body {
    font-family: Arial, sans-serif;
    background: #f0f2f5;
    margin: 0;
    padding: 0;
}
.container, .form-container {
    max-width: 400px;
    margin: 80px auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
h2 {
    text-align: center;
    margin-bottom: 20px;
}
input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
}
.btn {
    display: block;
    width: 100%;
    padding: 10px;
    background: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    text-align: center;
    cursor: pointer;
}
.btn:hover {
    background: #0056b3;
}
.link {
    display: block;
    text-align: center;
    margin-top: 10px;
    color: #007bff;
    text-decoration: none;
}
.link:hover {
    text-decoration: underline;
}
.error {
    color: red;
    text-align: center;
}