2 menus Responsive website Seo question

[socratic-goat777]

Hi there

Thanks for reading my post.  İ am fairly new to SEO and dont know much coding.  İ purchased an opencart theme and am working with a developer to modify it to make it more user friendly.  The website is responsive and İ modified the menu for the desktop but now it doesnt have categories but just products. So it doesnt have URL for categories but just filter.  So the developer recommended to add the mobile menu  which has categories, and subcategories back to the desktop menu.  İm not sure if this is a kosher approach to seo.  Here is the link:

As you can see there is a menu in the top menu and menu on the Main Menu.  THoughts?  will this be problem for duplicate content?  The Main menu keywords are crucial and is what the website is revolving around.

New website

[MichaelC-15022]

In general, you should expect Google to look at your desktop pages when it's calculating PageRank, link juice flow, etc., NOT your mobile menu.  So if there are links to your category pages in ONLY your mobile menu and not your desktop, then your category pages won't rank as well as they should.