* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
  background: linear-gradient(135deg, #1e2530, #0f1420);
  color: #e7ecf5;
}

.card {
  background: #171f30;
  border: 1px solid #2a3448;
  border-radius: 16px;
  padding: 40px;
  text-align: center;
  max-width: 420px;
  width: 90%;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

h1 {
  margin: 0 0 8px;
  font-size: 24px;
}

.subtitle {
  margin: 0 0 24px;
  color: #8b96ab;
  font-size: 14px;
}

.badge {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  background: #2a3448;
  margin-bottom: 24px;
}

.badge.staging {
  background: #4f8cff33;
  color: #4f8cff;
  border: 1px solid #4f8cff;
}

.badge.prod {
  background: #2ecc7133;
  color: #2ecc71;
  border: 1px solid #2ecc71;
}

.links {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.links a {
  color: #4f8cff;
  text-decoration: none;
  font-size: 14px;
  padding: 8px 14px;
  border: 1px solid #2a3448;
  border-radius: 8px;
  transition: background 0.2s;
}

.links a:hover {
  background: #2a3448;
}