:root{--bg:#0f172a;--card:#0b1220;--muted:#94a3b8;--accent:#06b6d4}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,sans-serif;background:var(--bg);color:#f8fafc}
.container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.card{width:100%;max-width:720px;background:#0f172a;border:1px solid rgba(255,255,255,0.04);padding:28px;border-radius:12px}
header h1{margin:0;font-size:20px}
.muted{color:var(--muted);font-size:12px}
.drop-zone{border:2px dashed rgba(148,163,184,0.08);padding:24px;border-radius:8px;text-align:center;cursor:pointer}
.drop-zone.active{border-color:var(--accent);background:#071127}
.file-info{display:flex;justify-content:space-between;align-items:center;padding:8px;margin-top:12px;border-radius:6px;background:#071127}
.hidden{display:none}
button{background:var(--accent);color:#042f2e;padding:10px 14px;border-radius:8px;border:0;cursor:pointer}
.status{margin-top:12px;padding:10px;border-radius:8px}