- Make sidebar re-openable after closing.
- Adjust dark mode to pure black background with white text.
- Replace emojis with React icons.
- Add a left-side navbar with suggested questions and a website link.
Create a minimal, high-end landing page with a chatbot-like interface, including dark/light mode, prewritten prompts, and animated sidebar. Design should be black and white with glassmorphism and subtle gradients.