/* aibio GmbH & Co. KG – statische Website, kein PHP/CMS nötig */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,700&family=Inter:wght@400;500;600&display=swap');

:root{
  --forest:#1f3a2c;
  --forest-2:#2c5240;
  --leaf:#6a9a3a;
  --wood:#b9783f;
  --ember:#d9622b;
  --cream:#f6f2ea;
  --paper:#fffdf8;
  --ink:#1d2420;
  --muted:#5d6a62;
  --line:#e3ddd0;
  --radius:16px;
  --max:1140px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--forest-2)}
h1,h2,h3{font-family:Fraunces,Georgia,serif;line-height:1.15;margin:0 0 .5em;color:var(--forest)}
h1{font-size:clamp(2.2rem,5vw,3.8rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.6rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
.eyebrow{font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--wood);margin-bottom:.6em}
.lead{font-size:1.15rem;color:var(--muted);max-width:62ch}

/* Header */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,253,248,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-family:Fraunces,serif;font-weight:700;font-size:1.6rem;color:var(--forest);text-decoration:none;letter-spacing:-.01em}
.logo span{color:var(--leaf)}
nav.main ul{list-style:none;display:flex;gap:26px;margin:0;padding:0}
nav.main a{text-decoration:none;color:var(--ink);font-weight:500;font-size:.95rem}
nav.main a:hover{color:var(--leaf)}
.menu-btn{display:none;background:none;border:0;font-size:1.6rem;color:var(--forest);cursor:pointer}
@media(max-width:860px){
  .menu-btn{display:block}
  nav.main{position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);display:none}
  nav.main.open{display:block}
  nav.main ul{flex-direction:column;gap:0;padding:8px 16px 16px}
  nav.main li a{display:block;padding:10px 0;border-bottom:1px solid var(--line)}
}

/* Hero */
.hero{position:relative;color:#fff;background:var(--forest);overflow:hidden}
.hero img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.8}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(23,45,34,.82) 20%,rgba(23,45,34,.45) 55%,rgba(23,45,34,.05))}
.hero h1,.hero .lead{text-shadow:0 1px 12px rgba(0,0,0,.35)}
.hero .wrap{position:relative;z-index:2;padding:110px 16px 120px}
.hero h1{color:#fff;max-width:16ch}
.hero .lead{color:#dfe8e1}
.hero .eyebrow{color:#e3b07c}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-block;padding:13px 22px;border-radius:999px;font-weight:600;text-decoration:none;transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn.primary{background:var(--ember);color:#fff}
.btn.ghost{border:1.5px solid rgba(255,255,255,.6);color:#fff}

/* Stats */
.stats{margin-top:-56px;position:relative;z-index:5}
.stats .grid{display:grid;grid-template-columns:repeat(3,1fr);background:var(--paper);border-radius:var(--radius);box-shadow:0 18px 40px rgba(31,58,44,.12);overflow:hidden}
.stat{padding:26px 24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-family:Fraunces,serif;font-size:2.1rem;color:var(--forest);line-height:1.1}
.stat span{color:var(--muted);font-size:.9rem}
.stats small{display:block;text-align:right;color:var(--muted);font-size:.78rem;margin-top:8px}
@media(max-width:760px){.stats .grid{grid-template-columns:1fr}.stat{border-right:0;border-bottom:1px solid var(--line)}.stat:last-child{border-bottom:0}}

section{padding:96px 0}
section.alt{background:var(--cream)}

/* Intro */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:0 14px 34px rgba(0,0,0,.12)}
@media(max-width:860px){.split{grid-template-columns:1fr;gap:32px}}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px}
.pillar{background:var(--cream);border-radius:12px;padding:16px}
.pillar b{display:block;color:var(--forest);font-family:Fraunces,serif;font-size:1.1rem}
.pillar span{font-size:.9rem;color:var(--muted)}
@media(max-width:560px){.pillars{grid-template-columns:1fr}}

/* Services */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
@media(max-width:900px){.cards{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.cards{grid-template-columns:1fr}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column}
.card .ico{width:46px;height:46px;border-radius:12px;background:#eaf1e1;color:var(--leaf);display:grid;place-items:center;margin-bottom:16px}
.card ul{padding-left:1.1em;margin:0;color:var(--muted)}
.card li{margin-bottom:4px}
.card.feature{grid-column:span 2;background:var(--forest);color:#e6eee8;border:0}
.card.feature h3{color:#fff}
.card.feature ul{color:#cfdcd3}
.card.feature .ico{background:rgba(255,255,255,.1);color:#e3b07c}
@media(max-width:600px){.card.feature{grid-column:auto}}
.card.wide{grid-column:1/-1}
.card.wide .cols2{margin-top:4px}
.cols2{display:grid;grid-template-columns:1fr 1fr;gap:4px 28px}
@media(max-width:600px){.cols2{grid-template-columns:1fr}}
.todo{background:#fff4d6;border:1px dashed #d8a93a;border-radius:8px;padding:8px 12px;font-size:.85rem;color:#7a5a12;margin-top:auto}

