/**
 * Gallery Styles
 *
 * @package Kuznek
 */

/* ==========================================================================
   Gallery Filters
   ========================================================================== */

.gallery-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--kuznek-space-sm);
    margin-bottom: var(--kuznek-space-xl);
}

.filter-btn {
    padding: var(--kuznek-space-sm) var(--kuznek-space-lg);
    background: var(--kuznek-white);
    border: 2px solid var(--kuznek-light-gray);
    border-radius: var(--kuznek-radius-full);
    font-family: var(--kuznek-font-primary);
    font-size: var(--kuznek-text-sm);
    font-weight: 500;
    color: var(--kuznek-dark);
    cursor: pointer;
    transition: all var(--kuznek-transition-fast);
    min-height: 44px;
}

.filter-btn:hover,
.filter-btn:focus {
    border-color: var(--kuznek-primary);
    color: var(--kuznek-primary);
}

.filter-btn:focus-visible {
    outline: none;
    box-shadow: var(--kuznek-focus-ring);
}

.filter-btn.is-active {
    background: var(--kuznek-primary);
    border-color: var(--kuznek-primary);
    color: var(--kuznek-white);
}

/* ==========================================================================
   Gallery Grid
   ========================================================================== */

.gallery-grid {
    display: grid;
    gap: var(--kuznek-space-md);
    grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 640px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--kuznek-space-lg);
    }
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
    border-radius: var(--kuznek-radius-lg);
    cursor: pointer;
    background: var(--kuznek-light-gray);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--kuznek-transition-slow), opacity var(--kuznek-transition-base);
}

.gallery-item img:not(.is-loaded) {
    opacity: 0;
}

.gallery-item img.is-loaded {
    opacity: 1;
}

.gallery-item:hover img,
.gallery-item:focus img,
.gallery-item:focus-within img {
    transform: scale(1.1);
}

.gallery-item:focus {
    outline: none;
}

.gallery-item:focus-visible {
    box-shadow: var(--kuznek-focus-ring);
}

/* Overlay */
.gallery-item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 50%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--kuznek-space-md);
    opacity: 0;
    transition: opacity var(--kuznek-transition-base);
    pointer-events: none;
}

.gallery-item:hover .gallery-item-overlay,
.gallery-item:focus .gallery-item-overlay,
.gallery-item:focus-within .gallery-item-overlay {
    opacity: 1;
}

.gallery-item-title {
    color: var(--kuznek-white);
    font-size: var(--kuznek-text-base);
    font-weight: 600;
    margin: 0 0 var(--kuznek-space-xs);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.gallery-item-category {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--kuznek-text-sm);
}

/* Hidden gallery data */
.gallery-data {
    display: none;
}

/* ==========================================================================
   Lightbox
   ========================================================================== */

.lightbox {
    position: fixed;
    inset: 0;
    z-index: var(--kuznek-z-modal);
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--kuznek-transition-base), visibility var(--kuznek-transition-base);
}

.lightbox.is-open {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 75vh;
    object-fit: contain;
    border-radius: var(--kuznek-radius-md);
}

.lightbox-caption {
    color: var(--kuznek-white);
    text-align: center;
    margin-top: var(--kuznek-space-md);
    font-size: var(--kuznek-text-sm);
    max-width: 600px;
}

/* Lightbox Controls */
.lightbox-close {
    position: absolute;
    top: var(--kuznek-space-lg);
    right: var(--kuznek-space-lg);
    width: 48px;
    height: 48px;
    background: var(--kuznek-white);
    border: none;
    border-radius: var(--kuznek-radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--kuznek-transition-fast), background var(--kuznek-transition-fast);
    z-index: 10;
}

.lightbox-close:hover {
    background: var(--kuznek-light-gray);
    transform: scale(1.1);
}

.lightbox-close:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--kuznek-white);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: var(--kuznek-white);
    border: none;
    border-radius: var(--kuznek-radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--kuznek-transition-fast), background var(--kuznek-transition-fast);
    z-index: 10;
}

.lightbox-nav:hover {
    background: var(--kuznek-light-gray);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-nav:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--kuznek-white);
}

.lightbox-prev {
    left: var(--kuznek-space-lg);
}

.lightbox-next {
    right: var(--kuznek-space-lg);
}

@media (max-width: 767px) {
    .lightbox-close,
    .lightbox-nav {
        width: 40px;
        height: 40px;
    }

    .lightbox-close {
        top: var(--kuznek-space-md);
        right: var(--kuznek-space-md);
    }

    .lightbox-prev {
        left: var(--kuznek-space-sm);
    }

    .lightbox-next {
        right: var(--kuznek-space-sm);
    }
}

/* Lightbox Thumbnails */
.lightbox-thumbnails {
    position: absolute;
    bottom: var(--kuznek-space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--kuznek-space-sm);
    padding: var(--kuznek-space-sm);
    background: rgba(0, 0, 0, 0.5);
    border-radius: var(--kuznek-radius-md);
    max-width: 90vw;
    overflow-x: auto;
}

.lightbox-thumb {
    width: 60px;
    height: 60px;
    padding: 0;
    border: 2px solid transparent;
    border-radius: var(--kuznek-radius-sm);
    cursor: pointer;
    background: none;
    overflow: hidden;
    flex-shrink: 0;
    transition: border-color var(--kuznek-transition-fast);
}

.lightbox-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lightbox-thumb:hover,
.lightbox-thumb:focus {
    border-color: rgba(255, 255, 255, 0.5);
}

.lightbox-thumb.is-active {
    border-color: var(--kuznek-white);
}

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.lightbox.is-open .lightbox-content {
    animation: fadeIn 0.3s ease-out;
}

@media (prefers-reduced-motion: reduce) {
    .lightbox.is-open .lightbox-content {
        animation: none;
    }
}