Footwear Size Filter for OpenCart

I need a product size filter exclusively for the Footwear category on our OpenCart site, based on a predefined size mapping table. Please follow our specific UI layout for implementation. Scope of work - Implement size filter for Footwear category in OpenCart. - Enable single-value selection with size charts for UA/EU, US, and CM. - Integrate filter with predefined size mapping table. - Ensure AJAX updates for product listings without page reloads. - Design filter UI strictly according to provided layout, including mobile responsiveness. References - Attached UI layout for the size filter. - Size correspondence table already prepared. Additional information - Hi! Here is the mini-TS for the footwear size filter. I have attached the UI layout and the size correspondence table that we've already prepared. Please let me know your estimated timeline and cost for implementing this logic on our OpenCart site.