@php
    use App\Helpers\PC\AmountMillionHelper;
    use App\Services\ReportPreviewPresenter as ReportPercentDisplay;

    $fpPrefix = 'report.part_a.financial_progress';
    $fundingAmountKeys = ['funding_gos_amount', 'funding_gop_amount', 'funding_fpa_amount'];
    $costAutoTotalPrefixes = ['approved_cost', 'revised_cost', 'unit_cost'];
    $fpName = 'report[part_a][financial_progress]';
    $pa4 = array_merge([
        'funding_gos_share' => '',
        'funding_gop_share' => '',
        'funding_fpa_share' => '',
        'funding_gos_amount' => '',
        'funding_gop_amount' => '',
        'funding_fpa_amount' => '',
        'funding_fields_readonly' => false,
        'approved_capital' => '',
        'approved_revenue' => '',
        'approved_total' => '',
        'approved_fields_readonly' => false,
        'revised_capital' => '',
        'revised_revenue' => '',
        'revised_total' => '',
        'revised_fields_readonly' => false,
        'overall_progress_auto' => false,
        'overall_progress_baseline_total' => '',
    ], $reportPartA4FinancialPrefill ?? []);

    $pA4Payload = $reportPayload ?? report_wizard_payload_array(is_array($report ?? null) ? $report : null);

    $fpYearCols = \App\Support\PlanSchemeAdpDisplay::mecReportFinancialProgressYearColumns();
    $yearColumns = array_merge($fpYearCols, [
        ['suffix' => 'total', 'head' => 'TOTAL', 'chart_head' => 'TOTAL'],
    ]);

    $timelineRows = [
        ['label' => 'Allocation', 'prefix' => 'allocation'],
        ['label' => 'Releases (as per F.D. Data)', 'prefix' => 'releases'],
        ['label' => 'Expenditure (as per F.D/E.A Data)', 'prefix' => 'expenditure'],
    ];

