/* Lazy Loading Styles */
.lazy-image {
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}

.lazy-image.loaded {
  opacity: 1;
}

.lazy-image.loading {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f8fafc, #e2e8f0);
  color: #94a3b8;
  font-size: 2rem;
  width: 100%;
  height: 100%;
  position: relative;
}

.image-placeholder::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent 25%, rgba(255,255,255,0.5) 50%, transparent 75%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Fade in animation for loaded content */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Progressive enhancement for images */
.progressive-image {
  position: relative;
  overflow: hidden;
}

.progressive-image .image-low-res {
  filter: blur(2px);
  transition: filter 0.3s ease;
}

.progressive-image .image-high-res {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.progressive-image .image-high-res.loaded {
  opacity: 1;
}

.progressive-image .image-high-res.loaded + .image-low-res {
  filter: blur(0);
}