.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

.gallery-item a {
    text-decoration: none;
    color: inherit;
}

.gallery-item img {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
}

/* Lightbox (native dialog, injected by gallery.js) */
.lightbox {
    border: none;
    background: transparent;
    padding: 0;
    max-width: 90vw;
    max-height: 90vh;
    overflow: visible;
}

.lightbox::backdrop {
    background: rgba(0, 0, 0, 0.8);
}

figure.lightbox-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
    max-width: min(1200px, 90vw);
    box-sizing: border-box;
    background: #fff;
    margin: 0;
    padding: 2rem;
    border-radius: 4px;
    max-height: 85vh;
    overflow: auto;
    position: relative;
}

.lightbox-content img {
    width: 100%;
    height: auto;
    object-fit: contain;
    max-height: 80vh;
    min-width: 0;
}

.lightbox-content figcaption {
    color: #333;
    margin-top: 0.5rem;
}

.close-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: none;
    border: none;
    color: #666;
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

/* Detail page */
.painting-detail-container {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: 3rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 0;
}

.detail-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

.detail-info h2 {
    margin-top: 0;
}

.metadata-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1rem;
    margin: 1rem 0;
}

.metadata-grid dt {
    font-weight: bold;
}

.metadata-grid dd {
    margin: 0;
}

.back-link {
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .lightbox-content,
    .painting-detail-container {
        grid-template-columns: 1fr;
    }
}