body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background-color: #f8f9fa;
}
.header {
    background: #007bff;
    color: white;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}
.card {
    background: white;
    padding: 20px;
    margin: 15px 0;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.btn {
    display: inline-block;
    padding: 10px 20px;
    background: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 3px;
    margin: 5px;
}
.btn:hover { background: #0056b3; }
.status {
    padding: 15px;
    margin: 15px 0;
    border-radius: 5px;
    border-left: 4px solid;
}
.authenticated {
    background: #d4edda;
    border-color: #28a745;
    color: #155724;
}
.unauthenticated {
    background: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}
.success {
    background: #d4edda;
    padding: 15px;
    border: 1px solid #c3e6cb;
    border-radius: 5px;
    color: #155724;
    margin-bottom: 20px;
}
.user-info {
    background: white;
    padding: 20px;
    margin: 15px 0;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.attribute-list {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    margin: 10px 0;
}