/* BlueNexus – Projektseite. Reines CSS, keine Fremd-Schriften. Dunkel = Standard, Hell/Auto per Schalter (data-theme am <html>). */
:root{
  --bg:#0a0d12;--bg2:#10151c;--card:#141a22;--card2:#19212b;--line:#26303c;--line2:#34414f;
  --text:#e8edf3;--muted:#98a5b3;--blue:#005fbe;--blue-t:#4b9be6;--blue-2:#7cb8f2;--orange:#f48c24;
  --glow:rgba(0,95,190,.38);--glow2:rgba(75,155,230,.16);--shadow:0 30px 80px rgba(0,0,0,.55);
  --r:16px;--mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;
}
:root[data-theme=light]{
  --bg:#f2f5f9;--bg2:#e9eef4;--card:#fff;--card2:#f6f9fc;--line:#d4dce6;--line2:#c3cedb;
  --text:#121a24;--muted:#53616f;--blue-t:#005fbe;--blue-2:#1f7ad6;--glow:rgba(0,95,190,.2);--glow2:rgba(0,95,190,.08);
  --shadow:0 24px 60px rgba(25,45,75,.22);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overflow-x:clip;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:radial-gradient(1100px 560px at 82% -10%,var(--glow),transparent 70%),radial-gradient(900px 520px at -10% 38%,var(--glow2),transparent 70%)}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 72%);mask-image:radial-gradient(ellipse at 50% 0%,#000 0%,transparent 72%)}
a{color:var(--blue-t)}
img{max-width:100%;height:auto}
.wrap{max-width:1240px;margin:0 auto;padding:0 20px}
.mono{font-family:var(--mono)}
:focus-visible{outline:2px solid var(--blue-t);outline-offset:3px;border-radius:6px}

/* ---------- Kopfzeile ---------- */
.top{position:sticky;top:0;z-index:30;border-bottom:1px solid transparent;transition:background .25s,border-color .25s,backdrop-filter .25s}
.top.scrolled{background:color-mix(in srgb,var(--bg) 78%,transparent);backdrop-filter:blur(14px) saturate(1.3);border-bottom-color:var(--line)}
.bar{display:flex;align-items:center;gap:14px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);margin-right:auto}
.brand img{filter:drop-shadow(0 0 14px var(--glow))}
.wm{font-weight:800;font-size:1.22rem;letter-spacing:.2px}
.wm b{color:var(--blue-t);font-weight:800}
nav{display:flex;gap:2px;flex-wrap:wrap}
nav a{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:9px;font-size:.95rem;transition:color .15s,background .15s}
nav a:hover{color:var(--text)}
nav a[aria-current]{color:var(--text);background:color-mix(in srgb,var(--blue) 22%,transparent)}
.icon-btn{background:color-mix(in srgb,var(--card) 70%,transparent);border:1px solid var(--line);color:var(--text);width:38px;height:38px;border-radius:10px;font-size:1.1rem;cursor:pointer}
.icon-btn:hover{border-color:var(--blue-t)}
.btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(180deg,#0a6fd8,var(--blue));color:#fff;text-decoration:none;padding:13px 24px;border-radius:12px;font-weight:650;border:1px solid color-mix(in srgb,#fff 18%,transparent);
  box-shadow:0 8px 28px var(--glow),inset 0 1px 0 rgba(255,255,255,.18);transition:transform .15s,box-shadow .2s,filter .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 36px var(--glow),inset 0 1px 0 rgba(255,255,255,.2);filter:brightness(1.08)}
.btn.small{padding:8px 15px;font-size:.92rem;border-radius:10px}
.btn.ghost{background:color-mix(in srgb,var(--card) 60%,transparent);color:var(--text);border-color:var(--line2);box-shadow:none;backdrop-filter:blur(6px)}
.btn.ghost:hover{border-color:var(--blue-t);box-shadow:0 8px 24px var(--glow2)}
.status{background:color-mix(in srgb,var(--orange) 12%,var(--bg));border-bottom:1px solid color-mix(in srgb,var(--orange) 32%,var(--line));font-size:.86rem;padding:7px 0}
.status a{color:var(--orange)}

