body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background: -webkit-linear-gradient(0deg, rgb(255, 255, 255), rgb(148, 203, 255));
    background: -moz-linear-gradient(0deg, rgb(255, 255, 255), rgb(148, 203, 255));
    background: linear-gradient(0deg, rgb(255, 255, 255), rgb(148, 203, 255));
}

.login-container {
    width: 350px;
    padding: 30px;
    border-radius: 10px;
    -webkit-box-shadow: 0px 0px 39px 17px rgba(34, 60, 80, 0.13);
    -moz-box-shadow: 0px 0px 39px 17px rgba(34, 60, 80, 0.13);
    box-shadow: 0px 0px 39px 17px rgba(34, 60, 80, 0.13);
    background: #fff;
    text-align: center;
}

h2 {
    margin-bottom: 20px;
    color: #4285f4;
}

.form-group {
    margin-bottom: 15px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}

.error-message {
    color: #dc3545;
    margin-bottom: 15px;
    font-size: 14px;
}

.login-btn {
    width: 100%;
    padding: 12px;
    border: none;
    background: #4285f4;
    color: #fff;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

.login-btn:hover {
    background: #3367d6;
}