.lx-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-sm);
}

.lx-header__inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1.4fr) auto;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

@media (max-width: 960px) {
  .lx-header__inner {
    grid-template-columns: auto auto;
    grid-template-rows: auto auto;
    grid-template-areas:
      "brand actions"
      "search search";
    row-gap: var(--space-3);
  }

  .lx-header__brand-wrap {
    grid-area: brand;
  }

  .lx-header__search {
    grid-area: search;
  }
}

.lx-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.lx-header__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: radial-gradient(circle at 20% 20%, #60a5fa, #1d4ed8 55%, #020617 100%);
  color: #ffffff;
  font-weight: 700;
  font-size: 1.15rem;
  box-shadow: var(--shadow-md);
}

.lx-header__brand-text {
  display: flex;
  flex-direction: column;
}

.lx-header__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.lx-header__subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.lx-header__search {
  max-width: 560px;
  width: 100%;
  margin-inline: auto;
}

.lx-header__search-form {
  display: flex;
  align-items: stretch;
  gap: var(--space-2);
}

.lx-header__search-form input[type="search"] {
  border-radius: var(--radius-pill);
  padding-left: 0.9rem;
  padding-right: 0.9rem;
}

.lx-header__search-btn {
  border-radius: var(--radius-pill);
  padding-inline: 0.9rem;
}

@media (max-width: 640px) {
  .lx-header__search-form {
    gap: var(--space-1);
  }

  .lx-header__search {
    width: 100%;
  }
}

.lx-header__actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

.lx-header__icon-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  color: var(--color-gray-700);
  background-color: var(--color-gray-50);
  border: 1px solid transparent;
  transition: background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

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

.lx-header__icon-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.lx-header__cart-count {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 16px;
  height: 16px;
  border-radius: 999px;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: var(--font-size-xs);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

.lx-header__menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  color: var(--color-text);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.lx-header__menu-toggle:hover {
  background-color: var(--color-gray-50);
  box-shadow: var(--shadow-sm);
}

.lx-header__menu-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.lx-header__menu-toggle-icon,
.lx-header__menu-toggle-icon::before,
.lx-header__menu-toggle-icon::after {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-gray-800);
  position: relative;
  transition: transform var(--transition-normal),
    opacity var(--transition-normal),
    top var(--transition-normal),
    bottom var(--transition-normal);
}

.lx-header__menu-toggle-icon::before,
.lx-header__menu-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.lx-header__menu-toggle-icon::before {
  top: -6px;
}

.lx-header__menu-toggle-icon::after {
  bottom: -6px;
}

.lx-header__menu-toggle[aria-expanded="true"] .lx-header__menu-toggle-icon {
  background-color: transparent;
}

.lx-header__menu-toggle[aria-expanded="true"] .lx-header__menu-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.lx-header__menu-toggle[aria-expanded="true"] .lx-header__menu-toggle-icon::after {
  bottom: 0;
  transform: rotate(-45deg);
}

.lx-header__nav {
  margin-left: var(--space-6);
  grid-column: 1 / -1;
}

.lx-header__nav-list {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  justify-content: space-evenly;
    align-items: center;
    width: 100%;
}

.lx-header__nav-item--secondary {
  margin-left: var(--space-2);
}

.lx-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
  padding-block: 0.25rem;
}

.lx-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #60a5fa, #2563eb);
  transform-origin: center;
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.lx-header__nav-link:hover::after,
.lx-header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

.lx-header__nav-link:hover {
  color: var(--color-primary-strong);
}

.lx-header__nav-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@media (max-width: 960px) {
  .lx-header__nav {
    position: fixed;
    inset-inline: 0;
    top: calc(56px + 8px);
    background-color: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-normal),
      transform var(--transition-normal),
      visibility var(--transition-normal);
  }

  .lx-header__nav-list {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-lg);
  }

  .lx-header__nav-item + .lx-header__nav-item {
    border-top: 1px solid var(--color-border-subtle);
  }

  .lx-header__nav-item--secondary {
    margin-left: 0;
  }

  .lx-header__nav-link {
    padding: 0.85rem var(--space-4);
    display: block;
  }

  .lx-header__nav-link::after {
    display: none;
  }

  .lx-header__menu-toggle {
    display: inline-flex;
  }

  .lx-header__nav--open {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
  }
}

@media (max-width: 640px) {
  .lx-header__inner {
    padding-inline: var(--space-3);
  }

  .lx-header__brand-text {
    display: none;
  }

  .lx-header__search-form input[type="search"] {
    font-size: var(--font-size-xs);
  }
}

@media (prefers-reduced-motion: reduce) {
  .lx-header,
  .lx-header__nav,
  .lx-header__menu-toggle-icon,
  .lx-header__icon-link {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media (min-width: 961px) {
  .lx-header__nav-link {
    font-size: var(--font-size-xl);
  }
}