/* ============ NUR Elektrotechnik — Redesign ============ */
:root{
  color-scheme:light;
  --bg:#f5f7fa;
  --bg-2:#eef1f6;
  --deep:#e8edf4;
  --surface:#ffffff;
  --surface-2:#f4f6f9;
  --line:rgba(10,20,40,.1);
  --line-2:rgba(10,20,40,.18);
  --txt:#101828;
  --txt-2:#475467;
  --txt-3:#98a2b3;
  --ac:#0284c7;
  --ac-deep:#0369a1;
  --ac-rgb:2,132,199;
  --ac2:#f59e0b;
  --ac2-rgb:245,158,11;
  --on-ac:#fff;
  --hero-bg:#e2e9f2;
  --nav-bg:rgba(255,255,255,.85);
  --nav-bg-solid:rgba(255,255,255,.98);
  --glow:0 0 40px rgba(var(--ac-rgb),.3);
  --r:16px;
  --wrap:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--txt);
  font-family:'Inter',system-ui,sans-serif;
  line-height:1.65;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  transition:background .4s,color .4s;
}
h1,h2,h3,h4,.brand__text{font-family:'Space Grotesk',sans-serif;line-height:1.08;font-weight:600;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.grad{position:relative;background:linear-gradient(100deg,var(--ac),var(--ac2));-webkit-background-clip:text;background-clip:text;color:transparent}
.grad::after{content:"";position:absolute;left:.02em;right:.02em;bottom:-.04em;height:.055em;border-radius:3px;background:linear-gradient(90deg,transparent 0%,var(--ac) 35%,var(--ac2) 55%,transparent 100%);background-size:220% 100%;animation:zap 2.4s linear infinite;opacity:.85}
@keyframes zap{0%{background-position:200% 0}100%{background-position:-120% 0}}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- Nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:background .4s,border-color .4s,backdrop-filter .4s;border-bottom:1px solid transparent}
.nav.scrolled{background:var(--nav-bg);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.nav__inner{max-width:var(--wrap);margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px;z-index:60}
.brand__spark{width:14px;height:14px;border-radius:50%;background:var(--ac);box-shadow:var(--glow);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.35);opacity:.7}}
.brand__text{font-size:20px;font-weight:700;letter-spacing:-.01em}
.brand__text em{color:var(--txt-2);font-style:normal;font-weight:400}
.nav__links{display:flex;align-items:center;gap:30px}
.nav__links a{font-size:15px;color:var(--txt-2);transition:color .25s;font-weight:500}
.nav__links a:hover{color:var(--txt)}
.nav__cta{display:inline-flex;align-items:center;gap:9px;padding:10px 18px;border:1px solid var(--line-2);border-radius:100px;color:var(--txt)!important;transition:border-color .25s,box-shadow .25s,background .25s}
.nav__cta:hover{border-color:var(--ac);box-shadow:var(--glow);background:rgba(var(--ac-rgb),.06)}
.nav__cta-dot{width:8px;height:8px;border-radius:50%;background:var(--ac);box-shadow:0 0 10px var(--ac)}
.nav__burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;z-index:60;padding:6px}
.nav__burger span{width:26px;height:2px;background:var(--txt);border-radius:2px;transition:.3s}
.nav__burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__burger.open span:nth-child(2){opacity:0}
.nav__burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;background:radial-gradient(120% 90% at 50% 0%,var(--hero-bg) 0%,var(--bg) 60%)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(var(--ac-rgb),.06) 1px,transparent 1px),linear-gradient(90deg,rgba(var(--ac-rgb),.06) 1px,transparent 1px);background-size:44px 44px;-webkit-mask-image:radial-gradient(110% 85% at 50% 40%,#000 35%,transparent 78%);mask-image:radial-gradient(110% 85% at 50% 40%,#000 35%,transparent 78%);pointer-events:none}
.hero__canvas{position:absolute;inset:0;width:100%;height:100%}
.hero__glow{position:absolute;top:-10%;left:50%;transform:translateX(-50%);width:900px;height:900px;max-width:120vw;background:radial-gradient(circle,rgba(var(--ac-rgb),.16),transparent 60%);filter:blur(30px);pointer-events:none}
.hero__inner{position:relative;z-index:2;max-width:var(--wrap);margin:0 auto;padding:120px 24px 80px;width:100%}
.tagline{display:inline-flex;align-items:center;gap:10px;font-size:14px;color:var(--txt-2);border:1px solid var(--line);padding:8px 16px;border-radius:100px;background:rgba(255,255,255,.6);letter-spacing:.02em}
.tagline__dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--ac2);box-shadow:0 0 10px var(--ac2)}
.hero__title{font-size:clamp(2.8rem,7vw,5.6rem);font-weight:700;margin:26px 0 24px;letter-spacing:-.03em}
.hero__lead{max-width:620px;font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--txt-2)}
.hero__actions{display:flex;flex-wrap:wrap;gap:16px;margin:38px 0 0}
.hero__hotline{display:flex;align-items:center;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero__hotline-label{font-size:13px;text-transform:uppercase;letter-spacing:.14em;color:var(--txt-3)}
.hero__hotline-num{font-family:'Space Grotesk';font-size:22px;font-weight:600;color:var(--ac2)}
.hero__scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);width:26px;height:42px;border:2px solid var(--line-2);border-radius:14px;z-index:2}
.hero__scroll span{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:4px;height:8px;background:var(--ac);border-radius:2px;animation:scroll 1.8s infinite}
@keyframes scroll{0%{opacity:0;top:8px}30%{opacity:1}60%{opacity:1}100%{opacity:0;top:24px}}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 28px;border-radius:100px;font-weight:600;font-size:15px;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s,border-color .25s;border:1px solid transparent}
.btn .arr{transition:transform .25s}
.btn:hover .arr{transform:translateX(4px)}
.btn--primary{background:linear-gradient(100deg,var(--ac),var(--ac-deep));color:var(--on-ac);box-shadow:0 8px 30px rgba(var(--ac-rgb),.28)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(var(--ac-rgb),.45)}
.btn--ghost{border-color:var(--line-2);color:var(--txt)}
.btn--ghost:hover{border-color:var(--ac);background:rgba(var(--ac-rgb),.06)}

