/* Gallery Zoom Effects */
.sigma_portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
}
.sigma_portfolio-item img {
    transition: transform 0.3s ease;
}
.sigma_portfolio-item:hover img {
    transform: scale(1.05);
}
.gallery-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 2;
}
.sigma_portfolio-item:hover .gallery-overlay {
    opacity: 1;
}
.gallery-zoom-btn {
    background: #d32f2f;
    color: #fff;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}
.sigma_portfolio-item:hover .gallery-zoom-btn {
    transform: translateY(0);
}