:root{
  --bg:#ffffff; --text:#0f172a; --muted:#475569; --line:#e2e8f0; --accent:#0369a1;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Helvetica Neue',Arial,'Noto Sans',sans-serif;color:var(--text);background:var(--bg)}
a{color:var(--accent);text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 16px}
.topbar{background:#0b1220;color:#fff;font-size:14px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;padding:8px 0}
header{position:sticky;top:0;background:rgba(255,255,255,.95);backdrop-filter:saturate(120%) blur(8px);border-bottom:1px solid var(--line);z-index:20}
header .wrap{display:flex;justify-content:space-between;align-items:center;padding:12px 0}
nav a{margin-left:18px;color:#1f2937}
.button{display:inline-block;background:var(--accent);color:#fff;padding:10px 16px;border-radius:12px;font-weight:600}
.button.outline{background:#fff;color:#0f172a;border:1px solid var(--line)}
.logo{height:40px}
.hero{position:relative}
.hero img{width:100%;height:70vh;object-fit:cover;display:block}
.hero .overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(15,23,42,.65),rgba(15,23,42,.0))}
.hero .content{position:absolute;inset:0;display:flex;align-items:flex-end}
.hero .box{max-width:720px;color:#fff;padding:0 16px 28px}
h1{font-size:40px;line-height:1.15;margin:0 0 12px}
h2{font-size:32px;margin:0 0 8px}
h3{font-size:24px;margin:0 0 8px}
p.lead{color:#e2e8f0}
.section{padding:64px 0}
.usp{background:#f8fafc;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.usp .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.usp .item{display:flex;align-items:center;gap:8px;color:#334155}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{border:1px solid var(--line);border-radius:16px;padding:20px;background:#fff}
.process{background:#f8fafc;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stepgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{border:1px solid var(--line);border-radius:16px;background:#fff;padding:20px}
.badge{width:40px;height:40px;border-radius:999px;background:#0369a1;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.compare{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.compare .frame{position:relative;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.compare img{width:100%;height:380px;object-fit:cover;display:block}
.label{position:absolute;left:12px;top:12px;background:rgba(15,23,42,.85);color:#fff;padding:6px 10px;border-radius:999px;font-size:12px}
.grid-gallery{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.grid-gallery img{width:100%;height:160px;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
.contact{background:linear-gradient(to bottom,#f8fafc, #fff);border-top:1px solid var(--line)}
.contact .wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}
.input{display:block;width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:12px}
textarea.input{min-height:140px}
.checkbox{display:flex;gap:8px;font-size:12px;color:#475569}
footer{border-top:1px solid var(--line);background:#fff}
footer .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.small{color:#64748b;font-size:14px}
.copy{border-top:1px solid var(--line);text-align:center;padding:14px 0;color:#6b7280;font-size:14px}
@media (max-width:980px){
  .usp .grid{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:repeat(2,1fr)}
  .stepgrid{grid-template-columns:1fr}
  .grid-gallery{grid-template-columns:repeat(3,1fr)}
  .compare{grid-template-columns:1fr}
  .contact .wrap{grid-template-columns:1fr}
}
@media (max-width:640px){
  h1{font-size:30px}
  h2{font-size:24px}
  .grid-gallery{grid-template-columns:repeat(2,1fr)}
}


/* --- Mobile improvements (final v3) --- */
img{max-width:100%;height:auto}
@media (max-width:640px){
  .hero img{height:45vh}
  header .wrap{flex-wrap:wrap;gap:10px}
  nav a{margin-left:12px}
  .button{width:100%;text-align:center}
  .contact form > div{grid-template-columns:1fr !important}
  .grid-gallery{grid-template-columns:repeat(2,1fr)}
  .logo{height:32px}
}
@media (max-width:980px){ footer .grid{grid-template-columns:1fr 1fr} }
@media (max-width:640px){
  .topbar .wrap{flex-direction:column;align-items:flex-start;gap:6px}
  footer .grid{grid-template-columns:1fr}
}


/* --- Mobile Feinschliff: alles stapeln unter 640px --- */
@media (max-width: 640px){
  img{max-width:100%;height:auto}
  .hero img{height:45vh}
  header .wrap{flex-wrap:wrap;gap:10px}
  .topbar .wrap{flex-direction:column;align-items:flex-start;gap:6px}
  .button{width:100%;text-align:center}
  .cards{grid-template-columns:1fr !important}
  .usp .grid{grid-template-columns:1fr !important}
  .stepgrid{grid-template-columns:1fr !important}
  .grid-gallery{grid-template-columns:repeat(2,1fr) !important}
  .compare{grid-template-columns:1fr !important}
  .contact .wrap{grid-template-columns:1fr !important}
  .section .wrap,
  .section .grid,
  .section .two-col{display:block !important}
  .section .wrap > *, .section .grid > *, .section .two-col > *{width:100% !important}
}


/* --- Owner image mobile stacking --- */
@media (max-width: 900px){
  #ueber-uns .container{display:block!important}
  #ueber-uns .container > div:nth-child(2){margin-top:16px}
}


/* --- Mobile header CTA fix: button full-width below the nav --- */
@media (max-width: 900px){
  header .wrap{flex-direction:column;align-items:stretch}
  header nav{display:flex;flex-wrap:wrap;gap:12px}
  header nav a{margin-left:0}
  header nav a.button{
    order:99;
    width:100%;
    display:block;
    text-align:center;
    margin-top:8px;
    border-radius:12px;
  }
}


/* --- Added: social icons + sticky topbar --- */
.topbar{position:sticky; top:0; z-index:1000}
.topbar .container.wrap{display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap}
.header-social a{margin-left:8px}
.social-icons a{display:inline-flex; align-items:center; justify-content:center; width:40px; height:40px; margin-right:8px; border-radius:9999px; transition:transform .15s ease}
.social-icons a:hover{transform:scale(1.08)}
.social-icons img{display:block; width:32px; height:32px}
@media (max-width: 640px){
  .header-social{margin-left:auto}
}


/* --- Fixes: sticky bars + bigger social icons --- */
:root{ --topbar-h: 44px }
.topbar{ position:sticky; top:0; z-index:1000 }
header{ position:sticky; top:var(--topbar-h); z-index:900; background:#fff }
.topbar .container.wrap{ display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap }
.header-social a{ margin-left:8px }
.social-icons a{ display:inline-flex; align-items:center; justify-content:center; width:40px; height:40px; margin-right:10px; border-radius:9999px; transition:transform .15s ease }
.social-icons a:hover{ transform:scale(1.08) }
.social-icons img{ display:block; width:32px; height:32px }
@media (max-width: 640px){
  .header-social{ margin-left:auto }
}