diff --git a/src/server/public/assets/js/dashboard_items.js b/src/server/public/assets/js/dashboard_items.js
index 3fac785..74a6dc9 100644
--- a/src/server/public/assets/js/dashboard_items.js
+++ b/src/server/public/assets/js/dashboard_items.js
@@ -48,10 +48,10 @@
 
   async function onDelete(e){ const id = e.currentTarget && e.currentTarget.dataset ? e.currentTarget.dataset.id : null; if(!id) return; if(!confirm('Eliminar item?')) return; try{ const res = await fetch('/api/dashboard/' + encodeURIComponent(guildId) + '/items/' + encodeURIComponent(id), { method:'DELETE' }); if(!res.ok) throw new Error('delete-failed'); await fetchItems(); alert('Item eliminado'); }catch(err){ alert('Error al eliminar'); } }
 
-  function onEdit(e){ const id = e.currentTarget && e.currentTarget.dataset ? e.currentTarget.dataset.id : null; if(!id) return; window.location.href = '/dashboard/' + encodeURIComponent(guildId) + '/items/lab?edit=' + encodeURIComponent(id); }
+  function onEdit(e){ const id = e.currentTarget && e.currentTarget.dataset ? e.currentTarget.dataset.id : null; if(!id) return; window.location.href = '/items/lab?guild=' + encodeURIComponent(guildId) + '&edit=' + encodeURIComponent(id); }
 
   // wire create button (if present) to navigate to lab
-  const createBtn = $('createItemBtn'); if(createBtn) createBtn.addEventListener('click', ()=>{ window.location.href = '/dashboard/' + encodeURIComponent(guildId) + '/items/lab'; });
+  const createBtn = $('createItemBtn'); if(createBtn) createBtn.addEventListener('click', (ev)=>{ ev.preventDefault(); window.location.href = '/items/lab?guild=' + encodeURIComponent(guildId); });
 
   // initial load
   fetchItems();
diff --git a/src/server/public/assets/js/item_lab.js b/src/server/public/assets/js/item_lab.js
index be100df..ff2c71d 100644
--- a/src/server/public/assets/js/item_lab.js
+++ b/src/server/public/assets/js/item_lab.js
@@ -1,6 +1,14 @@
 (function(){
   const $ = id => document.getElementById(id);
-  const guildId = (() => { try{ return (document.getElementById('itemsRoot') && document.getElementById('itemsRoot').dataset && document.getElementById('itemsRoot').dataset.guildId) || ''; }catch(e){ return ''; } })();
+  // Detect guildId from itemsRoot dataset when embedded, otherwise read ?guild= from query string when opened as standalone page
+  const guildId = (() => {
+    try{
+      const root = document.getElementById('itemsRoot');
+      if(root && root.dataset && root.dataset.guildId) return root.dataset.guildId;
+      const p = new URLSearchParams(location.search || '');
+      return p.get('guild') || '';
+    }catch(e){ return ''; }
+  })();
 
   // form elements
   const form = $('itemLabForm');
@@ -54,6 +62,34 @@
     labReset.addEventListener('click', resetForm);
   }
 
+  // Prefill when editing: detect ?edit=<id>
+  (async function tryPrefill(){
+    try{
+      const params = new URLSearchParams(location.search || '');
+      const editId = params.get('edit');
+      if(!editId) return;
+      // show temporary loading state
+      const prev = labPreview.textContent;
+      labPreview.textContent = 'Cargando item...';
+      const res = await fetch('/api/dashboard/' + encodeURIComponent(guildId) + '/items/' + encodeURIComponent(editId));
+      if(!res.ok){ labPreview.textContent = 'Error cargando item: HTTP ' + res.status; return; }
+      const j = await res.json();
+      if(!j || !j.ok || !j.item){ labPreview.textContent = 'Item no encontrado'; return; }
+      const item = j.item;
+      // populate fields safely
+      if(labKey) labKey.value = item.key || '';
+      if(labName) labName.value = item.name || '';
+      if(labCategory) labCategory.value = item.category || '';
+      if(labIcon) labIcon.value = item.icon || '';
+      if(labDescription) labDescription.value = item.description || '';
+      if(labTags) labTags.value = Array.isArray(item.tags) ? item.tags.join(',') : (item.tags||'');
+      try{ labProps.value = item.props && typeof item.props === 'object' ? JSON.stringify(item.props, null, 2) : (item.props||'{}'); }catch(e){ labProps.value = '{}'; }
+      renderPreview();
+      // update browser history to remove query param (optional)
+      try{ const u = new URL(location.href); u.searchParams.delete('edit'); window.history.replaceState({}, '', u.toString()); }catch(e){}
+    }catch(e){ console.warn('prefill failed', e); }
+  })();
+
   // minimal three.js preview
   function init3D(){
     try{
diff --git a/src/server/public/views/item_lab.ejs b/src/server/public/views/item_lab.ejs
index 954acd8..27537a4 100644
--- a/src/server/public/views/item_lab.ejs
+++ b/src/server/public/views/item_lab.ejs
@@ -1,5 +1,14 @@
-<%- include('partials/head') %>
-<div id="item-lab-root" class="p-6">
+<!DOCTYPE html>
+<html lang="es" class="scroll-smooth">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Item Lab</title>
+  <script src="https://cdn.tailwindcss.com"></script>
+  <link rel="stylesheet" href="/assets/css/styles.css?v=1" />
+</head>
+<body class="min-h-screen pixel-grid-bg pt-14">
+<div id="item-lab-root" class="p-6 max-w-6xl mx-auto">
   <h1 class="text-xl font-bold mb-4">Item Lab</h1>
   <div class="grid grid-cols-2 gap-4">
     <div>
@@ -58,4 +67,5 @@
 </div>
 <script src="/assets/js/three.min.js"></script>
 <script src="/assets/js/item_lab.js"></script>
-<%- include('partials/foot') %>
+</body>
+</html>
diff --git a/src/server/server.ts b/src/server/server.ts
index 6313aa4..ec11e21 100644
--- a/src/server/server.ts
+++ b/src/server/server.ts
@@ -1867,6 +1867,41 @@ export const server = createServer(
           }
         }
 
