:root{
  --steel:#2b2f36;
  --steel-lt:#3a4049;
  --steel-dk:#1a1d22;
  --amber:#ff9010;
  --amber-glow:#ffb347;
  --phos:#7dff5a;
  --phos-dk:#123a0c;
  --red:#ff3b30;
  --line:#0c0e11;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;height:100%;overflow:hidden;background:#0a0b0d;font-family:'Chakra Petch',sans-serif;color:#cfd4da;}
#scene-container{position:fixed;inset:0;height:62vh;top:0;}

/* ===== BOOT ===== */
.boot{position:fixed;inset:0;z-index:60;background:#05070a;display:flex;align-items:center;justify-content:center;
  transition:opacity .6s ease;}
.boot.hide{opacity:0;pointer-events:none;}
.boot-inner{width:min(560px,90vw);}
#boot-text{font-family:'Share Tech Mono',monospace;color:var(--phos);font-size:13px;line-height:1.7;
  text-shadow:0 0 8px rgba(125,255,90,.5);white-space:pre-wrap;}

/* ===== WARNING OVERLAY ===== */
.warn-overlay{position:fixed;inset:0;top:0;height:62vh;z-index:40;pointer-events:none;opacity:0;
  background:repeating-linear-gradient(45deg,rgba(255,59,48,.12) 0 30px,transparent 30px 60px);
  display:flex;align-items:center;justify-content:center;transition:opacity .2s;}
.warn-overlay.on{opacity:1;animation:flash .5s steps(2) infinite;}
.warn-overlay::after{content:"WARNING · SIMULATED ENGINE, REAL REGRET";font-weight:700;letter-spacing:2px;
  color:var(--red);background:#1a0303;padding:10px 22px;border:2px solid var(--red);font-size:clamp(12px,3vw,18px);
  text-shadow:0 0 12px rgba(255,59,48,.8);}
@keyframes flash{50%{opacity:.4;}}

/* ===== UI PANEL ===== */
#ui{position:fixed;left:0;right:0;bottom:0;height:38vh;min-height:300px;z-index:20;
  background:linear-gradient(180deg,#20242b 0%,#171a1f 100%);
  border-top:3px solid #000;box-shadow:0 -20px 40px rgba(0,0,0,.6),inset 0 2px 0 #454b54;
  display:flex;flex-direction:column;overflow:auto;
  background-image:
    linear-gradient(180deg,rgba(255,255,255,.02) 0 1px,transparent 1px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.015) 0 2px,transparent 2px 4px);
}
#ui::before,#ui::after{content:"";position:absolute;top:8px;width:12px;height:12px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#565c65,#1a1d22);box-shadow:inset 0 0 3px #000;}
#ui::before{left:8px;} #ui::after{right:8px;}

/* readout strip */
.readout-strip{display:flex;align-items:center;gap:12px;padding:8px 16px;flex-wrap:wrap;
  border-bottom:1px solid var(--line);background:linear-gradient(180deg,#15171b,#0e1013);}
.lcd{background:#031a02;border:2px solid #0a2e08;border-radius:4px;padding:4px 12px;display:flex;align-items:baseline;gap:8px;
  box-shadow:inset 0 0 14px rgba(0,0,0,.9);}
.lcd-label{font-family:'Share Tech Mono';font-size:11px;color:#3c8a2e;}
.lcd-num{font-family:'Share Tech Mono';font-size:26px;color:var(--phos);letter-spacing:3px;
  text-shadow:0 0 10px rgba(125,255,90,.7);}
.dtc{flex:1;min-width:180px;font-family:'Share Tech Mono';font-size:11px;color:var(--amber);
  border:1px solid #4a3410;background:#1a1206;padding:5px 10px;border-radius:3px;letter-spacing:.5px;}
.dtc.fault{color:var(--red);border-color:#5a1010;background:#1a0505;animation:pulse 1s infinite;}
@keyframes pulse{50%{opacity:.55;}}
.fanwrap{display:flex;align-items:center;gap:6px;}
.fan-dot{width:12px;height:12px;border-radius:50%;background:#333;border:1px solid #000;box-shadow:inset 0 0 3px #000;}
.fan-dot.on{background:radial-gradient(circle,#7fd8ff,#0a5a8c);box-shadow:0 0 10px #4fb8ff;animation:spin 1s linear infinite;}
.fanlbl{font-size:10px;letter-spacing:1px;color:#6a7078;}

/* gauges */
.gauges{display:flex;gap:10px;padding:10px 16px 4px;justify-content:center;flex-wrap:wrap;}
.gauge{width:118px;text-align:center;}
.gauge canvas{width:118px;height:82px;display:block;}
.gauge .gname{font-size:10px;letter-spacing:1.5px;color:#8a9098;margin-top:-4px;}

/* panel controls */
.panel{display:flex;gap:18px;padding:8px 18px 12px;flex-wrap:wrap;align-items:stretch;justify-content:center;}
.knob-title{font-size:11px;letter-spacing:1.5px;color:#9aa0a8;font-weight:600;margin-bottom:6px;text-align:center;}
.firing{color:var(--amber);font-size:9px;}

