.image-lightbox-thumb {
  cursor: pointer;
}

.image-lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.image-lightbox-overlay img {
  max-width: 90vw;
  max-height: 90vh;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
}
.image-lightbox-thumb img {
  max-height: 120px; /* hauteur max */
  width: auto;       /* la largeur s'ajuste */
}