header {
    background-color: #ffffff;
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid #ddd;
    position: relative;
}

.logo {
    max-width: 400px;
    margin: 20px auto;
    display: block;
}

nav {
    position: relative;
}

#menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    padding: 10px 0;
}

#menu li {
    list-style: none;
}

#menu li a {
    text-decoration: none;
    color: #333;
    font-weight: 600;
    transition: color 0.3s ease;
}

#menu li a:hover {
    color: #0077cc;
}

/* Hamburger Menü */
#hamburger {
    display: none;
    cursor: pointer;
    margin-bottom: 10px;
}

.burger {
    width: 30px;
    height: auto;
}

#menu-toggle {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    #menu {
        display: none;
        flex-direction: column;
        background-color: #ffffff;
        padding: 20px;
        border-top: 1px solid #ccc;
        border-bottom: 1px solid #ccc;
    }

    #menu-toggle:checked + #hamburger + #menu {
        display: flex;
    }

    #hamburger {
        display: block;
    }
}