Act as a visionary architect with 20 years of experience in designing sustainable, futuristic cities. Generate a highly detailed MidJourney image of a utopian metropolis in the year [2150], where [biophilic skyscrapers] seamlessly blend with [floating green parks] and [holographic transit networks]. The scene should showcase [neon-lit glass towers] with vertical gardens, [solar-paneled walkways] suspended in mid-air, and [AI-driven drone taxis] gliding between structures. Use a vibrant color palette of [electric blues], [luminous greens], and [metallic golds] to emphasize the harmony between technology and nature. Include subtle details like [transparent energy shields] protecting the city from extreme weather and [citizens in sleek, eco-friendly attire] enjoying the urban oasis. The composition should evoke awe and hope for a sustainable future.