fixed bug

themes/Ying/layouts/partials/head.html

@@ -52,6 +52,19 @@
           }
         }
         document.documentElement.setAttribute('data-theme', theme);
+        
+        // Listen for system changes
+        if (window.matchMedia) {
+          window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', event => {
+             // Only switch if user hasn't manually set a preference
+             // Or maybe we should respect system change if user hasn't explicitly locked it?
+             // Common behavior: manual override sticks.
+             if (!localStorage.getItem('theme')) {
+                 var newTheme = event.matches ? "dark" : "light";
+                 document.documentElement.setAttribute('data-theme', newTheme);
+             }
+          });
+        }
       } catch (e) {}
     })();
   </script>