diff --git a/src/components/Sidebar.tsx b/src/components/Sidebar.tsx
new file mode 100644
index 0000000..380f745
--- /dev/null
+++ b/src/components/Sidebar.tsx
@@ -0,0 +1,91 @@
+import { Link } from "react-router-dom";
+import { Separator } from "@/components/ui/separator";
+import {
+  LayoutDashboard, FolderKanban, ListChecks, CalendarDays,
+  Settings, LogOut, Layout
+} from "lucide-react";
+import { useAuth } from "@/hooks/use-tygarun";
+
+interface SidebarProps {
+  activePath: string;
+}
+
+const navItems = [
+  { path: "/", label: "Dashboard", icon: LayoutDashboard },
+  { path: "/projects", label: "Projects", icon: FolderKanban },
+  { path: "/tasks", label: "Tasks", icon: ListChecks },
+  { path: "/timeline", label: "Timeline", icon: CalendarDays },
+  { path: "/settings", label: "Settings", icon: Settings },
+];
+
+function SidebarContent({ activePath }: SidebarProps) {
+  const { signout, isSignedIn } = useAuth();
+  return (
+    <div className="flex flex-col h-full w-full bg-slate-900 text-white">
+      {/* ── Logo ── */}
+      <div className="p-6">
+        <Link to="/" className="flex items-center gap-3 group">
+          <div className="h-9 w-9 rounded-lg bg-violet-600 flex items-center justify-center group-hover:bg-violet-500 transition-colors">
+            <Layout className="h-5 w-5 text-white" />
+          </div>
+          <span className="text-lg font-bold tracking-tight">TaskFlow</span>
+        </Link>
+      </div>
+
+      <Separator className="bg-slate-800 mx-4" />
+
+      {/* ── Navigation ── */}
+      <nav className="flex-1 p-4 space-y-1">
+        {navItems.map((item) => {
+          const isActive = activePath === item.path;
+          return (
+            <Link
+              key={item.path}
+              to={item.path}
+              className={`relative flex items-center gap-3 px-3 py-2.5 rounded-lg text-sm font-medium transition-colors duration-200 \${
+                isActive
+                  ? "bg-violet-500/15 text-violet-400 shadow-sm before:absolute before:left-0 before:top-0 before:bottom-0 before:w-0.5 before:bg-violet-500 before:rounded-r"
+                  : "text-slate-400 hover:text-white hover:bg-slate-800"
+              }`}
+            >
+              <item.icon className="h-5 w-5" />
+              {item.label}
+            </Link>
+          );
+        })}
+      </nav>
+
+      <Separator className="bg-slate-800 mx-4" />
+
+      {/* ── User + Logout ── */}
+      <div className="p-4 space-y-2">
+        <div className="flex items-center gap-3 px-3 py-2">
+          <div className="h-8 w-8 rounded-full bg-violet-500/20 flex items-center justify-center">
+            <span className="text-xs font-semibold text-violet-400">AK</span>
+          </div>
+          <div className="flex-1 min-w-0">
+            <p className="text-sm font-medium text-white truncate">Alex Kim</p>
+            <p className="text-xs text-slate-500 truncate">Admin</p>
+          </div>
+        </div>
+        <button onClick={() => signout()} className="flex items-center gap-3 px-3 py-2.5 rounded-lg text-sm font-medium text-slate-400 hover:text-red-400 hover:bg-slate-800 transition-colors w-full">
+          <LogOut className="h-5 w-5" />
+          {isSignedIn ? "Log Out" : "Signed Out"}
+        </button>
+      </div>
+    </div>
+  );
+}
+
+export default function Sidebar({ activePath }: SidebarProps) {
+  return (
+    <>
+      {/* Desktop Sidebar */}
+      <aside className="hidden lg:flex lg:fixed lg:inset-y-0 lg:left-0 lg:w-64 lg:z-50">
+        <SidebarContent activePath={activePath} />
+      </aside>
+    </>
+  );
+}
+
+export { SidebarContent };