.hamburger {
    width: 40px;
    height: 30px;
    position: relative;
    cursor: pointer;
    display: none;
}

.hamburger span {
    background: #fff;
    position: absolute;
    height: 4px;
    width: 100%;
    left: 0;
    transition: all 0.3s ease;
}

/* Mobilní menu */
.mobile-menu {
    display: none;
    flex-direction: column;
    background: #363636;
    position: absolute;
    top: 70px;
    right: 20px;
    padding: 1rem;
    border: 1px solid #fff;
}

.mobile-menu a {
    color: white;
    text-decoration: none;
    margin: 10px 0;
}