/* サイドバー言語セレクタのスタイル */
.sidebar-lang-selector {
    padding: 0.5em 1em;
}

.sidebar-lang-title {
    font-size: 0.85em;
    font-weight: bold;
    margin-bottom: 0.4em;
    margin-top: 0.6em;
    color: var(--color-sidebar-caption-text);
}

.sidebar-lang-title:first-child {
    margin-top: 0;
}

.sidebar-lang-buttons {
    display: flex;
    gap: 0.4em;
}

.sidebar-lang-btn {
    flex: 1;
    padding: 0.3em 0.6em;
    font-size: 0.8em;
    border: 1px solid var(--color-sidebar-link-text);
    border-radius: 4px;
    background: transparent;
    color: var(--color-sidebar-link-text);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.sidebar-lang-btn:hover {
    background: var(--color-sidebar-link-text);
    color: var(--color-sidebar-background);
}

.sidebar-lang-btn.active {
    background: var(--color-sidebar-link-text);
    color: var(--color-sidebar-background);
    font-weight: bold;
}