/**
 * Narrow header (issue #75).
 * Below 480px the signed-in theme control lives in the account menu.
 * The logo is the flex item that shrinks first so it cannot cover the toggle,
 * menu button, or avatar. Desktop (wider than 480px) is unchanged.
 */

@media (max-width: 480px) {
  .topbar .container-fluid > .row {
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.5rem;
    min-width: 0;
  }

  .topbar .topbar-leading,
  .topbar .topbar-trailing,
  .topbar .logo-container {
    width: auto;
    max-width: none;
    padding-left: 0;
    padding-right: 0;
    margin-top: 0;
  }

  .topbar .topbar-leading,
  .topbar .topbar-trailing {
    flex: 0 0 auto;
  }

  .topbar .logo-container {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    justify-content: center;
  }

  .topbar .logo-container a {
    display: flex;
    min-width: 0;
    max-width: 100%;
    text-decoration: none;
    color: inherit;
  }

  .topbar .logo-container a:hover,
  .topbar .logo-container a:focus {
    text-decoration: none;
  }

  .topbar .logo-container a:focus {
    outline: none;
  }

  .topbar .logo-container a:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
    border-radius: 4px;
  }

  .topbar .logo-container .staqc-logo {
    min-width: 0;
    max-width: 100%;
  }

  .topbar .logo-container .logo-icon {
    flex: 0 0 auto;
  }

  .topbar .logo-container .logo-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
  }

  .topbar .sidebar-toggle-btn {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    /* .btn-dark paints a near-black fill; a dark icon on that fill fails 3:1 in light mode. */
    background-color: var(--topbar-bg);
    border: 0;
    color: var(--topbar-fg-hover);
    font-size: 1.25rem;
    line-height: 1;
  }

  .topbar .sidebar-toggle-btn:hover,
  .topbar .sidebar-toggle-btn:focus {
    color: var(--topbar-fg-hover);
    background-color: var(--topbar-bg);
  }

  .topbar .sidebar-toggle-btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
  }

  .topbar .theme-toggle--bar {
    display: none;
  }

  .topbar .topbar-auth {
    gap: 0.35rem;
    min-width: 0;
  }

  .topbar .topbar-auth .theme-toggle {
    margin: 0;
    flex: 0 0 auto;
  }

  .topbar .topbar-auth .btn {
    min-height: 44px;
    padding: 0.4rem 0.65rem;
    white-space: nowrap;
  }

  .topbar .topbar-auth .nav-signup {
    margin-left: 0 !important;
  }

  .main-nav .nav-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 0;
    padding-left: 1rem;
    padding-right: 1rem;
    box-sizing: border-box;
  }

  .main-nav .logo {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
  }

  .main-nav .logo a {
    display: flex;
    min-width: 0;
    max-width: 100%;
  }

  .main-nav .logo .staqc-logo {
    min-width: 0;
    max-width: 100%;
  }

  .main-nav .logo .logo-icon {
    flex: 0 0 auto;
  }

  .main-nav .nav-trailing > .theme-toggle {
    display: none;
  }

  .main-nav .logo,
  .main-nav .logo a,
  .main-nav .logo .staqc-logo {
    overflow: visible;
    min-width: min-content;
    max-width: none;
    flex: 0 0 auto;
  }

  .main-nav .logo .logo-text {
    overflow: visible;
    text-overflow: clip;
    white-space: nowrap;
    flex-shrink: 0;
    min-width: auto;
  }

  .main-nav .nav-signup {
    min-width: 44px;
    min-height: 44px;
    box-sizing: border-box;
  }

  .main-nav .nav-trailing {
    flex: 0 0 auto;
    margin-left: 0;
    gap: 0.5rem;
  }

  .main-nav .theme-toggle,
  .main-nav .mobile-menu-toggle {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    flex: 0 0 auto;
  }

  .main-nav .mobile-menu-toggle {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    overflow: visible;
  }

  /* Three bars about 22px wide, grouped in the middle of the 44px target. */
  .main-nav .mobile-menu-toggle .bar {
    width: 22px;
    height: 2px;
    left: 11px;
    right: auto;
  }

  .main-nav .mobile-menu-toggle .bar1 {
    top: 15px;
  }

  .main-nav .mobile-menu-toggle .bar2 {
    top: 21px;
    transform: none;
  }

  .main-nav .mobile-menu-toggle .bar3 {
    top: 27px;
    bottom: auto;
  }

  .main-nav .mobile-menu-toggle.active .bar1 {
    top: 21px;
    transform: translateY(-50%) rotate(45deg);
  }

  .main-nav .mobile-menu-toggle.active .bar2 {
    opacity: 0;
  }

  .main-nav .mobile-menu-toggle.active .bar3 {
    top: 21px;
    bottom: auto;
    transform: translateY(-50%) rotate(-45deg);
  }

  .main-nav .mobile-menu-toggle:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
    border-radius: 4px;
  }
}

.mobile-nav-menu .theme-menu-toggle {
  display: none;
  width: 100%;
  min-height: 44px;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 0;
  color: var(--text-primary);
  font-size: 1.1rem;
  text-align: left;
  cursor: pointer;
  padding: 1rem 0;
}

@media (max-width: 767px) {
  .mobile-nav-menu .theme-menu-toggle {
    display: flex;
  }
}

.theme-menu-item {
  display: none;
}

@media (max-width: 480px) {
  .theme-menu-item {
    display: list-item;
  }
}

.topbar .theme-menu-toggle {
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 0;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  touch-action: manipulation;
}

.topbar .theme-menu-toggle:hover {
  background: var(--card-hover-bg);
  color: var(--text-primary);
}

.topbar .theme-menu-toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}