/* ============================================================
   cs-tate GmbH — Design System
   Elegant real-estate identity · self-hosted fonts (DSGVO)
   ============================================================ */

:root{
  /* Offizielle CI cs-tate (Diana Dill): Waldgrün, Slate, Gold, Sand */
  --navy:#1A3224;          /* Markenmittel: Waldgrün (primär) */
  --navy-deep:#12241A;     /* dunkleres Grün */
  --navy-soft:#24402E;
  --slate:#323B3F;
  --grey:#647481;
  --sand:#CDBBA6;
  --gold:#B8912E;          /* Gold/Ocker */
  --gold-soft:#D8B24A;
  --gold-bright:#FFD700;   /* Akzent, sparsam */
  --cream:#F4F0E9;
  --paper:#FFFFFF;
  --ink:#20261F;
  --muted:#6E6E73;
  --line:rgba(26,50,36,.13);
  --line-light:rgba(255,255,255,.16);
  --serif:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --wrap:1180px;
  --ease:cubic-bezier(.2,.6,.2,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--paper);
  font-size:17px;
  line-height:1.7;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ---------- Typography (Inter Light – offizielle CI) ---------- */
h1,h2,h3,h4{font-family:var(--sans);font-weight:300;line-height:1.14;letter-spacing:-.01em;color:var(--navy)}
h1{font-size:clamp(2.4rem,5.4vw,4rem);font-weight:200}
h2{font-size:clamp(1.9rem,4vw,2.8rem)}
h3{font-size:clamp(1.3rem,2.2vw,1.7rem);font-weight:400}
p{margin-bottom:1rem}
p:last-child{margin-bottom:0}

.kicker{
  font-family:var(--sans);
  font-size:.78rem;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gold);
  display:inline-flex;align-items:center;gap:.6rem;
  margin-bottom:1.1rem;
}
.kicker::before{content:"";width:28px;height:1px;background:var(--gold)}
.lead{font-size:1.18rem;color:#3a3a40}

/* ---------- Layout ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
.section{padding:clamp(4rem,9vw,7.5rem) 0}
.section--cream{background:var(--cream)}
.section--navy{background:var(--navy);color:#EAE7E1}
.section--navy h1,.section--navy h2,.section--navy h3{color:#fff}
.section--tight{padding:clamp(3rem,6vw,5rem) 0}
.center{text-align:center}
.section-head{max-width:640px;margin-bottom:3.2rem}
.section-head.center{margin-left:auto;margin-right:auto}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--sans);font-size:.82rem;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;
  padding:1rem 2rem;border:1px solid var(--navy);
  background:var(--navy);color:#fff;cursor:pointer;
  transition:all .35s var(--ease);
}
.btn:hover{background:transparent;color:var(--navy)}
.btn--gold{background:var(--gold);border-color:var(--gold);color:#fff}
.btn--gold:hover{background:transparent;color:var(--gold)}
.btn--ghost{background:transparent;color:var(--navy)}
.btn--ghost:hover{background:var(--navy);color:#fff}
.btn--light{background:transparent;border-color:var(--line-light);color:#fff}
.btn--light:hover{background:#fff;color:var(--navy);border-color:#fff}
.link-arrow{font-family:var(--sans);font-weight:600;font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);display:inline-flex;gap:.5rem;align-items:center;transition:gap .3s var(--ease)}
.link-arrow:hover{gap:.9rem}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:1.4rem 0;transition:all .4s var(--ease);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between}
.site-header .logo img{height:34px;width:auto;transition:opacity .3s}
.logo-white{display:block}
.logo-dark{display:none}
.site-header.scrolled{background:rgba(255,255,255,.96);backdrop-filter:saturate(1.4) blur(8px);padding:.85rem 0;box-shadow:0 1px 0 var(--line)}
.site-header.scrolled .logo-white{display:none}
.site-header.scrolled .logo-dark{display:block}
.nav{display:flex;align-items:center;gap:2.3rem}
.nav a{
  font-family:var(--sans);font-size:.8rem;font-weight:500;
  letter-spacing:.12em;text-transform:uppercase;color:#fff;
  position:relative;padding:.2rem 0;transition:color .3s;
}
.nav a::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--gold);transition:width .3s var(--ease)}
.nav a:hover::after,.nav a.active::after{width:100%}
.site-header.scrolled .nav a{color:var(--navy)}
.nav a.active{color:var(--gold)}
.nav .btn{padding:.7rem 1.4rem;color:#fff}
.site-header.scrolled .nav .btn{color:#fff}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:26px;height:2px;background:#fff;transition:all .3s}
.site-header.scrolled .burger span{background:var(--navy)}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  color:#fff;overflow:hidden;
}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg img{width:100%;height:100%;object-fit:cover}
.hero__bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(18,36,26,.55) 0%,rgba(18,36,26,.35) 40%,rgba(18,36,26,.78) 100%);}
.hero__inner{position:relative;z-index:2;max-width:760px;padding:8rem 0 4rem}
.hero h1{color:#fff;font-weight:200;font-style:normal;margin-bottom:1.4rem}
.hero .kicker{color:var(--gold-soft)}
.hero p{font-size:1.2rem;color:rgba(255,255,255,.9);max-width:560px;margin-bottom:2.2rem}
.hero__actions{display:flex;gap:1rem;flex-wrap:wrap}
.hero__scroll{position:absolute;bottom:2rem;left:50%;transform:translateX(-50%);z-index:2;color:rgba(255,255,255,.7);font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;display:flex;flex-direction:column;align-items:center;gap:.6rem}
.hero__scroll::after{content:"";width:1px;height:40px;background:rgba(255,255,255,.4);animation:scrollpulse 2s var(--ease) infinite}
@keyframes scrollpulse{0%,100%{transform:scaleY(.4);opacity:.4}50%{transform:scaleY(1);opacity:1}}

