.global-header {
    background: rgba(31, 41, 55, 0.9); /* Transparenter, dunkler Hintergrund */
    padding: 1rem;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(10px); /* Weicher Unschärfe-Effekt */
}

/* Navigation */
.global-header nav ul {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    color: #D1D5DB; /* Hellgrau */
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease-in-out;
}

.nav-link:hover {
    color: #60A5FA; /* Blau */
}

/* Logo */
.global-header img {
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}