/* Popup overlay & content */
.crystal-popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.crystal-popup-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.crystal-popup-box {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.crystal-popup-box img {
  display: block;
  max-width: 100%;
  max-height: 90vh;
  width: auto;
  height: auto;
  object-fit: contain;
}

.crystal-popup-close {
  position: absolute;
  top: -12px;
  right: -12px;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: #fff;
  color: #333;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: background 0.2s, transform 0.2s;
}

.crystal-popup-close:hover {
  background: #f0f0f0;
  transform: scale(1.05);
}

.crystal-popup-overlay .crystal-popup-close::before {
  content: "×";
}