head{all:unset;display:flex;align-items:center;gap:8px;padding:14px 16px 10px;font-size:13px;font-weight:650;letter-spacing:.3px;text-transform:uppercase;color:#cfd9ff;cursor:pointer}
.panel-head.static{cursor:default}
.panel-head .tag{font:600 10px var(--mono);text-transform:none;letter-spacing:0;color:var(--violet);border:1px solid rgba(155,107,255,.4);border-radius:6px;padding:2px 6px}
.panel-head .chev{margin-left:auto;color:var(--mut);transition:transform .25s}
#how.collapsed .chev{transform:rotate(-90deg)}
#how.collapsed .panel-body{display:none}
.panel-head .live{margin-left:auto;font:600 10px var(--mono);color:var(--green);text-transform:none;display:flex;align-items:center;gap:6px}
.panel-head .live i{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green);animation:blink 1.6s infinite}
@keyframes blink{50%{opacity:.25}}
.panel-body{padding:2px 16px 16px;overflow:auto;scrollbar-width:thin}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px;position:relative}
.steps::before{content:"";position:absolute;left:13px;top:14px;bottom:14px;width:1px;background:linear-gradient(var(--blue),var(--violet))}
.steps li{display:flex;gap:12px;padding:8px 8px 8px 0;border-radius:12px;cursor:pointer;transition:background .2s}
.steps li:hover,.steps li.on{background:rgba(58,160,255,.08)}
.steps .n{flex:none;width:27px;height:27px;border-radius:50%;display:grid;place-items:center;font:700 12px var(--mono);background:#0b1430;border:1px solid rgba(58,160,255,.5);color:#bfe0ff;position:relative;z-index:1;box-shadow:0 0 14px rgba(58,160,255,.35)}
.steps li.on .n{background:linear-gradient(135deg,var(--blue),var(--violet));color:#fff}
.steps b{font-size:13px;font-weight:620}
.steps p{margin:2px 0 0;font-size:12px;line-height:1.45;color:var(--mut)}
.porta{margin-top:12px;padding:12px;border-radius:14px;background:rgba(155,107,255,.07);border:1px solid rgba(155,107,255,.22)}
.porta h5{margin:0 0 6px;font-size:12px;letter-spacing:.3px;text-transform:uppercase;color:#d8c8ff}
.porta ul{margin:0;padding-left:16px;font-size:12px;line-height:1.5;color:#b9c3e6}
.porta b{color:#fff;font-weight:600}
.fine{margin:8px 0 0;font-size:11px;color:var(--dim)}