/* ---------- Typografie ---------- */
h1{font-size:clamp(1.9rem,3.7vw,3rem);line-height:1.08;margin:0 0 18px;letter-spacing:-.02em}
h2{font-size:clamp(1.65rem,3.4vw,2.4rem);line-height:1.15;margin:0 0 14px;letter-spacing:-.015em}
h3{margin:0 0 8px;font-size:1.2rem}
p{margin:0 0 14px}
.lead{font-size:1.18rem;color:var(--muted);max-width:44rem}
.grad{background:linear-gradient(100deg,var(--blue-2),var(--blue-t) 40%,#8fd0ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.kicker{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blue-t);margin-bottom:12px}
.kicker::before{content:"";width:28px;height:1px;background:var(--blue-t)}
section{padding:84px 0;position:relative}
.sec-head{max-width:46rem;margin-bottom:34px}
code{font-family:var(--mono);font-size:.9em}
.muted{color:var(--muted)}

/* ---------- Hero ---------- */
.hero{padding:44px 0 30px;overflow:hidden}
#net{position:absolute;inset:0;width:100%;height:100%;z-index:-1;opacity:.75;pointer-events:none}
.hero-grid{display:grid;gap:34px;grid-template-columns:minmax(0,.95fr) minmax(0,1.3fr);align-items:center}
.hero h1 span{display:block}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 10px}
.vic{max-width:40rem;display:flex;gap:12px;border:1px solid color-mix(in srgb,var(--blue-t) 40%,var(--line));background:linear-gradient(135deg,color-mix(in srgb,var(--blue) 18%,var(--card)),var(--card));padding:14px 16px;border-radius:var(--r);margin:20px 0 0;font-size:.95rem}
.vic .ico{font-size:1.4rem;line-height:1.2}
.demo-box{margin-top:14px;display:inline-flex;flex-wrap:wrap;gap:6px 14px;background:color-mix(in srgb,var(--card) 80%,transparent);border:1px solid var(--line);border-radius:12px;padding:10px 15px;font-size:.9rem;color:var(--muted)}
.demo-box code{color:var(--text);background:color-mix(in srgb,var(--blue) 14%,transparent);padding:2px 7px;border-radius:6px}
.stage{position:relative;perspective:1600px;min-height:420px}
.stage .layer{position:absolute;transition:transform .3s ease-out;will-change:transform;transform:translate3d(calc(var(--px,0)*var(--dx,0)*1px),calc(var(--py,0)*var(--dy,0)*1px),0)}
.stage .l1{--dx:-8;--dy:-5}.stage .l2{--dx:26;--dy:16}.stage .l3{--dx:-30;--dy:-18}
.stage .l1{inset:6% 0 auto 4%;width:92%}
.stage .l2{left:-3%;bottom:-2%;width:48%}
.stage .l3{right:-2%;top:-5%;width:46%}
.stage .tilt-in{box-shadow:var(--shadow)}

/* ---------- 3D-Bilder ---------- */
.tilt{perspective:1400px}
.tilt-in{--rx:3deg;--ry:-7deg;position:relative;transform:rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) translateZ(0);transform-style:preserve-3d;transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .3s;
  border-radius:14px;border:1px solid var(--line2);background:var(--card);overflow:hidden;box-shadow:var(--shadow)}
.tilt.live .tilt-in{transition:transform .08s linear}
.tilt .frame{display:flex;align-items:center;gap:6px;height:28px;padding:0 12px;background:linear-gradient(180deg,var(--card2),var(--card));border-bottom:1px solid var(--line)}
.tilt .frame i{width:9px;height:9px;border-radius:50%;background:var(--line2)}
.tilt .frame i:nth-child(1){background:#e5534b}.tilt .frame i:nth-child(2){background:#e0a93b}.tilt .frame i:nth-child(3){background:#46b36a}
.tilt .frame .url{margin-left:12px;font-family:var(--mono);font-size:.68rem;color:var(--muted);background:color-mix(in srgb,var(--bg) 60%,transparent);border-radius:6px;padding:2px 10px}
.tilt img{display:block;width:100%;height:auto}
.glare{position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .3s;
  background:radial-gradient(500px circle at var(--gx,50%) var(--gy,0%),rgba(255,255,255,.22),transparent 55%);mix-blend-mode:soft-light}
.tilt.live .glare{opacity:1}
[data-theme=dark] .only-light,[data-theme=light] .only-dark{display:none}

