:root{
  --bg:#0c0e10;
  --panel:#15191d;
  --panel2:#1a1f24;
  --text:#f5f7f8;
  --muted:#aeb8c1;
  --line:#2a3239;
  --accent:#78d325;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:radial-gradient(circle at 50% -20%,#26322a 0,#101417 35%,#090b0d 75%);
  color:var(--text);
  min-height:100vh;
}
.shell{width:min(1150px,92vw);margin:auto;padding:42px 0 60px}
header{margin-bottom:24px}
.eyebrow{font-size:12px;letter-spacing:.18em;font-weight:800;color:var(--accent)}
h1{font-size:clamp(30px,5vw,54px);line-height:1.02;margin:8px 0 12px}
header p{color:var(--muted);max-width:720px;font-size:16px}
.panel{
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(28,33,38,.96),rgba(19,23,27,.96));
  border-radius:18px;
  box-shadow:0 18px 50px rgba(0,0,0,.25);
}
.controls{
  display:grid;
  grid-template-columns:1.15fr 1.55fr 1.2fr auto auto;
  gap:14px;
  align-items:end;
  padding:18px;
  margin-bottom:18px
}
.field{min-width:0}
label{display:block;font-size:13px;font-weight:700;margin-bottom:7px}
select,input[type=file]{
  width:100%;
  border:1px solid #38424a;
  background:#0f1316;
  color:#fff;
  border-radius:10px;
  padding:11px 12px
}
input[type=file]{font-size:12px}
small{display:block;color:#e4ad43;margin-top:6px;line-height:1.3}
.radioRow{height:42px;display:flex;align-items:center;gap:14px;background:#0f1316;border:1px solid #38424a;border-radius:10px;padding:0 12px}
.radioRow label{margin:0;font-size:12px;white-space:nowrap}
button{
  height:43px;border:0;border-radius:10px;padding:0 18px;font-weight:800;
  cursor:pointer;background:var(--accent);color:#0a1007
}
button.secondary{background:#e9edf0;color:#111}
button:disabled{opacity:.4;cursor:not-allowed}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid .panel{padding:16px}
h2{font-size:15px;margin:0 0 12px;color:#dfe5e9}
.preview{
  position:relative;aspect-ratio:4/3;border-radius:12px;overflow:hidden;
  display:flex;align-items:center;justify-content:center;border:1px solid #2f383f
}
.preview.checker{
  background-color:#e9ecef;
  background-image:linear-gradient(45deg,#d9dde0 25%,transparent 25%),
    linear-gradient(-45deg,#d9dde0 25%,transparent 25%),
    linear-gradient(45deg,transparent 75%,#d9dde0 75%),
    linear-gradient(-45deg,transparent 75%,#d9dde0 75%);
  background-size:24px 24px;background-position:0 0,0 12px,12px -12px,-12px 0
}
.preview.dark{background:#0a0d0f}
.preview img,.preview canvas{width:100%;height:100%;object-fit:contain;display:none}
.empty{color:#87929b;text-align:center;padding:30px}
.working{
  position:absolute;inset:0;background:rgba(6,9,11,.76);display:flex;align-items:center;
  justify-content:center;font-weight:800;letter-spacing:.04em
}
.hidden{display:none!important}
.privacy{color:#77828b;text-align:center;font-size:12px;margin:18px 0 0}
@media(max-width:950px){
  .controls{grid-template-columns:1fr 1fr}
  .controls button{width:100%}
}
@media(max-width:700px){
  .controls,.grid{grid-template-columns:1fr}
}