/* Plant */
.components{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:36px 0}
@media(max-width:860px){.components{grid-template-columns:1fr 1fr}}
.comp{background:var(--paper);border-radius:14px;padding:22px;border-top:4px solid var(--wood)}
.comp:nth-child(2){border-color:var(--ember)}
.comp:nth-child(3){border-color:var(--leaf)}
.comp:nth-child(4){border-color:var(--forest-2)}
.spec{display:flex;align-items:baseline;gap:8px;margin:2px 0 10px}
.spec b{font-family:Fraunces,serif;font-size:1.7rem;color:var(--forest);line-height:1}
.spec span{font-size:.85rem;color:var(--muted)}
.comp p{font-size:.92rem;color:var(--muted);margin:0 0 10px}
.figure{background:var(--paper);border-radius:var(--radius);padding:16px;border:1px solid var(--line)}
.figure figcaption{font-size:.85rem;color:var(--muted);margin-top:10px;text-align:center}
.two-fig{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:760px){.two-fig{grid-template-columns:1fr}}

/* Photo strip */
.photos{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:16px}
@media(max-width:860px){.photos{grid-template-columns:1fr 1fr}}
.photos figure{margin:0}
.photos a{display:block;border-radius:12px;overflow:hidden;aspect-ratio:4/3;background:var(--line)}
.photos img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.photos a:hover img{transform:scale(1.04)}
.photos figcaption{font-size:.85rem;color:var(--muted);margin-top:6px}

/* Nahwärmenetz */
.netz{background:linear-gradient(135deg,#eaf1e1,#f6f2ea)}
.netz-card{background:var(--paper);border-radius:var(--radius);padding:28px;box-shadow:0 14px 34px rgba(31,58,44,.10)}
.abnehmer{list-style:none;padding:0;margin:0 0 20px;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.abnehmer li{display:flex;align-items:center;gap:10px;background:var(--cream);border-radius:10px;padding:12px;font-weight:500;font-size:.93rem}
.abnehmer span{font-size:1.3rem}
.potenzial{border-left:4px solid var(--leaf);padding:4px 0 4px 14px}
.potenzial b{display:block;color:var(--forest)}
.potenzial span{font-size:.92rem;color:var(--muted)}
@media(max-width:480px){.abnehmer{grid-template-columns:1fr}}

/* Timeline */
.timeline{position:relative;margin-top:40px;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl{position:relative;margin-bottom:36px}
.tl::before{content:"";position:absolute;left:-31px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--paper);border:3px solid var(--leaf)}
.tl .step{font-size:.78rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--wood)}
.tl h3{margin-top:4px}
.tl ul{color:var(--muted)}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin-top:20px}
.gallery a{display:block;border-radius:10px;overflow:hidden;aspect-ratio:1;background:var(--line)}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.gallery a:hover img{transform:scale(1.05)}

/* News */
.news{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin-top:40px}
.post{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.post img{aspect-ratio:16/10;object-fit:cover;width:100%}
.post .body{padding:22px}
.post time{font-size:.8rem;color:var(--wood);font-weight:600}
.post h3{margin:6px 0 10px}
.post p{font-size:.93rem;color:var(--muted)}
.post .mini-one{display:block;border-radius:10px;overflow:hidden;margin-top:4px}
.post .mini-one img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* Media */
.media{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
@media(max-width:860px){.media{grid-template-columns:1fr}}
.media h3{font-size:1.05rem}
.doc{display:flex;gap:10px;align-items:flex-start;padding:10px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink);font-size:.93rem}
.doc:hover{color:var(--leaf)}
.doc::before{content:"PDF";flex:none;font-size:.65rem;font-weight:700;background:var(--ember);color:#fff;border-radius:4px;padding:2px 5px;margin-top:3px}

/* Contact */
.contact{background:var(--forest);color:#e6eee8}
.contact h2{color:#fff}
.contact .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
@media(max-width:860px){.contact .grid{grid-template-columns:1fr}}
.contact-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:28px}
.contact-card dl{display:grid;grid-template-columns:auto 1fr;gap:8px 18px;margin:0}
.contact-card dt{color:#a9bdb0;font-size:.85rem}
.contact-card dd{margin:0}
.contact a{color:#f0c79c}

footer.site{background:#162a20;color:#a9bdb0;font-size:.88rem;padding:26px 0}
footer.site .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
footer.site a{color:#dfe8e1;text-decoration:none}

/* Legal page */
.legal{padding:64px 0 96px}
.legal .wrap{max-width:820px}
.legal h2{margin-top:1.6em;font-size:1.6rem}
.legal h3{margin-top:1.3em;font-size:1.15rem}
.legal dl{display:grid;grid-template-columns:auto 1fr;gap:6px 20px}
.legal dt{font-weight:600}
.legal dd{margin:0}