/* ==========================================================
   GREF Schirme — Shared Stylesheet (light, airy palette)
   ========================================================== */

:root{
  --bg:#f3f4f3;
  --surface:#ffffff;
  --ink:#2a322d;
  --ink-soft:#6c7670;
  --line:#e3e6e3;
  --brand:#3f8e3e;
  --brand-2:#5faa5e;
  --brand-deep:#2d6b2d;
  --accent:#7d8a7d;
  --accent-soft:#dde2dd;
  --muted:#eceeec;
  --radius:14px;
  --max:1200px;
  --shadow:0 10px 40px -15px rgba(63,142,62,.18);
  --shadow-sm:0 4px 20px -8px rgba(63,142,62,.14);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Open Sans',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- NAV ---------- */
header.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(243,244,243,.85);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;max-width:1400px;margin:0 auto;gap:16px;height:60px}
.logo{font-family:'Open Sans',system-ui,sans-serif;font-weight:700;font-size:22px;letter-spacing:-.02em;display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:32px;height:32px;background:var(--brand);border-radius:50%;position:relative;overflow:hidden;flex-shrink:0}
.logo-mark::before{content:"";position:absolute;inset:0;background:
  conic-gradient(from 0deg,
    var(--brand) 0 45deg,var(--brand-2) 45deg 90deg,
    var(--brand) 90deg 135deg,var(--brand-2) 135deg 180deg,
    var(--brand) 180deg 225deg,var(--brand-2) 225deg 270deg,
    var(--brand) 270deg 315deg,var(--brand-2) 315deg 360deg);}
.logo-mark::after{content:"";position:absolute;top:50%;left:50%;width:4px;height:4px;background:#fff;border-radius:50%;transform:translate(-50%,-50%)}
.logo-img{height:50px;width:auto;display:block}
footer .logo-img{height:48px}
@media (max-width:900px){.logo-img{height:40px}footer .logo-img{height:40px}}
.nav-links{display:flex;gap:6px;align-items:center;justify-content:center;flex:1;list-style:none}
.nav-links a{font-size:13px;color:var(--ink-soft);font-weight:600;transition:color .2s;white-space:nowrap;padding:10px 8px;line-height:1.2}
.nav-links a:hover,.nav-links a.active{color:var(--brand)}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.lang-switch{display:flex;flex-direction:column;gap:2px;font-size:11px;border:1px solid var(--line);border-radius:4px;padding:6px 8px;background:var(--surface)}
.lang-switch a{padding:0;color:var(--ink-soft);font-weight:600;line-height:1.1;transition:color .2s}
.lang-switch a:hover,.lang-switch a.active{color:var(--brand)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 16px;border-radius:8px;
  background:var(--brand);color:#fff;font-weight:600;font-size:13px;
  transition:transform .2s,box-shadow .2s,background .2s;
  border:none;cursor:pointer;white-space:nowrap;height:40px;flex-shrink:0;
}
.btn:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow)}
.nav-links .btn{color:#fff;text-align:center;justify-content:center}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{background:var(--brand-deep);color:#fff}
.burger{display:none;background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px;flex-shrink:0}
.burger span{width:22px;height:2px;background:var(--ink);display:block;transition:.3s}

/* ---------- HERO ---------- */
.hero{padding:80px 0 120px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:80px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);font-weight:600;margin-bottom:20px}
.eyebrow::before{content:"";width:30px;height:1px;background:var(--brand)}
h1{font-family:'Open Sans',system-ui,sans-serif;font-weight:600;font-size:clamp(40px,5.5vw,68px);line-height:1.05;letter-spacing:-.02em;margin-bottom:24px}
h1 em{font-style:italic;color:var(--brand);font-weight:400}
.lead{font-size:19px;color:var(--ink-soft);max-width:520px;margin-bottom:36px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{display:flex;gap:40px;margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}
.hero-meta div b{display:block;font-family:'Open Sans',system-ui,sans-serif;font-size:32px;color:var(--brand);line-height:1}
.hero-meta div span{font-size:13px;color:var(--ink-soft);margin-top:4px;display:block}

/* Hero visual */
.hero-visual{position:relative;min-height:600px;max-width:480px;margin-left:auto;display:flex;align-items:flex-start;justify-content:center}
.umbrella{position:absolute;inset:0;display:grid;place-items:center}
.umbrella svg{width:100%;height:auto;filter:drop-shadow(0 30px 40px rgba(63,142,62,.18))}
.hero-image{position:relative;z-index:2;max-width:100%;height:auto;max-height:550px;width:auto;object-fit:contain;filter:drop-shadow(0 20px 40px rgba(0,0,0,.1))}
.hero-blob{
  position:absolute;inset:0;width:320px;height:480px;top:50px;left:50%;transform:translateX(-50%);
  background:radial-gradient(circle at 30% 30%,#dff0df 0%,transparent 60%),
             radial-gradient(circle at 70% 70%,#e6ebe6 0%,transparent 55%);
  z-index:1;border-radius:40% 60% 70% 30% / 40% 50% 60% 50%;opacity:.6;
}

