@font-face{font-family:"Manrope";src:url(fonts/manrope.woff2) format("woff2");font-weight:400 700;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url(fonts/jetbrains-mono.woff2) format("woff2");font-weight:400 500;font-display:swap}
/* Layout: full-bleed 3D stage, a thin top bar for versions + shading, a left review rail that becomes a bottom drawer on phones. Single dark studio theme, by choice. */
:root{
  --bg:#141518; --stage:#1b1d21; --rail:#1f2126; --line:#2c2f36;
  --fg:#e8e6e1; --fg-dim:#8d9099; --accent:#e4b84a; --accent-ink:#1a1407;
  --ghost:#4fb3c9; --ok:#6fbf73; --warn:#e0975a;
  --ui:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  color-scheme:dark;
}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:14px/1.45 var(--ui);overflow:hidden;
  padding-left:max(0px,env(safe-area-inset-left,0px));padding-right:max(0px,env(safe-area-inset-right,0px))}
*{box-sizing:border-box}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

#app{position:relative;height:100%;display:flex;flex-direction:column}
#stage{position:absolute;inset:0;background:var(--stage)}
#stage canvas{display:block;width:100%;height:100%}

/* top bar */
#top{position:relative;z-index:3;display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  padding:10px max(16px,env(safe-area-inset-right,0px)) 10px max(16px,env(safe-area-inset-left,0px));
  background:linear-gradient(var(--bg),rgba(20,21,24,.82));backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
#top h1{margin:0;font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
#top h1 small{font-weight:500;color:var(--fg-dim);margin-left:8px}
.slot{display:flex;align-items:center;gap:8px;min-width:0}
.slot .tag{font:600 11px/1 var(--mono);letter-spacing:.08em;padding:5px 7px;border-radius:4px;background:var(--line);color:var(--fg-dim)}
.slot.a .tag{background:var(--accent);color:var(--accent-ink)}
.slot.b .tag{background:var(--ghost);color:#06202a}
.slot label{display:inline-flex;align-items:center;gap:6px;border:1px dashed var(--line);border-radius:6px;padding:5px 10px;cursor:pointer;max-width:220px;min-width:0}
.slot label:hover{border-color:var(--fg-dim)}
.slot label span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}
.slot input{display:none}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.seg button{background:transparent;border:0;padding:6px 11px;font-size:13px;font-weight:500;color:var(--fg-dim)}
.seg button+button{border-left:1px solid var(--line)}
.seg button[aria-pressed="true"]{background:var(--fg);color:var(--bg)}
.seg kbd{font:500 10px var(--mono);opacity:.6;margin-left:5px}
.spacer{flex:1}
.ghostbtn{background:transparent;border:1px solid var(--line);border-radius:6px;padding:6px 10px;font-size:13px;color:var(--fg-dim)}
.ghostbtn[aria-pressed="true"]{color:var(--fg);border-color:var(--fg-dim)}

/* review rail */
#rail{position:absolute;z-index:2;top:62px;bottom:16px;left:max(16px,env(safe-area-inset-left,0px));width:270px;
  display:flex;flex-direction:column;gap:14px;overflow-y:auto;padding:14px;border-radius:10px;
  background:rgba(31,33,38,.92);border:1px solid var(--line);backdrop-filter:blur(10px)}
#rail h2{margin:0 0 8px;font:600 11px/1 var(--ui);letter-spacing:.1em;text-transform:uppercase;color:var(--fg-dim)}
.section{display:flex;flex-direction:column;gap:6px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:3px 12px;font-size:12.5px}
.kv dt{color:var(--fg-dim)}
.kv dd{margin:0;font-family:var(--mono);font-size:12px;font-variant-numeric:tabular-nums;text-align:right}
#layers{display:flex;flex-direction:column;gap:2px;max-height:220px;overflow-y:auto}
#layers label{display:flex;align-items:center;gap:8px;padding:4px 6px;border-radius:4px;font-size:12.5px;cursor:pointer}
#layers label:hover{background:var(--line)}
#layers label span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#layers label em{font:11px var(--mono);color:var(--fg-dim);font-style:normal}
#layers input{accent-color:var(--accent)}
.empty{color:var(--fg-dim);font-size:12.5px;padding:4px 6px}
.row{display:flex;align-items:center;gap:8px}
.row label{font-size:12.5px;color:var(--fg-dim);min-width:52px}
input[type=range]{flex:1;accent-color:var(--accent);min-width:0}
.views{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}
.views button{background:var(--line);border:0;border-radius:4px;padding:6px 0;font-size:12px}
.views button:hover{background:#383c45}
.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:4px}
.compare button{background:var(--line);border:1px solid transparent;border-radius:4px;padding:6px 0;font-size:12px}
.compare button[aria-pressed="true"]{border-color:var(--accent);color:var(--accent)}
textarea{width:100%;min-height:84px;resize:vertical;background:var(--stage);border:1px solid var(--line);border-radius:6px;padding:8px;font-size:12.5px;line-height:1.4}
textarea::placeholder{color:var(--fg-dim)}
.hint{font-size:11.5px;color:var(--fg-dim);line-height:1.4}
.hint kbd{font:500 10.5px var(--mono);background:var(--line);padding:1px 4px;border-radius:3px}

