body {
    background-color: #f0f2f5;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-card {
    width: 100%;
    max-width: 400px;
    border: none;
    border-radius: 15px;
}

.btn-primary {
    background-color: #0d6efd;
    border: none;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: #0b5ed7;
}