body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #1f1f1f, #2c2c54);
  color: #fff;
  transition: background 0.3s ease;
}

.navbar {
  display: flex;
  justify-content: space-between;
  padding: 1rem;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
}

.card {
  background: rgba(255,255,255,0.1);
  padding: 1.5rem;
  border-radius: 12px;
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

.premium {
  border: 2px solid gold;
}

.badge {
  background: gold;
  color: #000;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
}