/* ---------- Intro / split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2.5rem,6vw,6rem);align-items:center}
.split__media{position:relative}
.split__media img{aspect-ratio:4/5;object-fit:cover;width:100%}
.split__media .badge{position:absolute;left:-24px;bottom:-24px;background:var(--gold);color:#fff;padding:1.5rem 1.8rem;max-width:220px}
.split__media .badge .num{font-family:var(--serif);font-size:2.6rem;line-height:1;display:block}
.split__media .badge .lbl{font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;margin-top:.4rem;opacity:.92}

/* ---------- Philosophy ---------- */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:2.5rem;margin-top:1rem}
.pillar{border-top:2px solid var(--gold);padding-top:1.5rem}
.pillar .idx{font-family:var(--serif);font-size:1.1rem;color:var(--gold);letter-spacing:.1em}
.pillar h3{margin:.4rem 0 .8rem;letter-spacing:.06em;text-transform:uppercase;font-family:var(--sans);font-size:.95rem;font-weight:700;color:#fff}
.pillar p{color:rgba(255,255,255,.78);font-size:.98rem}

/* ---------- Services ---------- */
.svc-list{display:flex;flex-direction:column}
.svc{display:grid;grid-template-columns:80px 1fr auto;gap:2rem;align-items:center;padding:2.1rem 0;border-top:1px solid var(--line);transition:padding .3s var(--ease)}
.svc:last-child{border-bottom:1px solid var(--line)}
.svc:hover{padding-left:1rem}
.svc__num{font-family:var(--serif);font-size:2.4rem;color:var(--gold)}
.svc__body h3{margin-bottom:.3rem}
.svc__body p{color:var(--muted);font-size:1rem;max-width:640px}
.svc__arrow{color:var(--gold);font-size:1.4rem;opacity:0;transition:opacity .3s}
.svc:hover .svc__arrow{opacity:1}

.svc-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:1.6rem}
.svc-card{position:relative;overflow:hidden;min-height:340px;display:flex;align-items:flex-end;color:#fff;padding:2rem}
.svc-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease);z-index:0}
.svc-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,36,26,.1),rgba(18,36,26,.82));z-index:1}
.svc-card:hover img{transform:scale(1.06)}
.svc-card__c{position:relative;z-index:2}
.svc-card__c .n{font-size:.8rem;letter-spacing:.18em;color:var(--gold-soft)}
.svc-card__c h3{color:#fff;margin:.4rem 0 .5rem}
.svc-card__c p{font-size:.95rem;color:rgba(255,255,255,.85)}

