.theme-item {
  width: 140px;
  height: 80px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Poppins", sans-serif;
  font-weight: 600;
  color: white;
  cursor: pointer;
  margin: 12px;
  transition: all 0.3s ease;
  box-shadow: 0 0 10px rgba(0,0,0,0.2);
}

.theme-item.unlocked:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(255,255,255,0.4);
}

.theme-item.locked {
  filter: grayscale(0.9) brightness(0.6);
  cursor: not-allowed;
}