Responsive Game UI Kit Implementation

I’m looking for a designer-developer who can take my existing art direction and translate it into a full, console-ready UI kit. The project covers four core screens—main menu, in-game HUD, inventory, and settings—and every element needs to feel just as good on a 720p handheld as it does on a 4K TV.

Primary platform is console, and all navigation must work flawlessly with a Nintendo controller first, while still accepting mouse input for future PC builds. Clear, readable typography, smart use of negative space, and component reusability are critical; I want to be able to drop new panels or buttons in later without breaking the visual rhythm or the underlying layout grid.

When you hand everything over I should receive:
• Fully implemented, resolution-responsive UI prefabs/components wired for controller focus states and mouse clicks.
• Layered design files (Figma, PSD, or Sketch) that mirror the in-engine build.
• A concise style guide covering color, type hierarchy, spacing, and interaction states.
• Demonstration scene or build that lets me cycle through each screen with Joy-Con/Pro Controller and a mouse to confirm input parity.

I’ll supply the visual references and any brand assets up front; you bring the clean layouts, smooth transitions, and systematic component structure that will let the interface evolve as the game grows.