@extends('layouts.app')
@section('title', 'Gehaltsrechner – Nettogehalt aus Brutto berechnen | kotsch.tech')
@section('meta_description', 'Gehaltsrechner: Nettolohn aus Bruttogehalt schnell berechnen. Steuerklasse, Kirchensteuer, Krankenversicherung – einfache Orientierung ohne Steuerberater.')
@section('meta_extra')
<meta name="keywords" content="Gehaltsrechner, Nettogehalt berechnen, Brutto Netto Rechner, Nettolohn, Steuerklasse Rechner, Gehalt berechnen, Lohnrechner">
@endsection
@section('content')
@include('tools._tool_base')
<style>
.net-big { font-size: clamp(2.4rem, 8vw, 3.5rem); font-weight: 900; letter-spacing: -2px; color: var(--accent); line-height: 1; }
.period-tabs { display: flex; gap: 0; border: 2px solid var(--line); border-radius: 12px; overflow: hidden; margin-bottom: 20px; width: fit-content; }
.period-tab { padding: 9px 20px; border: 0; background: transparent; font: inherit; font-weight: 700; font-size: 0.88rem; cursor: pointer; color: var(--muted); transition: all 0.15s; }
.period-tab.active { background: var(--ink); color: #fff; }
</style>

<div class="tool-page">
<div class="tool-container">
    <div class="tool-header">
        <span class="t-tag"><i class="fas fa-money-bill-wave"></i> Finanzen</span>
        <h1 class="tool-h1">Brutto<br><span>→ Netto.</span></h1>
        <p class="tool-sub">Schnelle Orientierung: Nettolohn schätzen nach Steuerklasse, Kirchensteuer und Sozialabgaben.</p>
    </div>

    <div class="t-panel">
        <div class="t-grid-2">
            <div class="t-field">
                <label class="t-label">Bruttogehalt (€ / Monat)</label>
                <input type="number" class="t-input" id="brutto" placeholder="z.B. 3500" value="3500" min="0" max="100000" oninput="calc()">
            </div>
            <div class="t-field">
                <label class="t-label">Steuerklasse</label>
                <select class="t-input t-select" id="klasse" onchange="calc()">
                    <option value="1">Klasse I – Ledig</option>
                    <option value="2">Klasse II – Alleinerziehend</option>
                    <option value="3">Klasse III – Verheiratet (höheres Gehalt)</option>
                    <option value="4">Klasse IV – Verheiratet (gleiches Gehalt)</option>
                    <option value="5">Klasse V – Verheiratet (niedrigeres Gehalt)</option>
                    <option value="6">Klasse VI – Zweitjob</option>
                </select>
            </div>
            <div class="t-field">
                <label class="t-label">Wöchentliche Arbeitsstunden</label>
                <input type="number" class="t-input" id="hours" placeholder="z.B. 40" value="40" min="1" max="80" oninput="calc()">
            </div>
            <div class="t-field" style="display:flex;align-items:center;gap:12px;padding-top:32px">
                <label style="font-weight:700;font-size:0.9rem;margin:0">Kirchensteuer</label>
                <input type="checkbox" id="kirche" class="t-check" onchange="calc()">
            </div>
        </div>
    </div>

