interior shot photorealistic interior render of an existing staircase model preserve the exact stair geometry and proportions with no structural modifications style warm contemporary minimalism materials light european oak treads with natural grain soft limestone cladding on adjacent walls matte off white plaster finish brushed champagne bronze handrail details clear low iron glass balustrades lighting soft indirect cove lighting integrated beneath handrails and ceiling perimeter warm natural sunlight entering through large windows atmosphere calm refined luxury residential interior subtle shadows realistic textures high material fidelity architectural visualization quality ultra detailed realistic reflections premium finishes architecture