/* controls */
.ctrl{padding:10px 0 8px;border-bottom:1px solid rgba(150,175,255,.08)}
.ctrl .row{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}
.ctrl label{font-size:13px;color:#d6defa}
.ctrl output{font:600 12px var(--mono);color:var(--cyan)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:99px;outline:none;margin:0;
  background:linear-gradient(90deg,var(--blue),var(--violet)) 0/var(--p,50%) 100% no-repeat,rgba(255,255,255,.08);box-shadow:inset 0 0 0 1px rgba(255,255,255,.05)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:#fff;border:3px solid #3aa0ff;box-shadow:0 0 0 4px rgba(58,160,255,.18),0 0 16px rgba(58,160,255,.8);cursor:pointer}
input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid #3aa0ff;box-shadow:0 0 16px rgba(58,160,255,.8);cursor:pointer}
.ctrl[data-key=solar] input{background:linear-gradient(90deg,#ff9a3c,#ffd76a) 0/var(--p,50%) 100% no-repeat,rgba(255,255,255,.08)}
.ctrl[data-key=solar] input::-webkit-slider-thumb{border-color:#ffb84d;box-shadow:0 0 0 4px rgba(255,184,77,.18),0 0 16px rgba(255,184,77,.8)}
.ctrl[data-key=solar] output{color:var(--amber)}
.ticks{display:flex;justify-content:space-between;font-size:10px;color:var(--dim);margin-top:6px;text-transform:uppercase;letter-spacing:.5px}
.switches{display:flex;flex-direction:column;gap:10px;padding:12px 0}
.switch{display:flex;align-items:center;gap:10px;font-size:13px;color:#d6defa;cursor:pointer}
.switch input{position:absolute;opacity:0;pointer-events:none}
.switch .track{width:36px;height:20px;border-radius:99px;background:rgba(255,255,255,.1);position:relative;transition:background .2s;box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
.switch .knob{position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#cfd8ff;transition:transform .2s}
.switch input:checked+.track{background:linear-gradient(90deg,var(--blue),var(--violet));box-shadow:0 0 14px rgba(58,160,255,.5)}
.switch input:checked+.track .knob{transform:translateX(16px);background:#fff}
.switch input:focus-visible+.track{outline:2px solid var(--cyan);outline-offset:2px}
.sub{font-size:11px;color:var(--dim);text-transform:uppercase;letter-spacing:.6px;margin:4px 0 8px}
.seg{display:flex;flex-wrap:wrap;gap:6px}
.seg button,.ghost{font:600 12px var(--sans);color:#cbd6ff;background:rgba(255,255,255,.05);border:1px solid rgba(150,175,255,.16);padding:7px 11px;border-radius:10px;cursor:pointer;transition:all .2s}
.seg button:hover,.ghost:hover{border-color:rgba(58,160,255,.6);color:#fff}
.seg button.on{background:linear-gradient(135deg,rgba(58,160,255,.35),rgba(155,107,255,.35));border-color:rgba(130,150,255,.7);color:#fff;box-shadow:0 0 18px rgba(80,120,255,.35)}
.actions{margin-top:14px}.ghost{width:100%}
.hint{font-size:11px;color:var(--dim);margin:12px 0 0;text-align:center}

/* readouts */
#readouts{position:absolute;left:354px;right:354px;bottom:18px;padding:12px 14px 8px}
.ro-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.ro{background:rgba(255,255,255,.035);border:1px solid rgba(150,175,255,.1);border-radius:12px;padding:9px 11px;display:flex;flex-direction:column;gap:3px;min-width:0}
.ro .k{font-size:10.5px;color:var(--mut);text-transform:uppercase;letter-spacing:.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ro .v{display:flex;align-items:baseline;gap:4px}
.ro .v b{font:650 22px var(--sans);font-variant-numeric:tabular-nums;letter-spacing:-.3px;background:linear-gradient(180deg,#fff,#b8ccff);-webkit-background-clip:text;background-clip:text;color:transparent}
.ro .v small{font-size:11px;color:var(--mut)}
.ro .s{font-size:10.5px;color:var(--dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar{height:4px;border-radius:9px;background:rgba(255,255,255,.07);overflow:hidden;margin-top:3px}
.bar i{display:block;height:100%;width:50%;background:linear-gradient(90deg,var(--blue),var(--cyan));box-shadow:0 0 10px var(--cyan);transition:width .3s}
.bar.violet i{background:linear-gradient(90deg,var(--violet),#d58bff);box-shadow:0 0 10px var(--violet)}
.bar.amber i{background:linear-gradient(90deg,#ffcf6a,var(--amber));box-shadow:0 0 10px var(--amber)}
.bar.low i{background:linear-gradient(90deg,#ff4d6a,#ff8a5c);box-shadow:0 0 10px var(--red)}
.formula{margin-top:7px;font-size:11px;color:var(--dim)}
.formula summary{cursor:pointer;list-style:none}
.formula summary::before{content:"ƒ";font-family:var(--mono);color:var(--violet);margin-right:6px}
.formula ul{margin:6px 0 2px;padding-left:16px;font-family:var(--mono);font-size:10.5px;line-height:1.6;color:#9fb0e0;columns:2;column-gap:24px}

