/* ---------- Tokens ---------- */
:root{
  --bg:#2b3238;
  --bg-2:#333b43;
  --bg-3:#3c454e;
  --line:rgba(255,255,255,.12);
  --text:#f4f2ee;
  --muted:#aab2ba;
  --accent:#e63946;
  --warm:#e0a85c;
  --font:"Montserrat",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --gutter:clamp(16px,4vw,56px);
  --topbar:64px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
  font-weight:300;line-height:1.55;font-size:clamp(15px,1.05vw,18px);
  overflow-x:hidden;
}
img,picture{display:block;max-width:100%}
picture img{width:100%;height:100%;object-fit:cover}
h1,h2,h3{font-weight:600;line-height:1.1;margin:0 0 .5em;letter-spacing:-.01em}
h2{font-size:clamp(28px,3.6vw,52px);text-transform:none}
h3{font-size:clamp(20px,1.8vw,26px)}
p{margin:0 0 1em}
a{color:inherit}
button{font:inherit;color:inherit}
.lead{font-size:1.15em;font-weight:400}
.eyebrow{
  font-size:.72em;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);
  margin-bottom:.9em;font-weight:500
}
.eyebrow::before{content:"";display:inline-block;width:22px;height:2px;background:var(--accent);vertical-align:middle;margin-right:10px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:999px;
  border:1px solid var(--accent);background:var(--accent);color:#fff;text-decoration:none;
  font-weight:500;font-size:.9em;cursor:pointer;transition:transform .2s var(--ease),background .2s,border-color .2s;
  white-space:nowrap
}
.btn:hover{transform:translateY(-1px);background:#ff4654}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn--ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.3)}
.btn--icon{padding:10px 12px}
.btn:focus-visible,.tab:focus-visible,.chip:focus-visible,.tile:focus-visible,.preset:focus-visible{outline:2px solid var(--warm);outline-offset:3px}

/* ---------- Progress + Topbar ---------- */
.progress{position:fixed;inset:0 0 auto 0;height:3px;z-index:60;background:rgba(255,255,255,.06)}
.progress span{display:block;height:100%;width:0;background:var(--accent);transition:width .1s linear}
.topbar{
  position:fixed;top:0;left:0;right:0;height:var(--topbar);z-index:50;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:0 var(--gutter);
  background:linear-gradient(to bottom,rgba(43,50,56,.92),rgba(43,50,56,0));
  transition:background .3s
}
.topbar.is-solid{background:rgba(43,50,56,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand{display:flex;flex-direction:column;align-items:flex-start;text-decoration:none;line-height:1}
.brand__name{font-weight:700;letter-spacing:.32em;font-size:1.15em}
.brand__by{font-size:.62em;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:4px;margin-left:2px}
.brand--small .brand__name{font-size:1em}
.topnav{display:flex;gap:26px}
.topnav a{text-decoration:none;font-size:.82em;letter-spacing:.04em;color:var(--muted);transition:color .2s}
.topnav a:hover,.topnav a.is-active{color:#fff}
.topbar__actions{display:flex;gap:8px}
@media (max-width:1100px){.topnav{display:none}}
@media (max-width:600px){#btnSummary{display:none}}

/* ---------- Rail ---------- */
.rail{
  position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:45;
  display:flex;flex-direction:column;gap:14px
}
.rail a{
  position:relative;width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.28);
  transition:background .2s,transform .2s;display:block
}
.rail a::after{
  content:attr(data-label);position:absolute;right:20px;top:50%;transform:translateY(-50%);
  white-space:nowrap;font-size:.72em;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);
  opacity:0;transition:opacity .2s;pointer-events:none
}
.rail a:hover::after,.rail a.is-active::after{opacity:1}
.rail a.is-active{background:var(--accent);transform:scale(1.3)}
@media (max-width:900px){.rail{display:none}}

