@font-face{font-family:'Oswald';src:url('fonts/Oswald-700.woff2') format('woff2');font-weight:400 700;font-display:swap}
@font-face{font-family:'Source Sans 3';src:url('fonts/SourceSans3-400.woff2') format('woff2');font-weight:200 900;font-display:swap}

:root{
  --rot:#D32F2F;          
  --rot-dunkel:#A82222;
  --anthrazit:#474747;    
  --tief:#232323;
  --text:#3d3d3d;
  --grau:#6d6d6d;
  --flaeche:#f4f3f1;
  --linie:#dcdad7;
  --weiss:#fff;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-padding-top:100px}
body{
  font-family:'Source Sans 3',-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--text);background:var(--weiss);
  font-size:17px;line-height:1.62;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:'Oswald',Impact,sans-serif;color:var(--tief);line-height:1.12;font-weight:600}
h1{font-size:clamp(2.1rem,4.6vw,3.5rem);font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(1.6rem,3vw,2.35rem);font-weight:700}
h3{font-size:1.22rem;font-weight:600}
p{margin-bottom:1rem}
a{color:var(--rot);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.mitte{width:min(1180px,92vw);margin-inline:auto}


.service{background:var(--anthrazit);color:#e9e7e5;font-size:.92rem}
.service .mitte{display:flex;flex-wrap:wrap;gap:.4rem 1.6rem;align-items:center;padding:.5rem 0;justify-content:space-between}
.service a{color:#fff;font-weight:600}
.service .tel{font-family:'Oswald';font-size:1.2rem;letter-spacing:.02em}
.service .zeit{color:#b9b5b1}


header{background:var(--weiss);border-bottom:1px solid var(--linie);position:sticky;top:0;z-index:60}
header .mitte{display:flex;align-items:center;gap:2rem;padding:.85rem 0}
header img{height:38px;width:auto}
nav{margin-left:auto;display:flex;gap:1.7rem;align-items:center}
nav a{color:var(--tief);font-family:'Oswald';font-weight:500;font-size:1rem;letter-spacing:.03em;text-transform:uppercase}
nav a:hover{color:var(--rot);text-decoration:none}
.knopf{
  background:var(--rot);color:#fff;font-family:'Oswald';font-weight:600;letter-spacing:.03em;
  padding:.72rem 1.5rem;display:inline-block;text-transform:uppercase;font-size:.98rem;
  border:0;cursor:pointer;transition:background .15s;
}
.knopf:hover{background:var(--rot-dunkel);text-decoration:none;color:#fff}
.knopf.hell{background:transparent;color:var(--tief);border:2px solid var(--tief)}
.knopf.hell:hover{background:var(--tief);color:#fff}
.menue-schalter{display:none;background:none;border:0;font-size:1.7rem;color:var(--tief);cursor:pointer}


.auf{border-bottom:1px solid var(--linie)}
.auf .mitte{display:grid;grid-template-columns:1.08fr .92fr;gap:3.4rem;align-items:center;padding:3.6rem 0 3.2rem}
.auf .ort{font-family:'Oswald';font-weight:600;color:var(--rot);letter-spacing:.09em;text-transform:uppercase;font-size:.92rem;margin-bottom:.9rem;display:block}
.auf h1{margin-bottom:1rem}
.auf p.gross{font-size:1.16rem;color:var(--grau);max-width:37rem}
.auf .knoepfe{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:1.7rem}
.auf-bild{position:relative}
.auf-bild img{width:100%;height:400px;object-fit:cover}
.bild-nachweis{
  position:absolute;left:0;bottom:0;background:rgba(35,35,35,.87);color:#fff;
  font-size:.83rem;padding:.5rem .9rem;letter-spacing:.02em;
}


.band{background:var(--tief);color:#e7e4e1;padding:1.5rem 0}
.band .mitte{display:flex;flex-wrap:wrap;gap:.6rem 2.6rem;align-items:baseline;font-size:1.02rem}
.band b{font-family:'Oswald';font-size:1.55rem;color:#fff;font-weight:600;margin-right:.45rem}


