.auth-shell {
    display: grid;
    place-items: center;
    padding: 10px 0;
}

.auth-card {
    width: 100%;
    max-width: 500px;
    padding: 24px;
}

.auth-title {
    margin: 0;
    text-align: center;
}

.auth-subtitle {
    margin: 8px 0 18px;
    text-align: center;
    color: #64748b;
}

.auth-alt-link {
    margin: 14px 0 0;
    text-align: center;
    color: #64748b;
}

.auth-alt-link a {
    color: #1d4ed8;
    font-weight: 600;
    text-decoration: none;
}

.auth-alt-link a:hover {
    text-decoration: underline;
}

@media (max-width: 640px) {
    .auth-card {
        padding: 18px;
    }
}