header {
    width: 100%;
    
    display: flex;
    align-items: center;
    justify-content: space-between;
    
    position: absolute;
    
    top: 0;
    left: 0;
    
    padding: 0 100px;
    
    z-index: 3;
}

.menu-core {
    width: 64px;
    height: 64px;
}

#fold-logo {
    width: 100%;
    height: 100%;
    
    object-fit: cover;
}

#main-menu-links {
    display: flex;
    align-items: center;
    gap: 20px;
}

#main-menu-links > a {
    color: #ffffff;
    
    font-weight: bold;
}

#main-menu-links > span {
    color: #ffffff;
    
    cursor: pointer;
}

#mobile-menu-open-btn {
    color: #ffffff;
    
    font-size: 36px;
    
    display: flex;
    align-items: center;
    justify-content: flex-end;
    
    cursor: pointer;
    
    display: none;
}

#mobile-menu {
    width: 100%;
    height: 100vh;
    
    background: #ffffff;
    
    position: fixed;
    
    top: 0;
    left: 0;
    
    z-index: 3;
    
    display: none;
}

#mobile-menu > div {
    width: 100%;
    height: 100%;
    
    position: relative;
}

#mobile-menu-close-btn {
    font-size: 24px;
    
    position: absolute;
    
    top: 20px;
    right: 20px;
    
    z-index: 3;
    
    cursor: pointer;
}

#mobile-menu-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    
    position: absolute;
    
    top: 50%;
    left: 50%;
    
    transform: translate(-50%, -50%);
    
    z-index: 3;
}

#mobile-menu-links > a {
    font-weight: bold;
}

#mobile-menu-social-media-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

#mobile-menu-lang-switcher {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

#mobile-menu-lang-switcher > span {
    cursor: pointer;
}

@media only screen and (max-width: 1200px) {
    header {
        padding: 0 50px;
    }
}

@media only screen and (max-width: 700px) {
    header {
        padding: 0 20px;
    }
    
    #main-menu-links {
        display: none;
    }
    
    #mobile-menu-open-btn {
        display: flex;
    }
}