@keyframes shimmer {
  0% {
    transform: translateX(-100%);
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translateX(100%);
    opacity: 0.6;
  }
}

@keyframes pulse-gentle {
  0%,
  100% {
    opacity: 0.8;
  }
  50% {
    opacity: 0.4;
  }
}

.animate-shimmer {
  animation: shimmer 2.5s infinite ease-in-out;
}

.animate-pulse-gentle {
  animation: pulse-gentle 2s infinite ease-in-out;
}

.skeleton {
  background: linear-gradient(
    90deg,
    #f0f0f0 0%,
    #e0e0e0 20%,
    #f0f0f0 40%,
    #e0e0e0 100%
  );
  background-size: 200% 100%;
  animation: loading 2s infinite ease-in-out;
}

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

/* Image transitions */
.real-image {
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.real-image.loaded {
  opacity: 1 !important;
}

.real-image.fade-in {
  transform: scale(1.02);
  transition: transform 0.3s ease-out;
}

.real-image.fade-in:hover {
  transform: scale(1.05);
}

/* Error state styling */
.real-image.load-error {
  opacity: 0.3;
  filter: grayscale(100%);
}

/* Responsive grid fixes */
.masonry-grid-container {
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
}

/* Ensure proper spacing on all devices */
.masonry-item {
  box-sizing: border-box;
}

/* Mobile optimizations */
@media (max-width: 640px) {
  .masonry-sizer, 
  .masonry-item { 
    width: 49% !important; 
    padding: 0.5px;
  }
  
  #masonry-grid {
    padding-left: 2px;
    padding-right: 2px;
  }

  #masonry-grid.masonry-enabled {
    display: block;
  }

  #masonry-grid.masonry-enabled .masonry-sizer {
    display: block;
    width: calc(50% - 3px) !important;
  }

  #masonry-grid.masonry-enabled .masonry-item {
    width: calc(50% - 3px) !important;
    padding: 0.5px;
  }
}

/* Tablet optimizations */
@media (min-width: 641px) and (max-width: 768px) {
  #masonry-grid.masonry-enabled {
    display: block;
  }

  #masonry-grid.masonry-enabled .masonry-sizer {
    display: block;
    width: calc(33.33333% - 3px) !important;
  }

  #masonry-grid.masonry-enabled .masonry-item {
    width: calc(33.33333% - 3px) !important;
    padding: 0.5px;
  }
}

/* Medium screen optimizations */
@media (min-width: 769px) and (max-width: 1024px) {
  .masonry-sizer, 
  .masonry-item { 
    width: 24% !important; 
    padding: 0.5px;
  }

  #masonry-grid.masonry-enabled {
    display: block;
  }

  #masonry-grid.masonry-enabled .masonry-sizer {
    display: block;
    width: calc(25% - 3px) !important;
  }

  #masonry-grid.masonry-enabled .masonry-item {
    width: calc(25% - 3px) !important;
    padding: 0.5px;
  }
}

/* Large screen optimizations */
@media (min-width: 1025px) {
  .masonry-sizer, 
  .masonry-item { 
    width: 15.666667% !important;
    padding: 0.5px;
  }

  #masonry-grid.masonry-enabled {
    display: block;
  }

  #masonry-grid.masonry-enabled .masonry-sizer {
    display: block;
    width: calc(16.666667% - 3px) !important;
  }

  #masonry-grid.masonry-enabled .masonry-item {
    width: calc(16.666667% - 3px) !important;
    padding: 0.5px;
  }
}

/* Hover effects */
.masonry-item:hover .real-image {
  transform: scale(1.05);
  filter: brightness(0.95) contrast(1.05);
}

/* Loading indicator for the entire grid */
.grid-loading {
  position: relative;
}

.grid-loading::before {
  content: '';
  position: absolute;
  padding-bottom: 2px;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    transparent,
    #ffc800,
    transparent
  );
  background-size: 200% 100%;
  animation: loading-bar 2s infinite ease-in-out;
  z-index: 100;
}

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

/* Accessibility improvements */
.masonry-item a:focus {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  .real-image,
  .skeleton,
  .animate-shimmer,
  .animate-pulse-gentle {
    animation: none !important;
    transition: none !important;
  }
}

/* Print styles */
@media print {
  .masonry-item {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}