:root {
  --bg: #f5f5f4; --fg: #1c1917; --muted: #6b7280; --card: #ffffff;
  --line: #d6d3d1; --accent: #1f2937; --accent-fg: #ffffff; --ok: #166534; --err: #b91c1c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111315; --fg: #e7e5e4; --muted: #9ca3af; --card: #1b1e21;
    --line: #3a3f45; --accent: #e7e5e4; --accent-fg: #111315; --ok: #86efac; --err: #fca5a5;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh; display: flex; justify-content: center;
}
main { width: 100%; max-width: 560px; padding: 32px 16px 24px; }
h1 { margin: 0; font-size: 1.6rem; }
.sub { margin: 4px 0 24px; color: var(--muted); }
.drop {
  border: 2px dashed var(--line); border-radius: 14px; background: var(--card);
  padding: 40px 16px; text-align: center; cursor: pointer; outline: none;
  transition: border-color .15s, background .15s;
}
.drop:hover, .drop:focus-visible, .drop.over { border-color: var(--accent); }
.drop.over { background: color-mix(in srgb, var(--card) 85%, var(--accent)); }
.drop-title { font-size: 1.1rem; font-weight: 600; }
.drop-or { margin: 8px 0; color: var(--muted); }
.formats { margin-top: 16px; font-size: .85rem; color: var(--muted); }
.btn {
  display: inline-block; border: 1px solid var(--accent); background: transparent; color: var(--accent);
  padding: 10px 20px; border-radius: 10px; font: inherit; font-weight: 600; cursor: pointer;
  text-decoration: none;
}
.btn.primary { background: var(--accent); color: var(--accent-fg); }
.link { background: none; border: 0; color: var(--muted); text-decoration: underline; font: inherit; cursor: pointer; margin-top: 12px; display: block; }
.card { margin-top: 16px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px 16px; text-align: center; }
.card[hidden], [hidden] { display: none !important; }
.fname { font-weight: 600; word-break: break-word; }
.bar { margin: 14px 0 8px; height: 10px; background: var(--line); border-radius: 6px; overflow: hidden; }
#barfill { height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.stage { color: var(--muted); font-size: .95rem; margin-bottom: 12px; word-break: break-word; }
.ok { font-weight: 700; color: var(--ok); margin-bottom: 4px; }
.error .ok { color: var(--err); }
footer { margin-top: 32px; text-align: center; color: var(--muted); font-size: .85rem; }
.badge { display: inline-block; padding: 2px 10px; border: 1px solid var(--line); border-radius: 999px; }
.badge.ready { color: var(--ok); border-color: var(--ok); }