:root {
  --mobile-nav-height: 4.35rem;
}

/* Navigation application réservée aux écrans mobiles/tablettes étroites. */
.mobile-app-nav {
  display: none;
}

@media (max-width: 991.98px) {
  body:has(.mobile-app-nav) {
    padding-bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + .75rem);
  }

  .mobile-app-nav {
    position: fixed;
    left: .65rem;
    right: .65rem;
    bottom: max(.55rem, env(safe-area-inset-bottom));
    z-index: 1060;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    min-height: var(--mobile-nav-height);
    padding: .35rem;
    background: rgba(255, 255, 255, .96);
    border: 1px solid rgba(102, 67, 21, .16);
    border-radius: 1.15rem;
    box-shadow: 0 .5rem 1.6rem rgba(0, 0, 0, .16);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }

  .mobile-app-nav__item {
    min-width: 0;
    min-height: 3.55rem;
    padding: .35rem .2rem;
    border-radius: .85rem;
    color: #5d6268;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .12rem;
    font-size: .69rem;
    font-weight: 600;
    line-height: 1.05;
    transition: color .16s ease, background-color .16s ease, transform .16s ease;
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-app-nav__item i {
    font-size: 1.25rem;
    line-height: 1;
  }

  .mobile-app-nav__item span {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mobile-app-nav__item:hover,
  .mobile-app-nav__item:focus-visible {
    color: #664315;
    background: rgba(102, 67, 21, .07);
  }

  .mobile-app-nav__item.is-active {
    color: #664315;
    background: rgba(102, 67, 21, .12);
  }

  .mobile-app-nav__item.is-active i {
    transform: translateY(-1px);
  }

  /* Le bouton d'installation PWA reste au-dessus de la navigation. */
  .pwa-install-button {
    bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + 1rem);
  }

  /* Le bandeau cookies reste lui aussi accessible au-dessus de la barre. */
  body:has(.mobile-app-nav) > .alert.position-fixed.bottom-0 {
    bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + .75rem) !important;
  }
}

@media (max-width: 380px) {
  .mobile-app-nav {
    left: .35rem;
    right: .35rem;
  }

  .mobile-app-nav__item {
    font-size: .64rem;
  }

  .mobile-app-nav__item i {
    font-size: 1.15rem;
  }
}

@media (display-mode: standalone) and (max-width: 991.98px) {
  .mobile-app-nav {
    bottom: max(.35rem, env(safe-area-inset-bottom));
  }
}