Create a sleek and modern cover image for a website specializing in AI virtual assistants. The design should have a sophisticated and minimalistic style, featuring a blend of soothing blues and subtle hints of pink. The colors should transition smoothly to ensure there is enough contrast for text to be clearly readable over the image. Incorporate abstract elements or subtle tech-inspired graphics to represent artificial intelligence and virtual assistance. Use delicate lines to outline the silhouette of an AI agent, blending seamlessly into the background. The overall aesthetic should be elegant and professional, with gentle color transitions to maintain a cohesive look that allows for text overlay.