    $tripleBlocks = [
        [
            'label' => 'Funding Agency Share (%)',
            'readonly' => false,
            'fields' => [
                ['key' => 'funding_gos_share', 'sub' => 'GoS Share %', 'prefill' => $pa4['funding_gos_share']],
                ['key' => 'funding_gop_share', 'sub' => 'GoP Share %', 'prefill' => $pa4['funding_gop_share']],
                ['key' => 'funding_fpa_share', 'sub' => 'FPA Share %', 'prefill' => $pa4['funding_fpa_share']],
            ],
        ],
        [
            'label' => 'Funding Source Amount (M)',
            'readonly' => false,
            'fields' => [
                ['key' => 'funding_gos_amount', 'sub' => 'GoS Amount', 'prefill' => $pa4['funding_gos_amount']],
                ['key' => 'funding_gop_amount', 'sub' => 'GoP Amount', 'prefill' => $pa4['funding_gop_amount']],
                ['key' => 'funding_fpa_amount', 'sub' => 'FPA Amount', 'prefill' => $pa4['funding_fpa_amount']],
            ],
        ],
        [
            'label' => 'Approved Cost of the Scheme (M)',
            'readonly' => $pa4['approved_fields_readonly'],
            'fields' => [
                ['key' => 'approved_cost_capital', 'sub' => 'Capital', 'prefill' => $pa4['approved_capital']],
                ['key' => 'approved_cost_revenue', 'sub' => 'Revenue', 'prefill' => $pa4['approved_revenue']],
                ['key' => 'approved_cost_total', 'sub' => 'Total', 'prefill' => $pa4['approved_total']],
            ],
        ],
        [
            'label' => 'Revised Cost of the Scheme (if any)',
            'readonly' => $pa4['revised_fields_readonly'],
            'fields' => [
                ['key' => 'revised_cost_capital', 'sub' => 'Capital', 'prefill' => $pa4['revised_capital']],
                ['key' => 'revised_cost_revenue', 'sub' => 'Revenue', 'prefill' => $pa4['revised_revenue']],
                ['key' => 'revised_cost_total', 'sub' => 'Total', 'prefill' => $pa4['revised_total']],
            ],
        ],
        [
            'label' => 'Units Cost within the Scheme (if applicable)',
            'readonly' => false,
            'fields' => [
                ['key' => 'unit_cost_capital', 'sub' => 'Capital', 'prefill' => ''],
                ['key' => 'unit_cost_revenue', 'sub' => 'Revenue', 'prefill' => ''],
                ['key' => 'unit_cost_total', 'sub' => 'Total', 'prefill' => ''],
            ],
        ],
    ];
@endphp
{{-- Part A §4 — Financial Progress FP (PKR million); title from collapsible only --}}
<div
    id="report-a4-financial-root"
    class="report-pa-field-table"
    data-fp-baseline="{{ e($pa4['overall_progress_baseline_total']) }}"
    data-fp-overall-auto="1"
    data-fp-year-suffixes='@json(array_column($fpYearCols, 'suffix'))'
    data-fp-year-labels='@json(array_column($fpYearCols, 'chart_head'))'
>
    <div class="table-responsive">
        <table class="table report-proc-table mb-0">
            <tbody>
                @foreach ($tripleBlocks as $block)
                    <tr>
                        <th scope="row" class="report-proc-label align-top">{{ $block['label'] }}</th>
                        <td class="report-proc-cell" colspan="5">
                            <div class="form-row mx-n1">
                                @foreach ($block['fields'] as $field)
                                    @php
                                        $dotKey = $fpPrefix.'.'.$field['key'];
                                        $ro = $block['readonly'];
                                        $rawDisp = report_wizard_old('part_a.financial_progress.'.$field['key'], $field['prefill'] ?? '', $pA4Payload);
                                        $rawDisp = is_scalar($rawDisp) ? (string) $rawDisp : '';
                                        $disp = in_array($field['key'], $fundingAmountKeys, true)
                                            ? AmountMillionHelper::reportFundingAmountMillionDisplay($rawDisp)
                                            : (str_ends_with($field['key'], '_share')
                                                ? ReportPercentDisplay::reportPercentInputDisplay($rawDisp)
                                                : $rawDisp);
                                        $fundingAgency = '';
                                        if (str_starts_with($field['key'], 'funding_') && str_ends_with($field['key'], '_share')) {
                                            $fundingAgency = substr($field['key'], 8, -6);
                                        } elseif (in_array($field['key'], $fundingAmountKeys, true)) {
                                            $fundingAgency = substr($field['key'], 8, -7);
                                        }
                                        $fpInputClass = 'form-control form-control-sm pms-report-numeric-field';
                                        if ($fundingAgency !== '') {
                                            $fpInputClass .= str_ends_with($field['key'], '_share')
                                                ? ' report-a4-funding-share'
                                                : ' report-a4-funding-amount';
                                        }
                                        $costGroup = '';
                                        foreach ($costAutoTotalPrefixes as $costPrefix) {
                                            if (str_starts_with($field['key'], $costPrefix.'_')) {
                                                $costGroup = $costPrefix;
                                                break;
                                            }
                                        }
                                        $isCostTotal = $costGroup !== '' && str_ends_with($field['key'], '_total');
                                        $isCostPart = $costGroup !== '' && ! $isCostTotal;
                                        if ($isCostPart) {
                                            $fpInputClass .= ' report-a4-cost-part';
                                        }
                                        if ($isCostTotal) {
                                            $fpInputClass .= ' report-a4-cost-total report-a1-identity-readonly';
                                        }
                                    @endphp
                                    <div class="col-md-4 px-1 mb-2 mb-md-0">
                                        <label class="report-pa-subfield-label mb-1" for="report_fp_{{ $field['key'] }}">{{ $field['sub'] }}</label>
                                        @if ($ro)
                                            <input
                                                type="number"
                                                step="any"
                                                min="0"
                                                inputmode="decimal"
                                                id="report_fp_{{ $field['key'] }}"
                                                value="{{ e($disp) }}"
                                                disabled
                                                class="{{ $fpInputClass }} report-a1-identity-readonly @error($dotKey) is-invalid @enderror"
                                                @if ($fundingAgency !== '') data-funding-agency="{{ $fundingAgency }}" @endif
                                                @if ($costGroup !== '') data-cost-prefix="{{ $costGroup }}" @endif
                                                autocomplete="off"
                                            >
                                            <input type="hidden" name="{{ $fpName }}[{{ $field['key'] }}]" value="{{ e($disp) }}">
                                        @else
                                            <input
                                                type="number"
                                                step="any"
                                                min="0"
                                                inputmode="decimal"
                                                name="{{ $fpName }}[{{ $field['key'] }}]"
                                                id="report_fp_{{ $field['key'] }}"
                                                value="{{ e($disp) }}"
                                                class="{{ $fpInputClass }} @error($dotKey) is-invalid @enderror"
                                                @if ($fundingAgency !== '') data-funding-agency="{{ $fundingAgency }}" @endif
                                                @if ($costGroup !== '') data-cost-prefix="{{ $costGroup }}" @endif
                                                @if ($isCostTotal) readonly @endif
                                                autocomplete="off"
                                            >
                                        @endif
                                        @error($dotKey)
                                            <span class="invalid-feedback d-block">{{ $message }}</span>
                                        @enderror
                                    </div>
                                @endforeach
                            </div>
                        </td>
                    </tr>
                @endforeach

