/* RechnerBase – Design C 'Klassisch' */
:root{
  --blau:#0B4F8A;--blau-dunkel:#083A66;--blau-hell:#EAF2F9;
  --tinte:#1A2027;--grund:#FFFFFF;--grund2:#F6F8FA;
  --linie:#D8DEE5;--grau:#5D6874;
  --gruen:#0E7A45;--gruen-hell:#E9F5EE;--stempel:#B4231F;
}
*{margin:0;padding:0;box-sizing:border-box}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
body{font-family:'Source Sans 3',system-ui,sans-serif;background:var(--grund);color:var(--tinte);line-height:1.65;font-size:16.5px}
a{color:var(--blau);text-decoration:underline;text-decoration-color:#B6CBDD;text-underline-offset:2px}
a:hover{text-decoration-color:var(--blau)}
:focus-visible{outline:3px solid var(--blau);outline-offset:2px}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.serif{font-family:'Source Serif 4',serif}

/* Header */
.topbar{border-bottom:3px solid var(--blau)}
.topbar .oben{display:flex;align-items:center;justify-content:space-between;padding:16px 0 12px;gap:20px}
.logo{display:flex;align-items:baseline;gap:2px;color:var(--tinte);font-family:'Source Serif 4',serif;font-size:26px;text-decoration:none}
.logo b{color:var(--blau);font-weight:700}
.logo .claim{font-family:'Source Sans 3',sans-serif;font-size:12.5px;color:var(--grau);margin-left:12px;align-self:center}
nav.haupt{display:flex;gap:26px;padding:10px 0;border-top:1px solid var(--linie)}
nav.haupt a{text-decoration:none;font-weight:600;font-size:15px;color:var(--tinte);padding-bottom:8px;margin-bottom:-11px;white-space:nowrap}
nav.haupt a.aktiv{color:var(--blau);border-bottom:3px solid var(--blau)}
nav.haupt a:hover{color:var(--blau)}
@media(max-width:820px){nav.haupt{gap:16px;overflow-x:auto}.logo .claim{display:none}}

/* Anzeigen-Container: leer = unsichtbar; AdSense-Code einfügen -> Slot erscheint.
   Zum Layout-Test den Block unten einkommentieren. */
.ad{display:none}
.ad:not(:empty){display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--grund2);position:relative}
.ad:not(:empty)::before{content:"Anzeige";position:absolute;top:4px;left:8px;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:#98A2AE}
.ad-a:not(:empty){max-width:970px;margin:18px auto 0;min-height:100px}
.ad-b:not(:empty){min-height:120px;margin:28px 0}
.ad-c:not(:empty){min-height:250px;margin:32px 0}
.ad-side:not(:empty){min-height:600px;position:sticky;top:20px}
.ad-anchor:not(:empty){position:fixed;bottom:0;left:0;right:0;min-height:56px;z-index:50;background:#F0F2F5F2;box-shadow:0 -4px 16px rgba(26,32,39,.08)}
/* --- Layout-Vorschau (einkommentieren zum Testen):
.ad{display:flex;flex-direction:column;align-items:center;justify-content:center;background:#F0F2F5;border:1.5px dashed #C4CCD5;color:#7C8794;font-size:12px;min-height:100px}
.ad::after{content:attr(data-slot)}
--- */

/* Kopf & Brotkrumen */
.brotkrumen{font-size:13px;color:var(--grau);margin:20px 0 12px;display:flex;gap:6px;flex-wrap:wrap}
.brotkrumen a{color:var(--grau);text-decoration:none}
h1{font-family:'Source Serif 4',serif;font-weight:700;font-size:clamp(29px,4vw,40px);line-height:1.15;margin-bottom:10px}
.kopf-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:20px;font-size:14px;color:var(--grau)}
.kopf-meta .punkt{display:inline-flex;align-items:center;gap:6px}
.kopf-meta .punkt::before{content:"\2713";color:var(--gruen);font-weight:700}
.intro{max-width:76ch;margin-bottom:20px;font-size:17px}

/* Layout */
.layout{display:grid;grid-template-columns:1fr;gap:32px;margin-bottom:56px}
@media(min-width:1024px){.layout{grid-template-columns:minmax(0,1fr) 336px}}
aside{display:flex;flex-direction:column;gap:20px}
@media(max-width:1023px){aside .ad-side{display:none}}

