Design a modern and sustainable architectural structure that features facades made of glass and reinforced concrete, complemented by warm wooden elements. The design should focus on energy efficiency and environmental sustainability, incorporating features such as natural ventilation, solar panels, and rainwater harvesting systems. Create an open floor plan that promotes natural light and outdoor connectivity. The use of wood should be integrated into the design to enhance aesthetic warmth and sustainability. Please provide design sketches, elevation views, and a description of the sustainable features included