/* =====================================================================
   Beer Haustechnik – Corporate Website
   Zwei Design-Richtungen über data-theme umschaltbar:
     [data-theme="homefort"]  -> SHK / Haustechnik-Look (Standard)
     [data-theme="modex"]     -> Bau / Handwerk-Look
   Keine externen Ressourcen (DSGVO, Ladezeit): System-Fonts, alles lokal.
   ===================================================================== */

/* ---------- Marken-Grundfarben (aus dem Logo) ---------- */
:root{
  --c-anthracite:#2b2f33;
  --c-grey:#565759;
  --c-grey-light:#eef0f2;
  --c-green:#3fa535;
  --c-green-dark:#33862b;
  --c-blue:#009fe3;
  --c-blue-dark:#0784b8;
  --c-red:#e30613;
  --c-white:#ffffff;
  --c-text:#2b2f33;
  --c-muted:#6b7076;
  --c-border:#e2e5e8;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --wrap:1200px;
  --shadow:0 10px 30px rgba(20,25,30,.08);
  --shadow-lg:0 20px 50px rgba(20,25,30,.14);
  --trans:.25s ease;
}

/* ---------- Theme: HOMEFORT (SHK) – luftig, blau/grün, abgerundet ---------- */
[data-theme="homefort"]{
  --primary:var(--c-blue);
  --primary-dark:var(--c-blue-dark);
  --secondary:var(--c-green);
  --accent:var(--c-red);
  --radius:14px;
  --radius-sm:10px;
  --heading-transform:none;
  --heading-weight:800;
  --hero-overlay:linear-gradient(90deg, rgba(20,26,32,.82) 0%, rgba(20,26,32,.55) 55%, rgba(20,26,32,.15) 100%);
  --section-alt:#f5f8fa;
  --btn-radius:999px;
  --letter:-.01em;
}

/* ---------- Theme: MODEX (Bau) – bold, kantig, anthrazit/rot ---------- */
[data-theme="modex"]{
  --primary:var(--c-anthracite);
  --primary-dark:#000;
  --secondary:var(--c-green);
  --accent:var(--c-red);
  --radius:0px;
  --radius-sm:0px;
  --heading-transform:uppercase;
  --heading-weight:900;
  --hero-overlay:linear-gradient(90deg, rgba(15,18,21,.90) 0%, rgba(15,18,21,.70) 50%, rgba(15,18,21,.35) 100%);
  --section-alt:#f2f3f5;
  --btn-radius:0px;
  --letter:.01em;
}

/* ---------- Reset / Basis ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--c-text);
  line-height:1.65;font-size:17px;background:var(--c-white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary-dark);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{
  line-height:1.15;margin:0 0 .5em;color:var(--c-anthracite);
  font-weight:var(--heading-weight);letter-spacing:var(--letter);
}
h1{font-size:clamp(2rem,4.5vw,3.2rem);text-transform:var(--heading-transform)}
h2{font-size:clamp(1.6rem,3vw,2.3rem);text-transform:var(--heading-transform)}
h3{font-size:1.25rem}
p{margin:0 0 1rem}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}
.text-center{text-align:center}
.muted{color:var(--c-muted)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55em;
  padding:.85em 1.6em;border-radius:var(--btn-radius);
  font-weight:700;font-size:1rem;cursor:pointer;border:2px solid transparent;
  transition:var(--trans);text-decoration:none;line-height:1;
  text-transform:var(--heading-transform);letter-spacing:var(--letter);
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#b90410;color:#fff}
.btn-secondary{background:var(--secondary);color:#fff}
.btn-secondary:hover{background:var(--c-green-dark);color:#fff}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-ghost:hover{background:#fff;color:var(--c-anthracite)}
.btn-outline{background:transparent;color:var(--primary-dark);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:#fff;
  box-shadow:0 2px 14px rgba(20,25,30,.07);
}
.topbar{background:var(--c-anthracite);color:#cfd3d7;font-size:.85rem}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:7px 22px;flex-wrap:wrap}
.topbar a{color:#fff}
.topbar a:hover{color:var(--secondary);text-decoration:none}
.topbar-info{display:flex;gap:20px;flex-wrap:wrap}
.topbar-info span{display:inline-flex;align-items:center;gap:6px}

