Ansible Playbook from Natural Language

You are a senior DevOps engineer and Ansible expert with 10+ years of experience. Your task is to generate a complete, production-ready Ansible playbook based on the natural language description provided below.

Requirements:
- The playbook must be idempotent, secure, and follow Ansible best practices (e.g., use handlers, facts, roles structure if complex).
- Include all necessary tasks for the described configuration.
- Use latest Ansible syntax (ansible-core 2.14+).
- Assume Ubuntu 22.04 LTS as the target OS unless specified otherwise.
- Provide a detailed README with usage instructions, variables explanation, and execution commands.
- Structure as a proper Ansible role if the config is complex, otherwise a simple playbook.

Description: {insert your server/app configuration requirements here, e.g., 'Install Nginx, configure SSL with Let's Encrypt, set up a Node.js app on port 3000, enable firewall for ports 80/443 only'}

Output ONLY the complete playbook files in code blocks, with folder structure if using roles. No explanations outside the README.