/* === Header: Grundstruktur === */
header {
    display: flex;
    align-items:stretch;
    justify-content: space-between;
    box-sizing: border-box;
    height: 12vh;
    padding: 0 2rem 0 1rem;
    background: var(--header-bg);
    backdrop-filter: blur(var(--header-blur));
    border-bottom: 1px solid var(--header-border);
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: var(--box-shadow);
}

/* === Logo === */
.logo {
    display: flex;
    box-sizing: border-box;
    align-items: center;
    height: 100%;
    width: 180px;
}

.logo-img {
    display: flex;
    align-items:center;
    height: 100%;
    
   
}

.logo-img img {
    width: 100%;
    height: auto;
    object-fit:contain;
    transition: transform 0.3s ease;
}

.logo-img:hover img {
    transform: scale(1.05);
}

/* === Navigation === */
.navbar {
    display: flex;
    align-items: center;
    gap: 2rem;
    height: 100%;
}

/* Hauptlinks */
.dropdown-nav {
    font-family: var(--font-body);
    font-size: clamp(0.9rem, 1vw, 1.1rem);
    color: var(--c-text-secondary);
    text-decoration: none;
    padding: 0.2rem 0;
    transition: color 0.25s ease, transform 0.2s ease;
}

.dropdown-nav:hover {
    color: var(--c-primary-dark);
    transform: translateY(-2px);
}

/* Aktiver Link */
.dropdown-nav.active {
    color: var(--c-accent-dark);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* Dropdown-Container */
.dropdown-wrapper {
    position: relative;
}

.dropdown-nav-cont {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    padding: 0.8rem 1rem;
    background: var(--c-bg-card);
    border-radius: 10px;
    box-shadow: var(--box-shadow);
    flex-direction: column;
    gap: 0.4rem;
    min-width: 140px;
    z-index: 9999;
}

.dropdown-wrapper:hover .dropdown-nav-cont {
    display: flex;
}

/* Dropdown-Links */
.dropdown-nav-cont a {
    color: var(--c-text-secondary);
    font-size: 0.9rem;
    text-decoration: none;
    transition: color 0.2s ease, transform 0.2s ease;
}

.dropdown-nav-cont a:hover {
    color: var(--c-primary-dark);
    transform: translateX(4px);
}

/* === Back To Top Button === */
#toTopBtn {
    position: fixed;
    right: 2vw;
    bottom: -80vh;
    opacity: 0.5;
    visibility: hidden;
    padding: 0.6rem 0.9rem;
    border: none;
    border-radius: 10px;
    background: var(--c-primary);
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 3px 10px rgba(0,0,0,0.15);
    transition: opacity 0.4s ease, visibility 0.4s ease, transform 0.3s ease;
    z-index: 1000;
}

#toTopBtn.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(-5px);
}

#toTopBtn:hover {
    background: var(--c-primary-dark);
}


/* Mobile: Logo kleiner */
@media (max-width: 600px) {
    .logo-img {
        width: 120px;
        margin-top: 25px;
    }

    header {
        height: 10vh;
        padding: 0 1rem;
    }
}