/* PDS Bau GmbH — style.css */
:root{
  --paper:#f1ece1; --paper-2:#e6dfce; --ink:#1b1d19; --mute:#64625a;
  --leaf:#2e5a3b; --forest:#17251c; --clay:#b9653f; --sage:#a9c995;
  --line:rgba(27,29,25,.2); --err:#9b2f1b;
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Hanken Grotesk",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --pad:clamp(20px,5vw,72px); --max:1240px; --ease:.3s cubic-bezier(.2,.6,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font:400 1.0625rem/1.7 var(--sans);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased}
svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--leaf);outline-offset:3px}
.skip{position:absolute;left:-999px}
.skip:focus{left:1rem;top:1rem;z-index:99;background:var(--ink);color:var(--paper);padding:.5rem 1rem}

h1,h2,h3{font-family:var(--serif);font-weight:350;line-height:1.08;letter-spacing:-.02em}
h1{font-size:clamp(3rem,7.4vw,6.4rem);line-height:.98;letter-spacing:-.035em}
h2{font-size:clamp(2rem,4.4vw,3.5rem)}
h3{font-size:1.45rem;line-height:1.2;letter-spacing:-.01em}

.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.label{font-size:.9rem;font-weight:600;color:var(--leaf);display:flex;align-items:center;gap:.8rem}
.label::before{content:"";width:32px;height:1px;background:currentColor}
.btn{display:inline-block;padding:.9rem 1.6rem;background:var(--ink);color:var(--paper);font:500 .95rem var(--sans);border:1px solid var(--ink);border-radius:2px;cursor:pointer;transition:background var(--ease),border-color var(--ease)}
.btn:hover{background:var(--leaf);border-color:var(--leaf)}
.btn--sm{padding:.55rem 1rem;font-size:.85rem}
.link{border-bottom:1px solid currentColor;padding-bottom:2px;font-weight:500;transition:color var(--ease)}
.link:hover{color:var(--leaf)}

/* Header */
.site-header{position:fixed;inset:0 0 auto;z-index:50;padding:1.4rem 0;border-bottom:1px solid transparent;transition:padding var(--ease),background var(--ease),border-color var(--ease)}
.site-header.scrolled{padding:.65rem 0;background:rgba(241,236,225,.96);border-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:2rem}
.logo{display:flex;align-items:baseline;gap:.45rem;font:600 1.3rem var(--serif);letter-spacing:-.01em;position:relative;z-index:2}
.logo i{width:9px;height:9px;background:var(--leaf);align-self:center}
.logo small{font:500 .72rem var(--sans);color:var(--mute)}
.menu{display:flex;align-items:center;gap:2rem;font-size:.92rem}
.menu a:not(.btn){position:relative;padding:.2rem 0}
.menu a:not(.btn)::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--leaf);transform:scaleX(0);transform-origin:left;transition:transform var(--ease)}
.menu a:not(.btn):hover::after{transform:scaleX(1)}
.burger{display:none;position:relative;z-index:2;width:40px;height:40px;background:none;border:0;cursor:pointer}
.burger span{position:absolute;left:8px;right:8px;height:2px;background:var(--ink);transition:var(--ease)}
.burger span:first-child{top:15px}
.burger span:last-child{top:23px}
.burger[aria-expanded="true"] span:first-child{top:19px;transform:rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{top:19px;transform:rotate(-45deg)}

