/* Photo Gallery Advanced Styles */

.pga-gallery {
    width: 100%;
    margin: 2rem 0;
}

.pga-gallery__grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, 1fr);
}

/* Адаптивные колонки на основе data-атрибута */
.pga-gallery[data-columns="2"] .pga-gallery__grid {
    grid-template-columns: repeat(2, 1fr);
}

.pga-gallery[data-columns="3"] .pga-gallery__grid {
    grid-template-columns: repeat(2, 1fr);
}

.pga-gallery[data-columns="4"] .pga-gallery__grid {
    grid-template-columns: repeat(2, 1fr);
}

.pga-gallery[data-columns="5"] .pga-gallery__grid {
    grid-template-columns: repeat(2, 1fr);
}

.pga-gallery[data-columns="6"] .pga-gallery__grid {
    grid-template-columns: repeat(2, 1fr);
}

/* Планшеты */
@media (min-width: 768px) {
    .pga-gallery__grid {
        gap: 1.5rem;
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pga-gallery[data-columns="2"] .pga-gallery__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pga-gallery[data-columns="3"] .pga-gallery__grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pga-gallery[data-columns="4"] .pga-gallery__grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .pga-gallery[data-columns="5"] .pga-gallery__grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .pga-gallery[data-columns="6"] .pga-gallery__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Десктоп */
@media (min-width: 1024px) {
    .pga-gallery__grid {
        gap: 2rem;
    }
    
    .pga-gallery[data-columns="2"] .pga-gallery__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pga-gallery[data-columns="3"] .pga-gallery__grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pga-gallery[data-columns="4"] .pga-gallery__grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .pga-gallery[data-columns="5"] .pga-gallery__grid {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .pga-gallery[data-columns="6"] .pga-gallery__grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* Элемент галереи */
.pga-gallery__item {
    display: block;
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    background-color: #f0f0f0;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    aspect-ratio: 1 / 1;
}

.pga-gallery__item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.pga-gallery__item:focus {
    outline: 2px solid #0073aa;
    outline-offset: 2px;
}

/* Обертка изображения */
.pga-gallery__image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* Изображение */
.pga-gallery__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.pga-gallery__item:hover .pga-gallery__image {
    transform: scale(1.05);
}

/* Lazy load эффект */
.pga-gallery__image.lazyload,
.pga-gallery__image.lazyloading {
    filter: blur(10px);
    transition: filter 0.3s ease;
}

.pga-gallery__image.lazyloaded {
    filter: blur(0);
}

/* Плейсхолдер во время загрузки */
.pga-gallery__image-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        #f0f0f0 0%,
        #e0e0e0 50%,
        #f0f0f0 100%
    );
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    z-index: -1;
}

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

/* Скрываем плейсхолдер после загрузки */
.pga-gallery__image.lazyloaded ~ .pga-gallery__image-wrapper::before,
.pga-gallery__image:not(.lazyload)::before {
    display: none;
}

/* Оверлей при наведении */
.pga-gallery__item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0);
    transition: background 0.3s ease;
    pointer-events: none;
}

.pga-gallery__item:hover::after {
    background: rgba(0, 0, 0, 0.1);
}

/* Адаптивность для маленьких экранов */
@media (max-width: 480px) {
    .pga-gallery {
        margin: 1rem 0;
    }
    
    .pga-gallery__grid {
        gap: 0.75rem;
    }
    
    .pga-gallery__item {
        border-radius: 6px;
    }
}

/* Оптимизация производительности */
.pga-gallery__image {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* Print стили */
@media print {
    .pga-gallery__grid {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .pga-gallery__item {
        width: calc(33.333% - 0.5rem);
        page-break-inside: avoid;
    }
    
    .pga-gallery__item:hover {
        transform: none;
        box-shadow: none;
    }
}