:root {
  --bg: #05070f; --bg2: #0a0f1e; --panel: rgba(15,25,45,0.75);
  --text: #d6e6ff; --text-dim: #7d94b8;
  --accent1: #00f0ff; --accent2: #b300ff; --accent3: #00ff9d;
  --border: rgba(0,240,255,0.25);
}
[data-theme="light"] {
  --bg: #eef3fb; --bg2: #dde7f5; --panel: rgba(255,255,255,0.8);
  --text: #0a1a30; --text-dim: #445a78;
  --accent1: #0088cc; --accent2: #7a00cc; --accent3: #00a86b;
  --border: rgba(0,136,204,0.3);
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family:'Segoe UI','Roboto',sans-serif; background:var(--bg); color:var(--text);
  overflow-x:hidden; transition:background 0.4s,color 0.4s; min-height:100vh;
}
#binary-canvas { position:fixed; top:0; left:0; width:100%; height:100%; z-index:0; opacity:0.45; pointer-events:none; }
.glow-orbs { position:fixed; inset:0; z-index:0; pointer-events:none; overflow:hidden; }
.orb { position:absolute; border-radius:50%; filter:blur(80px); opacity:0.4; animation:float 18s infinite ease-in-out; }
.orb1 { width:400px; height:400px; background:var(--accent1); top:-100px; left:-100px; }
.orb2 { width:350px; height:350px; background:var(--accent2); bottom:-100px; right:-80px; animation-delay:-6s; }
.orb3 { width:300px; height:300px; background:var(--accent3); top:40%; left:60%; animation-delay:-12s; }
@keyframes float { 0%,100%{transform:translate(0,0) scale(1);} 33%{transform:translate(60px,-40px) scale(1.15);} 66%{transform:translate(-40px,50px) scale(0.9);} }

.wrapper { position:relative; z-index:2; }
header {
  display:flex; align-items:center; justify-content:space-between; padding:18px 40px;
  background:var(--panel); backdrop-filter:blur(14px); border-bottom:1px solid var(--border);
  position:sticky; top:0; z-index:100; flex-wrap:wrap; gap:15px;
}
.logo {
  font-size:1.8rem; font-weight:800; letter-spacing:3px;
  background:linear-gradient(90deg,var(--accent1),var(--accent2),var(--accent3));
  background-size:200% auto; -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent; animation:shimmer 4s linear infinite; cursor:pointer;
}
@keyframes shimmer { to { background-position:200% center; } }
nav { display:flex; gap:8px; flex-wrap:wrap; }
nav button.navlink {
  background:transparent; border:1px solid transparent; color:var(--text-dim);
  padding:10px 18px; border-radius:8px; cursor:pointer; font-size:0.95rem; font-weight:600;
  letter-spacing:1px; text-transform:uppercase; transition:all 0.25s;
}
nav button.navlink:hover { color:var(--accent1); border-color:var(--border); box-shadow:0 0 15px rgba(0,240,255,0.2); }
nav button.navlink.active { color:var(--bg); background:linear-gradient(90deg,var(--accent1),var(--accent3)); box-shadow:0 0 20px rgba(0,240,255,0.4); }
.controls { display:flex; align-items:center; gap:12px; }
.lang-select {
  background:var(--bg2); color:var(--text); border:1px solid var(--border);
  padding:9px 12px; border-radius:8px; cursor:pointer; font-weight:600; outline:none;
}
.lang-select:hover { box-shadow:0 0 12px rgba(179,0,255,0.3); }
.theme-btn {
  background:var(--bg2); border:1px solid var(--border); color:var(--text);
  width:44px; height:44px; border-radius:50%; cursor:pointer; font-size:1.2rem;
  display:flex; align-items:center; justify-content:center; transition:all 0.3s;
}
.theme-btn:hover { transform:rotate(20deg); box-shadow:0 0 18px var(--accent1); }

main { max-width:1200px; margin:0 auto; padding:50px 30px; }
.page { display:none; animation:fadeIn 0.5s ease; }
.page.active { display:block; }
@keyframes fadeIn { from{opacity:0;transform:translateY(20px);} to{opacity:1;transform:translateY(0);} }

.hero { text-align:center; padding:60px 20px; }
.hero h1 { font-size:clamp(2rem,6vw,4rem); font-weight:900; letter-spacing:2px; margin-bottom:20px; line-height:1.1; }
.hero h1 span { background:linear-gradient(90deg,var(--accent1),var(--accent2)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.hero p { font-size:1.2rem; color:var(--text-dim); max-width:600px; margin:0 auto 30px; }
.cta { background:linear-gradient(90deg,var(--accent1),var(--accent3)); color:var(--bg); border:none; padding:15px 40px; font-size:1.1rem; font-weight:700; border-radius:10px; cursor:pointer; letter-spacing:1px; transition:all 0.3s; }
.cta:hover { transform:translateY(-3px); box-shadow:0 10px 30px rgba(0,240,255,0.4); }

