Add working Start menu with app launcher

css/style.css

@@ -312,10 +312,105 @@ body {
     background: rgba(255, 255, 255, 0.1);
 }
 
+.start-button.active {
+    background: rgba(255, 255, 255, 0.15);
+}
+
 .start-button i {
     color: var(--accent);
 }
 
+/* Start Menu */
+.start-menu {
+    position: absolute;
+    bottom: 55px;
+    left: 10px;
+    width: 280px;
+    background: rgba(15, 15, 35, 0.98);
+    backdrop-filter: blur(20px);
+    border-radius: 12px;
+    border: 1px solid var(--border);
+    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
+    display: none;
+    overflow: hidden;
+}
+
+.start-menu.open {
+    display: block;
+    animation: slideUp 0.2s ease;
+}
+
+@keyframes slideUp {
+    from {
+        opacity: 0;
+        transform: translateY(10px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+.start-menu-header {
+    padding: 20px;
+    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-secondary) 100%);
+    display: flex;
+    align-items: center;
+    gap: 12px;
+}
+
+.start-menu-header i {
+    font-size: 32px;
+}
+
+.start-menu-header span {
+    font-weight: 600;
+    font-size: 16px;
+}
+
+.start-menu-items {
+    padding: 10px 0;
+}
+
+.start-menu-item {
+    padding: 12px 20px;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    transition: background 0.2s;
+}
+
+.start-menu-item:hover {
+    background: rgba(255, 255, 255, 0.1);
+}
+
+.start-menu-item i {
+    width: 20px;
+    color: var(--accent);
+}
+
+.start-menu-footer {
+    padding: 15px 20px;
+    border-top: 1px solid var(--border);
+    display: flex;
+    gap: 20px;
+}
+
+.start-menu-footer a {
+    color: var(--text-secondary);
+    text-decoration: none;
+    font-size: 13px;
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    transition: color 0.2s;
+}
+
+.start-menu-footer a:hover {
+    color: var(--accent);
+}
+
 .taskbar-items {
     flex: 1;
     display: flex;