{{-- Mobile-only burger button (toggles sidebar via Alpine sidebarOpen). --}}
<button type="button"
        class="clu-burger clu-icon-btn"
        @click="sidebarOpen = !sidebarOpen"
        aria-label="Menu öffnen">
    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" aria-hidden="true">
        <path d="M3 6h18M3 12h18M3 18h18"/>
    </svg>
</button>