:root{
  --bg:#0a0e1a;--bg2:#0d1424;--card:rgba(22,31,51,.6);--txt:#e8edf7;--muted:#94a3b8;
  --brand:#3b82f6;--brand2:#8b5cf6;--accent:#fbbf24;--green:#22c55e;--border:rgba(148,163,184,.15);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);
  color:var(--txt);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--brand),var(--brand2));
  color:#fff;padding:15px 32px;border-radius:12px;font-weight:700;font-size:16px;border:none;cursor:pointer;
  transition:transform .2s,box-shadow .2s;position:relative;overflow:hidden}
.btn:hover{transform:translateY(-3px);box-shadow:0 12px 32px rgba(59,130,246,.4)}
.btn::after{content:'';position:absolute;top:0;left:-120%;width:55%;height:100%;
  background:linear-gradient(120deg,transparent,rgba(255,255,255,.35),transparent);transform:skewX(-20deg);transition:left .6s}
.btn:hover::after{left:130%}
.btn-xl{padding:18px 44px;font-size:18px}
.btn-ghost{background:transparent;border:1.5px solid var(--border);color:var(--txt)}
.btn-ghost:hover{border-color:var(--brand);box-shadow:none;background:rgba(59,130,246,.08)}

/* Header */
header{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,backdrop-filter .3s;padding:18px 0}
header.scrolled{background:rgba(10,14,26,.85);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between}
.logo{font-size:24px;font-weight:900;letter-spacing:-.5px}
.logo span{background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{color:var(--muted);font-weight:500;font-size:15px;transition:color .2s}
.nav-links a:hover{color:var(--txt)}

/* Hero mit 3D */
/* 3D-Canvas: durchgehend fixed hinter der ganzen Seite */
#hero3d{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-overlay{position:absolute;inset:0;z-index:1;background:
  linear-gradient(90deg,rgba(10,14,26,.92) 0%,rgba(10,14,26,.6) 40%,transparent 70%),
  linear-gradient(0deg,rgba(10,14,26,.9),transparent 40%)}
.hero-content{position:relative;z-index:3;max-width:680px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(59,130,246,.12);
  border:1px solid rgba(59,130,246,.3);color:#93c5fd;padding:8px 16px;border-radius:30px;font-size:14px;font-weight:600;margin-bottom:24px}
.hero h1{font-size:clamp(38px,6vw,72px);font-weight:900;line-height:1.05;letter-spacing:-2px;margin-bottom:24px}
.hero h1 .grad{background:linear-gradient(135deg,#fff,#93c5fd,#c4b5fd);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero h1 .accent{background:linear-gradient(135deg,var(--accent),#f97316);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p{font-size:clamp(17px,2.2vw,22px);color:var(--muted);margin-bottom:36px;max-width:560px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:48px;flex-wrap:wrap}
.stat strong{display:block;font-size:32px;font-weight:900;background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat span{font-size:14px;color:var(--muted)}
.scroll-ind{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:3;color:var(--muted);font-size:13px;letter-spacing:2px;text-transform:uppercase;animation:bob 2s infinite}
@keyframes bob{0%,100%{transform:translateX(-50%) translateY(0);opacity:.5}50%{transform:translateX(-50%) translateY(-8px);opacity:1}}

/* Sektionen */
.section{padding:110px 0;position:relative;z-index:2}
/* halbtransparente Sektions-Hintergründe, damit 3D-Welt durchscheint */
#services{background:linear-gradient(180deg,transparent,rgba(10,14,26,.82) 12%,rgba(10,14,26,.82) 88%,transparent)}
#prozess{background:rgba(13,20,36,.78)!important;backdrop-filter:blur(3px)}
#warum{background:linear-gradient(180deg,transparent,rgba(10,14,26,.82) 12%,rgba(10,14,26,.82) 88%,transparent)}
#kontakt{background:rgba(13,20,36,.85)!important;backdrop-filter:blur(4px)}
footer{position:relative;z-index:2;background:rgba(10,14,26,.9)}
.section-tag{color:var(--brand);font-weight:700;font-size:14px;letter-spacing:2px;text-transform:uppercase;margin-bottom:14px}
.section-title{font-size:clamp(30px,4.5vw,52px);font-weight:900;letter-spacing:-1.5px;line-height:1.1;margin-bottom:18px}
.section-sub{font-size:18px;color:var(--muted);max-width:640px;margin-bottom:56px}
.center{text-align:center}.center .section-sub{margin-left:auto;margin-right:auto}

/* Service-Cards */
.services{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:28px}
.svc{background:var(--card);backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:20px;
  padding:38px 32px;transition:transform .3s,border-color .3s;position:relative;overflow:hidden}
.svc:hover{transform:translateY(-8px);border-color:rgba(59,130,246,.5)}
.svc::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--brand),var(--brand2));transform:scaleX(0);transition:transform .3s;transform-origin:left}
.svc:hover::before{transform:scaleX(1)}
.svc-icon{font-size:44px;margin-bottom:20px;display:block}
.svc h3{font-size:24px;font-weight:800;margin-bottom:12px}
.svc p{color:var(--muted);font-size:16px;margin-bottom:20px}
.svc ul{list-style:none}
.svc li{color:var(--txt);font-size:15px;margin-bottom:10px;padding-left:28px;position:relative}
.svc li::before{content:'✓';position:absolute;left:0;color:var(--green);font-weight:900}

/* Prozess */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px;counter-reset:step}
.step{position:relative;padding:32px;background:var(--card);backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:18px}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);display:block;font-size:48px;font-weight:900;
  background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:12px;opacity:.6}
.step h3{font-size:20px;font-weight:800;margin-bottom:8px}
.step p{color:var(--muted);font-size:15px}

/* CTA-Band */
.cta-band{background:linear-gradient(135deg,rgba(59,130,246,.15),rgba(139,92,246,.15));
  border:1px solid var(--border);border-radius:28px;padding:64px 48px;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 20%,rgba(59,130,246,.2),transparent 60%)}
.cta-band > *{position:relative;z-index:1}

/* Kontaktformular */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.form{background:var(--card);backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:24px;padding:40px}
.form-row{margin-bottom:20px}
.form label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--txt)}
.form input,.form textarea,.form select{width:100%;background:rgba(10,14,26,.6);border:1px solid var(--border);
  border-radius:12px;padding:14px 16px;color:var(--txt);font-size:15px;font-family:inherit;transition:border-color .2s}
.form input:focus,.form textarea:focus,.form select:focus{outline:none;border-color:var(--brand)}
.form textarea{resize:vertical;min-height:120px}

/* Footer */
footer{border-top:1px solid var(--border);padding:56px 0 32px;color:var(--muted)}
.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:40px;margin-bottom:40px}
.footer-col h4{color:var(--txt);font-size:15px;margin-bottom:16px}
.footer-col a{display:block;color:var(--muted);font-size:14px;margin-bottom:10px;transition:color .2s}
.footer-col a:hover{color:var(--txt)}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

/* Reveal-Animation */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .8s cubic-bezier(.2,.8,.3,1),transform .8s cubic-bezier(.2,.8,.3,1)}
.reveal.in{opacity:1;transform:none}

@media(max-width:860px){
  .nav-links{display:none}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .hero-overlay{background:linear-gradient(0deg,rgba(10,14,26,.95) 20%,rgba(10,14,26,.6))}
  .section{padding:70px 0}
}