sports complex 3d model

Create a realistic 3D model based on the uploaded 2D architectural floor plan. The object is a sports complex / indoor arena with multiple courts, seating areas, corridors, and service rooms. Strictly follow the proportions, layout, and geometry of the 2D plan. Extrude walls, floors, and structural elements to realistic heights. Add depth and volume where necessary (walls, courts, tribunes, rooms), but do not change the original layout or design. Courts should be clearly separated, with correct markings and boundaries. Seating areas should be modeled as tiered tribunes. Style: clean architectural visualization, neutral materials, realistic scale. The final 3D model should be suitable for architectural visualization and further editing. Output format: OBJ or STL.