/* ---------- Handy ---------- */
.phones{display:flex;justify-content:center;gap:clamp(8px,2.6vw,30px);align-items:flex-end;flex-wrap:wrap}
.phone{width:clamp(150px,22vw,250px)}
.phone:nth-child(2){margin-bottom:34px}
.phone .tilt-in{border-radius:38px;padding:0;border:0;background:transparent;box-shadow:var(--shadow)}
.phone .bezel{position:relative;border-radius:38px;border:8px solid #05070a;background:#05070a;overflow:hidden;box-shadow:0 0 0 1px var(--line2),inset 0 0 0 1px #20262e}
:root[data-theme=light] .phone .bezel{border-color:#1b222b;background:#1b222b}
.phone .isl{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:34%;height:15px;background:#000;border-radius:12px;z-index:2}
.phone img{border-radius:28px}

/* ---------- Karten / Raster ---------- */
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.card{background:linear-gradient(180deg,color-mix(in srgb,var(--card2) 70%,var(--card)),var(--card));border:1px solid var(--line);border-radius:var(--r);padding:22px;position:relative;transition:border-color .2s,transform .2s,box-shadow .2s}
a.card,.card.hov:hover{border-color:var(--blue-t);box-shadow:0 14px 40px var(--glow2);transform:translateY(-3px)}
.card p{margin:6px 0 0;color:var(--muted);font-size:.96rem}
.ico{font-size:1.6rem;display:block;margin-bottom:8px}
.pill{display:inline-block;border:1px solid var(--line2);border-radius:999px;padding:4px 12px;font-size:.85rem;margin:3px 3px 3px 0;color:var(--muted);background:color-mix(in srgb,var(--card) 70%,transparent)}
.checks{list-style:none;padding:0;margin:14px 0 0;display:grid;gap:8px}
.checks li{position:relative;padding-left:26px;color:var(--muted);font-size:.97rem}
.checks li::before{content:"";position:absolute;left:0;top:.5em;width:14px;height:8px;border-left:2px solid var(--blue-t);border-bottom:2px solid var(--blue-t);transform:rotate(-45deg) scale(.9)}
.checks li b{color:var(--text)}

/* ---------- Funktions-Reihen ---------- */
.feature{display:grid;gap:40px;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);align-items:center;margin:0 0 96px}
.feature.rev{grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr)}
.feature.rev .txt{order:2}
.feature .num{font-family:var(--mono);color:var(--blue-t);font-size:.8rem;letter-spacing:.12em}
.feature h3{font-size:clamp(1.4rem,2.6vw,1.9rem);line-height:1.2;margin:6px 0 12px}
.feature.rev .tilt-in{--ry:7deg}
.phones>:nth-child(odd) .tilt-in{--ry:9deg;--rx:2deg}
.phones>:nth-child(even) .tilt-in{--ry:-9deg;--rx:2deg}
.phone .tilt-in{--rx:2deg}

/* ---------- Scrollytelling ---------- */
.story{display:grid;gap:50px;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}
.story .steps{padding:6vh 0}
.story .step{min-height:54vh;display:flex;flex-direction:column;justify-content:center;opacity:.35;transition:opacity .4s}
.story .step.on{opacity:1}
.story .step .num{font-family:var(--mono);color:var(--blue-t);font-size:.8rem;letter-spacing:.12em}
.story .sticky{position:sticky;top:96px;height:calc(100svh - 130px);display:flex;align-items:center}
.story .stack{position:relative;width:100%}
.story .stack .sfig{position:absolute;inset:0;margin:auto;height:max-content;opacity:0;transform:translateY(24px) scale(.96);transition:opacity .5s,transform .5s;pointer-events:none}
.story .stack .sfig.on{opacity:1;transform:none;pointer-events:auto}
.story .stack .sfig:first-child{position:relative}
.story .step-img{display:none}

