:root {
  color-scheme: dark;
  --bg: #0b1020;
  --card: #111a33;
  --text: #e8ecff;
  --muted: #a8b3e6;
  --border: rgba(255, 255, 255, 0.08);
  --accent: #6aa3ff;
  --danger: #ff6a6a;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: radial-gradient(1200px 600px at 20% 0%, #182553, transparent), var(--bg);
  color: var(--text);
}
.container { max-width: 720px; margin: 48px auto; padding: 0 16px; }
.header { margin-bottom: 16px; }
.header h1 { margin: 0 0 4px; font-size: 28px; }
.muted { color: var(--muted); margin: 0; }

.card {
  background: rgba(17, 26, 51, 0.72);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  backdrop-filter: blur(8px);
}
.card h2 { margin: 0 0 12px; font-size: 18px; }

form { display: grid; gap: 10px; }
label { display: grid; gap: 6px; }
label span { font-size: 12px; color: var(--muted); }
input {
  background: rgba(0,0,0,0.22);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 10px 12px;
  outline: none;
}
input:focus { border-color: rgba(106, 163, 255, 0.6); box-shadow: 0 0 0 3px rgba(106, 163, 255, 0.12); }
select {
  background: rgba(0,0,0,0.22);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 10px 12px;
  outline: none;
}
select:focus { border-color: rgba(106, 163, 255, 0.6); box-shadow: 0 0 0 3px rgba(106, 163, 255, 0.12); }

button {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(106,163,255,0.25), rgba(106,163,255,0.10));
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
}
button.secondary { background: rgba(255,255,255,0.06); }
button:disabled { opacity: 0.6; cursor: not-allowed; }

.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.divider { height: 1px; background: var(--border); margin: 12px 0; }
.error { color: var(--danger); margin: 0; font-size: 13px; }

h3 { margin: 0 0 10px; font-size: 15px; }