/* Сквозная навигация — подключается на всех страницах */

.site-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--bg-color, #050505);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem 2rem;
    flex-wrap: wrap;
    padding: 1.25rem 0;
    margin-bottom: 3.5rem;
    border-bottom: 1px solid #171717;
}

.site-nav a {
    text-decoration: none;
}

.site-nav-brand {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #ffffff;
    transition: opacity 0.3s ease;
}

.site-nav-brand:hover { opacity: 0.6; }

.site-nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.75rem;
}

.site-nav-links a {
    position: relative;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: #737373;
    padding-bottom: 4px;
    transition: color 0.3s ease;
}

.site-nav-links a:hover { color: #ffffff; }

.site-nav-links a.active { color: #ffffff; }

.site-nav-links a.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: #ffffff;
}

.language-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    margin-left: 0.25rem;
    padding: 0.35rem 0.55rem;
    border: 1px solid #292929;
    border-radius: 999px;
    background: transparent;
    color: #737373;
    font: inherit;
    font-size: 10px;
    letter-spacing: 0.12em;
    cursor: pointer;
    transition: border-color 0.3s ease, color 0.3s ease;
}

.language-toggle:hover, .language-toggle:focus-visible { border-color: #737373; color: #ffffff; outline: none; }
.language-toggle-track { position: relative; width: 1.8rem; height: 0.9rem; border: 1px solid currentColor; border-radius: 999px; }
.language-toggle-track::after { content: ""; position: absolute; top: 0.12rem; left: 0.14rem; width: 0.55rem; height: 0.55rem; border-radius: 50%; background: currentColor; transition: transform 0.25s ease; }
html[data-language="en"] .language-toggle-track::after { transform: translateX(0.82rem); }

@media (max-width: 640px) {
    .site-nav {
        justify-content: flex-start;
        gap: 1rem;
    }
    .site-nav-links { gap: 1.15rem; }
    .site-nav-links a { font-size: 10px; letter-spacing: 0.1em; }
}