Futuristic eco-friendly nano house, 25 square meters, off-grid modular design, seamless integration with nature, solar panels, rainwater harvesting system, smart glass windows, vertical gardens, biophilic interior, minimalistic yet high-tech aesthetic, wood and recycled composite materials, soft natural lighting, cozy and highly functional living space, panoramic view, compact yet luxurious, innovative space-saving solutions, tranquil and sustainable environment, ultra-modern eco-home