Create a high-resolution image depicting a futuristic city skyline at dusk. The scene should feature towering skyscrapers with sleek, modern designs, many of which have illuminated windows and vibrant neon signs. Advanced technology is evident throughout, with flying cars zipping between the buildings and holographic advertisements projected onto the sides of structures. The city is built along a waterfront, with a calm river reflecting the myriad of lights and colors. Elevated walkways and parks with lush greenery intersperse the urban landscape, providing a blend of nature and technology. In the foreground, a rooftop garden on one of the buildings offers a panoramic view of the city, with people relaxing and enjoying the view. The sky transitions from a deep blue to shades of purple and pink as the sun sets, creating a stunning backdrop. The overall image should evoke a sense of innovation, modernity, and a harmonious blend of nature and technology.