@media (max-width: 900px) {
    .desktop-menu {
        display: none;
    }

    .hamburger {
        display: block;
        font-size: 2rem;
        background: none;
        border: none;
        color: white;
        cursor: pointer;
        padding: 0.5rem 1rem;
        position: absolute;
        left: 0;
        top: 0;
    }

    .mobile-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 100%;
        left: 0;
        background-color: #007bff; /* Blau */
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .mobile-menu.active {
        display: flex;
    }

    .mobile-menu > li {
        margin: 0;
        width: 100%;
        text-align: left;
    }

    .mobile-menu li a {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
        color: white;
    }
}