New features:
- Create reusable Modal component with animations
- Add useModal hook for common modal behaviors
- Add useClickOutside hook for backdrop clicks
- Implement ESC key handling for all modals
- Add focus trap to prevent focus escaping modals
- Add body scroll locking when modals are open
- Add fullscreen toggle option for modals
- Add fade-in/scale animations for smooth transitions
Modal improvements:
- Upload modal: converted to use new Modal component
- Document details modal: converted to use new Modal component
- Create folder modal: converted to use new Modal component
- Acknowledgements report: enhanced with modal hooks
Technical details:
- Modal sizes: sm, md, lg, xl, full
- Configurable close behavior (ESC, click outside, close button)
- Automatic scrollbar width compensation
- Focus restoration after modal close
- Accessible with ARIA attributes and keyboard navigation
