.layout{display:flex;min-height:100vh}.sidebar{width:250px;background:#1a1a2e;color:#fff;padding:20px;display:flex;flex-direction:column}.sidebar-header{margin-bottom:40px}.sidebar-header h2{font-size:24px;margin-bottom:5px}.sidebar-header p{font-size:14px;color:#888}.nav-menu{list-style:none;flex:1}.nav-menu li{margin-bottom:10px}.nav-menu a{display:block;padding:12px 16px;color:#fff;text-decoration:none;border-radius:8px;transition:background .2s}.nav-menu a:hover{background:#16213e}.logout-btn{padding:12px;background:#e74c3c;color:#fff;border:none;border-radius:8px;font-size:14px;transition:background .2s}.logout-btn:hover{background:#c0392b}.main-content{flex:1;padding:40px;overflow-y:auto}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit}