/* ==========================================================================
   Nav — primary navigation component
   Covers: trigger buttons, dropdown panel, mega menu grid, link items.
   All positioning, animation, and keyboard-state styles live here.
   ========================================================================== */


/* --------------------------------------------------------------------------
   Top-level list and items
-------------------------------------------------------------------------- */

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__item {
  position: relative; /* establishes containing block for .nav__dropdown */
}


/* --------------------------------------------------------------------------
   Trigger buttons and plain nav links
-------------------------------------------------------------------------- */

.nav__trigger,
.nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding-block: var(--space-2);
  padding-inline: var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
  border-radius: var(--radius-md);
  transition: var(--transition-colors);
}

.nav__link:visited {
  color: var(--color-text);
}

.nav__trigger:hover,
.nav__link:hover {
  background-color: rgb(128 128 128 / 0.12);
}

.nav__link:visited:hover {
  color: var(--color-text);
}

/* Active-open state mirrors hover so the button stays highlighted while its panel is open */
.nav__trigger[aria-expanded="true"] {
  background-color: rgb(128 128 128 / 0.12);
}

/* Chevron icon inside trigger */
.nav__chevron {
  flex-shrink: 0;
  transition: transform var(--duration-normal) var(--ease-out);
}

.nav__trigger[aria-expanded="true"] .nav__chevron {
  transform: rotate(180deg);
}


/* --------------------------------------------------------------------------
   Dropdown panel — shared by all mega menus

   Visibility is managed via aria-expanded on the sibling trigger.
   JS removes [hidden] on init and then only toggles aria-expanded.

   The visibility/delay trick:
   - Closing: delay visibility: hidden until after opacity fades out, so the
     panel stays interactive (and in the stacking order) while fading.
   - Opening: set visibility: visible immediately so the content appears.
-------------------------------------------------------------------------- */

.nav__dropdown {
  position: absolute;
  top: calc(100% + var(--space-3));
  left: 0;
  z-index: var(--z-dropdown);

  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow:
    0 4px 6px -1px rgb(0 0 0 / 0.07),
    0 10px 25px -5px rgb(0 0 0 / 0.12),
    0 0 0 1px rgb(0 0 0 / 0.02);
  padding: var(--space-3);

  /* Hidden state */
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition:
    opacity       var(--duration-normal) var(--ease-out),
    transform     var(--duration-normal) var(--ease-out),
    visibility    0s linear var(--duration-normal); /* delay until fade-out finishes */
}

/* Opened: sibling trigger has aria-expanded="true" */
.nav__trigger[aria-expanded="true"] + .nav__dropdown {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  transition:
    opacity       var(--duration-normal) var(--ease-out),
    transform     var(--duration-normal) var(--ease-out),
    visibility    0s linear 0s; /* visible immediately */
}

/* Right-aligned variant — used for panels near the right edge of the nav */
.nav__dropdown--align-right {
  left: auto;
  right: 0;
}


/* --------------------------------------------------------------------------
   Panel list — the grid of mega menu links
-------------------------------------------------------------------------- */

.nav__panel-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  /* Width drives the panel container width (panel is width: max-content) */
  width: 240px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__panel-list--2col {
  grid-template-columns: repeat(2, 1fr);
  width: 480px;
}


/* --------------------------------------------------------------------------
   Panel link — individual link with title + description
-------------------------------------------------------------------------- */

.nav__panel-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  transition:
    background-color var(--duration-fast) var(--ease-default),
    box-shadow       var(--duration-fast) var(--ease-default);
  outline-offset: -2px; /* keep focus ring inside the rounded box */
}

.nav__panel-link:hover {
  background-color: rgb(128 128 128 / 0.12);
}

.nav__panel-link-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: var(--leading-snug);
  transition: color var(--duration-fast) var(--ease-default);
}

.nav__panel-link-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}


/* ==========================================================================
   Mobile navigation — below 1024 px
   ========================================================================== */


/* --------------------------------------------------------------------------
   Scroll lock — applied to <body> while the drawer is open
-------------------------------------------------------------------------- */

body.scroll-lock {
  overflow: hidden;
}


/* --------------------------------------------------------------------------
   Hamburger button — hidden on desktop, visible on mobile
-------------------------------------------------------------------------- */

.hamburger {
  display: none; /* shown via media query below */
  grid-column: 3;
  justify-self: end;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: background-color var(--duration-fast) var(--ease-default);
}

.hamburger:hover {
  background-color: var(--color-bg-subtle);
}

.hamburger__bars {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 14px;
  pointer-events: none;
}

.hamburger__bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transform-origin: center;
  transition:
    transform var(--duration-normal) var(--ease-in-out),
    opacity   var(--duration-fast)   var(--ease-in-out);
}

/* Morph bars into × when open */
.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}


/* --------------------------------------------------------------------------
   Backdrop
-------------------------------------------------------------------------- */

.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-drawer) - 1);
  background-color: rgb(0 0 0 / 0.5);
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-out);
  cursor: pointer;
}

