/* IBS GmbH – Planen und Bauen · statischer Nachbau (monsi.it)
   Design: Ostsee-Bauträger, Navy/See-Blau + Sand-Akzent, klar & seriös. */
:root{
  --navy:#1b2a3a; --navy-dk:#14202c;
  --blue:#2f6b93; --blue-dk:#255677; --blue-lt:#e7eff4;
  --sand:#c39a52; --sand-dk:#a9843c;
  --ink:#23303a; --muted:#5d6b76; --line:#e3e9ee;
  --bg:#ffffff; --soft:#f4f7f9;
  --maxw:1180px; --radius:10px;
  --shadow:0 8px 30px rgba(20,40,60,.10);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;font-family:var(--font);color:var(--ink);line-height:1.65;background:var(--bg);font-size:17px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--blue-dk);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font);color:var(--navy);line-height:1.2;font-weight:700;margin:0 0 .5em}
h1{font-size:clamp(30px,4.6vw,50px);letter-spacing:-.5px}
h2{font-size:clamp(24px,3.2vw,34px)}
h3{font-size:20px}
p{margin:0 0 1rem}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.narrow{max-width:820px}

/* Buttons */
.btn{display:inline-block;background:var(--blue);color:#fff;font-weight:600;padding:13px 26px;border-radius:6px;transition:.2s;border:2px solid var(--blue)}
.btn:hover{background:var(--blue-dk);border-color:var(--blue-dk);text-decoration:none}
.btn.sand{background:var(--sand);border-color:var(--sand)}
.btn.sand:hover{background:var(--sand-dk);border-color:var(--sand-dk)}
.btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn.ghost:hover{background:rgba(255,255,255,.15)}
.btn.outline{background:transparent;color:var(--blue-dk)}
.btn.outline:hover{background:var(--blue-lt)}

/* Topbar */
.topbar{background:var(--navy-dk);color:#cdd8e0;font-size:14px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
.topbar a{color:#fff}
.topbar .tb-contact{display:flex;gap:20px;flex-wrap:wrap}
.topbar .tb-links a{margin-left:16px;color:#aebdc9}

/* Header / Nav */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 12px rgba(20,40,60,.05)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 22px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:52px;width:auto}
.brand .bt{display:flex;flex-direction:column;font-weight:800;color:var(--navy);font-size:19px;line-height:1.1}
.brand .bt small{font-weight:500;color:var(--muted);font-size:12px;letter-spacing:.5px;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{color:var(--navy);font-weight:600;padding:8px 12px;border-radius:6px;font-size:16px}
.nav-links a:hover{background:var(--soft);text-decoration:none}
.nav-links a.active{color:var(--blue-dk)}
.nav-links .btn{color:#fff;padding:10px 18px}
.nav-links .btn:hover{background:var(--blue-dk)}
.has-drop{position:relative}
.has-drop>.drop-toggle::after{content:"▾";margin-left:5px;font-size:11px;color:var(--muted)}
.drop{position:absolute;top:100%;left:0;min-width:250px;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);padding:8px;display:none}
.has-drop:hover .drop,.has-drop:focus-within .drop{display:block}
.drop a{display:block;padding:9px 12px;border-radius:6px;font-weight:500}
.nav-toggle{display:none;background:none;border:0;font-size:26px;color:var(--navy);cursor:pointer}

/* Hero */
.hero{position:relative;min-height:70vh;display:flex;align-items:center;color:#fff;
  background-color:var(--navy);background-size:cover;background-position:center;background-repeat:no-repeat}
.hero .wrap{padding:80px 22px}
.hero .eyebrow{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.35);
  padding:6px 16px;border-radius:30px;font-size:13px;letter-spacing:2px;text-transform:uppercase;margin-bottom:20px}
.hero h1{color:#fff;max-width:16em;text-shadow:0 2px 18px rgba(0,0,0,.35)}
.hero p.lead{font-size:clamp(17px,2vw,21px);max-width:36em;color:#eef3f7;margin-bottom:28px;text-shadow:0 1px 10px rgba(0,0,0,.35)}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}

/* Sections */
.section{padding:72px 0}
.section.soft{background:var(--soft)}
.section.navy{background:var(--navy);color:#e7eef3}
.section.navy h2,.section.navy h3{color:#fff}
.eyebrow-line{color:var(--blue);font-weight:700;letter-spacing:2px;text-transform:uppercase;font-size:13px;margin-bottom:10px}
.section .lead{font-size:19px;color:var(--muted);max-width:44em}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.stat{text-align:center;padding:10px}
.stat .n{font-size:40px;font-weight:800;color:var(--sand);line-height:1}
.stat .l{color:#cbd6de;font-size:15px;margin-top:8px}

/* Split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split.rev .txt{order:2}
.split img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%;object-fit:cover}
figure{margin:0}
figure figcaption{color:var(--muted);font-size:14px;margin-top:8px;text-align:center}

