:root {
  --primary: #0070D2;
  --primary-hover: #005FB8;
  --success: #00837B;
  --error: #B91C1C;
  --canvas: #F4F6FA;
  --surface: #FFFFFF;
  --border: #DCE2EB;
  --ink: #1F2D3D;
  --ink-muted: #53657A;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--canvas);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

.band { height: 3px; background: linear-gradient(90deg, #002855 0%, #0047BA 50%, #00B4A0 100%); }
.header { padding: 20px 24px; background: var(--surface); border-bottom: 1px solid var(--border); }
.logo { display: block; height: 28px; width: auto; }
.main { flex: 1; width: 100%; max-width: 640px; margin: 0 auto; padding: 40px 16px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px;
  box-shadow: 0 1px 2px rgba(11, 25, 41, 0.05);
}

h1 { margin: 0 0 4px; font-size: 21px; font-weight: 600; }
p { margin: 0 0 12px; }
.label { font-weight: 500; }
.muted { color: var(--ink-muted); }
.small { font-size: 13px; }

.drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  margin: 20px 0 8px;
  padding: 32px 16px;
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 120ms ease, background-color 120ms ease;
}
.drop:hover, .drop.active { border-color: var(--primary); }
.drop:focus-within { outline: 2px solid var(--primary); outline-offset: 2px; }
.drop-title { color: var(--primary); font-weight: 600; }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }

.files { list-style: none; margin: 12px 0 0; padding: 0; }
.file { padding: 10px 0; border-top: 1px solid var(--border); }
.file-row { display: flex; justify-content: space-between; gap: 12px; }
.file-name { overflow-wrap: anywhere; }
.file-status { flex: none; color: var(--ink-muted); font-size: 13px; }
.file.done .file-status { color: var(--success); font-weight: 600; }
.file.failed .file-status { color: var(--error); font-weight: 600; }
.bar { height: 3px; margin-top: 6px; border-radius: 2px; background: var(--border); overflow: hidden; }
.bar > div { height: 100%; width: 0; background: var(--primary); transition: width 120ms linear; }
.file.done .bar, .file.failed .bar { display: none; }

.note { margin: 20px 0 0; color: var(--ink-muted); font-size: 13px; }
.footer { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 20px; color: var(--ink-muted); font-size: 12px; }
.partner { height: 18px; width: auto; }
.noscript { text-align: center; }

@media (max-width: 480px) { .card { padding: 20px; } .main { padding: 24px 16px; } }