@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        flex-direction: column;
        text-align: center;
    }

    .content-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        padding: 1rem;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 1rem;
    }

    form {
        margin: 1rem;
        padding: 0.5rem;
    }

    form input,
    form select,
    form button {
        font-size: 0.9rem;
        padding: 0.4rem;
    }
}