/* ══════════════════════════════════════════════════════════
   Navigation — Navbar, nav links, language switcher
   Shared across all Groteska sites.
   ══════════════════════════════════════════════════════════ */

.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(26, 26, 46, 0.85);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid rgba(59, 130, 196, 0.15);
  z-index: 1000;
  padding: 0 2rem;
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.nav-brand { text-decoration: none; }
.nav-brand svg { height: 28px; width: auto; }

.nav-content {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  position: relative;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-9);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-base);
  padding: var(--space-4) var(--space-5);
  color: var(--sheet);
  cursor: pointer;
  font-size: var(--font-size-lg);
  transition: all 0.2s;
}
.nav-toggle:hover { border-color: rgba(255, 255, 255, 0.3); }

.nav-link {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.4);
  font-family: var(--font-family-mono);
  font-size: 0.72rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.25s var(--ease-standard);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-base);
}
.nav-link:hover { color: rgba(255, 255, 255, 0.8); }
.nav-link.active { color: var(--line-light); }

.nav-lang {
  font-family: var(--font-family-mono);
  font-size: 10px;
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.06em;
  cursor: pointer;
  background: none;
  border: 1px solid rgba(59, 130, 196, 0.18);
  border-radius: 2px;
  padding: 4px 12px;
  transition: all 0.3s var(--ease-standard);
}
.nav-lang:hover {
  color: rgba(255, 255, 255, 0.8);
  border-color: rgba(59, 130, 196, 0.4);
  background: rgba(59, 130, 196, 0.08);
}

/* ── Focus ── */
.nav-lang:focus-visible,
.nav-toggle:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-menu { display: none; }
  .nav-toggle { display: block; }

  .nav-menu.open {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    position: fixed;
    top: 56px;
    right: var(--space-8);
    left: var(--space-8);
    background: rgba(46, 46, 66, 0.95);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(59, 130, 196, 0.2);
    border-radius: var(--radius-md);
    padding: var(--space-7);
    z-index: 1100;
  }
  .nav-menu.open .nav-link { display: block; width: 100%; }
}

@media (max-width: 480px) {
  .navbar { padding: 0 1rem; }
  .navbar .container { height: 48px; }
  .nav-content { gap: var(--space-5); }
}

/* ── Print ── */
@media print {
  .navbar { display: none; }
}