River Phone Wallpaper Prompt for Image2

Aspect ratio: 9:16. Wide cinematic composition of an architectural space: a grand spiral staircase wrapped around a glass atrium, with geometric concrete beams and steel railings creating strong vertical and diagonal lines. Low-angle perspective looking up through multiple floors, with soft diffused light entering from a large skylight above, casting warm golden reflections on polished marble floors and metal surfaces. The scene features layered depth: foreground columns, mid-level walkways, and a distant glass wall revealing a twilight city skyline. A subtle gradient of cool blue shadows and warm amber light. Clean, minimalist aesthetic with high detail on structural edges, reflections, and material textures. No people. Quality: high resolution, sharp details, atmospheric lighting, professional architectural photography style