:root {
  --bg: #f4f5f9;
  --card: #ffffff;
  --text: #171923;
  --muted: #6b7280;
  --border: #e3e5ec;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-soft: #eef0ff;
  --ok: #15803d;
  --danger: #b91c1c;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117;
    --card: #181b24;
    --text: #e8eaf0;
    --muted: #9aa1b2;
    --border: #2a2f3c;
    --accent: #818cf8;
    --accent-hover: #a5b4fc;
    --accent-soft: #23264a;
    --ok: #4ade80;
    --danger: #f87171;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
[hidden] { display: none !important; }
a { color: var(--accent); }
code { font-size: 0.95em; }

.card {
  width: 100%;
  max-width: 520px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);
}
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; }
.brand h1 { font-size: 20px; margin: 0; letter-spacing: -0.01em; }
.badge {
  margin-left: auto;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  white-space: nowrap;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 34px 20px;
  text-align: center;
  transition: border-color .15s, background .15s;
  outline: none;
}
.dropzone:focus-visible, .dropzone.drag { border-color: var(--accent); background: var(--accent-soft); }
.dz-icon { width: 40px; height: 40px; color: var(--accent); }
.dz-title { font-weight: 600; margin: 8px 0 0; font-size: 16px; }
.dz-sub { margin: 2px 0 10px; color: var(--muted); }

.btn {
  font: inherit;
  font-weight: 600;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 10px;
  padding: 9px 16px;
  cursor: pointer;
  transition: background .15s, border-color .15s, opacity .15s;
}
.btn:hover { border-color: var(--muted); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
@media (prefers-color-scheme: dark) { .btn.primary { color: #0f1117; } }
.btn.ghost { border-color: transparent; color: var(--muted); padding: 6px 10px; }
.btn.danger { color: var(--danger); }
.btn.wide { width: 100%; margin-top: 16px; padding: 12px; }

.selected, .result, #dl-ready { margin-top: 4px; }
.file-row {
  display: flex; align-items: center; gap: 12px;
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px 14px;
}
.file-icon { font-size: 24px; }
.file-info { min-width: 0; flex: 1; }
.file-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

label { display: block; font-size: 13px; font-weight: 600; color: var(--muted); }
.options { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
.token { margin-top: 12px; }
select, input[type=text], input[type=password] {
  display: block; width: 100%; margin-top: 6px;
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 10px; padding: 9px 11px;
}
select:focus, input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.progress { margin-top: 18px; }
.progress-label { display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.bar { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; }
.bar > div { height: 100%; width: 0; background: var(--accent); transition: width .15s; }

.result .ok { margin-top: 0; }
.copy-row { display: flex; gap: 8px; margin-top: 6px; }
.copy-row input { margin-top: 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.row-gap { display: flex; gap: 10px; margin-top: 14px; }

.ok { color: var(--ok); font-weight: 600; }
.error { color: var(--danger); font-weight: 500; margin: 14px 0 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; margin-top: 18px; }
footer { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border); }

@media (max-width: 480px) {
  .card { padding: 20px; }
  .options { grid-template-columns: 1fr; }
  .badge { display: none; }
}