:root{
  --bg:#111418;--panel:#1b2026;--card:#252b32;--border:#343b44;
  --text:#f4f5f6;--muted:#aeb6c0;--red:#c8101e;--red2:#ef2434;
  --amber:#e1a72d;--green:#28a66a;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,Segoe UI,Arial,sans-serif}
button,select,input{font:inherit}
button{border:0;border-radius:10px;background:var(--red);color:#fff;padding:11px 15px;font-weight:700;cursor:pointer}
button:hover{filter:brightness(1.08)}
button.secondary{background:var(--card);border:1px solid var(--border)}
button.secondary.active{background:var(--red);border-color:var(--red2)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 20px;border-bottom:1px solid var(--border);background:#161a1f;position:sticky;top:0;z-index:40}
.brand{display:flex;align-items:center;gap:14px;min-width:0}
.logo{width:auto;height:72px;max-width:160px;object-fit:contain;background:transparent;border-radius:8px;padding:2px}
h1,h2,h3,p{margin:0}
h1{font-size:22px}.brand p,.toolbar p,.remote-head p{color:var(--muted);font-size:13px;margin-top:4px}
.badges{display:flex;gap:7px;flex-wrap:wrap}
.badges span{background:var(--card);border:1px solid var(--border);border-radius:999px;padding:6px 9px;font-size:12px}
.layout{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(300px,.7fr);gap:16px;padding:16px}
.sim-card,.panel{background:var(--panel);border:1px solid var(--border);border-radius:16px}
.sim-card{padding:12px}
.toolbar{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px}
.toolbar-actions{display:flex;gap:8px;flex-wrap:wrap}
.viewport-wrap{position:relative;overflow:hidden;border:1px solid var(--border);border-radius:16px;background:#202327}
#simCanvas{display:block;width:100%;height:540px;touch-action:none}
.loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#202327;color:#cbd1d8}
.hud{position:absolute;top:12px;background:rgba(0,0,0,.65);border-radius:10px;padding:9px 11px;font:700 12px/1.55 ui-monospace,SFMono-Regular,Consolas,monospace}
.hud-left{left:12px}.hud-right{right:12px;text-align:right}
.hud.warning{outline:2px solid rgba(225,167,45,.75)}
.hud.failure{outline:2px solid rgba(239,36,52,.9);background:rgba(70,10,16,.78)}
.hud-semaphore{display:flex;justify-content:flex-end;gap:6px;margin-top:6px}
.hud-semaphore .lamp{width:14px;height:14px}
.side-panel{display:flex;flex-direction:column;gap:12px}
.panel{padding:14px}
.panel h3{font-size:15px;margin-bottom:12px}
.panel label{display:block;color:var(--muted);font-size:13px;margin-top:12px}
.panel label span{display:flex;justify-content:space-between;gap:10px}
.panel input[type=range]{width:100%;margin-top:7px;accent-color:var(--red)}
.panel select{width:100%;margin-top:7px;background:var(--card);border:1px solid var(--border);color:var(--text);padding:10px;border-radius:10px}
.limiter-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.lmi-title-wrap{position:relative}
.lmi-title-wrap h3{display:inline-flex;align-items:center;gap:6px;margin-bottom:0;cursor:help}
.lmi-title-wrap h3::after{content:"?";display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:50%;background:var(--card);border:1px solid var(--border);color:var(--muted);font-size:12px}
.lmi-help{position:absolute;left:0;top:calc(100% + 8px);z-index:80;width:min(360px,80vw);padding:12px;background:#101418;border:1px solid var(--border);border-radius:10px;box-shadow:0 16px 38px rgba(0,0,0,.46);color:var(--text);font-size:12px;line-height:1.45;opacity:0;visibility:hidden;transform:translateY(-4px);transition:.15s}
.lmi-title-wrap:hover .lmi-help,.lmi-title-wrap:focus-within .lmi-help{opacity:1;visibility:visible;transform:translateY(0)}
.meter{height:13px;border-radius:99px;background:var(--card);overflow:hidden;margin:10px 0}
#utilBar{height:100%;width:0;background:var(--green);transition:.15s}
.boom-semaphore{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--border);border-radius:8px;padding:7px 9px;margin-bottom:10px}
.lamp{width:18px;height:18px;border-radius:50%;background:#353c45;border:1px solid #4f5965;box-shadow:inset 0 2px 5px rgba(0,0,0,.5);opacity:.38}
.lamp.active{opacity:1;box-shadow:0 0 14px currentColor,inset 0 2px 5px rgba(0,0,0,.35)}
.lamp.green{color:var(--green)}.lamp.green.active{background:var(--green)}
.lamp.amber{color:var(--amber)}.lamp.amber.active{background:var(--amber)}
.lamp.red{color:var(--red2)}.lamp.red.active{background:var(--red2)}
.boom-semaphore strong{margin-left:auto;font-size:12px}
.lmi-readouts{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:10px 0}
.lmi-readouts>div{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:8px;min-width:0}
.lmi-readouts span{display:block;color:var(--muted);font-size:11px;margin-bottom:4px}
.lmi-readouts strong{font-size:14px}
.stability-visuals{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0}
.support-map,.level-gauge{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:8px;min-width:0}
.support-map svg{display:block;width:100%;height:118px;background:#171b20;border-radius:6px}
