{{-- PHASE 3: INVESTIGATION & ROOT CAUSE --}}
@php $investigation = $deviation->investigations->last(); @endphp
<section class="phase-section" data-phase="3">

    <div class="card mb-3">
        <div class="card-header d-flex justify-content-between">
            <h4 class="mb-0">
                <span class="badge badge-info mr-1">3</span>
                Investigation Plan
            </h4>
            @if($investigation)
                <span class="badge badge-{{ match($investigation->status) {
                    'COMPLETED' => 'success',
                    'IN_PROGRESS' => 'info',
                    'DELAYED' => 'danger',
                    default => 'secondary',
                } }}">{{ $investigation->status }}</span>
            @endif
        </div>
        <div class="card-body">
            @if($investigation)
                <table class="table table-sm table-bordered">
                    <tr><th width="25%">Owner</th><td>{{ $investigation->owner?->name ?? '—' }}</td></tr>
                    <tr><th>Methodology</th><td><span class="badge badge-info">{{ $investigation->methodology }}</span></td></tr>
                    <tr><th>Start</th><td>{{ $investigation->start_date?->format('M j, Y') }}</td></tr>
                    <tr><th>Due</th><td>
                        {{ $investigation->due_date?->format('M j, Y') }}
                        @if($investigation->isOverdue())
                            <span class="badge badge-danger">OVERDUE</span>
                        @endif
                    </td></tr>
                    @if($investigation->actual_completion_date)
                        <tr><th>Completed</th><td>{{ $investigation->actual_completion_date->format('M j, Y') }}</td></tr>
                    @endif
                    <tr><th>Plan</th><td>{!! nl2br(e($investigation->investigation_plan)) !!}</td></tr>
                    <tr><th>Conclusion</th><td>{{ $investigation->conclusion ?? '—' }}</td></tr>
                    <tr><th>Root Cause Verified</th><td>
                        @if($investigation->root_cause_verified)
                            <span class="badge badge-success">✓ Verified</span>
                            by {{ $investigation->verifier?->name }}
                            on {{ $investigation->root_cause_verified_at?->format('M j, Y') }}
                        @else
                            <span class="badge badge-warning">Pending</span>
                        @endif
                    </td></tr>
                </table>

                @if($investigation->status !== 'COMPLETED')
                    <div class="d-flex flex-wrap">
                        <button class="btn btn-outline-primary btn-sm mr-2" data-toggle="modal" data-target="#editInvestigationModal">
                            <i class="fas fa-edit"></i> Edit
                        </button>
                        <button class="btn btn-success btn-sm" data-toggle="modal" data-target="#completeInvestigationModal">
                            <i class="fas fa-check"></i> Mark Complete
                        </button>
                    </div>
                @endif
            @else
                <div class="alert alert-warning">
                    No investigation plan created. Required for Gate 3.
                </div>
                <button class="btn btn-primary" data-toggle="modal" data-target="#newInvestigationModal">
                    <i class="fas fa-plus"></i> Create Investigation Plan
                </button>
            @endif
        </div>
    </div>

    @if($investigation)
        {{-- Findings --}}
        <div class="card mb-3">
            <div class="card-header d-flex justify-content-between">
                <h5 class="mb-0"><i class="fas fa-microscope"></i> Findings</h5>
                <button class="btn btn-sm btn-primary" data-toggle="modal" data-target="#addFindingModal">
                    <i class="fas fa-plus"></i> Add Finding
                </button>
            </div>
            <div class="card-body">
                @if($investigation->findings->isEmpty())
                    <div class="alert alert-info mb-0">No findings recorded yet.</div>
                @else
                    <table class="table table-sm table-bordered">
                        <thead class="thead-light">
                            <tr>
                                <th>Type</th>
                                <th>Description</th>
                                <th>Evidence</th>
                                <th>Root Cause?</th>
                                <th class="no-print">Actions</th>
                            </tr>
                        </thead>
                        <tbody>
                            @foreach($investigation->findings as $f)
                                <tr>
                                    <td><span class="badge badge-info">{{ str_replace('_', ' ', $f->finding_type) }}</span></td>
                                    <td>{{ Str::limit($f->finding_description, 100) }}</td>
                                    <td>{{ Str::limit($f->evidence_reference, 40) ?? '—' }}</td>
                                    <td>{!! $f->related_to_root_cause ? '<span class="badge badge-success">Yes</span>' : '<span class="badge badge-secondary">No</span>' !!}</td>
                                    <td class="no-print">
                                        <form method="POST"
                                              action="{{ route('deviations.findings.destroy', $f) }}"
                                              onsubmit="return confirm('Delete finding?')">
                                            @csrf @method('DELETE')
                                            <button class="btn btn-sm btn-danger"><i class="fas fa-trash"></i></button>
                                        </form>
                                    </td>
                                </tr>
                            @endforeach
                        </tbody>
                    </table>
                @endif
            </div>
        </div>

