enhance this bathroom render by improving material realism micro details and surface definition while strictly preserving the original lighting setup do not change light intensity exposure color temperature shadow direction or add any new light sources the bathroom has no windows maintain the exact artificial lighting and enclosed atmosphere improve texture sharpness tiles grout marble veins metal fixtures glass ceramics refine reflections and roughness maps increase subtle contrast for depth and reduce noise keep the scene photorealistic balanced and natural without introducing daylight window light or global illumination changes