body {
    background: linear-gradient(135deg, #007bff, #6610f2);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-card {
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    width: 380px;
    padding: 30px;
}

.login-card h3 {
    font-weight: bold;
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}