*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --royal: #003f8a;
      --royal-light: #0057c2;
      --royal-dark: #001f44;
      --white: #f5f8ff;
      --muted: rgba(255,255,255,0.45);
    }
    body { background: var(--royal-dark); color: var(--white); font-family: 'Barlow', sans-serif; min-height: 100vh; }

    nav {
      display: flex; justify-content: space-between; align-items: center;
      padding: 1.2rem 2.5rem;
      background: rgba(0,20,60,0.88); backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255,255,255,0.07);
      position: sticky; top: 0; z-index: 100;
    }
    nav .logo { font-family: 'Bebas Neue', sans-serif; font-size: 1.7rem; letter-spacing: 0.12em; color: #fff; }
    nav ul { list-style: none; display: flex; gap: 2rem; }
    nav ul a { color: var(--muted); text-decoration: none; font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; transition: color 0.2s; }
    nav ul a:hover, nav ul a.active { color: #fff; }

    .hero { position: relative; min-height: 88vh; display: flex; align-items: center; overflow: hidden; background: linear-gradient(rgba(0,15,40,0.52), rgba(0,15,40,0.52)), url('../img/Hintergrund.jpg') center/cover no-repeat; }
    canvas#bg { display: none; }
    .hero-content { position: relative; z-index: 2; padding: 0 3rem; max-width: 820px; animation: fadeUp 0.9s ease both; }
    @keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

    .hero-tag { font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: rgba(255,255,255,0.45); margin-bottom: 1.2rem; }
    .hero h1 {
      font-family: 'Bebas Neue', sans-serif; font-size: clamp(3.5rem, 9vw, 7rem);
      line-height: 0.95; letter-spacing: 0.03em; color: #fff;
      text-shadow: 0 4px 40px rgba(0,80,200,0.7); margin-bottom: 1.6rem;
    }
    .hero h1 span { color: #7ab3ff; }
    .hero p { font-size: 1.05rem; font-weight: 300; color: rgba(255,255,255,0.6); line-height: 1.8; max-width: 480px; margin-bottom: 2.5rem; }
    .btn {
      display: inline-block; padding: 0.8rem 2.4rem;
      background: #fff; color: var(--royal-dark);
      font-family: 'Barlow', sans-serif; font-size: 0.82rem; font-weight: 500;
      letter-spacing: 0.12em; text-transform: uppercase; text-decoration: none;
      transition: background 0.2s, color 0.2s, transform 0.15s;
    }
    .btn:hover { background: var(--royal-light); color: #fff; transform: translateY(-2px); }

    .cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 1px; background: rgba(255,255,255,0.06); }
    .card { background: var(--royal-dark); padding: 2.5rem 2rem; transition: background 0.3s; }
    .card:hover { background: var(--royal); }
    .card .num { font-family: 'Bebas Neue', sans-serif; font-size: 2.5rem; color: rgba(255,255,255,0.07); line-height: 1; margin-bottom: 0.8rem; }
    .card h3 { font-family: 'Bebas Neue', sans-serif; font-size: 1.4rem; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
    .card p { font-size: 0.88rem; color: rgba(255,255,255,0.5); line-height: 1.65; font-weight: 300; }

    footer { text-align: center; padding: 2rem; font-size: 0.78rem; color: rgba(255,255,255,0.22); border-top: 1px solid rgba(255,255,255,0.07); }
    footer a { color: rgba(255,255,255,0.22); text-decoration: none; margin: 0 0.5rem; }
    footer a:hover { color: #fff; }

    /* =========================
   Dark Mode
========================= */

body.dark {
  background: #1e293b;
  color: #e2e8f0;
}

body.dark nav {
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid #334155;
}

body.dark nav .logo {
  color: #ffffff;
}

body.dark nav ul a {
  color: rgba(226, 232, 240, 0.7);
}

body.dark nav ul a:hover,
body.dark nav ul a.active {
  color: #ffffff;
}

body.dark .hero {
  background:
    linear-gradient(rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.65)),
    url('../img/Hintergrund.jpg') center/cover no-repeat;
}

body.dark .hero-tag {
  color: rgba(226, 232, 240, 0.5);
}

body.dark .hero h1 {
  color: #ffffff;
}

body.dark .hero h1 span {
  color: #60a5fa;
}

body.dark .hero p {
  color: rgba(226, 232, 240, 0.8);
}

body.dark .btn {
  background: #60a5fa;
  color: #ffffff;
}

body.dark .btn:hover {
  background: #3b82f6;
}

body.dark .card {
  background: #334155;
}

body.dark .card:hover {
  background: #475569;
}

body.dark .card p {
  color: rgba(226, 232, 240, 0.75);
}

body.dark footer {
  color: rgba(226, 232, 240, 0.6);
  border-top: 1px solid #334155;
}

body.dark footer a {
  color: rgba(226, 232, 240, 0.6);
}

body.dark footer a:hover {
  color: #ffffff;
}

/* Button-Styling */
#dark-mode-toggle {
  padding: 0.6rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.2);
  cursor: pointer;
  background: transparent;
  color: rgba(255,255,255,0.8);
  font-family: 'Barlow', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all 0.2s ease;
}

#dark-mode-toggle:hover {
  background: rgba(255,255,255,0.08);
  transform: translateY(-1px);
}

body.dark #dark-mode-toggle {
  background: #60a5fa;
  color: #0b1220;
  border-color: transparent;
  box-shadow: 0 0 18px rgba(96,165,250,0.4);
}