/**
 * KI-Dresden - Navigation & Breadcrumbs
 */

/* ===== MAIN NAV ===== */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: all 0.3s ease;
}

.main-nav.scrolled,
.main-nav.nav-solid {
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    color: white;
    transition: color 0.3s;
}

.nav-logo span {
    color: var(--color-secondary);
}

.main-nav.scrolled .nav-logo,
.main-nav.nav-solid .nav-logo {
    color: var(--color-primary-dark);
}

/* Desktop Nav */
.nav-menu {
    list-style: none;
    display: flex;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    display: block;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 50px;
    transition: all 0.3s;
}

.nav-menu a:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.nav-menu li.active a {
    background: var(--color-secondary);
    color: var(--color-primary-dark);
    font-weight: 600;
}

.main-nav.scrolled .nav-menu a,
.main-nav.nav-solid .nav-menu a {
    color: var(--color-gray, #4a4a4a);
}

.main-nav.scrolled .nav-menu a:hover,
.main-nav.nav-solid .nav-menu a:hover {
    background: rgba(0, 102, 204, 0.1);
    color: var(--color-primary);
}

.main-nav.scrolled .nav-menu li.active a {
    background: var(--color-primary);
    color: white;
}

/* Hamburger */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: white;
    transition: all 0.3s;
}

.main-nav.scrolled .menu-toggle span {
    background: var(--color-primary-dark);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    flex-direction: column;
    background: white;
    padding: 1rem 2rem 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    display: block;
    padding: 0.75rem 0;
    text-decoration: none;
    color: var(--color-black, #1a1a1a);
    font-weight: 500;
    border-bottom: 1px solid #f0f0f0;
    transition: color 0.3s;
}

.mobile-menu a:last-child {
    border-bottom: none;
}

.mobile-menu a:hover,
.mobile-menu a.active {
    color: var(--color-primary);
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    .menu-toggle {
        display: flex;
    }
}

/* ===== BREADCRUMBS ===== */
.breadcrumbs {
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 80px auto 0;
    font-size: 0.85rem;
}

.breadcrumbs ol {
    list-style: none;
    display: flex;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
}

.breadcrumbs li::after {
    content: "›";
    margin-left: 0.5rem;
    color: #999;
}

.breadcrumbs li:last-child::after {
    content: "";
}

.breadcrumbs a {
    color: var(--color-primary);
    text-decoration: none;
}

.breadcrumbs a:hover {
    text-decoration: underline;
}

.breadcrumbs li:last-child {
    color: #666;
}

/* ===== FOOTER ===== */
.site-footer {
    color: rgba(255, 255, 255, 0.85);
    padding: 4rem 2rem 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
}

@media (max-width: 768px) {
    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
}

.footer-brand span {
    color: var(--color-secondary);
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-col h4 {
    color: white;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--color-secondary);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.footer-contact a:hover {
    color: var(--color-secondary);
}

.footer-contact span {
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom {
    margin-top: 3rem;
    padding: 1.5rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
    margin: 0;
}