/* Hero */
.hero{padding:9.5rem 0 4.5rem}
.hero .wrap{display:grid;grid-template-columns:7fr 5fr;gap:clamp(2rem,5vw,5rem);align-items:end}
.hero h1{margin:1.5rem 0 1.75rem}
.lead{max-width:34rem;color:var(--mute);font-size:1.18rem}
.actions{display:flex;align-items:center;flex-wrap:wrap;gap:1.75rem;margin-top:2.25rem}
.hero-art{position:relative}
.hero-art svg{width:100%;height:auto}
.sand{fill:#dcd2bb}.forest{fill:var(--forest)}.clay{fill:var(--clay)}.paper{fill:var(--paper)}
.light-line,.dark-line{fill:none;stroke-width:1.5}
.light-line{stroke:var(--paper);stroke-opacity:.4}
.dark-line{stroke:var(--ink);stroke-opacity:.3}
.tag{position:absolute;left:-3rem;bottom:2.5rem;max-width:13.5rem;padding:1rem 1.2rem;background:var(--paper);border:1px solid var(--ink);font-size:.85rem;line-height:1.45}
.tag b{display:block;font:400 2.1rem/1.1 var(--serif)}
.strip{border-block:1px solid var(--line)}
.strip .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.5rem 2rem;padding-block:1rem;font-size:.88rem;color:var(--mute)}
.strip a:hover{color:var(--leaf)}

/* Sections */
.section{padding:clamp(4.5rem,9vw,8.5rem) 0}

/* About */
.about .wrap{display:grid;grid-template-columns:repeat(12,1fr);gap:3rem 2rem}
.about h2{grid-column:1/9;max-width:20ch}
.about-visual{grid-column:1/6;position:relative;margin-bottom:2rem}
.plate{aspect-ratio:4/5;background:repeating-linear-gradient(90deg,var(--forest) 0 16px,#223427 16px 32px);position:relative}
.plate::after{content:"";position:absolute;right:-1.75rem;bottom:-1.75rem;width:42%;aspect-ratio:1;background:var(--clay)}
.about-visual figcaption{margin-top:2.5rem;font-size:.8rem;color:var(--mute)}
.about-text{grid-column:7/13;align-self:start;max-width:34rem}
.about-text p+p{margin-top:1.1rem}
blockquote{margin:2.25rem 0;padding-left:1.4rem;border-left:2px solid var(--leaf);font:350 1.6rem/1.25 var(--serif);letter-spacing:-.01em}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;border-top:1px solid var(--ink);padding-top:1.25rem;font-size:.88rem;line-height:1.4;color:var(--mute)}
.facts b{display:block;font:400 1.35rem/1.2 var(--serif);color:var(--ink);margin-bottom:.2rem}

/* Services */
.services{background:var(--paper-2)}
.services .wrap{display:grid;grid-template-columns:4fr 8fr;gap:clamp(2rem,6vw,6rem)}
.services-intro{position:sticky;top:7rem;align-self:start}
.services-intro p{margin-top:1.25rem;color:var(--mute)}
.svc{display:grid;grid-template-columns:3rem 1fr 2.2rem;gap:1.5rem;align-items:start;padding:2rem 0;border-top:1px solid var(--ink);transition:padding var(--ease),background var(--ease)}
.svc:last-child{border-bottom:1px solid var(--ink)}
.svc:hover{padding-left:1rem;padding-right:1rem;background:var(--paper)}
.svc .n{font:400 1rem var(--serif);color:var(--leaf);padding-top:.25rem}
.svc p{margin-top:.5rem;color:var(--mute);max-width:36rem}
.svc svg{width:30px;height:30px;fill:none;stroke:var(--ink);stroke-width:1.3;stroke-linejoin:round}
.svc--lead{padding-block:2.75rem}
.svc--lead h3{font-size:clamp(1.8rem,3.2vw,2.6rem)}

/* Approach */
.why{background:var(--forest);color:var(--paper)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;margin-top:4rem}
.why-item{border-top:1px solid rgba(241,236,225,.35);padding-top:1.5rem}
.why-item:nth-child(even){margin-top:3.5rem}
.big{display:block;margin-bottom:1.25rem;font:300 clamp(3.5rem,6vw,5.5rem)/1 var(--serif);color:var(--sage)}
.why-item h3{margin-bottom:.6rem}
.why-item p{font-size:.98rem;color:rgba(241,236,225,.74)}

