header {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 5px 20px;
}

/* Layout */
.header-container {
    max-width: 1200px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
}

/* Logo größer */
.logo img {
    width: 210px;
    transition: transform 0.2s ease;
}

/* Navigation */
nav ul {
    display: flex;
    gap: 25px;
    list-style: none;
    align-items: center;
}

/* Links */
nav a {
    text-decoration: none;
    color: #111;
    font-size: 16px;
    font-weight: 500;
    position: relative;
}

/* Blaue Linie */
nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background: #0055a4;
    transition: width 0.3s;
}

nav a:hover::after {
    width: 100%;
}

/* CTA Blau */
.cta {
    background: #0055a4;
    color: white !important;
    padding: 8px 16px;
    border-radius: 8px;
    transition: 0.2s;
}

.cta:hover {
    background: #003d75;
    transform: translateY(-1px);
}

/* Burger */
.menu-toggle {
    display: none;
    font-size: 26px;
    background: none;
    border: none;
    cursor: pointer;
}

/* Mobile FIX */
@media (max-width: 900px) {

    .menu-toggle {
        display: block;
    }

    nav {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;

        background: white;
        border-radius: 12px;
        margin: 0 15px;

        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transform: translateY(-10px);

        transition: 
            max-height 0.4s ease,
            opacity 0.3s ease,
            transform 0.3s ease;
    }

    nav.activemenue {
        max-height: 500px;
        opacity: 1;
        transform: translateY(0);
    }

    nav ul {
        flex-direction: column;
        gap: 15px;
        padding: 20px;
    }
}


nav a.activemenue {
    color: #0055a4;
    font-weight: 600;
}

nav a.activemenue::after {
    width: 100%;
}