:root{
  --acc1:#7fb0ff; --acc2:#ff9ec7; --acc3:#8fe3c0;
  --ink:#2a3350; --ink-soft:#5b648a;
  --glass:rgba(255,255,255,.58);
  --glass-border:rgba(255,255,255,.72);
  --glass-shadow:0 22px 60px rgba(70,84,140,.20), 0 2px 10px rgba(70,84,140,.10);
  --track:rgba(50,62,110,.12);
  --mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
*{box-sizing:border-box; margin:0; padding:0}
html,body{height:100%; overflow:hidden}
body{
  font-family:'Outfit', system-ui, sans-serif;
  color:var(--ink);
  background:#eef3f7;
  -webkit-font-smoothing:antialiased;
}
#scene{position:fixed; inset:0; width:100%; height:100%; display:block; touch-action:none; cursor:grab}
#scene:active{cursor:grabbing}

/* ---------- brand ---------- */
.brand{
  position:fixed; top:18px; left:50%; transform:translateX(-50%);
  text-align:center; pointer-events:none; z-index:5;
  animation:drop .8s cubic-bezier(.2,.9,.3,1.2) both;
}
.brand h1{
  font-size:clamp(18px,2.4vw,26px); font-weight:700; letter-spacing:.02em;
  display:inline-flex; align-items:center; gap:.5em;
}
.brand h1 .badge{
  font-size:.55em; font-weight:600; padding:.25em .6em; border-radius:999px;
  background:linear-gradient(120deg,var(--acc1),var(--acc2)); color:#fff;
  box-shadow:0 4px 14px rgba(127,176,255,.45);
}
.brand p{font-size:12px; color:var(--ink-soft); letter-spacing:.14em; text-transform:uppercase; margin-top:2px}

/* ---------- glass panels ---------- */
.glass{
  position:fixed; z-index:10;
  background:var(--glass);
  backdrop-filter:blur(20px) saturate(1.5);
  -webkit-backdrop-filter:blur(20px) saturate(1.5);
  border:1px solid var(--glass-border);
  border-radius:20px;
  box-shadow:var(--glass-shadow);
  width:302px; max-height:calc(100vh - 40px);
  display:flex; flex-direction:column;
  transition:transform .45s cubic-bezier(.2,.9,.25,1), opacity .45s ease, background .5s ease;
}
#controls{top:20px; left:20px; animation:slideL .7s cubic-bezier(.2,.9,.3,1.15) both .05s}
#dashboard{top:20px; right:20px; width:288px; animation:slideR .7s cubic-bezier(.2,.9,.3,1.15) both .15s}
@keyframes slideL{from{opacity:0; transform:translateX(-30px)} to{opacity:1; transform:none}}
@keyframes slideR{from{opacity:0; transform:translateX(30px)} to{opacity:1; transform:none}}
@keyframes drop{from{opacity:0; transform:translate(-50%,-16px)} to{opacity:1; transform:translate(-50%,0)}}

.panel-head{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 16px 10px 18px; flex:none;
}
.panel-head h2{font-size:15px; font-weight:600; letter-spacing:.02em}
.panel-head h2::after{
  content:""; display:block; width:34px; height:3px; border-radius:3px; margin-top:5px;
  background:linear-gradient(90deg,var(--acc1),var(--acc2),var(--acc3));
}
.collapse{
  width:26px; height:26px; border:none; border-radius:9px; cursor:pointer;
  background:rgba(60,72,130,.10); color:var(--ink); font-size:15px; line-height:1;
  transition:background .2s, transform .2s;
}
.collapse:hover{background:rgba(60,72,130,.2)}
.panel-body{padding:2px 16px 16px; overflow-y:auto; overscroll-behavior:contain; scrollbar-width:thin}
.panel-body::-webkit-scrollbar{width:6px}
.panel-body::-webkit-scrollbar-thumb{background:rgba(60,72,130,.18); border-radius:6px}
.glass.collapsed .panel-body{display:none}
.glass.collapsed{width:auto; min-width:200px}