#supportPolygon{fill:rgba(40,166,106,.12);stroke:var(--green);stroke-width:3}
#supportCenterX,#supportCenterY{stroke:rgba(244,245,246,.2);stroke-width:1;stroke-dasharray:4 4}
#loadVector2d{stroke:var(--amber);stroke-width:3;stroke-linecap:round}
#basePoint2d{fill:#f4f5f6;stroke:#111418;stroke-width:2}
#loadPoint2d{fill:var(--green);stroke:#111418;stroke-width:2}
.support-map strong{display:block;margin-top:7px;font-size:12px;line-height:1.25}
.support-map.warning #supportPolygon{fill:rgba(225,167,45,.12);stroke:var(--amber)}
.support-map.warning #loadPoint2d{fill:var(--amber)}
.support-map.failure #supportPolygon{fill:rgba(200,16,30,.12);stroke:var(--red2)}
.support-map.failure #loadPoint2d{fill:var(--red2)}
.level-tube{position:relative;height:48px;border-radius:999px;background:linear-gradient(180deg,#2a3038,#15191e);border:1px solid #59626c;overflow:hidden;box-shadow:inset 0 3px 8px rgba(0,0,0,.55)}
.level-tube::before{content:"";position:absolute;inset:10px 14px;border-top:2px solid rgba(255,255,255,.22);border-bottom:2px solid rgba(255,255,255,.16);border-radius:999px}
.level-band{position:absolute;left:50%;top:6px;bottom:6px;width:42px;transform:translateX(-50%);border-left:2px solid rgba(244,245,246,.34);border-right:2px solid rgba(244,245,246,.34)}
.level-bubble{position:absolute;left:50%;top:50%;width:34px;height:22px;transform:translate(-50%,-50%);border-radius:999px;background:rgba(244,245,246,.92);border:2px solid rgba(17,20,24,.7);box-shadow:0 2px 8px rgba(0,0,0,.35);transition:left .15s ease}
.level-gauge.warning .level-bubble{background:#f0c960}
.level-gauge.failure .level-bubble{background:var(--red2)}
.level-scale{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:11px;margin-top:8px}
.level-scale strong{color:var(--text);font-size:14px}
.status{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:10px;font-size:13px;line-height:1.35;margin-bottom:10px}
.status.warning{border-color:rgba(225,167,45,.75);background:rgba(225,167,45,.13)}
.status.failure{border-color:rgba(239,36,52,.85);background:rgba(200,16,30,.16)}
.panel button{width:100%}
.chart-panel img{width:100%;display:block;border-radius:8px}
.chart-panel p{font-size:12px;color:var(--muted);margin-top:8px}
.remote-dock{position:absolute;left:16px;bottom:16px;z-index:35;width:430px;min-width:286px;max-width:calc(100% - 32px);resize:horizontal;overflow:auto;background:rgba(18,22,27,.86);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:8px 10px;box-shadow:0 12px 34px rgba(0,0,0,.42);user-select:none}
.remote-dock::after{content:"";position:absolute;right:5px;bottom:5px;width:14px;height:14px;border-right:2px solid rgba(255,255,255,.28);border-bottom:2px solid rgba(255,255,255,.28);pointer-events:none}
.remote-dock.dragging{transition:none}
.remote-head{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px;cursor:grab;touch-action:none}
.remote-dock.dragging .remote-head{cursor:grabbing}
.remote-head h3{font-size:16px}
.remote-head p{font-size:12px}
.remote-actions{display:flex;gap:6px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.remote-actions button{border-radius:8px;padding:8px 10px;font-size:12px}
#keyboardToggle.active{background:var(--red);border-color:var(--red2)}
.lever-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(62px,1fr));gap:8px}
.lever-col{text-align:center}
.lever-col strong{display:block;font-size:10px;margin-top:4px;white-space:nowrap}
.lever-col small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
.lever{height:82px;width:42px;margin:auto;background:rgba(37,43,50,.92);border:1px solid var(--border);border-radius:12px;position:relative;touch-action:none}
.lever.active{border-color:var(--red2);box-shadow:0 0 0 2px rgba(239,36,52,.2)}
.slot{position:absolute;width:5px;height:58px;left:50%;top:12px;transform:translateX(-50%);background:#4b545f;border-radius:99px}
.knob{position:absolute;width:26px;height:26px;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:50%;background:#f1f1f1;border:4px solid #2f353d;box-shadow:0 2px 5px rgba(0,0,0,.4);transition:top .08s ease}
.lever.active .knob{transition:none}
footer{color:var(--muted);font-size:11px;padding:0 18px 18px;text-align:center}
@media(max-width:1050px){
  .layout{grid-template-columns:1fr}.side-panel{display:grid;grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
  .topbar{position:relative;padding:10px;align-items:flex-start}.logo{width:82px;height:54px}.badges{display:none}
  .layout{padding:8px}.toolbar{flex-direction:column}.side-panel{grid-template-columns:1fr}
  #simCanvas{height:400px}
  .remote-dock{left:8px;bottom:8px;width:320px;min-width:268px;max-width:calc(100% - 16px);padding:7px}.remote-head{align-items:flex-start}.remote-actions{gap:5px}.remote-actions button{padding:8px 9px}.lever-grid{gap:5px}.lever{height:74px;width:40px}.slot{height:52px}
  .lever-col strong{font-size:9px}.lever-col small{font-size:9px}
  .stability-visuals{grid-template-columns:1fr}
}