Create the design for a modern, functional, and cozy youth bedroom. Use a combination of wood in a natural finish, such as Merida oak, and contrasting colors like deep blue for decorative or storage elements. Include a custom headboard with open and closed storage spaces, allowing for organization and display of personal items. Incorporate warm lighting and an ambiance that combines comfort and youthful style, with an emphasis on an efficient space layout to maximize functionality while maintaining an aesthetic and contemporary design.