.throttle-block{display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:#14161a;border:1px solid #000;border-radius:8px;padding:10px 14px;box-shadow:inset 0 0 12px rgba(0,0,0,.6);}
.vslider{-webkit-appearance:none;appearance:none;width:120px;height:14px;background:linear-gradient(90deg,#3a4049,#1a1d22);
  border-radius:8px;outline:none;transform:rotate(-90deg);margin:44px 0;border:1px solid #000;}
.vslider::-webkit-slider-thumb{-webkit-appearance:none;width:26px;height:34px;border-radius:5px;
  background:linear-gradient(180deg,#ff9010,#b5560a);border:2px solid #000;box-shadow:0 0 12px rgba(255,144,16,.6);cursor:grab;}
.vslider::-moz-range-thumb{width:26px;height:34px;border-radius:5px;background:linear-gradient(180deg,#ff9010,#b5560a);
  border:2px solid #000;box-shadow:0 0 12px rgba(255,144,16,.6);cursor:grab;}
.knob-readout{font-family:'Share Tech Mono';color:var(--amber);font-size:16px;}

.mid-controls{display:flex;flex-direction:column;gap:10px;flex:1;min-width:280px;}
.row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;justify-content:center;}

.bigswitch{width:96px;height:64px;border-radius:8px;border:3px solid #000;cursor:pointer;font-weight:700;
  font-size:13px;letter-spacing:1px;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:linear-gradient(180deg,#5a1010,#2a0808);box-shadow:0 4px 0 #000,inset 0 2px 3px rgba(255,255,255,.15);
  transition:.15s;}
.bigswitch span{font-size:10px;opacity:.8;letter-spacing:2px;}
.bigswitch.on{background:linear-gradient(180deg,#1e7a12,#0d3a08);box-shadow:0 4px 0 #000,0 0 16px rgba(125,255,90,.5),inset 0 2px 3px rgba(255,255,255,.2);}
.bigswitch:active{transform:translateY(3px);box-shadow:0 1px 0 #000;}

.mode-block,.cyl-block{background:#14161a;border:1px solid #000;border-radius:8px;padding:8px 12px;
  box-shadow:inset 0 0 10px rgba(0,0,0,.5);}
.modes{display:flex;gap:5px;}
.modes button{font-family:'Chakra Petch';font-size:10px;font-weight:600;padding:6px 8px;border-radius:4px;cursor:pointer;
  background:#252a31;color:#8a9098;border:1px solid #000;letter-spacing:.5px;transition:.12s;}
.modes button.active{background:var(--amber);color:#000;box-shadow:0 0 12px rgba(255,144,16,.6);}

.cyls{display:flex;gap:8px;}
.cyl-btn{width:44px;height:44px;border-radius:6px;border:2px solid #000;cursor:pointer;font-weight:700;font-size:15px;
  background:radial-gradient(circle at 40% 30%,#3a4049,#16181c);color:#7dff5a;position:relative;transition:.1s;
  box-shadow:inset 0 0 6px rgba(0,0,0,.7);}
.cyl-btn .fireled{position:absolute;top:3px;right:3px;width:7px;height:7px;border-radius:50%;background:#222;}
.cyl-btn.active{border-color:#3c8a2e;color:#7dff5a;}
.cyl-btn.dead{color:#5a1010;background:radial-gradient(circle at 40% 30%,#2a1010,#140505);border-color:#3a0808;}
.cyl-btn.active .fireled.lit{background:var(--amber);box-shadow:0 0 8px var(--amber-glow);}
.cyl-btn:active{transform:scale(.94);}

.toggles{gap:10px;}
.tgl{display:flex;flex-direction:column;align-items:center;gap:4px;}
.tgl .tlbl{font-size:9px;letter-spacing:1px;color:#8a9098;text-align:center;max-width:70px;}
.tgl button{width:54px;height:26px;border-radius:14px;border:2px solid #000;cursor:pointer;background:#1a1d22;position:relative;
  transition:.15s;box-shadow:inset 0 0 6px rgba(0,0,0,.6);}
.tgl button::after{content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;
  background:linear-gradient(180deg,#767c85,#3a4049);transition:.15s;}
.tgl button.on{background:#0d3a08;}
.tgl button.on::after{left:30px;background:linear-gradient(180deg,#8dff6a,#2e8a12);box-shadow:0 0 8px rgba(125,255,90,.7);}

/* resonator special toggle 3-state */
.tgl button.res.on::after{background:linear-gradient(180deg,#ffcf6a,#b5560a);box-shadow:0 0 8px var(--amber);}

.footer{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;
  padding:6px 16px;border-top:1px solid var(--line);background:#0e1013;}
.plate{font-family:'Share Tech Mono';font-size:10px;color:#5a6068;letter-spacing:.5px;}
.footer a{color:var(--amber);font-size:11px;text-decoration:none;border:1px solid #4a3410;padding:3px 10px;border-radius:3px;}
.footer a:hover{background:var(--amber);color:#000;}

@media(max-width:640px){
  #scene-container{height:52vh;}
  .warn-overlay{height:52vh;}
  #ui{height:48vh;min-height:340px;}
  .gauge{width:96px;} .gauge canvas{width:96px;height:66px;}
}