/* ============================================================
   Läer und Rahenbrock — modernized site
   Direction: editorial luxury / heritage Baukultur (est. 1908)
   ============================================================ */

:root{
  --bg:      oklch(96.5% 0.004 250);
  --surface: oklch(99% 0.003 250);
  --panel:   oklch(94% 0.005 250);
  --fg:      oklch(22% 0.012 256);
  --muted:   oklch(46% 0.012 256);
  --border:  oklch(88% 0.006 250);
  --accent:  oklch(48% 0.155 256);
  --accent-d:oklch(41% 0.15 258);
  --accent-l:oklch(63% 0.115 252);
  --ink:     oklch(18% 0.022 258);
  --ink-2:   oklch(24% 0.022 258);

  --font-display: 'Cormorant Garamond', 'Iowan Old Style', Georgia, serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, Roboto, sans-serif;

  --maxw: 1240px;
  --gut: clamp(20px, 5vw, 64px);
  --sp-section: clamp(72px, 11vw, 168px);
  --ease: cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--fg);
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:#fff}

/* ---- type ---- */
.display{
  font-family:var(--font-display);
  font-weight:500;
  line-height:1.02;
  letter-spacing:-.01em;
  color:var(--fg);
}
h1.display{font-size:clamp(44px,7vw,96px)}
h2.display{font-size:clamp(34px,5vw,64px)}
h3.display{font-size:clamp(24px,3vw,34px);line-height:1.1}
.eyebrow{
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--accent);
  display:inline-flex;align-items:center;gap:.7em;
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;display:inline-block}
.eyebrow.on-dark{color:var(--accent-l)}
.lead{font-size:clamp(18px,1.6vw,21px);color:var(--muted);max-width:58ch;line-height:1.7}
.muted{color:var(--muted)}
.serif-num{font-family:var(--font-display);font-weight:500;letter-spacing:-.02em}

/* ---- layout ---- */
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
.section{padding-block:var(--sp-section)}
.section.tight{padding-block:clamp(48px,7vw,96px)}
.dark{background:var(--ink);color:oklch(90% 0.006 250)}
.dark .display{color:oklch(96% 0.005 250)}
.dark .lead,.dark .muted{color:oklch(72% 0.012 250)}
.surface{background:var(--surface)}
.rule{height:1px;background:var(--border);border:0}

/* ---- buttons ---- */
.btn{
  display:inline-flex;align-items:center;gap:.7em;
  font-size:14px;font-weight:600;letter-spacing:.02em;
  padding:15px 26px;border:1px solid var(--fg);
  background:var(--fg);color:var(--bg);
  border-radius:2px;cursor:pointer;
  transition:transform .4s var(--ease),background .25s,color .25s,border-color .25s;
}
.btn .arr{transition:transform .4s var(--ease)}
.btn:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn:hover .arr{transform:translateX(4px)}
.btn.ghost{background:transparent;color:var(--fg)}
.btn.ghost:hover{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.btn.light{background:#fff;color:var(--ink);border-color:#fff}
.btn.light:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn.outline-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.tlink{
  display:inline-flex;align-items:center;gap:.55em;
  font-size:14px;font-weight:600;letter-spacing:.02em;
  border-bottom:1px solid var(--accent);padding-bottom:3px;color:var(--fg);
  transition:gap .35s var(--ease),color .25s;
}
.tlink .arr{color:var(--accent);transition:transform .35s var(--ease)}
.tlink:hover{color:var(--accent)}
.tlink:hover .arr{transform:translateX(4px)}

