/* Progressive Image Loading Styles */
.progressive-image-wrapper {
  position: relative;
  display: block;
  overflow: hidden;
  background: #f5f5f5;
  border-radius: 8px;
  min-height: 200px;
}

/* Static placeholder for shortcode images */
.static-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #f0f0f0, #e0e0e0, #f0f0f0);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
  z-index: 1;
  opacity: 1;
  transition: opacity 0.4s ease;
}

/* Placeholder blur effect */
.placeholder-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(20px) saturate(1.2);
  transform: scale(1.1);
  transition: opacity 0.4s ease, transform 0.4s ease;
  z-index: 1;
}

/* Main image */
.main-image {
  position: relative;
  width: 100%;
  height: auto;
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 2;
  display: block;
  transform: translateZ(0); /* Force hardware acceleration */
}

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

/* Loading skeleton shimmer effect */
.progressive-image-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  animation: shimmer 2s infinite ease-in-out;
  z-index: 3;
  pointer-events: none;
}

.main-image.loaded ~ .progressive-image-wrapper::before,
.progressive-image-wrapper:has(.main-image.loaded)::before {
  opacity: 0;
  animation: none;
}

@keyframes shimmer {
  0% {
    left: -100%;
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    left: 100%;
    opacity: 0;
  }
}

/* Loading indicator */
.progressive-image-wrapper::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  margin: -20px 0 0 -20px;
  border: 3px solid rgba(0, 0, 0, 0.1);
  border-top: 3px solid var(--accent-color, #007acc);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  z-index: 4;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.main-image.loaded ~ .progressive-image-wrapper::after,
.progressive-image-wrapper:has(.main-image.loaded)::after {
  opacity: 0;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Error state */
.main-image.error {
  opacity: 1;
  filter: grayscale(1);
}

.progressive-image-wrapper.error::after {
  content: '⚠️';
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  width: auto;
  height: auto;
  border: none;
  animation: none;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 4px;
  padding: 8px;
}

/* Dark mode adjustments */
.dark-mode .progressive-image-wrapper {
  background: #2a2a2a;
}

.dark-mode .static-placeholder {
  background: linear-gradient(90deg, #333, #222, #333);
  background-size: 200% 100%;
}

.dark-mode .progressive-image-wrapper::before {
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
}

.dark-mode .progressive-image-wrapper::after {
  border-color: rgba(255, 255, 255, 0.2);
  border-top-color: var(--accent-color, #4fa8e0);
}

.dark-mode .progressive-image-wrapper.error::after {
  background: rgba(42, 42, 42, 0.9);
  color: #fff;
}

/* Responsive adjustments */
@media (max-width: 600px) {
  .progressive-image-wrapper {
    border-radius: 4px;
    min-height: 150px;
  }

  .progressive-image-wrapper::after {
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border-width: 2px;
  }
}

/* Intersection Observer fade-in animation */
.image-figure[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.image-figure[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  .progressive-image-wrapper::before,
  .progressive-image-wrapper::after,
  .placeholder-image,
  .main-image,
  .image-figure[data-aos] {
    animation: none;
    transition: none;
  }

  .main-image {
    opacity: 1;
  }

  .placeholder-image {
    display: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .progressive-image-wrapper {
    border: 2px solid currentColor;
  }

  .progressive-image-wrapper::after {
    border-color: currentColor;
    border-top-color: transparent;
  }
}

/* Focus states for accessibility */
.progressive-image-wrapper:focus-within {
  outline: 2px solid var(--accent-color, #007acc);
  outline-offset: 2px;
}

/* Hover effects for interactive images */
.content-container .progressive-image-wrapper {
  cursor: zoom-in;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.content-container .progressive-image-wrapper:hover {
  transform: scale(1.01);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.dark-mode .content-container .progressive-image-wrapper:hover {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Lazy loading enhancement */
.main-image[loading="lazy"] {
  content-visibility: auto;
  contain-intrinsic-size: 200px;
}

/* WebP support detection fallback */
.no-webp .main-image[data-webp] {
  content: attr(data-fallback);
}

/* Print styles */
@media print {
  .progressive-image-wrapper::before,
  .progressive-image-wrapper::after {
    display: none;
  }

  .placeholder-image {
    display: none;
  }

  .main-image {
    opacity: 1;
  }
}