/* ========================================
   Modern Gallery Component
   Features: Lightbox, Lazy Loading, Touch Support
   ======================================== */

/* ========================================
   Gallery Grid Layout
   ======================================== */
.gallery-section {
    margin-bottom: var(--space-xl);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.gallery-section:last-child {
    border-bottom: none;
}

.gallery-section h2 {
    margin-bottom: var(--space-md);
    text-align: center;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.gallery-item {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: var(--border-radius-md);
    background-color: var(--color-bg-tertiary);
    cursor: pointer;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.gallery-item:hover,
.gallery-item:focus-within {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px var(--color-shadow-strong);
}

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

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-item a {
    display: block;
    width: 100%;
    height: 100%;
}

.gallery-item a:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Lazy Loading Placeholder */
.gallery-item img[loading="lazy"] {
    background: linear-gradient(90deg, var(--color-bg-tertiary) 25%, var(--color-bg-secondary) 50%, var(--color-bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

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

    100% {
        background-position: -200% 0;
    }
}

/* ========================================
   Lightbox Modal
   ======================================== */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

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

.lightbox-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
    text-align: center;
    font-size: var(--font-size-base);
}

/* Lightbox Controls */
.lightbox-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 50px;
    height: 50px;
    border: none;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 2rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
    z-index: calc(var(--z-modal) + 1);
}

.lightbox-close:hover,
.lightbox-close:focus {
    background-color: rgba(255, 255, 255, 0.4);
}

.lightbox-close:focus-visible {
    outline: 3px solid white;
    outline-offset: 3px;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    border: none;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    border-radius: var(--border-radius-md);
}

.lightbox-nav:hover,
.lightbox-nav:focus {
    background-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-nav:focus-visible {
    outline: 3px solid white;
    outline-offset: 3px;
}

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

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

.lightbox-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.lightbox-nav:disabled:hover {
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.2);
}

/* Image Counter */
.lightbox-counter {
    position: absolute;
    top: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-xs) var(--space-md);
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-small);
    font-weight: 600;
}

/* ========================================
   Flexslider (Homepage Slider)
   ======================================== */
.flexslider {
    position: relative;
    margin: var(--space-lg) 0;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: 0 4px 20px var(--color-shadow-strong);
}

.flexslider .slides {
    list-style: none;
    margin: 0;
    padding: 0;
}

.flexslider .slides>li {
    display: none;
    position: relative;
}

.flexslider .slides>li:first-child {
    display: block;
}

.flexslider .slides img {
    width: 100%;
    height: auto;
    display: block;
}

/* Flexslider Navigation */
.flex-direction-nav {
    position: absolute;
    width: 100%;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    pointer-events: none;
}

.flex-direction-nav a {
    pointer-events: all;
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast);
    text-decoration: none;
}

.flex-direction-nav a:hover,
.flex-direction-nav a:focus {
    background-color: rgba(0, 0, 0, 0.8);
}

.flex-prev {
    margin-left: var(--space-sm);
}

.flex-next {
    margin-right: var(--space-sm);
}

/* Flexslider Control Nav (Dots) */
.flex-control-nav {
    position: absolute;
    bottom: var(--space-md);
    width: 100%;
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    list-style: none;
    margin: 0;
    padding: 0;
}

.flex-control-nav li {
    margin: 0;
}

.flex-control-paging li a {
    width: 12px;
    height: 12px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    display: block;
    transition: background-color var(--transition-fast);
    text-indent: -9999px;
}

.flex-control-paging li a:hover,
.flex-control-paging li a.flex-active {
    background-color: rgba(255, 255, 255, 1);
}

/* ========================================
   Responsive Adjustments
   ======================================== */

/* Tablet */
@media screen and (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--space-sm);
    }
}

/* Mobile */
@media screen and (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--space-sm);
    }

    .lightbox-nav {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .lightbox-close {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

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

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

/* Small Mobile */
@media screen and (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .lightbox-content {
        max-width: 95%;
        max-height: 95%;
    }
}

/* 8K Displays */
@media screen and (min-width: 3840px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
        gap: var(--space-lg);
    }
}

/* ========================================
   Touch Device Optimizations
   ======================================== */
@media (hover: none) and (pointer: coarse) {
    .gallery-item:hover {
        transform: none;
    }

    .gallery-item:active {
        transform: scale(0.98);
    }

    .lightbox-nav {
        background-color: rgba(255, 255, 255, 0.3);
    }
}