A contemporary underground pool house at sunrise, massive light well casting dramatic volumetric rays through floor-to-ceiling glass walls, sleek black slate lap pool with reflecting surface, pale limestone walls with hand-painted watercolor texture and visible brushstrokes, single sculptural Japanese maple in weathered copper planter, minimal teak loungers with cream linen cushions, brass water feature with gentle cascade, frame-by-frame animation aesthetics, warm honey and soft sage palette, Blender Cycles cinematic render with gouache background, paper grain texture, global illumination creating ethereal morning atmosphere, architectural digest quality composition, contemplative wellness sanctuary mood at first light in minimalist subterranean retreat