Luxurious penthouse, sleek modern architecture, minimalist design, neutral color palette, floor-to-ceiling windows, sliding glass doors, open-plan living area, polished concrete floors, low-profile furniture, subtle textures, ambient lighting, recessed LED lights, spacious master bedroom, walk-in closet, freestanding tub, cityscape views, panoramic skyline, dramatic sunsets, warm soft glow, 1/1 composition, shallow depth of field, realistic rendering.