Create a realistic and visually appealing cover for an online course module titled "Type of Clients in Real Estate" The cover should feature a high-quality, photo-realistic image that subtly represents the theme within the context of the American Mortgage system and showing different types of real estate clients. Different people, ages, etnics. Consider using elements such as a modern real estate office environment with real estate professionals (agents, loan officers) engaged in different work activities, client consultations, or a professional networking event for real estate workers. Use a sophisticated color palette that conveys professionalism and opportunity, focusing on dark blue (Navy Blue), white, and gold. The style should be clean, minimalistic, and slightly futuristic. --ar 16:9  --s 750