/* ============================================================
   architektur4u – gemeinsames Stylesheet (Prototyp)
   ============================================================ */
:root{
  --ink:#1c1b19;
  --ink-soft:#4a4843;
  --bg:#f6f2ea;
  --bg-card:#fffdf9;
  --line:#e2dccf;
  --accent:#9a6a3c;      /* warm bronze/ochre */
  --accent-dark:#7d5330;
  --sage:#5e6b57;        /* Energie / Ökologie */
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:'Fraunces',Georgia,serif;font-weight:500;line-height:1.12;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,5vw,48px)}
.eyebrow{
  font-size:.74rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--accent);display:inline-flex;align-items:center;gap:.6em;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);display:inline-block}
.btn{
  display:inline-block;background:var(--ink);color:#fff;
  padding:.85em 1.7em;border-radius:2px;font-size:.92rem;font-weight:500;
  letter-spacing:.01em;transition:background .25s,transform .25s;cursor:pointer;border:none;
}
.btn:hover{background:var(--accent);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}

/* placeholder image */
.ph{
  position:relative;background:
    repeating-linear-gradient(-45deg,#eae3d6 0 14px,#e4dccc 14px 28px);
  color:var(--accent-dark);display:flex;align-items:center;justify-content:center;
  text-align:center;overflow:hidden;
}
.ph span{
  font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;font-weight:600;
  background:rgba(255,253,249,.82);padding:.5em 1em;border-radius:2px;z-index:1;
}
.ph.has-img{background:#ddd8cd}
.ph.has-img span{display:none}
.ph img{
  width:100%;height:100%;object-fit:cover;object-position:center;
  position:absolute;inset:0;
}

/* ---------- Header ---------- */
header{
  position:sticky;top:0;z-index:50;background:rgba(246,242,234,.88);
  backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .3s;
}
header.scrolled{border-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;max-width:var(--maxw);margin:0 auto;padding:18px clamp(20px,5vw,48px)}
.brand{font-family:'Fraunces',serif;font-size:1.25rem;font-weight:600;letter-spacing:-.01em}
.brand b{color:var(--accent)}
.nav-links{display:flex;gap:34px;align-items:center}
.nav-links a{font-size:.92rem;font-weight:500;color:var(--ink-soft);transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--accent)}
.nav-links .btn{color:#fff}
.nav-links .btn:hover{color:#fff}
.burger{display:none;font-size:1.5rem;background:none;border:none;cursor:pointer;color:var(--ink)}

/* ---------- Hero (Startseite) ---------- */
.hero{padding:clamp(48px,7vw,96px) 0 clamp(40px,5vw,72px)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(32px,5vw,72px);align-items:center}
.hero h1{font-size:clamp(2.4rem,5.2vw,4.1rem);margin:22px 0 20px}
.hero p.lead{font-size:1.12rem;color:var(--ink-soft);max-width:38ch;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-img{aspect-ratio:4/5;border-radius:4px}
.hero-badge{
  position:absolute;bottom:18px;left:18px;right:18px;background:rgba(28,27,25,.86);
  color:#fff;padding:14px 18px;border-radius:3px;font-size:.82rem;line-height:1.4;
  display:flex;align-items:center;gap:12px;
}
.hero-badge b{font-family:'Fraunces',serif;font-size:1rem}

/* ---------- Page-Hero (Unterseiten) ---------- */
.page-hero{padding:clamp(52px,7vw,90px) 0 clamp(32px,4vw,52px);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(2.1rem,4.6vw,3.4rem);margin:18px 0 16px}
.page-hero p{color:var(--ink-soft);font-size:1.1rem;max-width:56ch}
.crumbs{font-size:.8rem;color:var(--ink-soft);margin-top:20px}
.crumbs a:hover{color:var(--accent)}

/* ---------- Trust strip ---------- */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-card)}
.trust .wrap{display:flex;flex-wrap:wrap;gap:14px 40px;justify-content:space-between;padding-top:26px;padding-bottom:26px}
.trust-item{display:flex;align-items:center;gap:11px;font-size:.86rem;color:var(--ink-soft);font-weight:500}
.trust-item svg{flex:none;color:var(--accent)}

/* ---------- Section basics ---------- */
section.block{padding:clamp(60px,8vw,110px) 0}
.sec-head{max-width:60ch;margin-bottom:48px}
.sec-head h2{font-size:clamp(1.9rem,3.6vw,2.9rem);margin:16px 0 14px}
.sec-head p{color:var(--ink-soft);font-size:1.05rem}

