/* ===========================================================
   Anthony Teltschik — Dacharbeiten · Holzbau · Schieferdeckung
   Design system: copper standing-seam roofing as visual language
   =========================================================== */

/* Schriften werden per <link rel="stylesheet"> im <head> jeder Seite geladen.
   Kein @import hier: das erzeugt eine Request-Kette (HTML → style.css → Google-CSS
   → Font-Dateien) und verzögert den Textrender messbar. */

:root{
  /* --- Color tokens --- */
  --charcoal: #17191b;
  --charcoal-2: #1f2225;
  --slate: #262a2e;
  --slate-line: #383d42;
  --copper: #b5652f;
  --copper-bright: #dd8f4e;
  --copper-dim: #7a4522;
  --patina: #5c8577;
  --paper: #f5efe3;
  --paper-dim: #cfc7b6;
  --ink: #17150f;

  /* --- Type --- */
  --f-display: 'Playfair Display', Georgia, serif;
  --f-body: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --f-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --container: 1180px;
  --radius: 10px;
  --radius-lg: 18px;
  --shadow: 0 22px 70px rgba(0,0,0,.28);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; overflow-x: hidden; max-width: 100%; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *,*::before,*::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body{
  margin:0;
  max-width: 100%;
  background: var(--charcoal);
  color: var(--paper);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  background-image:
    radial-gradient(circle at 12% 12%, rgba(181,101,47,.08), transparent 24rem),
    radial-gradient(circle at 92% 42%, rgba(92,133,119,.05), transparent 28rem);
}
body.nav-open{ overflow:hidden; }
.gallery-grid figure[hidden]{ display:none; }

img{ max-width:100%; display:block; height:auto; }
a{ color: inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family: var(--f-display); font-weight: 600; margin: 0 0 .5em; line-height: 1.12; letter-spacing: -0.01em; }
p{ margin: 0 0 1em; color: var(--paper-dim); }

:focus-visible{
  outline: 2px solid var(--copper-bright);
  outline-offset: 3px;
}

.container{
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
}

.eyebrow{
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper-bright);
  display: inline-flex;
  align-items: center;
  gap: .6em;
  margin-bottom: 1em;
}
.eyebrow::before{
  content:'';
  width: 22px; height: 1px;
  background: var(--copper-bright);
  display:inline-block;
}

h1{ font-size: clamp(2.4rem, 6vw, 4.6rem); color: var(--paper); }
h2{ font-size: clamp(1.8rem, 4vw, 2.7rem); color: var(--paper); }
h3{ font-size: clamp(1.2rem, 2.4vw, 1.5rem); color: var(--paper); }

.lede{ font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--paper-dim); max-width: 46ch; }

/* ---------- Seam divider — the signature motif ---------- */
.seam{
  height: 34px;
  width: 100%;
  position: relative;
  background:
    repeating-linear-gradient(
      90deg,
      var(--copper-dim) 0px, var(--copper-dim) 2px,
      transparent 2px, transparent 46px
    );
  opacity: 0.55;
  overflow: hidden;
}
.seam::after{
  content:'';
  position:absolute; inset:0;
  background: linear-gradient(100deg, transparent 30%, rgba(221,143,78,0.5) 48%, transparent 66%);
  background-size: 220% 100%;
  animation: seam-sheen 7s ease-in-out infinite;
}
@keyframes seam-sheen{
  0%{ background-position: 140% 0; }
  50%{ background-position: -40% 0; }
  100%{ background-position: -40% 0; }
}

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font-family: var(--f-body);
  font-weight: 600;
  font-size: 0.98rem;
  padding: 0.95em 1.7em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
  min-height: 48px;
  white-space: nowrap;
}
.btn-copper{
  background: var(--copper);
  color: #1a1108;
}
.btn-copper:hover{ background: var(--copper-bright); transform: translateY(-2px); }
.btn-ghost{
  background: transparent;
  border-color: var(--slate-line);
  color: var(--paper);
}
.btn-ghost:hover{ border-color: var(--copper-bright); color: var(--copper-bright); transform: translateY(-2px); }
.btn svg{ width:18px; height:18px; flex-shrink:0; }

