generate a residential floor plan rendered in architectural sketch style drafted in grayscale only the drawing should resemble a conceptual architect s hand drafted presentation plan clean linework with varied line weights subtle graphite shading and soft shadow depth use black and gray tones exclusively no color no textures beyond light pencil style hatching include clearly defined walls with poche dark gray fill door swings and window openings accurately drawn minimal clean room labels in architectural sans serif typography light furniture layout for scale beds sofas dining table kitchen island indication of cabinetry and plumbing fixtures subtle shading to suggest depth but maintain clarity style should feel refined professional and conceptual similar to an early schematic design presentation background white or very light gray composition balanced and centered mood elegant restrained architectural style reference conceptual architectural drafting graphite sketch overlay output high resolution plan view only no perspective