/* ---------- Projects ---------- */
.proj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2rem}
.proj{position:relative;overflow:hidden;background:var(--navy);color:#fff}
.proj__img{position:relative;overflow:hidden;aspect-ratio:4/3}
.proj__img img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.proj:hover .proj__img img{transform:scale(1.05)}
.proj__year{position:absolute;top:1rem;left:1rem;z-index:2;background:var(--gold);color:#fff;font-size:.74rem;font-weight:600;letter-spacing:.1em;padding:.35rem .8rem}
.proj__b{padding:1.6rem 1.7rem 1.9rem}
.proj__b .place{font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-soft)}
.proj__b h3{color:#fff;margin:.35rem 0 .6rem}
.proj__b p{color:rgba(255,255,255,.72);font-size:.96rem;margin-bottom:1rem}
.proj__meta{font-size:.85rem;color:rgba(255,255,255,.6);border-top:1px solid var(--line-light);padding-top:.9rem}

.proj--feature{display:grid;grid-template-columns:1.15fr 1fr;background:var(--navy);color:#fff;overflow:hidden}
.proj--feature .proj__img{aspect-ratio:auto;height:100%;min-height:440px}
.proj--feature .proj__b{padding:clamp(2rem,4vw,3.4rem);display:flex;flex-direction:column;justify-content:center}
.proj--feature .proj__b .units{margin:.4rem 0 1.4rem;color:rgba(255,255,255,.85)}
.dl{display:grid;grid-template-columns:auto 1fr;gap:.4rem 1.4rem;font-size:.92rem;margin-bottom:1.6rem}
.dl dt{color:var(--gold-soft);letter-spacing:.06em}
.dl dd{color:rgba(255,255,255,.88)}

/* ---------- Partners ---------- */
.partners{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:2.5rem}
.partners a,.partners .p{display:flex;align-items:center;justify-content:center;height:70px;padding:0 1rem;filter:grayscale(1);opacity:.7;transition:all .4s}
.partners a:hover{filter:grayscale(0);opacity:1}
.partners img{max-height:56px;width:auto;object-fit:contain}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;text-align:center}
.stat .n{font-family:var(--serif);font-size:clamp(2.4rem,4vw,3.4rem);color:var(--gold);line-height:1}
.stat .l{font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.75);margin-top:.5rem}

/* ---------- CTA band ---------- */
.cta{background:var(--navy-deep);color:#fff;text-align:center}
.cta h2{color:#fff;margin-bottom:1rem}
.cta p{max-width:560px;margin:0 auto 2rem;color:rgba(255,255,255,.82)}

/* ---------- Page hero (inner pages) ---------- */
.phero{background:var(--navy);color:#fff;padding:11rem 0 4.5rem;position:relative}
.phero .kicker{color:var(--gold-soft)}
.phero h1{color:#fff;font-style:normal;font-weight:200}
.phero .crumbs{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.55);margin-top:1rem}
.phero .crumbs a:hover{color:var(--gold-soft)}

/* ---------- Project detail ---------- */
.gallery{display:grid;grid-template-columns:repeat(12,1fr);gap:1rem}
.gallery img{width:100%;height:100%;object-fit:cover}
.gallery .g-lg{grid-column:span 8}
.gallery .g-sm{grid-column:span 4}
.gallery .g-half{grid-column:span 6}
.factsheet{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:2rem 0;margin:2.5rem 0}
.factsheet .f .k{font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
.factsheet .f .v{font-family:var(--serif);font-size:1.3rem;color:var(--navy);margin-top:.3rem}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(2.5rem,6vw,5rem)}
.contact-info .row{display:flex;gap:1rem;padding:1.3rem 0;border-bottom:1px solid var(--line)}
.contact-info .row .k{font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);width:90px;flex-shrink:0;padding-top:.2rem}
.contact-info .row a:hover{color:var(--gold)}
.form-field{margin-bottom:1.3rem}
.form-field label{display:block;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:.5rem;font-weight:600}
.form-field input,.form-field textarea{
  width:100%;font-family:var(--sans);font-size:1rem;color:var(--ink);
  padding:.9rem 1rem;border:1px solid var(--line);background:var(--paper);transition:border-color .3s;
}
.form-field input:focus,.form-field textarea:focus{outline:none;border-color:var(--gold)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.3rem}
.form-check{display:flex;gap:.7rem;align-items:flex-start;font-size:.9rem;color:var(--muted);margin-bottom:1.5rem}
.form-check input{margin-top:.25rem;accent-color:var(--gold)}
.form-check a{color:var(--gold);text-decoration:underline}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}
.alert{background:#EAF3EC;border-left:3px solid #3B7A57;color:#28503b;padding:1rem 1.2rem;margin-bottom:1.6rem;font-size:.95rem}
.err{color:#B23B3B;font-size:.84rem;margin-top:.4rem}
.map-embed{width:100%;height:340px;border:0;filter:grayscale(.3)}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy-deep);color:rgba(255,255,255,.7);padding:5rem 0 2rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:3rem;padding-bottom:3rem;border-bottom:1px solid var(--line-light)}
.site-footer .f-logo img{height:38px;margin-bottom:1.3rem}
.site-footer h4{font-family:var(--sans);font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:#fff;margin-bottom:1.3rem}
.site-footer a:hover{color:var(--gold-soft)}
.f-links{display:flex;flex-direction:column;gap:.7rem;font-size:.95rem}
.f-social{display:flex;gap:1rem;margin-top:1.3rem}
.f-social a{width:40px;height:40px;border:1px solid var(--line-light);display:flex;align-items:center;justify-content:center;transition:all .3s}
.f-social a:hover{background:var(--gold);border-color:var(--gold);color:#fff}
.f-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;padding-top:1.8rem;font-size:.82rem;color:rgba(255,255,255,.5)}
.f-bottom a:hover{color:var(--gold-soft)}

