Menus on mobile devices

Hi, Love the Catch Everest theme. It is very easy to use, and looks great. I'm hoping you can help me figure out three issues I've encountered with menus on mobile devices. Here is my site - http://sorrows.wpengine.com/ It's 'live', but not ready for primetime yet. 1. I added a top menu above the logo within the Header Top Sidebar widget. I feel that it's necessary for my desktop audience, but on mobile phones, it looks out of place. Is there any way to hide this menu on mobile phones? 2. On mobile phones, each menu shrinks down to a bar called "Menu." Is there a way to rename these (e.g. "Main Menu", "Quick Links", etc.)? 3. My main menu has 8 categories, and each category will have a number of pages within it. On mobile phones, all pages display when you click on "Menu". However, I don't want users to have to scroll through dozens of items to find a particular page. Is it possible to have the sub-menus for each category activate 'on-click' instead of automatically displaying? Thank you for your help.