.gumetabox-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
}

.gumetabox-gallery-item a {
    display: block;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: 5px;
}

.gumetabox-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gumetabox-gallery-item a:hover img {
    transform: scale(1.1);
}

/* Lightbox Styles */
.gumetabox-lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.92);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.gumetabox-lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.gumetabox-lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 80%;
}

.gumetabox-lightbox-content img {
    max-width: 100%;
    max-height: 100%;
    display: block;
    height: auto;
    width: auto;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.gumetabox-lightbox-close,
.gumetabox-lightbox-prev,
.gumetabox-lightbox-next {
    position: absolute;
    background: #000000;
    color: #ffffff;
    border: 1px solid #ffffff;
    padding: 10px;
    cursor: pointer;
    font-size: 24px;
    line-height: 1;
    user-select: none;
    border-radius: 5px;
    transition: background-color 0.2s ease;
}

.gumetabox-lightbox-close:hover,
.gumetabox-lightbox-prev:hover,
.gumetabox-lightbox-next:hover,
.gumetabox-lightbox-download:hover {
    background: #f0f0f0;
}


.gumetabox-lightbox-close {
    top: 20px;
    right: 20px;
}

.gumetabox-lightbox-prev,
.gumetabox-lightbox-next {
    top: 50%;
    transform: translateY(-50%);
}

.gumetabox-lightbox-prev {
    left: 20px;
}

.gumetabox-lightbox-next {
    right: 20px;
}

.gumetabox-lightbox-download {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    background: #000000;
    color: #ffffff;
    border: 1px solid #ffffff;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 16px;
    border-radius: 5px;
    text-decoration: none;
    transition: background-color 0.2s ease;
}