/* Leistungen / cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 40px rgba(20,40,60,.16)}
.card .ph{aspect-ratio:3/2;overflow:hidden;background:var(--blue-lt)}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card:hover .ph img{transform:scale(1.06)}
.card .body{padding:20px 22px 24px}
.card .body h3{margin-bottom:6px}
.card .body p{color:var(--muted);font-size:15.5px;margin:0}
.card .meta{color:var(--blue);font-weight:700;font-size:13px;letter-spacing:.5px;text-transform:uppercase;margin-bottom:6px}
.card a.stretch{position:absolute;inset:0}
.card{position:relative}

/* Leistungen list */
.leist{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 34px;margin-top:20px;list-style:none;padding:0}
.leist li{position:relative;padding-left:30px;color:var(--ink)}
.leist li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:3px;
  background:var(--sand);box-shadow:0 0 0 4px var(--blue-lt)}

/* Reference project block */
.proj{padding:44px 0;border-top:1px solid var(--line)}
.proj:first-of-type{border-top:0}
.proj .head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:6px}
.proj .addr{color:var(--blue);font-weight:600}
.proj .txt{max-width:62em}
.proj ul.inline{margin:.4rem 0 1rem;padding-left:1.2rem}
.badge{display:inline-block;background:var(--blue-lt);color:var(--blue-dk);font-size:13px;font-weight:700;
  padding:4px 12px;border-radius:20px;margin-bottom:10px}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}
.gallery a{display:block;aspect-ratio:4/3;overflow:hidden;border-radius:8px;background:var(--blue-lt)}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.gallery a:hover img{transform:scale(1.07)}

/* Location grid (hub) */
.loc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}

/* Kontakt */
.k-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:40px}
.kbox{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;box-shadow:var(--shadow)}
.kline{display:flex;gap:12px;margin-bottom:12px}
.kline .ic{color:var(--blue);font-size:20px;flex:0 0 26px}
.map-embed{border:0;width:100%;height:100%;min-height:320px;border-radius:var(--radius)}

/* Empfehlungen */
.rec{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.rec a{display:block;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);border-radius:8px;padding:18px 20px;color:#fff}
.rec a:hover{background:rgba(255,255,255,.12);text-decoration:none}

/* Footer */
.site-footer{background:var(--navy-dk);color:#aebdc9;padding:56px 0 26px;font-size:15px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:14px}
.site-footer a{color:#cdd8e0}
.f-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.f-cols p{margin:0 0 8px}
.f-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;display:flex;
  justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px;color:#8698a6}
.f-bottom a{color:#8698a6}

/* Legal pages */
.legal{padding:56px 0}
.legal h1{margin-bottom:24px}
.legal h2{font-size:22px;margin-top:32px}
.legal p{color:var(--ink)}

/* Lightbox */
.lb{position:fixed;inset:0;background:rgba(12,20,28,.94);display:none;align-items:center;justify-content:center;z-index:100}
.lb.open{display:flex}
.lb img{max-width:92vw;max-height:86vh;border-radius:6px;box-shadow:0 10px 60px rgba(0,0,0,.6)}
.lb .close,.lb .prev,.lb .next{position:absolute;color:#fff;background:rgba(255,255,255,.12);border:0;cursor:pointer;
  font-size:28px;width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center}
.lb .close{top:22px;right:24px}
.lb .prev{left:22px;top:50%;transform:translateY(-50%)}
.lb .next{right:22px;top:50%;transform:translateY(-50%)}
.lb .prev:hover,.lb .next:hover,.lb .close:hover{background:rgba(255,255,255,.25)}

/* Responsive */
@media(max-width:920px){
  .cards,.loc-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:28px}
  .split.rev .txt{order:0}
  .k-grid,.rec{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .f-cols{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .nav-links{position:fixed;top:0;right:0;height:100vh;width:78%;max-width:320px;background:#fff;flex-direction:column;
    align-items:stretch;padding:80px 22px 22px;gap:4px;transform:translateX(100%);transition:transform .25s,visibility .25s;
    visibility:hidden;box-shadow:-6px 0 30px rgba(0,0,0,.15);overflow-y:auto}
  .nav-links.open{transform:translateX(0);visibility:visible}
  .nav-links a{padding:12px 10px;border-bottom:1px solid var(--line)}
  .has-drop .drop{position:static;display:block;box-shadow:none;border:0;padding:0 0 0 12px}
  .nav-toggle{display:block;z-index:60}
  .leist{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .cards,.loc-grid,.f-cols{grid-template-columns:1fr}
  .topbar .tb-links{display:none}
  .hero{min-height:auto;padding:24px 0 40px}
  .hero h1{font-size:26px}
  .hero .wrap{padding:48px 22px}
  .hero .actions{flex-direction:column;align-items:stretch}
  .hero .actions .btn{text-align:center}
  .brand .bt{font-size:17px}
  .topbar{font-size:13px}
  .topbar .tb-contact{gap:6px 16px}
}
@media(max-width:430px){
  .topbar .tb-contact span:first-child{display:none}
}