    <div class="t-panel" id="res-panel">
        <div class="t-panel-title"><i class="fas fa-chart-bar"></i> Ergebnis</div>
        <div class="period-tabs">
            <button class="period-tab active" onclick="setPeriod('month',this)">Monat</button>
            <button class="period-tab" onclick="setPeriod('year',this)">Jahr</button>
            <button class="period-tab" onclick="setPeriod('hour',this)">Stunde</button>
        </div>
        <div style="text-align:center;margin-bottom:20px">
            <div class="net-big" id="net-display">–</div>
            <div class="t-result-lbl" id="net-period-lbl">Nettolohn / Monat</div>
        </div>
        <div class="t-row"><span class="t-row-lbl">Bruttogehalt</span><span class="t-row-val" id="r-brutto">–</span></div>
        <div class="t-row"><span class="t-row-lbl">Lohnsteuer (ca.)</span><span class="t-row-val" style="color:#ef4444" id="r-lst">–</span></div>
        <div class="t-row"><span class="t-row-lbl">Solidaritätszuschlag</span><span class="t-row-val" style="color:#ef4444" id="r-soli">–</span></div>
        <div class="t-row"><span class="t-row-lbl">Kirchensteuer</span><span class="t-row-val" style="color:#ef4444" id="r-kirche">–</span></div>
        <div class="t-row"><span class="t-row-lbl">Rentenversicherung (9,3%)</span><span class="t-row-val" style="color:#f97316" id="r-rv">–</span></div>
        <div class="t-row"><span class="t-row-lbl">Krankenversicherung (7,3%)</span><span class="t-row-val" style="color:#f97316" id="r-kv">–</span></div>
        <div class="t-row"><span class="t-row-lbl">Pflegeversicherung (1,7%)</span><span class="t-row-val" style="color:#f97316" id="r-pv">–</span></div>
        <div class="t-row"><span class="t-row-lbl">Arbeitslosenversicherung (1,3%)</span><span class="t-row-val" style="color:#f97316" id="r-av">–</span></div>
        <div class="t-row" style="margin-top:8px;padding-top:14px;border-top:2px solid var(--line)">
            <span style="font-weight:900">Nettogehalt (ca.)</span>
            <span style="font-weight:900;font-size:1.1rem;color:var(--accent)" id="r-netto">–</span>
        </div>
        <p class="t-disclaimer">⚠ Schätzwert ohne Gewähr. Keine Steuer-, Rechts- oder Finanzberatung. Freibetraege, Zusatzbeitraege, Bundesland, Sonderfaelle und Gesetzesaenderungen koennen stark abweichen.</p>
    </div>
</div>
@include('tools._ads_banner')
</div>

<script>
const eur = n => n.toLocaleString('de-DE', {style:'currency',currency:'EUR'});
const taxRates = {1:0.22, 2:0.19, 3:0.14, 4:0.22, 5:0.30, 6:0.38};
let cachedNetto = 0, cachedBrutto = 0, cachedHours = 40;
let currentPeriod = 'month';
function setPeriod(p, btn) {
    currentPeriod = p;
    document.querySelectorAll('.period-tab').forEach(b => b.classList.remove('active'));
    btn.classList.add('active');
    showPeriod();
}
function showPeriod() {
    const labels = {month: 'Nettolohn / Monat', year: 'Nettolohn / Jahr', hour: 'Nettolohn / Stunde'};
    let val;
    if (currentPeriod === 'month') val = eur(cachedNetto);
    else if (currentPeriod === 'year') val = eur(cachedNetto * 12);
    else { const hoursPerMonth = cachedHours * (52 / 12); val = eur(cachedNetto / hoursPerMonth); }
    document.getElementById('net-display').textContent   = val;
    document.getElementById('net-period-lbl').textContent = labels[currentPeriod];
}
function calc() {
    const brutto = parseFloat(document.getElementById('brutto').value) || 0;
    const klasse = parseInt(document.getElementById('klasse').value);
    const kirche = document.getElementById('kirche').checked;
    cachedHours  = parseFloat(document.getElementById('hours').value) || 40;
    cachedBrutto = brutto;
    const lstRate   = taxRates[klasse] || 0.22;
    const lst       = brutto * lstRate;
    const soli      = lst > 1200 ? lst * 0.055 : 0;
    const kircheSt  = kirche ? lst * 0.09 : 0;
    const rv = brutto * 0.093, kv = brutto * 0.073, pv = brutto * 0.017, av = brutto * 0.013;
    const netto = Math.max(0, brutto - lst - soli - kircheSt - rv - kv - pv - av);
    cachedNetto = netto;
    document.getElementById('r-brutto').textContent  = eur(brutto);
    document.getElementById('r-lst').textContent     = '− ' + eur(lst);
    document.getElementById('r-soli').textContent    = soli > 0 ? '− ' + eur(soli) : '0,00 €';
    document.getElementById('r-kirche').textContent  = kirche ? '− ' + eur(kircheSt) : '0,00 €';
    document.getElementById('r-rv').textContent      = '− ' + eur(rv);
    document.getElementById('r-kv').textContent      = '− ' + eur(kv);
    document.getElementById('r-pv').textContent      = '− ' + eur(pv);
    document.getElementById('r-av').textContent      = '− ' + eur(av);
    document.getElementById('r-netto').textContent   = eur(netto);
    showPeriod();
}
calc();
</script>

@include('tools._seo_content', ['toolSlug' => 'gehaltsrechner', 'toolName' => 'Gehaltsrechner'])

@endsection