@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: #0a192f;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 2rem 0;
        gap: 1.5rem;
    }
    .nav-links.active {
        left: 0;
    }
    .hamburger {
        display: block;
    }
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content h1 {
        font-size: 2.2rem;
    }
    .services-grid, .portfolio-grid {
        grid-template-columns: 1fr 1fr;
    }
    .section-header h2 {
        font-size: 1.8rem;
    }
}
@media (max-width: 480px) {
    .services-grid, .portfolio-grid {
        grid-template-columns: 1fr;
    }
    .hero-buttons {
        justify-content: center;
    }
}