.mobile-nav-backdrop--visible {
  opacity: 1;
}


/* --------------------------------------------------------------------------
   Off-canvas drawer
-------------------------------------------------------------------------- */

.mobile-nav {
  position: fixed;
  inset-block: 0;
  right: 0;
  z-index: var(--z-drawer);
  width: min(360px, 100vw);
  background-color: var(--color-surface);
  box-shadow:
    -4px 0 6px -1px rgb(0 0 0 / 0.07),
    -10px 0 25px -5px rgb(0 0 0 / 0.12);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-in-out);
}

.mobile-nav--open {
  transform: translateX(0);
}

.mobile-nav__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.mobile-nav__logo-link {
  display: inline-flex;
  align-items: center;
}

.mobile-nav__logo {
  height: 32px;
  width: auto;
  min-width: 90px;
}

.mobile-nav__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: var(--transition-colors);
}

.mobile-nav__close:hover {
  color: var(--color-text);
  background-color: var(--color-bg-subtle);
}

.mobile-nav__body {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-block: var(--space-2);
}

.mobile-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* Plain link (no submenu) */
.mobile-nav__link {
  display: block;
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition-colors);
}

.mobile-nav__link:hover {
  color: var(--color-primary-700);
  background-color: var(--color-primary-50);
}


/* --------------------------------------------------------------------------
   Accordion items — expandable menu groups inside the drawer
-------------------------------------------------------------------------- */

.mob-accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-align: left;
  transition: var(--transition-colors);
}

.mob-accordion__trigger:hover,
.mob-accordion__trigger[aria-expanded="true"] {
  color: var(--color-primary-700);
  background-color: var(--color-primary-50);
}

.mob-accordion__chevron {
  flex-shrink: 0;
  transition: transform var(--duration-normal) var(--ease-out);
}

.mob-accordion__trigger[aria-expanded="true"] .mob-accordion__chevron {
  transform: rotate(180deg);
}

/* Grid-row technique: animates open/close without JS height measurement */
.mob-accordion__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--duration-normal) var(--ease-out);
}

.mob-accordion[data-open] .mob-accordion__body {
  grid-template-rows: 1fr;
}

.mob-accordion__body-inner {
  overflow: hidden;
}

.mob-accordion__links {
  list-style: none;
  margin: 0;
  padding: 0 0 var(--space-2);
}

.mob-accordion__link {
  display: block;
  padding: var(--space-2) var(--space-5) var(--space-2) var(--space-10);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition-colors);
}

.mob-accordion__link:hover {
  color: var(--color-primary-700);
  background-color: var(--color-primary-50);
}


/* --------------------------------------------------------------------------
   Utility strip — contact, language, account, cart
-------------------------------------------------------------------------- */

.mobile-nav__utility {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-5);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-subtle);
}

.mobile-nav__util-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-nav__util-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  /* neutral-600 (#475569) gives ≈7:1 on bg-subtle — neutral-500 only ≈4.35:1 which fails AA at 14 px */
  color: var(--color-neutral-600);
  text-decoration: none;
  transition: var(--transition-colors);
}

.mobile-nav__util-link:hover {
  color: var(--color-text);
}

.mobile-nav__util-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* Language switcher overrides — reused inside the light utility strip */
.mobile-nav__utility .lang-switcher__option {
  /* neutral-600 for same contrast fix as .mobile-nav__util-link above */
  color: var(--color-neutral-600);
  padding-block: var(--space-2);
  padding-inline: var(--space-3);
}

.mobile-nav__utility .lang-switcher__option--active {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.mobile-nav__utility .lang-switcher__sep {
  color: var(--color-border-strong);
}

/* Account + cart buttons reused in a light context */
.mobile-nav__util-row .header__utility-btn,
.mobile-nav__util-row .cart-btn {
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding-block: var(--space-2);
  padding-inline: var(--space-3);
}

.mobile-nav__util-row .header__utility-btn:hover,
.mobile-nav__util-row .cart-btn:hover {
  color: var(--color-text);
  background-color: var(--color-surface);
  border-color: var(--color-border-strong);
}


/* --------------------------------------------------------------------------
   Domain search strip — inside mobile drawer, above main nav links
-------------------------------------------------------------------------- */

.mobile-nav__search {
  flex-shrink: 0;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

/* Mobile variant: field stretches to fill available width */
.domain-search--mobile .domain-search__field {
  flex: 1;
  min-width: 0;
}

.domain-search--mobile .domain-search__input {
  width: 100%;
}


/* --------------------------------------------------------------------------
   Narrow desktop — tighter nav triggers so all five items fit at 1024 px
-------------------------------------------------------------------------- */

@media (min-width: 1024px) and (max-width: 1199px) {
  .nav__trigger,
  .nav__link {
    font-size: var(--font-size-xs);
    padding-inline: var(--space-2);
  }
}


/* --------------------------------------------------------------------------
   Breakpoint: hide desktop nav, reveal hamburger
-------------------------------------------------------------------------- */

@media (max-width: 1023px) {
  .hamburger           { display: inline-flex; }
  .header__nav         { display: none; }
  .header__actions     { display: none; }
  .header__utility-bar { display: none; }
}