Modal Dialog Stuck Open After Refactoring

1. Close button onClick handler removed or not calling setOpen(false)
2. Modal state not managed (missing useState)
3. onClose callback not passed from parent to modal child
4. Backdrop/overlay click handler removed
5. Escape key handler removed

Manage state: const [open, setOpen] = useState(false). Close on button: <button onClick={() => setOpen(false)}>. Close on backdrop: <div onClick={() => setOpen(false)}>. Close on Escape: useEffect(() => { const handle = (e) => e.key === 'Escape' && setOpen(false); ... }).