.bereiche{padding:4rem 0}
.kopfzeile{max-width:44rem;margin-bottom:2.4rem}
.kopfzeile h2{margin-bottom:.6rem}
.kopfzeile p{color:var(--grau)}
.raster{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem}
.karte{border:1px solid var(--linie);background:var(--weiss);display:flex;flex-direction:column}
.karte .bild{height:186px;overflow:hidden;background:var(--flaeche)}
.karte .bild img{width:100%;height:100%;object-fit:cover}
.karte .inhalt{padding:1.3rem 1.4rem 1.5rem;display:flex;flex-direction:column;flex:1}
.karte h3{margin-bottom:.5rem}
.karte ul{list-style:none;margin:.7rem 0 1.1rem;font-size:.97rem;color:var(--grau)}
.karte li{padding:.24rem 0 .24rem .95rem;position:relative}
.karte li::before{content:"";position:absolute;left:0;top:.78em;width:5px;height:5px;background:var(--rot)}
.karte .fuss{margin-top:auto;font-family:'Oswald';font-weight:600;color:var(--rot);text-transform:uppercase;font-size:.93rem;letter-spacing:.03em}


.winter{background:var(--tief);color:#dedbd8;padding:4rem 0}
.winter .mitte{display:grid;grid-template-columns:1fr 1fr;gap:3.2rem;align-items:start}
.winter h2{color:#fff}
.winter .merk{border-left:3px solid var(--rot);padding:.2rem 0 .2rem 1.2rem;margin:1.5rem 0;color:#fff;font-size:1.08rem}
.winter dl{margin-top:1.6rem;border-top:1px solid #3d3d3d}
.winter dt{font-family:'Oswald';font-weight:600;color:#fff;padding-top:1rem;font-size:1.05rem}
.winter dd{padding:.2rem 0 1rem;color:#b6b2ae;border-bottom:1px solid #3d3d3d;font-size:.98rem}


.solar{padding:4rem 0}
.solar .mitte{display:grid;grid-template-columns:.95fr 1.05fr;gap:3.2rem;align-items:center}
.solar img{width:100%;height:340px;object-fit:cover}
.solar .quelle{border-left:3px solid var(--rot);padding-left:1.1rem;color:var(--grau);font-size:.97rem;margin-top:1.4rem}


.betrieb{background:var(--flaeche);padding:4rem 0;border-top:1px solid var(--linie);border-bottom:1px solid var(--linie)}
.betrieb .mitte{display:grid;grid-template-columns:1fr 1fr;gap:3.2rem}
.platzhalter{
  border:2px dashed #c3bfbb;background:#eceae7;min-height:280px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:2rem;color:#8a8580;
}
.platzhalter strong{font-family:'Oswald';font-size:1.15rem;color:#6f6a65;display:block;margin-bottom:.5rem;font-weight:600}
.platzhalter span{font-size:.92rem;max-width:24rem}


.karriere{padding:3.6rem 0;background:var(--weiss)}
.karriere .mitte{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center}
.karriere .kasten{border:2px dashed #c3bfbb;background:#f7f6f4;padding:1.8rem}
.karriere .kasten h3{margin-bottom:.6rem;color:#6f6a65}
.karriere .offen{color:#8a8580;font-size:.95rem}


.kontakt{background:var(--tief);color:#dedbd8;padding:4rem 0}
.kontakt h2{color:#fff}
.kontakt .mitte{display:grid;grid-template-columns:.9fr 1.1fr;gap:3.4rem}
.kontakt a{color:#fff}
.kontakt .direkt{font-family:'Oswald';font-size:1.9rem;color:#fff;font-weight:600;display:block;margin:.3rem 0 1.3rem}
form{display:grid;gap:.85rem}
.reihe{display:grid;grid-template-columns:1fr 1fr;gap:.85rem}
label{font-size:.9rem;color:#b6b2ae;display:block;margin-bottom:.25rem}
input,textarea,select{
  width:100%;padding:.72rem .85rem;border:1px solid #4d4d4d;background:#2c2c2c;color:#fff;
  font-family:inherit;font-size:1rem;
}
input:focus,textarea:focus,select:focus{outline:2px solid var(--rot);outline-offset:0;border-color:var(--rot)}
.hinweis{font-size:.86rem;color:#a29e9a}


/* Unten Platz für den festen WhatsApp-Knopf, Impressum und Datenschutz links neben der Anschrift, damit der Knopf sie nie verdeckt. */
footer{background:#1b1b1b;color:#8f8b87;padding:2.4rem 0 6rem;font-size:.92rem}
footer .mitte{display:flex;flex-wrap:wrap;gap:1rem 2.4rem;justify-content:flex-start}
footer a{color:#c4c0bc}


