:root{
  --bg:#0f1115; --panel:#151922; --text:#e6e8ee; --muted:#97a0b0;
  --accent:#66b3ff; --green:#2ecc71; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius:12px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; color:var(--text);
  background:linear-gradient(180deg,#0b0b0c,#0f1115 30%,#10131a 100%);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial;
}
header,footer{padding:16px 20px}
header h1{margin:0 0 8px}
header p{margin:0;color:var(--muted)}
main{max-width:980px;margin:0 auto;padding:16px;display:grid;gap:16px}

.panel{
  background:var(--panel); border:1px solid #222836; border-radius:var(--radius);
  padding:16px; box-shadow:0 4px 20px rgba(0,0,0,.25);
}
.row{display:flex;gap:12px;align-items:center;margin-top:10px;flex-wrap:wrap}
label.file{display:flex;gap:12px;align-items:center}
input[type="file"]{padding:8px;border:1px dashed #31405a;border-radius:8px;background:#0f1522;color:var(--text)}
input[type="number"]{width:120px;padding:8px 10px;border:1px solid #2a3347;border-radius:8px;background:#0f1522;color:var(--text)}
button{
  cursor:pointer;border:0;border-radius:10px;padding:10px 14px;background:var(--accent);
  color:#071019;font-weight:700;transition:.15s transform ease,.15s opacity ease
}
button:disabled{opacity:.45;cursor:not-allowed}
button:hover:not(:disabled){transform:translateY(-1px)}
.meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:6px;margin-top:8px}
.muted{color:var(--muted)}

.log{
  min-height:120px;max-height:260px;overflow:auto;background:#0c0f16;border-radius:10px;border:1px solid #222836;
  padding:12px;line-height:1.35;font-family:var(--mono);white-space:pre-wrap
}
.progress{height:10px;background:#0c0f16;border-radius:999px;border:1px solid #27324a;margin-top:10px;overflow:hidden}
.progress>div{height:100%;width:0%;background:linear-gradient(90deg,#66b3ff,#2ecc71)}

.outputs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}
.outputs li{
  border:1px solid #222836;border-radius:10px;padding:10px;background:#0e1420;
  display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center
}
.outputs a{color:#d7e7ff;text-decoration:none;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.outputs .size{color:var(--muted);font-variant-numeric:tabular-nums;justify-self:end}
.outputs .btns{grid-column:1 / -1;display:flex;gap:8px;flex-wrap:wrap}
.outputs li button{padding:8px 10px;border-radius:8px;font-weight:600}