/* ---------- Design tokens ---------- */
:root{
  --bg: #f7f5f1;
  --bg-alt: #efebe3;
  --ink: #201d18;
  --ink-soft: #4b463e;
  --line: #ddd6c8;
  --accent: #8a5a3b;
  --accent-ink: #fff8f0;
  --card: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 30px -12px rgba(32,29,24,.18);
  --maxw: 1180px;
  --font-serif: 'Fraunces', Georgia, serif;
  --font-sans: 'Inter', system-ui, sans-serif;
}

:root[data-theme="dark"]{
  --bg: #171511;
  --bg-alt: #1e1b16;
  --ink: #f3efe6;
  --ink-soft: #c9c1b2;
  --line: #38332a;
  --accent: #d99a68;
  --accent-ink: #201a12;
  --card: #201d18;
  --shadow: 0 10px 30px -12px rgba(0,0,0,.5);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg: #171511;
    --bg-alt: #1e1b16;
    --ink: #f3efe6;
    --ink-soft: #c9c1b2;
    --line: #38332a;
    --accent: #d99a68;
    --accent-ink: #201a12;
    --card: #201d18;
    --shadow: 0 10px 30px -12px rgba(0,0,0,.5);
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  transition:background .3s ease, color .3s ease;
}
h1,h2,h3{font-family:var(--font-serif);font-weight:600;line-height:1.1;margin:0 0 .5em;color:var(--ink)}
p{margin:0 0 1em;color:var(--ink-soft)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
em{font-style:italic;color:var(--accent)}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- Skip link ---------- */
.skip-link{
  position:absolute;left:16px;top:-60px;z-index:300;
  background:var(--ink);color:var(--bg);padding:12px 20px;border-radius:8px;
  font-size:.9rem;font-weight:600;transition:top .2s ease;
}
.skip-link:focus{top:16px}

/* ---------- Progress bar ---------- */
.progress-bar{
  position:fixed;top:0;left:0;height:3px;width:0%;
  background:var(--accent);z-index:200;transition:width .1s linear;
}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease, background .3s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-serif);font-weight:600;font-size:1.05rem}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;
  background:var(--ink);color:var(--bg);font-size:.8rem;letter-spacing:.02em;flex:none;
}
.brand-mark.small{width:28px;height:28px;font-size:.7rem;margin-right:8px;vertical-align:middle}
.main-nav{display:flex;align-items:center;gap:28px;font-size:.95rem;margin-left:auto}
.main-nav a{color:var(--ink-soft);transition:color .2s}
.main-nav a:hover{color:var(--ink)}
.nav-cta{
  padding:9px 18px;border-radius:999px;background:var(--ink);color:var(--bg)!important;
}
.nav-cta:hover{background:var(--accent)}

.theme-toggle{
  display:flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--ink);
  cursor:pointer;margin-left:16px;flex:none;transition:border-color .2s ease;
}
.theme-toggle:hover{border-color:var(--accent)}
.theme-toggle svg{width:19px;height:19px}
.theme-toggle .icon-moon{display:none}
:root[data-theme="dark"] .theme-toggle .icon-sun{display:none}
:root[data-theme="dark"] .theme-toggle .icon-moon{display:block}

.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:32px;height:32px;background:none;border:none;cursor:pointer;flex:none}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease, opacity .25s ease}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--ink);color:var(--bg)}
.btn-primary:hover{background:var(--accent)}
.btn-ghost{border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-block{width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;padding:150px 0 120px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(600px 400px at 85% 10%, color-mix(in srgb, var(--accent) 18%, transparent), transparent),
    linear-gradient(180deg, var(--bg-alt), var(--bg) 70%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg, black, transparent 80%);
}
.hero-inner{max-width:820px}
.eyebrow{
  font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);font-weight:600;margin-bottom:16px;
}
.hero h1{font-size:clamp(2.6rem, 5.4vw, 4.4rem);letter-spacing:-.01em}
.hero-lead{font-size:1.2rem;max-width:560px;margin-top:20px}
.hero-actions{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap}
.hero-trust{font-size:.85rem;margin-top:28px;color:var(--ink-soft);opacity:.85}

.hero-scroll{
  position:absolute;bottom:36px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--ink-soft)
}
.hero-scroll span{width:1px;height:36px;background:var(--line);position:relative;overflow:hidden}
.hero-scroll span::after{
  content:"";position:absolute;top:-100%;left:0;width:100%;height:100%;background:var(--accent);
  animation:scrollLine 1.8s ease-in-out infinite;
}
.hero-scroll small{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase}
@keyframes scrollLine{0%{top:-100%}50%{top:0}100%{top:100%}}

/* ---------- Stats ---------- */
.stats{padding:0 0 40px}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:36px;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);
  border:1px solid var(--line);
}
.stat{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px}
.stat-num{font-family:var(--font-serif);font-size:2.4rem;font-weight:600;color:var(--ink)}
.stat-suffix{font-family:var(--font-serif);font-size:2.4rem;font-weight:600;color:var(--accent);margin-left:-6px}
.stat-label{font-size:.85rem;color:var(--ink-soft)}

