/* =============================
   Jewelryshine Header
   ============================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(247, 245, 242, 0.95);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-gray-100);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
  gap: var(--space-12);
}

/* Brand */
.site-header__brand {
  display: flex;
  align-items: center;
}

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

.site-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid var(--color-primary-soft);
  background: radial-gradient(circle at 30% 20%, #fff, var(--color-primary-soft));
  position: relative;
}

.site-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 7px;
  border-radius: inherit;
  border: 1px solid var(--color-primary);
}

.site-header__logo-text {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* Navigation */
.site-header__nav {
  flex: 1 1 auto;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-12);
}

.site-header__nav-item {}

.site-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 6px 0;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  transition: width var(--transition-base);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-text);
}

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after {
  width: 100%;
}

.site-header__nav-item--highlight .site-header__nav-link {
  color: var(--color-text);
}

.site-header__nav-item--highlight .site-header__nav-link::after {
  width: 100%;
}

/* Actions */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-header__icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--color-gray-200);
  color: var(--color-text);
  font-size: 0.85rem;
  transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base), transform var(--transition-fast), box-shadow var(--transition-base);
}

.site-header__icon-link:hover,
.site-header__icon-link:focus-visible {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary-strong);
  box-shadow: var(--shadow-soft);
  transform: translateY(-1px);
}

/* Mobile Toggle */
.site-header__toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--color-gray-200);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background-color: var(--color-surface);
}

.site-header__toggle-bar {
  position: relative;
  width: 18px;
  height: 1px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-header__toggle-bar + .site-header__toggle-bar {
  margin-top: 5px;
}

/* Toggle animated state */
.site-header__toggle.is-open .site-header__toggle-bar:first-child {
  transform: translateY(3px) rotate(45deg);
}

.site-header__toggle.is-open .site-header__toggle-bar:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* Mobile layout */
@media (max-width: 900px) {
  .site-header__inner {
    flex-wrap: wrap;
    padding-top: var(--space-6);
    padding-bottom: var(--space-6);
  }

  .site-header__brand {
    flex: 0 0 auto;
  }

  .site-header__toggle {
    margin-left: auto;
  }

  .site-header__nav {
    flex: 0 0 100%;
  }

  .site-header__actions {
    flex: 0 0 auto;
  }

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: rgba(247, 245, 242, 0.98);
    border-bottom: 1px solid var(--color-gray-100);
    transform-origin: top;
    transform: scaleY(1);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-8) var(--space-16) var(--space-12);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height var(--transition-slow), opacity var(--transition-base);
  }

  .site-header__nav-list.is-open {
    max-height: 320px;
    opacity: 1;
  }

  .site-header__nav-link {
    padding: 10px 0;
  }

  .site-header__toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .site-header__actions {
    gap: var(--space-4);
  }
}

/* Reduced motion: keep accessibility */
@media (prefers-reduced-motion: reduce) {
  .site-header__nav-list,
  .site-header__icon-link,
  .site-header__toggle-bar,
  .site-header__toggle {
    transition: none !important;
  }
}