:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e7ecf3;
  --muted: #8b98a9;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --danger: #ef4444;
  --ok: #22c55e;
  --border: #2d3a4d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 20% -10%, #1e3a5f 0%, transparent 60%), var(--bg);
  color: var(--text);
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

h1 {
  margin: 0 0 8px;
  font-size: 1.5rem;
}

.sub {
  color: var(--muted);
  margin: 0 0 24px;
  font-size: 0.95rem;
  line-height: 1.5;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 8px;
}

input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0d121a;
  color: var(--text);
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

button {
  width: 100%;
  border: none;
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: white;
  transition: background 0.15s;
}

button:hover { background: var(--accent-hover); }
button:disabled { opacity: 0.6; cursor: not-allowed; }

.msg {
  margin-top: 16px;
  padding: 12px;
  border-radius: 10px;
  font-size: 0.9rem;
  display: none;
}

.msg.error { display: block; background: rgba(239, 68, 68, 0.15); color: #fecaca; }
.msg.ok { display: block; background: rgba(34, 197, 94, 0.15); color: #bbf7d0; }

.footer {
  margin-top: 20px;
  text-align: center;
  font-size: 0.85rem;
}

.footer a { color: var(--accent); text-decoration: none; }

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.15);
  color: #93c5fd;
  font-size: 0.75rem;
  margin-bottom: 12px;
}