Seaside coastal penthouses, ocean-inspired color palette, calming blues, whites, sandy neutrals, weathered wood accents, beachy textures, modern minimalist design, floor-to-ceiling windows, sliding glass doors, panoramic ocean views, natural light, airy atmosphere, driftwood furniture, coral patterned rugs, shell decorative accessories, soft warm lighting, 1/1 composition, realistic renderings, subtle ambient occlusion.