.wa-knopf{
  position:fixed;right:1.4rem;bottom:1.4rem;z-index:60;
  display:inline-flex;align-items:center;gap:.6rem;
  background:#25D366;color:#123727;text-decoration:none;
  padding:.85rem 1.15rem;border-radius:999px;font-weight:600;font-size:.95rem;
  box-shadow:0 6px 18px rgba(0,0,0,.22);
  transition:transform .15s ease,box-shadow .15s ease;
}
.wa-knopf:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.28)}
.wa-knopf:active{transform:translateY(0)}
.wa-knopf svg{width:22px;height:22px;flex:none;fill:currentColor}

.wa-knopf[hidden]{display:none}

/* Unter 1500 px reicht der Platz rechts neben der Textspalte nicht für den Knopf mit Text:
   dann nur das Symbol, damit er keine Wortenden verdeckt (Prüfung 25.09.). */
@media(max-width:1500px){
  .wa-knopf span{display:none}
  .wa-knopf{padding:.9rem;border-radius:50%}
}

@media(max-width:1100px){
  .auf .mitte,.winter .mitte,.solar .mitte,.betrieb .mitte,.karriere .mitte,.kontakt .mitte{grid-template-columns:1fr;gap:2.2rem}
  .raster{grid-template-columns:1fr}
  nav{display:none}
  nav.offen{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#fff;padding:1.2rem 6vw;gap:1rem;border-bottom:1px solid var(--linie)}
  .menue-schalter{display:block;margin-left:auto}
  .auf-bild img{height:260px}
  .reihe{grid-template-columns:1fr}
  
  .wa-knopf span{display:none}
  .wa-knopf{padding:.7rem;border-radius:50%;right:.75rem;bottom:.75rem}
}

/* Ergänzungen für Kundentexte, Leistungsseiten und Tastaturbedienung. */
[id]{scroll-margin-top:100px}
.sprunglink{position:fixed;top:-100px;left:1rem;z-index:100;padding:.7rem 1rem;background:#fff;color:var(--tief)}
.sprunglink:focus{top:1rem}
a:focus-visible,button:focus-visible{outline:3px solid var(--rot);outline-offset:4px}
.service a:focus-visible,.kontakt a:focus-visible,footer a:focus-visible{outline-color:#fff}
header .knopf{white-space:nowrap}
header .startlink{flex-shrink:0}
.karte li a{color:inherit;text-decoration:underline;text-decoration-color:var(--linie);text-underline-offset:3px}
.karte li a:hover{color:var(--rot);text-decoration-color:currentColor}
.karte .fuss{align-self:flex-start;text-decoration:underline;text-underline-offset:4px}
.band .mitte{justify-content:space-between}
.band b{font-size:1.25rem}
.betrieb .portraet{max-width:47rem}
.betrieb .mitte{grid-template-columns:1fr}
.betrieb h2,.solar h2,.winter h2{margin-bottom:1rem}
.bau{background:var(--flaeche);padding:3.6rem 0;border-top:1px solid var(--linie)}
.bau .mitte{display:grid;grid-template-columns:.8fr 1.2fr;gap:3.2rem}
.bau h2{margin-bottom:1rem}
.karriere .kasten{border:1px solid var(--linie);background:var(--flaeche)}
.karriere .kasten h3{color:var(--tief)}
.kontakt-wege{display:flex;flex-wrap:wrap;gap:.7rem 1.2rem;margin:1.1rem 0}
.kontakt-wege a:not(.knopf){text-decoration:underline;text-underline-offset:3px}
.formularhinweis{border-left:3px solid var(--rot);padding:.3rem 0 .3rem 1rem;margin-bottom:1.4rem}
.formularhinweis strong{color:#fff}
.kontakt h3{color:#fff;margin-bottom:.5rem}
.kontakt label a{text-decoration:underline}
.kontakt .direkt{font-size:clamp(1.5rem,3vw,1.9rem)}
footer .fuss-leistungen{width:100%;display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;padding-bottom:1.2rem;border-bottom:1px solid #3d3d3d}
.detail-kopf{padding:2.8rem 0 3rem;border-bottom:1px solid var(--linie)}
.detail-kopf .mitte{display:grid;grid-template-columns:1.1fr .9fr;gap:3.2rem;align-items:center}
.pfad{font-size:.9rem;margin-bottom:1.2rem;color:var(--grau)}
.detail-kopf h1{margin-bottom:1.2rem;font-size:clamp(2rem,4.5vw,3.25rem);overflow-wrap:break-word}
.detail-kopf p{max-width:42rem}
.detail-kopf img{width:100%;height:290px;object-fit:cover}
.detail-inhalt{padding:3.3rem 0 4rem}
.detail-inhalt .mitte{display:grid;grid-template-columns:17rem minmax(0,1fr);gap:3.2rem;align-items:start}
.leistungsnavigation{font-size:1rem;border-top:3px solid var(--rot);padding-top:1rem}
.leistungsnavigation h2{font-size:1.3rem;margin-bottom:.8rem}
.leistungsnavigation a{display:block;padding:.35rem 0;color:var(--text);text-decoration:underline;text-underline-offset:3px}
.leistungsnavigation a:hover{color:var(--rot)}
.detail-texte{max-width:45rem}
.leistungsdetail{padding-bottom:1.6rem;margin-bottom:1.8rem;border-bottom:1px solid var(--linie)}
.leistungsdetail:last-child{margin-bottom:0;border-bottom:0}
.leistungsdetail h2{font-size:1.8rem;margin-bottom:.85rem}
.leistungsdetail p:last-child{margin-bottom:0}
.kontakt.kurz .mitte{align-items:center}
.kontakt.kurz .kontakt-wege{justify-content:flex-end}
@media(max-width:1100px){
  nav.offen{max-height:calc(100dvh - 85px);overflow-y:auto}
}
@media(max-width:800px){
  .bau .mitte,.detail-kopf .mitte,.detail-inhalt .mitte{grid-template-columns:1fr;gap:1.8rem}
  .detail-kopf img{height:235px}
  .detail-kopf{padding:2rem 0}
  .leistungsnavigation{padding-bottom:1rem;border-bottom:1px solid var(--linie)}
  .kontakt.kurz .kontakt-wege{justify-content:flex-start}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;transition:none!important}
}


