improve the given architectural image into a highly realistic daytime architectural visualization do not change the architectural design proportions structure materials layout bridge form columns roof geometry signage or landscape arrangement pedestrian bridge stone walls water body trees and people positions must remain exactly the same focus only on lighting textures material realism atmosphere and sky quality lighting use natural midday daylight with a realistic sun positionsoft but defined shadows not flat not overexposed balanced global illumination with proper light bounce under the bridge and shaded areasclear contrast between sunlit surfaces and shaded zonesmaterials textures enhance stone textures to look natural rough and high resolutionimprove concrete surfaces with subtle imperfections and realistic tone variationrefine timber and structural elements with accurate color depth and material grainmake railings and metal elements slightly reflective but realisticsky atmosphere replace the sky with a realistic clear blue daytime skysoft atmospheric depth slight haze in the distance natural daylight color temperature no artificial or washed out tones overall style photorealistic architectural renderingprofessional visualization quality similar to v ray enscape lumion realistic mode clean sharp details with realistic human scale and shadowscalm natural believable daytime environmentthe final image should look like a real photograph of a completed cultural island project taken during a bright pleasant day