:root {
  --bg: #f6f3ff;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6b6b70;
  --border: #e0ded8;
  --accent: #e5352a;
  --accent-text: #ffffff;
  --warn: #9a5b00;
  --error: #b3261e;
  --status: #2d6a3e;
  --log-bg: #fbfbf9;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #120e2b;
    --card: #1e1748;
    --text: #ececef;
    --muted: #9b9ba3;
    --border: #2e2e33;
    --accent: #ff5a4a;
    --accent-text: #141416;
    --warn: #e3a54a;
    --error: #ff8a80;
    --status: #7fd29a;
    --log-bg: #17171a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header, main, footer { max-width: 860px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 32px; }
h1 { margin: 0; font-size: 28px; }
h1 .sub { font-weight: 400; color: var(--muted); font-size: 18px; }
h2 { margin: 0 0 8px; font-size: 17px; }
.badge {
  display: inline-block; margin: 8px 0 16px; padding: 2px 10px;
  border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font-size: 13px;
}
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; margin-bottom: 16px;
}
.hint, .muted { color: var(--muted); }
.hint { margin-top: 0; }
.line { margin: 8px 0 0; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.spread { justify-content: space-between; margin-bottom: 8px; }
.spread h2 { margin: 0; }
button {
  font: inherit; padding: 7px 14px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: .45; cursor: not-allowed; }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
details { margin-top: 12px; }
details .row { margin-top: 8px; }
summary { cursor: pointer; color: var(--muted); }
.check { display: inline-flex; gap: 6px; align-items: center; color: var(--muted); font-size: 14px; }
.alert {
  border: 1px solid var(--error); color: var(--error); border-radius: 12px; padding: 12px 16px;
}
#log {
  background: var(--log-bg); border: 1px solid var(--border); border-radius: 8px;
  height: 340px; overflow: auto; padding: 8px 10px;
  font: 12.5px/1.45 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre-wrap; word-break: break-all;
}
.log-status { color: var(--status); }
.log-warn { color: var(--warn); }
.log-error { color: var(--error); }
.log-data { color: var(--muted); }
footer { color: var(--muted); font-size: 13px; padding-bottom: 32px; }