/* ==========================================================================
   Header / Navigation
   Desktop full nav + mega-menu only at >=1280px. Hamburger below that
   (menu density: خدمات has up to 11 children per group — see spec 3.3).
   Dropdowns open on click/tap everywhere, never hover-only (rule #13).
   ========================================================================== */

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-block-end: 1px solid var(--color-line);
  block-size: var(--header-height-mobile);
}

@media (min-width: 1280px) {
  .site-header {
    block-size: var(--header-height);
  }
}

.site-header__inner {
  max-inline-size: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  block-size: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-header__logo img {
  block-size: 40px;
  inline-size: auto;
}

@media (min-width: 1280px) {
  .site-header__logo img {
    block-size: 48px;
  }
}

/* ---- Desktop nav (>=1280px only) ---- */
.site-nav {
  display: none;
}

@media (min-width: 1280px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
  }

  .site-nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-6);
  }

  .site-nav__item {
    position: relative; /* anchors .dropdown / .mega-menu to THIS item, not a distant ancestor */
  }

  .site-nav__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--fs-small);
    font-weight: 600;
    padding-block: var(--space-2);
  }

  .site-nav__link svg {
    inline-size: 14px;
    block-size: 14px;
    transition: transform var(--duration-fast) var(--ease-standard);
  }

  .site-nav__item[data-open="true"] .site-nav__link svg {
    transform: rotate(180deg);
  }

  .site-nav__actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
  }
}

/* ---- Mega-menu panel (desktop) ----
   Uses position:fixed (viewport-relative), NOT position:absolute relative
   to .site-nav__item — the trigger button is narrow, so anchoring to it
   would only give the panel the trigger's width instead of the full header
   width. Fixed positioning intentionally ignores that narrow ancestor. */
.mega-menu {
  position: fixed;
  inset-inline-start: 0;
  inset-block-start: var(--header-height);
  inline-size: 100vw;
  background: var(--color-white);
  border-block-end: 1px solid var(--color-line);
  box-shadow: 0 24px 48px -12px rgba(var(--color-navy-rgb), 0.18);
  z-index: var(--z-dropdown);
  display: none;
  padding-block: var(--space-8);
}

.site-nav__item[data-open="true"] .mega-menu {
  display: block;
}

.mega-menu__grid {
  max-inline-size: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.mega-menu__col-title {
  font-size: var(--fs-small);
  color: var(--color-accent);
  font-weight: 700;
  margin-block-end: var(--space-3);
  padding-block-end: var(--space-2);
  border-block-end: 1px solid var(--color-line);
}

.mega-menu__col ul li a {
  display: block;
  padding-block: var(--space-2);
  font-size: var(--fs-small);
  color: var(--text-muted-on-light);
  transition: color var(--duration-fast) var(--ease-standard);
}

.mega-menu__col ul li a:hover,
.mega-menu__col ul li a:focus-visible {
  color: var(--color-navy);
}

/* Simple dropdown (درباره) — narrower, not a 3-col mega menu */
.dropdown {
  position: absolute;
  inset-inline-start: 0;
  inset-block-start: 100%;
  min-inline-size: 240px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: 0 24px 48px -12px rgba(var(--color-navy-rgb), 0.18);
  border: 1px solid var(--color-line);
  z-index: var(--z-dropdown);
  display: none;
  padding: var(--space-3);
  margin-block-start: var(--space-2);
}

.site-nav__item[data-open="true"] .dropdown {
  display: block;
}

.dropdown li a {
  display: block;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--fs-small);
  transition: background-color var(--duration-fast) var(--ease-standard);
}

.dropdown li a:hover,
.dropdown li a:focus-visible {
  background: rgba(var(--color-navy-rgb), 0.06);
}

/* ---- Language switcher (desktop, in header) ---- */
.lang-switch {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--fs-small);
  font-weight: 600;
}

.lang-switch a {
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--text-muted-on-light);
}

.lang-switch a[aria-current="true"] {
  color: var(--color-navy);
  background: rgba(var(--color-navy-rgb), 0.06);
}

/* ---- Mobile header controls ---- */
.site-header__mobile-toggle {
  display: inline-flex;
}

@media (min-width: 1280px) {
  .site-header__mobile-toggle {
    display: none;
  }
}

/* ---- Mobile menu overlay ---- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--color-navy);
  color: var(--color-white);
  transform: translateX(100%);
  transition: transform var(--duration-base) var(--ease-standard);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

:dir(rtl) .mobile-menu {
  transform: translateX(-100%);
}

.mobile-menu[data-open="true"] {
  transform: translateX(0);
}

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--container-pad);
  min-block-size: var(--header-height-mobile);
  border-block-end: 1px solid rgba(255, 255, 255, 0.12);
}

.mobile-menu__logo {
  block-size: 28px;
  inline-size: auto;
}

.mobile-menu__body {
  padding: var(--space-6) var(--container-pad) var(--space-16);
  flex: 1;
}

.mobile-nav__item {
  border-block-end: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
  font-size: var(--fs-h4);
  font-weight: 600;
}

.mobile-nav__link svg {
  inline-size: 18px;
  block-size: 18px;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.mobile-nav__item[data-open="true"] > .mobile-nav__link svg {
  transform: rotate(180deg);
}

.mobile-nav__submenu {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--duration-base) var(--ease-standard);
}

.mobile-nav__item[data-open="true"] > .mobile-nav__submenu {
  grid-template-rows: 1fr;
}

.mobile-nav__submenu-inner {
  overflow: hidden;
}

.mobile-nav__submenu-inner ul li a {
  display: block;
  padding-block: var(--space-2);
  padding-inline-start: var(--space-4);
  font-size: var(--fs-body);
  color: var(--text-muted-on-dark);
}

/* Nested (خدمات group -> children) accordion, one level deeper */
.mobile-nav__group-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  padding-inline-start: var(--space-4);
  font-weight: 600;
  font-size: var(--fs-small);
  color: var(--color-accent);
}

.mobile-menu__contact-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-block-start: var(--space-8);
}

.mobile-menu__lang {
  display: flex;
  gap: var(--space-2);
  margin-block-start: var(--space-8);
  padding-block-start: var(--space-6);
  border-block-start: 1px solid rgba(255, 255, 255, 0.12);
}

.mobile-menu__lang a {
  flex: 1;
  text-align: center;
  padding-block: var(--space-3);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-size: var(--fs-small);
  font-weight: 600;
}