diff --git a/frontend/popout.html b/frontend/popout.html
index b9b6cd6..9a6e907 100644
--- a/frontend/popout.html
+++ b/frontend/popout.html
@@ -14,57 +14,8 @@
       padding: 0;
       height: 100%;
       overflow: hidden;
-      background: #0d1117; /* GitHub-like dark background */
-      color: #e6edf3;
-      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
+      background: var(--bg-primary); 
     }
-    .popout-container {
-      display: flex;
-      flex-direction: column;
-      height: 100vh;
-      border: 1px solid #30363d;
-      box-sizing: border-box;
-    }
-    .popout-header {
-      padding: 12px 20px;
-      background: #161b22;
-      border-bottom: 1px solid #30363d;
-      display: flex;
-      justify-content: space-between;
-      align-items: center;
-      flex-shrink: 0;
-    }
-    .popout-title {
-      font-size: 0.9rem;
-      font-weight: 600;
-      color: #7d8590;
-      white-space: nowrap;
-      overflow: hidden;
-      text-overflow: ellipsis;
-    }
-    .popout-content {
-      flex: 1;
-      padding: 3.5rem 2rem;
-      overflow-y: auto;
-    }
-    .main-wrapper {
-      max-width: 840px;
-      margin: 0 auto;
-      padding: 2.5rem;
-      background: #161b22;
-      border: 1px solid #30363d;
-      border-radius: 12px;
-      box-shadow: 0 12px 48px rgba(0,0,0,0.3);
-    }
-    .markdown-body {
-      line-height: 1.7;
-      color: #e6edf3;
-    }
-    /* Hide default scrollbar but keep functionality */
-    ::-webkit-scrollbar { width: 8px; }
-    ::-webkit-scrollbar-track { background: transparent; }
-    ::-webkit-scrollbar-thumb { background: #30363d; border-radius: 10px; }
-    ::-webkit-scrollbar-thumb:hover { background: #484f58; }
     
     .popout-loading {
       position: absolute;
@@ -72,7 +23,8 @@
       display: flex;
       align-items: center;
       justify-content: center;
-      background: #0d1117;
+      background: var(--bg-primary);
+      color: var(--text-primary);
       z-index: 100;
       transition: opacity 0.3s;
     }
@@ -81,22 +33,15 @@
 <body class="popup-mode">
   <div class="popout-loading" id="loading">Chargement...</div>
   
-  <div class="popout-container">
-    <div class="popout-header">
-      <div class="popout-title" id="file-title">ObsiGate</div>
-      <div style="font-size: 0.75rem; color: #7d8590;" id="vault-name"></div>
-    </div>
-    <div class="popout-content">
-      <div class="main-wrapper">
-        <div id="content-area" class="markdown-body"></div>
-      </div>
-    </div>
+  <div class="main-layout" style="height: 100vh;">
+    <main class="content-area" id="content-area" style="margin-top: 15px;">
+      <!-- JavaScript will inject breadcrumb, title, and markdown content here -->
+    </main>
   </div>
 
   <script>
     async function initPopout() {
       const pathParts = window.location.pathname.split('/');
-      // Expected: /popout/{vault}/{path...}
       const vault = decodeURIComponent(pathParts[2]);
       const path = decodeURIComponent(pathParts.slice(3).join('/'));
 
@@ -105,19 +50,123 @@
         return;
       }
 
-      document.getElementById('vault-name').textContent = vault;
-      document.getElementById('file-title').textContent = path.split('/').pop();
-
       try {
         const response = await fetch(`/api/file/${encodeURIComponent(vault)}?path=${encodeURIComponent(path)}`, {
           credentials: 'include'
         });
-        if (!response.ok) throw new Error("Erreur lors du chargement du fichier");
+        if (!response.ok) throw new Error("Erreur lors du chargement (Essayez de vous reconnecter sur le site principal)");
         
         const data = await response.json();
-        document.getElementById('content-area').innerHTML = data.html;
         document.title = data.title + " - ObsiGate";
         
