@php
        $menu = json_decode($get_setting['menu_header'] ?? '[]', true) ?: [];
    @endphp

    <div class="container-fluid py-4">

        <form action="{{ route('admin.settings.update') }}" method="POST">
            @csrf

            <div class="card shadow-sm border-0">

                <!-- HEADER -->
                <div class="card-header bg-white d-flex justify-content-between align-items-center">
                    <div>
                        <h5 class="mb-0 fw-bold">Mega Menu Builder</h5>
                        <small class="text-muted">Parent → Child → Subchild Structure</small>
                    </div>

                    <button type="button" id="add-parent" class="btn btn-primary btn-sm">
                        + Add Parent
                    </button>
                </div>

                <!-- BODY -->
                <div class="card-body">

                    <!-- TOGGLES -->
                    <div class="row mb-4">

                        <div class="col-md-6">
                            <div class="p-3 border rounded">
                                <label class="fw-bold">Show Header</label>
                                <input type="checkbox" name="show_header"
                                    {{ ($get_setting['show_header'] ?? 0) == 1 ? 'checked' : '' }}>
                            </div>
                        </div>

                        <div class="col-md-6">
                            <div class="p-3 border rounded">
                                <label class="fw-bold">Enable Mega Menu</label>
                                <input type="checkbox" name="enable_mega_menu"
                                    {{ ($get_setting['enable_mega_menu'] ?? 0) == 1 ? 'checked' : '' }}>
                            </div>
                        </div>

                    </div>

                    <!-- MENU LIST -->
                    <ul id="menu" class="list-unstyled">

                        @foreach ($menu as $p => $parent)
                            <li class="border p-3 mb-3 bg-light">

                                <!-- PARENT -->
                                <div class="d-flex gap-2 align-items-center mb-2">

                                    <input type="text" name="menu_header[{{ $p }}][title]"
                                        value="{{ $parent['title'] ?? '' }}" class="form-control form-control-sm"
                                        placeholder="Parent Menu">

                                    <label class="small">Show</label>
                                    <input type="checkbox" name="menu_header[{{ $p }}][visible]"
                                        {{ !empty($parent['visible']) ? 'checked' : '' }}>

                                    <button type="button" class="btn btn-danger btn-sm remove">X</button>
                                </div>

                                <!-- CHILD LIST -->
                                <ul class="ms-4">

                                    @if (!empty($parent['children']))
                                        @foreach ($parent['children'] as $c => $child)
                                            <li class="mb-2">

                                                <div class="d-flex gap-2">

                                                    <input type="text"
                                                        name="menu_header[{{ $p }}][children][{{ $c }}][title]"
                                                        value="{{ $child['title'] ?? '' }}"
                                                        class="form-control form-control-sm" placeholder="Child">

                                                    <input type="text"
                                                        name="menu_header[{{ $p }}][children][{{ $c }}][link]"
                                                        value="{{ $child['link'] ?? '' }}"
                                                        class="form-control form-control-sm" placeholder="/link">

                                                    <button type="button" class="btn btn-sm btn-danger remove">X</button>

                                                </div>

                                                <!-- SUB CHILD -->
                                                @if (!empty($child['children']))
                                                    <ul class="ms-4 mt-2">

                                                        @foreach ($child['children'] as $s => $sub)
                                                            <li class="d-flex gap-2 mb-1">

                                                                <input type="text"
                                                                    name="menu_header[{{ $p }}][children][{{ $c }}][children][{{ $s }}][title]"
                                                                    value="{{ $sub['title'] ?? '' }}"
                                                                    class="form-control form-control-sm"
                                                                    placeholder="Sub Child">

                                                                <input type="text"
                                                                    name="menu_header[{{ $p }}][children][{{ $c }}][children][{{ $s }}][link]"
                                                                    value="{{ $sub['link'] ?? '' }}"
                                                                    class="form-control form-control-sm"
                                                                    placeholder="/link">

                                                                <button type="button"
                                                                    class="btn btn-sm btn-danger remove">X</button>

                                                            </li>
                                                        @endforeach

                                                    </ul>
                                                @endif

                                            </li>
                                        @endforeach
                                    @endif

                                </ul>

                                <!-- ADD CHILD -->
                                <button type="button" class="btn btn-sm btn-outline-primary add-child mt-2"
                                    data-parent="{{ $p }}">
                                    + Add Child
                                </button>

                            </li>
                        @endforeach

                    </ul>

                </div>

                <!-- FOOTER -->
                <div class="card-footer bg-white text-end">
                    <button type="submit" class="btn btn-success px-4">
                        Save Menu
                    </button>
                </div>

            </div>

        </form>

    </div>

    {{-- ================= STYLE ================= --}}
    <style>
        .border {
            border-radius: 8px;
        }

        .bg-light {
            background: #f8f9fc;
        }
    </style>

    {{-- ================= SCRIPT ================= --}}
    <script>
        let parentIndex = {{ count($menu) }};

        // ADD PARENT
        document.getElementById('add-parent').addEventListener('click', function() {

            let html = `
    <li class="border p-3 mb-3 bg-light">

        <div class="d-flex gap-2 align-items-center mb-2">

            <input type="text"
                name="menu_header[${parentIndex}][title]"
                class="form-control form-control-sm"
                placeholder="Parent Menu">

            <label class="small">Show</label>
            <input type="checkbox" name="menu_header[${parentIndex}][visible]">

            <button type="button" class="btn btn-danger btn-sm remove">X</button>

        </div>

        <ul class="ms-4"></ul>

        <button type="button"
            class="btn btn-sm btn-outline-primary add-child mt-2"
            data-parent="${parentIndex}">
            + Add Child
        </button>

    </li>`;

            document.getElementById('menu').insertAdjacentHTML('beforeend', html);
            parentIndex++;
        });

        // ADD CHILD
        document.addEventListener('click', function(e) {

            if (e.target.classList.contains('add-child')) {

                let parent = e.target.dataset.parent;
                let ul = e.target.previousElementSibling;

                let childIndex = ul.children.length;

                let html = `
        <li class="mb-2">

            <div class="d-flex gap-2">

                <input type="text"
                    name="menu_header[${parent}][children][${childIndex}][title]"
                    class="form-control form-control-sm"
                    placeholder="Child">

                <input type="text"
                    name="menu_header[${parent}][children][${childIndex}][link]"
                    class="form-control form-control-sm"
                    placeholder="/link">

                <button type="button" class="btn btn-sm btn-danger remove">X</button>

            </div>

        </li>`;

                ul.insertAdjacentHTML('beforeend', html);
            }

            // REMOVE ANY ITEM
            if (e.target.classList.contains('remove')) {
                e.target.closest('li').remove();
            }

        });
    </script>