diff --git a/Projet/src/main/java/projet/AfficherPage.java b/Projet/src/main/java/projet/AfficherPage.java
index 1b426de..cb19d9a 100644
--- a/Projet/src/main/java/projet/AfficherPage.java
+++ b/Projet/src/main/java/projet/AfficherPage.java
@@ -10,6 +10,7 @@ import jakarta.servlet.http.HttpSession;
 
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.List;
 import java.util.Map;
 
 @WebServlet("/AfficherPage")
@@ -35,6 +36,10 @@ public class AfficherPage extends HttpServlet {
 			request.setAttribute("listeMessages", listeMessages);
 			request.setAttribute("listeUtilisateurs", listeUtilisateurs);
 			
+			String menuHtml = genererMenuHTML(u.getId());
+			request.setAttribute("menuHtml", menuHtml);
+			
+			
 			if (idStr != null ) {
 				try {
 					int id = Integer.parseInt(idStr);
@@ -66,5 +71,42 @@ public class AfficherPage extends HttpServlet {
 
 	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 	}
+	
+	public static String genererMenuHTML(int idU) {
+	    Map<Integer, List<Page>> arbre = Page.getArbreDesPages(idU);    
+	    StringBuilder html = new StringBuilder();
+	    html.append("<ul>\n");
+	    construireHTMLRecursif(arbre, -1, html, 6);
+	    html.append("					</ul>\n");
+	    return html.toString();
+	}
+	
+	private static void construireHTMLRecursif(Map<Integer, List<Page>> arbre, int parentId, StringBuilder html, int indentLevel) {
+	    List<Page> enfants = arbre.get(parentId);
+	    if (enfants == null || enfants.isEmpty()) return;
 
+	    String indent = "\t".repeat(indentLevel);
+
+	    for (Page p : enfants) {
+	        List<Page> sousPages = arbre.get(p.getId());
+	        boolean aSousPages = sousPages != null && !sousPages.isEmpty();
+
+	        html.append(indent).append("<li>\n");
+
+	        html.append(indent).append("\t<div class='is-flex is-align-items-center is-justify-content-space-between'>\n");
+	        html.append(indent).append("\t\t<a href='AfficherPage?id=").append(p.getId()).append("'>")
+	            .append(p.getTitre()).append("</a>\n");
+	        html.append(indent).append("\t\t<button class='delete delete-page-btn has-background-danger ml-2' data-id='")
+	            .append(p.getId()).append("'></button>\n");
+	        html.append(indent).append("\t</div>\n");
+
+	        if (aSousPages) {
+	            html.append(indent).append("\t<ul class='ml-4'>\n");
+	            construireHTMLRecursif(arbre, p.getId(), html, indentLevel + 1);
+	            html.append(indent).append("\t</ul>\n");
+	        }
+
+	        html.append(indent).append("</li>\n");
+	    }
+	}
 }
diff --git a/Projet/src/main/java/projet/Page.java b/Projet/src/main/java/projet/Page.java
index bdf61fa..47d6480 100644
--- a/Projet/src/main/java/projet/Page.java
+++ b/Projet/src/main/java/projet/Page.java
@@ -9,7 +9,9 @@ import java.sql.Statement;
 import java.time.LocalDate;
 import java.sql.Date;
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 import projet.Bloc.Type;
 