/* ============ HEADER ============ */
.site-head{
  position:fixed;inset:0 0 auto 0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--gut);
  transition:background .35s,backdrop-filter .35s,padding .35s,border-color .35s;
  border-bottom:1px solid transparent;
}
.site-head.scrolled{
  background:color-mix(in oklch,var(--bg) 88%,transparent);
  backdrop-filter:blur(14px) saturate(1.1);
  -webkit-backdrop-filter:blur(14px) saturate(1.1);
  border-bottom-color:var(--border);
  padding-block:12px;
}
.brand{display:flex;align-items:center;gap:13px;z-index:62}
.brand .logo{height:52px;width:auto;flex:none;transition:height .35s var(--ease)}
.brand .logo-white{display:none}
.site-head.scrolled .brand .logo{height:44px}
/* On the transparent hero header, swap to the all-white logo */
.head-light:not(.scrolled) .brand .logo-color{display:none}
.head-light:not(.scrolled) .brand .logo-white{display:block}
.head-light:not(.scrolled) .nav a{color:rgba(255,255,255,.85)}
.head-light:not(.scrolled) .nav a:hover{color:#fff}
.head-light:not(.scrolled) .burger span{background:#fff}

.nav{display:flex;align-items:center;gap:34px}
.nav a{font-size:14.5px;font-weight:500;letter-spacing:.01em;position:relative;padding:4px 0;color:var(--fg)}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1.5px;background:var(--accent);transition:width .3s var(--ease)}
.nav a:hover::after,.nav a[aria-current="page"]::after{width:100%}
.nav a[aria-current="page"]{color:var(--accent)}
.nav .nav-cta{margin-left:6px}

.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;z-index:62}
.burger span{width:26px;height:2px;background:var(--fg);transition:.3s var(--ease)}
.mobile-nav{
  position:fixed;inset:0;z-index:61;background:var(--ink);
  display:flex;flex-direction:column;justify-content:center;gap:6px;
  padding:0 var(--gut);
  transform:translateY(-100%);transition:transform .5s var(--ease);
}
.mobile-nav.open{transform:translateY(0)}
.mobile-nav a{
  font-family:var(--font-display);font-size:clamp(34px,9vw,56px);
  color:oklch(94% 0 0);padding:8px 0;font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.08);
  display:flex;align-items:baseline;gap:16px;
}
.mobile-nav a .n{font-family:var(--font-body);font-size:13px;color:var(--accent);letter-spacing:.2em}
.mobile-nav a:hover{color:var(--accent)}
.mobile-nav .mfoot{margin-top:34px;color:rgba(255,255,255,.6);font-size:14px;line-height:2}
.mobile-nav .mfoot a{font-family:var(--font-body);font-size:15px;color:#fff;display:inline}
body.menu-open{overflow:hidden}
body.menu-open .burger.in-mobile span{background:#fff}
body.menu-open .burger.in-mobile span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.menu-open .burger.in-mobile span:nth-child(2){opacity:0}
body.menu-open .burger.in-mobile span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ HERO ============ */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;overflow:hidden;background:var(--ink)}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img,.hero-media video{
  width:100%;height:100%;object-fit:cover;
  animation:kenburns 22s ease-in-out infinite alternate;
}
@keyframes kenburns{from{transform:scale(1.04) translate(0,0)}to{transform:scale(1.16) translate(-1.5%,-1.5%)}}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,13,12,.55) 0%,rgba(15,13,12,.12) 38%,rgba(15,13,12,.72) 100%);
}
.hero-inner{position:relative;z-index:2;width:100%;max-width:var(--maxw);margin-inline:auto;padding:0 var(--gut) clamp(56px,9vh,120px);color:#fff}
.hero h1{color:#fff;max-width:16ch}
.hero .hero-sub{margin-top:24px;max-width:52ch;color:rgba(255,255,255,.85);font-size:clamp(17px,1.5vw,20px);line-height:1.7}
.hero .hero-cta{margin-top:38px;display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{
  position:absolute;left:var(--gut);right:var(--gut);top:clamp(90px,14vh,140px);
  z-index:2;display:flex;justify-content:space-between;color:rgba(255,255,255,.7);
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;
}
.scroll-cue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;color:rgba(255,255,255,.7);font-size:11px;letter-spacing:.25em;text-transform:uppercase;display:flex;flex-direction:column;align-items:center;gap:10px}
.scroll-cue i{width:1px;height:34px;background:linear-gradient(rgba(255,255,255,.7),transparent);display:block;animation:cue 2s ease-in-out infinite}
@keyframes cue{0%,100%{transform:scaleY(.4);opacity:.4;transform-origin:top}50%{transform:scaleY(1);opacity:1;transform-origin:top}}