/* ---------- Leistungen (Karten) ---------- */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:5px;
  padding:34px 30px;transition:transform .28s,box-shadow .28s,border-color .28s;
}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 40px -24px rgba(28,27,25,.4);border-color:var(--accent)}
.card .ic{width:46px;height:46px;border-radius:3px;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:22px}
.card.energie .ic{background:var(--sage)}
.card h3{font-size:1.4rem;margin-bottom:12px}
.card p{color:var(--ink-soft);font-size:.96rem;margin-bottom:18px}
.card ul{list-style:none;font-size:.9rem;color:var(--ink-soft)}
.card ul li{padding:7px 0 7px 20px;position:relative;border-top:1px solid var(--line)}
.card ul li::before{content:"";position:absolute;left:2px;top:15px;width:6px;height:6px;background:var(--accent);border-radius:50%}
.card.energie ul li::before{background:var(--sage)}

/* ---------- Leistungen Detail (alternierende Reihen) ---------- */
.detail-row{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:center;padding:clamp(40px,5vw,64px) 0;border-top:1px solid var(--line)}
.detail-row:first-of-type{border-top:none}
.detail-row .ph{aspect-ratio:5/4;border-radius:4px}
.detail-row.flip .txt{order:2}
.detail-row.flip .media{order:1}
.detail-row h2{font-size:clamp(1.6rem,3vw,2.3rem);margin:14px 0 16px}
.detail-row p{color:var(--ink-soft);margin-bottom:18px}
.detail-list{list-style:none;font-size:.95rem}
.detail-list li{padding:10px 0 10px 26px;position:relative;border-top:1px solid var(--line);color:var(--ink-soft)}
.detail-list li::before{content:"→";position:absolute;left:0;top:9px;color:var(--accent);font-weight:600}

/* ---------- Projekte ---------- */
.projekte{background:var(--ink);color:#f6f2ea}
.projekte .sec-head p{color:#c9c3b6}
.proj-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:200px;gap:16px}
.proj{position:relative;border-radius:4px;overflow:hidden}
.proj.big{grid-column:span 2;grid-row:span 2}
.proj.tall{grid-row:span 2}
.proj .cap{position:absolute;left:0;right:0;bottom:0;padding:16px;background:linear-gradient(transparent,rgba(0,0,0,.72));color:#fff;font-size:.82rem;font-weight:500}
.proj .ph{height:100%}
.refs{display:grid;grid-template-columns:1fr 1fr;gap:16px 48px;margin-top:52px}
.refs h3{color:var(--accent);font-size:1.15rem;margin-bottom:14px;font-family:'Inter',sans-serif;font-weight:600;letter-spacing:.02em}
.refs ul{list-style:none;font-size:.92rem;color:#d7d1c4}
.refs li{padding:8px 0;border-top:1px solid rgba(255,255,255,.12)}
.marquee{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px}
.chip{border:1px solid rgba(255,255,255,.25);border-radius:40px;padding:.5em 1.1em;font-size:.82rem;color:#e7e2d6}

/* Projekte-Seite: helle Galerie */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.gcard{background:var(--bg-card);border:1px solid var(--line);border-radius:5px;overflow:hidden;transition:transform .28s,box-shadow .28s}
.gcard:hover{transform:translateY(-5px);box-shadow:0 18px 40px -24px rgba(28,27,25,.4)}
.gcard .ph{aspect-ratio:4/3}
.gcard .body{padding:18px 20px}
.gcard .tag{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:600}
.gcard h3{font-size:1.15rem;margin:6px 0 6px;font-family:'Fraunces',serif}
.gcard p{font-size:.88rem;color:var(--ink-soft)}

/* ---------- Über ---------- */
.ueber-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(32px,5vw,72px);align-items:center}
.ueber-img{aspect-ratio:1/1;border-radius:5px}
.ueber h2{font-size:clamp(1.9rem,3.6vw,2.8rem);margin:16px 0 20px}
.ueber p{color:var(--ink-soft);margin-bottom:16px}
.creds{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.creds span{background:var(--bg-card);border:1px solid var(--line);border-radius:3px;padding:.5em 1em;font-size:.82rem;color:var(--ink-soft);font-weight:500}

/* Vita-Liste */
.vita{max-width:760px;margin:0 auto}
.vita-item{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:20px 0;border-top:1px solid var(--line)}
.vita-item .yr{font-family:'Fraunces',serif;color:var(--accent);font-size:1.05rem}
.vita-item p{color:var(--ink-soft);font-size:.95rem}
.vita-item h4{font-size:1.05rem;margin-bottom:4px}

