:root{
  --bg:#0b0f14; --panel:#121821; --muted:#9aa4b2; --text:#e8edf3;
  --accent:#00b3b3; --accent-2:#7cf0d4; --border:#1f2a37; --shadow:0 10px 25px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Helvetica Neue',Arial}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:80px 0}
h1,h2,h3{line-height:1.1;margin:0 0 16px}
h1{font-size:clamp(36px,4vw,56px)}
h2{font-size:clamp(28px,3vw,40px)}
h3{font-size:clamp(20px,2.2vw,24px)}
p{color:#cfd6df;line-height:1.75;margin:0 0 14px}
.btn{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#05242a;border:0;border-radius:14px;padding:12px 18px;font-weight:700;box-shadow:var(--shadow);cursor:pointer;display:inline-block}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border);border-radius:14px;padding:12px 18px}
.btn-login{background:linear-gradient(135deg,#4a90e2,#007aff);color:#fff}

/* ===== Header / Navigation (Desktop-Default) ===== */
header.nav{position:sticky;top:0;z-index:50;background:rgba(11,15,20,.7);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.navbar{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:12px;margin-left:20px}
.brand-logo{width:36px;height:36px;border-radius:10px;overflow:hidden;border:1px solid var(--border);background:#0e1620;display:flex;align-items:center;justify-content:center}
.brand-logo img{width:100%;height:100%;object-fit:cover}
.brand-name{font-weight:800;letter-spacing:.5px}

/* Desktop: Menü rechts, Burger aus */
header nav{position:static}
nav ul{list-style:none;display:flex;gap:18px;padding:0;margin:0}
nav a{padding:10px 12px;border-radius:10px}
nav a:hover{background:rgba(255,255,255,.06)}
.nav-toggle{display:none} /* Desktop: aus */

/* ===== Layout-Sektionen ===== */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.hero .card{background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border:1px solid var(--border);border-radius:22px;padding:28px;box-shadow:var(--shadow)}
.badge{display:inline-flex;gap:8px;align-items:center;padding:6px 10px;border-radius:999px;border:1px solid var(--border);color:var(--muted);font-weight:600}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
.kpi{background:var(--panel);border:1px solid var(--border);padding:16px;border-radius:16px;text-align:center}
.kpi strong{display:block;font-size:24px}
.headshot{border-radius:24px;border:1px solid var(--border);box-shadow:var(--shadow);overflow:hidden;background:#0f141c}
.grid{display:grid;gap:22px}
.services{grid-template-columns:repeat(3,minmax(0,1fr))}
.service{padding:20px;background:var(--panel);border:1px solid var(--border);border-radius:18px}
.refs{grid-template-columns:repeat(3,minmax(0,1fr))}
.ref-card{background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:18px;display:flex;flex-direction:column;gap:10px}
.about{display:grid;grid-template-columns:1fr 1.2fr;gap:28px;align-items:center}
.about .panel{background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:22px}
.contact{display:grid;grid-template-columns:1.1fr .9fr;gap:28px}
.form{background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:22px}
input,textarea{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:#0e1620;color:var(--text);margin-top:8px}
label{font-weight:600;color:#cbd5e1}
form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
footer{border-top:1px solid var(--border);padding:30px 0;color:#9aa4b2;font-size:14px}
footer .legal{display:flex;gap:14px;flex-wrap:wrap}

/* ===== Mobile (<= 860px) ===== */
@media (max-width:860px){
  .navbar{position:relative;justify-content:flex-start}

  /* Burger EIN (rechteckig, Icon via ::before) */
  .nav-toggle{
    display:flex;
    border:1px solid var(--border);
    background:#0e1620;
    border-radius:12px;
    height:44px;
    padding:0 20px;            /* macht ihn breiter als hoch */
    margin-left:auto; margin-right:20px;
    cursor:pointer;
    position:relative; font-size:0; line-height:0;
    align-items:center; justify-content:center;
  }
  .nav-toggle::before{
    content:""; position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
    width:24px; height:3px; background:#fff; border-radius:2px;
    box-shadow:0 -8px 0 0 #fff, 0 8px 0 0 #fff;
  }

  /* Nav als Dropdown rechts oben andocken */
  header nav{position:absolute;right:20px;top:58px}

  /* Dropdown – per JS .show toggeln */
  nav ul{
    display:none; flex-direction:column;
    background:rgba(11,15,20,.98); backdrop-filter:blur(8px);
    padding:12px; border:1px solid var(--border); border-radius:14px; box-shadow:var(--shadow);
    z-index:1000;
  }
  nav ul.show{display:flex}

  .section{padding:56px 0}
  .hero{grid-template-columns:1fr}
  .hero .card{padding:20px}
  .badge{font-size:13px;padding:6px 10px}
  h1{font-size:clamp(28px,7vw,40px)}
  h2{font-size:clamp(22px,5vw,30px)}
  p{font-size:15px;line-height:1.7}
  .cta .btn,.btn{padding:10px 14px;border-radius:12px}
  .kpis{grid-template-columns:repeat(2,1fr)}
  .services,.refs,.about,.contact{grid-template-columns:1fr}
}

@media (max-width:520px){
  .section{padding:44px 0}
  .kpis{grid-template-columns:1fr}
  .brand-name{font-size:16px}
  .headshot{border-radius:16px}
}