/* Leichtes, responsives Modal */
#img-popup-overlay {
  position: fixed; inset: 0; display: none;
  align-items: center; justify-content: center;
  background: rgba(0,0,0,.6); z-index: 999999;
}
#img-popup-overlay.active { display: flex; }
#img-popup-inner { position: relative; max-width: 90vw; max-height: 90vh; }
#img-popup-inner a { display: block; }
#img-popup-inner img { max-width: 100%; max-height: 90vh; height: auto; width: auto; display: block; }
#img-popup-close {
  position: absolute; top: -12px; right: -12px; width: 36px; height: 36px;
  border-radius: 50%; border: none; cursor: pointer;
  background: white; box-shadow: 0 2px 10px rgba(0,0,0,.3);
}
#img-popup-close:before { content: "✕"; font-size: 18px; line-height: 36px; display: block; text-align: center; }