body {
    background-color: #f4f6f8;
}

.login-container {
    width: 100%;
    max-width: 380px;
    background: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

    .login-container h3 {
        text-align: center;
        margin-bottom: 25px;
    }

    .login-container label {
        font-weight: 600;
    }

    .login-container input {
        width: 100%;
        padding: 8px;
        margin-top: 5px;
    }

    .login-container button {
        width: 100%;
        padding: 10px;
        font-weight: bold;
    }

.login-error {
    color: red;
    margin-top: 10px;
    text-align: center;
}