foreach ($filteredTariffs as $t) {
            $startTs = intval($t['start_ts']);
            $endTs   = intval($t['end_ts']);
            if ($startTs === 0 || $endTs === 0) continue;

            if ($startTs <= $currentStart && $currentStart <= $endTs) {
                $activeTariff = $t;
                IPS_LogMessage('Abrechnung', sprintf(
                    "   ✅ Tarif erkannt: %.2f Rp gültig %s → %s",
                    floatval($t['price']),
                    date('d.m.Y H:i', $startTs),
                    date('d.m.Y H:i', $endTs)
                ));
                break;
            }
        }

        // 🔹 Falls kein aktiver Tarif → 0 Rp
        if (!$activeTariff) {
            IPS_LogMessage('Abrechnung', "⚠ Kein Tarif aktiv bei " . date('d.m.Y H:i', $currentStart) . " → 0 Rp");
            $activeTariff = [
                'start_ts' => $currentStart,
                'end_ts'   => $to,
                'price'    => 0.0,
                'unit_type'=> $type
            ];
        }

        $tariffEnd   = intval($activeTariff['end_ts']);
        $tariffPrice = floatval($activeTariff['price']);
        $tariffLabel = number_format($tariffPrice, 2, ',', '');

        // 🔹 Start- & Endwerte aus Archiv
        $startValue = $this->GetValueAt($varId, $currentStart, true);
        if ($startValue === null) {
            IPS_LogMessage('Abrechnung', "⚠ Kein Startwert für " . date('d.m.Y H:i', $currentStart));
            break;
        }

        $segmentEnd = ($tariffEnd < $to) ? $tariffEnd : $to;
        $endValue = $this->GetValueAt($varId, $segmentEnd, true);
        if ($endValue === null) {
            IPS_LogMessage('Abrechnung', "⚠ Kein Endwert für " . date('d.m.Y H:i', $segmentEnd));
            break;
        }

        // 🔹 Verbrauch & Kosten
        $verbrauch = max(0, $endValue - $startValue);
        $kosten = round(($tariffPrice / 100) * $verbrauch, 2);
        $totalCost += $kosten;

        IPS_LogMessage('Abrechnung', sprintf(
            "   📊 Segment %d: %.3f → %.3f (Δ=%.3f) | Tarif=%.3f Rp | Kosten=%.2f CHF",
            $segmentIndex, $startValue, $endValue, $verbrauch, $tariffPrice, $kosten
        ));

        // 🔹 Tabellenzeile
        $rows .= "
        <tr>
            <td>{$meter['name']}</td>
            <td>{$type}</td>
            <td>" . date('d.m.Y H:i', $currentStart) . "</td>
            <td>" . date('d.m.Y H:i', $segmentEnd) . "</td>
            <td>" . number_format($startValue, 2) . "</td>
            <td>" . number_format($endValue, 2) . "</td>
            <td>" . number_format($verbrauch, 2) . "</td>
            <td>{$tariffLabel}</td>
            <td>" . number_format($kosten, 2) . "</td>
        </tr>";

        // 🔹 Neuen Startpunkt setzen (FIX: +1 Sekunde nach Tarifende)
        if ($tariffEnd < $to) {
            $currentStart = $tariffEnd + 1;
        } else {
            break;
        }

        $segmentIndex++;
    }

    // Fallback, falls keine Segmente erzeugt wurden
    if ($rows === '') {
        IPS_LogMessage('Abrechnung', "⚠ Keine Segmente erzeugt, Fallback auf Gesamtzeitraum");
        $startValue = $this->GetValueAt($varId, $from, false);
        $endValue   = $this->GetValueAt($varId, $to, true);
        $verbrauch = max(0, $endValue - $startValue);
        $rows = "
        <tr>
            <td>{$meter['name']}</td>
            <td>{$type}</td>
            <td>" . date('d.m.Y H:i', $from) . "</td>
            <td>" . date('d.m.Y H:i', $to) . "</td>
            <td>" . number_format($startValue, 2) . "</td>
            <td>" . number_format($endValue, 2) . "</td>
            <td>" . number_format($verbrauch, 2) . "</td>
            <td>0</td>
            <td>0.00</td>
        </tr>";
    }

    IPS_LogMessage('Abrechnung', sprintf("✅ [AddMeterToPDFRow] Fertig: %.2f CHF total, %d Segmente", $totalCost, $segmentIndex - 1));

    return ['row' => $rows, 'value' => $totalCost];
}

}