Add generic modal

components/ui/modal/Modal.css

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+/* Modal Overlay */
+.modal-overlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background-color: rgba(0, 0, 0, 0.5);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+  padding: 1rem;
+}
+
+/* Modal Container */
+.modal-container {
+  background: white;
+  border-radius: 0.75rem;
+  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
+  max-height: 90vh;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+}
+
+.modal-sm {
+  max-width: 28rem;
+}
+
+.modal-md {
+  max-width: 32rem;
+}
+
+.modal-lg {
+  max-width: 48rem;
+}
+
+.modal-xl {
+  max-width: 64rem;
+}
+
+/* Modal Header */
+.modal-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 1.5rem;
+  border-bottom: 1px solid #e5e7eb;
+  background: #f9fafb;
+}
+
+.modal-title {
+  font-size: 1.25rem;
+  font-weight: 600;
+  color: #111827;
+  margin: 0;
+}
+
+.modal-close-button {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 2rem;
+  height: 2rem;
+  border: none;
+  background: none;
+  border-radius: 0.375rem;
+  color: #6b7280;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.modal-close-button:hover {
+  background-color: #f3f4f6;
+  color: #374151;
+}
+
+/* Modal Content */
+.modal-content {
+  flex: 1;
+  overflow-y: auto;
+  padding: 0;
+}
+
+/* Responsive */
+@media (max-width: 640px) {
+  .modal-overlay {
+    padding: 0.5rem;
+  }
+  
+  .modal-container {
+    max-height: 95vh;
+  }
+  
+  .modal-header {
+    padding: 1rem;
+  }
+  
+  .modal-title {
+    font-size: 1.125rem;
+  }
+}

components/ui/modal/Modal.tsx

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+import React from 'react';
+import { X } from 'lucide-react';
+import './Modal.css';
+
+interface ModalProps {
+  isOpen: boolean;
+  onClose: () => void;
+  title: string;
+  children: React.ReactNode;
+  size?: 'sm' | 'md' | 'lg' | 'xl';
+}
+
+const Modal: React.FC<ModalProps> = ({ 
+  isOpen, 
+  onClose, 
+  title, 
+  children, 
+  size = 'md' 
+}) => {
+  if (!isOpen) return null;
+
+  const handleBackdropClick = (e: React.MouseEvent) => {
+    if (e.target === e.currentTarget) {
+      onClose();
+    }
+  };
+
+  return (
+    <div className="modal-overlay" onClick={handleBackdropClick}>
+      <div className={`modal-container modal-${size}`}>
+        <div className="modal-header">
+          <h2 className="modal-title">{title}</h2>
+          <button
+            className="modal-close-button"
+            onClick={onClose}
+            aria-label="Fermer la modal"
+          >
+            <X className="h-5 w-5" />
+          </button>
+        </div>
+        <div className="modal-content">
+          {children}
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default Modal;