/* ==========================================================================
   GalleryLab - Grid & Lightbox Styles
   ========================================================================== */

/* ---------- CSS Custom Properties ---------- */
.gallerylab {
    --gl-columns: 3;
    --gl-gap: 16px;
    --gl-radius: 8px;
    --gl-overlay-bg: #000000;
    --gl-overlay-text: #ffffff;
}

/* ---------- Gallery Header ---------- */
.gallerylab-header {
    margin-bottom: 1.5rem;
}

.gallerylab-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
}

.gallerylab-description {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* ---------- Image Grid ---------- */
.gallerylab-grid {
    display: grid;
    grid-template-columns: repeat(var(--gl-columns), 1fr);
    gap: var(--gl-gap);
}

.gallerylab-grid-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--gl-radius);
    background: #f1f5f9;
    aspect-ratio: 1;
    cursor: pointer;
}

.gallerylab-grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hover effects */
.gallerylab--hover-zoom .gallerylab-grid-item:hover img {
    transform: scale(1.08);
}

.gallerylab--hover-fade .gallerylab-grid-item:hover img {
    opacity: 0.75;
}

/* Image overlay (title on hover) */
.gallerylab-grid-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.75rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: var(--gl-overlay-text);
    font-size: 0.875rem;
    font-weight: 500;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    pointer-events: none;
}

.gallerylab-grid-item:hover .gallerylab-grid-item-overlay,
.gallerylab-grid-item:focus-visible .gallerylab-grid-item-overlay {
    transform: translateY(0);
}

/* ---------- Lightbox ---------- */
.gallerylab-lightbox {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.92);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.gallerylab-lightbox[aria-hidden="false"] {
    opacity: 1;
    visibility: visible;
}

.gallerylab-lightbox-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 90vw;
    max-height: 90vh;
    border-radius: 4px;
    overflow: hidden;
}

.gallerylab-lightbox-image {
    max-width: 100%;
    max-height: 82vh;
    object-fit: contain;
    user-select: none;
    display: block;
}

.gallerylab-lightbox-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 1.5rem;
    line-height: 1;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

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

.gallerylab-lightbox-prev,
.gallerylab-lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 3rem;
    height: 3rem;
    border: none;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 1.25rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.gallerylab-lightbox-prev {
    left: 1rem;
}

.gallerylab-lightbox-next {
    right: 1rem;
}

.gallerylab-lightbox-prev:hover,
.gallerylab-lightbox-prev:focus-visible,
.gallerylab-lightbox-next:hover,
.gallerylab-lightbox-next:focus-visible {
    background: rgba(255, 255, 255, 0.3);
}

.gallerylab-lightbox-caption {
    width: 100%;
    text-align: center;
    color: #fff;
    font-size: 0.9375rem;
    line-height: 1.5;
    padding: 0.4rem 1rem;
    background: rgba(0, 0, 0, 0.6);
}

.gallerylab-lightbox-counter {
    position: absolute;
    top: 1rem;
    left: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

/* ---------- Gallery List (Cards) ---------- */
.gallerylab-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.gallerylab-list-card {
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.gallerylab-list-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.gallerylab-list-card-image {
    overflow: hidden;
}

.gallerylab-list-card-image img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    display: block;
    background: #f1f5f9;
    transition: transform 0.3s ease;
}

.gallerylab-list-card:hover .gallerylab-list-card-image img {
    transform: scale(1.05);
}

.gallerylab-list-card-body {
    padding: 1.25rem;
}

.gallerylab-list-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 0.375rem;
    color: #1e293b;
}

.gallerylab-list-card-desc {
    font-size: 0.875rem;
    color: #64748b;
    margin: 0 0 0.75rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.gallerylab-list-card-count {
    font-size: 0.8125rem;
    color: #94a3b8;
}

/* ---------- Empty State ---------- */
.gallerylab-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: #94a3b8;
}

/* ---------- Responsive ---------- */
@media (max-width: 991px) {
    .gallerylab-grid {
        --gl-columns: 3;
    }
}

@media (max-width: 767px) {
    .gallerylab-grid {
        --gl-columns: 2;
    }

    .gallerylab-lightbox-prev,
    .gallerylab-lightbox-next {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 575px) {
    .gallerylab-grid {
        --gl-columns: 1;
    }

    .gallerylab-list {
        grid-template-columns: 1fr;
    }
}

/* ---------- Accessibility ---------- */
.gallerylab-grid-item:focus-visible {
    outline: 3px solid #2563eb;
    outline-offset: 2px;
}

.gallerylab-lightbox-close:focus-visible,
.gallerylab-lightbox-prev:focus-visible,
.gallerylab-lightbox-next:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .gallerylab-grid-item img,
    .gallerylab-grid-item-overlay,
    .gallerylab-lightbox,
    .gallerylab-card {
        transition: none;
    }
}