/* Header layout & identity */
.gn-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(247, 247, 245, 0.95);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.gn-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
  gap: var(--space-4);
}

/* Brand */
.gn-header__brand {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  min-width: 0;
}

.gn-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.gn-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #ffffff 0, #ffffff 35%, var(--color-primary-soft) 36%, var(--color-primary) 100%);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.gn-header__logo-text {
  display: flex;
  flex-direction: column;
}

.gn-header__logo-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.gn-header__logo-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Navigation */
.gn-header__nav {
  flex: 0 1 auto;
}

.gn-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
}

.gn-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray-700);
  padding-bottom: 0.15rem;
      
}

.gn-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-stainless));
  transition: width var(--transition-base);
}

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

.gn-header__nav-item--highlight .gn-header__nav-link {
  color: var(--color-primary-dark);
}

/* Actions */
.gn-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.gn-header__icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-subtle);
  cursor: pointer;
  transition: background-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast);
}

.gn-header__icon-btn:hover {
  background-color: var(--color-surface-soft);
  box-shadow: var(--shadow-soft);
  transform: translateY(-1px);
}

.gn-header__icon-btn i {
  font-size: 0.95rem;
  color: var(--color-gray-800);
}

.gn-header__cart-count {
  position: absolute;
  transform: translate(0.5rem, -0.8rem);
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: 999px;
  background-color: var(--color-primary-dark);
  color: #ffffff;
  font-size: 0.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Mobile toggle */
.gn-header__toggle {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-subtle);
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.gn-header__toggle-bar {
  position: absolute;
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-gray-800);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.gn-header__toggle-bar:first-child {
  top: 0.95rem;
}

.gn-header__toggle-bar:last-child {
  bottom: 0.95rem;
}

.gn-header__toggle.is-open .gn-header__toggle-bar:first-child {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.gn-header__toggle.is-open .gn-header__toggle-bar:last-child {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* Responsive behavior */
@media (max-width: 900px) {
  .gn-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

  .gn-header__logo-subtitle {
    display: none;
  }

  .gn-header__toggle {
    display: inline-flex;
  }

  .gn-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: rgba(247, 247, 245, 0.98);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border-subtle);
    transform-origin: top;
    transform: scaleY(0.96);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility 0s linear var(--transition-base);
  }

  .gn-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3) var(--space-4) var(--space-4);
    gap: var(--space-2);

  }

  .gn-header__nav-link {
    padding: 0.35rem 0;
    font-size: var(--font-size-md);
  }

  .gn-header__nav--open {
    opacity: 1;
    transform: scaleY(1);
    visibility: visible;
    pointer-events: auto;
    transition: opacity var(--transition-base), transform var(--transition-base);
  }

  .gn-header__actions {
    gap: var(--space-1);
  }

  .gn-header__action-link {
    display: none;
  }
}

@media (max-width: 600px) {
  .gn-header__cart-count {
    transform: translate(0.4rem, -0.9rem);
  }
}

@media (min-width: 901px) {
  .gn-header__nav {
    display: block;
  }
}