@@ -283,4 +285,57 @@ public class Page extends ParamBD {
 	        e.printStackTrace();
 	    }
 	}
+	
+	public static Map<Integer, List<Page>> getArbreDesPages(int idU) {
+	    Map<Integer, List<Page>> arbre = new HashMap<>();
+	    chargerSousPagesRecursivement(idU, arbre, null);
+	    return arbre;
+	}
+	
+	public static void chargerSousPagesRecursivement(int idU, Map<Integer, List<Page>> arbre, Integer idParent) {
+		List<Page> enfants = new ArrayList<>();
+		
+		try {
+		    Connection connexion = DriverManager.getConnection(bdURL, bdLogin, bdPassword);
+		    String sql;
+	        PreparedStatement pst;
+	        
+		    if(idParent == null) {
+			    sql = " SELECT id, titre"
+			    		+ " FROM page "
+			    		+ "WHERE auteur_id = ? AND page_parent_id IS NULL"
+			    		+ ";";
+			    pst = connexion.prepareStatement(sql);
+			    pst.setInt(1, idU);
+		    } else {
+			    sql = " SELECT id, titre"
+			    		+ " FROM page "
+			    		+ "WHERE auteur_id = ? AND page_parent_id = ?"
+			    		+ ";";
+			    pst = connexion.prepareStatement(sql);
+			    pst.setInt(1, idU);
+		        pst.setInt(2, idParent);		    	
+		    }
+	        
+	        ResultSet rs = pst.executeQuery();	        
+	        while (rs.next()) {
+	            int id = rs.getInt("id");
+	            String titre = rs.getString("titre");
+	            Page page = new Page(id, idU, titre);
+	            enfants.add(page);
+	        }
+	        
+	        rs.close();
+	        connexion.close();
+	    } catch (SQLException e) {
+	        e.printStackTrace();
+	    }
+		
+		int key = (idParent == null) ? -1 : idParent;
+		arbre.put(key, enfants);
+		
+	    for (Page enfant : enfants) {
+	        chargerSousPagesRecursivement(idU, arbre, enfant.getId());
+	    }
+	}
 }
diff --git a/Projet/src/main/webapp/WEB-INF/AfficherPage.jsp b/Projet/src/main/webapp/WEB-INF/AfficherPage.jsp
index 1782bbb..917b41f 100644
--- a/Projet/src/main/webapp/WEB-INF/AfficherPage.jsp
+++ b/Projet/src/main/webapp/WEB-INF/AfficherPage.jsp
@@ -7,15 +7,15 @@
 </jsp:include>
 
 
-		<div class="columns">
+		<div class="columns is-flex" style="transition: all 0.3s ease;">
 		
 		  <!-- La colonne pour le menu des pages -->
-		  <div class="column is-one-fifth">
+		  <div class="column is-one-fifth" id="menuColumn">
 			<jsp:include page="MenuPages.jsp" />
 		  </div>
 		  
 		  <!-- La colonne pour la page choisie -->
-		  <div class="column is-half">
+		  <div class="column flex-main" id="mainColumn">
 		  <c:choose>
 			  <c:when test="${not empty page.titre}">
 			  	<div class="is-flex is-justify-content-space-between is-align-items mb-4">
@@ -53,7 +53,7 @@
 						      </span>
 						    </button>
 						  </div>
-						  <div class="dropdown-menu" id="dropdown-menu3" role="menu">
+						  <div class="dropdown-menu" id="dropdown-menu4" role="menu">
 						    <div class="dropdown-content">
 						      <c:forEach var="u" items="${listeUtilisateurs}">
 						          <c:if test="${u.id != utilisateur.id}">
@@ -67,7 +67,7 @@
 				</div>
 			  	<div class="block" id="md">
 					<c:forEach var="bloc" items="${page.listeBlocs}">
-					  <div class="field is-grouped is-align-items-flex-start bloc-container" draggable="true">
+					  <div class="field is-grouped is-align-items-flex-start bloc-container hover-bloc" draggable="true">
 					    <div class="control is-expanded">
 					      <div
 					        class="is-primary editor"
@@ -139,6 +139,7 @@
 				          <li><code>`texte`</code> → <code>&lt;code&gt;</code> : monospaced/code</li>
 				          <li><code>**gras**</code> → <strong>gras</strong></li>
 				          <li><code>*italique*</code> → <em>italique</em></li>
+				          <li><code>$math$</code> → active le rendu mathématique en ligne (MathJax)</li>
 				          <li><code>$$math$$ </code> → active le rendu mathématique (MathJax)</li>
 				        </ul>
 				      </div>
@@ -174,10 +175,10 @@
 		  </div>
 		  