@media (hover:none){
  .btn:hover{ transform:none; }
}

/* ---------- Header / Nav ---------- */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(23,25,27,0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--slate-line);
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  height: 76px;
}
.brand{
  font-family: var(--f-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--paper);
  line-height: 1.2;
  display:flex; align-items:center; gap: 12px;
}
.brand img{
  height: 52px;
  width: auto;
  display:block;
}
.brand-text{ display:flex; flex-direction:column; }
.brand small{
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--copper-bright);
  text-transform: uppercase;
  font-weight:500;
  margin-top:3px;
}
.footer-col .brand{ margin-bottom: 14px; }
.footer-col .brand img{ height: 60px; }
@media (max-width: 480px){
  .brand img{ height: 42px; }
}
.nav-links{
  display:flex; align-items:center; gap: clamp(16px,3vw,36px);
}
.nav-links a{
  font-size: .95rem;
  font-weight: 500;
  color: var(--paper-dim);
  position: relative;
  padding: 6px 2px;
}
.nav-legal{ display:none; }
.nav-links a:hover, .nav-links a.active{ color: var(--paper); }
.nav-links a.active::after{
  content:'';
  position:absolute; left:0; right:0; bottom:0;
  height:2px; background: var(--copper);
}
.nav-cta{ display:flex; align-items:center; gap:12px; }
.nav-cta .btn{ padding: 0.7em 1.3em; font-size:.9rem; }

.nav-toggle{
  display:none;
  background:none; border:none; color: var(--paper);
  width:44px; height:44px; align-items:center; justify-content:center;
  cursor:pointer; position:relative; z-index:2;
}
.nav-toggle svg{ width:24px; height:24px; }
.nav-toggle line{
  transform-box:fill-box;
  transform-origin:center;
  transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] line:nth-child(1){ transform:translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] line:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] line:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }

@media (max-width: 860px){
  .nav-row{ height:68px; }
  .brand{ position:relative; z-index:2; }
  .nav-links{
    position:absolute;
    z-index:1;
    top:100%; left:0; right:0;
    height:calc(100vh - 68px);
    height:calc(100dvh - 68px);
    background:
      linear-gradient(145deg, rgba(181,101,47,.12), transparent 36%),
      var(--charcoal);
    flex-direction: column;
    align-items: flex-start;
    padding: 42px clamp(20px,8vw,64px) max(32px, env(safe-area-inset-bottom));
    gap: 6px;
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform: translateX(100%);
    transition:transform .28s cubic-bezier(.2,.7,.2,1), opacity .18s ease, visibility 0s linear .28s;
    overflow-y:auto;
    overscroll-behavior:contain;
  }
  .nav-links::before{
    content:'Navigation';
    font-family:var(--f-mono); font-size:10px; letter-spacing:.16em;
    text-transform:uppercase; color:var(--copper-bright); margin-bottom:12px;
  }
  .nav-links a{
    width:100%; font-family:var(--f-display); font-size:clamp(1.55rem,6vw,2.15rem);
    padding:10px 0; border-bottom:1px solid rgba(245,239,227,.09);
  }
  .nav-links a.active::after{ left:auto; width:42px; top:50%; bottom:auto; }
  .nav-links .nav-legal{
    display:block; font-family:var(--f-body); font-size:.95rem; color:var(--paper-dim);
    border:0; padding:7px 0;
  }
  .nav-links a:not(.nav-legal) + .nav-legal{ margin-top:20px; padding-top:20px; border-top:1px solid var(--slate-line); }
  .nav-links.open{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform: translateX(0);
    transition:transform .28s cubic-bezier(.2,.7,.2,1), opacity .18s ease;
    transition-delay:0s;
  }
  .nav-cta .btn-ghost{ display:none; }
  .nav-cta .btn-copper{ padding:.65em 1em; min-height:42px; }
  .nav-toggle{ display:flex; }
  .brand img{ height:44px; }
}

/* ---------- Hero ---------- */
.hero{
  position: relative;
  min-height: min(92vh, 880px);
  display:flex; align-items:flex-end;
  overflow:hidden;
}
.hero-media{
  position:absolute; inset:0;
  z-index:0;
}
.hero-media img{
  width:100%; height:100%; object-fit:cover;
  object-position: center 60%;
  transform: scale(1.04);
}
.hero-media::after{
  content:'';
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(17,18,19,0.35) 0%, rgba(17,18,19,0.55) 45%, rgba(17,18,19,0.97) 92%);
}
.hero-content{
  position:relative; z-index:2;
  padding: clamp(90px,16vw,160px) 0 clamp(56px,8vw,86px);
  width:100%;
}
.hero h1{ max-width: 15ch; margin-bottom:.35em; }
.hero h1 em{ font-style: italic; color: var(--copper-bright); }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-top: 2em; }
.hero-badges{
  display:flex; gap: clamp(18px,4vw,46px); flex-wrap:wrap;
  margin-top: 3em;
  padding-top: 2em;
  border-top: 1px solid rgba(245,239,227,0.14);
}
.hero-badge b{
  display:block; font-family: var(--f-display); font-size: 1.6rem; color: var(--paper);
}
.hero-badge span{
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing:.08em; text-transform:uppercase; color: var(--paper-dim);
}