.header-main .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 22px}
.logo{display:flex;align-items:center;text-decoration:none}
.logo img,.logo svg{height:76px;width:auto;display:block}

/* Navigation */
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav ul{list-style:none;display:flex;gap:2px;margin:0;padding:0}
.main-nav a{
  display:block;padding:12px 14px;color:var(--c-anthracite);font-weight:600;
  border-radius:var(--radius-sm);font-size:.98rem;
}
.main-nav a:hover,.main-nav a.active{background:var(--c-grey-light);color:var(--primary-dark);text-decoration:none}
.has-sub{position:relative}
.has-sub>a::after{content:"▾";margin-left:5px;font-size:.75em;opacity:.6}
.submenu{
  position:absolute;top:100%;left:0;min-width:230px;background:#fff;
  box-shadow:var(--shadow-lg);border-radius:var(--radius-sm);padding:8px;
  display:none;border-top:3px solid var(--secondary);
}
.has-sub:hover .submenu,.has-sub:focus-within .submenu{display:block}
.submenu a{padding:10px 12px}

.header-cta{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:26px;height:3px;background:var(--c-anthracite);margin:5px 0;transition:var(--trans)}

/* Theme-Umschalter */
.theme-switch{display:flex;align-items:center;gap:6px}
.theme-switch button{
  background:transparent;border:1px solid rgba(255,255,255,.3);color:#cfd3d7;
  font-size:.78rem;padding:3px 10px;border-radius:999px;cursor:pointer;transition:var(--trans);
}
.theme-switch button.active{background:var(--secondary);color:#fff;border-color:var(--secondary)}
.theme-switch button:hover{color:#fff}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;overflow:hidden;
  background:var(--c-anthracite);
}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media .ph{width:100%;height:100%;align-items:flex-end;justify-content:flex-end}
.hero-media .ph>div{text-align:right;opacity:.5;padding:10px 16px}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:var(--hero-overlay)}
.hero .wrap{position:relative;z-index:2;padding-top:90px;padding-bottom:90px;max-width:1200px}
.hero-inner{max-width:640px}
.hero .eyebrow{
  display:inline-block;background:var(--accent);color:#fff;font-weight:700;
  padding:6px 14px;border-radius:var(--btn-radius);font-size:.8rem;letter-spacing:.05em;
  text-transform:uppercase;margin-bottom:18px;
}
.hero h1{color:#fff;margin-bottom:.4em}
.hero .subline{font-size:1.2rem;color:#e6e9ec;max-width:560px;margin-bottom:28px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Sections ---------- */
.section{padding:76px 0}
.section.alt{background:var(--section-alt)}
.section.dark{background:var(--c-anthracite);color:#e6e9ec}
.section.dark h2,.section.dark h3{color:#fff}
.section-head{max-width:720px;margin:0 auto 46px;text-align:center}
.section-head .kicker{
  color:var(--secondary);font-weight:800;text-transform:uppercase;letter-spacing:.08em;
  font-size:.85rem;display:block;margin-bottom:10px;
}
.section-head p{color:var(--c-muted);font-size:1.08rem}

/* ---------- Leistungs-Grid ---------- */
.grid{display:grid;gap:26px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

.card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--radius);
  padding:30px 26px;transition:var(--trans);height:100%;
}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:transparent}
.card .icon{
  width:58px;height:58px;border-radius:var(--radius-sm);display:grid;place-items:center;
  background:var(--c-grey-light);margin-bottom:18px;
}
.card .icon svg{width:30px;height:30px}
.card h3{margin-bottom:.4em}
.card p{color:var(--c-muted);font-size:.98rem;margin-bottom:1rem}
.card .more{font-weight:700;color:var(--primary-dark);font-size:.95rem}
.card .more::after{content:" →"}

/* Icon-Farbakzente rotierend */
.icon.i-blue{background:rgba(0,159,227,.12)} .icon.i-blue svg{stroke:var(--c-blue)}
.icon.i-green{background:rgba(63,165,53,.12)} .icon.i-green svg{stroke:var(--c-green)}
.icon.i-red{background:rgba(227,6,19,.10)} .icon.i-red svg{stroke:var(--c-red)}
.icon.i-grey{background:var(--c-grey-light)} .icon.i-grey svg{stroke:var(--c-anthracite)}

