craft a stunning architectural rendering of a modern two story building with distinct sections of gray and dark brown wood paneling the windows should be expansive and slightly reflective bordered in a sleek black frame capture a rooftop terrace with subtle metallic railings and a minimalist set of outdoor furniture the setting should embody a serene twilight atmosphere with soft ambient lighting casting gentle shadows adding depth and warmth the sky should be a gradient of deep blues and purples evoking a calm evening mood architecture