/* ---------- Sections ---------- */
.section{padding:clamp(72px,10vh,140px) var(--gutter);max-width:1500px;margin:0 auto}
.section--narrow{max-width:1000px}
.section--full{max-width:none}
.section__head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:36px;flex-wrap:wrap;max-width:1500px;margin-left:auto;margin-right:auto}
.section__note{max-width:380px;color:var(--muted);margin:0}
.cols{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;margin:28px 0 48px}
@media (max-width:800px){.cols{grid-template-columns:1fr;gap:12px}}
.facts{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;border-top:1px solid var(--line);padding-top:28px}
.facts strong{display:block;font-size:2.4em;font-weight:600;line-height:1;margin-bottom:6px}
.facts span{color:var(--muted);font-size:.9em}
@media (max-width:700px){.facts{grid-template-columns:repeat(2,1fr)}}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- Hero ---------- */
.hero{height:200vh;position:relative}
.hero__sticky{position:sticky;top:0;height:100vh;overflow:hidden}
.hero__img{position:absolute;inset:0;transform:scale(1.08);transition:transform .1s linear}
.hero__img img{width:100%;height:100%;object-fit:cover}
.hero__shade{position:absolute;inset:0;background:#0d1114;opacity:.78;pointer-events:none}
.hero__content{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:0 var(--gutter)
}
.hero__title{
  font-size:clamp(56px,13vw,180px);font-weight:700;letter-spacing:.28em;margin:0 0 .15em;
  padding-left:.28em;text-shadow:0 10px 40px rgba(0,0,0,.4)
}
.hero__sub{font-size:clamp(16px,1.6vw,24px);letter-spacing:.3em;text-transform:uppercase;font-weight:400;margin:0 0 2.2em;padding-left:.3em}
.hero__claim{font-size:clamp(12px,1.1vw,16px);letter-spacing:.12em;text-transform:uppercase;line-height:1.9;color:#e6e3dd;margin:0;max-width:900px}
.hero__hint{
  position:absolute;bottom:28px;left:50%;transform:translateX(-50%);font-size:.7em;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:10px
}
.hero__hint span{width:1px;height:46px;background:linear-gradient(to bottom,var(--accent),transparent);animation:drop 1.8s infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.hero.is-done .hero__hint{opacity:0;transition:opacity .4s}

/* ---------- Strip ---------- */
.strip{
  display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px var(--gutter) 24px;
  scrollbar-width:none;-webkit-overflow-scrolling:touch
}
.strip::-webkit-scrollbar{display:none}
.strip figure{
  flex:0 0 min(640px,85vw);aspect-ratio:3/2;margin:0;position:relative;scroll-snap-align:start;
  border-radius:6px;overflow:hidden;background:var(--bg-2)
}
.strip figure.is-portrait{flex-basis:min(380px,60vw);aspect-ratio:3/5}
.strip figure img{width:100%;height:100%;object-fit:cover;filter:saturate(.85)}
.strip figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:40px 18px 14px;font-size:.8em;letter-spacing:.04em;
  background:linear-gradient(to top,rgba(0,0,0,.75),transparent);color:#fff
}
.strip__controls{display:flex;gap:8px;justify-content:flex-end;padding:0 var(--gutter)}

/* ---------- Compare ---------- */
.tabs{display:flex;gap:6px;background:var(--bg-2);padding:4px;border-radius:999px}
.tab{border:0;background:transparent;padding:9px 18px;border-radius:999px;cursor:pointer;font-size:.85em;color:var(--muted);transition:background .2s,color .2s}
.tab.is-active{background:var(--bg-3);color:#fff}
.compare{
  position:relative;width:100%;aspect-ratio:16/9;max-height:80vh;border-radius:8px;overflow:hidden;
  background:var(--bg-2);user-select:none;-webkit-user-select:none;touch-action:pan-y
}
.compare picture{position:absolute;inset:0}
.compare picture img{width:100%;height:100%;object-fit:cover}
.compare__after{clip-path:inset(0 0 0 var(--pos,50%))}
.compare__handle{
  position:absolute;top:0;bottom:0;left:var(--pos,50%);width:2px;background:#fff;transform:translateX(-50%);pointer-events:none;
  box-shadow:0 0 0 1px rgba(0,0,0,.2)
}
.compare__handle span{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:46px;height:46px;border-radius:50%;background:#fff;
  box-shadow:0 6px 24px rgba(0,0,0,.4);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232b3238' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 6l-5 6 5 6M15 6l5 6-5 6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:center;background-size:22px
}
.compare__label{
  position:absolute;top:16px;padding:6px 12px;border-radius:999px;font-size:.72em;letter-spacing:.14em;text-transform:uppercase;
  background:rgba(0,0,0,.5);backdrop-filter:blur(6px);pointer-events:none
}
.compare__label--l{left:16px}.compare__label--r{right:16px;background:var(--accent)}
.compare__range{
  position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;-webkit-appearance:none;appearance:none
}

