:root{
    --bg:#05070d;
    --panel:rgba(14,20,32,0.72);
    --panel-solid:#0b1220;
    --stroke:rgba(120,160,200,0.16);
    --stroke-strong:rgba(120,160,200,0.34);
    --ink:#dfe8f2;
    --ink-dim:#8ea3ba;
    --ink-faint:#5d7089;
    --accent:#37e0c8;   /* teal signature */
    --accent-2:#7aa2ff;
    --warn:#ff6b6b;
    --mono:ui-monospace,"SF Mono","JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;
    --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  }
  *{box-sizing:border-box}
  html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font-family:var(--sans);overflow:hidden;-webkit-font-smoothing:antialiased}
  #app{position:fixed;inset:0}
  canvas{display:block}

  /* ---------- Console panel ---------- */
  #console{
    position:fixed;top:14px;left:14px;width:310px;max-height:calc(100vh - 28px);
    background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border:1px solid var(--stroke);border-radius:14px;
    box-shadow:0 18px 50px rgba(0,0,0,0.55);
    display:flex;flex-direction:column;overflow:hidden;z-index:10;
    transition:transform .35s cubic-bezier(.2,.8,.2,1);
  }
  #console.collapsed{transform:translateX(calc(-100% - 20px))}
  .head{padding:14px 16px 12px;border-bottom:1px solid var(--stroke);position:relative}
  .eyebrow{font-family:var(--mono);font-size:10px;letter-spacing:.28em;color:var(--accent);text-transform:uppercase;margin:0 0 4px}
  .title{font-size:17px;font-weight:650;letter-spacing:-.01em;margin:0;line-height:1.15}
  /* header collapse button */
  #hide{position:absolute;top:12px;right:12px;width:30px;height:30px;border-radius:8px;
    background:rgba(120,160,200,0.10);border:1px solid var(--stroke-strong);color:var(--accent);
    display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:15px;transition:.15s}
  #hide:hover{background:rgba(55,224,200,0.16);border-color:var(--accent)}
  .sub{font-family:var(--mono);font-size:10.5px;color:var(--ink-dim);margin:6px 0 0;line-height:1.5}
  .scroll{overflow-y:auto;padding:6px 14px 16px;scrollbar-width:thin;scrollbar-color:var(--stroke-strong) transparent}
  .scroll::-webkit-scrollbar{width:8px}
  .scroll::-webkit-scrollbar-thumb{background:var(--stroke-strong);border-radius:8px}

  .group{margin-top:18px;padding-top:14px;border-top:1px solid var(--stroke-strong)}
  .group:first-child{border-top:none;padding-top:6px;margin-top:6px}
  .group > .glabel{font-family:var(--sans);font-weight:700;font-size:13.5px;letter-spacing:.01em;
    color:var(--ink);display:flex;align-items:center;gap:10px;margin:0 0 10px;cursor:pointer;user-select:none}
  .group > .glabel::before{content:"";width:4px;height:16px;border-radius:3px;
    background:linear-gradient(var(--accent),var(--accent-2));flex:none}
  .glabel .gline{flex:1;height:1px;background:var(--stroke)}
  .glabel .gchev{font-size:10px;color:var(--ink-dim);transition:transform .22s ease;flex:none}
  .group.collapsed .gchev{transform:rotate(-90deg)}
  .group.collapsed > .gbody{display:none}
  .group.collapsed{padding-bottom:2px}
  .gbody{animation:fade .2s ease}
  @keyframes fade{from{opacity:0}to{opacity:1}}
  /* per-setting explanation text */
  .desc{font-family:var(--sans);font-size:11px;line-height:1.5;color:var(--ink-dim);margin:3px 0 10px}
  .ctlwrap{margin:2px 0}
  /* preset list with explanations */
  .presetlist{display:flex;flex-direction:column;gap:8px}
  .preset{display:grid;grid-template-columns:88px 1fr;gap:10px;align-items:center;
    padding:7px 8px;border:1px solid var(--stroke);border-radius:9px;background:rgba(120,160,200,0.04)}
  .preset button{width:100%}
  .preset .pd{font-family:var(--sans);font-size:10.5px;line-height:1.45;color:var(--ink-dim)}