                <tr>
                    <td colspan="6" class="report-fp-timeline-wrap p-0">
                        <div class="table-responsive">
                            <table class="table report-fp-nested mb-0">
                                <thead>
                                    <tr>
                                        <th colspan="7" class="report-fp-nested-banner text-center">Financial Progress (Up to 5 Years) of Scheme</th>
                                    </tr>
                                    <tr>
                                        <th class="report-fp-nested-corner"></th>
                                        @foreach ($yearColumns as $yc)
                                            <th class="report-fp-year-head text-center">{{ $yc['head'] }}</th>
                                        @endforeach
                                    </tr>
                                </thead>
                                <tbody>
                                    @foreach ($timelineRows as $tRow)
                                        <tr>
                                            <th scope="row" class="report-proc-label">{{ $tRow['label'] }}</th>
                                            @foreach ($yearColumns as $yc)
                                                @php
                                                    $cellKey = $tRow['prefix'].'_'.$yc['suffix'];
                                                    $dotKey = $fpPrefix.'.'.$cellKey;
                                                    $cellVal = report_wizard_old('part_a.financial_progress.'.$cellKey, '', $pA4Payload);
                                                    $cellVal = is_scalar($cellVal) ? (string) $cellVal : '';
                                                    $isTotalCol = $yc['suffix'] === 'total';
                                                @endphp
                                                <td class="report-fp-nested-cell">
                                                    @if ($isTotalCol)
                                                        <input
                                                            type="number"
                                                            step="any"
                                                            min="0"
                                                            inputmode="decimal"
                                                            name="{{ $fpName }}[{{ $cellKey }}]"
                                                            class="form-control form-control-sm report-a4-fp-total report-a1-identity-readonly pms-report-numeric-field @error($dotKey) is-invalid @enderror"
                                                            value="{{ e($cellVal) }}"
                                                            readonly
                                                            autocomplete="off"
                                                            id="report_fp_{{ $cellKey }}"
                                                            aria-label="{{ $tRow['label'] }} total"
                                                        >
                                                    @else
                                                        <input
                                                            type="number"
                                                            step="any"
                                                            min="0"
                                                            inputmode="decimal"
                                                            name="{{ $fpName }}[{{ $cellKey }}]"
                                                            class="form-control form-control-sm report-a4-fp-year-part pms-report-numeric-field @error($dotKey) is-invalid @enderror"
                                                            value="{{ e($cellVal) }}"
                                                            autocomplete="off"
                                                            id="report_fp_{{ $cellKey }}"
                                                            data-fp-row="{{ $tRow['prefix'] }}"
                                                        >
                                                    @endif
                                                    @error($dotKey)
                                                        <span class="invalid-feedback d-block">{{ $message }}</span>
                                                    @enderror
                                                </td>
                                            @endforeach
                                        </tr>
                                    @endforeach
                                </tbody>
                            </table>
                        </div>
                    </td>
                </tr>