+        const area = document.getElementById('content-area');
+        area.innerHTML = "";
+
+        // Build breadcrumb (identical structure to app.js)
+        const parts = path.split("/");
+        const breadcrumb = document.createElement("div");
+        breadcrumb.className = "breadcrumb";
+        
+        breadcrumb.appendChild(createBreadcrumbSep());
+        breadcrumb.appendChild(createBreadcrumbItem(vault));
+
+        parts.forEach((part, i) => {
+          breadcrumb.appendChild(createBreadcrumbSep());
+          const name = i === parts.length - 1 ? part.replace(/\.md$/i, "") : part;
+          breadcrumb.appendChild(createBreadcrumbItem(name));
+        });
+        area.appendChild(breadcrumb);
+
+        // Build file header
+        const header = document.createElement("div");
+        header.className = "file-header";
+        const titleDiv = document.createElement("div");
+        titleDiv.className = "file-title";
+        titleDiv.textContent = data.title;
+        header.appendChild(titleDiv);
+        
+        // Tags
+        if (data.tags && data.tags.length > 0) {
+          const tagsDiv = document.createElement("div");
+          tagsDiv.className = "file-tags";
+          data.tags.forEach(t => {
+            const span = document.createElement("span");
+            span.className = "file-tag";
+            span.textContent = "#" + t;
+            tagsDiv.appendChild(span);
+          });
+          header.appendChild(tagsDiv);
+        }
+
+        // Action buttons
+        const actionsDiv = document.createElement("div");
+        actionsDiv.className = "file-actions";
+        
+        const copyBtn = document.createElement("button");
+        copyBtn.className = "btn-action";
+        copyBtn.title = "Copier la source";
+        copyBtn.innerHTML = '<i data-lucide="copy" style="width:14px;height:14px"></i> Copier';
+        copyBtn.addEventListener("click", async () => {
+          try {
+            const rawUrl = `/api/file/${encodeURIComponent(vault)}/raw?path=${encodeURIComponent(path)}`;
+            const rawData = await (await fetch(rawUrl, {credentials: 'include'})).json();
+            await navigator.clipboard.writeText(rawData.raw);
+            copyBtn.textContent = "Copié !";
+            setTimeout(() => (copyBtn.innerHTML = '<i data-lucide="copy" style="width:14px;height:14px"></i> Copier'), 1500);
+            if (window.lucide) window.lucide.createIcons();
+          } catch (e) {}
+        });
+        actionsDiv.appendChild(copyBtn);
+
+        const dlBtn = document.createElement("button");
+        dlBtn.className = "btn-action";
+        dlBtn.title = "Télécharger";
+        dlBtn.innerHTML = '<i data-lucide="download" style="width:14px;height:14px"></i> Télécharger';
+        dlBtn.addEventListener("click", () => {
+          const a = document.createElement("a");
+          a.href = `/api/file/${encodeURIComponent(vault)}/download?path=${encodeURIComponent(path)}`;
+          a.download = path.split('/').pop();
+          document.body.appendChild(a);
+          a.click();
+          document.body.removeChild(a);
+        });
+        actionsDiv.appendChild(dlBtn);
+        
+        header.appendChild(actionsDiv);
+        area.appendChild(header);
+
+        // Frontmatter
+        if (data.frontmatter && Object.keys(data.frontmatter).length > 0) {
+          const fmSection = document.createElement("div");
+          const fmToggle = document.createElement("div");
+          fmToggle.className = "frontmatter-toggle";
+          fmToggle.textContent = "▶ Frontmatter";
+          const fmContent = document.createElement("div");
+          fmContent.className = "frontmatter-content";
+          fmContent.textContent = JSON.stringify(data.frontmatter, null, 2);
+          
+          fmToggle.addEventListener("click", () => {
+            fmContent.classList.toggle("open");
+            fmToggle.textContent = fmContent.classList.contains("open") ? "▼ Frontmatter" : "▶ Frontmatter";
+          });
+          
+          fmSection.appendChild(fmToggle);
+          fmSection.appendChild(fmContent);
+          area.appendChild(fmSection);
+        }
+
+        // Markdown content wrapper
+        const mdDiv = document.createElement("div");
+        mdDiv.className = "md-content";
+        mdDiv.id = "file-rendered-content";
+        mdDiv.innerHTML = data.html;
+        area.appendChild(mdDiv);
+
+        // Render lucide icons
+        if (window.lucide) {
+          window.lucide.createIcons();
+        }
+
         // Highlight code blocks
         document.querySelectorAll('pre code').forEach((el) => {
           hljs.highlightElement(el);
@@ -134,6 +183,20 @@
       }
     }
 
+    function createBreadcrumbSep() {
+      const sep = document.createElement("span");
+      sep.className = "sep";
+      sep.textContent = " / ";
+      return sep;
+    }
+
+    function createBreadcrumbItem(text) {
+      const item = document.createElement("span");
+      item.className = "breadcrumb-item";
+      item.textContent = text;
+      return item;
+    }
+
     window.onload = initPopout;
   </script>
 </body>
