phsl / new-api

- Replace all inline style objects with TailwindCSS utility classes
- Convert Layout and Layout.Sider component styles to responsive classes
- Simplify conditional styling logic using template literals
- Maintain existing responsive design and functionality
- Improve code readability and maintainability

Changes include:
- Layout: height/background styles → h-full bg-transparent
- Sider: complex style object → conditional className with mobile/desktop variants
- Debug panel overlay: inline styles → utility classes (fixed, z-[1000], etc.)
- Remove redundant style props while preserving visual consistency