 		  <!-- La colonne pour le Tchat -->
-		  <div class="column is-one-quarter">
+		  <div class="column flex-tchat slide-out" id="tchatColumn">
 			<jsp:include page="Tchat.jsp" />
 		  </div>
 		</div>
-
+		<button class="button is-small is-info vertical-toggle" id="toggleTchatBtn">Afficher / Cacher le Tchat</button>
 <jsp:include page="Footer.jsp" />
 
diff --git a/Projet/src/main/webapp/WEB-INF/Header.jsp b/Projet/src/main/webapp/WEB-INF/Header.jsp
index 4c0a9ff..1f77372 100644
--- a/Projet/src/main/webapp/WEB-INF/Header.jsp
+++ b/Projet/src/main/webapp/WEB-INF/Header.jsp
@@ -8,15 +8,23 @@
 	<link href="bulma.css" rel="stylesheet">
 	<link rel="stylesheet" href="styles.css">
 	<script src="https://kit.fontawesome.com/39474be7e2.js" crossorigin="anonymous"></script>
-	<script type="text/javascript" async
-	  src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js">
+	<script>
+	  window.MathJax = {
+	    tex: {
+	      inlineMath: [['$', '$'], ['\\(', '\\)']]
+	    },
+	    svg: {
+	      fontCache: 'global'
+	    }
+	  };
 	</script>
+	<script async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </head>
 <body>
 	<nav class="navbar has-shadow is-white" aria-label="main navigation">
 		<div class="navbar-brand">
 			<a class="navbar-item" href="/Projet/">
-				<h1 class="title is-2">Prise de notes collaborative</h1>
+				<h1 class="title is-2 has-text-success">Prise de notes collaborative</h1>
 			</a>
 		</div>
 		<div class="navbar-menu">
diff --git a/Projet/src/main/webapp/WEB-INF/MenuPages.jsp b/Projet/src/main/webapp/WEB-INF/MenuPages.jsp
index ad90904..accf8f8 100644
--- a/Projet/src/main/webapp/WEB-INF/MenuPages.jsp
+++ b/Projet/src/main/webapp/WEB-INF/MenuPages.jsp
@@ -4,15 +4,9 @@
 
 		  	<h2 class="block">Menu des pages</h2>
 		  	<aside class="menu">
-				<ul class="menu-list" id="menuPages">
-				    <c:forEach var="page" items="${listePages}">
-				      <li>
-				      	<button class="delete delete-page-btn is-pulled-right has-background-danger" data-id="${page.id}"></button>
-				      	<a href="AfficherPage?id=${page.id}">${page.titre}</a>
-				      	
-				      </li>
-				    </c:forEach>
-				</ul>
+				<div>
+					${menuHtml}
+				</div>
 				    <hr>
 				<ul class="menu-list">
 				    <c:forEach var="pagePartagees" items="${listePagesPartagees}">
@@ -34,4 +28,4 @@
 						</form>
 				  	</li>
 				</ul>
-			</aside>	
\ No newline at end of file
+			</aside>
\ No newline at end of file
diff --git a/Projet/src/main/webapp/js/bloc.js b/Projet/src/main/webapp/js/bloc.js
index 4715902..ad7c799 100644
--- a/Projet/src/main/webapp/js/bloc.js
+++ b/Projet/src/main/webapp/js/bloc.js
@@ -20,13 +20,19 @@ export function initBlocs() {
 		});
 	});
 
-	document.querySelectorAll('.delete-bloc-btn').forEach(t => {
-		addDeleteBloc(t);
+	document.querySelectorAll('.delete-bloc-btn').forEach(btn => {
+		addDeleteBloc(btn);
+		btn.addEventListener('mouseenter', () => {
+		  btn.closest('.hover-bloc').classList.add('hovered');
+		});
+		btn.addEventListener('mouseleave', () => {
+		  btn.closest('.hover-bloc').classList.remove('hovered');
+		});
 	});
 	
 	formatEditorContent();
 	
