photorealistic exhibition hall background for nacs trade show keep the exact same booth design structure materials colors text and logos completely unchanged do not modify regenerate or alter the stand in any way replace only the surrounding environment a sober moderately dark professional convention hall interior polished dark grey concrete floor with subtle reflections high industrial ceiling with exposed metal trusses dimmed overhead lighting creating a low key focused atmosphere neighboring exhibition booths softly visible in the background out of focus neutral dark tones no distracting colors or logos a few visitors in business attire walking naturally in the distance subtle ambient shadows moody but clean professional lighting photorealistic eye level shot shallow depth of field on background negative prompt altered stand distorted logo modified text changed materials bright white background empty hall cartoon illustration overexposed
