"Design a futuristic building shaped like a Christmas tree, featuring stepped, glass-enclosed terraces. The terraces should be lush with greenery, including plants, vegetation, and small trees, creating a vertical garden effect. The structure is illuminated with vibrant, multicolored lights, giving it a festive and high-tech aesthetic. At the base, include a large reflecting pool that mirrors the entire structure, enhancing its visual impact. Surround the building with a natural setting of trees, and include a backdrop of mountains to emphasize the harmony between advanced architectural design and nature."