diff --git a/pos/static/js/config.js b/pos/static/js/config.js
index 836dbd2..e61ca6f 100644
--- a/pos/static/js/config.js
+++ b/pos/static/js/config.js
@@ -57,7 +57,7 @@ const Config = (() => {
     // -------------------------------------------------------------------------
     function setTheme(theme) {
         document.documentElement.setAttribute('data-theme', theme);
-        try { localStorage.setItem('nexus-theme', theme); } catch(e) {}
+        try { localStorage.setItem('pos_theme', theme); } catch(e) {}
 
         document.querySelectorAll('.theme-btn').forEach(function(btn) {
             btn.classList.toggle('is-active', btn.dataset.themeTarget === theme);
@@ -802,7 +802,7 @@ const Config = (() => {
 
         // Restore theme
         try {
-            var saved = localStorage.getItem('nexus-theme');
+            var saved = localStorage.getItem('pos_theme');
             if (saved === 'industrial' || saved === 'modern') {
                 setTheme(saved);
             }
diff --git a/pos/static/js/dashboard.js b/pos/static/js/dashboard.js
index 96c8591..4309215 100644
--- a/pos/static/js/dashboard.js
+++ b/pos/static/js/dashboard.js
@@ -48,7 +48,7 @@ const Dashboard = (() => {
     // -------------------------------------------------------------------------
     function setTheme(theme) {
         document.documentElement.setAttribute('data-theme', theme);
-        try { localStorage.setItem('nexus-theme', theme); } catch(e) {}
+        try { localStorage.setItem('pos_theme', theme); } catch(e) {}
         const btnInd = document.getElementById('btn-industrial');
         const btnMod = document.getElementById('btn-modern');
         if (btnInd) btnInd.classList.toggle('active', theme === 'industrial');
@@ -689,7 +689,7 @@ const Dashboard = (() => {
 
         // Restore theme
         try {
-            const saved = localStorage.getItem('nexus-theme');
+            const saved = localStorage.getItem('pos_theme');
             if (saved === 'industrial' || saved === 'modern') {
                 setTheme(saved);
             }
diff --git a/pos/static/js/reports.js b/pos/static/js/reports.js
index 7e78c2d..4b9cf3e 100644
--- a/pos/static/js/reports.js
+++ b/pos/static/js/reports.js
@@ -61,7 +61,7 @@ const Reports = (() => {
     // -------------------------------------------------------------------------
     function setTheme(theme) {
         document.documentElement.setAttribute('data-theme', theme);
-        try { localStorage.setItem('nexus-theme', theme); } catch(e) {}
+        try { localStorage.setItem('pos_theme', theme); } catch(e) {}
         var btnInd = document.getElementById('btn-industrial');
         var btnMod = document.getElementById('btn-modern');
         if (btnInd) btnInd.classList.toggle('is-active', theme === 'industrial');
@@ -745,7 +745,7 @@ const Reports = (() => {
 
         // Restore theme
         try {
-            var saved = localStorage.getItem('nexus-theme') || 'industrial';
+            var saved = localStorage.getItem('pos_theme') || 'industrial';
             setTheme(saved);
         } catch(e) {}
 
diff --git a/pos/templates/inventory.html b/pos/templates/inventory.html
index 4e9409c..5a23c89 100644
--- a/pos/templates/inventory.html
+++ b/pos/templates/inventory.html
@@ -644,13 +644,13 @@
       });
 
       // Persist preference
-      try { localStorage.setItem('nexus-theme', theme); } catch(e) {}
+      try { localStorage.setItem('pos_theme', theme); } catch(e) {}
     }
 
     // Restore on load
     (function() {
       var saved;
-      try { saved = localStorage.getItem('nexus-theme'); } catch(e) {}
+      try { saved = localStorage.getItem('pos_theme'); } catch(e) {}
       if (saved === 'industrial' || saved === 'modern') {
         setTheme(saved);
       }