/* ---------- Arbeitsweise ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step .num{font-family:'Fraunces',serif;font-size:2.4rem;color:var(--accent);line-height:1;margin-bottom:14px}
.step h3{font-size:1.15rem;margin-bottom:8px;font-family:'Fraunces',serif}
.step p{font-size:.92rem;color:var(--ink-soft)}
.quote{margin-top:56px;border-left:3px solid var(--accent);padding:6px 0 6px 26px;font-family:'Fraunces',serif;font-size:1.4rem;font-style:italic;color:var(--ink);max-width:52ch}

/* ---------- CTA-Band ---------- */
.cta-band{background:var(--accent);color:#fff;text-align:center;padding:clamp(48px,7vw,84px) 0}
.cta-band h2{font-size:clamp(1.7rem,3.4vw,2.6rem);margin-bottom:14px}
.cta-band p{opacity:.92;max-width:46ch;margin:0 auto 26px}
.cta-band .btn{background:#fff;color:var(--ink)}
.cta-band .btn:hover{background:var(--ink);color:#fff}

/* ---------- Kontakt ---------- */
.kontakt{background:var(--bg-card);border-top:1px solid var(--line)}
.kontakt-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px)}
.kontakt h2{font-size:clamp(1.9rem,3.6vw,2.8rem);margin:16px 0 22px}
.contact-line{display:flex;gap:12px;align-items:flex-start;margin-bottom:16px;font-size:1rem}
.contact-line svg{color:var(--accent);flex:none;margin-top:3px}
.contact-line a{color:var(--ink);font-weight:500}
.contact-line a:hover{color:var(--accent)}
form{display:grid;gap:14px}
form label{font-size:.8rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft)}
form input,form textarea{
  width:100%;padding:.85em 1em;border:1px solid var(--line);border-radius:3px;
  font-family:inherit;font-size:.95rem;background:#fff;color:var(--ink);
}
form input:focus,form textarea:focus{outline:none;border-color:var(--accent)}
.form-note{font-size:.78rem;color:var(--ink-soft)}
.form-note a{color:var(--accent);text-decoration:underline}
.map-ph{aspect-ratio:16/7;border-radius:4px;margin-top:8px}
.hero-img,.ueber-img,.detail-row .ph,.gcard .ph,.map-ph{position:relative}
.proj .ph{min-height:100%}

/* ---------- Prosa (Recht) ---------- */
.prose{max-width:760px;margin:0 auto}
.prose h2{font-size:1.4rem;margin:32px 0 12px}
.prose h3{font-size:1.1rem;margin:22px 0 8px;font-family:'Inter',sans-serif;font-weight:600}
.prose p{color:var(--ink-soft);margin-bottom:14px;font-size:.96rem}
.prose ul{color:var(--ink-soft);margin:0 0 14px 20px;font-size:.96rem}
.note-box{background:var(--bg-card);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:4px;padding:16px 20px;font-size:.88rem;color:var(--ink-soft);margin-bottom:28px}

/* ---------- Footer ---------- */
footer{background:var(--ink);color:#c9c3b6;padding:56px 0 30px}
.foot-grid{display:flex;flex-wrap:wrap;justify-content:space-between;gap:32px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12)}
footer .brand{color:#fff}
footer .sub{font-size:.86rem;margin-top:10px;max-width:34ch}
.foot-links{display:flex;flex-direction:column;gap:8px;font-size:.88rem}
.foot-links strong{color:#fff;font-weight:600;margin-bottom:4px}
.foot-links a:hover{color:var(--accent)}
.foot-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:22px;font-size:.8rem;color:#8f897c}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-grid,.ueber-grid,.kontakt-grid,.detail-row,.detail-row.flip .txt,.detail-row.flip .media{grid-template-columns:1fr}
  .detail-row.flip .txt{order:0}
  .detail-row.flip .media{order:0}
  .hero-img{aspect-ratio:16/11}
  .services,.steps,.gallery{grid-template-columns:1fr 1fr}
  .proj-grid{grid-template-columns:repeat(2,1fr)}
  .refs{grid-template-columns:1fr}
  .vita-item{grid-template-columns:1fr}
  .burger{display:block}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg-card);
    border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:8px 0;
  }
  header.open .nav-links{display:flex}
  .nav-links a{padding:12px clamp(20px,5vw,48px)}
  .nav-links .btn{margin:8px clamp(20px,5vw,48px);text-align:center}
}
@media(max-width:560px){
  .services,.steps,.gallery,.proj-grid{grid-template-columns:1fr}
  .proj.big{grid-column:span 1}
  .trust .wrap{justify-content:flex-start}
}