*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#161a22;--panel:rgba(35,40,52,.94);--accent:#4c9cff;--good:#50dc82;--warn:#f0b450;--danger:#dc5a5a;--light:#e6ebf5;--dim:#8c96a5;--grid:rgba(80,90,110,.47);--radius:14px;--glass:rgba(255,255,255,.06)}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--light);overflow:hidden;height:100vh;width:100vw}
#canvas3d{position:absolute;inset:0;width:100%;height:100%;z-index:0}
#topbar{position:fixed;top:0;left:0;right:0;height:52px;z-index:20;display:flex;align-items:center;padding:0 22px;background:rgba(12,15,22,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(76,156,255,.15);gap:16px}
#topbar h1{font-size:15px;font-weight:600;letter-spacing:.3px;white-space:nowrap}
#viewLabel{font-size:12px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:1.2px;background:rgba(76,156,255,.12);padding:4px 12px;border-radius:20px}
.spacer{flex:1}
.topbtn{border:none;padding:8px 18px;border-radius:8px;font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:all .2s;letter-spacing:.3px}
.topbtn:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(0,0,0,.4)}
#toggleViewBtn{background:var(--accent);color:#fff}
#resetBtn{background:var(--danger);color:#fff}
.side-panel{position:fixed;top:62px;right:14px;width:320px;z-index:15;background:var(--panel);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.07);border-radius:var(--radius);padding:18px 18px 14px;box-shadow:0 8px 40px rgba(0,0,0,.5);transition:opacity .3s,transform .3s;max-height:calc(100vh - 80px);overflow-y:auto}
.side-panel.hidden{opacity:0;pointer-events:none;transform:translateX(20px)}
.side-panel::-webkit-scrollbar{width:5px}
.side-panel::-webkit-scrollbar-track{background:transparent}
.side-panel::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:3px}
.panel-title{font-size:12px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:1.6px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.panel-title::before{content:'';width:4px;height:16px;background:var(--accent);border-radius:2px}
.section-divider{font-size:12px;font-weight:700;color:var(--warn);text-transform:uppercase;letter-spacing:1.4px;margin:14px 0 10px;padding-top:10px;border-top:1px solid rgba(255,255,255,.06)}
.control-group{margin-bottom:14px}
.control-group label{display:flex;justify-content:space-between;font-size:12px;font-weight:500;color:var(--dim);margin-bottom:5px}
.control-group .val{color:var(--accent);font-weight:600;font-variant-numeric:tabular-nums}
input[type=range]{-webkit-appearance:none;width:100%;height:6px;background:rgba(255,255,255,.08);border-radius:3px;outline:none;cursor:pointer}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(76,156,255,.5);cursor:pointer;transition:transform .15s}
input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.25)}
input[type=range]::-moz-range-thumb{width:16px;height:16px;border-radius:50%;border:none;background:var(--accent);box-shadow:0 0 8px rgba(76,156,255,.5);cursor:pointer}
#runBtn{width:100%;padding:11px;border:none;border-radius:10px;font-family:inherit;font-size:14px;font-weight:700;cursor:pointer;transition:all .25s;letter-spacing:.4px;margin-top:6px}
#runBtn.go{background:linear-gradient(135deg,#50dc82,#3ab868);color:#111}
#runBtn.go:hover{box-shadow:0 4px 20px rgba(80,220,130,.4);transform:translateY(-1px)}
#runBtn.stop{background:linear-gradient(135deg,#f0b450,#e09530);color:#111}
#runBtn.stop:hover{box-shadow:0 4px 20px rgba(240,180,80,.4);transform:translateY(-1px)}
.toggle-btn{padding:7px 16px;border:2px solid var(--dim);border-radius:8px;background:transparent;color:var(--dim);font-family:inherit;font-size:12px;font-weight:600;cursor:pointer;transition:all .2s;width:100%}
.toggle-btn.active{border-color:var(--good);color:var(--good);background:rgba(80,220,130,.1)}
#simOverlay{position:fixed;bottom:14px;left:14px;right:348px;z-index:15;display:flex;flex-direction:column;gap:8px;transition:opacity .3s,transform .3s}
#simOverlay.hidden{opacity:0;pointer-events:none;transform:translateY(20px)}
#sensorBox{display:flex;gap:14px;align-items:center;padding:12px 18px;background:var(--panel);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);box-shadow:0 6px 24px rgba(0,0,0,.4);flex-wrap:wrap}
.sensor{display:flex;flex-direction:column;gap:1px}
.sensor .lbl{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--dim);font-weight:600}
.sensor .big{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums}
.sensor.temp .big{color:#ff8c6e}
.sensor.hum .big{color:#6edc9e}
.sensor.co2 .big{color:#f0b450}
.sensor.o2 .big{color:#6ec8dc}
.sensor.lux .big{color:#dcd06e}
.sensor-meta{font-size:12px;color:var(--dim);font-weight:500}
#acState{padding:3px 10px;border-radius:6px;font-size:12px;font-weight:700;text-transform:uppercase}
#acState.on{background:rgba(80,220,130,.15);color:var(--good)}
#acState.off{background:rgba(140,150,165,.1);color:var(--dim)}
#fanState{padding:3px 10px;border-radius:6px;font-size:12px;font-weight:700;text-transform:uppercase}
#fanState.on{background:rgba(76,156,255,.15);color:var(--accent)}
#fanState.off{background:rgba(140,150,165,.1);color:var(--dim)}
#chartArea{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;height:130px}
.chart-box{background:var(--panel);border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);padding:8px 10px 6px;position:relative;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.3)}
.chart-box .chart-title{font-size:12px;font-weight:600;color:var(--dim);text-transform:uppercase;letter-spacing:.6px}
.chart-box .chart-val{position:absolute;top:6px;right:10px;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums}
.chart-box canvas{width:100%;height:calc(100% - 18px);margin-top:3px}