/* ===== Shared Navigation ===== */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 14px 32px;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}
nav .nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
nav .logo {
    font-family: 'Inter', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

/* Row 1: lang select */
.nav-lang-row {
    display: flex;
    align-items: center;
    gap: 6px;
}
.lang-icon { font-size: 1.1rem; }
.lang-select {
    background: rgba(255,255,255,0.08);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
}
.lang-select:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

/* Row 2: page links */
.nav-sub {
    border-top: 1px solid var(--border);
}
.nav-sub-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 6px 32px;
}
.nav-sub a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.82rem;
    white-space: nowrap;
    transition: color 0.2s;
}
.nav-sub a:hover { color: var(--text-primary); }
.nav-sub a.active { color: var(--accent); font-weight: 600; }

/* Mobile */
@media (max-width: 900px) {
    nav { padding: 10px 16px; }
    .lang-select { font-size: 0.78rem; padding: 4px 8px; }
}
@media (max-width: 600px) {
    nav { padding: 8px 12px; }
    .nav-sub-inner { padding: 6px 12px; gap: 12px; }
    .nav-sub a { font-size: 0.75rem; }
    .lang-select { font-size: 0.75rem; padding: 4px 6px; }
}