/* ---------- Sections ---------- */
section{ padding: clamp(64px, 9vw, 120px) 0; }
.section-head{
  display:flex; justify-content:space-between; align-items:flex-end; gap:24px;
  margin-bottom: clamp(36px,5vw,64px);
  flex-wrap:wrap;
}
.bg-charcoal{ background: var(--charcoal); }
.bg-slate{ background: var(--charcoal-2); }
.bg-paper{ background: var(--paper); color: var(--ink); }
.bg-paper p{ color: #4a4436; }
.bg-paper h2, .bg-paper h3{ color: var(--ink); }
.bg-paper .eyebrow{ color: var(--copper-dim); }
.bg-paper .eyebrow::before{ background: var(--copper-dim); }

/* ---------- Leistungen cards ---------- */
.services-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--slate-line);
  border: 1px solid var(--slate-line);
}
.service-card{
  background: var(--charcoal-2);
  padding: 34px 26px;
  transition: background .25s ease;
  min-height: 290px;
  display:flex; flex-direction:column;
}
.service-card:hover{ background: var(--slate); }
.service-num{
  font-family: var(--f-mono); font-size: 11px; color: var(--copper);
  letter-spacing:.1em;
}
.service-card h3{ margin-top: .6em; }
.service-card p{ font-size: .93rem; flex-grow:1; }
.service-card .tag-list{ display:flex; flex-wrap:wrap; gap:8px; margin-top:1em; }
.service-card .tag-list li{
  font-family: var(--f-mono); font-size:10.5px; letter-spacing:.03em;
  color: var(--paper-dim); border:1px solid var(--slate-line); border-radius: 20px;
  padding: 4px 10px;
}
.service-link{
  margin-top: 1.4em; font-size:.88rem; font-weight:600; color: var(--copper-bright);
  display:inline-flex; align-items:center; gap:6px;
}
.service-card:hover .service-link{ gap:10px; }
.service-link svg{ width:14px; height:14px; transition: transform .2s ease; }

@media (max-width: 600px){
  .services-grid{ grid-template-columns: 1fr; }
}

/* ---------- Showcase / masonry-ish grid ---------- */
.showcase-grid{
  display:grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 12vw;
  grid-auto-flow: dense;
  gap: 10px;
}
.showcase-grid a{
  position:relative;
  overflow:hidden;
  border-radius: var(--radius-lg);
  display:block;
}
.showcase-grid img{
  width:100%; height:100%; object-fit:cover;
  transition: transform .5s cubic-bezier(.2,.7,.2,1);
}
.showcase-grid a:hover img{ transform: scale(1.07); }
.showcase-grid a::after{
  content: attr(data-label);
  position:absolute; left:0; right:0; bottom:0;
  padding: 10px 14px 9px;
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing:.06em; text-transform:uppercase;
  color: var(--paper);
  background: linear-gradient(0deg, rgba(0,0,0,.72), transparent);
  opacity:0; transform: translateY(6px);
  transition: opacity .25s ease, transform .25s ease;
}
.showcase-grid a:hover::after{ opacity:1; transform:translateY(0); }

.g-a{ grid-column: span 2; grid-row: span 2; }
.g-b{ grid-column: span 2; grid-row: span 1; }
.g-c{ grid-column: span 2; grid-row: span 2; }

@media (max-width: 860px){
  .showcase-grid{ grid-template-columns: repeat(2,1fr); grid-auto-rows: 42vw; }
  .g-a,.g-b,.g-c{ grid-column: span 1; grid-row: span 1; }
}

/* ---------- About / split ---------- */
.split{
  display:grid; grid-template-columns: 1fr 1fr; gap: clamp(28px,6vw,90px); align-items:center;
}
.split-media{ position:relative; }
.split-media img{ border-radius: var(--radius); }
.split-media .frame-tag{
  position:absolute; bottom:-1px; left:-1px;
  background: var(--copper); color:#1a1108;
  font-family: var(--f-mono); font-size:10.5px; letter-spacing:.08em; text-transform:uppercase;
  padding: 7px 13px;
}
@media (max-width: 860px){
  .split{ grid-template-columns: 1fr; }
  .split-media{ order:-1; }
}