/* ---------- Victron-Diagramm ---------- */
.flow{width:100%;height:auto;margin:6px 0 4px}
.flow .node rect{fill:var(--card);stroke:var(--line2);stroke-width:1.5}
.flow .node.hl rect{stroke:var(--blue-t);fill:color-mix(in srgb,var(--blue) 16%,var(--card))}
.flow text{fill:var(--text);font:600 15px system-ui,sans-serif}
.flow .sub{fill:var(--muted);font:500 12px var(--mono)}
.flow .wire{stroke:var(--blue-t);stroke-width:2;fill:none;stroke-dasharray:6 8;animation:dash 1.4s linear infinite}
.flow .wire.ora{stroke:var(--orange)}
@keyframes dash{to{stroke-dashoffset:-28}}

/* ---------- Zeitleiste ---------- */
.timeline{position:relative;margin:10px 0 0;padding-left:30px;max-width:46rem}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--blue-t),transparent)}
.tl{position:relative;padding:0 0 30px}
.tl::before{content:"";position:absolute;left:-30px;top:5px;width:16px;height:16px;border-radius:50%;background:var(--bg);border:2px solid var(--blue-t);box-shadow:0 0 0 5px var(--glow2)}
.tl .when{font-family:var(--mono);font-size:.78rem;letter-spacing:.1em;color:var(--blue-t);text-transform:uppercase}
.tl h3{margin:4px 0 6px}
.tl p{color:var(--muted);margin:0}

/* ---------- Hinweiskästen / Seiten ---------- */
.shot{background:var(--card);border:1px dashed var(--line);border-radius:var(--r);padding:60px 20px;text-align:center;color:var(--muted)}
.note{border-left:4px solid var(--orange);background:color-mix(in srgb,var(--orange) 10%,var(--card));padding:14px 16px;border-radius:0 var(--r) var(--r) 0}
.todo{border-left:4px solid var(--blue-t);background:color-mix(in srgb,var(--blue) 10%,var(--card));padding:14px 16px;border-radius:0 var(--r) var(--r) 0}
pre{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;overflow-x:auto;font-size:.9rem;font-family:var(--mono)}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:10px 0}
summary{cursor:pointer;font-weight:600}
.page{padding:48px 0 20px;max-width:46rem}
.page h2{margin-top:32px}
.shotfig{margin:0;border:1px solid var(--line2);border-radius:var(--r);overflow:hidden;background:var(--card);box-shadow:var(--shadow)}
.shotfig img{display:block;width:100%;height:auto}
.shots{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr))}
.shots figure{margin:0}
.shots figcaption{margin:8px 2px 0;color:var(--muted);font-size:.92rem}
footer{border-top:1px solid var(--line);margin-top:40px;padding:30px 0;color:var(--muted);font-size:.9rem;background:color-mix(in srgb,var(--bg) 70%,transparent)}
.foot{display:flex;gap:24px;flex-wrap:wrap;justify-content:space-between}
.links{display:flex;gap:16px;flex-wrap:wrap}
table{border-collapse:collapse;width:100%;font-size:.95rem}
td,th{border-bottom:1px solid var(--line);padding:9px 8px;text-align:left;vertical-align:top}

/* ---------- Einblend-Effekte (nur mit JavaScript) ---------- */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0s)}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.left{transform:translateX(-34px)}
.js .reveal.right{transform:translateX(34px)}
.js .reveal.zoom{transform:scale(.94)}

