body {
    background-color: #212529;
    font-family: 'Segoe UI', Roboto, sans-serif;
    color: #fff;
}
.login-card {
    background-color: #2c3034;
    border: none;
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    padding: 2rem;
    width: 100%;
    max-width: 360px;
}
.login-card .form-control {
    background-color: #343a40;
    border: 1px solid #495057;
    color: #fff;
    border-radius: 0.5rem;
}
.login-card .form-control:focus {
    background-color: #3c4045;
    border-color: #0d6efd;
    box-shadow: none;
    color: #fff;
}
.login-card .btn {
    border-radius: 0.5rem;
    font-weight: 500;
}
.login-card h4 {
    font-weight: 600;
    color: #fff;
}