body {
    margin: 0;
    background: #f3f4f6;
    font-family: Arial, sans-serif;

    height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;
}

.login-box {
    width: 350px;

    background: white;

    padding: 30px;

    border-radius: 10px;

    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

.login-box h2 {
    margin-top: 0;
    text-align: center;
}

label {
    display: block;
    margin-top: 15px;
}

input {
    width: 100%;

    padding: 10px;

    margin-top: 5px;

    border: 1px solid #ccc;

    border-radius: 5px;
}

button {
    width: 100%;

    padding: 12px;

    margin-top: 20px;

    border: none;

    background: #2563eb;

    color: white;

    border-radius: 5px;

    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

.error {
    background: #fee2e2;

    color: #991b1b;

    padding: 10px;

    border-radius: 5px;

    margin-bottom: 15px;
}

a {
    display: block;

    text-align: center;

    margin-top: 15px;
}