body {
    margin: 0;
    padding: 0;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #ffffff;
}

header {
    text-align: center;
    padding: 20px 0;
}

header .logo img {
    max-width: 80px;
}

header h1 {
    margin-top: 10px;
    font-size: 2em;
}

main {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 70vh;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 400px;
    background-color: #f9f9f9;
    padding: 40px 30px;
    border: 1px solid #ddd;
    border-radius: 8px;
    text-align: center;
}

.login-container h2 {
    margin-bottom: 30px;
    font-size: 1.8em;
}

.input-group {
    margin-bottom: 20px;
    text-align: left;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 1em;
    color: #333;
}

.input-group input {
    width: 100%;
    padding: 10px;
    font-size: 1em;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.button-group {
    margin-top: 20px;
}

.button {
    width: 100%;
    padding: 12px;
    font-size: 1em;
    color: #fff;
    background-color: #333;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.button:hover {
    background-color: #555;
}

.error-message {
    color: #e74c3c;
    margin-bottom: 20px;
}

.login-container a.button {
    display: inline-block;
    margin-top: 20px;
    text-decoration: none;
    color: #fff;
    background-color: #333;
    padding: 12px 20px;
    border-radius: 4px;
}

.login-container a.button:hover {
    background-color: #555;
}