-	document.querySelectorAll('#md [contenteditable="true"]').forEach(bloc => {
+	document.querySelectorAll('#md ').forEach(bloc => {
 		autoResize(bloc);
 	});
 	
@@ -169,9 +175,9 @@ export function addDeleteBloc(button) {
 	button.addEventListener('click', function() {
 		const blocId = button.dataset.id;
 		const blocContainer = button.closest('.bloc-container');
-		const bloc = blocContainer.querySelector('[contenteditable="true"]');
+		const bloc = blocContainer.querySelector('.editor');
 
-		if (bloc.dataset.type != "SEPARATEUR" && bloc.innerText === "") {
+		if (bloc.dataset.type != "SEPARATEUR" && bloc.innerText.trim() === "") {
 			return;
 		}
 
@@ -203,7 +209,10 @@ export function addDeleteBloc(button) {
 }
 
 export function ajouterBlocVideSiBesoin() {
-	const allBlocs = document.querySelectorAll('#md [contenteditable="true"]');
+	const container = document.querySelector('#md');
+	if (!container) return;
+	const allBlocs = container.querySelectorAll('.editor');
+
 	const pageId = new URLSearchParams(window.location.search).get("id");
 	if (pageId === null) return;
 
@@ -212,7 +221,7 @@ export function ajouterBlocVideSiBesoin() {
 		return;
 	}
 
-	if (allBlocs.length === 0 || allBlocs[allBlocs.length - 1].innerText.trim() !== "") {
+	if (allBlocs.length === 0 || allBlocs[allBlocs.length - 1].innerText.trim() !== "" || allBlocs[allBlocs.length - 1].dataset.type === "SEPARATEUR") {
 		const params = new URLSearchParams();
 		params.append("contenu", "");  // Bloc vide
 		params.append("type", "TEXTE"); // Type par défaut : TEXTE
@@ -227,30 +236,30 @@ export function ajouterBlocVideSiBesoin() {
 			},
 			body: params.toString()
 		}).then(response => response.json())
-			.then(data => {
-				if (data && data.idGenere) {
-					const idGenere = data.idGenere;
-					const newBloc = creerBlocDOM({
-						blocId: idGenere,
-						content: "",
-						type: "TEXTE",
-						metadata: "{}",
-						ordre: allBlocs.length
-					});
-					
-					newBloc.focus();
-					
-					// Envoi d'une notification d'un nouveau bloc créé via websocket
-					window.socketBloc.send(JSON.stringify({
-						action: "newBloc",
-						blocId: idGenere,
-						content: "",
-						type: "TEXTE",
-						metadata: "{}",
-						ordre: allBlocs.length
-					}));					
-				}
-			});
+		.then(data => {
+			if (data && data.idGenere) {
+				const idGenere = data.idGenere;
+				const newBloc = creerBlocDOM({
+					blocId: idGenere,
+					content: "",
+					type: "TEXTE",
+					metadata: "{}",
+					ordre: allBlocs.length
+				});
+				
+				newBloc.focus();
+				
+				// Envoi d'une notification d'un nouveau bloc créé via websocket
+				window.socketBloc.send(JSON.stringify({
+					action: "newBloc",
+					blocId: idGenere,
+					content: "",
+					type: "TEXTE",
+					metadata: "{}",
+					ordre: allBlocs.length
+				}));					
+			}
+		});
 	}
 }
 
diff --git a/Projet/src/main/webapp/js/functionsBloc.js b/Projet/src/main/webapp/js/functionsBloc.js
index fbe1c90..645f7e3 100644
--- a/Projet/src/main/webapp/js/functionsBloc.js
+++ b/Projet/src/main/webapp/js/functionsBloc.js
@@ -73,6 +73,7 @@ export function renderBlocStyle(bloc) {
         case 'PAGE':
 			renderPage(bloc);
             bloc.classList.add('is-page-link');
+			bloc.contentEditable = "false";
             break;
 
         case 'SEPARATEUR':
@@ -183,7 +184,7 @@ export function handleSlashCommand(bloc, texte) {
 
