:root {
  --bg: #0f1419;
  --card: #1a222c;
  --text: #e8eef4;
  --muted: #8b9aab;
  --accent: #3d8bfd;
  --err: #ff6b6b;
  --font: "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1e3a5f 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #243028 0%, transparent 50%),
    var(--bg);
}
.wrap { max-width: 420px; margin: 0 auto; padding: 48px 20px; }
h1 { margin: 0 0 8px; font-size: 2rem; letter-spacing: 0.02em; }
.muted { color: var(--muted); margin-top: 0; }
.card {
  margin-top: 28px;
  padding: 20px;
  background: color-mix(in srgb, var(--card) 92%, transparent);
  border: 1px solid #2a3542;
  border-radius: 12px;
  display: grid;
  gap: 12px;
}
label { display: grid; gap: 6px; font-size: 0.9rem; }
input {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #334155;
  background: #0b1118;
  color: var(--text);
}
button {
  padding: 10px 14px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
.err { color: var(--err); margin: 0; }