/* Portfolio Responsive */
@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 20px;
    }

    .portfolio-item img {
        height: 250px;
    }

    .portfolio-filters {
        flex-direction: column;
        align-items: center;
    }

    .filter-btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-item img {
        height: 200px;
    }

    .portfolio-overlay h3 {
        font-size: 18px;
    }
}