/**
 * Modern Image Styles
 * Enterprise-grade CSS for responsive images with progressive loading
 */

/* Base image styles */
.modern-image {
    display: block;
    max-width: 100%;
    height: auto;
    transition: opacity 0.3s ease-in-out, filter 0.3s ease-in-out;
}

/* Lazy loading states */
.modern-image[data-src]:not([data-loaded]) {
    opacity: 0;
    filter: blur(5px);
    background-color: #f3f4f6;
    background-image: linear-gradient(45deg, #f9fafb 25%, transparent 25%), 
                      linear-gradient(-45deg, #f9fafb 25%, transparent 25%), 
                      linear-gradient(45deg, transparent 75%, #f9fafb 75%), 
                      linear-gradient(-45deg, transparent 75%, #f9fafb 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    animation: loading-shimmer 2s infinite linear;
}

.modern-image.loaded {
    opacity: 1;
    filter: none;
    background: none;
    animation: none;
}

.modern-image.error {
    opacity: 0.7;
    filter: grayscale(100%);
}

/* Loading animation */
@keyframes loading-shimmer {
    0% {
        background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    }
    100% {
        background-position: 20px 20px, 20px 30px, 30px 10px, 10px 20px;
    }
}

/* Progressive loading container */
.progressive-image-container {
    position: relative;
    overflow: hidden;
    background-color: #f3f4f6;
}

.progressive-image-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(10px);
    transform: scale(1.1);
    transition: opacity 0.5s ease-in-out;
}

.progressive-image-full {
    position: relative;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.progressive-image-full.loaded {
    opacity: 1;
}

/* Responsive image containers */
.responsive-image-container {
    position: relative;
    overflow: hidden;
}

.responsive-image-container::before {
    content: '';
    display: block;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
}

.responsive-image-container.aspect-1-1::before {
    padding-bottom: 100%; /* 1:1 aspect ratio */
}

.responsive-image-container.aspect-4-3::before {
    padding-bottom: 75%; /* 4:3 aspect ratio */
}

.responsive-image-container.aspect-3-2::before {
    padding-bottom: 66.67%; /* 3:2 aspect ratio */
}

.responsive-image-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Picture element styles */
picture {
    display: block;
    line-height: 0;
}

picture img {
    width: 100%;
    height: auto;
    display: block;
}

/* Hover effects for interactive images */
.interactive-image {
    cursor: pointer;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.interactive-image:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* Gallery grid styles */
.image-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.image-grid-item {
    position: relative;
    overflow: hidden;
    border-radius: 0.5rem;
    background-color: #f3f4f6;
}

/* Lightbox styles */
.image-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
}

.image-lightbox.active {
    opacity: 1;
    visibility: visible;
}

.image-lightbox img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 0.5rem;
}

.image-lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 2rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease-in-out;
}

.image-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Performance optimization classes */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

/* Print styles */
@media print {
    .modern-image[data-src]:not([data-loaded]) {
        opacity: 1;
        filter: none;
        background: none;
    }
    
    .progressive-image-placeholder {
        display: none;
    }
    
    .progressive-image-full {
        opacity: 1;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .modern-image.error {
        filter: contrast(150%) grayscale(100%);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .modern-image,
    .progressive-image-placeholder,
    .progressive-image-full,
    .interactive-image,
    .image-lightbox {
        transition: none;
        animation: none;
    }
    
    .interactive-image:hover {
        transform: none;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .modern-image[data-src]:not([data-loaded]) {
        background-color: #374151;
        background-image: linear-gradient(45deg, #4b5563 25%, transparent 25%), 
                          linear-gradient(-45deg, #4b5563 25%, transparent 25%), 
                          linear-gradient(45deg, transparent 75%, #4b5563 75%), 
                          linear-gradient(-45deg, transparent 75%, #4b5563 75%);
    }
    
    .progressive-image-container,
    .image-grid-item {
        background-color: #374151;
    }
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .image-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .image-lightbox img {
        max-width: 95%;
        max-height: 95%;
    }
    
    .image-lightbox-close {
        top: 1rem;
        right: 1rem;
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.5rem;
    }
}

/* Tablet optimizations */
@media (min-width: 769px) and (max-width: 1024px) {
    .image-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

/* Large screen optimizations */
@media (min-width: 1200px) {
    .image-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
}

/* Utility classes */
.image-cover { object-fit: cover; }
.image-contain { object-fit: contain; }
.image-fill { object-fit: fill; }
.image-scale-down { object-fit: scale-down; }
.image-none { object-fit: none; }

.image-center { object-position: center; }
.image-top { object-position: top; }
.image-bottom { object-position: bottom; }
.image-left { object-position: left; }
.image-right { object-position: right; }

/* Accessibility improvements */
.modern-image:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* Aspect ratio containers for perfect image fitting */
.aspect-video {
    aspect-ratio: 16 / 9;
}

.aspect-square {
    aspect-ratio: 1 / 1;
}

.aspect-[4/3] {
    aspect-ratio: 4 / 3;
}

.aspect-[3/2] {
    aspect-ratio: 3 / 2;
}

/* Featured image specific styles */
.featured-image-container {
    position: relative;
    overflow: hidden;
    border-radius: 0.75rem; /* rounded-xl */
    background-color: #f3f4f6; /* bg-gray-100 */
}

.featured-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.3s ease-in-out;
}

/* Responsive featured image containers */
@media (max-width: 640px) {
    .featured-image-container {
        aspect-ratio: 16 / 9;
    }
}

@media (min-width: 641px) {
    .featured-image-container {
        aspect-ratio: 16 / 9;
    }
}

/* Loading states for different image types */
.hero-image[data-src]:not([data-loaded]) {
    min-height: 400px;
}

.thumbnail-image[data-src]:not([data-loaded]) {
    min-height: 150px;
}

.avatar-image[data-src]:not([data-loaded]) {
    min-height: 64px;
    min-width: 64px;
    border-radius: 50%;
}

/* Error state improvements */
.modern-image.error::after {
    content: '⚠️ Image failed to load';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    font-size: 0.875rem;
    white-space: nowrap;
}