/* ---------- Split (Text + Bild) ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.split.reverse .split-media{order:-1}
.split-media .ph{border-radius:var(--radius);min-height:360px}
.split h2{margin-bottom:.6em}
.split ul.checks{list-style:none;padding:0;margin:1.2em 0}
ul.checks li{padding:8px 0 8px 34px;position:relative;font-weight:500}
ul.checks li::before{
  content:"✓";position:absolute;left:0;top:8px;color:#fff;background:var(--secondary);
  width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:.8rem;font-weight:800;
}

/* ---------- Bild-Platzhalter ---------- */
.ph{
  background:
    repeating-linear-gradient(45deg,rgba(255,255,255,.04) 0 12px,transparent 12px 24px),
    linear-gradient(135deg,var(--c-anthracite),#3a4046);
  color:#aeb4ba;display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:.85rem;padding:20px;position:relative;overflow:hidden;
}
.ph small{display:block;opacity:.75;margin-top:6px;font-size:.75rem}
.ph.green{background:linear-gradient(135deg,var(--c-green-dark),#2c7a25)}
.ph.blue{background:linear-gradient(135deg,var(--c-blue-dark),#046690)}

/* ---------- Echte Fotos (cover) ---------- */
.hero-media img.cover{width:100%;height:100%;object-fit:cover;display:block}
.split-media img.cover{width:100%;height:100%;object-fit:cover;border-radius:var(--radius);min-height:360px;display:block}
.ref-item img.cover{width:100%;height:100%;object-fit:cover;min-height:230px;display:block}

/* ---------- Zahlen / Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat .num{font-size:2.6rem;font-weight:900;color:var(--secondary);line-height:1}
.stat .lbl{color:var(--c-muted);font-size:.95rem;margin-top:6px}

/* ---------- Einsatzgebiet / Band ---------- */
.band{
  background:linear-gradient(120deg,var(--primary),var(--primary-dark));color:#fff;
  border-radius:var(--radius);padding:48px;display:flex;
  justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap;
}
[data-theme="modex"] .band{background:linear-gradient(120deg,var(--c-anthracite),#000)}
.band h2{color:#fff;margin:0}
.band p{margin:.4em 0 0;color:#e6e9ec}

/* ---------- Partner ---------- */
.partners{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;align-items:center}
.partner-chip{
  border:1px solid var(--c-border);border-radius:var(--radius-sm);padding:18px 26px;
  font-weight:800;color:var(--c-grey);background:#fff;min-width:150px;text-align:center;
}
.partner-chip small{display:block;font-weight:500;color:var(--c-muted);font-size:.75rem;margin-top:4px}

/* ---------- CTA-Band ---------- */
.cta-band{
  background:var(--accent);color:#fff;border-radius:var(--radius);
  padding:46px;text-align:center;
}
.cta-band h2{color:#fff}
.cta-band .btn-ghost{border-color:#fff}
.cta-band .phone{font-size:1.9rem;font-weight:900;color:#fff;display:inline-block;margin:8px 0 18px}
.cta-band .phone:hover{text-decoration:none}

/* ---------- Kontakt / Formular ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.info-list{list-style:none;padding:0;margin:0}
.info-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--c-border)}
.info-list .ico{
  flex:0 0 44px;height:44px;border-radius:var(--radius-sm);background:var(--c-grey-light);
  display:grid;place-items:center;color:var(--primary-dark);
}
.info-list .ico svg{width:22px;height:22px;stroke:var(--primary-dark)}
.info-list strong{display:block}
.info-list a{color:var(--primary-dark);font-weight:700}

form.contact{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius);padding:30px}
.form-alert{padding:13px 16px;border-radius:var(--radius-sm);margin-bottom:18px;font-weight:600;font-size:.95rem}
.form-alert.ok{background:rgba(63,165,53,.14);color:#2c7a25;border:1px solid rgba(63,165,53,.45)}
.form-alert.err{background:rgba(227,6,19,.10);color:#b90410;border:1px solid rgba(227,6,19,.45)}
[data-theme="modex"] form.contact{border-top:4px solid var(--accent)}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;margin-bottom:6px;font-size:.95rem}
.field .req{color:var(--accent)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--c-border);border-radius:var(--radius-sm);
  font-family:inherit;font-size:1rem;background:#fff;color:var(--c-text);
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,159,227,.15);
}
.field textarea{min-height:130px;resize:vertical}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;color:var(--c-muted)}
.consent input{width:auto;margin-top:4px}
.form-note{font-size:.82rem;color:var(--c-muted);margin-top:14px}

