:root {
  --bg: #0b1220;
  --card: #111a2e;
  --text: #e7eefc;
  --muted: #a9b7d6;
  --accent: #5aa2ff;
  --danger: #ff6b6b;
  --border: rgba(255,255,255,0.10);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px circle at 20% 10%, #14224a 0%, var(--bg) 60%);
  color: var(--text);
}
.container {
  max-width: 520px;
  margin: 48px auto;
  padding: 0 16px;
}
h1 {
  margin: 0 0 16px;
  font-size: 28px;
}
.card {
  background: rgba(17, 26, 46, 0.75);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  backdrop-filter: blur(6px);
}
label {
  display: block;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 14px;
}
input {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  outline: none;
}
input:focus {
  border-color: rgba(90,162,255,0.65);
}
button {
  width: 100%;
  margin-top: 8px;
  padding: 11px 14px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #081024;
  font-weight: 700;
  cursor: pointer;
}
button.secondary {
  background: rgba(255,255,255,0.10);
  color: var(--text);
  border: 1px solid var(--border);
}
.alert {
  border: 1px solid rgba(255,107,107,0.35);
  background: rgba(255,107,107,0.12);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 12px;
}
.hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}
code {
  background: rgba(255,255,255,0.08);
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid var(--border);
}