.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
}
.lightbox-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.lightbox-content {
  position: relative;
}
.lightbox-overlay img {
  max-width: 92vw;
  max-height: 92vh;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.lightbox-close {
  position: absolute;
  top: -14px;
  right: -14px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0,0,0,0.65);
  color: #fff;
  border: none;
  font-size: 22px;
  line-height: 36px;
  text-align: center;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}
.lightbox-close:hover {
  background: rgba(0,0,0,0.85);
  transform: scale(1.05);
}