/* ============================================================
   NAV.CSS - Navigationsleiste
   ============================================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.nav.is-scrolled {
    border-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp-6);
}

/* === Logo === */
.nav__brand {
    display: flex;
    align-items: center;
    gap: 0;
    font-weight: 800;
    font-size: var(--fs-xl);
    color: var(--teal-800);
    text-decoration: none;
    flex-shrink: 0;
}

.nav__logo-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--r-lg);
    object-fit: contain;
    flex-shrink: 0;
}


/* === Links === */
.nav__links {
    display: flex;
    align-items: center;
    gap: var(--sp-1);
}

.nav__link {
    padding: var(--sp-2) var(--sp-4);
    border-radius: var(--r-md);
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--gray-600);
    transition: color 0.15s ease, background 0.15s ease;
    white-space: nowrap;
}

.nav__link:hover {
    color: var(--teal-700);
    background: var(--teal-50);
}

.nav__link.is-active {
    color: var(--teal-800);
    background: var(--teal-100);
    font-weight: 600;
}

/* === CTA-Bereich === */
.nav__actions {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
}

.nav__login {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--gray-600);
    padding: var(--sp-2) var(--sp-4);
    border-radius: var(--r-md);
    transition: color 0.15s ease;
}

.nav__login:hover {
    color: var(--teal-700);
}

/* === Hamburger (mobil) === */
.nav__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    gap: 5px;
    border-radius: var(--r-md);
    cursor: pointer;
    transition: background 0.15s ease;
}

.nav__toggle:hover {
    background: var(--teal-50);
}

.nav__toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--gray-700);
    border-radius: var(--r-full);
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* === Mobile Drawer === */
.nav__mobile {
    display: none;
    flex-direction: column;
    gap: var(--sp-1);
    padding: var(--sp-4) var(--sp-4) var(--sp-6);
    border-top: 1px solid var(--color-border);
    background: white;
}

.nav__mobile.is-open {
    display: flex;
}

.nav__mobile .nav__link {
    font-size: var(--fs-base);
    padding: var(--sp-3) var(--sp-4);
}

.nav__mobile .nav__actions {
    flex-direction: column;
    align-items: stretch;
    padding-top: var(--sp-4);
    border-top: 1px solid var(--color-border);
    margin-top: var(--sp-2);
}

.nav__mobile .nav__actions .btn {
    width: 100%;
    justify-content: center;
}

/* === Dropdown (Für wen?) === */
.nav__dropdown {
    position: relative;
}

.nav__dropdown__toggle {
    display: flex;
    align-items: center;
    gap: var(--sp-1);
}

.nav__dropdown__toggle svg {
    width: 14px;
    height: 14px;
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.nav__dropdown:hover .nav__dropdown__toggle svg,
.nav__dropdown:focus-within .nav__dropdown__toggle svg {
    transform: rotate(180deg);
}

.nav__dropdown__menu {
    position: absolute;
    top: calc(100% + var(--sp-2));
    left: 50%;
    transform: translateX(-50%) translateY(-6px);
    min-width: 210px;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--r-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--sp-2);
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease, visibility 0.15s ease, transform 0.15s ease;
    z-index: 200;
}

.nav__dropdown:hover .nav__dropdown__menu,
.nav__dropdown:focus-within .nav__dropdown__menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Unsichtbare Brücke über der Lücke - hält Hover beim Überfahren aufrecht */
.nav__dropdown__menu::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    height: calc(var(--sp-2) + 2px);
}

.nav__dropdown__item {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--r-md);
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--gray-700);
    white-space: nowrap;
    transition: background 0.15s ease, color 0.15s ease;
}

.nav__dropdown__item:hover {
    background: var(--teal-50);
    color: var(--teal-700);
}

.nav__dropdown__item.is-active {
    background: var(--teal-100);
    color: var(--teal-800);
    font-weight: 600;
}

.nav__dropdown__item svg {
    width: 18px;
    height: 18px;
    color: var(--teal-500);
    flex-shrink: 0;
}

/* === Responsive === */
@media (max-width: 900px) {
    .nav__links,
    .nav__login {
        display: none;
    }

    .nav__actions > .btn {
        display: none;
    }

    .nav__toggle {
        display: flex;
    }
}