.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-nav-bg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: var(--shadow-md);
}

.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: var(--space-4);
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: var(--color-nav-text);
    white-space: nowrap;
    flex-shrink: 0;
}

.nav__logo-mark {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.nav__brand {
    font-size: var(--text-sm);
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--color-nav-text);
}

.nav__brand span {
    color: var(--color-primary);
}

.nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
}

.nav__links a {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-nav-muted);
    text-decoration: none;
}

.nav__links a:hover,
.nav__links a.active {
    color: var(--color-nav-text);
}

.nav__cta {
    background: var(--color-primary);
    color: var(--color-text-inverse) !important;
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-full);
    font-weight: 600 !important;
}

.nav__cta:hover {
    background: var(--color-primary-hover) !important;
    color: #fff !important;
}

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

.theme-toggle {
    color: var(--color-nav-muted);
    padding: var(--space-2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
}

.theme-toggle:hover {
    color: var(--color-nav-text);
    background: rgba(255, 255, 255, 0.06);
}

.nav__hamburger {
    display: none;
    color: var(--color-nav-text);
    padding: var(--space-2);
}

@media (max-width: 860px) {
    .nav__links {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-nav-bg);
        padding: var(--space-6);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .nav__links.open {
        display: flex;
    }

    .nav__hamburger {
        display: flex;
    }

    .nav__cta {
        display: none;
    }
}

.lang-switcher {
    position: relative;
}

.lang-switcher__btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-nav-text);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.lang-switcher__btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-nav-text);
}

.lang-switcher__arrow {
    transition: transform var(--transition);
    flex-shrink: 0;
}

.lang-switcher__btn[aria-expanded="true"] .lang-switcher__arrow {
    transform: rotate(180deg);
}

.lang-switcher__flag {
    font-size: 1rem;
    line-height: 1;
}

.lang-switcher__dropdown {
    display: none;
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    min-width: 148px;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    list-style: none;
    padding: var(--space-2);
    z-index: 200;
    overflow: hidden;
}

.lang-switcher__dropdown.open {
    display: block;
}

.lang-option {
    width: 100%;
    text-align: left;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-nav-muted);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    background: none;
    border: none;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.lang-option:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-nav-text);
}

.lang-option.active {
    color: var(--color-primary);
    font-weight: 700;
}

.social-switcher {
    position: relative;
}

.social-switcher-btn {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    color: var(--color-nav-muted);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.social-switcher-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-nav-text);
}

.social-switcher-arrow {
    transition: transform var(--transition);
    flex-shrink: 0;
}

.social-switcher-btn[aria-expanded="true"] .social-switcher-arrow {
    transform: rotate(180deg);
}

.social-switcher-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    min-width: 148px;
    background: var(--color-surface-2, #1e242b);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    list-style: none;
    padding: var(--space-2);
    z-index: 200;
    overflow: hidden;
}

.social-switcher-dropdown.open {
    display: block;
}

.social-option {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-nav-muted);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
}

.social-option:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-nav-text);
}