@extends('layouts.app')
@section('title', 'Mehrwertsteuer Rechner – MwSt berechnen | kotsch.tech')
@section('meta_description', 'Mehrwertsteuer Rechner kostenlos: MwSt berechnen mit 19% oder 7%. Netto zu Brutto und Brutto zu Netto umrechnen – schnell und einfach.')
@section('meta_extra')
<meta name="keywords" content="Mehrwertsteuer Rechner, MwSt berechnen, Netto Brutto Rechner, 19 Prozent MwSt, 7 Prozent MwSt, Umsatzsteuer berechnen, Steuer Rechner">
@endsection
@section('content')
<style>
    :root { --ink: #0f172a; --muted: #64748b; --line: #e2e8f0; --accent: #059669; }
    .tool-page { min-height: 100vh; background: linear-gradient(135deg, #ecfdf5 0%, #fff 60%); padding-top: 92px; font-family: 'Plus Jakarta Sans', sans-serif; color: var(--ink); }
    .tool-container { width: min(100% - 40px, 680px); margin: 0 auto; padding: 24px 0 60px; }
    .tag { display: inline-flex; padding: 7px 12px; border-radius: 999px; background: rgba(5,150,105,0.12); color: #065f46; font-size: 0.72rem; font-weight: 900; letter-spacing: 1.5px; text-transform: uppercase; }
    h1.tool-h1 { margin: 18px 0 10px; font-size: clamp(2.1rem, 7vw, 4rem); line-height: 0.95; letter-spacing: -2px; font-weight: 800; }
    .tool-page p.sub { color: var(--muted); line-height: 1.7; margin: 0 0 28px; }
    .panel { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 28px; box-shadow: 0 24px 60px -32px rgba(15,23,42,0.18); margin-bottom: 16px; }
    .field { margin-bottom: 18px; }
    .field label { display: block; font-weight: 700; margin-bottom: 8px; font-size: 0.9rem; }
    .field input[type="number"] { width: 100%; min-height: 52px; border: 1px solid var(--line); border-radius: 12px; padding: 0 14px; font: inherit; font-size: 1.1rem; outline: 0; box-sizing: border-box; }
    .field input[type="number"]:focus { border-color: var(--accent); outline: 4px solid rgba(5,150,105,0.12); }
    .toggle-row { display: flex; gap: 8px; margin-bottom: 22px; }
    .toggle-btn { flex: 1; min-height: 44px; border: 2px solid var(--line); border-radius: 12px; background: #fff; font: inherit; font-weight: 700; font-size: 0.9rem; cursor: pointer; color: var(--muted); transition: all 0.18s; }
    .toggle-btn.active { border-color: var(--accent); background: rgba(5,150,105,0.08); color: var(--accent); }
    .rate-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; }
    .rate-btn { display: flex; align-items: center; gap: 7px; padding: 9px 16px; border: 2px solid var(--line); border-radius: 10px; background: #fff; font: inherit; font-weight: 700; font-size: 0.88rem; cursor: pointer; color: var(--ink); transition: all 0.18s; }
    .rate-btn.active { border-color: var(--accent); background: rgba(5,150,105,0.08); color: var(--accent); }
    .rate-btn input[type="radio"] { accent-color: var(--accent); }
    .custom-rate-wrap { display: flex; align-items: center; gap: 8px; }
    .custom-rate-wrap input { width: 80px; min-height: 38px; border: 1px solid var(--line); border-radius: 9px; padding: 0 10px; font: inherit; font-size: 0.95rem; outline: 0; box-sizing: border-box; text-align: center; }
    .custom-rate-wrap input:focus { border-color: var(--accent); outline: 3px solid rgba(5,150,105,0.12); }
    .res-table { width: 100%; border-collapse: collapse; }
    .res-table tr { border-bottom: 1px solid var(--line); }
    .res-table tr:last-child { border-bottom: none; }
    .res-table td { padding: 13px 4px; font-size: 0.95rem; }
    .res-table td:first-child { color: var(--muted); font-weight: 600; }
    .res-table td:last-child { text-align: right; font-weight: 800; font-size: 1.1rem; color: var(--ink); }
    .res-table tr.highlight td:last-child { color: var(--accent); font-size: 1.4rem; }
    .res-table tr.highlight td { padding-top: 16px; padding-bottom: 6px; }
    .placeholder-text { color: var(--muted); font-size: 0.93rem; text-align: center; padding: 20px 0; }
</style>