/* ---------- Sections ---------- */
.section{position:relative;padding:120px 0}
.section__head{max-width:640px;margin:0 auto 64px;text-align:center}
.eyebrow{display:inline-block;font-size:13px;text-transform:uppercase;letter-spacing:.18em;color:var(--ac);margin-bottom:16px;font-weight:600}
.section h2{font-size:clamp(2rem,4vw,3rem)}
.section__sub{color:var(--txt-2);margin-top:16px;font-size:1.1rem}

/* ---------- About ---------- */
.about{background:linear-gradient(180deg,var(--bg),var(--bg-2))}
.about__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}
.about__text h2{font-size:clamp(1.8rem,3.2vw,2.6rem);margin:16px 0 22px}
.about__text p{color:var(--txt-2);margin-bottom:16px;max-width:52ch}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:30px 26px;transition:border-color .3s,transform .3s}
.stat:hover{border-color:rgba(var(--ac-rgb),.4);transform:translateY(-4px)}
.stat__num{display:block;font-family:'Space Grotesk';font-size:clamp(2.4rem,5vw,3.2rem);font-weight:700;color:var(--ac);line-height:1}
.stat__label{display:block;margin-top:10px;color:var(--txt-2);font-size:14px}

/* ---------- Services ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:32px 26px;overflow:hidden;transition:transform .3s,border-color .3s,box-shadow .3s;cursor:default}
.card::before{content:"";position:absolute;inset:0;background:radial-gradient(120px 120px at var(--mx,50%) var(--my,0%),rgba(var(--ac-rgb),.14),transparent 70%);opacity:0;transition:opacity .3s}
.card:hover,.card:focus-visible{transform:translateY(-6px);border-color:rgba(var(--ac-rgb),.45);box-shadow:0 16px 44px rgba(16,24,40,.14);outline:none}
.card:hover::before,.card:focus-visible::before{opacity:1}
.card__icon{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;font-size:26px;border-radius:14px;background:linear-gradient(140deg,rgba(var(--ac-rgb),.16),rgba(var(--ac2-rgb),.1));border:1px solid var(--line);margin-bottom:22px}
.card h3{font-size:1.18rem;margin-bottom:10px;position:relative}
.card p{color:var(--txt-2);font-size:.96rem;position:relative}

