body,
html {
    background-color: var(--white-shiri);
}

.portfolio-mosaic-wrapper {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 200px;
    gap: 8px;
    width: 100%;
}

.mosaic-item.main-thumb {
    grid-column: span 2;
    grid-row: span 2;
}

.portfolio-img-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--gray-800);
}

.portfolio-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1) !important;
}

.mosaic-item a:hover img {
    transform: scale(1.1) !important;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mosaic-item a:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-overlay i {
    color: #fff;
    font-size: 2rem;
}

@media (max-width: 768px) {
    .portfolio-mosaic-wrapper {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 150px;
    }

    .mosaic-item.main-thumb {
        grid-row: span 1;
    }
}

.project-info-block {
    background-color: var(--gray-800) !important;
    width: 100% !important;
    max-width: 100vw !important;
    overflow-x: hidden !important;
}

.project-info-block {
    margin-right: 0 !important;
    margin-left: 0 !important;
    padding-right: 0 !important;
    padding-left: 0 !important;
}

.sub-category-nav .btn-outline-dark {
    border-color: var(--gray-800);
    color: var(--gray-800);
}

.sub-category-nav .btn-outline-dark:hover {
    background-color: var(--gray-800);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.sub-category-section-wrapper {
    scroll-margin-top: 50px;
}

.main-category-header{
    min-height: 138px;
    
    background: linear-gradient(to bottom, rgba(30,30,30,0.4), var(--brown));
}