/* Lazy Loading Styles */
.lazy-image {
    transition: opacity 0.3s ease;
}

.lazy-image.loading {
    opacity: 0.7;
    position: relative;
}

.lazy-image.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #292929;
    border-radius: 50%;
    animation: lazy-spin 1s linear infinite;
    z-index: 2;
}

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

.lazy-image.error {
    opacity: 0.5;
    background-color: #f8f8f8;
    position: relative;
}

.lazy-image.error::after {
    content: '⚠';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    color: #999;
    z-index: 2;
}

/* Background image lazy loading - integrates with existing .post-grid-item .image styles */
.lazy-bg {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: #f5f5f5;
}

.lazy-bg.loading {
    background-image: none !important;
}

/* No thumbnail styling */
.no-thumbnail {
    background-color: #f5f5f5 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    color: #999 !important;
    font-size: 14px;
    text-align: center;
    transition: all 0.3s ease;
}

/* Spinner animation */
@keyframes lazy-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Grid specific lazy loading styles - enhance existing post-grid-item styles */
.post-grid-item .lazy-bg {
    transition: all 0.3s ease;
}

.post-grid-item .lazy-bg:hover {
    transform: scale(1.05);
}

.post-grid-item .lazy-bg.loading:hover {
    transform: none;
}

.post-grid-item .no-thumbnail:hover {
    transform: scale(1.02);
    background-color: #eee !important;
}

/* Skeleton loader effect */
.lazy-image.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: lazy-skeleton 1.5s infinite;
    z-index: 1;
}

@keyframes lazy-skeleton {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Fade in effect for loaded images */
.lazy-image.loaded {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0.7;
    }
    to {
        opacity: 1;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .lazy-image.loading::before {
        border-color: #000;
        border-top-color: #fff;
    }
    
    .lazy-image.error::after {
        color: #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .lazy-image,
    .post-grid-item .lazy-bg,
    .lazy-image.loaded {
        transition: none;
        animation: none;
    }
    
    .lazy-image.loading::before,
    .lazy-image.loading::after {
        animation: none;
    }
    
    .post-grid-item .lazy-bg:hover,
    .post-grid-item .no-thumbnail:hover {
        transform: none;
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .lazy-image.loading::before {
        width: 16px;
        height: 16px;
        margin: -8px 0 0 -8px;
        border-width: 1px;
    }
    
    .no-thumbnail {
        font-size: 12px;
    }
}

/* Project page specific lazy loading styles */
.project-image.lazy-image {
    width: 100%;
    height: auto;
    margin-bottom: 20px;
    display: block;
}

.project-image.lazy-image:not(.loaded) {
    background-color: #f5f5f5;
    min-height: 300px;
    position: relative;
}

.project-image.loading {
    min-height: 300px;
}

.project-image.loaded {
    opacity: 1 !important;
    min-height: auto;
}

.project-image.error {
    min-height: 200px;
    background-color: #f8f8f8;
    border: 1px dashed #ddd;
}

/* Project slideshow lazy loading */
.project-slideshow .slide img.lazy-image {
    width: 100%;
    height: auto;
}

.project-slideshow .slide img.lazy-image:not(.loaded) {
    min-height: 400px;
    background-color: #f5f5f5;
}

@media (max-width: 768px) {
    .project-image.lazy-image:not(.loaded),
    .project-image.loading {
        min-height: 200px;
    }
    
    .project-slideshow .slide img.lazy-image:not(.loaded) {
        min-height: 250px;
    }
}