Dummy Windows App for Concept Showcase

I'm in need of a dummy Windows application to effectively showcase a concept. I have a PDF that serves as a design and operations reference.

Key Requirements:
- The application does not need to integrate with any API.
- It should demonstrate user interface navigation.
- The design style should be modern and minimalistic.

Ideal Skills:
- Proficiency in Windows application development.
- Experience with modern, minimalistic UI design.
- Ability to understand and implement design from provided references.