.card, .stat-card, .streak-card, .assignment-item,
.dsa-item, .note-card, .resource-card, .checklist-item {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover, .resource-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.dsa-item:hover { transform: translateX(4px); }