/* ---------- Photovoltaik ---------- */
.pv{background:linear-gradient(180deg,var(--bg-2),var(--bg));overflow:hidden}
.pv__glow{position:absolute;right:-10%;top:20%;width:600px;height:600px;background:radial-gradient(circle,rgba(var(--ac2-rgb),.18),transparent 60%);filter:blur(20px);pointer-events:none}
.pv__grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center;position:relative}
.pv__text h2{font-size:clamp(1.9rem,3.6vw,2.8rem);margin:16px 0 22px}
.pv__text>p{color:var(--txt-2);max-width:50ch;margin-bottom:26px}
.pv__list{list-style:none;margin:0 0 32px}
.pv__list li{position:relative;padding-left:32px;margin-bottom:14px;color:var(--txt)}
.pv__list li::before{content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:50%;background:var(--ac2);box-shadow:0 0 12px rgba(var(--ac2-rgb),.6)}
.pv__list li::after{content:"✓";position:absolute;left:4px;top:2px;font-size:11px;color:#1a1200;font-weight:700}
.pv__visual{display:flex;justify-content:center;align-items:center;perspective:900px}
.pv__panel{position:relative;width:min(360px,80vw);aspect-ratio:1/.82;background:linear-gradient(150deg,#0d2836,#08303a);border:1px solid rgba(var(--ac-rgb),.3);border-radius:20px;padding:22px;transform:rotateX(12deg) rotateY(-14deg);box-shadow:0 40px 80px rgba(16,24,40,.28),0 0 60px rgba(var(--ac-rgb),.12)}
.pv__sun{position:absolute;top:-34px;right:-24px;width:90px;height:90px;border-radius:50%;background:radial-gradient(circle,var(--ac2),color-mix(in srgb,var(--ac2) 65%,#a33)); box-shadow:0 0 60px rgba(var(--ac2-rgb),.7);animation:pulse 3.6s ease-in-out infinite}
.pv__cells{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(3,1fr);gap:10px;height:100%}
.pv__cells span{background:linear-gradient(140deg,rgba(var(--ac-rgb),.22),rgba(var(--ac-rgb),.05));border:1px solid rgba(var(--ac-rgb),.28);border-radius:6px;animation:cell 3s ease-in-out infinite}
.pv__cells span:nth-child(2n){animation-delay:.4s}
.pv__cells span:nth-child(3n){animation-delay:.8s}
.pv__cells span:nth-child(5n){animation-delay:1.2s}
@keyframes cell{0%,100%{opacity:.5}50%{opacity:1}}

/* ---------- Locations ---------- */
.locs{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.loc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:36px 30px;transition:transform .3s,border-color .3s}
.loc:hover{transform:translateY(-5px);border-color:var(--line-2)}
.loc--hq{background:linear-gradient(160deg,rgba(var(--ac-rgb),.09),var(--surface));border-color:rgba(var(--ac-rgb),.3)}
.loc__tag{display:inline-block;font-size:12px;text-transform:uppercase;letter-spacing:.14em;color:var(--ac);margin-bottom:14px;font-weight:600}
.loc h3{font-size:1.5rem;margin-bottom:12px}
.loc p{color:var(--txt-2);margin-bottom:18px}
.loc__link{color:var(--txt);font-weight:500;border-bottom:1px solid var(--line-2);padding-bottom:2px;transition:color .25s,border-color .25s}
.loc__link:hover{color:var(--ac);border-color:var(--ac)}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(180deg,var(--bg),var(--deep));overflow:hidden}
.cta__glow{position:absolute;top:0;left:50%;transform:translateX(-50%);width:800px;height:400px;background:radial-gradient(circle,rgba(var(--ac-rgb),.14),transparent 60%);filter:blur(20px);pointer-events:none}
.cta__inner{text-align:center;position:relative}
.cta h2{font-size:clamp(2.2rem,4.5vw,3.4rem)}
.cta__sub{color:var(--txt-2);max-width:520px;margin:16px auto 44px;font-size:1.1rem}
.cta__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:820px;margin:0 auto}
.cta__card{display:flex;flex-direction:column;gap:8px;padding:30px 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);transition:transform .3s,border-color .3s,box-shadow .3s}
.cta__card:hover{transform:translateY(-5px);border-color:rgba(var(--ac-rgb),.45);box-shadow:var(--glow)}
.cta__card-label{font-size:13px;text-transform:uppercase;letter-spacing:.12em;color:var(--txt-3)}
.cta__card-val{font-family:'Space Grotesk';font-size:1.25rem;font-weight:600}
.cta__card--hot{background:linear-gradient(160deg,rgba(var(--ac2-rgb),.12),var(--surface));border-color:rgba(var(--ac2-rgb),.35)}
.cta__card--hot .cta__card-val{color:var(--ac2)}

