:root {
  --bg: #0f172a;
  --card: #1e293b;
  --border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --danger: #ef4444;
  --ok: #22c55e;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 16px;
}
.container { max-width: 900px; margin: 0 auto; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}
h1 { margin: 0 0 4px; font-size: 1.6rem; }
.sub { color: var(--muted); font-size: 0.9rem; margin-bottom: 12px; }
label { display: block; font-size: 0.85rem; color: var(--muted); margin: 10px 0 4px; }
textarea, input, select {
  width: 100%;
  background: #0b1220;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  font-family: inherit;
  font-size: 0.95rem;
}
textarea { min-height: 140px; resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.row > * { flex: 1 1 160px; }
.row .btns { flex: 0 0 auto; display: flex; gap: 8px; flex-wrap: wrap; }
button {
  background: var(--accent);
  color: white;
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
  font-size: 0.95rem;
}
button:hover { background: var(--accent-hover); }
button.secondary { background: #334155; }
button.secondary:hover { background: #475569; }
button.danger { background: var(--danger); }
.status { font-size: 0.9rem; margin-top: 8px; min-height: 1.2em; }
.status.ok { color: var(--ok); }
.status.err { color: var(--danger); }
.note { color: var(--muted); font-size: 0.8rem; margin-top: 6px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 640px) { .grid2 { grid-template-columns: 1fr; } }
.toggle { display: flex; align-items: center; gap: 6px; font-size: 0.85rem; color: var(--muted); }
.toggle input { width: auto; }
footer { color: var(--muted); font-size: 0.75rem; text-align: center; margin-top: 16px; }
a { color: var(--accent); }