        {{-- Root Causes --}}
        <div class="card mb-3">
            <div class="card-header d-flex justify-content-between">
                <h5 class="mb-0"><i class="fas fa-bullseye"></i> Root Cause Analysis</h5>
                <button class="btn btn-sm btn-primary" data-toggle="modal" data-target="#addRootCauseModal">
                    <i class="fas fa-plus"></i> Add Root Cause
                </button>
            </div>
            <div class="card-body">
                @if($investigation->rootCauses->isEmpty())
                    <div class="alert alert-warning mb-0">
                        No root causes recorded. Confirmed root cause required for Gate 3.
                    </div>
                @else
                    @foreach($investigation->rootCauses as $rc)
                        <div class="card mb-3 border-{{ $rc->is_systemic ? 'danger' : 'secondary' }}">
                            <div class="card-header d-flex justify-content-between">
                                <strong>
                                    <i class="fas fa-bullseye"></i>
                                    {{ $rc->root_cause_type }}
                                    @if($rc->is_systemic)
                                        <span class="badge badge-danger">SYSTEMIC</span>
                                    @endif
                                </strong>
                                <div>
                                    <code>{{ $rc->rca_methodology_used ?? '—' }}</code>
                                    <span class="badge badge-secondary">v{{ $rc->verification_version }}</span>
                                </div>
                            </div>
                            <div class="card-body">
                                <p>{{ $rc->root_cause_description }}</p>

                                @if($rc->fiveWhys->isNotEmpty())
                                    <h6>5-Whys Chain:</h6>
                                    <ol>
                                        @foreach($rc->fiveWhys as $why)
                                            <li>
                                                <strong>Q:</strong> {{ $why->question }}<br>
                                                <strong>A:</strong> {{ $why->answer }}
                                            </li>
                                        @endforeach
                                    </ol>
                                @endif

                                <div class="mt-2 d-flex flex-wrap">
                                    @if($rc->confirmed_by)
                                        <span class="badge badge-success mr-2">
                                            ✓ Confirmed by {{ $rc->confirmer?->name }}
                                            on {{ $rc->confirmed_date?->format('M j, Y') }}
                                        </span>
                                    @else
                                        <form method="POST"
                                              action="{{ route('deviations.root-causes.confirm', $rc) }}"
                                              class="d-inline mr-2">
                                            @csrf
                                            <button class="btn btn-sm btn-success">
                                                <i class="fas fa-check"></i> Confirm Root Cause
                                            </button>
                                        </form>
                                    @endif
                                    <form method="POST"
                                          action="{{ route('deviations.root-causes.destroy', $rc) }}"
                                          class="d-inline"
                                          onsubmit="return confirm('Delete root cause?')">
                                        @csrf @method('DELETE')
                                        <button class="btn btn-sm btn-outline-danger">
                                            <i class="fas fa-trash"></i> Delete
                                        </button>
                                    </form>
                                </div>
                            </div>
                        </div>
                    @endforeach
                @endif
            </div>
        </div>
    @endif
</section>

{{-- Modals --}}
@include('deviations.partials.modals.investigation-modals', ['deviation' => $deviation, 'investigation' => $investigation])
@include('deviations.partials.modals.root-cause-modal', ['investigation' => $investigation])