.app-navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: saturate(120%) blur(6px);
}

.app-navbar .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text);
  text-decoration: none;
}

.nav-logo {
  width: 24px;
  height: 24px;
  border-radius: 4px;
}

.brand-title {
  font-weight: 700;
  letter-spacing: 0.2px;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0.4rem 0.5rem;
  color: var(--color-text);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px 0;
  background: var(--color-text);
  border-radius: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  color: var(--color-text);
  text-decoration: none;
  border-radius: 8px;
  transition: background-color 120ms ease, color 120ms ease, opacity 120ms ease;
  opacity: 0.92;
  margin-left: 0.35rem;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  outline: none;
  opacity: 1;
}

.nav-link.is-active {
  background: rgba(255, 255, 255, 0.12);
  font-weight: 600;
  opacity: 1;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav-menu {
    display: none;
  }

  .nav-menu.open {
    display: grid;
    gap: 0.75rem;
    width: 100%;
    padding-top: 0.75rem;
  }

  .nav-links {
    display: grid;
    gap: 0.25rem;
    justify-items: start;
  }

  .nav-actions {
    justify-content: flex-start;
  }
}

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 16px;
  line-height: 1;
  background: rgba(255, 255, 255, 0.08);
  color: inherit;
  transition: transform 140ms ease, background-color 140ms ease, color 140ms ease;
}

.social-icon:hover,
.social-icon:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.social-icon--mastodon:hover,
.social-icon--mastodon:focus-visible {
  background: var(--color-social-mastodon);
  color: var(--color-primary-contrast);
}

.social-icon--github:hover,
.social-icon--github:focus-visible {
  background: var(--color-social-github);
  color: var(--color-primary-contrast);
}

.social-icon--discord:hover,
.social-icon--discord:focus-visible {
  background: var(--color-social-discord);
  color: var(--color-primary-contrast);
}

.social-icon--linkedin:hover,
.social-icon--linkedin:focus-visible {
  background: var(--color-social-linkedin);
  color: var(--color-primary-contrast);
}

.social-nav {
  margin-top: var(--space-5);
  margin-bottom: var(--space-7);
  display: flex;
  justify-content: center;
}

.social-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: inline-flex;
  gap: var(--space-3);
}

.social-links li {
  display: inline-flex;
}

.app-navbar .nav-inner,
.footer-nav {
  padding-inline: calc(var(--space-5) + env(safe-area-inset-left))
    calc(var(--space-5) + env(safe-area-inset-right));
}

@supports not (padding-inline: env(safe-area-inset-left)) {
  .app-navbar .nav-inner,
  .footer-nav {
    padding-inline: var(--space-5);
  }
}

@media (max-width: 480px) {
  .nav-links {
    gap: 0;
  }

  .nav-link {
    padding: 0.45rem 0.6rem;
  }

  .brand-title {
    display: none;
  }
}

@media (max-height: 420px) and (orientation: landscape) {
  .app-navbar .nav-inner {
    padding-block: 0.35rem;
  }
}

@media print {
  .app-navbar,
  .site-footer {
    display: none !important;
  }
}

@media (max-width: 768px) {
  .nav-links {
    gap: var(--space-2);
  }

  .nav-link {
    padding: 0.6rem 0.8rem;
  }
}

.skip-link { position: absolute; top: -1000px; left: -1000px; }

.skip-link:focus {
  top: 8px;
  left: 8px;
  background: var(--color-surface);
  color: var(--color-text);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-1);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--color-link-hover);
  text-decoration: underline;
  outline: none;
}

.site-footer {
  width: 100%;
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  background: color-mix(in hsl, var(--color-surface) 88%, var(--color-bg));
}

.footer-nav {
  max-width: var(--max-content-width);
  margin-inline: auto;
  padding: var(--space-5);
}

.footer-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-3) 0;
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-link {
  color: var(--color-link);
  text-decoration: none;
  font-weight: 700;
}