/* status strip */
#status{position:absolute;z-index:2;bottom:16px;right:max(16px,env(safe-area-inset-right,0px));
  font:12px var(--mono);color:var(--fg-dim);background:rgba(20,21,24,.7);padding:5px 9px;border-radius:5px;pointer-events:none;
  font-variant-numeric:tabular-nums}
#drop{position:absolute;inset:0;z-index:4;display:none;align-items:center;justify-content:center;
  background:rgba(228,184,74,.12);border:2px dashed var(--accent);font-weight:600;font-size:18px;pointer-events:none}
#drop.on{display:flex}
#toast{position:absolute;z-index:5;top:72px;left:50%;transform:translateX(-50%);background:var(--fg);color:var(--bg);
  padding:7px 12px;border-radius:6px;font-size:13px;opacity:0;transition:opacity .2s;pointer-events:none;max-width:90%}
#toast.on{opacity:1}
#railToggle{display:none}

@media (max-width:760px){
  #top{gap:8px}
  #top h1 small{display:none}
  .slot label{max-width:130px}
  #rail{top:auto;left:max(8px,env(safe-area-inset-left,0px));right:max(8px,env(safe-area-inset-right,0px));width:auto;
    bottom:max(8px,env(safe-area-inset-bottom,0px));max-height:46%;transform:translateY(calc(100% + 16px));transition:transform .25s}
  #rail.open{transform:none}
  #railToggle{display:inline-block;position:absolute;z-index:3;bottom:max(16px,env(safe-area-inset-bottom,0px));left:max(16px,env(safe-area-inset-left,0px))}
  #status{bottom:max(16px,env(safe-area-inset-bottom,0px))}
}
@media (prefers-reduced-motion:reduce){#rail,#toast{transition:none}}

/* load progress */
#progress{position:absolute;z-index:5;left:50%;top:50%;transform:translate(-50%,-50%);width:min(360px,80%);
  display:none;flex-direction:column;gap:8px;padding:14px 16px;border-radius:10px;background:rgba(31,33,38,.95);border:1px solid var(--line)}
#progress.on{display:flex}
#progress .lbl{font-size:12.5px;color:var(--fg-dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#progress .bar{height:4px;border-radius:2px;background:var(--line);overflow:hidden}
#progress .bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .15s}
#progress.indeterminate .bar i{width:30%;animation:sr-indet 1.1s ease-in-out infinite}
@keyframes sr-indet{0%{transform:translateX(-100%)}100%{transform:translateX(340%)}}

/* inside the macOS app the window title bar already names the app */
html.native #top h1{display:none}
html.native #top{padding-top:8px;padding-bottom:8px}
html.native{-webkit-user-select:none;user-select:none}
html.native textarea{-webkit-user-select:text;user-select:text}

/* layer tree */
#layerBar{display:flex;align-items:center;gap:6px;margin-bottom:4px}
#layerBar[hidden]{display:none}
#layerBar .seg button{padding:4px 8px;font-size:11.5px}
#layerBar input{flex:1;min-width:0;background:var(--stage);border:1px solid var(--line);border-radius:5px;padding:4px 7px;font-size:12px}
#layerBar .ghostbtn{padding:4px 8px;font-size:11.5px}
#layers{max-height:min(38vh,420px)}
.lrow{display:flex;align-items:center;gap:6px;padding:3px 6px 3px 4px;border-radius:4px;font-size:12.5px}
.lrow:hover{background:var(--line)}
.lrow .tw{flex:none;width:14px;padding:0;border:0;background:none;color:var(--fg-dim);font-size:10px;line-height:1}
.lrow input{flex:none;accent-color:var(--accent);margin:0}
.lrow .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:default}
.lrow em{flex:none;font:11px var(--mono);color:var(--fg-dim);font-style:normal}
.lrow.auto .nm{font-style:italic;color:var(--fg-dim)}
.lrow.off .nm{opacity:.45}
.lrow .sw{flex:none;width:10px;height:10px;border-radius:2px;border:1px solid rgba(255,255,255,.18)}

