/* Lightbox tự viết cho ảnh trong markdown (issue/PR/bình luận/README/wiki) */
.soc-lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.85);
  align-items: center;
  justify-content: center;
  padding: 40px;
  box-sizing: border-box;
  cursor: zoom-out;
}
.soc-lightbox-overlay.is-open {
  display: flex;
}
.soc-lightbox-overlay img {
  max-width: 100%;
  max-height: 100%;
  box-shadow: 0 0 24px rgba(0, 0, 0, 0.6);
  cursor: default;
}
.soc-lightbox-overlay.has-gallery img {
  cursor: pointer;
}
.soc-lightbox-close {
  position: fixed;
  top: 16px;
  right: 24px;
  font-size: 32px;
  line-height: 1;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.8;
}
.soc-lightbox-close:hover {
  opacity: 1;
}
.soc-lightbox-counter {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 13px;
  background: rgba(0, 0, 0, 0.45);
  padding: 4px 12px;
  border-radius: 12px;
}