.img-lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  z-index: 99998;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.img-lightbox-overlay.active {
  opacity: 1;
  visibility: visible;
}

.img-lightbox-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.img-lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.img-lightbox-content img {
  max-width: 90vw;
  max-height: 85vh;
  display: block;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.8);
  opacity: 0;
  transition: opacity 0.25s ease;
  position: relative;
  z-index: 1;
}

.img-lightbox-content img.loaded {
  opacity: 1;
}

.img-lightbox-loader {
  position: absolute;
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: img-lightbox-spin 0.8s linear infinite;
  display: none;
}

.img-lightbox-content.loading .img-lightbox-loader {
  display: block;
}

@keyframes img-lightbox-spin {
  to { transform: rotate(360deg); }
}

.img-lightbox-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: none;
  color: #fff;
  font-size: 34px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  opacity: 0.7;
  transition: opacity 0.2s;
  font-family: Arial, sans-serif;
  z-index: 2;
}

.img-lightbox-close:hover {
  opacity: 1;
}

.img-lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.5);
  border: none;
  color: #fff;
  font-size: 30px;
  cursor: pointer;
  padding: 14px 16px;
  opacity: 0.6;
  transition: opacity 0.2s;
  z-index: 99999;
  line-height: 1;
}

.img-lightbox-nav:hover {
  opacity: 1;
}

.img-lightbox-nav.prev {
  left: 16px;
}

.img-lightbox-nav.next {
  right: 16px;
}

@media (max-width: 768px) {
  .img-lightbox-nav {
    font-size: 22px;
    padding: 10px 12px;
  }

  .img-lightbox-nav.prev {
    left: 8px;
  }

  .img-lightbox-nav.next {
    right: 8px;
  }

  .img-lightbox-close {
    top: 8px;
    right: 8px;
    font-size: 28px;
  }

  .img-lightbox-content img {
    max-width: 95vw;
    max-height: 80vh;
  }
}