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src/components/ui/Modal.tsx

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+'use client'
+
+import { ReactNode, useEffect, useId, useRef, useState } from 'react'
+import { createPortal } from 'react-dom'
+import { X } from 'lucide-react'
+import { cn } from '@/lib/utils'
+
+interface ModalProps {
+  open: boolean
+  onClose: () => void
+  title?: string
+  description?: string
+  children?: ReactNode
+  className?: string
+}
+
+export default function Modal({
+  open,
+  onClose,
+  title,
+  description,
+  children,
+  className
+}: ModalProps) {
+  const [mounted, setMounted] = useState(false)
+  const closeButtonRef = useRef<HTMLButtonElement>(null)
+  const titleId = useId()
+  const descriptionId = useId()
+
+  useEffect(() => {
+    setMounted(true)
+  }, [])
+
+  useEffect(() => {
+    if (!open) return
+
+    const previousOverflow = document.body.style.overflow
+    document.body.style.overflow = 'hidden'
+
+    const handleKeyDown = (event: KeyboardEvent) => {
+      if (event.key === 'Escape') {
+        onClose()
+      }
+    }
+
+    document.addEventListener('keydown', handleKeyDown)
+    return () => {
+      document.body.style.overflow = previousOverflow
+      document.removeEventListener('keydown', handleKeyDown)
+    }
+  }, [open, onClose])
+
+  useEffect(() => {
+    if (open) {
+      closeButtonRef.current?.focus()
+    }
+  }, [open])
+
+  if (!mounted || !open) {
+    return null
+  }
+
+  return createPortal(
+    <div
+      className='fixed inset-0 z-50 flex items-center justify-center bg-background/80 p-4 backdrop-blur-sm'
+      onMouseDown={(event) => {
+        if (event.target === event.currentTarget) {
+          onClose()
+        }
+      }}
+    >
+      <div
+        role='dialog'
+        aria-modal={true}
+        aria-label={title ? undefined : 'Modal'}
+        aria-labelledby={title ? titleId : undefined}
+        aria-describedby={description ? descriptionId : undefined}
+        className={cn('bg-card border border-border rounded-lg shadow-xl w-full max-w-lg', className)}
+      >
+        <div className='flex items-start justify-between gap-4 p-6 pb-4'>
+          {title ? (
+            <div>
+              <h2 id={titleId} className='text-xl font-semibold text-foreground'>
+                {title}
+              </h2>
+              {description ? (
+                <p id={descriptionId} className='mt-1 text-sm text-muted-foreground'>{description}</p>
+              ) : null}
+            </div>
+          ) : (
+            <span />
+          )}
+          <button
+            ref={closeButtonRef}
+            type='button'
+            onClick={onClose}
+            aria-label='Close modal'
+            className='ml-auto inline-flex h-8 w-8 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-accent hover:text-accent-foreground focus:outline-none focus:ring-2 focus:ring-primary focus:ring-offset-2'
+          >
+            <X className='h-4 w-4' />
+          </button>
+        </div>
+        <div className='px-6 pb-6'>{children}</div>
+      </div>
+    </div>,
+    document.body
+  )
+}