             case "hr":
                 applyBlocType(bloc, "SEPARATEUR", {}); // ou un type adapté selon ta logique
-                bloc.innerText = ' ';
+                bloc.textContent = '';
                 autoResize(bloc);
                 resolve();
                 break;
diff --git a/Projet/src/main/webapp/js/main.js b/Projet/src/main/webapp/js/main.js
index 07fb2ad..91c5a2a 100644
--- a/Projet/src/main/webapp/js/main.js
+++ b/Projet/src/main/webapp/js/main.js
@@ -1,5 +1,5 @@
 import { initBlocs, ajouterBlocVideSiBesoin, focusDernierBloc } from './bloc.js';
-import { initTchat } from './tchat.js';
+import { initTchat, toggleTchat } from './tchat.js';
 import { initPages } from './page.js';
 import { initSocketBloc } from './socket-bloc.js';
 import { initDragAndDrop } from './drag-and-drop.js';
@@ -22,4 +22,23 @@ window.addEventListener('DOMContentLoaded', () => {
 	        window.location.href = url;  // Rediriger manuellement
 	    }
 	});
+	
+  document.querySelectorAll('.item-header .toggle').forEach(toggle => {
+    toggle.addEventListener('click', function (e) {
+      // Empêche le lien de se propager si cliqué
+      e.stopPropagation();
+
+      const li = this.closest('li');
+      const sublist = li.querySelector('ul');
+
+      if (sublist) {
+        sublist.classList.toggle('hidden');
+        this.classList.toggle('rotated');
+      }
+    });
+  });
+  
+  document.getElementById('toggleTchatBtn').addEventListener('click', toggleTchat);
 });
+
+
diff --git a/Projet/src/main/webapp/js/tchat.js b/Projet/src/main/webapp/js/tchat.js
index 3f11b8f..046de89 100644
--- a/Projet/src/main/webapp/js/tchat.js
+++ b/Projet/src/main/webapp/js/tchat.js
@@ -22,3 +22,22 @@ export function initTchat() {
         });
     }
 }
+
+export function toggleTchat() {
+  const tchat = document.getElementById('tchatColumn');
+  const main = document.getElementById('mainColumn');
+  
+  if (tchat.classList.contains('slide-in')) {
+    tchat.classList.remove('slide-in');
+    tchat.classList.add('slide-out');
+	
+	main.classList.remove('collapsed');
+	main.classList.add('expanded');
+  } else {
+    tchat.classList.remove('slide-out');
+    tchat.classList.add('slide-in');
+	
+	main.classList.remove('expanded');
+	main.classList.add('collapsed');
+  }
+}
diff --git a/Projet/src/main/webapp/styles.css b/Projet/src/main/webapp/styles.css
index edb0c4f..6e10d52 100644
--- a/Projet/src/main/webapp/styles.css
+++ b/Projet/src/main/webapp/styles.css
@@ -93,3 +93,45 @@
 .dragging {
   opacity: 0.5;
 }
+
+/* Animation pour glisser la colonne vers la droite */
+.slide-out {
+  transform: translateX(100%);
+  opacity: 0;
+  transition: transform 0.3s ease, opacity 0.3s ease;
+}
+
+/* Animation pour la faire apparaître */
+.slide-in {
+  transform: translateX(0%);
+  opacity: 1;
+  transition: transform 0.3s ease, opacity 0.3s ease;
+}
+
+.flex-main {
+  flex-grow: 4;
+  transition: flex-grow 0.3s ease;
+}
+
+.expanded {
+  flex-grow: 4;
+}
+
+.collapsed {
+  flex-grow: 2;
+}
+
+.vertical-toggle {
+  position: fixed;
+  top: 50%;
+  right: 0;
+  transform: rotate(-90deg) translateY(-50%);
+  transform-origin: right center;
+  z-index: 999;
+  border-radius: 6px 6px 0 0;
+}
+
+.hover-bloc.hovered {
+  background-color: #ffe6e6;
+  transition: background-color 0.2s ease;
+}
\ No newline at end of file