                <tr>
                    <th scope="row" class="report-proc-label">Overall Financial Progress in %</th>
                    <td class="report-proc-cell">
                        @php
                            $overallDot = $fpPrefix.'.overall_fp_pct';
                            $overallVal = ReportPercentDisplay::reportPercentInputDisplay(
                                report_wizard_old('part_a.financial_progress.overall_fp_pct', '', $pA4Payload)
                            );
                        @endphp
                        <input
                            type="number"
                            step="any"
                            id="report_fp_overall_pct"
                            value="{{ e($overallVal) }}"
                            readonly
                            class="form-control form-control-sm report-a1-identity-readonly report-a4-overall-fp @error($overallDot) is-invalid @enderror"
                            autocomplete="off"
                            name="{{ $fpName }}[overall_fp_pct]"
                            title="{{ __('Calculated: Expenditure total ÷ scheme cost (Units Cost total when entered, else revised if any, otherwise approved) × 100') }}"
                        >
                        @error($overallDot)
                            <span class="invalid-feedback d-block">{{ $message }}</span>
                        @enderror
                    </td>
                    <th scope="row" class="report-proc-label">Overall PP %</th>
                    <td class="report-proc-cell">
                        @php
                            $ppDot = $fpPrefix.'.overall_physical_pct';
                            $ppVal = ReportPercentDisplay::reportPercentInputDisplay(
                                report_wizard_old('part_a.financial_progress.overall_physical_pct', '', $pA4Payload)
                            );
                        @endphp
                        <input
                            type="number"
                            step="any"
                            name="{{ $fpName }}[overall_physical_pct]"
                            class="form-control form-control-sm report-a4-overall-pp @error($ppDot) is-invalid @enderror"
                            value="{{ e($ppVal) }}"
                            autocomplete="off"
                            id="report_fp_overall_physical_pct"
                            placeholder="%"
                            title="Overall physical progress % for §5 chart and FP variance vs PP"
                        >
                        @error($ppDot)
                            <span class="invalid-feedback d-block">{{ $message }}</span>
                        @enderror
                    </td>
                    <th scope="row" class="report-proc-label">FP variance vs PP</th>
                    <td class="report-proc-cell">
                        @php
                            $varDot = $fpPrefix.'.fp_variance_vs_pp';
                            $varVal = ReportPercentDisplay::reportPercentInputDisplay(
                                report_wizard_old('part_a.financial_progress.fp_variance_vs_pp', '', $pA4Payload)
                            );
                        @endphp
                        {{-- Auto: Overall PP % − Overall FP % (§4). Readonly; JS syncs when §4 overall inputs change. --}}
                        <input
                            type="number"
                            step="any"
                            name="{{ $fpName }}[fp_variance_vs_pp]"
                            class="form-control form-control-sm report-a1-identity-readonly @error($varDot) is-invalid @enderror"
                            value="{{ e($varVal) }}"
                            readonly
                            autocomplete="off"
                            id="report_fp_variance_pp"
                            title="Overall PP % minus Overall Financial Progress %"
                        >
                        @error($varDot)
                            <span class="invalid-feedback d-block">{{ $message }}</span>
                        @enderror
                    </td>
                </tr>
            </tbody>
        </table>
    </div>
</div>

@push('scripts')
<script>
(function () {
    var root = document.getElementById('report-a4-financial-root');
    if (!root) return;

    var overallEl = document.getElementById('report_fp_overall_pct');

    var rowPrefixes = ['allocation', 'releases', 'expenditure'];
    var yearSuffixes = @json(array_column($fpYearCols, 'suffix'));
    if (!Array.isArray(yearSuffixes) || !yearSuffixes.length) {
        yearSuffixes = [];
    } else {
        yearSuffixes = yearSuffixes.map(String);
    }

    function parseNum(v) {
        if (v === undefined || v === null) return NaN;
        var s = String(v).replace(/,/g, '').trim();
        if (s === '') return NaN;
        var n = parseFloat(s);
        return isNaN(n) ? NaN : n;
    }

    function fmtDecimal(n) {
        if (isNaN(n) || !isFinite(n)) return '';
        var t = Number(n.toFixed(10));
        var s = String(t);
        if (s.indexOf('e') !== -1) return String(n);
        if (s.indexOf('.') !== -1) {
            s = s.replace(/\.?0+$/, '');
        }
        return s;
    }

    function fmtPct(n) {
        if (typeof window.pmsFormatReportPercent === 'function') {
            return window.pmsFormatReportPercent(n);
        }
        if (isNaN(n) || !isFinite(n)) return '';
        var s = Number(n.toFixed(10)).toString();
        if (s.indexOf('.') !== -1) {
            s = s.replace(/\.?0+$/, '');
        }
        return s === '' ? '0' : s;
    }

    function recalcRowTotal(prefix) {
        var totEl = document.getElementById('report_fp_' + prefix + '_total');
        if (!totEl) return;

        var sum = 0;
        var hasAny = false;
        yearSuffixes.forEach(function (suf) {
            var el = document.getElementById('report_fp_' + prefix + '_' + suf);
            if (!el) return;
            if (String(el.value).trim() !== '') {
                hasAny = true;
            }
            var n = parseNum(el.value);
            if (!isNaN(n)) {
                sum += n;
            }
        });

