/* ==========================================================================
   TFST Clean Theme - Navigation Submenu & Mega-Menu Restoration
   Parity with Staging & Luxury Brand System (#1A1A1A, 12px border-radius)
   ========================================================================== */

@media (min-width: 71.9375rem) {
  /* Submenu Dropdown Container */
  .tfst-nav > .tfst-primary-menu > li > ul.sub-menu {
    position: absolute;
    top: calc(100% + .75rem);
    z-index: 1010;
    display: grid;
    gap: 1.15rem;
    margin: 0;
    padding: clamp(1.1rem, 2vw, 1.6rem);
    border: 1px solid rgba(250, 250, 250, .16);
    border-radius: 12px;
    background: #1A1A1A;
    box-shadow: 0 16px 36px rgba(0, 0, 0, .45);
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .2s ease, visibility .2s ease, transform .2s ease;
    pointer-events: none;
  }

  /* Upward Triangle Caret */
  .tfst-nav > .tfst-primary-menu > li > ul.sub-menu::before {
    content: '';
    position: absolute;
    top: -8px;
    width: 0;
    height: 0;
    border-bottom: 8px solid #1A1A1A;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    pointer-events: none;
  }

  .tfst-nav > .tfst-primary-menu > li.tfst-menu-how > ul.sub-menu::before {
    left: 3.5rem;
  }

  .tfst-nav > .tfst-primary-menu > li.tfst-menu-resources > ul.sub-menu::before {
    right: 3.5rem;
    left: auto;
  }

  /* Hover, Focus-Within, and Interactive Toggle Visibility */
  .tfst-nav > .tfst-primary-menu > li:hover > ul.sub-menu,
  .tfst-nav > .tfst-primary-menu > li:focus-within > ul.sub-menu,
  .tfst-nav > .tfst-primary-menu > li[data-submenu-open="true"] > ul.sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  /* Two-column layout for 'How I can help' mega-menu */
  .tfst-nav > .tfst-primary-menu > li.tfst-menu-how > ul.sub-menu {
    left: 0;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-rows: min-content 1fr;
    align-content: start;
    width: min(42rem, calc(100vw - 2rem));
  }

  .tfst-nav > .tfst-primary-menu > li.tfst-menu-how > ul.sub-menu > li:first-child,
  .tfst-nav > .tfst-primary-menu > li.tfst-menu-how > ul.sub-menu > li.menu-item-3014,
  .tfst-nav > .tfst-primary-menu > li.tfst-menu-how > ul.sub-menu > li.menu-item-3059 {
    grid-column: 1;
    grid-row: 1;
  }

  .tfst-nav > .tfst-primary-menu > li.tfst-menu-how > ul.sub-menu > li.tfst-nav-group-ways-of-working {
    grid-column: 1;
    grid-row: 2;
  }

  .tfst-nav > .tfst-primary-menu > li.tfst-menu-how > ul.sub-menu > li.tfst-nav-group-sexual-concerns {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  /* Single-column layout for 'Resources' */
  .tfst-nav > .tfst-primary-menu > li.tfst-menu-resources > ul.sub-menu {
    right: 0;
    left: auto;
    grid-template-columns: minmax(0, 1fr);
    width: min(23rem, calc(100vw - 2rem));
    gap: .5rem;
  }

  /* Submenu Items Styling */
  .tfst-nav > .tfst-primary-menu > li > ul.sub-menu > li {
    min-width: 0;
  }

  .tfst-nav > .tfst-primary-menu > li > ul.sub-menu > li > a {
    display: flex;
    min-height: 2.75rem;
    align-items: center;
    padding: .55rem .65rem;
    border-radius: .25rem;
    color: var(--tfst-white, #FAFAFA);
    font-size: .9rem;
    line-height: 1.35;
    text-decoration: none;
    white-space: normal;
    transition: background-color .15s ease, color .15s ease;
  }

  .tfst-nav > .tfst-primary-menu > li > ul.sub-menu > li > a:hover,
  .tfst-nav > .tfst-primary-menu > li > ul.sub-menu > li > a:focus-visible,
  .tfst-nav > .tfst-primary-menu > li > ul.sub-menu > li.current-menu-item > a {
    color: var(--tfst-white, #FAFAFA);
    background: var(--tfst-plum, #7A5160);
  }

  /* Group Headings inside Submenu */
  .tfst-nav .tfst-nav-group-title {
    display: block;
    padding: .25rem .65rem .55rem;
    color: var(--tfst-champagne, #C6A48F);
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .07em;
    line-height: 1.3;
    text-transform: uppercase;
  }

  .tfst-nav .tfst-nav-group-heading > .sub-menu {
    position: static;
    display: grid;
    gap: .15rem;
    width: auto;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .tfst-nav .tfst-nav-group-heading > .sub-menu::before {
    display: none;
  }

  .tfst-nav .tfst-nav-group-heading > .sub-menu a {
    display: flex;
    min-height: 2.75rem;
    align-items: center;
    padding: .55rem .65rem;
    border-radius: .25rem;
    color: var(--tfst-white, #FAFAFA);
    font-size: .9rem;
    font-weight: 600;
    line-height: 1.35;
    text-decoration: none;
    white-space: normal;
    transition: background-color .15s ease, color .15s ease;
  }

  .tfst-nav .tfst-nav-group-heading > .sub-menu a:hover,
  .tfst-nav .tfst-nav-group-heading > .sub-menu a:focus-visible,
  .tfst-nav .tfst-nav-group-heading > .sub-menu .current-menu-item > a {
    color: var(--tfst-white, #FAFAFA);
    background: var(--tfst-plum, #7A5160);
  }
}

/* Mobile Viewport Submenu Accordion */
@media (max-width: 71.9375rem) {
  .tfst-navigation-panel .tfst-nav > .tfst-primary-menu > li > ul.sub-menu {
    position: static;
    order: 3;
    flex: 0 0 100%;
    width: 100%;
    margin: .2rem 0 .55rem;
    padding: .55rem 0 .55rem .85rem;
    border: 0;
    border-left: 1px solid rgba(250, 250, 250, .22);
    border-radius: 0;
    background: transparent;
    list-style: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
    display: none;
  }

  .tfst-navigation-panel .tfst-nav > .tfst-primary-menu > li > ul.sub-menu::before {
    display: none;
  }

  .tfst-nav-enhanced > .tfst-primary-menu > li[data-submenu-open="true"] > ul.sub-menu {
    display: grid;
  }

  .tfst-nav:not(.tfst-nav-enhanced) > .tfst-primary-menu > li > ul.sub-menu {
    display: grid;
  }
}