.group{margin-bottom:12px}
.group h3{
  font-size:10.5px; font-weight:600; letter-spacing:.16em; text-transform:uppercase;
  color:var(--ink-soft); margin:10px 0 8px;
}

/* ---------- sliders ---------- */
.slider{margin-bottom:9px}
.slider .row{display:flex; justify-content:space-between; font-size:12.5px; margin-bottom:4px}
.slider .row output{font-variant-numeric:tabular-nums; color:var(--ink-soft); font-weight:500}
.slider input[type=range]{
  -webkit-appearance:none; appearance:none; width:100%; height:5px; border-radius:5px;
  background:linear-gradient(90deg,var(--acc1) var(--fill,50%), var(--track) var(--fill,50%));
  outline:none; cursor:pointer;
}
.slider input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none; width:15px; height:15px; border-radius:50%;
  background:#fff; border:2px solid var(--acc1);
  box-shadow:0 2px 8px rgba(70,90,160,.35);
  transition:transform .15s;
}
.slider input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2)}
.slider input[type=range]::-moz-range-thumb{
  width:13px; height:13px; border-radius:50%; background:#fff; border:2px solid var(--acc1);
  box-shadow:0 2px 8px rgba(70,90,160,.35);
}

/* ---------- checkboxes ---------- */
.checks{display:grid; grid-template-columns:1fr 1fr; gap:6px 10px}
.chk{display:flex; align-items:center; gap:8px; font-size:12.5px; cursor:pointer; user-select:none; padding:3px 0}
.chk input{position:absolute; opacity:0; pointer-events:none}
.chk .box{
  width:17px; height:17px; flex:none; border-radius:6px;
  border:1.5px solid rgba(60,72,130,.35); background:rgba(255,255,255,.5);
  display:grid; place-items:center; transition:all .18s;
}
.chk .box svg{width:11px; height:11px; opacity:0; transform:scale(.4); transition:all .18s; stroke:#fff; stroke-width:3; fill:none}
.chk input:checked + .box{background:linear-gradient(135deg,var(--acc1),var(--acc2)); border-color:transparent; box-shadow:0 3px 10px rgba(127,176,255,.4)}
.chk input:checked + .box svg{opacity:1; transform:scale(1)}
.chk input:focus-visible + .box{outline:2px solid var(--acc1); outline-offset:2px}

/* ---------- buttons ---------- */
.btnrow{display:flex; gap:7px; margin-top:14px}
.btn.play{width:100%; background:linear-gradient(135deg,#59c2c9,#4f8dff); color:#fff; border:none; font-weight:600}
.btn.play.active{background:linear-gradient(135deg,#ff5d8f,#ff9c54)}
#hud{position:fixed; left:50%; bottom:22px; transform:translateX(-50%) translateY(80px);
  padding:10px 22px; border-radius:999px; font-size:13.5px; font-weight:500; letter-spacing:.2px;
  background:rgba(255,255,255,.6); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.55); color:#2a3350; box-shadow:0 10px 34px rgba(40,60,110,.18);
  transition:transform .35s cubic-bezier(.2,.9,.3,1.2), opacity .3s; opacity:0; pointer-events:none; z-index:40; white-space:nowrap}
#hud.show{transform:translateX(-50%) translateY(0); opacity:1}
#hud b{color:#4f8dff; font-weight:700}
body.night #hud{background:rgba(20,26,52,.66); border-color:rgba(140,160,255,.25); color:#dfe6ff}
body.night #hud b{color:#8fb4ff}
.btn{
  flex:1; border:none; cursor:pointer; font-family:inherit;
  font-size:12px; font-weight:600; padding:9px 6px; border-radius:12px;
  color:var(--ink); background:rgba(255,255,255,.65);
  border:1px solid rgba(255,255,255,.8);
  box-shadow:0 3px 10px rgba(70,84,140,.12);
  transition:transform .16s, box-shadow .16s, background .16s;
}
.btn:hover{transform:translateY(-2px); box-shadow:0 6px 16px rgba(70,84,140,.2)}
.btn:active{transform:translateY(0) scale(.97)}
.btn.primary{
  background:linear-gradient(120deg,var(--acc1),var(--acc2)); color:#fff; border-color:transparent;
  box-shadow:0 5px 18px rgba(127,176,255,.5);
}
.btn:focus-visible{outline:2px solid var(--acc1); outline-offset:2px}

