/* =========================================================
   Sperrholzplatten.shop — Landingpage
   Lokales Stylesheet, keine externen Schriften / Frameworks
   ========================================================= */

:root{
  --c-bg:#faf6ee;
  --c-surface:#ffffff;
  --c-light:#f0e7d4;
  --c-dark:#4a3920;
  --c-darker:#332714;
  --c-text:#231b18;
  --c-muted:#6b5e57;
  --c-accent:#1f7a6b;
  --c-accent-dark:#155b50;
  --c-border:#e3d7be;
  --r-sm:6px;
  --r-md:10px;
  --r-lg:18px;
  --shadow-sm:0 1px 2px rgba(46,28,20,.06), 0 2px 6px rgba(46,28,20,.06);
  --shadow-md:0 6px 18px rgba(46,28,20,.10);
  --max:1180px;
  --gap:1.25rem;
  --font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Liberation Sans", sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.65;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg{max-width:100%;height:auto;display:block}
a{color:var(--c-accent-dark);text-decoration:underline;text-underline-offset:2px}
a:hover{color:var(--c-accent)}

h1,h2,h3,h4{font-weight:700;line-height:1.2;color:var(--c-dark);margin:0 0 .6em}
h1{font-size:clamp(2rem, 4vw + 1rem, 3.2rem);letter-spacing:-.01em}
h2{font-size:clamp(1.5rem, 2vw + 1rem, 2.25rem)}
h3{font-size:1.2rem}
h4{font-size:1rem;color:var(--c-dark)}
p{margin:0 0 1em}

.container{max-width:var(--max);margin:0 auto;padding:0 1.25rem}
.narrow{max-width:820px}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-dark);color:#fff;padding:.6rem 1rem;z-index:100;border-radius:0 0 var(--r-sm) 0}
.skip-link:focus{left:0}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* HEADER */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(150%) blur(8px);border-bottom:1px solid var(--c-border)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.25rem;gap:1rem;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--c-dark);font-size:1.1rem}
.logo strong{font-weight:800}
.nav{display:flex;gap:1.4rem;list-style:none;margin:0;padding:0;align-items:center;flex-wrap:wrap}
.nav a{color:var(--c-dark);text-decoration:none;font-weight:500;font-size:.96rem}
.nav a:hover{color:var(--c-accent-dark)}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.85rem 1.4rem;border-radius:var(--r-md);font-weight:600;font-size:1rem;line-height:1;text-decoration:none;border:1px solid transparent;transition:transform .12s ease, background .12s ease, color .12s ease, border-color .12s ease;cursor:pointer}
.btn-small{padding:.55rem .9rem;font-size:.92rem}
.btn-primary{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
.btn-primary:hover{background:var(--c-accent-dark);border-color:var(--c-accent-dark);color:#fff;text-decoration:none}
.btn-ghost{background:transparent;color:var(--c-dark);border-color:var(--c-dark)}
.btn-ghost:hover{background:var(--c-dark);color:#fff;text-decoration:none}
.btn-block{display:flex;width:100%;margin-top:.5rem}
.btn:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px}

/* HERO */
.hero{background:linear-gradient(180deg, #fff 0%, var(--c-light) 100%);padding:3.5rem 0 4rem;border-bottom:1px solid var(--c-border)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center}
.hero-text .lead{font-size:1.15rem;color:var(--c-muted);max-width:54ch}
.hero-cta{display:flex;gap:.75rem;flex-wrap:wrap;margin:1.4rem 0 1.6rem}
.hero-bullets{list-style:none;padding:0;margin:0;display:grid;gap:.4rem}
.hero-bullets li{position:relative;padding-left:1.6rem;color:var(--c-muted);font-size:.98rem}
.hero-bullets li::before{content:"";position:absolute;left:0;top:.5em;width:.95rem;height:.95rem;background:var(--c-accent);border-radius:50%;box-shadow:inset 0 0 0 3px #fff}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;font-weight:700;color:var(--c-accent-dark);margin:0 0 .8rem}
.hero-svg{background:#fff;border-radius:var(--r-lg);box-shadow:var(--shadow-md);padding:1rem}

/* SECTIONS */
.section{padding:4rem 0}
.section-light{background:var(--c-light)}
.section-dark{background:var(--c-dark);color:#f6efe6}
.section-dark h2,.section-dark h3{color:#fff}
.section-dark p{color:#e7d8c5}
.section-head{max-width:780px;margin:0 0 2.5rem}
.section-head .section-intro{color:var(--c-muted);font-size:1.05rem}
.section-head-light .section-intro{color:#e7d8c5}
.section-head-light .eyebrow{color:#7ab9b0}

/* GRID */
.grid{display:grid;gap:1.25rem}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* CARDS */
.card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);padding:1.4rem;box-shadow:var(--shadow-sm);transition:transform .15s ease, box-shadow .15s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.card-icon{width:42px;height:42px;border-radius:8px;background:var(--c-light);color:var(--c-dark);display:grid;place-items:center;margin-bottom:.9rem}
.card-icon svg{width:24px;height:24px}
.card h3{margin-bottom:.45rem}
.card p{margin:0;color:var(--c-muted);font-size:.97rem}

/* PRODUCT PAIR */
.product-pair{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.product-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);padding:1.5rem;box-shadow:var(--shadow-sm);display:flex;flex-direction:column}
.product-visual{background:var(--c-light);border-radius:var(--r-sm);margin-bottom:1.2rem;padding:.6rem}
.product-card h3{margin:0 0 .4rem;font-size:1.3rem}
.product-claim{color:var(--c-accent-dark);font-weight:600;margin:0 0 1rem}
.product-specs{list-style:none;padding:0;margin:0 0 1.2rem;font-size:.95rem}
.product-specs li{padding:.45rem 0;border-bottom:1px dashed var(--c-border);color:var(--c-muted)}
.product-specs li:last-child{border-bottom:0}
.product-specs strong{color:var(--c-dark);margin-right:.4rem}
.product-card .btn{margin-top:auto}

