Remade side bar to work better on phone and tablet

Provider/frontend/src/App.svelte

@@ -13,6 +13,7 @@
 
   /** @type {'dashboard' | 'tasks' | 'users'} */
   let currentView = $state("dashboard");
+  let mobileMenuOpen = $state(false);
 
   let systemInfo = $state({
     chip: "—",
@@ -139,9 +140,35 @@
 </script>
 
 <div class="app-layout">
-  <Sidebar {currentView} onNavigate={(view) => currentView = view} />
+  <Sidebar 
+    {currentView} 
+    isOpen={mobileMenuOpen}
+    onNavigate={(view) => { currentView = view; mobileMenuOpen = false; }} 
+    onToggle={() => mobileMenuOpen = !mobileMenuOpen}
+  />
+
+  {#if mobileMenuOpen}
+    <button 
+      class="mobile-backdrop" 
+      onclick={() => mobileMenuOpen = false}
+      aria-label="Close menu"
+    ></button>
+  {/if}
 
   <main class="main-content">
+    <!-- Mobile Top Bar -->
+    <header class="mobile-header">
+      <button class="hamburger" onclick={() => mobileMenuOpen = true}>
+        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round">
+          <line x1="3" y1="6" x2="21" y2="6"></line>
+          <line x1="3" y1="12" x2="21" y2="12"></line>
+          <line x1="3" y1="18" x2="21" y2="18"></line>
+        </svg>
+      </button>
+      <span class="mobile-title">Calendink</span>
+      <div style="width: 40px;"></div> <!-- Spacer -->
+    </header>
+
     <div class="w-full max-w-6xl mx-auto space-y-8">
       <!-- Header -->
       <div class="text-center">
@@ -370,13 +397,77 @@
 
   .main-content {
     flex: 1;
-    padding: 16px 32px;
+    padding: 32px;
+    height: 100vh;
     overflow-y: auto;
+    background: radial-gradient(circle at top right, var(--color-bg-card), transparent 40%),
+                var(--color-bg-primary);
+  }
+
+  .mobile-header {
+    display: none;
+    align-items: center;
+    justify-content: space-between;
+    padding: 12px 16px;
+    background: var(--color-bg-card);
+    border-bottom: 1px solid var(--color-border);
+    position: sticky;
+    top: 0;
+    z-index: 50;
+    backdrop-filter: blur(10px);
+  }
+
+  .hamburger {
+    background: none;
+    border: none;
+    color: var(--color-text-primary);
+    padding: 8px;
+    cursor: pointer;
+  }
+
+  .hamburger svg {
+    width: 24px;
+    height: 24px;
+  }
+
+  .mobile-title {
+    font-weight: 700;
+    font-size: 16px;
+    letter-spacing: -0.02em;
+    color: var(--color-accent);
+  }
+
+  .mobile-backdrop {
+    display: none;
+    position: fixed;
+    inset: 0;
+    background: rgba(0, 0, 0, 0.4);
+    backdrop-filter: blur(4px);
+    z-index: 999;
+    border: none;
+    padding: 0;
+    cursor: pointer;
+    animation: fadeIn 0.2s ease-out;
+  }
+
+  @keyframes fadeIn {
+    from { opacity: 0; }
+    to { opacity: 1; }
   }
 
   @media (max-width: 768px) {
     .main-content {
       padding: 16px;
+      height: auto;
+    }
+
+    .mobile-header {
+      display: flex;
+      margin: -16px -16px 20px -16px;
+    }
+
+    .mobile-backdrop {
+      display: block;
     }
   }
 </style>