Modern gymnasium building, dynamic facade articulation, angular lines, bold colors, metallic materials, transparent glass walls, cantilevered rooflines, open-air courtyard, athletic tracks, basketball courts, sports equipment, motivational quotes, natural ventilation systems, energy-efficient lighting, sustainable design elements, vibrant murals, urban cityscape background, cloudy blue sky, soft warm lighting, shallow depth of field, 2/3 composition, realistic textures, ambient occlusion.