/* TWO COLUMN */
.two-col{display:grid;grid-template-columns:1.3fr .9fr;gap:3rem;align-items:start}
.callout{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);padding:1.5rem;box-shadow:var(--shadow-sm)}
.callout h3{margin-top:0}

.check-list{list-style:none;padding:0;margin:1rem 0 0;display:grid;gap:.5rem}
.check-list li{position:relative;padding-left:1.7rem;color:var(--c-text)}
.check-list li::before{content:"";position:absolute;left:0;top:.5em;width:.7rem;height:.7rem;border-left:3px solid var(--c-accent);border-bottom:3px solid var(--c-accent);transform:rotate(-45deg)}

/* TABLE */
.table-wrap{overflow-x:auto;margin:0 0 2.5rem;border-radius:var(--r-md);box-shadow:var(--shadow-sm);background:#fff;border:1px solid var(--c-border)}
.data-table{width:100%;border-collapse:collapse;font-size:.96rem}
.data-table th,.data-table td{padding:.85rem 1rem;text-align:left;border-bottom:1px solid var(--c-border)}
.data-table thead th{background:var(--c-dark);color:#fff;font-weight:600}
.data-table tbody th{color:var(--c-dark)}
.data-table tbody tr:nth-child(even){background:var(--c-light)}
.data-table tbody tr:last-child th,.data-table tbody tr:last-child td{border-bottom:0}

.specs .spec{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);padding:1.2rem}
.specs .spec h3{margin-bottom:.4rem;font-size:1rem;color:var(--c-accent-dark)}
.specs .spec p{margin:0;color:var(--c-muted)}

/* USE CASES */
.use-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);padding:1.4rem;border-left:4px solid var(--c-accent)}
.use-card h3{margin:0 0 .4rem;color:var(--c-dark)}
.use-card p{margin:0;color:var(--c-muted);font-size:.97rem}

/* STEPS */
.steps{list-style:none;padding:0;margin:0 0 2rem;display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem;counter-reset:step}
.steps li{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-md);padding:1.4rem;position:relative}
.step-num{display:inline-flex;width:36px;height:36px;border-radius:50%;background:var(--c-accent);color:#fff;align-items:center;justify-content:center;font-weight:700;font-size:1.05rem;margin-bottom:.8rem}
.steps h3{margin:0 0 .35rem;color:#fff}
.steps p{margin:0;color:#e7d8c5;font-size:.95rem}
.center-cta{text-align:center;margin-top:1.5rem}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);padding:0;margin:0 0 .7rem;box-shadow:var(--shadow-sm)}
.faq summary{list-style:none;cursor:pointer;padding:1.05rem 1.2rem;font-weight:600;color:var(--c-dark);display:flex;justify-content:space-between;align-items:center;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.5rem;line-height:1;color:var(--c-accent);transition:transform .15s ease;flex-shrink:0}
.faq details[open] summary::after{content:"–"}
.faq details > p{margin:0;padding:0 1.2rem 1.2rem;color:var(--c-muted)}
.faq summary:focus-visible{outline:3px solid var(--c-accent);outline-offset:-3px;border-radius:var(--r-md)}

/* CONTACT */
.contact-list{list-style:none;padding:0;margin:1rem 0 0;display:grid;gap:.5rem}
.contact-list li{padding:.4rem 0;border-bottom:1px dashed var(--c-border)}
.contact-list strong{color:var(--c-dark);margin-right:.4rem}

/* FOOTER */
.site-footer{background:var(--c-darker);color:#d6c5b3;padding:3rem 0 1.5rem;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2rem}
.site-footer h4{color:#fff;margin:0 0 .8rem;font-size:1rem;letter-spacing:.02em}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:.3rem 0}
.site-footer a{color:#e9d8c2;text-decoration:none}
.site-footer a:hover{color:var(--c-accent);text-decoration:underline}
.site-footer address{font-style:normal;color:#d6c5b3;line-height:1.7;font-size:.95rem}
.footer-brand{font-size:1.15rem;color:#fff;margin:0 0 .4rem}
.footer-claim{color:#bda993;font-size:.95rem;margin:0}
.footer-bottom{margin-top:2rem;padding-top:1.2rem;border-top:1px solid #4a3530;color:#a89483;font-size:.85rem;text-align:center}

/* LEGAL */
.legal{padding:3rem 0;max-width:820px;margin:0 auto}
.legal h1{font-size:2rem;margin-bottom:1.5rem}
.legal h2{font-size:1.3rem;margin-top:2rem;color:var(--c-dark)}
.legal h3{font-size:1.05rem;margin-top:1.5rem}
.legal p,.legal li{color:var(--c-text)}
.legal ul{padding-left:1.3rem}
.legal address{font-style:normal;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);padding:1.2rem;margin:1rem 0}
.legal a.back{display:inline-block;margin-bottom:1.5rem;color:var(--c-accent-dark);text-decoration:none;font-weight:600}
.legal a.back::before{content:"← "}
.legal a.back:hover{color:var(--c-accent)}

/* RESPONSIVE */
@media (max-width: 960px){
  .hero-grid{grid-template-columns:1fr;gap:2rem}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr;gap:2rem}
  .steps{grid-template-columns:repeat(2,1fr)}
  .product-pair{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:1.5rem}
}
@media (max-width: 600px){
  .section{padding:3rem 0}
  .hero{padding:2.5rem 0 3rem}
  .grid-4,.grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav{gap:.9rem;font-size:.95rem}
  body{font-size:16px}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important;scroll-behavior:auto!important}
}