<input type="checkbox" class="form-check-input" id="all_sites" name="all_sites"
                            onchange="document.getElementById('top_sites').disabled = this.checked;">
                        <label class="form-check-label" for="all_sites">Search All Sites</label>
                    </div>
                </div>
            </div>
        </div>

        <!-- Filters Section -->
        <div class="mb-4">
            <div class="section-header" onclick="toggleSection('filters')">
            