+        // Standalone Item Lab (opens as a separate page, not inside dashboard)
+        if (url.pathname === "/items/lab" || url.pathname === "/item-lab") {
+          try {
+            const publicViews = path.join(__dirname, "public", "views");
+            const locals = {
+              appName: pkg.name ?? "Amayo Bot",
+              user,
+              selectedGuildId: url.searchParams.get("guild") || null,
+            };
+            const pageFile = path.join(publicViews, "item_lab.ejs");
+            const pageBody = await ejs.renderFile(pageFile, locals, {
+              async: true,
+              views: [publicViews, viewsDir],
+            });
+            res.writeHead(
+              200,
+              applySecurityHeaders({
+                "Content-Type": "text/html; charset=utf-8",
+              })
+            );
+            res.end(pageBody);
+            return;
+          } catch (err) {
+            console.error("render item lab failed", err);
+            res.writeHead(
+              500,
+              applySecurityHeaders({
+                "Content-Type": "text/plain; charset=utf-8",
+              })
+            );
+            res.end("Item Lab render error");
+            return;
+          }
+        }
+
         // /dashboard -> main dashboard
         if (url.pathname === "/dashboard" || url.pathname === "/dashboard/") {
           // determine whether bot is in each guild (if we have a bot token)
diff --git a/src/server/views/partials/dashboard/dashboard_items.ejs b/src/server/views/partials/dashboard/dashboard_items.ejs
index 7c216e6..3eba325 100644
--- a/src/server/views/partials/dashboard/dashboard_items.ejs
+++ b/src/server/views/partials/dashboard/dashboard_items.ejs
@@ -2,7 +2,7 @@
   <div class="flex items-center justify-between mb-4">
     <h2 class="text-white text-lg font-semibold">Items</h2>
     <div>
-      <a id="createItemBtn" href="/dashboard/<%= selectedGuildId %>/items/lab" class="inline-flex items-center gap-2 px-3 py-1 bg-indigo-600 rounded text-white">Crear item</a>
+  <a id="createItemBtn" href="/items/lab?guild=<%= selectedGuildId %>" class="inline-flex items-center gap-2 px-3 py-1 bg-indigo-600 rounded text-white">Crear item</a>
     </div>
   </div>
 
diff --git a/src/server/views/partials/dashboard/dashboard_sidebar.ejs b/src/server/views/partials/dashboard/dashboard_sidebar.ejs
index 2040f43..0247469 100644
--- a/src/server/views/partials/dashboard/dashboard_sidebar.ejs
+++ b/src/server/views/partials/dashboard/dashboard_sidebar.ejs
@@ -47,7 +47,7 @@
   <li class="text-sm"><a href="/dashboard/<%= selectedGuild %>/settings" class="flex items-center gap-3"><span class="opacity-80">⚙️</span> General Settings</a></li>
   <li class="text-sm"><a href="/dashboard/<%= selectedGuild %>/items" class="flex items-center gap-3"><span class="opacity-80">🧭</span> Items</a></li>
   <li class="text-sm">
-    <a href="/dashboard/<%= selectedGuild %>/items/lab" class="flex items-center gap-3">
+  <a href="/items/lab?guild=<%= selectedGuild %>" class="flex items-center gap-3">
       <span class="inline-flex items-center justify-center w-6 h-6 rounded-full bg-white/6 animate-pulse">🔬</span>
       <span>Lab</span>
       <span id="labSpinner" class="ml-auto opacity-0 text-xs">⏳</span>