.portfolio-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.portfolio-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 30px -10px rgba(0, 0, 0, 0.5);
}

.portfolio-card img {
  will-change: transform;
}

.portfolio-card .overlay {
  transition: background-color 0.3s ease;
}