/* page hero (sub pages) */
.page-hero{position:relative;min-height:62vh;display:flex;align-items:flex-end;overflow:hidden;background:var(--ink)}
.page-hero .hero-media::after{background:linear-gradient(180deg,rgba(15,13,12,.5),rgba(15,13,12,.78))}
.page-hero .hero-inner{padding-bottom:clamp(44px,7vh,80px)}
.page-hero h1{color:#fff}
.page-hero .crumb{color:rgba(255,255,255,.65);font-size:13px;letter-spacing:.06em;margin-bottom:18px}
.page-hero .crumb a:hover{color:#fff}

/* ============ generic blocks ============ */
.kicker-row{display:flex;flex-direction:column;gap:18px;max-width:62ch}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,6vw,96px);align-items:center}
.two-col.top{align-items:start}
.split-head{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(24px,5vw,80px);align-items:end;margin-bottom:clamp(40px,5vw,72px)}
@media(max-width:860px){.two-col,.split-head{grid-template-columns:1fr;gap:32px}.split-head{align-items:start}}

.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border:1px solid var(--border)}
.stat{background:var(--bg);padding:clamp(24px,3vw,40px) clamp(20px,2.5vw,32px)}
.dark .stat{background:var(--ink-2)}
.dark .stat-row{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.08)}
.stat .v{font-family:var(--font-display);font-size:clamp(40px,5vw,68px);font-weight:500;line-height:1;letter-spacing:-.02em}
.stat .v .u{font-size:.45em;color:var(--accent);margin-left:.1em}
.stat .k{margin-top:12px;font-size:13.5px;color:var(--muted);letter-spacing:.02em}
.dark .stat .k{color:oklch(72% 0.012 250)}
@media(max-width:760px){.stat-row{grid-template-columns:1fr 1fr}}

/* service list */
.svc-list{border-top:1px solid var(--border)}
.svc{
  display:grid;grid-template-columns:64px 1fr auto;gap:clamp(16px,3vw,40px);align-items:start;
  padding:clamp(26px,3.4vw,44px) 0;border-bottom:1px solid var(--border);
  transition:padding-left .4s var(--ease);position:relative;
}
.svc::before{content:"";position:absolute;left:0;top:0;height:100%;width:0;background:var(--accent);opacity:.05;transition:width .4s var(--ease);z-index:-1}
.svc:hover{padding-left:18px}
.svc:hover::before{width:100%}
.svc .num{font-family:var(--font-display);font-size:20px;color:var(--accent);font-weight:600;padding-top:4px}
.svc h3{font-family:var(--font-display);font-size:clamp(23px,2.6vw,32px);font-weight:500;line-height:1.1}
.svc p{margin-top:10px;color:var(--muted);max-width:60ch;font-size:15.5px}
.svc .svc-go{align-self:center;color:var(--accent);font-size:22px;opacity:0;transform:translateX(-8px);transition:.4s var(--ease)}
.svc:hover .svc-go{opacity:1;transform:translateX(0)}
.svc .svc-tag{align-self:center;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);border:1px solid var(--border);padding:6px 12px;border-radius:2px;white-space:nowrap}
.svc:hover .svc-tag{border-color:var(--accent);color:var(--accent)}
@media(max-width:680px){.svc{grid-template-columns:40px 1fr}.svc .svc-go,.svc .svc-tag{display:none}}

