Shopify Conditional logic and new pages for a process for particular products

On Shopify I need to create a process for customers to be able to select lenses with their frame selection and this needs to include some conditional logic. There will be a few variations with the lens selections and they need to all be able to be tracked for inventory. Needs to be a good looking functional process on all product pages for the product type: Frames This includes that when the customer makes a selection and adds it to the cart, the cart is explanatory and easy to understand for the customer on what their selection is. I have examples of the process. But you must be able to create this process using coding and NOT an app.