.theme-toggle.btn {
    width: 40px;
    min-width: 40px;
    height: 40px;
    flex: 0 0 40px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--bs-body-color, #212529);
    border-color: var(--bs-border-color, #ced4da);
}
.theme-toggle svg {
    width: 20px;
    height: 20px;
    flex: 0 0 20px;
}
.theme-toggle .theme-sun { display: none; }
[data-bs-theme="dark"] .theme-toggle .theme-sun { display: block; }
[data-bs-theme="dark"] .theme-toggle .theme-moon { display: none; }
.navbar .theme-toggle-item {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-right: .75rem;
    padding: .25rem 0;
}