/* ---------- Schmale Bildschirme ---------- */
@media(max-width:900px){
  .hero-grid,.feature,.feature.rev,.story{grid-template-columns:minmax(0,1fr)}
  .feature.rev .txt{order:0}
  .feature{gap:22px;margin-bottom:64px}
  .stage{min-height:0;margin-top:10px}
  .stage .layer{position:relative;inset:auto;width:100%;margin-bottom:14px}
  .stage .l2,.stage .l3{display:none}
  .story .sticky{display:none}
  .story .steps{padding:0}
  .story .step{min-height:0;opacity:1;margin-bottom:46px}
  .story .step-img{display:block;margin-top:16px}
  section{padding:60px 0}
}
@media(max-width:640px){.bar{padding-top:8px;padding-bottom:8px}nav{order:5;width:100%}.phone{width:clamp(120px,40vw,200px)}.phone:nth-child(2){margin-bottom:0}}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
  .tilt-in{transform:none!important}
}

/* ---------- Hardware (Produktfotos) ---------- */
.hw{display:grid;gap:26px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));margin-top:34px}
.hw-item{text-align:center;background:linear-gradient(180deg,color-mix(in srgb,var(--card2) 70%,var(--card)),var(--card));border:1px solid var(--line);border-radius:var(--r);padding:26px 22px 24px}
.hw-item img{display:block;margin:0 auto 18px;max-height:290px;width:auto;max-width:100%;filter:drop-shadow(0 22px 26px rgba(0,0,0,.5))}
:root[data-theme=light] .hw-item img{filter:drop-shadow(0 18px 22px rgba(25,45,75,.28))}
.hw-item h3{margin-bottom:6px}
.hw-item p{color:var(--muted);margin:0;font-size:.96rem}
.float{animation:floaty 7s ease-in-out infinite}
.hw-item:nth-child(2) .float{animation-delay:-3.5s}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(-.4deg)}50%{transform:translateY(-9px) rotate(.4deg)}}
.credit{font-size:.82rem;color:var(--muted);margin:14px 0 0}

.vlogo{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:0 0 14px;color:var(--muted);font-size:.9rem}
.vlogo img{height:30px;width:auto}

/* Sicherheitsnetz: Faellt das Skript aus, blendet sich verstecktes nach 2,5 s von selbst ein */
@keyframes revealFallback{to{opacity:1;transform:none}}
.js .reveal:not(.in){animation:revealFallback .01s linear 2.5s forwards}

/* ---------- Mit oder ohne Victron / Vorteile ---------- */
.duo{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));margin-bottom:22px}
.panel{position:relative;overflow:hidden;border:1px solid color-mix(in srgb,var(--blue-t) 45%,var(--line));border-radius:var(--r);padding:28px;
  background:linear-gradient(145deg,color-mix(in srgb,var(--blue) 22%,var(--card)),var(--card) 70%)}
.panel.alt{border-color:color-mix(in srgb,var(--orange) 45%,var(--line));background:linear-gradient(145deg,color-mix(in srgb,var(--orange) 14%,var(--card)),var(--card) 70%)}
.panel .tag{display:inline-block;font-family:var(--mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--blue-t);margin-bottom:10px}
.panel.alt .tag{color:var(--orange)}
.panel h3{font-size:1.45rem;margin-bottom:10px}
.panel h3 em{font-style:normal;color:var(--blue-t)}
.panel p{color:var(--muted)}
.panel a{font-weight:600;text-decoration:none}
.panel a:hover{text-decoration:underline}
.usps{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.usp{background:linear-gradient(180deg,color-mix(in srgb,var(--card2) 70%,var(--card)),var(--card));border:1px solid var(--line);border-radius:var(--r);padding:22px}
.usp h3{font-size:1.08rem;margin-bottom:6px}
.usp p{color:var(--muted);font-size:.95rem;margin:0}
.tl p{max-width:44rem}

/* ---------- Dauerbewegung (auch ohne Maus sichtbar) ---------- */
@keyframes drift{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.stage .tilt{animation:drift 9s ease-in-out infinite}
.stage .l2 .tilt{animation-delay:-3s;animation-duration:8s}
.stage .l3 .tilt{animation-delay:-6s;animation-duration:10s}
.phone{animation:drift 8s ease-in-out infinite}
.phones>:nth-child(2) .phone{animation-delay:-2s}
.phones>:nth-child(3) .phone{animation-delay:-4s}
.phones>:nth-child(4) .phone{animation-delay:-6s}