.section-title { font-size:2rem; margin-bottom:10px; letter-spacing:1px; }
.section-sub { color:var(--text-dim); margin-bottom:35px; }
.grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:24px; }

.card { background:var(--panel); backdrop-filter:blur(10px); border:1px solid var(--border); border-radius:14px; padding:26px; transition:all 0.3s; position:relative; overflow:hidden; }
.card::before { content:""; position:absolute; top:0; left:0; width:100%; height:3px; background:linear-gradient(90deg,var(--accent1),var(--accent2),var(--accent3)); transform:scaleX(0); transform-origin:left; transition:transform 0.4s; }
.card:hover { transform:translateY(-6px); border-color:var(--accent1); box-shadow:0 12px 40px rgba(0,240,255,0.15); }
.card:hover::before { transform:scaleX(1); }
.card .icon { font-size:2.4rem; margin-bottom:14px; }
.card h3 { font-size:1.25rem; margin-bottom:10px; }
.card p { color:var(--text-dim); font-size:0.95rem; line-height:1.5; margin-bottom:15px; }
.card .card-btn { background:var(--bg2); color:var(--accent1); border:1px solid var(--border); padding:9px 18px; border-radius:8px; cursor:pointer; font-weight:600; transition:all 0.25s; }
.card .card-btn:hover { background:var(--accent1); color:var(--bg); }

.dl-item { display:flex; align-items:center; justify-content:space-between; background:var(--panel); border:1px solid var(--border); border-radius:12px; padding:18px 24px; margin-bottom:14px; transition:all 0.25s; flex-wrap:wrap; gap:12px; }
.dl-item:hover { border-color:var(--accent3); box-shadow:0 0 20px rgba(0,255,157,0.12); }
.dl-info { display:flex; align-items:center; gap:16px; }
.dl-info .di { font-size:2rem; }
.dl-meta small { color:var(--text-dim); }
.dl-btn { background:linear-gradient(90deg,var(--accent3),var(--accent1)); color:var(--bg); border:none; padding:11px 24px; border-radius:8px; font-weight:700; cursor:pointer; transition:transform 0.2s; }
.dl-btn:hover { transform:scale(1.05); }
a.dl-btn {
  display: inline-block;
  text-decoration: none;
  text-align: center;
}

.news-item { background:var(--panel); border:1px solid var(--border); border-left:4px solid var(--accent2); border-radius:12px; padding:24px; margin-bottom:18px; transition:all 0.25s; }
.news-item:hover { transform:translateX(6px); }
.news-item .date { color:var(--accent1); font-size:0.85rem; font-weight:600; letter-spacing:1px; }
.news-item h3 { margin:8px 0; font-size:1.3rem; }
.news-item p { color:var(--text-dim); line-height:1.6; }

.contact-form { max-width:600px; background:var(--panel); border:1px solid var(--border); border-radius:16px; padding:34px; }
.contact-form label { display:block; margin-bottom:6px; font-weight:600; }
.contact-form input, .contact-form textarea { width:100%; background:var(--bg2); border:1px solid var(--border); color:var(--text); padding:13px; border-radius:8px; margin-bottom:20px; font-size:1rem; outline:none; transition:border 0.25s; }
.contact-form input:focus, .contact-form textarea:focus { border-color:var(--accent1); box-shadow:0 0 12px rgba(0,240,255,0.2); }
.contact-form textarea { min-height:130px; resize:vertical; }

footer { text-align:center; padding:30px; color:var(--text-dim); border-top:1px solid var(--border); background:var(--panel); position:relative; z-index:2; }

.toast { position:fixed; bottom:30px; left:50%; transform:translateX(-50%) translateY(100px); background:linear-gradient(90deg,var(--accent1),var(--accent3)); color:var(--bg); padding:14px 28px; border-radius:10px; font-weight:700; z-index:999; opacity:0; transition:all 0.4s; }
.toast.show { transform:translateX(-50%) translateY(0); opacity:1; }

@media (max-width:768px){ header{padding:14px 18px;} .logo{font-size:1.4rem;} main{padding:30px 16px;} }
/* ===== ERWEITERTES DROPDOWN-MENÜ ===== */
.dropdown { position: relative; display: inline-block; }
.dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  top: 110%;
  background: var(--panel);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: 10px;
  min-width: 200px;
  box-shadow: 0 10px 30px rgba(0,240,255,0.2);
  overflow: hidden;
  z-index: 200;
  animation: fadeIn 0.25s ease;
}
.dropdown-content.show { display: block; }
.dropdown-content a {
  display: block;
  padding: 13px 18px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 1px;
  transition: all 0.2s;
}
.dropdown-content a:hover {
  background: linear-gradient(90deg, var(--accent1), var(--accent3));
  color: var(--bg);
}