Modern freeware architectural drawing software interface, minimalist desktop background, Windows or macOS system, 4K resolution, sleek fonts, intuitive icons, customizable UI, drag-and-drop tools, grid paper background, real-time rendering, precise cursor, various shape and line tools, color palette, layer management system, undo and redo buttons, zoom in/out, rotate canvas, orthogonal and isometric views, building information modeling (BIM), 3D visualization, urban planning, landscape design, interior design, futuristic cityscape, modern skyscraper, green architecture, sustainable design, daylight simulation, realistic shadows and lighting.