body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.shell{display:flex;min-height:100vh}.shell-nav{display:flex;flex-direction:column;gap:.25rem;width:220px;flex-shrink:0;padding:1rem;box-sizing:border-box;background:#1c2333}.shell-nav-brand{color:#fff;font-size:1.25rem;font-weight:700;padding:.5rem .75rem;margin-bottom:1rem}.shell-nav a{color:#b5bdd1;text-decoration:none;padding:.5rem .75rem;border-radius:6px}.shell-nav a:hover{background:#2a3348;color:#fff}.shell-nav a.active{background:#3651d4;color:#fff}.shell-content{flex:1;padding:2rem}.greeting{display:flex;gap:.5rem}.greeting input,.greeting button{padding:.4rem .75rem;font-size:1rem}