.image-popup-overlay {
  display: none; /* hidden by default */
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 10000;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.3s ease; /* smooth fade */
}

.image-popup-overlay.active {
  display: flex; /* show overlay */
  opacity: 1;
}

.image-popup-content {
  position: relative;
}

.image-popup-content img {
  width: auto;
  height: 90vh;
  cursor: pointer;
  border-radius: 6px;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

.popup-close-btn {
  position: absolute;
  top: -10px;
  right: -10px;
  background: #fff;
  border: none;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  font-size: 20px;
  line-height: 30px;
  text-align: center;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  z-index: 9999; /* Make sure button is above image */
}

@media (max-width: 768px) {
  .image-popup-content img {
    width: 80vw;
    height: auto;
    max-height: auto;
  }
  .popup-close-btn {
    width: 25px;
    height: 25px;
    font-size: 18px;
    line-height: 25px;
  }
}