.sidebar-container{position:relative}.sidebar{position:fixed;top:0;left:-250px;width:250px;height:100%;background-color:#20452a;color:#fff;transition:left .3s ease;z-index:1000}.sidebar.open{left:0}.toggle-btn{position:absolute;top:20px;right:-50px;padding:10px;background-color:#20452a;color:#fff;border:none;cursor:pointer;font-size:16px}.menu{list-style:none;padding:50px 10px 20px}.menu-item{margin:10px 0}.menu-item a{color:#fff;text-decoration:none;font-size:18px;display:block;padding:10px;background-color:#20452a;border-radius:5px;transition:background-color .3s}.menu-item a:hover{background-color:#4b4a4a}.submenu{list-style:none;padding-left:20px;margin-top:10px}.submenu-item{margin-bottom:5px}.submenu-item a{background-color:transparent;color:#ddd;font-size:14px}.submenu-item a:hover{background-color:#4b4a4a}.overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.5);z-index:999}@media (max-width:768px){.sidebar{width:200px}.menu-item a{font-size:16px}.toggle-btn{right:-40px;font-size:14px}}.contact_icon a:hover{transform:scale(1.1);transition:transform .3s ease}