        if (!hasAny) {
            totEl.value = '';
        } else {
            totEl.value = fmtDecimal(sum);
        }
    }

    function recalcAllRowTotals() {
        rowPrefixes.forEach(recalcRowTotal);
    }

    var costTotalPrefixes = ['approved_cost', 'revised_cost', 'unit_cost'];

    function recalcCostTotal(prefix) {
        var capEl = document.getElementById('report_fp_' + prefix + '_capital');
        var revEl = document.getElementById('report_fp_' + prefix + '_revenue');
        var totEl = document.getElementById('report_fp_' + prefix + '_total');
        if (!totEl || totEl.disabled) return;

        // Totals stay calculated / non-editable (draft reopen must not unlock them).
        if (!totEl.readOnly) {
            totEl.readOnly = true;
            totEl.classList.add('report-a1-identity-readonly');
        }

        var capEmpty = !capEl || String(capEl.value).trim() === '';
        var revEmpty = !revEl || String(revEl.value).trim() === '';
        if (capEmpty && revEmpty) {
            totEl.value = '';
            return;
        }

        var cap = capEl ? parseNum(capEl.value) : 0;
        var rev = revEl ? parseNum(revEl.value) : 0;
        var sum = (isNaN(cap) ? 0 : cap) + (isNaN(rev) ? 0 : rev);
        totEl.value = fmtDecimal(sum);
    }

    function recalcAllCostTotals() {
        costTotalPrefixes.forEach(recalcCostTotal);
    }

    function onCostPartChange(ev) {
        var el = ev.target;
        if (!el || !el.classList.contains('report-a4-cost-part')) return;
        var prefix = el.getAttribute('data-cost-prefix');
        if (!prefix) return;
        recalcCostTotal(prefix);
        if (prefix === 'approved_cost' || prefix === 'revised_cost' || prefix === 'unit_cost') {
            recalcOverall();
            if (prefix === 'approved_cost') {
                recalcAllFundingAmountsFromShares();
            }
        }
    }

    /** Stored scheme cost may be full PKR (prefill) or millions; timeline rows and funding amounts use (M). */
    function toApprovedCostMillion(n) {
        if (isNaN(n) || n <= 0) return NaN;
        if (n >= 100000) return n / 1000000;
        return n;
    }

    function approvedSchemeTotalMillion() {
        var totEl = document.getElementById('report_fp_approved_cost_total');
        var capEl = document.getElementById('report_fp_approved_cost_capital');
        var revEl = document.getElementById('report_fp_approved_cost_revenue');
        var tot = totEl ? parseNum(totEl.value) : NaN;
        if (!isNaN(tot) && tot > 0) return toApprovedCostMillion(tot);
        var cap = capEl ? parseNum(capEl.value) : 0;
        var rev = revEl ? parseNum(revEl.value) : 0;
        var sum = (!isNaN(cap) ? cap : 0) + (!isNaN(rev) ? rev : 0);
        if (sum > 0) return toApprovedCostMillion(sum);
        var b = parseNum(root.getAttribute('data-fp-baseline'));
        if (!isNaN(b) && b > 0) return toApprovedCostMillion(b);
        return NaN;
    }

    function fundingField(agency, kind) {
        return document.getElementById('report_fp_funding_' + agency + '_' + kind);
    }

    function fmtFundingAmount(n) {
        if (isNaN(n) || !isFinite(n)) return '';
        return Number(n.toFixed(4)).toFixed(4);
    }

    var fundingSyncLock = false;
    var fundingAgencies = ['gos', 'gop', 'fpa'];

    function syncFundingAmountFromShare(agency) {
        if (fundingSyncLock) return;
        var totalM = approvedSchemeTotalMillion();
        if (isNaN(totalM) || totalM <= 0) return;
        var shareEl = fundingField(agency, 'share');
        var amtEl = fundingField(agency, 'amount');
        if (!shareEl || !amtEl || shareEl.disabled || amtEl.disabled) return;
        var pct = parseNum(shareEl.value);
        if (isNaN(pct)) {
            if (String(shareEl.value).trim() === '') {
                fundingSyncLock = true;
                amtEl.value = '';
                fundingSyncLock = false;
            }
            return;
        }
        fundingSyncLock = true;
        amtEl.value = fmtFundingAmount(totalM * pct / 100);
        fundingSyncLock = false;
    }

