:root { --brand: #1f6feb; --bg: #f5f7fa; --ink: #1a1f29; --muted: #667085; --err: #b42318; --ok: #067647; }
* { box-sizing: border-box; }
body { margin: 0; font-family: Segoe UI, system-ui, sans-serif; background: var(--bg); color: var(--ink); }
.card { max-width: 560px; margin: 6vh auto; background: #fff; padding: 32px; border-radius: 12px; box-shadow: 0 2px 16px rgba(0,0,0,.08); }
h1 { margin: 0 0 4px; font-size: 22px; }
.sub { margin: 0 0 24px; color: var(--muted); font-size: 14px; }
label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 6px; }
input[type=text] { width: 100%; padding: 10px 12px; border: 1px solid #d0d5dd; border-radius: 8px; font-size: 15px; margin-bottom: 20px; }
.drop { border: 2px dashed #c3cad6; border-radius: 10px; padding: 32px; text-align: center; cursor: pointer; transition: .15s; display: flex; flex-direction: column; gap: 4px; }
.drop.over { border-color: var(--brand); background: #eef4ff; }
.drop strong { font-size: 15px; }
.drop span { color: var(--muted); font-size: 13px; }
.list { list-style: none; padding: 0; margin: 16px 0 0; }
.list li { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 8px 0; border-bottom: 1px solid #eef0f3; font-size: 14px; }
.list .sz { color: var(--muted); }
.list progress { grid-column: 1 / -1; width: 100%; height: 6px; }
button { margin-top: 20px; width: 100%; padding: 12px; background: var(--brand); color: #fff; border: 0; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; }
button:disabled { background: #aebfdc; cursor: not-allowed; }
#status { margin: 14px 0 0; font-size: 14px; min-height: 20px; }
#status.err { color: var(--err); }
#status.ok { color: var(--ok); }