.layout{min-height:100vh;display:flex;flex-direction:column}.header{height:64px;background-color:#242424;display:flex;align-items:center;padding:0 24px;color:#fff}.content-wrapper{display:flex;flex:1;height:calc(100vh - 64px)}.sidebar{width:84px;background-color:#2a2a2a;transition:width .3s ease;overflow:hidden;color:#fff}.sidebar.collapsed{width:0}.main-content{flex:1;background-color:#1a1a1a;color:#fff;padding:24px;min-height:0;overflow-y:auto}