A opened software architecture textbook, lying on a wooden desk, surrounded by scattered papers, pens, and empty coffee cups, in a cozy study room with bookshelves, soft carpet, warm lighting, and a large window showing a rainy cityscape, detailed illustrations of system designs, flowcharts, and diagrams, colorful highlighted code snippets, clean layout, modern fonts, worn leather cover, golden page edges, subtle shadows, realistic textures, depth of field, shallow focus, 3/4 composition.