:root{
  --bg:#0b0e14; --card:#111621; --text:#e6eaf2; --muted:#aab3c5; --acc:#5dd0ff; --acc2:#7bffb0;
  --maxw:1100px; --radius:14px; --shadow:0 10px 30px rgba(0,0,0,.25);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:linear-gradient(180deg,#0b0e14, #0e1420);color:var(--text);font:16px/1.6 system-ui,Segoe UI,Roboto,Arial,sans-serif}
a{color:var(--acc);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:24px}
.header{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;position:sticky;top:0;background:#0b0e14cc;backdrop-filter:saturate(150%) blur(6px);z-index:10;border-bottom:1px solid #141a27}
.brand{display:flex;gap:12px;align-items:center}
.brand img{width:40px;height:40px;border-radius:9px;box-shadow:var(--shadow)}
.brand__name{font-weight:700}
.nav{display:flex;gap:18px}
.nav a{padding:8px 10px;border-radius:8px}
.nav a.active,.nav a:hover{background:#121827}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center;margin-top:24px;background:var(--card);border:1px solid #182034;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.hero__img img{width:100%;height:auto;border-radius:12px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0}
.features article{background:#0f1522;border:1px solid #182034;padding:18px;border-radius:12px}
.checklist{list-style:none;padding:0}
.checklist li{padding-left:26px;position:relative;margin:8px 0}
.checklist li::before{content:"✓";position:absolute;left:0;color:var(--acc2)}
.btn{display:inline-block;padding:12px 18px;border-radius:12px;border:1px solid #253046}
.btn-primary{background:linear-gradient(135deg,var(--acc),#7fb7ff);color:#0b0e14}
.btn-secondary{background:#121c2d}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.form input,.form textarea{width:100%;padding:12px;border-radius:10px;background:#0f1522;border:1px solid #20283a;color:var(--text)}
.form button{margin-top:8px}
footer{margin-top:48px;padding:24px;border-top:1px solid #141a27;color:var(--muted)}
.muted{color:var(--muted)}
.card{background:var(--card);border:1px solid #182034;padding:18px;border-radius:12px}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.table{width:100%;border-collapse:collapse}
.table th,.table td{border-bottom:1px solid #20283a;padding:10px 8px;text-align:left}
.badge{padding:3px 8px;border:1px solid #324059;border-radius:999px;font-size:.85rem}
@media (max-width:900px){
  .hero{grid-template-columns:1fr}
  .features{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr}
  .nav{display:none}
  .nav--mobile{display:block}
}
.nav--mobile{display:none}
.hamburger{display:none}
@media (max-width:900px){.hamburger{display:block}}

.hamburger { display: none; align-items: center; justify-content: center; width: 44px; height: 44px; font-size: 22px; }
@media (max-width: 900px) {
  .hamburger { display: inline-flex; }
  .nav {
    display: none;           /* mobil: zu */
    position: absolute;      /* unter dem Header */
    left: 0; right: 0;
    top: 64px;               /* ggf. an Header-Höhe anpassen */
    padding: 12px 16px;
    background: #111621;
    border-top: 1px solid #20283a;
    flex-direction: column;
    gap: 10px;
    z-index: 40;
  }
  .nav.is-open { display: flex; }  /* mobil: offen */
}

/* Sticky-Header */
.header--sticky { position: sticky; top: 0; z-index: 100; background:#0b0e14; border-bottom:1px solid #141a27; }

/* Overlay */
#backdrop {
  position: fixed; inset: 0; background: #00000080;
  opacity: 0; visibility: hidden; transition: opacity .25s ease, visibility .25s ease;
  z-index: 70;
}
#backdrop.is-open { opacity: 1; visibility: visible; }

/* Desktop-Navigation (>=900px sichtbar) */
.nav--desktop { display: flex; gap: 14px; }

/* Hamburger-Button */
.hamburger { display: none; align-items:center; justify-content:center; width:44px; height:44px; font-size:22px; }

/* Drawer */
.nav-drawer {
  position: fixed; left: 0; top: 0; bottom: 0; width: 86vw; max-width: 320px;
  background: #111621; border-right: 1px solid #20283a; z-index: 80;
  transform: translateX(-100%); transition: transform .28s ease;
  display: flex; flex-direction: column;
}
.nav-drawer.is-open { transform: translateX(0); }
.nav-drawer__head { display:flex; align-items:center; justify-content:space-between; padding:14px 16px; border-bottom:1px solid #20283a; }
.nav-drawer__close { background:transparent; border:0; font-size:26px; color:#e6eaf2; cursor:pointer; }
.nav-drawer__links { display:flex; flex-direction:column; padding:10px; gap:8px; }
.nav-drawer__link { padding:10px 12px; border-radius:8px; background:#0f1522; border:1px solid #20283a; }
.nav-drawer__link.active { outline:2px solid rgba(93,208,255,.4); }

/* Mobile Breakpoint */
@media (max-width: 900px) {
  .nav--desktop { display: none; }
  .hamburger { display: inline-flex; }
  body.nav-open { overflow: hidden; } /* scroll lock */
}
/* Globale Headerhöhe (nur für Variante B nötig) */
:root { --header-h: 64px; }

/* Header bleibt unterhalb des Drawers/Backdrops */
.header--sticky { z-index: 100; }

/* Variante A – Drawer & Backdrop ÜBER dem Header (empfohlen) */
#backdrop { z-index: 900; }          /* war 70 */
.nav-drawer { z-index: 1000; }       /* war 80 */

/* Optional: Safe-Area-Polster oben im Drawer-Kopf (iOS Notch) */
.nav-drawer__head { padding-top: calc(14px + env(safe-area-inset-top, 0px)); }

/* Fallback: Form-Inputs in Cards auch ohne .form klassisch stylen */
.card form input[type="text"],
.card form input[type="email"],
.card form input[type="tel"],
.card form input[type="url"],
.card form input[type="password"],
.card form textarea,
.card form select {
  width: 100%;
  background: #0b0e14;
  color: #e6eaf2;
  border: 1px solid #20283a;
  border-radius: 8px;
  padding: 10px 12px;
  outline: none;
}
.card form input:focus,
.card form textarea:focus,
.card form select:focus {
  border-color: #3aa6ff;
  box-shadow: 0 0 0 3px rgba(58,166,255,.15);
}
.card form { display:block; }
.card form .grid { display:grid; grid-template-columns: 1fr 1fr; gap:12px; }
@media (max-width: 900px){ .card form .grid { grid-template-columns:1fr; } }

.card form label { display:flex; flex-direction:column; gap:6px; font-weight:500; }

.card :is(input[type="text"], input[type="email"], input[type="tel"], input[type="url"],
          input[type="password"], input[type="search"], textarea, select) {
  width:100%;
  background:#0b0e14;
  color:#e6eaf2;
  border:1px solid #20283a;
  border-radius:8px;
  padding:10px 12px;
  outline:none;
}
.card :is(input, textarea, select):focus {
  border-color:#3aa6ff;
  box-shadow:0 0 0 3px rgba(58,166,255,.15);
}
.card button[type="submit"] { margin-top:10px; }
.alert {
  margin: 10px 0 16px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 500;
}
.alert-success {
  background: #0f1f14;
  border-color: #1f5f3a;
  color: #b6f3cf;
}
.alert-error {
  background: #241012;
  border-color: #6b1f29;
  color: #ffc9d0;
}