/* Navigation Header */
.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
    background: transparent;
}

.nav-header.scrolled {
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 clamp(1rem, 4vw, 2rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo img {
    height: 45px;
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link.active::after,
.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--accent);
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    z-index: 1001;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

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

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    z-index: 999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.mobile-link {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.mobile-footer {
    position: absolute;
    bottom: 3rem;
    text-align: center;
}

.mobile-footer p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.mobile-social {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.mobile-social a {
    color: var(--text-muted);
    font-size: 1.25rem;
    transition: var(--transition);
}

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

/* Language Switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 1rem;
}

.lang-btn {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
}

.lang-btn:hover,
.lang-btn.active {
    color: var(--accent);
}

.lang-divider {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.btn-lang {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: var(--transition);
}

.btn-lang:hover,
.btn-lang.active {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
}

@media (max-width: 1024px) {

    .nav-menu,
    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }
}