OpenCivil-Project/Open-Structures ? reverse-engineered prompt

Build me a Windows desktop app for learning 3D structural analysis and finite element methods.

I want a clear, interactive tool where I can draw a frame or building, assign materials and sections, add supports and loads, then run linear static, modal, and response spectrum analysis. It should show the structure in 3D, let me click members and nodes to inspect details, and make the results easy to understand with deformed shapes, mode animations, reactions, internal forces, and base shear.

A big part of this app should be transparency, so I can see the stiffness matrices, transformation matrices, fixed end forces, and other FEM steps instead of it feeling like a black box. It should save and load projects in a simple human readable format, and let me export analysis data for checking in Python or Excel.

Please make it look polished, educational, and easy to use, and if you need current docs for any libraries, look them up online.