<div class="tool-page"><div class="tool-container">
    <section style="margin-bottom:28px">
        <span class="tag">Finanzen</span>
        <h1 class="tool-h1">Mehrwertsteuer.</h1>
        <p class="sub">Netto zu Brutto oder Brutto zu Netto – inkl. 19 %, 7 % und individuellem Steuersatz.</p>
    </section>

    <div class="panel">
        <div class="field">
            <label>Richtung</label>
            <div class="toggle-row">
                <button class="toggle-btn active" id="btn-nb" onclick="setMode('nb')">Netto → Brutto</button>
                <button class="toggle-btn" id="btn-bn" onclick="setMode('bn')">Brutto → Netto</button>
            </div>
        </div>

        <div class="field">
            <label id="amount-label">Nettobetrag (€)</label>
            <input type="number" id="amount" placeholder="z.B. 100,00" min="0" step="0.01" oninput="calc()">
        </div>

        <div class="field">
            <label>MwSt-Satz</label>
            <div class="rate-row">
                <button class="rate-btn active" id="rbtn-19" onclick="setRate(19)">
                    <input type="radio" name="rate" checked readonly> 19 % (Standard)
                </button>
                <button class="rate-btn" id="rbtn-7" onclick="setRate(7)">
                    <input type="radio" name="rate" readonly> 7 % (Ermäßigt)
                </button>
                <button class="rate-btn" id="rbtn-c" onclick="setRate('custom')">
                    <input type="radio" name="rate" readonly>
                    <span class="custom-rate-wrap">
                        Individuell:&nbsp;<input type="number" id="custom-rate" placeholder="z.B. 5" min="0" max="100" step="0.1" onclick="event.stopPropagation(); setRate('custom')" oninput="setRate('custom')">%
                    </span>
                </button>
            </div>
        </div>
    </div>

    <div class="panel" id="res-panel">
        <div class="placeholder-text" id="res-empty">Bitte Betrag eingeben …</div>
        <table class="res-table" id="res-table" style="display:none">
            <tr>
                <td>Nettobetrag</td>
                <td id="r-netto">–</td>
            </tr>
            <tr>
                <td id="r-mwst-label">MwSt-Betrag (19 %)</td>
                <td id="r-mwst">–</td>
            </tr>
            <tr class="highlight">
                <td>Bruttobetrag</td>
                <td id="r-brutto">–</td>
            </tr>
        </table>
    </div>
</div>@include('tools._ads_banner')</div>

<script>
    let mode = 'nb'; // nb = netto→brutto, bn = brutto→netto
    let rate = 19;

    const fmtEur = n => n.toLocaleString('de-DE', { style: 'currency', currency: 'EUR' });

    function setMode(m) {
        mode = m;
        document.getElementById('btn-nb').classList.toggle('active', m === 'nb');
        document.getElementById('btn-bn').classList.toggle('active', m === 'bn');
        document.getElementById('amount-label').textContent = m === 'nb' ? 'Nettobetrag (€)' : 'Bruttobetrag (€)';
        calc();
    }

    function setRate(r) {
        rate = r === 'custom' ? (parseFloat(document.getElementById('custom-rate').value) || 0) : r;
        document.getElementById('rbtn-19').classList.toggle('active', r === 19);
        document.getElementById('rbtn-7').classList.toggle('active', r === 7);
        document.getElementById('rbtn-c').classList.toggle('active', r === 'custom');
        calc();
    }

    function calc() {
        const amount = parseFloat(document.getElementById('amount').value);
        const currentRate = rate === 'custom'
            ? (parseFloat(document.getElementById('custom-rate').value) || 0)
            : rate;

        if (!amount || amount <= 0) {
            document.getElementById('res-empty').style.display = 'block';
            document.getElementById('res-table').style.display = 'none';
            return;
        }

        let netto, mwst, brutto;
        if (mode === 'nb') {
            netto = amount;
            mwst = netto * (currentRate / 100);
            brutto = netto + mwst;
        } else {
            brutto = amount;
            netto = brutto / (1 + currentRate / 100);
            mwst = brutto - netto;
        }

        document.getElementById('r-netto').textContent = fmtEur(netto);
        document.getElementById('r-mwst-label').textContent = 'MwSt-Betrag (' + currentRate.toLocaleString('de-DE') + ' %)';
        document.getElementById('r-mwst').textContent = fmtEur(mwst);
        document.getElementById('r-brutto').textContent = fmtEur(brutto);

        document.getElementById('res-empty').style.display = 'none';
        document.getElementById('res-table').style.display = 'table';
    }
</script>

@include('tools._seo_content', ['toolSlug' => 'mehrwertsteuer', 'toolName' => 'MwSt. Rechner'])

@endsection