/* Ergänzungen 23.09.: Formularversand, Rechtstexte, Karriereseite, 404. */
nav a[aria-current="page"]{color:var(--rot)}
.versteckt{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.einwilligung{display:flex;gap:.6rem;align-items:flex-start;font-size:.88rem}
.einwilligung input{width:auto;margin-top:.3rem;flex:none;accent-color:var(--rot)}
.knopf:disabled{opacity:.65;cursor:progress}
.hinweis.ok{color:#fff;border-left:3px solid #4caf50;padding:.35rem 0 .35rem .9rem}
.hinweis.fehler{color:#fff;border-left:3px solid var(--rot);padding:.35rem 0 .35rem .9rem}
.hinweis:empty{display:none}
.liste{list-style:none;margin:0 0 1rem}
.liste li{padding:.28rem 0 .28rem 1rem;position:relative}
.liste li::before{content:"";position:absolute;left:0;top:.85em;width:5px;height:5px;background:var(--rot)}
.liste a{text-decoration:underline;text-underline-offset:3px}
.rechtstext{padding:2.8rem 0 4rem}
.rechtstext .mitte{max-width:46rem}
.rechtstext h1{margin-bottom:1.4rem}
.rechtstext h2{font-size:1.3rem;margin:2rem 0 .6rem}
.rechtstext a{text-decoration:underline;text-underline-offset:3px}
.rechtstext .stand{margin-top:2.4rem;color:var(--grau);font-size:.92rem}
.rechtstext.kurz{padding:4rem 0 5rem}
.rechtstext .knoepfe{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:1.8rem}
.rechtstext .knoepfe a{text-decoration:none}
.kontakt h2{margin-bottom:.8rem}
.ablauf{margin:.4rem 0 0;border-left:3px solid var(--rot);padding-left:1.2rem}
.ablauf dt{font-family:'Oswald';font-weight:600;color:var(--tief);font-size:1.08rem;padding-top:.7rem}
.ablauf dt:first-child{padding-top:0}
.ablauf dd{margin:0 0 .3rem}
.leistungsdetail h3{font-size:1.1rem;margin:1.4rem 0 .4rem}
.leistungsdetail h2+h3{margin-top:.6rem}
.pfad a{text-decoration:underline;text-underline-offset:3px}
.ablauf+p{margin-top:1.1rem}
.start-fragen{padding:3.6rem 0 4rem;border-top:1px solid var(--linie)}