/* Contact */
.contact .wrap{display:grid;grid-template-columns:5fr 7fr;gap:clamp(2rem,6vw,6rem);align-items:start}
.info p{margin-top:1.25rem;color:var(--mute)}
.info dl{margin-top:2.5rem;border-top:1px solid var(--ink)}
.info dl div{display:grid;grid-template-columns:6.5rem 1fr;gap:1rem;padding:1rem 0;border-bottom:1px solid var(--line)}
.info dt{font-size:.85rem;font-weight:600;color:var(--mute);padding-top:.2rem}
form{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;padding:clamp(1.5rem,4vw,3rem);background:var(--paper-2);border-top:3px solid var(--leaf)}
.field{display:flex;flex-direction:column;gap:.35rem}
.field.full,.status{grid-column:1/-1}
label{font-size:.88rem;font-weight:600}
label span{font-weight:400;color:var(--mute)}
input,textarea{font:inherit;color:var(--ink);background:transparent;border:0;border-bottom:1px solid var(--ink);border-radius:0;padding:.6rem 0;transition:border-color var(--ease)}
textarea{resize:vertical;min-height:130px}
input:focus,textarea:focus{outline:0;border-color:var(--leaf);box-shadow:0 1px 0 var(--leaf)}
.invalid{border-color:var(--err)}
.err{min-height:1.2em;font-size:.82rem;color:var(--err)}
.field .btn{align-self:flex-start}
.status{font-size:.95rem}
.status:empty{display:none}
.status.ok{padding-left:.9rem;border-left:3px solid var(--leaf);color:var(--leaf)}
.status.bad{padding-left:.9rem;border-left:3px solid var(--err);color:var(--err)}

/* Footer */
footer{background:var(--ink);color:rgba(241,236,225,.75);padding:4.5rem 0 2rem;font-size:.93rem}
.foot{display:grid;grid-template-columns:2fr 1fr 1.4fr;gap:3rem}
.foot-logo{color:var(--paper);margin-bottom:1rem}
.foot-logo i{background:var(--sage)}
.foot-logo small{color:rgba(241,236,225,.6)}
.foot p{max-width:26rem}
footer h4{margin-bottom:1rem;font:600 .9rem var(--sans);color:var(--paper)}
footer li+li{margin-top:.4rem}
footer a{transition:color var(--ease)}
footer a:hover{color:var(--sage)}
.legal{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;margin-top:3.5rem;padding-top:1.5rem;border-top:1px solid rgba(241,236,225,.18);font-size:.84rem}
.legal-links{display:flex;gap:1.5rem}

/* Reveal on scroll (only when JS is running) */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}

/* Tablet */
@media (max-width:1024px){
  .about h2{grid-column:1/-1}
  .about-visual{grid-column:1/6}
  .about-text{grid-column:6/13}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .why-item:nth-child(even){margin-top:0}
  .why-item:nth-child(n+3){margin-top:1rem}
}

/* Mobile navigation and single-column layouts */
@media (max-width:860px){
  .burger{display:block}
  .menu{position:fixed;inset:0 0 auto;flex-direction:column;align-items:flex-start;gap:1.2rem;padding:6rem var(--pad) 2rem;background:var(--paper);border-bottom:1px solid var(--line);font-size:1.4rem;transform:translateY(-100%);visibility:hidden;transition:transform .4s ease,visibility .4s}
  .menu.open{transform:none;visibility:visible}
  .menu .btn{font-size:.95rem}
  .hero{padding-top:7.5rem}
  .hero .wrap,.services .wrap,.contact .wrap,.foot{grid-template-columns:1fr}
  .hero-art{max-width:30rem}
  .tag{left:1rem}
  .about .wrap{display:block}
  .about-visual{max-width:22rem;margin:3rem 0}
  .services-intro{position:static}
  .foot{gap:2rem}
}
@media (max-width:560px){
  .why-grid,form,.facts{grid-template-columns:1fr}
  .info dl div{grid-template-columns:1fr;gap:.2rem}
  .svc{grid-template-columns:2.2rem 1fr;gap:1rem}
  .svc svg{display:none}
  .legal{flex-direction:column}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms!important}
  .js .reveal{opacity:1;transform:none}
}