#pb-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
  display: none;
  display: flex; /* <-- AGGIUNTO */
  justify-content: center;
  align-items: center;
  z-index: 10000;
}
#pb-popup {
  background:#fff;
  width:600px;
  height:600px;
  position:relative;
  opacity:0;
  transform: scale(0.8);
  transition: all 0.3s ease-in-out;
}
#pb-popup.open {
  opacity:1;
  transform: scale(1);
}
#pb-close {
  position:absolute;
  top:5px;
  right:10px;
  background:none;
  border:none;
  font-size:24px;
  cursor:pointer;
}
#pb-popup img {
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

#pb-timer {
  position: absolute;
  bottom: 10px;
  left: 10px;
  background: rgba(0,0,0,0.7);
  color: white;
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 14px;
  font-family: sans-serif;
}