/* Glasfaser Augustusburg – Karsten Günther
   Farbwelt: Zschopau-Tal bei Nacht + Lichtleiter + Schloss-Sandstein */

:root{
  --nacht:#0B1622;
  --schiefer:#132534;
  --schiefer-2:#1B3245;
  --licht:#4FD8E4;
  --licht-tief:#1E96AE;
  --bernstein:#F2A54A;
  --creme:#EEF4F7;
  --grau:#93A9BA;
  --linie:rgba(147,169,186,.22);

  --ff-display:'Bricolage Grotesque',system-ui,sans-serif;
  --ff-body:'Instrument Sans',system-ui,sans-serif;
  --ff-mono:'JetBrains Mono',ui-monospace,monospace;

  --max:1180px;
  --r:18px;
  --pad-sec:clamp(64px,9vw,132px);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--nacht);color:var(--creme);
  font-family:var(--ff-body);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--licht);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--bernstein);outline-offset:3px;border-radius:4px}

.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
section{padding:var(--pad-sec) 0;position:relative}

h1,h2,h3,h4{font-family:var(--ff-display);font-weight:700;line-height:1.08;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2.3rem,6vw,4.3rem)}
h2{font-size:clamp(1.8rem,3.8vw,2.9rem)}
h3{font-size:clamp(1.15rem,2vw,1.45rem);letter-spacing:-.01em}
p{margin:0 0 1.1em}
.lead{font-size:clamp(1.05rem,1.7vw,1.28rem);color:#CBDCE7;max-width:62ch}
.muted{color:var(--grau)}
small{color:var(--grau)}

/* ---------- Eyebrow / Label ---------- */
.eyebrow{
  font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--licht);margin:0 0 14px;display:block;
}
.eyebrow::before{content:"";display:inline-block;width:26px;height:1px;background:var(--licht);vertical-align:middle;margin-right:12px}

/* ---------- Kopfzeile ---------- */
.topbar{
  position:sticky;top:0;z-index:60;backdrop-filter:blur(14px);
  background:rgba(11,22,34,.82);border-bottom:1px solid var(--linie);
}
.topbar .wrap{display:flex;align-items:center;gap:18px;min-height:68px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--ff-display);font-weight:700;font-size:1.06rem;color:var(--creme);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand .dot{width:11px;height:11px;border-radius:50%;background:var(--licht);box-shadow:0 0 0 4px rgba(79,216,228,.18);animation:puls 2.6s infinite}
@keyframes puls{0%,100%{box-shadow:0 0 0 4px rgba(79,216,228,.18)}50%{box-shadow:0 0 0 9px rgba(79,216,228,0)}}

.nav{margin-left:auto;display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav a{
  color:#C6D6E2;font-size:.93rem;padding:8px 12px;border-radius:999px;
  transition:background .2s,color .2s;
}
.nav a:hover{background:var(--schiefer-2);color:#fff;text-decoration:none}
.nav a[aria-current="page"]{color:var(--nacht);background:var(--licht);font-weight:600}
.burger{display:none;margin-left:auto;background:var(--schiefer-2);border:1px solid var(--linie);color:var(--creme);border-radius:12px;padding:10px 14px;font:inherit;font-size:.9rem;cursor:pointer}

@media(max-width:1020px){
  .burger{display:block}
  .nav{
    margin-left:0;position:fixed;inset:68px 0 auto 0;background:var(--nacht);
    border-bottom:1px solid var(--linie);flex-direction:column;align-items:stretch;
    padding:14px 22px 22px;gap:2px;display:none;max-height:calc(100vh - 68px);overflow:auto;
  }
  .nav.open{display:flex}
  .nav a{padding:13px 14px;border-radius:12px}
}

/* ---------- Signature: Lichtleiter am Seitenrand ---------- */
.fiber{
  position:fixed;left:26px;top:0;bottom:0;width:2px;z-index:40;
  background:var(--linie);pointer-events:none;
}
.fiber::after{
  content:"";position:absolute;top:0;left:-1px;width:4px;
  height:var(--fiber,0%);border-radius:4px;
  background:linear-gradient(180deg,var(--licht),var(--bernstein));
  box-shadow:0 0 16px 2px rgba(79,216,228,.55);
  transition:height .12s linear;
}
@media(max-width:1300px){.fiber{display:none}}

