Create a monochrome portrait of a lady seated casually on the floor near a wall illuminated by strong geometric shadows cast from a large window. She wears a textured dark overcoat layered over a light shirt, paired with light jeans and white sneakers. Her pose is relaxed yet thoughtful with one knee raised and one hand resting near her chin. She wears clear-framed glasses that catch subtle highlights. The lighting is directional and dramatic, creating crisp shadow patterns behind her and soft contrast across her face. The overall mood is modern and introspective with a refined balance of light, shadow, and texture.