/* teaser cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,2.5vw,32px)}
@media(max-width:900px){.cards{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.cards{grid-template-columns:1fr}}
.card{position:relative;overflow:hidden;background:var(--surface);border:1px solid var(--border)}
.card .ph{aspect-ratio:4/3;overflow:hidden}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease)}
.card:hover .ph img{transform:scale(1.06)}
.card .cb{padding:24px 24px 28px}
.card .cb .ck{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:600}
.card .cb h3{font-family:var(--font-display);font-size:24px;font-weight:500;margin-top:10px;line-height:1.12}
.card .cb p{margin-top:10px;color:var(--muted);font-size:15px}

/* feature image block */
.figure{position:relative;overflow:hidden}
.figure img{width:100%;height:100%;object-fit:cover}
.figure.tall img{aspect-ratio:3/4}
.figure.wide img{aspect-ratio:16/10}
.figure .cap{position:absolute;left:0;bottom:0;padding:14px 18px;background:linear-gradient(transparent,rgba(0,0,0,.6));color:#fff;font-size:12.5px;letter-spacing:.04em;width:100%}

/* gallery */
.gal{columns:3;column-gap:14px}
@media(max-width:900px){.gal{columns:2}}
@media(max-width:560px){.gal{columns:1}}
.gal figure{break-inside:avoid;margin-bottom:14px;position:relative;overflow:hidden;cursor:zoom-in;background:var(--ink)}
.gal figure img{width:100%;transition:transform 1s var(--ease),opacity .6s}
.gal figure:hover img{transform:scale(1.05)}
.gal figure figcaption{
  position:absolute;inset:auto 0 0 0;padding:30px 16px 14px;
  background:linear-gradient(transparent,rgba(15,13,12,.78));
  color:#fff;font-size:13px;letter-spacing:.03em;
  opacity:0;transform:translateY(8px);transition:.4s var(--ease);
}
.gal figure figcaption b{font-family:var(--font-display);font-weight:600;font-size:18px;display:block;margin-bottom:2px}
.gal figure:hover figcaption{opacity:1;transform:translateY(0)}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(12,10,9,.94);display:none;align-items:center;justify-content:center;padding:5vw;opacity:0;transition:opacity .3s}
.lightbox.open{display:flex;opacity:1}
.lightbox img{max-width:92vw;max-height:86vh;object-fit:contain;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lightbox .lb-cap{position:absolute;bottom:24px;left:0;right:0;text-align:center;color:rgba(255,255,255,.8);font-size:14px;letter-spacing:.04em}
.lightbox .lb-x,.lightbox .lb-nav{position:absolute;background:none;border:0;color:#fff;cursor:pointer;font-size:30px;width:56px;height:56px;display:grid;place-items:center;opacity:.7;transition:opacity .2s}
.lightbox .lb-x:hover,.lightbox .lb-nav:hover{opacity:1}
.lightbox .lb-x{top:18px;right:18px;font-size:34px}
.lightbox .lb-prev{left:10px;top:50%;transform:translateY(-50%)}
.lightbox .lb-next{right:10px;top:50%;transform:translateY(-50%)}

/* process steps */
.steps{display:grid;gap:1px;background:var(--border);border-block:1px solid var(--border)}
.step{background:var(--bg);display:grid;grid-template-columns:120px 1fr;gap:clamp(20px,4vw,60px);padding:clamp(30px,4vw,56px) 0}
.step .sn{font-family:var(--font-display);font-size:clamp(48px,6vw,86px);font-weight:500;color:var(--accent);line-height:.9;letter-spacing:-.03em;padding-left:clamp(0px,1vw,8px)}
.step h3{font-family:var(--font-display);font-size:clamp(24px,2.8vw,34px);font-weight:500;line-height:1.1}
.step p{margin-top:12px;color:var(--muted);max-width:60ch}
@media(max-width:640px){.step{grid-template-columns:1fr;gap:10px}.step .sn{font-size:42px}}

