.download-modal {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-color: rgba(0,0,0,0.7);
  z-index: 1000;
  overflow-y: auto;
}
.fade-in { animation: fadeIn 0.25s; }
@keyframes fadeIn { from { opacity:0 } to { opacity:1 } }
.card-hover:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}