Generate a high-quality, atmospheric image of a pretty cat peacefully sleeping on moss-covered stone steps situated on a hill overlooking a vast, vibrant metropolis nestled in a valley by the waterfront. The cat is curled up cozily, with soft fur gently ruffled by a warm nighttime breeze. The scene is set on a beautiful, calm night, with the lights of the city and its harbor sparkling in the background. Colorful lights from buildings and boats reflect on the water, casting a magical glow across the valley. The atmosphere is tranquil, with the gentle city lights adding a warm, ambient contrast to the quiet hillside. Capture the detail of the sleeping cat’s delicate fur, the texture of the stone steps, and the picturesque view of the cityscape below, with a sense of peace and beauty filling the scene.