/* ---------- Hero ---------- */
.hero{padding:clamp(70px,10vw,130px) 0 clamp(56px,7vw,96px);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(28px,5vw,64px);align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}}
.hero h1 .glow{
  background:linear-gradient(92deg,var(--licht),var(--bernstein));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* Lichtleiter-Grafik im Hero */
.strands{
  position:relative;height:320px;border-radius:var(--r);overflow:hidden;
  background:radial-gradient(120% 100% at 80% 20%,var(--schiefer-2),var(--nacht) 70%);
  border:1px solid var(--linie);
}
.strands svg{width:100%;height:100%}
.strands .pulse{stroke-dasharray:14 300;animation:flow 3.4s linear infinite}
.strands .pulse:nth-child(2){animation-delay:.5s}
.strands .pulse:nth-child(3){animation-delay:1.1s}
.strands .pulse:nth-child(4){animation-delay:1.7s}
.strands .pulse:nth-child(5){animation-delay:2.3s}
@keyframes flow{to{stroke-dashoffset:-314}}
.strands .cap{
  position:absolute;left:18px;bottom:16px;font-family:var(--ff-mono);
  font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--grau);
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:.98rem;
  padding:14px 24px;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s,box-shadow .18s,background .18s,color .18s;font-family:var(--ff-body);
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:var(--licht);color:#06131C;box-shadow:0 10px 30px -12px rgba(79,216,228,.8)}
.btn-primary:hover{box-shadow:0 16px 38px -12px rgba(79,216,228,.95)}
.btn-amber{background:var(--bernstein);color:#241403;box-shadow:0 10px 30px -12px rgba(242,165,74,.8)}
.btn-ghost{border-color:var(--linie);color:var(--creme)}
.btn-ghost:hover{border-color:var(--licht);color:var(--licht)}

/* ---------- Karten / Raster ---------- */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}

.card{
  background:linear-gradient(160deg,var(--schiefer),var(--nacht));
  border:1px solid var(--linie);border-radius:var(--r);padding:26px;
  transition:transform .28s cubic-bezier(.2,.7,.3,1),border-color .28s,box-shadow .28s;
  position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-5px);border-color:rgba(79,216,228,.5);box-shadow:0 22px 50px -28px rgba(0,0,0,.9)}
.card h3{margin-bottom:.4em}
.card p:last-child{margin-bottom:0}
.card .num{font-family:var(--ff-mono);font-size:.75rem;color:var(--bernstein);letter-spacing:.16em;display:block;margin-bottom:10px}
.card.hell{background:linear-gradient(160deg,#F7FBFD,#E4EFF4);color:#0B1622;border-color:transparent}
.card.hell h3,.card.hell a{color:#0B1622}
.card.hell .num{color:var(--licht-tief)}

.tile-link{display:block;color:inherit}
.tile-link:hover{text-decoration:none}

/* ---------- Preis-Kachel ---------- */
.preis{
  display:flex;flex-wrap:wrap;align-items:center;gap:22px;
  border:1px solid rgba(242,165,74,.45);border-radius:var(--r);
  background:linear-gradient(120deg,rgba(242,165,74,.12),transparent 60%);
  padding:26px;
}
.preis .zahl{font-family:var(--ff-display);font-size:clamp(2.4rem,6vw,3.6rem);line-height:1;color:var(--bernstein);letter-spacing:-.03em}
.preis .zahl span{font-size:1rem;font-family:var(--ff-body);color:var(--grau);letter-spacing:0}

/* ---------- Tabelle ---------- */
.tab-scroll{overflow-x:auto;border:1px solid var(--linie);border-radius:var(--r)}
table{width:100%;border-collapse:collapse;min-width:560px;font-size:.95rem}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--linie);vertical-align:top}
th{font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--licht);background:var(--schiefer)}
tr:last-child td{border-bottom:none}
td strong{color:#fff}

