body {
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
}
.theme-toggle {
    cursor: pointer;
}
.table-responsive {
    max-height: 70vh;
}
@media (max-width: 576px) {
    h1, h2 { font-size: 1.4rem; }
    .navbar-text { display: block; margin-top: .5rem; }
}