/* ---------- Gründerin / Founder ---------- */
.founder{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.founder__photo img,.founder__photo .ph{width:100%;aspect-ratio:4/5;object-fit:cover}
.founder__photo .ph{background:var(--navy);color:var(--gold-soft);display:flex;align-items:center;justify-content:center;font-size:4.5rem;font-weight:200;letter-spacing:.1em}
.founder__body .kicker{margin-bottom:.7rem}
.founder__body h2{margin-bottom:1rem}
.chips{display:flex;flex-wrap:wrap;gap:.55rem;margin:1.4rem 0 .2rem}
.chip{font-size:.76rem;letter-spacing:.03em;padding:.45rem .95rem;border:1px solid var(--line);border-radius:2rem;color:var(--navy);background:var(--paper)}
.founder__quote{border-left:3px solid var(--gold);padding-left:1.3rem;margin-top:1.6rem;font-style:italic;color:#4a4a4a;font-size:1.15rem;line-height:1.6}
@media(max-width:900px){.founder{grid-template-columns:1fr}.founder__photo img,.founder__photo .ph{max-width:360px}}

/* ---------- Rich text (RichEditor output) ---------- */
.rich p{margin-bottom:1rem}
.rich p:first-child{font-size:1.18rem;color:#3a3a40}
.rich a{color:var(--gold);text-decoration:underline}
.rich ul,.rich ol{margin:0 0 1rem 1.3rem}
.rich li{margin-bottom:.4rem}
.rich h2,.rich h3{margin:1.4rem 0 .6rem}
.rich blockquote{border-left:3px solid var(--gold);padding-left:1.1rem;margin:1rem 0;color:var(--muted);font-style:italic}
.section--navy .rich p:first-child,.section--navy .rich{color:rgba(255,255,255,.85)}

/* ---------- Legal pages ---------- */
.legal h3{font-family:var(--sans);font-size:.95rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--navy);margin:2.2rem 0 .7rem}
.legal h3:first-child{margin-top:0}
.legal p{color:#3a3a40;font-size:.98rem}
.legal a{color:var(--gold);text-decoration:underline}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .split,.contact-grid,.proj--feature{grid-template-columns:1fr}
  .proj-grid,.svc-cards{grid-template-columns:1fr}
  .pillars{grid-template-columns:1fr;gap:1.6rem}
  .stats{grid-template-columns:repeat(2,1fr);gap:2.5rem}
  .factsheet{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:2.2rem}
  .split__media .badge{left:auto;right:16px}
  .proj--feature .proj__img{min-height:300px}
  .nav{
    position:fixed;inset:0 0 0 auto;width:min(80vw,320px);background:var(--navy);
    flex-direction:column;align-items:flex-start;justify-content:center;gap:1.6rem;
    padding:2.5rem;transform:translateX(100%);transition:transform .4s var(--ease);z-index:200;
  }
  .nav.open{transform:none}
  .nav a{color:#fff!important;font-size:1rem}
  .burger{display:flex;z-index:210}
  .site-header.menu-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .site-header.menu-open .burger span:nth-child(2){opacity:0}
  .site-header.menu-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .site-header.menu-open .burger span{background:#fff!important}
  .gallery .g-lg,.gallery .g-sm,.gallery .g-half{grid-column:span 12}
}
@media(max-width:560px){
  body{font-size:16px}
  .form-row{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .svc{grid-template-columns:56px 1fr;gap:1.2rem}
  .svc__arrow{display:none}
}