.gallery-slider {
  position: relative;
  width: 100%;
  max-width: 1000px;
  margin: 20px auto;
  overflow: hidden;
}
.slider-track {
  display: flex;
  transition: transform 0.3s ease;
  gap: 10px;
}
.slider-track img {
  flex: 0 0 auto;
  width: 18%;
  height: auto;
  max-height: 150px;
  object-fit: cover;
  border-radius: 8px;
  cursor: pointer;
  background: #eee;
}

/* Arrows */
button.prev, button.next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: none;
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 18px;
}
button.prev { left: 0; }
button.next { right: 0; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.85);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}
.lightbox.active { display: flex; }
.lightbox img { max-width: 92%; max-height: 92%; border-radius: 8px; }
.lightbox-close { position: absolute; top: 20px; right: 30px; color: #fff; font-size: 36px; cursor: pointer; }

/* Responsive */
@media (max-width: 1024px) { .slider-track img { width: 22%; } }
@media (max-width: 768px) { .slider-track img { width: 30%; } }
@media (max-width: 480px) { .slider-track img { width: 45%; } button.prev, button.next { font-size: 16px; } }