/* banner */
.banner{position:absolute;top:92px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:10px;padding:9px 16px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(60,40,10,.6);border:1px solid rgba(255,184,77,.5);color:#ffe2b0;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 0 30px rgba(255,160,40,.25);z-index:5;white-space:nowrap}
.banner .dot{width:9px;height:9px;border-radius:50%;background:var(--amber);box-shadow:0 0 12px var(--amber);animation:blink 1s infinite}
.banner.err{background:rgba(70,10,24,.65);border-color:rgba(255,77,106,.6);color:#ffd0d8;box-shadow:0 0 30px rgba(255,60,90,.3)}
.banner.err .dot{background:var(--red);box-shadow:0 0 12px var(--red)}
.banner.ok{background:rgba(8,50,40,.55);border-color:rgba(77,255,176,.45);color:#c8ffe9;box-shadow:0 0 24px rgba(77,255,176,.2)}
.banner.ok .dot{background:var(--green);box-shadow:0 0 12px var(--green);animation:none}
.banner code{font-family:var(--mono);background:rgba(0,0,0,.3);padding:1px 5px;border-radius:5px}
#fileWarn{top:140px;white-space:normal;max-width:80vw}

/* labels */
#labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.lbl{position:absolute;left:0;top:0;transform:translate(-50%,-100%);font:600 10.5px var(--sans);letter-spacing:.4px;color:#dfe7ff;white-space:nowrap;padding:3px 8px;border-radius:7px;background:rgba(10,16,38,.62);border:1px solid rgba(120,160,255,.28);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);transition:opacity .25s;text-transform:uppercase}
.lbl::after{content:"";position:absolute;left:50%;top:100%;width:1px;height:14px;background:linear-gradient(rgba(120,160,255,.6),transparent)}
.lbl.red{border-color:rgba(255,90,110,.45)}.lbl.amber{border-color:rgba(255,184,77,.5)}.lbl.violet{border-color:rgba(155,107,255,.55)}.lbl.cyan{border-color:rgba(79,227,255,.5)}
.lbl.hot{background:linear-gradient(135deg,rgba(58,160,255,.5),rgba(155,107,255,.5));color:#fff}
#labels.off .lbl{opacity:0}

/* tooltip */
#tooltip{position:absolute;z-index:8;width:270px;padding:12px 14px 13px;pointer-events:auto}
#tooltip .tt-kicker{font:600 10px var(--mono);color:var(--cyan);text-transform:uppercase;letter-spacing:.6px}
#tooltip h4{margin:3px 0 4px;font-size:15px}
#tooltip p{margin:0;font-size:12.5px;line-height:1.5;color:#b8c4ea}
.tt-close{position:absolute;right:8px;top:6px;background:none;border:0;color:var(--mut);font-size:18px;cursor:pointer}

#fallback{position:absolute;inset:0;display:grid;place-items:center;z-index:9}
.fb-card{max-width:420px;padding:24px 26px}.fb-card h2{margin:0 0 8px}.fb-card p{color:var(--mut);line-height:1.5}

@media (max-width:1280px){
  #readouts{left:18px;right:354px}
  .ro-grid{grid-template-columns:repeat(3,1fr)}
  #how{max-height:calc(100% - 92px - 210px)}
}
@media (max-width:900px){
  html,body{overflow:auto;height:auto}
  #app{position:static;display:flex;flex-direction:column;gap:12px;padding:10px}
  #stage{position:relative;height:58vh;min-height:340px;border-radius:18px;overflow:hidden;order:2}
  .topbar{position:relative;left:auto;right:auto;top:auto;height:auto;flex-direction:column;align-items:flex-start;gap:8px;padding:12px;order:1}
  .disclaimer{white-space:normal}
  .panel,#readouts{position:relative;left:auto;right:auto;top:auto;bottom:auto;width:auto;max-height:none}
  #readouts{order:3}#controls{order:4}#how{order:5}
  .ro-grid{grid-template-columns:repeat(2,1fr)}
  .formula ul{columns:1}
  .banner{top:12px;font-size:12px;white-space:normal;width:max-content;max-width:92%}
  .lbl{font-size:9px}
}