/* ---------- SECTION BASICS ---------- */
section{padding:100px 0}
.sec-head{max-width:720px;margin-bottom:60px}
.sec-head h2{font-family:'Open Sans',system-ui,sans-serif;font-size:clamp(30px,3.6vw,46px);font-weight:600;letter-spacing:-.015em;line-height:1.1;margin-bottom:16px}
.sec-head p{color:var(--ink-soft);font-size:17px}

/* ---------- Image Placeholders ---------- */
.ph{
  background:linear-gradient(135deg,var(--muted) 0%,#e8ebe8 100%);
  border:2px dashed var(--line);
  border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;
  color:var(--ink-soft);
  font-size:13px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;
  position:relative;overflow:hidden;
  min-height:200px;
  aspect-ratio:4/3;
}
.ph::before{
  content:"";
  position:absolute;top:50%;left:50%;
  width:40px;height:40px;
  border:2px solid var(--brand-2);border-radius:50%;
  transform:translate(-50%,calc(-50% - 18px));
  opacity:.5;
}
.ph::after{
  content:"";
  position:absolute;top:50%;left:50%;
  width:18px;height:18px;background:var(--brand-2);
  transform:translate(-50%,calc(-50% - 18px)) rotate(45deg);
  opacity:.3;clip-path:polygon(0 100%,100% 100%,50% 0);
}
.ph span{position:relative;z-index:2;padding-top:48px;text-align:center;color:var(--ink-soft)}
.ph.tall{aspect-ratio:3/4}
.ph.wide{aspect-ratio:16/9}
.ph.square{aspect-ratio:1/1;background-size:contain !important;background-repeat:no-repeat !important}

/* ---------- ABOUT ---------- */
#about{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
#about .eyebrow{display:flex;justify-content:center;width:100%;margin-bottom:12px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.about-grid p{color:var(--ink-soft);font-size:17px;margin-bottom:20px}
.timeline{display:flex;flex-direction:column;gap:28px;border-left:2px solid var(--line);padding-left:28px;position:relative}
.tl-item{position:relative}
.tl-item::before{content:"";position:absolute;left:-37px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--bg);border:2px solid var(--brand)}
.tl-item b{display:block;font-family:'Open Sans',system-ui,sans-serif;font-size:22px;color:var(--brand);margin-bottom:4px}
.tl-item span{color:var(--ink-soft);font-size:15px}

/* ---------- CARDS (Services, References, Downloads) ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cards.two{grid-template-columns:repeat(2,1fr)}
.cards.four{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:36px 30px;
  transition:transform .3s,box-shadow .3s,border-color .3s;
  position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand-2)}
.card .icon{
  width:52px;height:52px;border-radius:12px;
  background:linear-gradient(135deg,#eef5fb,var(--accent-soft));
  display:grid;place-items:center;margin-bottom:22px;
  color:var(--brand);
}
.card h3{font-family:'Open Sans',system-ui,sans-serif;font-size:22px;font-weight:600;margin-bottom:10px;letter-spacing:-.01em}
.card p{color:var(--ink-soft);font-size:15px;line-height:1.6}
.card-list{list-style:none;margin-top:18px;display:flex;flex-wrap:wrap;gap:6px}
.card-list li{font-size:12px;padding:4px 10px;background:var(--muted);border-radius:999px;color:var(--ink-soft)}

/* ---------- PRINT SHOWCASE ---------- */
#print{background:linear-gradient(135deg,var(--brand-deep),var(--brand));color:#fff;padding:120px 0}
#print .sec-head h2{color:#fff}
#print .sec-head p{color:rgba(255,255,255,.8)}
#print .eyebrow{color:var(--accent)}
#print .eyebrow::before{background:var(--accent)}
.print-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.swatch{
  aspect-ratio:3/4;border-radius:var(--radius);
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:20px;color:#fff;font-weight:500;font-size:14px;
  position:relative;overflow:hidden;
  transition:transform .3s;
  background:rgba(255,255,255,.08);
  border:1px dashed rgba(255,255,255,.25);
}
.swatch img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.swatch:hover{transform:scale(1.03);background:rgba(255,255,255,.12)}
.swatch span{position:relative;z-index:2;opacity:.95}
.swatch small{display:block;font-size:11px;opacity:.7;letter-spacing:.1em;text-transform:uppercase;margin-bottom:6px;position:relative;z-index:2}

/* ---------- CONTACT ---------- */
#contact{background:var(--surface);border-top:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px}
.contact-info h2{margin-bottom:16px;font-family:'Open Sans',system-ui,sans-serif;font-size:clamp(30px,3.6vw,46px);font-weight:600;letter-spacing:-.015em;line-height:1.1}
.contact-info p{color:var(--ink-soft);font-size:17px;margin-bottom:36px;max-width:440px}
.info-block{display:flex;flex-direction:column;gap:20px}
.info-row{display:flex;gap:16px;align-items:flex-start}
.info-icon{width:40px;height:40px;border-radius:10px;background:var(--muted);display:grid;place-items:center;color:var(--brand);flex-shrink:0}
.info-row b{display:block;font-size:14px;color:var(--ink-soft);margin-bottom:2px;font-weight:500}
.info-row a,.info-row span{font-size:16px;color:var(--ink)}
form{display:flex;flex-direction:column;gap:16px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{font-size:13px;color:var(--ink-soft);font-weight:500;display:block;margin-bottom:6px}
input,textarea,select{
  width:100%;padding:14px 16px;border:1px solid var(--line);
  border-radius:10px;font-family:inherit;font-size:15px;
  background:var(--bg);transition:border-color .2s,background .2s;
  color:var(--ink);
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--brand);background:#fff}
textarea{min-height:120px;resize:vertical}