/* ---------- Checkliste ---------- */
.check{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.check li{position:relative;padding-left:34px}
.check li::before{
  content:"";position:absolute;left:0;top:.42em;width:16px;height:16px;border-radius:5px;
  background:var(--licht);box-shadow:0 0 12px rgba(79,216,228,.5);
}
.check li::after{content:"";position:absolute;left:5px;top:.68em;width:5px;height:9px;border:solid #06131C;border-width:0 2px 2px 0;transform:rotate(43deg)}
.warn{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.warn li{position:relative;padding-left:34px}
.warn li::before{content:"!";position:absolute;left:0;top:.05em;width:20px;height:20px;border-radius:6px;background:var(--bernstein);color:#241403;font-weight:700;font-size:.8rem;display:grid;place-items:center}

/* ---------- Akkordeon (FAQ) ---------- */
details{
  border:1px solid var(--linie);border-radius:14px;background:var(--schiefer);
  padding:0 20px;margin-bottom:12px;transition:border-color .2s;
}
details[open]{border-color:rgba(79,216,228,.45)}
summary{
  cursor:pointer;list-style:none;padding:18px 0;font-family:var(--ff-display);
  font-weight:600;font-size:1.05rem;display:flex;gap:14px;align-items:flex-start;
}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";margin-left:auto;color:var(--licht);font-size:1.5rem;line-height:1;transition:transform .25s}
details[open] summary::after{transform:rotate(45deg)}
details .inner{padding-bottom:18px;color:#C6D6E2}
details .inner p:last-child{margin-bottom:0}

/* ---------- Schritt-Zeitstrahl ---------- */
.steps{display:grid;gap:0;counter-reset:s}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:20px;
  padding:24px 0;border-bottom:1px solid var(--linie);
}
.step:last-child{border-bottom:none}
.step .n{
  font-family:var(--ff-mono);font-size:.9rem;color:var(--nacht);background:var(--licht);
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-weight:700;
}
.step h3{margin-bottom:.3em}
.step p:last-child{margin-bottom:0}

/* ---------- CTA-Band ---------- */
.band{
  background:linear-gradient(115deg,var(--schiefer-2),var(--nacht) 65%);
  border-top:1px solid var(--linie);border-bottom:1px solid var(--linie);
}
.band .inner{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center}
@media(max-width:820px){.band .inner{grid-template-columns:1fr}}

.zeiten{display:grid;gap:8px;font-family:var(--ff-mono);font-size:.92rem}
.zeiten div{display:flex;justify-content:space-between;gap:16px;padding:8px 0;border-bottom:1px dashed var(--linie)}
.zeiten div:last-child{border-bottom:none}
.zeiten .zu{color:var(--grau)}

/* ---------- Fußzeile ---------- */
footer{background:#070F18;border-top:1px solid var(--linie);padding:60px 0 34px;font-size:.94rem}
footer h4{font-size:.78rem;font-family:var(--ff-mono);letter-spacing:.18em;text-transform:uppercase;color:var(--licht);margin-bottom:14px}
footer a{color:#C6D6E2}
footer a:hover{color:var(--licht)}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
@media(max-width:820px){.f-grid{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.f-grid{grid-template-columns:1fr}}
.f-list{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.f-bottom{margin-top:38px;padding-top:20px;border-top:1px solid var(--linie);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;color:var(--grau);font-size:.87rem}

/* ---------- Brotkrumen ---------- */
.krumen{font-size:.85rem;color:var(--grau);padding:20px 0 0}
.krumen a{color:var(--grau)}
.krumen a:hover{color:var(--licht)}

/* ---------- Schwebender WhatsApp-Knopf ---------- */
.float-wa{
  position:fixed;right:20px;bottom:20px;z-index:70;display:inline-flex;align-items:center;gap:10px;
  background:#1FB955;color:#04220F;font-weight:700;padding:14px 20px;border-radius:999px;
  box-shadow:0 14px 34px -12px rgba(31,185,85,.9);font-size:.95rem;
}
.float-wa:hover{text-decoration:none;transform:translateY(-2px)}
@media(max-width:520px){.float-wa span.txt{display:none}.float-wa{padding:16px}}

/* ---------- Scroll-Einblendung ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}