body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
}

main {
  flex: 1 0 auto;
}

/* Card layout and hover effect */
.category-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}

.category-card:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.category-thumbnail {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
  filter: brightness(0.8);
  transition: filter 0.3s ease;
}

.category-card:hover .category-thumbnail {
  filter: brightness(0.5);
}

.card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  color: white;
  padding: 1rem;
  transition: opacity 0.3s ease;
}