/* ---------- PAGE HEADER (subpages) ---------- */
.page-head{padding:80px 0 40px;background:var(--surface);border-bottom:1px solid var(--line)}
.page-head .eyebrow{margin-bottom:16px}
.page-head h1{font-size:clamp(36px,4.6vw,56px);margin-bottom:16px}
.page-head p{color:var(--ink-soft);font-size:19px;max-width:680px}

/* ---------- DOWNLOAD CARDS ---------- */
.download-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.dl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px;
  display:flex;flex-direction:column;gap:22px;
  transition:box-shadow .3s,border-color .3s;
}
.dl-card:hover{box-shadow:var(--shadow);border-color:var(--brand-2)}
.dl-card .ph{margin:0}
.dl-card h3{font-family:'Open Sans',system-ui,sans-serif;font-size:22px;font-weight:600;margin-bottom:8px}
.dl-card p{color:var(--ink-soft);font-size:15px;margin-bottom:16px}
.dl-meta{display:flex;gap:16px;font-size:13px;color:var(--ink-soft);margin-bottom:4px}
.dl-meta span{display:inline-flex;align-items:center;gap:4px}

/* ---------- REFERENCES ---------- */
.logo-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.logo-box{
  aspect-ratio:1/1;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:10px;
  display:grid;place-items:center;
  color:var(--ink-soft);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  transition:border-color .2s,background .2s;
  min-height:120px;
}
.logo-box:hover{border-color:var(--brand-2);background:#fff}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.quote{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px;
}
.quote p{font-family:'Open Sans',system-ui,sans-serif;font-size:20px;line-height:1.5;color:var(--ink);margin-bottom:20px;font-style:italic}
.quote-author{display:flex;align-items:center;gap:12px}
.quote-avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--brand-2),var(--brand));color:#fff;display:grid;place-items:center;font-weight:600;font-size:15px}
.quote-author b{display:block;font-size:14px}
.quote-author span{display:block;font-size:13px;color:var(--ink-soft)}

/* ---------- IMPRESSUM / LEGAL ---------- */
.legal{max-width:760px;margin:0 auto;padding:20px 0}
.legal h2{font-family:'Open Sans',system-ui,sans-serif;font-size:28px;font-weight:600;margin:40px 0 16px;color:var(--brand)}
.legal h2:first-of-type{margin-top:0}
.legal h3{font-size:16px;font-weight:600;margin:24px 0 8px}
.legal p{color:var(--ink-soft);font-size:16px;margin-bottom:14px;line-height:1.7}
.legal strong{color:var(--ink)}
.legal a{color:var(--brand);text-decoration:underline}

/* ---------- FOOTER ---------- */
footer{background:var(--ink);color:rgba(255,255,255,.7);padding:60px 0 32px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
footer h4{color:#fff;font-size:14px;margin-bottom:16px;letter-spacing:.06em;text-transform:uppercase;font-weight:600}
footer ul{list-style:none;display:flex;flex-direction:column;gap:10px}
footer ul a,footer ul li{font-size:14px;transition:color .2s}
footer ul a:hover{color:#fff}
footer .logo{color:#fff;margin-bottom:16px}
footer .tag{font-size:14px;max-width:280px;margin-top:16px}
.foot-bot{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;font-size:13px;flex-wrap:wrap;gap:16px}

/* ---------- RESPONSIVE ---------- */
@media (max-width:900px){
  .hero{padding:60px 0 80px}
  .hero-grid,.about-grid,.contact-grid{grid-template-columns:1fr;gap:48px}
  .hero-visual{max-width:340px;margin:0 auto;min-height:500px}
  .hero-blob{width:280px;height:420px;top:40px}
  .cards,.cards.four{grid-template-columns:1fr 1fr}
  .print-grid,.logo-grid{grid-template-columns:1fr 1fr}
  .download-grid,.quote-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  section{padding:72px 0}
  #print{padding:80px 0}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--surface);flex-direction:column;padding:16px 24px;
    border-bottom:1px solid var(--line);gap:12px;align-items:flex-start;justify-content:flex-start;flex:none;
  }
  .nav-links a{padding:6px 0;font-size:13px;font-weight:500}
  .nav-links.open{display:flex}
  .burger{display:flex}
}
@media (max-width:560px){
  .cards,.cards.two,.print-grid,.logo-grid,.foot-grid,.form-row{grid-template-columns:1fr}
  .hero-meta{flex-direction:column;gap:20px}
  h1{font-size:40px