:root{
  --bg:#0e0f12;--bg2:#15171b;--bg3:#1c1f24;--line:#2a2e35;--txt:#e6e7ea;--muted:#8b919c;
  --acc:#d8ff5a;--acc2:#7cf2c4;--danger:#ff6b6b;--radius:8px;
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Inter,Roboto,sans-serif;font-size:13px;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:var(--bg);color:var(--txt)}
body{display:flex;flex-direction:column;overflow:hidden}
button,select,input{font:inherit;color:inherit}
.topbar{display:flex;align-items:center;gap:12px;padding:8px 12px;background:var(--bg2);border-bottom:1px solid var(--line);flex:0 0 auto}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;letter-spacing:.04em}
.logo{width:16px;height:16px;background:
  linear-gradient(45deg,var(--acc) 25%,transparent 25%,transparent 75%,var(--acc) 75%),
  linear-gradient(45deg,var(--acc) 25%,#000 25%,#000 75%,var(--acc) 75%);background-size:6px 6px;background-position:0 0,3px 3px;border-radius:3px}
.topbar-mid{display:flex;align-items:center;gap:8px;flex:1}
.topbar-right{display:flex;align-items:center;gap:6px}
.btn{background:var(--bg3);border:1px solid var(--line);border-radius:var(--radius);padding:6px 10px;cursor:pointer;white-space:nowrap}
.btn:hover{border-color:#3d434d;background:#23272e}
.btn.primary{background:var(--acc);color:#111;border-color:var(--acc);font-weight:600}
.btn.primary:hover{filter:brightness(1.08)}
.btn.small{padding:3px 7px;font-size:12px}
.btn.danger{color:var(--danger)}
.file-btn{position:relative;overflow:hidden}
.file-btn input{position:absolute;inset:0;opacity:0;cursor:pointer}
.meter{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}
select{background:var(--bg3);border:1px solid var(--line);border-radius:6px;padding:5px 6px}
input[type=number]{background:var(--bg3);border:1px solid var(--line);border-radius:6px;padding:4px 6px;width:72px}
input[type=text]{background:var(--bg3);border:1px solid var(--line);border-radius:6px;padding:4px 6px;width:100%}
input[type=color]{width:28px;height:24px;padding:0;border:1px solid var(--line);border-radius:6px;background:none;cursor:pointer}
input[type=range]{width:100%;accent-color:var(--acc)}

.layout{display:flex;flex:1;min-height:0}
.panel{width:330px;flex:0 0 330px;overflow-y:auto;background:var(--bg2);border-right:1px solid var(--line);padding:6px 0 40px}
.panel::-webkit-scrollbar{width:8px}.panel::-webkit-scrollbar-thumb{background:#2e333b;border-radius:4px}
.section{border-bottom:1px solid var(--line)}
.section>summary{cursor:pointer;padding:9px 12px;font-weight:600;list-style:none;display:flex;align-items:center;gap:8px;user-select:none}
.section>summary::before{content:"";width:0;height:0;border-left:5px solid var(--muted);border-top:4px solid transparent;border-bottom:4px solid transparent;transition:transform .15s}
.section[open]>summary::before{transform:rotate(90deg)}
.section>summary .sub{color:var(--muted);font-weight:400;font-size:11px;margin-left:auto}
.section-body{padding:2px 12px 10px;display:flex;flex-direction:column;gap:7px}
.ctl{display:grid;grid-template-columns:104px 1fr;align-items:center;gap:6px;min-height:24px}
.ctl label{color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ctl .val{color:var(--txt);font-size:11px;font-variant-numeric:tabular-nums;min-width:38px;text-align:right}
.ctl .range-wrap{display:flex;align-items:center;gap:6px}
.ctl.hidden{display:none}
.ctl.check{grid-template-columns:104px auto}
.ctl.full{grid-template-columns:1fr}
.ctl select{width:100%}
.ctl .inline{display:flex;gap:6px;align-items:center}
.hint{color:var(--muted);font-size:11px;line-height:1.4;margin:2px 0}
.stops{display:flex;flex-direction:column;gap:4px}
.stop{display:flex;align-items:center;gap:6px}
.stop input[type=range]{flex:1}
.stop .pos{width:34px;font-size:11px;color:var(--muted);text-align:right}
.swatches{display:flex;flex-wrap:wrap;gap:4px}
.swatch{display:flex;align-items:center;gap:3px}
.gradbar{height:14px;border-radius:4px;border:1px solid var(--line)}
.btnrow{display:flex;gap:6px;flex-wrap:wrap}

.stage{flex:1;display:flex;flex-direction:column;min-width:0}
.stage-tools{display:flex;gap:16px;align-items:center;padding:6px 12px;border-bottom:1px solid var(--line);background:var(--bg2);color:var(--muted);font-size:12px}
.stage-tools label{display:flex;gap:6px;align-items:center}
.viewport{flex:1;overflow:auto;display:grid;place-items:center;background:#000;position:relative}
.viewport.checker{background-color:#777;background-image:linear-gradient(45deg,#999 25%,transparent 25%,transparent 75%,#999 75%),linear-gradient(45deg,#999 25%,transparent 25%,transparent 75%,#999 75%);background-size:20px 20px;background-position:0 0,10px 10px}
#out{image-rendering:pixelated;image-rendering:crisp-edges;box-shadow:0 0 0 1px #222,0 20px 60px rgba(0,0,0,.6)}
.viewport.recording::after{content:"● REC";position:absolute;top:10px;right:14px;color:#fff;background:#d33;padding:3px 8px;border-radius:6px;font-weight:700;font-size:12px}

.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%) translateY(20px);background:#222;border:1px solid var(--line);padding:8px 14px;border-radius:8px;opacity:0;transition:.2s;pointer-events:none;z-index:50}
.toast.show{opacity:1;transform:translateX(-50%)}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:grid;place-items:center;z-index:40}
.modal.hidden{display:none}
.modal-card{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:18px;width:360px;display:flex;flex-direction:column;gap:10px}
.modal-card h3{margin:0 0 4px}
.modal-card .row{display:flex;justify-content:space-between;align-items:center}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:6px}
.progress{height:6px;background:var(--bg3);border-radius:3px;overflow:hidden}
.progress>div{height:100%;width:0;background:var(--acc);transition:width .1s}
kbd{background:var(--bg3);border:1px solid var(--line);border-radius:4px;padding:0 4px;font-size:11px}

@supports (height:100dvh){body{height:100dvh}}
.topbar{flex-wrap:wrap;row-gap:8px}
.topbar-right{flex-wrap:wrap;margin-left:auto}
.stage-tools{flex-wrap:wrap;row-gap:4px}
.modal-card{max-width:calc(100vw - 32px)}

@media (max-width:860px){
  .layout{flex-direction:column}
  .stage{order:-1;flex:0 0 42%;min-height:0}
  .panel{width:100%;flex:1 1 auto;min-height:0;border-right:0;border-top:1px solid var(--line)}
  .topbar-mid{flex:1 1 100%;order:2}
  .topbar-mid select{flex:1;min-width:0}
  .topbar-right{flex:1 1 100%;order:3;margin-left:0}
  .topbar-right .btn{flex:1 1 auto;text-align:center}
  .brand{order:1}
  .stage-tools{gap:6px 12px;padding:6px 10px}
  .stage-tools #dims{flex:1 1 100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
}
@media (max-width:520px){
  .topbar{padding:8px 10px;gap:6px}
  .topbar-mid,.topbar-right{gap:5px}
  .btn{padding:7px 9px}
}
@media (pointer:coarse){
  .ctl{min-height:32px}
  .section>summary{padding:12px}
}