/* quote */
.quote{max-width:24ch}
.quote blockquote{font-family:var(--font-display);font-size:clamp(28px,4vw,52px);font-weight:500;line-height:1.18;letter-spacing:-.01em}
.quote .src{margin-top:26px;font-size:14px;letter-spacing:.04em;color:var(--muted)}
.quote .src b{color:var(--fg);font-weight:600}

/* ============ FORMS ============ */
.form{display:grid;gap:22px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;font-weight:600;letter-spacing:.04em}
.field label .req{color:var(--accent)}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:16px;color:var(--fg);
  background:var(--surface);border:1px solid var(--border);
  padding:14px 16px;border-radius:2px;width:100%;
  transition:border-color .25s,box-shadow .25s;
}
.field textarea{resize:vertical;min-height:130px}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in oklch,var(--accent) 18%,transparent)}
.field.bad input,.field.bad textarea,.field.bad select{border-color:var(--accent)}
.field .err{font-size:12.5px;color:var(--accent);display:none}
.field.bad .err{display:block}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media(max-width:560px){.row2{grid-template-columns:1fr}}
.check{display:flex;gap:12px;align-items:flex-start;font-size:13.5px;color:var(--muted);line-height:1.5}
.check input{width:18px;height:18px;accent-color:var(--accent);margin-top:2px;flex:none}
.form-ok{
  display:none;padding:28px;border:1px solid var(--accent);
  background:color-mix(in oklch,var(--accent) 7%,var(--surface));
  border-radius:2px;
}
.form-ok.show{display:block}
.form-ok b{font-family:var(--font-display);font-size:24px;font-weight:600;display:block;margin-bottom:8px}

/* contact info list */
.cinfo{display:grid;gap:26px}
.cinfo .ci{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;padding-bottom:24px;border-bottom:1px solid var(--border)}
.cinfo .ci:last-child{border-bottom:0}
.cinfo .ci .ic{width:44px;height:44px;border:1px solid var(--border);display:grid;place-items:center;color:var(--accent);border-radius:2px;flex:none}
.cinfo .ci .k{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:5px}
.cinfo .ci .val{font-size:17px}
.cinfo .ci .val a:hover{color:var(--accent)}

/* map */
.mapfig{position:relative;aspect-ratio:16/9;overflow:hidden;border:1px solid var(--border);background:var(--panel)}
.mapfig iframe{width:100%;height:100%;border:0;filter:grayscale(.25) contrast(1.02)}

/* ============ FOOTER ============ */
.site-foot{background:var(--ink);color:oklch(80% 0.008 250);padding-top:clamp(64px,8vw,110px)}
.foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:clamp(28px,4vw,56px);padding-bottom:60px;border-bottom:1px solid rgba(255,255,255,.1)}
@media(max-width:860px){.foot-top{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-top{grid-template-columns:1fr}}
.foot-top .display{color:#fff}
.foot-col h4{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:oklch(64% 0.012 250);margin-bottom:18px}
.foot-col a,.foot-col p{display:block;color:oklch(82% 0.008 250);font-size:15px;line-height:1.5;margin-bottom:11px}
.foot-col a:hover{color:var(--accent)}
.foot-brand .display{font-size:30px;margin-bottom:14px}
.foot-logo{height:58px;width:auto;margin-bottom:20px}
.foot-brand p{max-width:34ch;color:oklch(70% 0.012 250);font-size:15px}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding-block:26px;font-size:13px;color:oklch(60% 0.012 250)}
.foot-bottom a:hover{color:#fff}

/* ---- reveal ---- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-media img,.hero-media video{animation:none;transform:scale(1.05)}
  .scroll-cue i{animation:none}
}

/* ---- responsive nav ---- */
@media(max-width:920px){
  .nav .nav-link,.nav .nav-cta{display:none}
  .burger{display:flex}
}