/* car colour */
#paints{display:grid;grid-template-columns:repeat(7,1fr);gap:5px}
#paints button{aspect-ratio:1;border-radius:6px;border:1px solid rgba(255,255,255,.16);padding:0;min-width:0}
#paints button[aria-pressed="true"]{outline:2px solid var(--accent);outline-offset:2px}
#paints button.orig{background:linear-gradient(135deg,var(--stage) 0 46%,var(--fg-dim) 46% 54%,var(--stage) 54%)}
#finish button{padding:4px 9px;font-size:11.5px}
#finish button:disabled{opacity:.4;cursor:default}
#paintCol{background:none;border:1px solid var(--line);border-radius:4px;height:26px;width:44px;padding:0}
.lrow .pb{flex:none;border:0;background:none;padding:0 2px;font-size:11px;opacity:.25;filter:grayscale(1)}
.lrow .pb[aria-pressed="true"]{opacity:1;filter:none}
.lrow .pb[aria-pressed="mixed"]{opacity:.6;filter:none}
.lrow .pb{visibility:hidden}
.lrow:hover .pb,.lrow .pb[aria-pressed="true"],.lrow .pb[aria-pressed="mixed"]{visibility:visible}
#wallRow[hidden]{display:none}
#floorRow[hidden]{display:none}
#puddleRow[hidden]{display:none}
.lrow .gb{flex:none;border:0;background:none;padding:0 2px;font-size:12px;color:var(--fg-dim);opacity:.45;visibility:hidden}
.lrow:hover .gb,.lrow .gb[aria-pressed="true"],.lrow .gb[aria-pressed="mixed"]{visibility:visible}
.lrow .gb[aria-pressed="true"]{opacity:1;color:var(--fg)}
.lrow .gb[aria-pressed="mixed"]{opacity:.75}
body.no-rail #rail{display:none}

/* material chips, symmetry, library popup, picked-part card */
.lrow .chip,#pickCard .chip{flex:none;width:13px;height:13px;border-radius:50%;padding:0;border:1px solid rgba(255,255,255,.28);background:#666;cursor:pointer}
.chip.own{box-shadow:0 0 0 2px var(--rail),0 0 0 3.5px var(--accent)}
.chip.mixed{background:conic-gradient(#d8d8d8 0 25%,#333 0 50%,#8a1216 0 75%,#7d8c96 0)!important}
.chip.glass{background-image:linear-gradient(135deg,rgba(255,255,255,.55) 0 28%,transparent 28%)}
.lrow .mb,#pickCard .mb{flex:none;border:0;background:none;padding:0 2px;font-size:12px;line-height:1;color:var(--fg-dim);opacity:.5}
.lrow .mb{visibility:hidden}
.lrow:hover .mb,.lrow .mb[aria-pressed="true"],.lrow .mb[aria-pressed="mixed"]{visibility:visible}
.mb[aria-pressed="true"]{opacity:1!important;color:var(--accent)!important}
.mb[aria-pressed="mixed"]{opacity:.8!important;color:var(--warn)!important}
.lrow.sel{background:rgba(228,184,74,.16)}
.lrow.sel .nm{color:var(--accent)}
.lrow .nm{cursor:pointer}
#layerBar{flex-wrap:wrap}
#lookBar{display:flex;gap:6px;margin-top:6px}
#lookBar[hidden]{display:none}
#lookBar .ghostbtn{padding:4px 8px;font-size:11.5px}
#matPop{position:fixed;z-index:20;width:190px;max-height:min(70vh,520px);overflow-y:auto;padding:6px;border-radius:9px;background:rgba(31,33,38,.98);border:1px solid var(--line);box-shadow:0 10px 30px rgba(0,0,0,.5);display:flex;flex-direction:column;gap:1px}
#matPop[hidden]{display:none}
#matPop h3{margin:7px 6px 3px;font:600 10px/1 var(--ui);letter-spacing:.1em;text-transform:uppercase;color:var(--fg-dim)}
#matPop button{display:flex;align-items:center;gap:8px;border:0;background:none;text-align:left;padding:5px 6px;border-radius:5px;font-size:12.5px}
#matPop button:hover{background:var(--line)}
#matPop button[aria-pressed="true"]{background:rgba(228,184,74,.18);color:var(--accent)}
#matPop button i{flex:none;width:13px;height:13px;border-radius:50%;border:1px solid rgba(255,255,255,.28)}
#matPop button.plain i{background:none;border-style:dashed}
#pickCard{position:absolute;z-index:3;left:50%;bottom:18px;transform:translateX(-50%);display:flex;align-items:center;gap:10px;max-width:min(680px,calc(100% - 32px));
  padding:8px 10px 8px 12px;border-radius:10px;background:rgba(31,33,38,.94);border:1px solid var(--line);backdrop-filter:blur(10px)}
#pickCard[hidden]{display:none}
#pickCard .chip{width:18px;height:18px}
#pickCard .pc-txt{display:flex;flex-direction:column;min-width:0}
#pickCard b{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#pickCard span{font-size:11.5px;color:var(--fg-dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#pickCard .mb{font-size:15px;opacity:.7}
#pickCard .pc-btn{border:1px solid var(--line);background:none;border-radius:5px;padding:3px 8px;font-size:11.5px;color:var(--fg-dim)}
#pickCard .pc-btn[hidden]{display:none}
#pickCard .pc-x{border:0;background:none;color:var(--fg-dim);font-size:12px;padding:2px 4px}
#accentCol{background:none;border:1px solid var(--line);border-radius:4px;height:26px;width:44px;padding:0}
#layerBar input{flex:1 1 70px}
#matPop{max-height:min(88vh,640px)}
.chip.mixed{background:linear-gradient(135deg,#c9c9c9 0 50%,#3a3a3c 50%)!important}
.addbtn{border:1px dashed var(--line);background:none;border-radius:6px;width:26px;height:28px;padding:0;color:var(--fg-dim);font-size:15px;line-height:1}
.addbtn:hover{border-color:var(--fg-dim);color:var(--fg)}
.addbtn[hidden]{display:none}
.lrow.file .nm{font-weight:600}
.lrow .fx{flex:none;border:0;background:none;color:var(--fg-dim);font-size:11px;padding:0 3px;visibility:hidden}
.lrow:hover .fx{visibility:visible}

