:root{
--max-width: 980px;
--muted: #6b7280;
--card-bg: #f8fafc;
--accent: #4f46e5;
}
*{box-sizing:border-box}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial;color:#0f172a;background:#f1f5f9;padding:28px;display:flex;justify-content:center}
.container{width:100%;max-width:var(--max-width);background:white;padding:24px;border-radius:12px;box-shadow:0 6px 20px rgba(2,6,23,0.08)}
header h1{margin:0;font-size:20px}
.muted{color:var(--muted)}
.uploader{margin-top:18px}
.dropbox{border:2px dashed #cbd5e1;padding:28px;border-radius:10px;text-align:center;background:linear-gradient(180deg,#fff,#fbfdff)}
.dropbox button{background:none;border:none;color:var(--accent);cursor:pointer;font-weight:600}
.previews{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.card{background:var(--card-bg);padding:12px;border-radius:10px;border:1px solid #e6eef8}
.preview{min-height:200px;border-radius:8px;background:white;display:flex;align-items:center;justify-content:center;overflow:hidden}
.preview img{max-width:100%;max-height:400px;object-fit:contain}
.controls{display:flex;gap:8px;align-items:center;margin-top:14px}
.primary{background:var(--accent);color:white;border:none;padding:8px 12px;border-radius:8px;cursor:pointer}
.status{margin-top:12px;color:var(--muted)}
.small{font-size:12px;margin-top:12px}
@media(max-width:720px){.previews{grid-template-columns:1fr;}}