  .row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:9px 0}
  .row label{font-size:12px;color:var(--ink)}
  .val{font-family:var(--mono);font-size:11px;color:var(--accent);min-width:44px;text-align:right}
  input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:3px;border-radius:3px;background:var(--stroke-strong);outline:none;margin:8px 0 2px}
  input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer;box-shadow:0 0 0 4px rgba(55,224,200,0.14)}
  input[type=range]::-moz-range-thumb{width:14px;height:14px;border:none;border-radius:50%;background:var(--accent);cursor:pointer}
  .slider{display:block}
  .slider .row{margin-bottom:0}

  .btns{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .btns.three{grid-template-columns:1fr 1fr 1fr}
  button.ctl{font-family:var(--mono);font-size:11px;letter-spacing:.04em;color:var(--ink);background:rgba(120,160,200,0.08);
    border:1px solid var(--stroke-strong);border-radius:9px;padding:9px 6px;cursor:pointer;transition:.15s;text-transform:uppercase}
  button.ctl:hover{background:rgba(55,224,200,0.14);border-color:var(--accent);color:#fff}
  button.ctl.primary{background:rgba(55,224,200,0.16);border-color:var(--accent);color:var(--accent)}
  button.ctl.wide{grid-column:1 / -1}

  .toggle{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:8px 0;cursor:pointer;user-select:none}
  .toggle span{font-size:12px}
  .sw{width:38px;height:21px;border-radius:20px;background:var(--stroke-strong);position:relative;transition:.2s;flex:none}
  .sw::after{content:"";position:absolute;top:2px;left:2px;width:17px;height:17px;border-radius:50%;background:#c9d6e6;transition:.2s}
  .toggle.on .sw{background:var(--accent)}
  .toggle.on .sw::after{transform:translateX(17px);background:#04140f}

  /* attraction matrix */
  #matrix{display:grid;gap:3px;margin-top:4px}
  .mcell{aspect-ratio:1;border-radius:4px;cursor:pointer;position:relative;transition:.12s;border:1px solid rgba(0,0,0,.25)}
  .mcell:hover{outline:2px solid #fff;outline-offset:-1px;z-index:2}
  .mhdr{display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:9px}
  .swatch{width:12px;height:12px;border-radius:3px}
  .mhint{font-family:var(--mono);font-size:9.5px;color:var(--ink-dim);margin-top:7px;line-height:1.5}

  /* HUD */
  #hud{position:fixed;top:14px;right:14px;z-index:9;font-family:var(--mono);font-size:11px;
    background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border:1px solid var(--stroke);border-radius:12px;padding:11px 13px;min-width:150px;line-height:1.85;color:var(--ink-dim)}
  #hud b{color:var(--accent);font-weight:500}
  #hud .hk{color:var(--ink)}

  /* pilot hint */
  #pilot{position:fixed;bottom:14px;left:50%;transform:translateX(-50%);z-index:9;
    font-family:var(--mono);font-size:11px;color:var(--ink-dim);
    background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border:1px solid var(--stroke);border-radius:999px;padding:8px 16px;display:flex;gap:14px;align-items:center;
    opacity:0;transition:.3s;pointer-events:none}
  #pilot.show{opacity:1}
  #pilot kbd{font-family:var(--mono);background:rgba(120,160,200,.14);border:1px solid var(--stroke-strong);
    border-radius:4px;padding:1px 6px;color:var(--ink);font-size:10px}

  /* collapse tab */
  #tab{position:fixed;top:20px;left:14px;z-index:11;width:38px;height:38px;border-radius:10px;
    background:var(--panel);border:1px solid var(--stroke-strong);backdrop-filter:blur(14px);
    display:none;align-items:center;justify-content:center;cursor:pointer;color:var(--accent)}
  #console.collapsed ~ #tab{display:flex}

  .foot{font-family:var(--mono);font-size:9px;color:var(--ink-dim);opacity:.7;margin-top:16px;line-height:1.6}
  a{color:var(--accent-2);text-decoration:none}

  @media (max-width:560px){
    #console{width:calc(100vw - 28px)}
    #hud{display:none}
  }