#lb-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.88);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
#lb-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  display: block;
  user-select: none;
}
#lb-prev, #lb-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.15);
  border: none;
  color: white;
  font-size: 3rem;
  line-height: 1;
  padding: 0.15em 0.5em;
  cursor: pointer;
  user-select: none;
  z-index: 10000;
  border-radius: 4px;
  transition: background 0.15s;
}
#lb-prev { left: 1rem; }
#lb-next { right: 1rem; }
#lb-prev:hover, #lb-next:hover { background: rgba(255,255,255,0.35); }
#lb-counter {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-family: -apple-system, sans-serif;
  font-size: 0.9rem;
  pointer-events: none;
}
#lb-close {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: rgba(255,255,255,0.15);
  border: none;
  color: white;
  font-size: 1.4rem;
  cursor: pointer;
  border-radius: 50%;
  width: 2.2rem;
  height: 2.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
#lb-close:hover { background: rgba(255,255,255,0.35); }