.admin-container{display:flex;height:100vh}.sidebar{width:220px;background:#1e293b;color:#fff;padding:16px}.sidebar .logo{margin-bottom:20px}.sidebar ul{list-style:none;padding:0}.sidebar li{margin-bottom:12px}.sidebar a{color:#fff;text-decoration:none}.main{flex:1;display:flex;flex-direction:column}.header{height:60px;background:#f1f5f9;display:flex;align-items:center;padding:0 16px;border-bottom:1px solid #ddd}.content{flex:1;padding:16px;background:#f8fafc}.active{font-weight:700;color:#3b82f6}