/* ==========================================================
   Geotrend GmbH - Navigation
   Header, Mobile Menu, Footer
   ========================================================== */

/* -- Header -- */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    /* Deckend, kein blur: hinter einer opaken Leiste gibt es nichts zu blurren. */
    background-color: var(--color-nav-bg);
    border-bottom: 1px solid var(--color-border-light);
    z-index: var(--z-sticky);
    transition: background-color var(--transition-base);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-24);
}

.header__logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.header__logo svg {
    height: 24px;
    width: auto;
    overflow: visible; /* der Schriftzug endet exakt an der viewBox-Kante; sonst wird das "D" beschnitten */
}

/* Logo-Farben an Theme anpassen */
/* cls-2 = Schriftzug "GEOTREND" */
.header__logo svg .cls-2,
.footer__logo svg .cls-2 {
    fill: var(--color-text);
}

/* cls-3 = Rote Kreuz-Streifen (immer Geotrend-Rot) */
.header__logo svg .cls-3,
.footer__logo svg .cls-3 {
    fill: #cd161a;
}

/* cls-1 = Stern-Overlay (immer weiss, erzeugt den Ausschnitt im roten Symbol) */
.header__logo svg .cls-1,
.footer__logo svg .cls-1 {
    fill: #fff;
}

/* -- Desktop Navigation -- */

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.nav__link {
    display: flex;
    align-items: center;
    padding: var(--space-8) var(--space-14);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-regular);
    color: var(--color-text-secondary);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-text);
    background-color: var(--color-bg-secondary);
}

/* Eine Stufe kraeftiger als :hover - sonst sieht die aktive Seite genauso aus
   wie der Link, ueber dem gerade die Maus steht. */
.nav__link--active {
    font-weight: var(--font-weight-medium);
    background-color: var(--color-bg-tertiary);
}

/* -- Dropdown -- */

.nav__dropdown {
    position: relative;
}

.nav__dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    padding: var(--space-8) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

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

.nav__dropdown-link {
    display: block;
    padding: var(--space-10) var(--space-16);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.nav__dropdown-link:hover {
    color: var(--color-text);
    background-color: var(--color-bg-secondary);
}

/* Dropdown arrow */
.nav__dropdown > .nav__link::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: var(--space-6);
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    transition: transform var(--transition-fast);
}

.nav__dropdown:hover > .nav__link::after {
    transform: rotate(180deg);
}

/* -- Header Actions (Theme, Language) -- */

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.header__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
    background: none;
    border: none;
}

.header__toggle:hover {
    color: var(--color-text);
    background-color: var(--color-bg-secondary);
}

.lang-toggle {
    width: auto;
    padding: 0 var(--space-10);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* -- Mobile Menu Button -- */

.header__burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: 8px;
    cursor: pointer;
    background: none;
    border: none;
}

.header__burger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 1px;
    transition: all var(--transition-fast);
}

/* Burger to X animation */
.header__burger--open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.header__burger--open span:nth-child(2) {
    opacity: 0;
}

.header__burger--open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* -- Mobile Navigation -- */

.mobile-nav {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg);
    padding: var(--space-24);
    overflow-y: auto;
    z-index: var(--z-overlay);
}

.mobile-nav--open {
    display: block;
}

.mobile-nav__link {
    display: block;
    padding: var(--space-14) 0;
    font-size: var(--font-size-lg);
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-light);
    text-decoration: none;
}

.mobile-nav__link:hover {
    color: var(--color-accent);
}

/* Kein Hintergrund-Chip wie im Desktop-Menue: die Zeilen sind hier volle Breite. */
.mobile-nav__link--active {
    color: var(--color-accent);
    font-weight: var(--font-weight-medium);
}

.mobile-nav__sub {
    padding-left: var(--space-24);
}

.mobile-nav__sub .mobile-nav__link {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

/* -- Footer -- */

.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border-light);
    padding: var(--space-64) 0 var(--space-32);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr; /* TEMP: 4 Spalten (Logo, Leistungen, Unternehmen, Kontakt), da "Solutions"/Branchen bis zum Launch ausgeblendet ist - bei Reaktivierung "2fr 1fr 1fr 1fr 1fr" */
    gap: var(--space-48);
    margin-bottom: var(--space-48);
}

.footer__logo {
    margin-bottom: var(--space-16);
}

.footer__logo svg {
    height: 20px;
    width: auto;
    overflow: visible; /* der Schriftzug endet exakt an der viewBox-Kante; sonst wird das "D" beschnitten */
}

.footer__about {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    max-width: 280px;
}

/* Social-Icon unter dem Claim (eigene Zeile, da <a> nach dem <p> steht) */
.footer__social {
    display: inline-flex;
    margin-top: var(--space-16);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer__social:hover {
    color: var(--color-accent);
}

.footer__title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-16);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-10);
}

.footer__link {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-accent);
}

.footer__bottom {
    border-top: 1px solid var(--color-border-light);
    padding-top: var(--space-24);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer__copyright {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.footer__legal {
    display: flex;
    gap: var(--space-24);
}

.footer__legal a {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-decoration: none;
}

.footer__legal a:hover {
    color: var(--color-accent);
}

/* -- Responsive Navigation -- */

@media (max-width: 860px) {
    .nav {
        display: none;
    }

    .header__burger {
        display: flex;
    }

    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-32);
    }
}

@media (max-width: 768px) {
    .header__inner {
        padding: 0 var(--space-16);
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-24);
    }

    .footer__bottom {
        flex-direction: column;
        gap: var(--space-16);
        text-align: center;
    }
}