// layouts/partials/sidebar/left.html
<li class="menu-bottom-section">
    <ol class="menu">
        {{- $currentLanguageCode := .Language.Lang -}}
        {{- $otherLanguage := "" -}}
        {{ if (compare.Gt .Site.Home.AllTranslations.Len 1) }}
        {{ with .Site.Home.AllTranslations }}
        {{ range . }}
        {{ if ne .Language.Lang $currentLanguageCode }}
        {{- $otherLanguage = . -}}
        {{ end }}
        {{ end }}
        <li id="i18n-switch">
            {{ partial "helper/icon" "language" }}
            <a href="{{ $otherLanguage.Permalink }}">
                {{ $otherLanguage.Language.LanguageName }}
            </a>
        </li>
        {{ end }}
        {{ end }}

        {{ if (default false .Site.Params.colorScheme.toggle) }}
        <li id="dark-mode-toggle">
            {{ partial "helper/icon" "toggle-left" }}
            {{ partial "helper/icon" "toggle-right" }}
            <span>{{ T "darkMode" }}</span>
        </li>
        {{ end }}
    </ol>
</li>

// assets/scss/partials/sidebar.scss
#i18n-switch {
    color: var(--body-text-color);
    display: flex;
    align-items: center;
    gap: var(--menu-icon-separation);
}