/* Gallery Container: 4-column layout */
.gallery-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    border-style: none;
}

/* Gallery Item: 4 columns */
.gallery-container .gallery-item,
.gallery-container .gallery-image-container {
    flex: 0 0 calc(25% - 16px); /* 25% width for 4 columns, accounting for gap */
    max-width: calc(25% - 16px);
    box-sizing: border-box;
    display: block;
    margin: 0;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

/* Hover Effect */
.gallery-container .gallery-item:hover,
.gallery-container .gallery-image-container:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Thumbnail Image */
.gallery-container .gallery-item img,
.gallery-container .gallery-image-container img {
    width: 100%;
    height: auto;
    display: block;
}

/* Responsive Adjustments */
@media (max-width: 992px) {
    /* 3 columns on tablets */
    .gallery-container .gallery-item,
    .gallery-container .gallery-image-container {
        flex: 0 0 calc(33.333% - 16px);
        max-width: calc(33.333% - 16px);
    }
}

@media (max-width: 768px) {
    /* 2 columns on mobile */
    .gallery-container .gallery-item,
    .gallery-container .gallery-image-container {
        flex: 0 0 calc(50% - 16px);
        max-width: calc(50% - 16px);
    }
}

@media (max-width: 576px) {
    /* 1 column on small mobile */
    .gallery-container .gallery-item,
    .gallery-container .gallery-image-container {
        flex: 0 0 100%;
        max-width: 100%;
    }
}