/* Lazy Loading Styles */

/* Image lazy loading states */
img[data-src],
img[data-lazy-src] {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100px;
}

img.lazy-loading {
    opacity: 0.6;
    filter: blur(10px);
    transition: opacity 0.3s ease-out, filter 0.3s ease-out;
}

img.lazy-loaded {
    opacity: 1;
    filter: none;
    animation: lazy-fade-in 0.3s ease-out;
}

img.lazy-error {
    background: #fee;
    border: 1px dashed #f00;
    opacity: 0.5;
}

/* Background image lazy loading */
[data-bg-image],
[data-lazy-bg] {
    background-color: #f0f0f0;
    background-size: cover;
    background-position: center;
    transition: background-image 0.3s ease-out;
}

[data-bg-image].lazy-loaded,
[data-lazy-bg].lazy-loaded {
    animation: lazy-fade-in 0.5s ease-out;
}

/* Content lazy loading */
[data-lazy-content] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

[data-lazy-content].lazy-content-loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Loading skeleton for images */
.lazy-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: lazy-skeleton-wave 1.5s ease-in-out infinite;
    border-radius: 8px;
}

/* Placeholder blur effect */
.lazy-blur-up {
    filter: blur(20px);
    transform: scale(1.1);
    transition: filter 0.5s ease-out, transform 0.5s ease-out;
}

.lazy-blur-up.lazy-loaded {
    filter: none;
    transform: scale(1);
}

/* Low quality image placeholder (LQIP) */
.lqip-wrapper {
    position: relative;
    overflow: hidden;
    background: #f5f5f5;
}

.lqip-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lqip-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    filter: blur(20px);
    transform: scale(1.1);
    z-index: 1;
    transition: opacity 0.5s ease-out;
}

.lqip-wrapper.loaded .lqip-placeholder {
    opacity: 0;
}

.lqip-image {
    position: relative;
    z-index: 2;
    opacity: 0;
    transition: opacity 0.5s ease-out;
}

.lqip-wrapper.loaded .lqip-image {
    opacity: 1;
}

/* Native lazy loading enhancement */
img[loading="lazy"] {
    min-height: 100px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

/* Animations */
@keyframes lazy-fade-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes lazy-skeleton-wave {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Reduce motion support */
@media (prefers-reduced-motion: reduce) {
    img.lazy-loading,
    img.lazy-loaded,
    [data-lazy-content],
    .lazy-blur-up {
        animation: none;
        transition: none;
    }
}

/* Performance optimization for print */
@media print {
    img[data-src],
    img[data-lazy-src] {
        opacity: 1;
        filter: none;
    }
}