/* ============================================================================
   KCThanhHoa MOBILE MENU V6 - 20/08/2026
   Mục tiêu:
   - Menu mobile gọn, cân đối, dễ bấm trên màn hình 320-860px.
   - Mũi tên submenu đa cấp luôn hiện, không phụ thuộc Font Awesome/icon font.
   - Tên chuyên mục vẫn là link điều hướng; vùng nút bên phải chỉ mở/đóng submenu.
   - Phân cấp cha/con/cháu bằng nền + đường dẫn thị giác, không thụt quá sâu.
   - Chỉ áp dụng <= 860px, tuyệt đối không đổi layout menu desktop.
   ============================================================================ */
@media (max-width: 860px) {
  #mainNavigation {
    position: relative !important;
    z-index: 90 !important;
  }

  #mainNavigation .main-menu-shell {
    gap: 8px !important;
    min-height: 52px !important;
    padding: 6px 8px !important;
  }

  /* Nút hamburger: rõ, gọn, cùng chiều cao với Trang chủ. */
  #mainNavigation .mobile-menu-toggle {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex: 0 0 44px !important;
    width: 44px !important;
    height: 40px !important;
    min-width: 44px !important;
    min-height: 40px !important;
    padding: 0 10px !important;
    border: 1px solid rgba(255,255,255,.30) !important;
    border-radius: 10px !important;
    background: rgba(255,255,255,.12) !important;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.08) !important;
  }

  #mainNavigation .mobile-menu-toggle[aria-expanded="true"] {
    background: rgba(255,255,255,.22) !important;
  }

  #mainNavigation .mobile-menu-toggle-bar {
    display: block !important;
    width: 20px !important;
    height: 2px !important;
    margin: 2.5px 0 !important;
    border-radius: 999px !important;
    background: #fff !important;
  }

  #mainNavigation .menu-home-link {
    min-height: 40px !important;
    height: 40px !important;
    border-radius: 10px !important;
  }

  /* Khung menu sau khi mở. */
  #mainNavigation #primaryMenu {
    flex: 0 0 100% !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: visible !important;
  }

  #mainNavigation #primaryMenu > .menu-root {
    display: block !important;
    width: 100% !important;
    margin: 2px 0 0 !important;
    padding: 5px 0 2px !important;
    list-style: none !important;
  }

  /* Mỗi dòng: phần link co giãn + nút arrow cố định 44px. */
  #mainNavigation #primaryMenu li {
    position: relative !important;
    display: grid !important;
    grid-template-columns: minmax(0,1fr) 44px !important;
    align-items: stretch !important;
    width: 100% !important;
    min-width: 0 !important;
    margin: 0 0 5px !important;
    padding: 0 !important;
    border: 1px solid rgba(255,255,255,.11) !important;
    border-radius: 11px !important;
    background: rgba(255,255,255,.075) !important;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.025) !important;
    overflow: hidden !important;
    list-style: none !important;
  }

  #mainNavigation #primaryMenu li:not(.has-children) {
    grid-template-columns: minmax(0,1fr) !important;
  }

  #mainNavigation #primaryMenu .menu-node-link {
    grid-column: 1 !important;
    grid-row: 1 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    width: 100% !important;
    min-width: 0 !important;
    min-height: 46px !important;
    margin: 0 !important;
    padding: 8px 10px !important;
    border: 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    color: #fff !important;
    text-align: left !important;
    text-decoration: none !important;
  }

  #mainNavigation #primaryMenu .menu-link-inner {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    flex: 1 1 auto !important;
    width: 100% !important;
    min-width: 0 !important;
    gap: 9px !important;
  }

  #mainNavigation #primaryMenu .menu-icon-badge {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex: 0 0 29px !important;
    width: 29px !important;
    height: 29px !important;
    margin: 0 !important;
    border: 1px solid rgba(255,255,255,.09) !important;
    border-radius: 8px !important;
    background: rgba(255,255,255,.11) !important;
    font-size: 12.5px !important;
  }

  #mainNavigation #primaryMenu .menu-label {
    display: block !important;
    flex: 1 1 auto !important;
    min-width: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    color: inherit !important;
    font-family: Arial, "Helvetica Neue", Helvetica, sans-serif !important;
    font-size: 14.5px !important;
    font-weight: 700 !important;
    line-height: 1.32 !important;
    letter-spacing: 0 !important;
    text-align: left !important;
    text-transform: none !important;
    white-space: normal !important;
    overflow-wrap: break-word !important;
  }

  /* ==========================================================
     ARROW SUBMENU - khóa hiển thị cho mọi cấp mobile.
     Không dùng Font Awesome: dựng chevron bằng border CSS.
     ========================================================== */
  #mainNavigation #primaryMenu .menu-submenu-toggle {
    grid-column: 2 !important;
    grid-row: 1 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    align-self: stretch !important;
    visibility: visible !important;
    opacity: 1 !important;
    width: 44px !important;
    min-width: 44px !important;
    max-width: 44px !important;
    height: auto !important;
    min-height: 46px !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    border-left: 1px solid rgba(255,255,255,.14) !important;
    border-radius: 0 !important;
    background: rgba(0,0,0,.10) !important;
    color: #fff !important;
    box-shadow: none !important;
    appearance: none !important;
    -webkit-appearance: none !important;
    cursor: pointer !important;
    overflow: visible !important;
  }