/* ---------- Footer ---------- */
.footer{background:var(--deep);border-top:1px solid var(--line);padding:70px 0 0}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px}
.footer__brand .brand__text{font-size:22px;font-weight:700}
.footer__brand p{color:var(--txt-2);margin-top:14px;font-size:.95rem}
.footer__col h4{font-size:14px;text-transform:uppercase;letter-spacing:.1em;color:var(--txt-3);margin-bottom:16px;font-weight:600}
.footer__col p{color:var(--txt-2);font-size:.95rem}
.footer__col a{transition:color .25s}
.footer__col a:hover{color:var(--ac)}
.footer__bar{border-top:1px solid var(--line);padding:24px;display:flex;justify-content:space-between;max-width:var(--wrap);margin:0 auto;color:var(--txt-3);font-size:13px;flex-wrap:wrap;gap:8px}

/* ---------- Micro-Interaktionen ---------- */
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:100;pointer-events:none}
.progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--ac),var(--ac2));box-shadow:0 0 12px rgba(var(--ac-rgb),.8)}

.nav__links a:not(.nav__cta){position:relative;padding-bottom:3px}
.nav__links a:not(.nav__cta)::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--ac);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .3s cubic-bezier(.2,.7,.2,1)}
.nav__links a:not(.nav__cta):hover::after{transform:scaleX(1)}

.btn--primary{position:relative;overflow:hidden}
.btn--primary::after{content:"";position:absolute;top:0;left:-70%;width:45%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.5),transparent);transform:skewX(-20deg);transition:left .6s ease}
.btn--primary:hover::after{left:130%}

.card__icon{transition:transform .4s cubic-bezier(.34,1.56,.64,1)}
.card:hover .card__icon,.card:focus-visible .card__icon{transform:scale(1.14) rotate(-6deg)}

.stat:hover .stat__num{text-shadow:0 0 24px rgba(var(--ac-rgb),.6)}
.stat__num{transition:text-shadow .3s}

.pv__panel{animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:rotateX(12deg) rotateY(-14deg) translateY(0)}50%{transform:rotateX(12deg) rotateY(-14deg) translateY(-12px)}}

.loc__tag{transition:letter-spacing .3s}
.loc:hover .loc__tag{letter-spacing:.22em}

.cta__card-val{transition:transform .3s}
.cta__card:hover .cta__card-val{transform:translateX(4px)}

.footer__col a{display:inline-block;transition:color .25s,transform .25s}
.footer__col a:hover{transform:translateX(4px)}

.hero__glow,.hero__inner{will-change:transform}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .about__grid,.pv__grid{grid-template-columns:1fr;gap:44px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .locs{grid-template-columns:1fr}
  .cta__grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
  .section{padding:88px 0}
  .nav__links{position:fixed;inset:0 0 0 auto;width:min(320px,80vw);flex-direction:column;justify-content:center;gap:26px;background:var(--nav-bg-solid);backdrop-filter:blur(16px);transform:translateX(100%);transition:transform .4s cubic-bezier(.2,.7,.2,1);border-left:1px solid var(--line)}
  .nav__links.open{transform:none}
  .nav__links a{font-size:19px}
  .nav__burger{display:flex}
}
@media(max-width:520px){
  .cards{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .hero__inner{padding-top:110px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important}
  .reveal{opacity:1;transform:none;transition:none}
}