body {
    background: #181a1b;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-container {
    max-width: 400px;
    padding: 2rem;
    background: #23272b;
    border-radius: 1rem;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
}
.logo {
    width: 120px;
    height: auto;
    display: block;
    margin: 0 auto 1.5rem auto;
    filter: drop-shadow(0 0 10px #000);
}
.form-label, h2, .btn {
    color: #fff !important;
}
.form-control {
    background: #181a1b;
    color: #fff;
    border: 1px solid #444;
}
.form-control:focus {
    background: #23272b;
    color: #fff;
    border-color: #0d6efd;
    box-shadow: none;
}
.btn-primary {
    background-color: #0d6efd;
    border: none;
}
.btn-primary:hover {
    background-color: #0b5ed7;
}