/* panel as three tabs; the tree takes all the height that is left */
#rail{overflow:hidden;gap:12px;padding:12px}
#tabs{display:flex;border:1px solid var(--line);border-radius:7px;overflow:hidden;flex:none}
#tabs button{flex:1;background:transparent;border:0;padding:7px 0;font-size:12.5px;font-weight:600;color:var(--fg-dim)}
#tabs button+button{border-left:1px solid var(--line)}
#tabs button[aria-pressed="true"]{background:var(--fg);color:var(--bg)}
.pane{flex:1;min-height:0;display:flex;flex-direction:column;gap:16px;overflow-y:auto}
.pane[hidden]{display:none}
.pane[data-pane="parts"]{overflow:hidden}
.section.grow{flex:1;min-height:0}
#layers{flex:1;min-height:0;max-height:none}
#layerBar{flex-wrap:nowrap}
#lookBar{align-items:center;margin-top:2px}
.check{display:flex;align-items:center;gap:8px;font-size:12.5px;cursor:pointer}
.check input{accent-color:var(--accent);margin:0}
#paintInfo:empty,#unitHint:empty{display:none}
.for-zebra,.for-render,.for-colour,.for-none{display:none}
body[data-mode="zebra"] .for-zebra,body[data-mode="render"] .for-render,body[data-mode="render"] .for-colour,body[data-mode="paint"] .for-colour{display:flex}
body[data-mode="clay"] .for-none,body[data-mode="highlight"] .for-none{display:block}
#compare button{padding:6px 10px}
#lookBar .ghostbtn{white-space:nowrap}

/* tree rows: every control takes a click on a 22 px square, whatever the size of its symbol */
.lrow{gap:2px;min-height:26px;padding:1px 4px 1px 2px}
.lrow .tw,.lrow .mb,.lrow .fx{width:20px;height:22px;padding:0;display:flex;align-items:center;justify-content:center}
.lrow .cbw{flex:none;width:22px;height:22px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.lrow .nm{margin-left:2px}
.lrow em{margin:0 3px}
.lrow .chip{position:relative;margin:0 5px}
.lrow .chip::after{content:"";position:absolute;inset:-6px}
@media (min-width:761px){#rail{width:288px}} /* the larger click areas took 16 px from the names; the panel gives it back */
.chip.lamp{box-shadow:0 0 5px 1px currentColor}
#lights[aria-pressed="true"]{color:var(--accent);border-color:var(--accent)}

/* browser-only parts: inside the Mac app the menu bar does this */
html.native .web-only{display:none!important}
#webMenu{position:absolute;right:0;top:calc(100% + 6px);z-index:20;min-width:220px;padding:6px;border-radius:9px;background:rgba(31,33,38,.98);border:1px solid var(--line);box-shadow:0 10px 30px rgba(0,0,0,.5);display:flex;flex-direction:column;gap:1px}
#webMenu[hidden]{display:none}
#webMenu button{display:flex;justify-content:space-between;gap:16px;border:0;background:none;text-align:left;padding:6px 8px;border-radius:5px;font-size:12.5px}
#webMenu button:hover{background:var(--line)}
#webMenu kbd{font:500 10.5px var(--mono);color:var(--fg-dim)}
#webMenu hr{border:0;border-top:1px solid var(--line);margin:4px 2px}