/**
 * Lazy Loading CSS Styles
 * Loading animations and visual feedback for lazy loaded images
 */

/* Lazy loading states */
.lazy-loading {
    opacity: 0.7;
    transition: opacity 0.3s ease-in-out;
}

.lazy-loaded {
    opacity: 1;
}

.lazy-error {
    opacity: 0.5;
    filter: grayscale(100%);
}

/* Loading spinner */
.loader {
    width: 48px;
    height: 48px;
    border: 5px solid #FFF;
    border-bottom-color: #FF3D00;
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
}

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

/* Ensure image containers can properly position spinners */
img.lazy-loading,
img.lazy-loaded,
img.lazy-error {
    position: relative;
}

/* Make sure parent containers can position spinners */
figure,
.overlay-block,
.card-img-top,
.item-inner {
    position: relative;
}

/* Fade in animation for loaded images */
.lazy-loaded {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Progressive loading effect */
.lazy-loading img {
    filter: blur(2px);
    transition: filter 0.3s ease-in-out;
}

.lazy-loaded img {
    filter: blur(0);
}

/* Loading skeleton for images */
.lazy-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
}

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

/* Responsive image containers */
.lazy-image-container {
    position: relative;
    overflow: hidden;
    background: #f8f9fa;
    border-radius: 8px;
}

.lazy-image-container img {
    width: 100%;
    height: auto;
    display: block;
}

/* Error state styling */
.lazy-error::after {
    content: "⚠️ Image failed to load";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.9);
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    color: #dc3545;
    white-space: nowrap;
    z-index: 5;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .loader {
        border-color: #000;
        border-bottom-color: #FF3D00;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .lazy-loading,
    .lazy-loaded,
    .lazy-loading img,
    .lazy-loaded img {
        transition: none;
        animation: none;
    }
    
    .loader {
        animation: none;
        border-bottom-color: #ccc;
    }
    
    .lazy-skeleton {
        animation: none;
        background: #f0f0f0;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .loader {
        border-color: #fff;
        border-bottom-color: #FF3D00;
    }
    
    .lazy-skeleton {
        background: linear-gradient(90deg, #2d3748 25%, #4a5568 50%, #2d3748 75%);
    }
    
    .lazy-image-container {
        background: #2d3748;
    }
}

/* Print styles */
@media print {
    .loader,
    .lazy-skeleton {
        display: none !important;
    }
    
    .lazy-loading,
    .lazy-loaded,
    .lazy-error {
        opacity: 1 !important;
        filter: none !important;
    }
}