enhance the existing orthographic top down 3d floor plan with ultra photorealistic materials and lighting while keeping the exact camera angle and layout do not change layout proportions camera angle or furniture placement keep strict 90 top view orthographic projection upgrade rendering quality to high end architectural visualization standard photorealism enhancements materials use physically based rendering pbr materials add realistic wood grain variation to oak parquet subtle color variation natural knots soft fabric texture on sofa and armchair visible weave natural linen texture for rug real marble or quartz stone texture on kitchen island subtle veining brushed metal details on handles and appliances realistic ceramic reflections on wc fixtures slight gloss variation on tiles not flat grey lighting simulate real daylight entering from window direction soft ambient occlusion in corners and under furniture subtle shadow depth below dining table and sofa no overexposed white walls realistic light falloff surface imperfections very subtle micro surface variation on walls slight reflection softness on cabinet fronts natural shadow gradients rendering quality high resolution textures 4k equivalent ray traced global illumination soft realistic shadow edges real world scale materials avoid cgi look avoid flat shading avoid plastic appearance avoid overly bright white surfaces make it look like a professional real estate marketing render from a luxury developer in germany subtle realism warm tones natural material depth premium finish