.credentials{ margin-top:1.6em; display:grid; gap:14px; }
.credential{ display:flex; gap:14px; align-items:flex-start; }
.credential svg{ width:20px; height:20px; color: var(--copper-bright); flex-shrink:0; margin-top:2px; }
.credential span{ color: var(--paper-dim); font-size:.95rem; }

/* ---------- CTA band ---------- */
.cta-band{
  background: var(--slate);
  border-top: 1px solid var(--slate-line);
  border-bottom: 1px solid var(--slate-line);
  padding: clamp(48px,8vw,80px) 0;
}
.cta-inner{
  display:flex; justify-content:space-between; align-items:center; gap:32px; flex-wrap:wrap;
}
.cta-inner h2{ margin:0; max-width: 14ch; }
.cta-actions{ display:flex; gap:14px; flex-wrap:wrap; }

/* ---------- Footer ---------- */
footer{
  background: var(--charcoal);
  padding: 56px 0 28px;
  border-top: 1px solid var(--slate-line);
}
.footer-grid{
  display:grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px;
  padding-bottom: 40px;
}
.footer-col h4{
  font-family: var(--f-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase;
  color: var(--copper-bright); margin-bottom: 1.1em;
}
.footer-col ul{ display:grid; gap:10px; }
.footer-col a{ color: var(--paper-dim); font-size:.93rem; }
.footer-col a:hover{ color: var(--paper); }
.footer-bottom{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  padding-top: 24px; border-top: 1px solid var(--slate-line);
  font-size:.82rem; color: var(--paper-dim); font-family: var(--f-mono);
}
.footer-legal-name{
  margin: 16px 0 0;
  font-family: var(--f-mono); font-size:14px; line-height:1.5; letter-spacing:.03em;
  color: var(--paper);
}
.footer-legal-name span{ display:inline-block; white-space:nowrap; }
@media (max-width: 720px){
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .footer-grid .footer-col:first-child{ grid-column: span 2; }
}

/* ---------- Reveal on scroll ---------- */
.reveal{ opacity:0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible{ opacity:1; transform:none; }

/* ---------- Page header (inner pages) ---------- */
.page-header{
  padding: clamp(150px,20vw,210px) 0 clamp(56px,8vw,80px);
  background: var(--charcoal-2);
  border-bottom: 1px solid var(--slate-line);
  position:relative;
}
.page-header .container{ position:relative; z-index:1; }

/* ---------- Leistungen detail page ---------- */
.leistung-block{
  display:grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(30px,6vw,80px);
  align-items:center;
  padding: clamp(50px,8vw,90px) 0;
  border-bottom: 1px solid var(--slate-line);
}
.leistung-block:last-child{ border-bottom:none; }
.leistung-block:nth-child(even) .leistung-media{ order:2; }
.leistung-media img{ border-radius: var(--radius); }
.leistung-media img{ width:100%; aspect-ratio:4/3; object-fit:cover; }
.leistung-media-pair{ display:grid; grid-template-columns:1fr 1fr; gap:10px; }
.leistung-list{ margin-top: 1.4em; display:grid; gap: 10px; }
.leistung-list li{
  display:flex; gap:10px; align-items:flex-start;
  color: var(--paper-dim); font-size:.96rem;
}
.leistung-list svg{ width:18px; height:18px; color: var(--copper); flex-shrink:0; margin-top:3px; }

@media (max-width: 860px){
  .leistung-block{ grid-template-columns:1fr; }
  .leistung-block:nth-child(even) .leistung-media{ order:-1; }
}

/* ---------- Gallery page ---------- */
.filter-bar{
  display:flex; gap:10px; flex-wrap:wrap; margin-bottom: 40px;
}
.filter-btn{
  font-family: var(--f-mono); font-size: 11.5px; letter-spacing:.06em; text-transform:uppercase;
  padding: 10px 18px; border:1px solid var(--slate-line); border-radius: 30px;
  background: transparent; color: var(--paper-dim); cursor:pointer;
  transition: all .2s ease;
  min-height:44px;
}
.filter-btn:hover{ border-color: var(--copper); color: var(--paper); }
.filter-btn.active{ background: var(--copper); border-color: var(--copper); color:#1a1108; }

