body {
    font-family: Arial, sans-serif;
    text-align: center;
    background: #f5f5f5;
}

.container {
    max-width: 600px;
    margin: 50px auto;
}

.client-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.client-btn {
    padding: 10px;
    background: #007BFF;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

.login-container {
    width: 300px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 5px;
}

.error {
    color: red;
}

.logout-btn {
    background: red;
    color: white;
    padding: 5px 10px;
    text-decoration: none;
    border-radius: 5px;
}