/**
 * VWE Stock List - Premium Image Carousel
 * Modern, touch-friendly image carousel for vehicle detail pages
 * 
 * @since      1.0.0
 * @package    VWE_Stock_List
 * @subpackage VWE_Stock_List/public/css
 */

/* ==========================================================================
   Image Carousel Base Styles
   ========================================================================== */

.vwe-detail-images {
    display: flex;
    flex-direction: column;
    gap: var(--vwe-space-md);
    position: relative;
}

/* ==========================================================================
   Main Image Container
   ========================================================================== */

.vwe-main-image-container {
    position: relative;
    width: 100%;
    background: var(--vwe-background);
    border-radius: var(--vwe-radius-lg);
    overflow: hidden;
    box-shadow: var(--vwe-shadow-lg);
    border: 1px solid var(--vwe-border);
}

.vwe-main-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
    transition: var(--vwe-transition);
}

.vwe-main-image:hover {
    transform: scale(1.02);
}

/* Image Loading State */
.vwe-main-image-container.loading {
    background: linear-gradient(90deg, var(--vwe-background) 25%, #f3f4f6 50%, var(--vwe-background) 75%);
    background-size: 200% 100%;
    animation: vwe-loading 1.5s infinite;
}

.vwe-main-image-container.loading .vwe-main-image {
    opacity: 0;
}

@keyframes vwe-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Image Navigation Arrows */
.vwe-image-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: var(--vwe-white);
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--vwe-transition-fast);
    opacity: 0;
    visibility: hidden;
    z-index: 3;
}

.vwe-main-image-container:hover .vwe-image-nav {
    opacity: 1;
    visibility: visible;
}

.vwe-image-nav:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: translateY(-50%) scale(1.1);
}

.vwe-image-nav:active {
    transform: translateY(-50%) scale(0.95);
}

.vwe-image-nav-prev {
    left: var(--vwe-space-md);
}

.vwe-image-nav-next {
    right: var(--vwe-space-md);
}

.vwe-image-nav-prev::before {
    content: "‹";
}

.vwe-image-nav-next::before {
    content: "›";
}

/* Image Counter */
.vwe-image-counter {
    position: absolute;
    bottom: var(--vwe-space-md);
    right: var(--vwe-space-md);
    background: rgba(0, 0, 0, 0.7);
    color: var(--vwe-white);
    padding: var(--vwe-space-xs) var(--vwe-space-sm);
    border-radius: var(--vwe-radius-sm);
    font-size: var(--vwe-font-size-sm);
    font-weight: 500;
    z-index: 2;
}

/* Zoom Indicator */
.vwe-zoom-indicator {
    position: absolute;
    top: var(--vwe-space-md);
    right: var(--vwe-space-md);
    background: rgba(0, 0, 0, 0.7);
    color: var(--vwe-white);
    padding: var(--vwe-space-xs);
    border-radius: var(--vwe-radius-sm);
    font-size: var(--vwe-font-size-sm);
    opacity: 0;
    transition: var(--vwe-transition-fast);
    z-index: 2;
    cursor: pointer;
}

.vwe-main-image-container:hover .vwe-zoom-indicator {
    opacity: 1;
}

.vwe-zoom-indicator::before {
    content: "🔍";
}

/* ==========================================================================
   Thumbnail Gallery
   ========================================================================== */

.vwe-image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: var(--vwe-space-sm);
    max-height: 200px;
    overflow-y: auto;
    padding: var(--vwe-space-sm);
    background: var(--vwe-background);
    border-radius: var(--vwe-radius);
    border: 1px solid var(--vwe-border);
}

/* Custom scrollbar for thumbnail gallery */
.vwe-image-gallery::-webkit-scrollbar {
    width: 6px;
}

.vwe-image-gallery::-webkit-scrollbar-track {
    background: var(--vwe-background);
    border-radius: 3px;
}

.vwe-image-gallery::-webkit-scrollbar-thumb {
    background: var(--vwe-light-gray);
    border-radius: 3px;
}

.vwe-image-gallery::-webkit-scrollbar-thumb:hover {
    background: var(--vwe-gray);
}

/* Thumbnail Images */
.vwe-gallery-thumb {
    width: 100%;
    height: 80px;
    object-fit: cover;
    cursor: pointer;
    border-radius: var(--vwe-radius-sm);
    border: 2px solid transparent;
    transition: var(--vwe-transition-fast);
    position: relative;
    overflow: hidden;
}

.vwe-gallery-thumb:hover {
    border-color: var(--vwe-primary-light);
    transform: scale(1.05);
}

.vwe-gallery-thumb.active {
    border-color: var(--vwe-primary);
    box-shadow: 0 0 0 1px var(--vwe-primary);
}

/* Thumbnail Loading State */
.vwe-gallery-thumb.loading {
    background: linear-gradient(90deg, var(--vwe-background) 25%, #f3f4f6 50%, var(--vwe-background) 75%);
    background-size: 200% 100%;
    animation: vwe-loading 1.5s infinite;
}

