.nav-right {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.mobile-nav-panel {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.nav-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-width: 44px;
  min-height: 44px;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
}

.nav-menu-toggle:hover {
  border-color: var(--ink-faint);
}

.nav-menu-toggle:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent);
  outline-offset: 2px;
}

.nav-menu-icon {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 18px;
}

.nav-menu-icon span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.nav-menu-toggle[aria-expanded="true"] .nav-menu-icon span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.nav-menu-toggle[aria-expanded="true"] .nav-menu-icon span:nth-child(2) {
  opacity: 0;
}

.nav-menu-toggle[aria-expanded="true"] .nav-menu-icon span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

@media (max-width: 720px) {
  nav.top.has-mobile-menu {
    flex-wrap: nowrap;
    padding: 0.85rem max(1rem, env(safe-area-inset-right)) 0.85rem max(1rem, env(safe-area-inset-left));
  }

  nav.top.has-mobile-menu .nav-right {
    margin-inline-start: auto;
    gap: 0;
  }

  .nav-menu-toggle {
    display: inline-flex;
  }

  nav.top.has-mobile-menu .mobile-nav-panel {
    position: absolute;
    top: 100%;
    inset-inline: 0;
    z-index: 101;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: calc(100vh - 72px);
    max-height: calc(100dvh - 72px);
    padding: 0.35rem max(1rem, env(safe-area-inset-right)) 1rem max(1rem, env(safe-area-inset-left));
    overflow-y: auto;
    overscroll-behavior: contain;
    background: var(--surface);
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    box-shadow: 0 16px 32px color-mix(in srgb, var(--ink) 14%, transparent);
  }

  nav.top.has-mobile-menu .nav-right.is-open .mobile-nav-panel {
    display: flex;
  }

  nav.top.has-mobile-menu .mobile-nav-panel .nav-links {
    display: flex;
    flex-direction: column;
    gap: 0;
    width: 100%;
  }

  nav.top.has-mobile-menu .nav-links a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--rule);
  }

  nav.top.has-mobile-menu .lang-switch {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0.35rem;
    padding-top: 0.8rem;
  }

  nav.top.has-mobile-menu .lang-btn {
    min-width: 44px;
    min-height: 44px;
  }

  footer .foot-links {
    flex-wrap: wrap;
    max-width: 100%;
    gap: 0.75rem 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-menu-icon span {
    transition: none;
  }
}

@media (max-width: 360px) {
  nav.top.has-mobile-menu .brand-primary {
    font-size: 1.45rem;
  }

  nav.top.has-mobile-menu .frontier-mark {
    font-size: 0.78rem;
    white-space: nowrap;
  }

  nav.top.has-mobile-menu .nav-menu-toggle {
    gap: 0.45rem;
    padding-inline: 0.6rem;
    font-size: 0.8rem;
  }
}