.zf-gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.zf-card {
  width: 250px;
  height: 320px;
  perspective: 1000px;
}
.zf-inner {
  width: 100%;
  height: 100%;
  transition: transform .6s;
  transform-style: preserve-3d;
}
.zf-card:hover .zf-inner {
  transform: rotateY(180deg);
}
.zf-front, .zf-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0,0,0,.2);
}
.zf-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.zf-back {
  background: white;
  transform: rotateY(180deg);
  padding: 15px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.zf-btn {
  background: black;
  color: white;
  padding: 8px 12px;
  border-radius: 8px;
  text-align: center;
  text-decoration: none;
}