diff --git a/src/web/templates/index.html b/src/web/templates/index.html
index f61793a..066cd7b 100644
--- a/src/web/templates/index.html
+++ b/src/web/templates/index.html
@@ -94,22 +94,38 @@
         }
         .viewport-3d canvas { width: 100% !important; height: 100% !important; }
 
-        /* Court tab: 3D scene takes most space, cameras are small below */
-        .court-viewport-main {
-            height: calc(100vh - 240px);
-            min-height: 400px;
+        /* Split layout: 3D left ~80%, sidebar right ~20% with cam previews */
+        .split-layout {
+            display: flex;
+            height: calc(100vh - 100px);
+            overflow: hidden;
+        }
+        .split-main {
+            flex: 1;
+            position: relative;
+            min-width: 0;
+        }
+        .split-main .viewport-3d {
+            width: 100%;
+            height: 100%;
             border-top: none;
         }
-        .cameras-small {
-            padding: 4px 8px;
+        .split-sidebar {
+            width: 220px;
+            flex-shrink: 0;
+            display: flex;
+            flex-direction: column;
             gap: 6px;
+            padding: 6px;
+            background: #0d0d20;
+            border-left: 1px solid #222;
+            overflow-y: auto;
         }
-        .cam-box-small {
-            max-width: 320px;
-            flex: 0 0 auto;
-        }
-        .cam-box-small img {
+        .split-sidebar img {
+            width: 100%;
             border-radius: 4px;
+            border: 1px solid #222;
+            display: block;
         }
 
         /* Calibrate button */
@@ -141,21 +157,21 @@
         .calibrate-status .ok { color: #4ecca3; }
         .calibrate-status .fail { color: #ff4444; }
 
-        /* VAR panel */
-        .var-panel {
+        /* VAR panel (sidebar version) */
+        .var-panel-sidebar {
             display: flex;
-            align-items: stretch;
-            gap: 12px;
-            padding: 8px 16px;
+            flex-direction: column;
+            gap: 8px;
+            padding: 10px;
             background: #111128;
-            border-top: 1px solid #222;
-            min-height: 60px;
+            border-radius: 6px;
+            border: 1px solid #222;
+            margin-top: 4px;
         }
         .var-indicator {
             display: flex;
             align-items: center;
             gap: 8px;
-            padding: 0 12px;
         }
         .var-dot {
             width: 14px;
@@ -189,8 +205,7 @@
         .var-info .var-dist { color: #aaa; }
 
         .var-snapshot {
-            width: 160px;
-            height: 90px;
+            width: 100%;
             border-radius: 4px;
             border: 1px solid #333;
             object-fit: cover;
@@ -202,6 +217,7 @@
             justify-content: center;
             color: #444;
             font-size: 11px;
+            height: 60px;
         }
 
         /* Event banner */
@@ -279,42 +295,42 @@
             CAM 1: <span id="calStatus1">not calibrated</span>
         </div>
     </div>
-    <div class="viewport-3d court-viewport-main" id="court-3d"></div>
-    <div class="cameras cameras-small">
-        <div class="cam-box cam-box-small">
-            <img id="court-cam0" alt="Camera 0">
+    <div class="split-layout">
+        <div class="split-main">
+            <div class="viewport-3d" id="court-3d"></div>
         </div>
-        <div class="cam-box cam-box-small">
+        <div class="split-sidebar">
+            <img id="court-cam0" alt="Camera 0">
             <img id="court-cam1" alt="Camera 1">
         </div>
     </div>
 </div>
 
-<!-- Tab 3: Trajectory -->
+<!-- Tab 3: Trajectory — 3D left, cam previews + VAR panel right -->
 <div class="tab-content" id="tab-trajectory">
-    <div class="cameras">
-        <div class="cam-box">
+    <div class="split-layout">
+        <div class="split-main">
+            <div class="viewport-3d" id="trajectory-3d"></div>
+        </div>
+        <div class="split-sidebar">
             <img id="traj-cam0" alt="Camera 0">
-        </div>
-        <div class="cam-box">
             <img id="traj-cam1" alt="Camera 1">
+            <!-- VAR panel in sidebar -->
+            <div class="var-panel-sidebar">
+                <div class="var-indicator">
+                    <div class="var-dot" id="varDot"></div>
+                    <div class="var-label" id="varLabel">VAR</div>
+                </div>
+                <div class="var-info" id="varInfo">
+                    <div class="var-line" id="varLine">No events</div>
+                    <div class="var-timer" id="varTimer"></div>
+                    <div class="var-dist" id="varDist"></div>
+                </div>
+                <img class="var-snapshot" id="varSnapshot" style="display:none">
+                <div class="var-snapshot empty" id="varSnapshotEmpty">No snapshot</div>
+            </div>
         </div>
     </div>
-    <div class="viewport-3d" id="trajectory-3d"></div>
-    <!-- VAR panel at the bottom of trajectory tab -->
-    <div class="var-panel">
-        <div class="var-indicator">
-            <div class="var-dot" id="varDot"></div>
-            <div class="var-label" id="varLabel">VAR</div>
-        </div>
-        <div class="var-info" id="varInfo">
-            <div class="var-line" id="varLine">No events</div>
-            <div class="var-timer" id="varTimer"></div>
-            <div class="var-dist" id="varDist"></div>
-        </div>
-        <img class="var-snapshot" id="varSnapshot" style="display:none">
-        <div class="var-snapshot empty" id="varSnapshotEmpty">No snapshot</div>
-    </div>
 </div>
 
 <div class="info-panel">