/* ---------- Sections ---------- */
.section{padding:110px 0}
.section-head{max-width:600px;margin:0 auto 56px;text-align:center}
.section-head h2{font-size:clamp(1.9rem, 3.4vw, 2.6rem)}
.section-lead{font-size:1.02rem}
.leistungen .section-head, .projekte .section-head{margin-left:0;margin-right:0;text-align:left}
.leistungen .section-lead, .projekte .section-lead{max-width:640px}

/* ---------- Leistungen ---------- */
.leistungen-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.leistung-card{
  display:flex;flex-direction:column;gap:14px;padding:32px 26px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.leistung-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--accent)}
.leistung-icon{width:48px;height:48px;color:var(--accent)}
.leistung-icon svg{width:100%;height:100%}
.leistung-card h3{font-size:1.15rem;margin-bottom:2px}
.leistung-card p{font-size:.92rem;flex:1}
.leistung-link{font-size:.85rem;font-weight:600;color:var(--ink)}

/* ---------- Filter bar ---------- */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:40px}
.filter-btn{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);
  background:transparent;color:var(--ink-soft);font-size:.88rem;font-weight:600;
  cursor:pointer;transition:all .2s ease;
}
.filter-btn:hover{border-color:var(--ink)}
.filter-btn.is-active{background:var(--ink);color:var(--bg);border-color:var(--ink)}

/* ---------- Projekte ---------- */
.projekte-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.projekt-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .3s ease, box-shadow .3s ease;cursor:pointer;
}
.projekt-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.projekt-card:hover .projekt-more{color:var(--accent)}
.projekt-card.is-hidden{display:none}
.projekt-media{
  aspect-ratio:4/3;position:relative;overflow:hidden;
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--tint,#8a7b68) 55%, var(--bg-alt)), color-mix(in srgb, var(--tint,#8a7b68) 20%, var(--bg)));
  display:flex;align-items:flex-end;padding:18px;
}
.projekt-media:has(img)::before{content:none}
.projekt-media::before{
  content:"";position:absolute;inset:0;opacity:.25;
  background-image:linear-gradient(45deg, rgba(255,255,255,.4) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.4) 50%, rgba(255,255,255,.4) 75%, transparent 75%, transparent);
  background-size:22px 22px;
}
.projekt-media img{
  width:100%;height:100%;object-fit:cover;position:absolute;inset:0;
  transition:transform .5s ease;
}
.projekt-card:hover .projekt-media img{transform:scale(1.05)}
.projekt-media span{
  position:relative;font-family:var(--font-serif);font-size:.95rem;color:#fff;
  text-shadow:0 2px 8px rgba(0,0,0,.35);
}
.projekt-body{padding:22px 22px 26px}
.projekt-tag{
  display:inline-block;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--accent);font-weight:700;margin-bottom:8px;
}
.projekt-body h3{font-size:1.2rem;margin-bottom:6px}
.projekt-body p{font-size:.92rem;margin-bottom:8px}
.projekt-meta{font-size:.8rem;color:var(--ink-soft);opacity:.8;display:block;margin-bottom:8px}
.projekt-more{font-size:.85rem;font-weight:600;color:var(--ink-soft);transition:color .2s ease}

/* ---------- Ablauf ---------- */
.ablauf{background:var(--bg-alt)}
.ablauf-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.ablauf-step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;position:relative;
}
.ablauf-num{
  font-family:var(--font-serif);font-size:1.6rem;color:var(--accent);font-weight:600;
  display:block;margin-bottom:12px;
}
.ablauf-step h3{font-size:1.05rem;margin-bottom:6px}
.ablauf-step p{font-size:.88rem;margin:0}

/* ---------- Über ---------- */
.ueber-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:center}
.ueber-frame{
  aspect-ratio:3/4;border-radius:var(--radius);
  background:linear-gradient(160deg,#6b5c4a,#3c3226);
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
}
.ueber-frame span{font-family:var(--font-serif);color:#f3e9da;font-size:1.4rem}
.ueber-facts{list-style:none;margin:24px 0 0;padding:0;display:flex;flex-direction:column;gap:12px}
.ueber-facts li{
  padding-left:26px;position:relative;font-size:.95rem;color:var(--ink-soft);
}
.ueber-facts li::before{
  content:"";position:absolute;left:0;top:7px;width:14px;height:14px;border-radius:50%;
  background:color-mix(in srgb, var(--accent) 20%, transparent);border:1.5px solid var(--accent);
}

/* ---------- FAQ ---------- */
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:6px 24px;
}
.faq-item summary{
  cursor:pointer;font-weight:600;font-size:1.02rem;padding:18px 0;
  list-style:none;display:flex;align-items:center;justify-content:space-between;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:1.4rem;color:var(--accent);margin-left:16px;transition:transform .2s ease;flex:none;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding-bottom:20px;margin:0;font-size:.95rem}

