.gallery {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  margin-top: 20px;
}

.gallery-item {
  position: relative;
  border: 3px solid var(--accent-color, #00ffcc);
  padding: 6px;
  border-radius: 10px;
  transition: 0.3s ease;
}

.gallery-item img {
  width: 100%;
  display: block;
  border-radius: 8px;
}

.fav-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.55);
  border: none;
  color: white;
  font-size: 20px;
  padding: 6px 10px;
  cursor: pointer;
  border-radius: 6px;
  transition: 0.3s;
}

.fav-btn:hover {
  transform: scale(1.2);
}

.gallery-item.favorited {
  border-color: gold;
  box-shadow: 0 0 20px gold;
}

.gallery-item.favorited .fav-btn {
  background: gold;
  color: black;
}