/* ---------- dashboard ---------- */
.searchrow{display:flex; gap:7px; margin-bottom:6px}
.searchrow input{
  flex:1; min-width:0; border:1px solid rgba(60,72,130,.22); border-radius:11px;
  background:rgba(255,255,255,.6); padding:8px 11px; font:500 12.5px var(--mono);
  color:var(--ink); outline:none; transition:border .2s, box-shadow .2s;
}
.searchrow input:focus{border-color:var(--acc1); box-shadow:0 0 0 3px rgba(127,176,255,.25)}
.searchrow .btn{flex:none; padding:8px 15px}
.hint{font:11px var(--mono); color:var(--ink-soft); margin-bottom:10px; letter-spacing:.02em}
.hint b{color:var(--ink); font-weight:600}

.layers{display:grid; grid-template-columns:1fr 1fr; gap:5px 10px; margin-bottom:10px}

#minimap{
  width:100%; aspect-ratio:1; border-radius:14px; display:block; cursor:crosshair;
  background:rgba(255,255,255,.45); border:1px solid rgba(255,255,255,.7);
  box-shadow:inset 0 2px 8px rgba(70,84,140,.12);
}
.map-cap{display:flex; justify-content:space-between; font-size:10px; color:var(--ink-soft); margin-top:5px; letter-spacing:.08em; text-transform:uppercase}

#status{
  margin-top:10px; font-size:11.5px; color:var(--ink-soft);
  padding:7px 10px; border-radius:10px; background:rgba(255,255,255,.4);
  min-height:30px; line-height:1.35;
}

/* ---------- toast ---------- */
#toast{
  position:fixed; bottom:26px; left:50%; transform:translate(-50%,20px);
  background:var(--glass); backdrop-filter:blur(16px) saturate(1.4);
  border:1px solid var(--glass-border); border-radius:999px;
  padding:9px 20px; font-size:13px; font-weight:500; color:var(--ink);
  box-shadow:var(--glass-shadow); z-index:20;
  opacity:0; pointer-events:none; transition:opacity .3s, transform .3s;
}
#toast.show{opacity:1; transform:translate(-50%,0)}

#err{position:fixed; inset:auto 20px 20px 20px; z-index:30; display:none;
  background:#fff3f3; border:1px solid #f3b8b8; color:#8c2f39; border-radius:14px; padding:12px 16px; font-size:13px}

/* ---------- night theme ---------- */
body.night{
  --glass:rgba(18,24,52,.55);
  --glass-border:rgba(140,160,255,.22);
  --ink:#e7ebff; --ink-soft:#9aa6d8;
  --track:rgba(190,205,255,.16);
  --glass-shadow:0 22px 60px rgba(0,4,20,.55), 0 2px 10px rgba(0,4,20,.4);
  background:#070c22;
}
body.night .btn{background:rgba(40,50,96,.55); border-color:rgba(140,160,255,.2); color:var(--ink)}
body.night .btn.primary{background:linear-gradient(120deg,#5f8dff,#c76de0); color:#fff}
body.night .chk .box{background:rgba(30,38,76,.6); border-color:rgba(150,168,255,.35)}
body.night .searchrow input{background:rgba(28,36,72,.6); border-color:rgba(150,168,255,.25); color:var(--ink)}
body.night #minimap{background:rgba(16,22,48,.6); border-color:rgba(140,160,255,.2)}
body.night #status{background:rgba(28,36,72,.5)}
body.night .collapse{background:rgba(150,168,255,.14); color:var(--ink)}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .glass{width:min(302px, calc(50vw - 26px)); max-height:calc(100vh - 88px)}
  #controls{top:70px}
  #dashboard{top:70px}
  .brand{top:10px}
  .checks,.layers{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important; transition-duration:.01ms !important}
}