.sidebar{position:fixed;top:0;left:0;width:250px;height:100%;background-color:#111;color:white;transform:translateX(-100%);transition:transform .3s ease;z-index:1000;padding:2rem 1rem}.sidebar.open{transform:translateX(0)}.sidebar nav ul{list-style:none;padding:0}.sidebar nav ul li{margin:1rem 0}.sidebar nav ul li a{color:white;text-decoration:none;font-size:1.2rem}.sidebar-toggle{position:fixed;top:1rem;left:1rem;z-index:1100;padding:.5rem 1rem;background-color:#111;color:white;border:none;cursor:pointer;border-radius:4px}.sidebar-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.4);z-index:900}