    function syncFundingShareFromAmount(agency) {
        if (fundingSyncLock) return;
        var totalM = approvedSchemeTotalMillion();
        if (isNaN(totalM) || totalM <= 0) return;
        var shareEl = fundingField(agency, 'share');
        var amtEl = fundingField(agency, 'amount');
        if (!shareEl || !amtEl || shareEl.disabled || amtEl.disabled) return;
        var amt = parseNum(amtEl.value);
        if (isNaN(amt)) {
            if (String(amtEl.value).trim() === '') {
                fundingSyncLock = true;
                shareEl.value = '';
                fundingSyncLock = false;
            }
            return;
        }
        fundingSyncLock = true;
        shareEl.value = fmtPct(100 * amt / totalM);
        fundingSyncLock = false;
    }

    function recalcAllFundingAmountsFromShares() {
        fundingAgencies.forEach(syncFundingAmountFromShare);
    }

    function onFundingShareChange(ev) {
        var el = ev.target;
        if (!el || !el.classList.contains('report-a4-funding-share')) return;
        var agency = el.getAttribute('data-funding-agency');
        if (!agency) return;
        syncFundingAmountFromShare(agency);
    }

    function onFundingAmountChange(ev) {
        var el = ev.target;
        if (!el || !el.classList.contains('report-a4-funding-amount')) return;
        var agency = el.getAttribute('data-funding-agency');
        if (!agency) return;
        syncFundingShareFromAmount(agency);
    }

    function costGroupTotalMillion(prefix) {
        var totEl = document.getElementById('report_fp_' + prefix + '_total');
        var capEl = document.getElementById('report_fp_' + prefix + '_capital');
        var revEl = document.getElementById('report_fp_' + prefix + '_revenue');
        var tot = totEl ? parseNum(totEl.value) : NaN;
        if (!isNaN(tot) && tot > 0) {
            return toApprovedCostMillion(tot);
        }
        var cap = capEl ? parseNum(capEl.value) : 0;
        var rev = revEl ? parseNum(revEl.value) : 0;
        var sum = (!isNaN(cap) ? cap : 0) + (!isNaN(rev) ? rev : 0);
        return sum > 0 ? toApprovedCostMillion(sum) : NaN;
    }

    function hasRevisedCostEntered() {
        var totEl = document.getElementById('report_fp_revised_cost_total');
        var capEl = document.getElementById('report_fp_revised_cost_capital');
        var revEl = document.getElementById('report_fp_revised_cost_revenue');
        if (totEl && String(totEl.value).trim() !== '') {
            var t = parseNum(totEl.value);
            if (!isNaN(t) && t > 0) {
                return true;
            }
        }
        var cap = capEl ? parseNum(capEl.value) : NaN;
        var rev = revEl ? parseNum(revEl.value) : NaN;
        return (!isNaN(cap) && cap > 0) || (!isNaN(rev) && rev > 0);
    }

    function hasUnitCostTotalEntered() {
        var totEl = document.getElementById('report_fp_unit_cost_total');
        if (totEl && String(totEl.value).trim() !== '') {
            var t = parseNum(totEl.value);
            if (!isNaN(t) && t > 0) {
                return true;
            }
        }
        return false;
    }

    /**
     * Denominator for Overall FP %:
     * 1) Units Cost total when that total is entered
     * 2) else revised scheme cost when any revised cost is present
     * 3) else approved cost
     */
    function schemeCostDenominatorMillion() {
        if (hasUnitCostTotalEntered()) {
            var unitM = costGroupTotalMillion('unit_cost');
            if (!isNaN(unitM) && unitM > 0) {
                return unitM;
            }
        }
        if (hasRevisedCostEntered()) {
            var revisedM = costGroupTotalMillion('revised_cost');
            if (!isNaN(revisedM) && revisedM > 0) {
                return revisedM;
            }
        }
        return costGroupTotalMillion('approved_cost');
    }

    /** Overall Financial Progress % = Expenditure (F.D/E.A) total ÷ scheme cost (M) × 100 — allocation/releases excluded. */
    function computeOverallFpPct() {
        var denom = schemeCostDenominatorMillion();
        if (isNaN(denom) || denom <= 0) {
            return NaN;
        }
        var expEl = document.getElementById('report_fp_expenditure_total');
        if (!expEl || String(expEl.value).trim() === '') {
            return NaN;
        }
        var exp = parseNum(expEl.value);
        if (isNaN(exp)) {
            return NaN;
        }
        return 100 * exp / denom;
    }

    function recalcOverall() {
        if (!overallEl) {
            recalcFpVariance();
            return;
        }
        var v = computeOverallFpPct();
        overallEl.value = isNaN(v) ? '' : fmtPct(v);
        recalcFpVariance();
    }

