diff --git a/src/renderer/styles/app.css b/src/renderer/styles/app.css
index 62c5e3c..a8c312a 100644
--- a/src/renderer/styles/app.css
+++ b/src/renderer/styles/app.css
@@ -79,6 +79,7 @@
 
 .app-titlebar {
   grid-column: 1 / -1;
+  grid-row: 1;
   display: flex;
   align-items: center;
   justify-content: center;
@@ -179,6 +180,7 @@
 
 /* ─── Sidebar ──────────────────────────────────────────────────── */
 .sidebar {
+  grid-row: 2;
   background: var(--sidebar-bg);
   border-right: 1px solid var(--border);
   overflow: hidden;
@@ -188,6 +190,7 @@
 
 /* ─── Editor area ──────────────────────────────────────────────── */
 .editor-area {
+  grid-row: 2;
   display: flex;
   flex-direction: column;
   overflow: hidden;
@@ -205,6 +208,7 @@
 
 /* ─── Chat area ────────────────────────────────────────────────── */
 .chat-area {
+  grid-row: 2;
   overflow: hidden;
   display: flex;
   flex-direction: column;