/* ============================================================
   Mobile bottom navigation (Digikala-style)
   ============================================================ */
:root {
  --mobile-nav-height: 3.55rem;
}

@media (max-width: 991.98px) {
  body {
    padding-bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom, 0px));
  }

  body.cart-drawer-open,
  body.auth-modal-open {
    padding-bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom, 0px));
  }

  .mobile-bottom-nav {
    position: fixed;
    right: 0;
    left: 0;
    bottom: 0;
    z-index: 1040;
    display: flex;
    align-items: stretch;
    justify-content: space-around;
    gap: 0;
    height: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: rgba(255, 255, 255, .97);
    border-top: 1px solid var(--border);
    box-shadow: 0 -4px 24px rgba(15, 23, 42, .08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  .mobile-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .18rem;
    min-width: 0;
    padding: .35rem .25rem .45rem;
    border: none;
    background: transparent;
    color: #9ca3af;
    text-decoration: none;
    font-family: inherit;
    cursor: pointer;
    transition: color .15s ease;
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-nav-item:hover,
  .mobile-nav-item:focus-visible {
    color: var(--dark);
    outline: none;
  }

  .mobile-nav-item.is-active {
    color: var(--dark);
  }

  .mobile-nav-icon {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.65rem;
    height: 1.65rem;
    font-size: 1.2rem;
    line-height: 1;
  }

  .mobile-nav-label {
    font-size: .62rem;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    letter-spacing: -.01em;
  }

  .mobile-nav-item.is-active .mobile-nav-label {
    font-weight: 800;
  }

  .mobile-nav-badge {
    position: absolute;
    top: -.3rem;
    left: -.45rem;
    min-width: 1rem;
    height: 1rem;
    padding: 0 .28rem;
    border-radius: 999px;
    background: #ef4444;
    color: #fff;
    font-size: .58rem;
    font-weight: 800;
    line-height: 1rem;
    text-align: center;
    border: 1.5px solid #fff;
    box-shadow: 0 1px 4px rgba(239, 68, 68, .35);
  }

  .mobile-nav-badge.is-empty {
    display: none;
  }

  /* Simplified mobile header — logo + search only */
  .site-header-mobile-bar {
    justify-content: center;
    padding: .5rem 1rem .35rem;
  }

  .site-header-logo--mobile {
    flex: none;
  }

  /* Cart drawer above bottom nav */
  .cart-drawer {
    bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom, 0px) + .5rem);
    max-height: min(360px, calc(100vh - var(--mobile-nav-height) - env(safe-area-inset-bottom, 0px) - 2rem));
  }

  .cart-drawer-panel {
    max-height: min(360px, calc(100vh - var(--mobile-nav-height) - env(safe-area-inset-bottom, 0px) - 2rem));
  }

  .cart-toast {
    bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom, 0px) + .75rem);
  }

  /* Sticky buy bar on PDP */
  .sticky-buy-bar {
    bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom, 0px));
  }

  @supports selector(:has(*)) {
    body:has(.sticky-buy-bar.is-visible) {
      padding-bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom, 0px) + 3.5rem);
    }
  }

  /* Footer breathing room */
  .site-footer {
    margin-bottom: 0;
  }

  .footer-bottom {
    padding-bottom: max(.75rem, env(safe-area-inset-bottom)) !important;
  }
}

@media (max-width: 380px) {
  .mobile-nav-label { font-size: .58rem; }
  .mobile-nav-icon { font-size: 1.1rem; }
}