Modern minimalist computer screen, freeware architectural design software interface, sleek glass desk, ergonomic office chair, bespectacled mature architect, short grey hair, glasses perched on forehead, focused facial expression, hand resting on mouse, clicking and dragging, designing 3D building model, futuristic skyscraper, cantilevered roof, reflective glass windows, intricate steel beams, urban cityscape background, afternoon sunlight streaming through window, warm ambient lighting, shallow depth of field.