.gallery-grid{
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.gallery-grid figure{
  margin:0; position:relative; overflow:hidden; border-radius: var(--radius-lg);
  aspect-ratio: 4/5; cursor: zoom-in;
  background:var(--charcoal-2); box-shadow:0 12px 35px rgba(0,0,0,.16);
}
.gallery-grid img{ width:100%; height:100%; object-fit:cover; transition: transform .45s ease; }
.gallery-grid figure:hover img{ transform: scale(1.06); }
.gallery-grid figcaption{
  position:absolute; left:0; right:0; bottom:0; padding: 12px 14px 10px;
  font-family: var(--f-mono); font-size:10px; letter-spacing:.05em; text-transform:uppercase;
  background: linear-gradient(0deg, rgba(0,0,0,.7), transparent);
  color: var(--paper);
}
@media (max-width: 860px){
  .gallery-grid{ grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 500px){
  .gallery-grid{ grid-template-columns: 1fr; gap:14px; }
}

/* Lightbox */
.lightbox{
  position:fixed; inset:0; z-index:1000;
  background: rgba(10,10,10,0.94);
  display:none; align-items:center; justify-content:center;
  padding: 40px 20px;
}
.lightbox.open{ display:flex; }
.lightbox img{ max-width:min(94vw, 1100px); max-height:86vh; width:auto; border-radius: 2px; }
.lightbox-close, .lightbox-prev, .lightbox-next{
  position:fixed; background: rgba(255,255,255,0.06); border:1px solid rgba(255,255,255,0.16);
  color:var(--paper); width:48px; height:48px; border-radius:50%;
  display:flex; align-items:center; justify-content:center; cursor:pointer;
}
.lightbox-close{ top:20px; right:20px; }
.lightbox-prev{ left:16px; top:50%; transform:translateY(-50%); }
.lightbox-next{ right:16px; top:50%; transform:translateY(-50%); }
.lightbox-close svg, .lightbox-prev svg, .lightbox-next svg{ width:20px; height:20px; }
.lightbox-caption{
  position:fixed; bottom: 24px; left:0; right:0; text-align:center;
  font-family: var(--f-mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color: var(--paper-dim);
}

/* ---------- Kontakt page ---------- */
.contact-grid{
  display:grid; grid-template-columns: 1fr 1fr; gap: clamp(24px,5vw,40px);
}
.contact-card{
  background: var(--charcoal-2);
  border: 1px solid var(--slate-line);
  padding: clamp(30px,4vw,44px);
  border-radius: var(--radius-lg);
}
.contact-card .icon-wrap{
  width:52px; height:52px; border-radius:50%;
  background: rgba(181,101,47,0.15);
  display:flex; align-items:center; justify-content:center;
  margin-bottom: 1.4em;
}
.contact-card .icon-wrap svg{ width:24px; height:24px; color: var(--copper-bright); }
.contact-card .big-link{
  font-family: var(--f-display); font-size: clamp(1.3rem,3vw,1.8rem);
  color: var(--paper); display:inline-block; margin: .3em 0 .8em;
  word-break: break-word;
}
.contact-card .big-link:hover{ color: var(--copper-bright); }
.contact-meta{
  margin-top: clamp(40px,6vw,64px);
  display:grid; grid-template-columns: repeat(3,1fr); gap: 24px;
  padding-top: 36px; border-top: 1px solid var(--slate-line);
}
.contact-meta .eyebrow{ margin-bottom:.5em; }
@media (max-width: 860px){
  .contact-grid{ grid-template-columns: 1fr; }
  .contact-meta{ grid-template-columns:1fr; }
}

/* ---------- Legal pages ---------- */
.legal-content{ max-width: 74ch; }
.legal-content h2{ font-size: 1.4rem; margin-top: 1.8em; }
.legal-content h3{ font-size: 1.1rem; margin-top: 1.3em; }
.legal-content p, .legal-content li{ color: var(--paper-dim); font-size: .98rem; }
.legal-content ul{ list-style: disc; padding-left: 1.3em; display:grid; gap:.4em; margin-bottom:1em; }
.legal-content a{ color: var(--copper-bright); text-decoration: underline; text-underline-offset:3px; }
.legal-note{
  border-left: 3px solid var(--copper);
  background: rgba(181,101,47,0.08);
  padding: 14px 18px;
  font-size: .9rem;
  margin: 1.6em 0;
  color: var(--paper-dim);
}