/* ---------- Konfigurator ---------- */
.presets{display:flex;gap:10px;flex-wrap:wrap;margin:0 auto 28px;max-width:1500px}
.preset{
  border:1px solid var(--line);background:var(--bg-2);border-radius:999px;padding:10px 16px;cursor:pointer;
  font-size:.85em;display:flex;gap:10px;align-items:center;transition:border-color .2s,background .2s
}
.preset:hover{border-color:rgba(255,255,255,.35)}
.preset.is-active{border-color:var(--accent);background:rgba(230,57,70,.12)}
.preset i{width:8px;height:8px;border-radius:50%;background:var(--muted)}
.preset.is-active i{background:var(--accent)}
.konf{display:grid;grid-template-columns:320px 1fr;gap:32px;max-width:1500px;margin:0 auto;align-items:start}
@media (max-width:1000px){.konf{grid-template-columns:1fr}}
.konf__side{position:sticky;top:calc(var(--topbar) + 16px)}
@media (max-width:1000px){.konf__side{position:static}}
.building{width:100%}
.building svg{width:100%;height:auto;display:block}
.building .floor{cursor:pointer}
.building .floor rect{fill:var(--bg-2);stroke:var(--line);stroke-width:1.5;transition:fill .2s,stroke .2s}
.building .floor:hover rect{fill:var(--bg-3)}
.building .floor.is-active rect{stroke:var(--accent);stroke-width:2;fill:var(--bg-3)}
.building .floor text{fill:var(--text);font-family:var(--font);pointer-events:none}
.building .floor .fl-name{font-size:11px;letter-spacing:.14em;text-transform:uppercase;fill:var(--muted);font-weight:500}
.building .floor .fl-use{font-size:14px;font-weight:600}
.building .roof{fill:none;stroke:var(--line);stroke-width:1.5}
.building .ground{stroke:var(--muted);stroke-width:1.5;stroke-dasharray:4 4}
.konf__floorname{font-size:.75em;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:22px 0 10px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  border:1px solid var(--line);background:transparent;padding:9px 14px;border-radius:999px;cursor:pointer;font-size:.85em;
  transition:border-color .2s,background .2s
}
.chip:hover{border-color:rgba(255,255,255,.35)}
.chip[aria-checked="true"]{background:#fff;color:var(--bg);border-color:#fff;font-weight:500}

.stage{position:relative;aspect-ratio:16/8.4;border-radius:8px;overflow:hidden;background:var(--bg-2)}
.stage__imgs{position:absolute;inset:0}
.stage__imgs picture{position:absolute;inset:0;opacity:0;transition:opacity .7s var(--ease);transform:scale(1.02)}
.stage__imgs picture.is-on{opacity:1;transform:none;transition:opacity .7s var(--ease),transform 1.2s var(--ease)}
.stage__imgs img{width:100%;height:100%;object-fit:cover}
.stage__hotspots{position:absolute;inset:0;pointer-events:none;transition:opacity .3s}
.stage.hs-off .stage__hotspots{opacity:0}
.hs{position:absolute;transform:translate(-50%,-50%);pointer-events:auto}
.hs__dot{
  width:22px;height:22px;border-radius:50%;background:rgba(255,255,255,.95);border:0;cursor:pointer;padding:0;position:relative;
  box-shadow:0 0 0 4px rgba(255,255,255,.25)
}
.hs__dot::before{content:"";position:absolute;inset:7px;border-radius:50%;background:var(--accent)}
.hs__dot::after{content:"";position:absolute;inset:-6px;border-radius:50%;border:1.5px solid rgba(255,255,255,.7);animation:pulse 2.2s infinite}
@keyframes pulse{0%{transform:scale(.7);opacity:1}100%{transform:scale(1.7);opacity:0}}
@media (prefers-reduced-motion:reduce){.hs__dot::after{animation:none}}
.hs__tip{
  position:absolute;left:50%;bottom:calc(100% + 12px);transform:translateX(-50%) translateY(6px);white-space:nowrap;
  background:#fff;color:var(--bg);padding:8px 12px;border-radius:6px;font-size:.78em;font-weight:500;opacity:0;pointer-events:none;
  transition:opacity .2s,transform .2s;box-shadow:0 8px 24px rgba(0,0,0,.35)
}
.hs:hover .hs__tip,.hs.is-open .hs__tip{opacity:1;transform:translateX(-50%)}
.hs.flip .hs__tip{bottom:auto;top:calc(100% + 12px)}
.stage__hs-toggle{
  position:absolute;right:12px;bottom:12px;width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.3);
  background:rgba(0,0,0,.45);color:#fff;cursor:pointer;display:grid;place-items:center;backdrop-filter:blur(6px)
}
.stage__hs-toggle[aria-pressed="false"]{color:var(--muted)}
.stage__info{display:grid;grid-template-columns:1.1fr 1fr;gap:32px;padding:28px 0;border-bottom:1px solid var(--line)}
@media (max-width:700px){.stage__info{grid-template-columns:1fr;gap:12px}}
.stage__info h3{font-size:clamp(22px,2.2vw,30px)}
.stage__info p{color:var(--muted);margin:0}
.features{list-style:none;margin:0;padding:0;display:grid;gap:8px;align-self:center}
.features li{padding-left:22px;position:relative;font-size:.95em}
.features li::before{content:"";position:absolute;left:0;top:.6em;width:10px;height:2px;background:var(--accent)}
.stage__bar{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:20px;flex-wrap:wrap}
.stage__summary{display:flex;gap:18px;flex-wrap:wrap;font-size:.85em;color:var(--muted)}
.stage__summary b{color:#fff;font-weight:500}

