{{-- Recursive formation tree node. Expects: $node, $byParent, $depth --}}
@php
    $children = $byParent[$node->id] ?? collect();
    $levelColor = ['portfolio'=>'primary','area'=>'info','division'=>'secondary','station'=>'success'][$node->level] ?? 'secondary';
    $childLevel = \App\Models\Formation::childLevel($node->level);
@endphp
<tr class="{{ $node->is_active ? '' : 'opacity-50' }}">
    <td>
        <span style="display:inline-block; width:{{ $depth * 22 }}px"></span>
        @if($children->isNotEmpty())<i class="ri-corner-down-right-line text-muted"></i>@endif
        <span class="badge bg-{{ $levelColor }}-subtle text-{{ $levelColor }} me-1">{{ $node->level_label }}</span>
        <span class="fw-{{ $node->level === 'portfolio' ? 'bold' : ($node->level === 'area' ? 'semibold' : 'normal') }}">{{ $node->name }}</span>
        @if($node->code)<small class="text-muted">({{ $node->code }})</small>@endif
        @if($node->users_count)<span class="badge bg-light text-muted ms-1">{{ $node->users_count }} ppl</span>@endif
        @unless($node->is_active)<span class="badge bg-danger-subtle text-danger ms-1">Inactive</span>@endunless
    </td>
    <td class="text-end text-nowrap">
        @if($childLevel)
            <a href="{{ route('admin.formations.create', ['level' => $childLevel, 'parent' => $node->id]) }}" class="btn btn-sm btn-soft-secondary py-0" title="Add {{ \App\Models\Formation::LEVELS[$childLevel] }}">+ {{ \App\Models\Formation::LEVELS[$childLevel] }}</a>
        @endif
        <a href="{{ route('admin.formations.edit', $node) }}" class="btn btn-sm btn-soft-primary py-0">Edit</a>
        <form method="POST" action="{{ route('admin.formations.toggle', $node) }}" class="d-inline">@csrf
            <button class="btn btn-sm btn-soft-{{ $node->is_active ? 'danger' : 'success' }} py-0">{{ $node->is_active ? 'Off' : 'On' }}</button>
        </form>
    </td>
</tr>
@foreach($children as $child)
    @include('admin.formations._node', ['node' => $child, 'byParent' => $byParent, 'depth' => $depth + 1])
@endforeach