diff --git a/public/src/components/common/ConfirmDialog.tsx b/public/src/components/common/ConfirmDialog.tsx
index 4eef569..10e3055 100644
--- a/public/src/components/common/ConfirmDialog.tsx
+++ b/public/src/components/common/ConfirmDialog.tsx
@@ -24,7 +24,7 @@ export function ConfirmDialog({
   };
 
   return (
-    <div className="fixed inset-0 bg-black bg-opacity-50 dark:bg-opacity-70 flex items-center justify-center z-[10001]">
+    <div className="fixed inset-0 bg-black/20 dark:bg-black/30 flex items-center justify-center z-[10001]">
       <div className="bg-white dark:bg-gray-800 rounded-lg shadow-xl max-w-md w-full mx-4 animate-scale-in">
         <div className="p-6">
           <h3 className="text-lg font-bold text-gray-900 dark:text-white mb-2">
diff --git a/public/src/components/layout/Layout.tsx b/public/src/components/layout/Layout.tsx
index 10a5982..11df2c9 100644
--- a/public/src/components/layout/Layout.tsx
+++ b/public/src/components/layout/Layout.tsx
@@ -5,9 +5,11 @@ import { useUIStore } from '../../stores/uiStore';
 
 interface LayoutProps {
   children: ReactNode;
+  onToggleSidebar?: () => void;
+  isSidebarOpen?: boolean;
 }
 
-export function Layout({ children }: LayoutProps) {
+export function Layout({ children, onToggleSidebar, isSidebarOpen }: LayoutProps) {
   const { user, logout } = useAuthStore();
   const { darkMode, toggleDarkMode, showToast } = useUIStore();
   const navigate = useNavigate();
@@ -28,7 +30,26 @@ export function Layout({ children }: LayoutProps) {
     <div className="h-screen flex flex-col bg-gray-50 dark:bg-gray-900 transition-colors">
       <header className="bg-blue-600 dark:bg-gray-800 text-white shadow-md">
         <div className="px-4 py-3 flex items-center justify-between">
-          <h1 className="text-xl font-bold">ISP Wiremap</h1>
+          <div className="flex items-center gap-3">
+            {/* Mobile hamburger button */}
+            {onToggleSidebar && (
+              <button
+                onClick={onToggleSidebar}
+                className="md:hidden p-2 hover:bg-blue-700 dark:hover:bg-gray-700 rounded-lg transition-colors"
+                aria-label="Toggle sidebar"
+              >
+                <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  {isSidebarOpen ? (
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+                  ) : (
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 6h16M4 12h16M4 18h16" />
+                  )}
+                </svg>
+              </button>
+            )}
+            {/* Title - hidden on mobile when hamburger is present */}
+            <h1 className={`text-xl font-bold ${onToggleSidebar ? 'hidden md:block' : ''}`}>ISP Wiremap</h1>
+          </div>
 
           {user && (
             <div className="flex items-center gap-3">
diff --git a/public/src/components/map/ShareDialog.tsx b/public/src/components/map/ShareDialog.tsx
index bcded2b..5ca25d1 100644
--- a/public/src/components/map/ShareDialog.tsx
+++ b/public/src/components/map/ShareDialog.tsx
@@ -130,7 +130,7 @@ export function ShareDialog({ mapId, onClose }: ShareDialogProps) {
   };
 
   return (
-    <div className="fixed inset-0 bg-black bg-opacity-30 dark:bg-opacity-50 flex items-center justify-center transition-colors" style={{ zIndex: 10001 }}>
+    <div className="fixed inset-0 bg-black/20 dark:bg-black/30 flex items-center justify-center transition-colors" style={{ zIndex: 10001 }}>
       <div className="bg-white dark:bg-gray-800 rounded-lg shadow-2xl w-full max-w-2xl max-h-[80vh] overflow-hidden border border-gray-200 dark:border-gray-700 transition-colors animate-scale-in">
         {/* Header */}
         <div className="px-6 py-4 border-b border-gray-200 dark:border-gray-700 flex justify-between items-center bg-gradient-to-r from-blue-50 to-indigo-50 dark:from-gray-800 dark:to-gray-800">
diff --git a/public/src/pages/Dashboard.tsx b/public/src/pages/Dashboard.tsx
index 1c0bdbb..5a64d60 100644
--- a/public/src/pages/Dashboard.tsx
+++ b/public/src/pages/Dashboard.tsx
@@ -34,19 +34,42 @@ export function Dashboard() {
   const [showShareDialog, setShowShareDialog] = useState(false);
   const [shareMapId, setShareMapId] = useState<string | null>(null);
   const [activeLayer, setActiveLayer] = useState<MapLayer>('osm');
+  const [isSidebarOpen, setIsSidebarOpen] = useState(false);
 
   const handleShareMap = (mapId: string) => {
     setShareMapId(mapId);
     setShowShareDialog(true);
   };
 
+  const handleSelectMap = (mapId: string) => {
+    setSelectedMapId(mapId);
+    // Close sidebar on mobile after selecting a map
+    setIsSidebarOpen(false);
+  };
+
   return (
-    <Layout>
-      <div className="flex h-full">
+    <Layout onToggleSidebar={() => setIsSidebarOpen(!isSidebarOpen)} isSidebarOpen={isSidebarOpen}>
+      <div className="flex h-full relative">
+        {/* Mobile overlay */}
+        {isSidebarOpen && (
+          <div
+            className="md:hidden fixed inset-0 bg-black/20 transition-opacity"
+            style={{ zIndex: 9998 }}
+            onClick={() => setIsSidebarOpen(false)}
+          />
+        )}
+
         {/* Left sidebar with map list and toolbar */}
-        <div className="flex flex-col bg-white dark:bg-gray-800 border-r border-gray-200 dark:border-gray-700 transition-colors">
+        <div
+          className={`
+            flex flex-col bg-white dark:bg-gray-800 border-r border-gray-200 dark:border-gray-700 transition-all duration-300 ease-in-out
+            fixed md:relative h-full w-80
+            ${isSidebarOpen ? 'translate-x-0' : '-translate-x-full md:translate-x-0'}
+          `}
+          style={{ zIndex: 9999 }}
+        >
           <MapListSidebar
-            onSelectMap={setSelectedMapId}
+            onSelectMap={handleSelectMap}
             selectedMapId={selectedMapId}
             onShareMap={handleShareMap}
           />