/* ==========================================================================
   Layout — Header / Navbar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  overflow: visible;
}

.site-header .navbar {
  background-color: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding-block: var(--space-2);
  margin-bottom: 0 !important;
  transition: box-shadow var(--duration-base) var(--ease-standard),
              border-color var(--duration-base) var(--ease-standard);
  overflow: visible;
}

.site-header--scrolled .navbar,
.site-header--mega-open .navbar {
  box-shadow: var(--shadow-md);
}

.site-header .navbar-brand.site-brand {
  padding-block: 0;
  flex-shrink: 0;
}

.site-header .navbar-brand.site-brand .site-brand__text {
  font-family: var(--font-family-base);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  color: var(--color-primary);
}

.site-header .navbar-brand.site-brand:hover .site-brand__text {
  color: var(--color-primary-hover);
}

.site-header .nav-link {
  color: var(--color-text) !important;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  padding-inline: var(--space-3) !important;
  transition: color var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard);
}

.site-header .nav-link:hover,
.site-header .nav-link:focus {
  color: var(--color-primary) !important;
  background-color: var(--color-primary-soft);
}

.site-header .nav-link.active {
  color: var(--color-primary) !important;
  font-weight: var(--font-weight-semibold);
}

.site-header .dropdown-menu {
  border-color: var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding-block: var(--space-2);
}

.site-header .dropdown-item {
  border-radius: var(--radius-sm);
  padding-block: var(--space-2);
}

.site-header .dropdown-item:hover,
.site-header .dropdown-item:focus {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
}

.site-header .dropdown-header {
  color: var(--color-text-muted);
  font-weight: var(--font-weight-semibold);
}

@media (max-width: 991.98px) {
  .site-header .navbar > .container-fluid,
  .site-header .navbar > .site-header__bar {
    row-gap: 0;
    flex-wrap: wrap;
    align-items: center;
  }

  .site-header__bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    width: 100%;
    gap: var(--space-2);
  }

  /* RTL: لوگو راست، حساب + همبرگر چپ و مشخص */
  .site-header .navbar-brand {
    order: 1;
    flex: 0 1 auto;
    font-size: var(--font-size-lg);
    margin-inline-end: 0;
  }

  .site-header__toolbar {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-inline-start: auto;
    order: 2;
  }

  .site-header .navbar-toggler {
    border-color: var(--color-border);
    padding: 0;
    margin-inline: 0;
  }

  .site-header .navbar-toggler:focus {
    box-shadow: var(--shadow-focus);
  }

  .site-header #siteNavCollapse {
    order: 3;
    width: 100%;
  }

  .site-header__toolbar .site-nav__account {
    margin: 0;
    padding: 0;
  }

  .site-header__toolbar .auth-nav {
    flex: 0 1 auto;
    max-width: min(11.5rem, 52vw);
  }

  .site-header__toolbar .auth-nav__trigger-body {
    min-width: 0;
  }

  .site-header__toolbar .auth-nav__balance-value {
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

/* ── دکمهٔ همبرگری استاندارد با انیمیشن تبدیل به ضربدر ── */
.site-nav-toggler {
  position: relative;
  display: inline-flex;
  flex-shrink: 0;
  width: 2.35rem;
  height: 2.35rem;
  align-items: center;
  justify-content: center;
  padding: 0;
  background-color: transparent;
  background-image: none !important;
  line-height: 1;
}

.site-nav-toggler__bar {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1.15rem;
  height: 2px;
  margin: 0;
  border-radius: 1px;
  background-color: var(--color-text);
  transform: translate(-50%, -50%);
  transition: transform var(--duration-base) var(--ease-standard),
              opacity var(--duration-base) var(--ease-standard),
              top var(--duration-base) var(--ease-standard);
}

.site-nav-toggler__bar:nth-child(1) {
  top: calc(50% - 6px);
}

.site-nav-toggler__bar:nth-child(3) {
  top: calc(50% + 6px);
}

.site-nav-toggler[aria-expanded="true"] .site-nav-toggler__bar:nth-child(1) {
  top: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
}

.site-nav-toggler[aria-expanded="true"] .site-nav-toggler__bar:nth-child(2) {
  opacity: 0;
}

.site-nav-toggler[aria-expanded="true"] .site-nav-toggler__bar:nth-child(3) {
  top: 50%;
  transform: translate(-50%, -50%) rotate(-45deg);
}

@media (prefers-reduced-motion: reduce) {
  .site-nav-toggler__bar {
    transition: none;
  }
}

@media (min-width: 992px) {
  .site-header__bar {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    width: 100%;
    gap: var(--space-3);
  }

  .site-header #siteNavCollapse {
    display: flex !important;
    flex: 1 1 auto;
    flex-wrap: wrap;
    align-items: center;
    overflow: visible;
  }

  .site-header__toolbar {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
  }

  .site-header__toolbar .site-nav__account {
    margin: 0;
    padding: 0;
  }

  .site-nav-toggler {
    display: none;
  }
}