    /** Overall PP % from §4 (`#report_fp_overall_physical_pct`). */
    function overallPpFromA4() {
        var el = document.getElementById('report_fp_overall_physical_pct');
        if (!el) return NaN;
        return parseNum(el.value);
    }

    /** Overall FP % for variance (always matches computed expenditure ÷ scheme cost). */
    function effectiveOverallFpPctForVariance() {
        return computeOverallFpPct();
    }

    /** FP variance vs PP = Overall PP % − Overall Financial Progress % (§4). */
    function recalcFpVariance() {
        var varEl = document.getElementById('report_fp_variance_pp');
        if (!varEl) return;
        var fp = effectiveOverallFpPctForVariance();
        var pp = overallPpFromA4();
        if (isNaN(fp) || isNaN(pp)) {
            varEl.value = '';
            return;
        }
        varEl.value = fmtPct(pp - fp);
    }

    function onYearPartChange(ev) {
        var el = ev.target;
        var prefix = el.getAttribute('data-fp-row');
        if (prefix) {
            recalcRowTotal(prefix);
            if (prefix === 'expenditure') {
                recalcOverall();
            }
        }
    }

    function onVarianceDriver(ev) {
        var t = ev.target;
        if (!t || !t.classList) return;
        if (t.id === 'report_fp_overall_physical_pct') {
            recalcFpVariance();
        }
    }

    root.querySelectorAll('.report-a4-fp-year-part').forEach(function (el) {
        el.addEventListener('input', onYearPartChange);
        el.addEventListener('change', onYearPartChange);
    });

    root.querySelectorAll('.report-a4-cost-part').forEach(function (el) {
        el.addEventListener('input', onCostPartChange);
        el.addEventListener('change', onCostPartChange);
    });

    root.querySelectorAll('.report-a4-funding-share').forEach(function (el) {
        el.addEventListener('input', onFundingShareChange);
        el.addEventListener('change', onFundingShareChange);
        el.addEventListener('blur', function () {
            if (window.pmsNormalizeReportPercentInput) {
                window.pmsNormalizeReportPercentInput(el);
            }
        });
    });
    root.querySelectorAll('.report-a4-overall-pp').forEach(function (el) {
        el.addEventListener('blur', function () {
            if (window.pmsNormalizeReportPercentInput) {
                window.pmsNormalizeReportPercentInput(el);
            }
            recalcFpVariance();
        });
    });
    root.querySelectorAll('.report-a4-funding-amount').forEach(function (el) {
        el.addEventListener('input', onFundingAmountChange);
        el.addEventListener('change', onFundingAmountChange);
    });
    ['approved_cost_capital', 'approved_cost_revenue', 'approved_cost_total', 'revised_cost_capital', 'revised_cost_revenue', 'revised_cost_total', 'unit_cost_capital', 'unit_cost_revenue', 'unit_cost_total'].forEach(function (id) {
        var el = document.getElementById('report_fp_' + id);
        if (!el || el.disabled) return;
        var handler = function () {
            if (id.indexOf('approved_cost') === 0) {
                recalcAllFundingAmountsFromShares();
            }
            recalcOverall();
        };
        el.addEventListener('input', handler);
        el.addEventListener('change', handler);
    });

    // Keep auto-total columns locked even if draft payload / browser state dropped readonly.
    root.querySelectorAll('.report-a4-cost-total, .report-a4-fp-total').forEach(function (el) {
        if (el.disabled) return;
        el.readOnly = true;
        el.classList.add('report-a1-identity-readonly');
    });

    document.addEventListener('input', onVarianceDriver);
    document.addEventListener('change', onVarianceDriver);

    recalcAllRowTotals();
    recalcAllCostTotals();
    recalcOverall();
    recalcFpVariance();
    root.querySelectorAll('.report-a4-funding-share, .report-a4-overall-pp').forEach(function (el) {
        if (window.pmsNormalizeReportPercentInput && String(el.value).trim() !== '') {
            window.pmsNormalizeReportPercentInput(el);
        }
    });
})();
</script>
@endpush