#app{font-family:system-ui,-apple-system,sans-serif;min-height:100vh}.app-header{position:sticky;top:0;z-index:50;padding:1rem 1.5rem;border-bottom:1px solid #e5e7eb;background:#fff;display:flex;align-items:center;justify-content:space-between}.app-header h1{margin:0;font-size:1.25rem}.app-header nav a,.app-header nav .user{margin-left:1rem}.app-header nav a{color:#2563eb;text-decoration:none}.app-header nav a.router-link-active{font-weight:600}.app-header nav .user{color:#374151}.app-header nav .btn-link{margin-left:1rem;background:none;border:none;color:#2563eb;cursor:pointer;font:inherit;padding:0}.app-header nav .btn-link:hover{text-decoration:underline}.app-main{padding:1.5rem}