/* ---------- Tiles ---------- */
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:900px){.tiles{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.tiles{grid-template-columns:1fr}}
.tile{
  text-align:left;border:1px solid var(--line);background:var(--bg-2);border-radius:8px;padding:26px 24px;cursor:pointer;
  display:flex;flex-direction:column;gap:8px;transition:transform .25s var(--ease),border-color .2s,background .2s;min-height:150px
}
.tile:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.35);background:var(--bg-3)}
.tile strong{font-size:1.1em;font-weight:600}
.tile span{color:var(--muted);font-size:.9em;line-height:1.5}
.tile::after{content:"Szenario laden →";margin-top:auto;font-size:.72em;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);opacity:0;transition:opacity .2s;padding-top:10px}
.tile:hover::after{opacity:1}
.combo{
  margin-top:40px;display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center;
  padding:40px;border-radius:8px;border:1px solid var(--accent);background:linear-gradient(135deg,rgba(230,57,70,.1),transparent 60%)
}
@media (max-width:900px){.combo{grid-template-columns:1fr}}
.combo__text p{color:var(--muted);margin:0}
.combo__actions{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
@media (max-width:900px){.combo__actions{flex-direction:row;flex-wrap:wrap}}

/* ---------- Panels ---------- */
.panels{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:1500px;margin:0 auto}
@media (max-width:900px){.panels{grid-template-columns:1fr}}
.panel{position:relative;aspect-ratio:4/4.3;border-radius:8px;overflow:hidden;background:var(--bg-2)}
.panel picture{position:absolute;inset:0;transition:transform 1.2s var(--ease)}
.panel:hover picture{transform:scale(1.03)}
.panel__text{
  position:absolute;left:0;right:0;bottom:0;padding:120px 32px 32px;
  background:linear-gradient(to top,rgba(20,24,28,.92),rgba(20,24,28,.4) 60%,transparent)
}
.panel__text p{color:#e6e3dd;margin:0;max-width:520px}

/* ---------- Outro + Footer ---------- */
.outro{text-align:center}
.outro .lead{max-width:760px;margin:0 auto 32px}
.outro__actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.footer{
  display:flex;justify-content:space-between;align-items:center;gap:20px;padding:28px var(--gutter);border-top:1px solid var(--line);
  color:var(--muted);font-size:.8em;flex-wrap:wrap
}
.footer__welcome{font-weight:700;letter-spacing:.06em;color:#8a939c}
.footer__welcome .plus{color:var(--accent);font-size:1.3em;vertical-align:-1px}
@media (max-width:700px){.footer__hint{display:none}}

/* ---------- Drawer + Toast ---------- */
.drawer{position:fixed;inset:0;z-index:80;background:rgba(10,13,16,.6);backdrop-filter:blur(6px);opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.drawer.is-open{opacity:1;visibility:visible}
.drawer__panel{
  position:absolute;right:0;top:0;bottom:0;width:min(560px,100%);background:var(--bg-2);padding:56px 44px;overflow:auto;
  transform:translateX(30px);transition:transform .4s var(--ease);border-left:1px solid var(--line)
}
.drawer.is-open .drawer__panel{transform:none}
.drawer__close{position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;font-size:22px;cursor:pointer}
.drawer__list{padding-left:1.2em;margin:24px 0 0;display:grid;gap:22px}
.drawer__list li{padding-left:.4em}
.drawer__list strong{display:block;font-weight:600;margin-bottom:4px}
.drawer__list a{display:inline-block;margin-top:8px;font-size:.85em;color:var(--warm)}
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:#fff;color:var(--bg);padding:12px 20px;border-radius:999px;
  font-size:.85em;font-weight:500;opacity:0;transition:opacity .3s,transform .3s;z-index:90;pointer-events:none
}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ---------- Fullscreen / presentation ---------- */
body.is-present .topbar,body.is-present .footer__hint{opacity:0;pointer-events:none}
body.is-present .topbar:hover{opacity:1;pointer-events:auto}