/* Thumbnail Index Numbers */
.vwe-gallery-thumb::after {
    content: attr(data-index);
    position: absolute;
    top: 2px;
    left: 2px;
    background: rgba(0, 0, 0, 0.7);
    color: var(--vwe-white);
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: var(--vwe-radius-sm);
    opacity: 0;
    transition: var(--vwe-transition-fast);
}

.vwe-gallery-thumb:hover::after {
    opacity: 1;
}

/* ==========================================================================
   Lightbox/Modal for Full-Size Images
   ========================================================================== */

.vwe-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--vwe-transition);
}

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

.vwe-lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.vwe-lightbox-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--vwe-radius);
    box-shadow: var(--vwe-shadow-xl);
}

/* Lightbox Navigation */
.vwe-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    color: var(--vwe-black);
    border: none;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    transition: var(--vwe-transition-fast);
    backdrop-filter: blur(10px);
}

.vwe-lightbox-nav:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-50%) scale(1.1);
}

.vwe-lightbox-nav-prev {
    left: -80px;
}

.vwe-lightbox-nav-next {
    right: -80px;
}

.vwe-lightbox-nav-prev::before {
    content: "‹";
}

.vwe-lightbox-nav-next::before {
    content: "›";
}

/* Lightbox Close Button */
.vwe-lightbox-close {
    position: absolute;
    top: -60px;
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    color: var(--vwe-black);
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: bold;
    transition: var(--vwe-transition-fast);
    backdrop-filter: blur(10px);
}

.vwe-lightbox-close:hover {
    background: rgba(255, 255, 255, 1);
    transform: scale(1.1);
}

.vwe-lightbox-close::before {
    content: "×";
}

/* Lightbox Image Info */
.vwe-lightbox-info {
    position: absolute;
    bottom: -60px;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--vwe-white);
    font-size: var(--vwe-font-size-sm);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 768px) {
    .vwe-main-image {
        height: 300px;
    }
    
    .vwe-image-gallery {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
        max-height: 150px;
    }
    
    .vwe-gallery-thumb {
        height: 60px;
    }
    
    .vwe-image-nav {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .vwe-image-nav-prev {
        left: var(--vwe-space-sm);
    }
    
    .vwe-image-nav-next {
        right: var(--vwe-space-sm);
    }
    
    
    /* Lightbox mobile adjustments */
    .vwe-lightbox-nav {
        width: 50px;
        height: 50px;
    }
    
    .vwe-lightbox-nav-prev {
        left: -70px;
    }
    
    .vwe-lightbox-nav-next {
        right: -70px;
    }
}

@media (max-width: 480px) {
    .vwe-main-image {
        height: 250px;
    }
    
    .vwe-image-gallery {
        grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
        max-height: 120px;
    }
    
    .vwe-gallery-thumb {
        height: 50px;
    }
    
    .vwe-detail-images {
        gap: var(--vwe-space-sm);
    }
    
    /* Lightbox takes full screen on small devices */
    .vwe-lightbox-content {
        max-width: 100vw;
        max-height: 100vh;
        padding: var(--vwe-space-md);
    }
    
    .vwe-lightbox-nav {
        position: fixed;
        bottom: 20px;
    }
    
    .vwe-lightbox-nav-prev {
        left: 20px;
    }
    
    .vwe-lightbox-nav-next {
        right: 20px;
    }
    
    .vwe-lightbox-close {
        position: fixed;
        top: 20px;
        right: 20px;
    }
    
    .vwe-lightbox-info {
        position: fixed;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
    }
}

/* ==========================================================================
   No Images State
   ========================================================================== */

.vwe-no-images {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 300px;
    background: linear-gradient(135deg, var(--vwe-background) 0%, #f3f4f6 100%);
    border-radius: var(--vwe-radius-lg);
    border: 2px dashed var(--vwe-border);
    flex-direction: column;
    color: var(--vwe-light-gray);
}

.vwe-no-images::before {
    content: "📷";
    font-size: 3rem;
    margin-bottom: var(--vwe-space-md);
    opacity: 0.5;
}

.vwe-no-images-text {
    font-size: var(--vwe-font-size-lg);
    font-weight: 500;
}

/* ==========================================================================
   Accessibility Enhancements
   ========================================================================== */

.vwe-gallery-thumb:focus {
    outline: 2px solid var(--vwe-primary);
    outline-offset: 2px;
}

.vwe-image-nav:focus,
.vwe-lightbox-nav:focus,
.vwe-lightbox-close:focus {
    outline: 2px solid var(--vwe-primary);
    outline-offset: 2px;
}

/* Screen reader text */
.vwe-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    .vwe-main-image,
    .vwe-gallery-thumb,
    .vwe-image-nav,
    .vwe-lightbox,
    .vwe-lightbox-nav {
        transition: none;
        animation: none;
    }
    
    .vwe-main-image:hover,
    .vwe-gallery-thumb:hover {
        transform: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .vwe-main-image-container,
    .vwe-image-gallery {
        border: 2px solid var(--vwe-black);
    }
    
    .vwe-gallery-thumb {
        border-width: 3px;
    }
    
    .vwe-image-nav,
    .vwe-lightbox-nav,
    .vwe-lightbox-close {
        border: 2px solid var(--vwe-black);
    }
}