body {
    font-family: Arial, sans-serif;
    max-width: 400px;
    margin: 100px auto;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #333;
    margin-bottom: 30px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: bold;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-sizing: border-box;
}

button {
    width: 100%;
    background-color: #007bff;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #0056b3;
}

.error {
    color: red;
    margin-top: 10px;
    padding: 10px;
    background-color: #ffe6e6;
    border-radius: 5px;
}

.logout-message {
    color: green;
    margin-bottom: 20px;
    padding: 10px;
    background-color: #e6ffe6;
    border-radius: 5px;
}