Design a futuristic retreat that harmonizes with a serene forest at twilight, blending cutting- edge technology with the natural beauty of the environment. The structure should evoke a sense of tranquility while showcasing advanced materials and sustainable innovations. Building Concept: The retreat should be a sleek, low- rise structure with fluid, organic forms inspired by the natural curves of the forest. Use biomorphic architecture to create a design that mimics the flowing lines of the landscape. The building should appear almost levitating, with sections that cantilever over the forest floor, creating a sense of weightlessness and futuristic elegance. Exterior Design: The exterior should be clad in adaptive smart glass, which changes transparency based on the time of day and the position of the sun. This glass should also display dynamic LED patterns at night, mimicking the twilight sky with shifting hues of pastel pinks, purples, and blues. The roof could feature solar panels integrated into a parametric design, optimizing energy collection while adding a striking visual element. Interior Design: Inside, the retreat should feature modular, reconfigurable spaces that can adapt to different needs and moods. Holographic displays can be used to project scenes of the forest or other natural environments, enhancinthe connection to nature. Furniture should be made from smart materials that adjust to the body for maximum comfort