body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    margin: 0;
    padding: 20px;
}

.signup-form {
    background: #fff;
    max-width: 400px;
    margin: 30px auto;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.signup-form h2 {
    text-align: center;
    margin-bottom: 20px;
}

.signup-form input[type="email"],
.signup-form input[type="password"],
.signup-form input[type="submit"] {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

.signup-form label {
    display: block;
    margin-top: 20px;
}

.signup-form input[type="checkbox"] {
    margin-right: 10px;
}

.signup-form input[type="submit"] {
    background: #0056b3;
    color: white;
    border: none;
    cursor: pointer;
}

.signup-form input[type="submit"]:hover {
    background: #003d82;
}

.signup-form .terms {
    margin: 20px 0;
    font-size: 14px;
    color: #333;
}

.signup-form .terms input {
    margin-right: 10px;
}

.signup-form .terms label {
    cursor: pointer;
}

.error-message {
    color: red;
    margin-bottom: 10px;
}