/* Rechner (Formular-Optik) */
.rechner{border:1.5px solid var(--tinte);background:#fff}
.rechner .kopfzeile{background:var(--blau);color:#fff;padding:11px 20px;font-family:'Source Serif 4',serif;font-size:16.5px;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:10px}
.rechner .kopfzeile small{font-family:'Source Sans 3',sans-serif;font-size:11.5px;opacity:.85}
.rechner-grid{display:grid;grid-template-columns:1fr}
@media(min-width:820px){.rechner-grid{grid-template-columns:1.05fr 1fr}}
.eingaben{padding:22px 20px}
.feld{margin-bottom:14px}
.feld label{display:block;font-size:13.5px;font-weight:700;margin-bottom:5px}
.feld input,.feld select{width:100%;padding:10px 12px;border:1.5px solid var(--tinte);border-radius:0;font-size:16px;font-family:inherit;background:#fff;color:var(--tinte)}
.feld input:focus,.feld select:focus,.feld textarea:focus{outline:3px solid rgba(11,79,138,.25);border-color:var(--blau)}
.feld textarea{width:100%;min-height:130px;padding:10px 12px;border:1.5px solid var(--tinte);border-radius:0;font-size:15px;font-family:inherit;background:#fff;color:var(--tinte);resize:vertical}
.result-input{width:100%;padding:10px 12px;border:1.5px solid var(--tinte);font-family:'Courier Prime',monospace;font-weight:700;font-size:16px;background:#fff;margin:4px 0 8px}
.mini-btn{padding:9px 14px;border:1.5px solid var(--blau-dunkel);background:var(--blau);color:#fff;font-family:inherit;font-weight:700;font-size:13.5px;cursor:pointer}
.mini-btn:hover{background:var(--blau-dunkel)}
.feld-sfx{position:relative}
.feld-sfx input{padding-right:52px;font-family:'Courier Prime',monospace;font-weight:700}
.feld-sfx .sfx{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--grau);font-weight:700;font-size:14px}
.feld-reihe{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:420px){.feld-reihe{grid-template-columns:1fr}}
.check{display:flex;align-items:center;gap:9px;font-size:14.5px;font-weight:600;cursor:pointer;padding:3px 0}
.check input{width:17px;height:17px;accent-color:var(--blau)}
.btn-rechnen{width:100%;margin-top:14px;padding:13px;border:1.5px solid var(--blau-dunkel);cursor:pointer;background:var(--blau);color:#fff;font-family:inherit;font-weight:700;font-size:16.5px}
.btn-rechnen:hover{background:var(--blau-dunkel)}

/* Bescheid / Ergebnis */
.bescheid{padding:22px 20px;background:var(--grund2);border-left:1.5px solid var(--tinte);position:relative}
@media(max-width:819px){.bescheid{border-left:0;border-top:1.5px solid var(--tinte)}}
.stempel{position:absolute;top:14px;right:14px;border:2.5px solid var(--stempel);color:var(--stempel);font-family:'Courier Prime',monospace;font-weight:700;font-size:10.5px;letter-spacing:.12em;padding:4px 9px;transform:rotate(-6deg);text-transform:uppercase;background:rgba(255,255,255,.7)}
.bescheid .titel{font-family:'Source Serif 4',serif;font-size:16px;font-weight:700;margin-bottom:12px}
.b-zeile{display:flex;justify-content:space-between;align-items:baseline;font-size:14.5px;padding:5px 0;border-bottom:1px solid #E3E8EE;gap:10px}
.b-zeile .lbl{color:#414B57}
.b-zeile .wert{font-family:'Courier Prime',monospace;font-weight:700;white-space:nowrap;font-variant-numeric:tabular-nums;text-align:right}
.b-zeile.abzug .wert{color:#8A3B37}
.b-zeile.summe{border-bottom:3px double var(--tinte);padding:8px 0}
.netto-kasten{background:var(--gruen-hell);border:1.5px solid var(--gruen);padding:12px 14px;margin-top:13px}
.netto-kasten .lbl{font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--gruen);font-weight:700}
.netto-kasten .zahl{font-family:'Courier Prime',monospace;font-size:clamp(24px,3vw,31px);font-weight:700;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.netto-kasten .pro{font-size:12.5px;color:var(--grau)}
.fussnote{font-size:11px;color:#8A94A0;margin-top:12px;line-height:1.5}