/* ---------- Kontakt ---------- */
.kontakt{background:var(--bg-alt)}
.kontakt-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.kontakt-lead{font-size:1.05rem;max-width:420px}
.kontakt-details{display:flex;flex-direction:column;gap:16px;margin-top:24px}
.kontakt-row{display:flex;align-items:center;gap:14px;font-size:.98rem;color:var(--ink)}
.kontakt-row:is(a):hover{color:var(--accent)}
.kontakt-icon{
  width:38px;height:38px;flex:none;border-radius:50%;background:var(--card);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:1rem;
}
.kontakt-map{
  margin-top:28px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.kontakt-map iframe{width:100%;height:260px;border:0;display:block;filter:grayscale(.15) contrast(1.02)}

.kontakt-form{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:32px;display:flex;flex-direction:column;gap:18px;box-shadow:var(--shadow);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.kontakt-form label{display:flex;flex-direction:column;gap:6px;font-size:.85rem;color:var(--ink-soft);font-weight:600}
.kontakt-form input,.kontakt-form select,.kontakt-form textarea{
  font-family:var(--font-sans);font-size:.95rem;color:var(--ink);
  padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:var(--bg);
  outline:none;transition:border-color .2s ease;
}
.kontakt-form input:focus,.kontakt-form select:focus,.kontakt-form textarea:focus{border-color:var(--accent)}
.kontakt-form textarea{resize:vertical}
.form-note{font-size:.85rem;color:var(--accent);min-height:1.2em;margin:0}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:28px 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;font-size:.85rem;color:var(--ink-soft)}
.footer-brand{display:flex;align-items:center}
.footer-nav{display:flex;gap:24px}
.footer-nav a:hover{color:var(--ink)}

/* ---------- To top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;
  background:var(--ink);color:var(--bg);border:none;cursor:pointer;font-size:1.1rem;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .25s ease, transform .25s ease;z-index:150;
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--accent)}

/* ---------- Modal ---------- */
.modal-overlay{
  position:fixed;inset:0;z-index:250;background:rgba(20,17,13,.6);
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;transition:opacity .25s ease;
}
.modal-overlay:not([hidden]){opacity:1}
.modal-overlay[hidden]{display:none}
.modal{
  background:var(--card);border-radius:var(--radius);max-width:640px;width:100%;
  max-height:88vh;overflow:auto;position:relative;box-shadow:0 30px 60px -20px rgba(0,0,0,.4);
  transform:translateY(16px);transition:transform .25s ease;
}
.modal-overlay:not([hidden]) .modal{transform:translateY(0)}
.modal-close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;
  background:var(--bg);border:1px solid var(--line);cursor:pointer;font-size:.95rem;color:var(--ink);z-index:2;
}
.modal-media{
  aspect-ratio:16/9;position:relative;overflow:hidden;
  background:linear-gradient(160deg, color-mix(in srgb, var(--tint,#8a7b68) 55%, var(--bg-alt)), color-mix(in srgb, var(--tint,#8a7b68) 20%, var(--bg)));
  display:flex;align-items:flex-end;padding:24px;
}
.modal-media span{position:relative;font-family:var(--font-serif);color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.35);font-size:1.2rem}
.modal-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.modal-body{padding:28px 28px 32px}
.modal-body h3{font-size:1.5rem}
.modal-cta{margin-top:8px}

/* ---------- Legal pages ---------- */
.legal{padding:70px 0 100px}
.legal-content{max-width:720px}
.legal-content h1{font-size:2.2rem;margin-bottom:.6em}
.legal-content h2{font-size:1.2rem;margin-top:1.6em}
.legal-content a{color:var(--accent);text-decoration:underline}
.legal-source{font-size:.8rem;opacity:.7;margin-top:2.5em}

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .leistungen-grid{grid-template-columns:repeat(2,1fr)}
  .projekte-grid{grid-template-columns:repeat(2,1fr)}
  .ablauf-steps{grid-template-columns:repeat(3,1fr)}
  .ueber-grid,.kontakt-grid{grid-template-columns:1fr;gap:40px}
  .ueber-frame{max-width:320px}
}

@media (max-width: 720px){
  .main-nav{
    position:fixed;inset:76px 0 0 0;background:var(--bg);
    flex-direction:column;align-items:flex-start;padding:32px 24px;gap:20px;
    font-size:1.2rem;transform:translateX(100%);transition:transform .3s ease;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-cta{margin-top:12px}
  .nav-toggle{display:flex}
  .theme-toggle{margin-left:auto}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .leistungen-grid{grid-template-columns:1fr}
  .projekte-grid{grid-template-columns:1fr}
  .ablauf-steps{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .section{padding:72px 0}
  .hero{padding:120px 0 90px}
}