.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.93);
  z-index: 300;
  align-items: center;
  justify-content: center;
  padding: var(--gap-md);
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  cursor: zoom-out;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 28px;
  color: var(--white);
  font-size: 36px;
  line-height: 1;
  padding: 4px 8px;
  transition: color var(--transition-fast);
}

.lightbox-close:hover {
  color: var(--red);
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--white);
  font-size: 48px;
  padding: 8px 20px;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
  line-height: 1;
}

.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

.lightbox-prev:hover,
.lightbox-next:hover {
  opacity: 1;
}

@media (max-width: 600px) {
  .lightbox-prev,
  .lightbox-next {
    font-size: 32px;
    padding: 4px 10px;
  }
}