/* Inhalt */
.inhalt h2{font-family:'Source Serif 4',serif;font-weight:700;font-size:25px;margin:34px 0 13px}
.inhalt h3{font-family:'Source Serif 4',serif;font-weight:600;font-size:19px;margin:24px 0 9px}
.inhalt p{margin-bottom:13px;max-width:72ch}
.inhalt ul,.inhalt ol{margin:0 0 13px 22px;max-width:70ch}
.inhalt li{margin-bottom:5px}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px;display:block;overflow-x:auto;border:1.5px solid var(--tinte)}
@media(min-width:640px){table{display:table}}
th{background:var(--blau-hell);text-align:left;padding:10px 13px;font-weight:700;font-size:13.5px;border-bottom:1.5px solid var(--tinte);white-space:nowrap}
td{padding:9px 13px;border-bottom:1px solid var(--linie);font-variant-numeric:tabular-nums}
tr:last-child td{border-bottom:0}
.tabelle-quelle{font-size:12.5px;color:var(--grau);margin-top:-8px}
details{border:1px solid var(--linie);border-left:4px solid var(--blau);margin-bottom:10px;background:#fff}
summary{padding:14px 17px;font-weight:700;font-size:15.5px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-family:'Courier Prime',monospace;font-size:20px;color:var(--blau)}
details[open] summary::after{content:"\2013"}
details .antwort{padding:0 17px 15px;font-size:15px;max-width:72ch}

/* Karten */
.karten-raster{display:grid;grid-template-columns:repeat(auto-fill,minmax(225px,1fr));gap:12px;margin-top:14px}
.mini-karte{border:1px solid var(--linie);padding:14px 15px;text-decoration:none;background:#fff;display:block}
.mini-karte:hover{border-color:var(--blau);background:var(--blau-hell)}
.mini-karte .name{font-weight:700;font-size:15px;color:var(--blau);display:block;margin-bottom:3px;text-decoration:underline;text-decoration-color:#B6CBDD;text-underline-offset:2px}
.mini-karte .desc{font-size:13px;color:var(--grau);line-height:1.45}
.side-box{border:1.5px solid var(--tinte);padding:17px 19px;background:#fff}
.side-box h2,.side-box h3{font-family:'Source Serif 4',serif;font-size:16.5px;font-weight:700;margin-bottom:9px;padding-bottom:8px;border-bottom:3px double var(--tinte)}
.side-box ol,.side-box ul{list-style:none}
.side-box li{padding:7px 0;border-bottom:1px solid var(--linie);font-size:14.5px}
.side-box li:last-child{border:0}

/* Startseite */
.hero{background:var(--blau-hell);border-bottom:1.5px solid var(--linie);padding:40px 0 34px;text-align:center}
.hero h1{font-size:clamp(30px,4.5vw,46px);margin-bottom:8px}
.hero p{max-width:62ch;margin:0 auto 22px;font-size:17.5px;color:#33404C}
.suchfeld{max-width:560px;margin:0 auto;position:relative}
.suchfeld input{width:100%;padding:14px 18px;border:1.5px solid var(--tinte);font-size:17px;font-family:inherit}
.suchfeld input:focus{outline:3px solid rgba(11,79,138,.25)}
.kat-sektion{margin:36px 0 8px}
.kat-sektion .kat-kopf{display:flex;justify-content:space-between;align-items:baseline;gap:14px;border-bottom:3px double var(--tinte);padding-bottom:8px;margin-bottom:4px}
.kat-sektion h2{font-family:'Source Serif 4',serif;font-size:23px}
.kat-sektion .kat-kopf a{font-size:14px;white-space:nowrap}
.leer-hinweis{display:none;color:var(--grau);margin:26px 0;font-size:16px}

footer{background:var(--grund2);border-top:3px solid var(--blau);margin-top:44px;padding:38px 0 80px;font-size:14px}
.fuss-raster{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:26px;margin-bottom:26px}
footer h2{font-family:'Source Serif 4',serif;font-size:15px;margin-bottom:9px}
footer a{color:var(--grau);display:block;padding:3px 0;font-size:13.5px}
.fuss-unten{border-top:1px solid var(--linie);padding-top:17px;font-size:12.5px;color:var(--grau);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}