/* ---------- Karte (Consent) ---------- */
.map-consent{
  background:var(--c-grey-light);border:1px dashed var(--c-border);border-radius:var(--radius);
  padding:40px;text-align:center;
}
.map-consent p{max-width:520px;margin:0 auto 18px;color:var(--c-muted);font-size:.92rem}
.map-frame{border:0;width:100%;height:380px;border-radius:var(--radius)}

/* ---------- Öffnungszeiten Box ---------- */
.hours{background:var(--c-anthracite);color:#fff;border-radius:var(--radius);padding:26px 28px}
.hours h3{color:#fff}
.hours .row{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.hours .row:last-child{border:0}
.hours .row span:last-child{color:var(--secondary);font-weight:700}

/* ---------- Breadcrumb / Page Hero ---------- */
.page-hero{position:relative;background:var(--c-anthracite);color:#fff;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg, rgba(18,22,26,.90) 0%, rgba(18,22,26,.72) 50%, rgba(18,22,26,.42) 100%)}
.page-hero .hero-media{position:absolute;inset:0}
.page-hero .wrap{position:relative;z-index:2;padding:64px 22px}
.page-hero h1{color:#fff;margin:0}
.breadcrumb{font-size:.9rem;color:#cfd3d7;margin-bottom:10px}
.breadcrumb a{color:#fff}

/* ---------- Referenzen Grid ---------- */
.ref-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ref-item{border-radius:var(--radius);overflow:hidden;position:relative}
.ref-item .ph{min-height:230px}
.ref-item .cap{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;
  background:linear-gradient(0deg,rgba(15,18,21,.88),transparent);color:#fff;font-weight:700;font-size:.95rem;
}

/* ---------- FAQ ---------- */
.faq details{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-sm);margin-bottom:12px;padding:0}
.faq summary{padding:18px 20px;font-weight:700;cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--secondary);font-weight:900}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 20px 18px;margin:0;color:var(--c-muted)}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-anthracite);color:#aeb4ba;padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.site-footer h4{color:#fff;font-size:1.05rem;margin-bottom:16px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{padding:5px 0}
.site-footer a{color:#aeb4ba}
.site-footer a:hover{color:var(--secondary);text-decoration:none}
.footer-brand p{font-size:.92rem;line-height:1.7}
.footer-logo{margin-bottom:18px;background:#fff;border-radius:10px;padding:14px 18px;display:inline-block}
.footer-logo svg,.footer-logo img{height:56px;width:auto;display:block}
.footer-bar{border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding:20px 0}
.footer-bar .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.85rem}
.footer-bar a{color:#cfd3d7}

/* ---------- Intro (Seiteneinstieg) ---------- */
.lead{font-size:1.18rem;color:var(--c-muted);max-width:800px}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:30px}
  .split.reverse .split-media{order:0}
  .contact-grid{grid-template-columns:1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .ref-grid{grid-template-columns:repeat(2,1fr)}

  .nav-toggle{display:block}
  .main-nav{
    position:fixed;inset:0 0 0 auto;width:min(320px,86vw);background:#fff;
    flex-direction:column;align-items:stretch;padding:80px 18px 30px;gap:0;
    transform:translateX(100%);transition:transform .3s ease;box-shadow:var(--shadow-lg);
    overflow-y:auto;z-index:110;
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav ul{flex-direction:column;gap:0;width:100%}
  .main-nav a{padding:14px 12px;border-bottom:1px solid var(--c-border);border-radius:0}
  .submenu{position:static;display:block;box-shadow:none;padding:0 0 0 12px;border:0}
  .has-sub>a::after{display:none}
  .nav-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:99;display:none}
  .nav-backdrop.show{display:block}
}
@media(max-width:600px){
  body{font-size:16px}
  .section{padding:52px 0}
  .grid-4,.grid-3,.grid-2,.field-row,.ref-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .band,.cta-band,.map-consent{padding:30px}
  .hero .wrap{padding-top:60px;padding-bottom:60px}
  .header-cta .btn{display:none}
  .topbar-info{gap:12px}
  .logo img,.logo svg{height:56px}
}