/**
 * Lazy Loader Styles
 * Provides visual feedback during lazy loading
 */

/* Base lazy loading styles */
img.lazyload,
iframe.lazyload-iframe {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    background-color: #f5f5f5;
    min-height: 50px;
}

img.lazyload.loaded,
iframe.lazyload-iframe.loaded {
    opacity: 1;
}

/* Loading state */
img.lazyload.loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

iframe.lazyload-iframe.loading {
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
}

iframe.lazyload-iframe.loading::before {
    content: 'Loading...';
    color: #999;
    font-size: 14px;
}

/* Error state */
img.lazyload.error {
    background-color: #ffebee;
    opacity: 0.7;
}

img.lazyload.error::after {
    content: '×';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #f44336;
    font-size: 24px;
    font-weight: bold;
}

/* Lazy component container */
.lazy-component {
    position: relative;
    background-color: #f5f5f5;
    overflow: hidden;
}

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

.lazy-component.loaded {
    background-color: transparent;
}

/* Skeleton loading animation */
@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Fade in animation for loaded content */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

img.lazyload.loaded {
    animation: fadeIn 0.3s ease-out;
}

/* Noscript fallback - hide by default, shown when JS is disabled */
noscript {
    display: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    img.lazyload,
    iframe.lazyload-iframe {
        min-height: 30px;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    img.lazyload.loading,
    iframe.lazyload-iframe.loading {
        background-color: #ffffff;
        border: 2px solid #000000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    img.lazyload,
    iframe.lazyload-iframe,
    .lazy-component {
        transition: none;
        animation: none;
    }
}

/* Print styles - ensure images load when printing */
@media print {
    img.lazyload,
    iframe.lazyload-iframe {
        opacity: 1 !important;
        transition: none !important;
    }
    
    noscript {
        display: block;
    }
}