/* ---------- WhatsApp floating button ---------- */
.wa-float{
  position: fixed; right: clamp(16px,4vw,28px); bottom: clamp(16px,4vw,28px);
  z-index: 90;
  width: 58px; height: 58px; border-radius: 50%;
  background: #25D366;
  display:flex; align-items:center; justify-content:center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  transition: transform .2s ease;
}

/* ---------- Cross-device refinements ---------- */
@media (max-width: 1100px){
  .nav-links{ gap:18px; }
  .nav-cta .btn{ padding-inline:1em; }
  .gallery-grid{ grid-template-columns:repeat(3,1fr); }
  .services-grid{ grid-template-columns:repeat(2,1fr); }
}

@media (max-width: 860px){
  .container{ padding-inline:clamp(18px,5vw,36px); }
  .hero{ min-height:calc(100svh - 68px); }
  .hero-content{ padding-block:110px 44px; }
  .hero-badges{ display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
  .hero-badge b{ font-size:1.35rem; }
  .page-header{ padding:clamp(104px,20vw,142px) 0 48px; }
  .filter-bar{
    position:sticky; top:68px; z-index:20; flex-wrap:nowrap; overflow-x:auto;
    margin-inline:calc(clamp(18px,5vw,36px) * -1);
    padding:12px clamp(18px,5vw,36px); margin-bottom:28px;
    background:rgba(23,25,27,.94); backdrop-filter:blur(14px);
    border-bottom:1px solid var(--slate-line); scrollbar-width:none;
  }
  .filter-bar::-webkit-scrollbar{ display:none; }
  .filter-btn{ flex:0 0 auto; }
  .gallery-grid{ grid-template-columns:repeat(2,1fr); }
  .cta-inner{ align-items:flex-start; }
  .lightbox{ padding:70px 12px 104px; }
  .lightbox img{ max-height:calc(100svh - 190px); max-width:100%; }
  .lightbox-prev,.lightbox-next{ top:auto; bottom:28px; transform:none; }
  .lightbox-prev{ left:calc(50% - 62px); }
  .lightbox-next{ right:calc(50% - 62px); }
  .lightbox-caption{ bottom:86px; padding-inline:20px; }
}

@media (max-width: 600px){
  body{ font-size:15.5px; }
  section{ padding-block:58px; }
  h1{ font-size:clamp(2.35rem,12vw,3.6rem); }
  h2{ font-size:clamp(1.8rem,9vw,2.45rem); }
  .hero h1{ max-width:12ch; }
  .hero-media img{ object-position:62% center; }
  .hero-actions,.cta-actions{ width:100%; display:grid; grid-template-columns:1fr; }
  .hero-actions .btn,.cta-actions .btn{ width:100%; justify-content:center; }
  .hero-badges{ grid-template-columns:1fr 1fr; }
  .hero-badge:last-child{ grid-column:1/-1; }
  .services-grid{ grid-template-columns:1fr; border-radius:var(--radius-lg); overflow:hidden; }
  .service-card{ min-height:auto; padding:28px 24px; }
  .showcase-grid{ display:grid; grid-template-columns:1fr; grid-auto-rows:72vw; }
  .gallery-grid{ grid-template-columns:1fr; }
  .showcase-grid a::after{ opacity:1; transform:none; }
  .leistung-media-pair{ gap:8px; }
  .leistung-media img{ aspect-ratio:1/1; }
  .footer-grid{ grid-template-columns:1fr; gap:30px; }
  .footer-grid .footer-col:first-child{ grid-column:auto; }
  .footer-bottom{ flex-direction:column; }
  .wa-float{ width:54px; height:54px; bottom:max(16px, env(safe-area-inset-bottom)); }
}

@media (max-width: 380px){
  .nav-cta{ display:none; }
  .hero-badges{ grid-template-columns:1fr; }
  .hero-badge:last-child{ grid-column:auto; }
}

.error-page{
  min-height:calc(100svh - 68px); display:grid; place-items:center;
  text-align:center; padding:72px 20px;
}
.error-page .lede{ margin-inline:auto; }
.wa-float:hover{ transform: scale(1.08); }
.wa-float svg{ width:28px; height:28px; color:#0b1a10; }

/* utility */
.mono{ font-family: var(--f-mono); }
.text-center{ text-align:center; }
.mt-0{ margin-top:0; }
