/* ==============================
   G KOLLEKTIV – HEADER & NAV (PULSE)
   ============================== */

header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(0,0,17,0.95);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(0,204,255,0.18);
}

.header-inner {
    max-width:960px;
    margin:0 auto;
    padding:0.6rem 0.8rem;
    display:flex;
    justify-content:center;
}

nav {
    display:flex;
    justify-content:center;
    align-items:center;
    gap:0.6rem;
    flex-wrap:wrap;
}

.nav-btn {
    position: relative;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:0.45rem 0.9rem;
    border-radius:999px;
    border:1px solid rgba(0,204,255,0.35);
    background:rgba(0,204,255,0.08);
    color:var(--text);
    text-decoration:none;
    font-size:0.88rem;
    font-weight:600;
    transition:all 0.3s ease;
    white-space:nowrap;
}

.nav-btn:hover {
    background:rgba(0,204,255,0.25);
    border-color:var(--accent);
    color:var(--accent);
    transform:translateY(-1px);
    box-shadow:0 0 8px rgba(0,204,255,0.4);
}

/* Subtiles Pulsieren */
@keyframes navPulse {
    0%, 100% {
        box-shadow:
            0 0 10px rgba(0,204,255,0.6),
            0 0 22px rgba(0,204,255,0.35);
    }
    50% {
        box-shadow:
            0 0 16px rgba(0,204,255,0.9),
            0 0 36px rgba(0,204,255,0.55);
    }
}

/* Aktiver Menüpunkt */
.nav-btn.active-nav {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(0,204,255,0.28);
    animation: navPulse 3.6s ease-in-out infinite;
}

/* Mobile */
@media (max-width:720px){
    nav{gap:0.3rem;}
    .nav-btn{
        padding:0.35rem 0.6rem;
        font-size:0.82rem;
    }
}


/* === STICKY NAV AUTO === */
#header {
    position: sticky;
    top: 0;
    z-index: 2000;
    background: rgba(0, 0, 17, 0.85);
    backdrop-filter: blur(6px);
}

/* Start-Link statt Logo */
.nav-start{
  font-weight:700;
  letter-spacing:0.08em;
}