Classic Windows UI Designs

I’m updating a Windows-based application and need a set of clean, classic, professional screens that feel native to the platform. Specifically I’m after a polished welcome screen, a secure-looking login screen, and a consistent button set that ties everything together.

I already have a broad color direction in mind, but it isn’t locked down. I’d value your input on the exact palette and typography choices so the final look feels trustworthy without feeling dated.

Deliverables I expect from you:
• High-resolution mock-ups or clickable prototypes for the welcome screen, login screen, and button states (normal, hover, disabled, pressed).
• Layered source files (Figma, Adobe XD, or Photoshop) so my developers can easily extract assets.
• A concise style cheat-sheet summarising colors, fonts, and spacing rules to keep future screens consistent.

If you’ve designed Windows or desktop software UIs before—especially in a classic corporate style—please share a sample. I’m ready to move quickly once I see the right fit.