  #mainNavigation #primaryMenu .menu-submenu-toggle:active,
  #mainNavigation #primaryMenu .menu-submenu-toggle[aria-expanded="true"] {
    background: rgba(255,255,255,.12) !important;
  }

  /* Xóa mọi pseudo/icon legacy, chỉ giữ một chevron CSS duy nhất. */
  #mainNavigation #primaryMenu .menu-submenu-toggle::before,
  #mainNavigation #primaryMenu .menu-submenu-toggle::after,
  #mainNavigation #primaryMenu .menu-chevron::before,
  #mainNavigation #primaryMenu .menu-chevron::after {
    content: none !important;
    display: none !important;
  }

  #mainNavigation #primaryMenu .menu-chevron {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative !important;
    width: 9px !important;
    height: 9px !important;
    min-width: 9px !important;
    min-height: 9px !important;
    margin: -4px 0 0 !important;
    padding: 0 !important;
    border: 0 !important;
    border-right: 2px solid #fff !important;
    border-bottom: 2px solid #fff !important;
    border-radius: 1px !important;
    background: transparent !important;
    box-sizing: border-box !important;
    transform: rotate(45deg) !important;
    transform-origin: 60% 60% !important;
    transition: transform .18s ease, margin .18s ease !important;
  }

  #mainNavigation #primaryMenu li.open > .menu-submenu-toggle .menu-chevron,
  #mainNavigation #primaryMenu .menu-submenu-toggle[aria-expanded="true"] .menu-chevron {
    margin: 4px 0 0 !important;
    transform: rotate(225deg) !important;
  }

  /* Submenu: nằm trong flow, có đường dẫn phân cấp bên trái. */
  #mainNavigation #primaryMenu li > .menu-sub {
    grid-column: 1 / -1 !important;
    position: static !important;
    display: none !important;
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    margin: 0 !important;
    padding: 5px 5px 5px 11px !important;
    border: 0 !important;
    border-top: 1px solid rgba(255,255,255,.08) !important;
    border-radius: 0 !important;
    background: rgba(3,18,43,.24) !important;
    box-shadow: inset 3px 0 0 rgba(255,255,255,.10) !important;
    overflow: visible !important;
    list-style: none !important;
  }

  #mainNavigation #primaryMenu li.open > .menu-sub {
    display: block !important;
  }

  #mainNavigation #primaryMenu .menu-sub li {
    margin-bottom: 4px !important;
    border-radius: 9px !important;
    border-color: rgba(255,255,255,.085) !important;
    background: rgba(255,255,255,.045) !important;
  }

  #mainNavigation #primaryMenu .menu-sub .menu-node-link {
    min-height: 42px !important;
    padding: 7px 9px !important;
  }

  #mainNavigation #primaryMenu .menu-sub .menu-label {
    font-size: 13.8px !important;
    font-weight: 600 !important;
    line-height: 1.32 !important;
  }

  #mainNavigation #primaryMenu .menu-sub .menu-icon-badge {
    flex-basis: 26px !important;
    width: 26px !important;
    height: 26px !important;
    border-radius: 7px !important;
    font-size: 11.5px !important;
  }

  #mainNavigation #primaryMenu .menu-sub .menu-submenu-toggle {
    min-height: 42px !important;
  }

  /* Mỗi cấp chỉ thụt nhẹ, tránh màn hình 320px bị bó chữ. */
  #mainNavigation #primaryMenu .menu-level-1 { padding-left: 9px !important; }
  #mainNavigation #primaryMenu .menu-level-2 { padding-left: 12px !important; }
  #mainNavigation #primaryMenu .menu-level-3,
  #mainNavigation #primaryMenu .menu-level-4,
  #mainNavigation #primaryMenu .menu-level-5,
  #mainNavigation #primaryMenu .menu-level-6,
  #mainNavigation #primaryMenu .menu-level-7,
  #mainNavigation #primaryMenu .menu-level-8 { padding-left: 14px !important; }

  #mainNavigation #primaryMenu .menu-node-link:active {
    background: rgba(255,255,255,.08) !important;
  }

  #mainNavigation #primaryMenu a:focus-visible,
  #mainNavigation #primaryMenu button:focus-visible,
  #mainNavigation .mobile-menu-toggle:focus-visible {
    outline: 2px solid rgba(255,255,255,.95) !important;
    outline-offset: -3px !important;
  }
}

/* Điện thoại rất hẹp: giảm nhẹ icon/padding nhưng vẫn giữ nút arrow đủ 42px để dễ bấm. */
@media (max-width: 380px) {
  #mainNavigation #primaryMenu li {
    grid-template-columns: minmax(0,1fr) 42px !important;
  }
  #mainNavigation #primaryMenu .menu-submenu-toggle {
    width: 42px !important;
    min-width: 42px !important;
    max-width: 42px !important;
  }
  #mainNavigation #primaryMenu .menu-node-link {
    padding-left: 8px !important;
    padding-right: 8px !important;
  }
  #mainNavigation #primaryMenu .menu-link-inner {
    gap: 7px !important;
  }
  #mainNavigation #primaryMenu .menu-label {
    font-size: 14px !important;
  }
}