/* Image Optimization Styles */

/* Lazy loading placeholder - REMOVED opacity effects */
img[loading="lazy"] {
    /* opacity: 0; - REMOVED */
    /* transition: opacity 0.3s ease-in-out; - REMOVED */
}

img[loading="lazy"].loaded {
    /* opacity: 1; - REMOVED */
}

/* Progressive loading effect */
img.progressive {
    filter: blur(10px);
    transition: filter 0.3s ease-in-out;
}

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

/* Image loading skeleton */
.image-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;
    }
}

/* Optimized image container */
.optimized-image {
    position: relative;
    overflow: hidden;
}

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

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

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

/* Responsive image optimization */
.responsive-img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Critical image preloading */
.critical-image {
    font-display: swap;
}

/* Image error fallback */
img.error {
    filter: grayscale(100%);
    opacity: 0.5;
}

/* Loading spinner for images */
.image-loading {
    position: relative;
}

.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 #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 1;
}

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

/* Intersection Observer fallback */
.no-intersection-observer img[loading="lazy"] {
    opacity: 1;
}

/* High DPI display optimization */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .high-dpi {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Print optimization */
@media print {
    img {
        break-inside: avoid;
        max-width: 100% !important;
        height: auto !important;
    }
    
    .no-print {
        display: none !important;
    }
}