/* ==========================================================================
   Site header — brand, primary navigation and utility actions
   ========================================================================== */

.site-header {
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--header-gap);
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 2.5rem 1rem 0;
}

/* --------------------------------------------------------------------------
   Brand
   -------------------------------------------------------------------------- */
.brand {
  display: inline-flex;
  flex: none;
  align-items: center;
  padding: 0.9375rem 1.0625rem;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  transition: transform var(--duration-base) var(--ease-out);
}

.brand:hover {
  transform: translateY(-1px);
}

.brand__logo {
  width: auto;
  height: 1.6875rem;
}

/* --------------------------------------------------------------------------
   Primary navigation
   -------------------------------------------------------------------------- */
.category-nav {
  padding: 0.375rem;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
}

.category-nav__list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.category-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  height: 3.125rem;
  padding: 0 1.125rem;
  font-size: var(--fs-ui);
  font-weight: 500;
  white-space: nowrap;
  border-radius: 1rem;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

/* Hairline separator between items. It is painted in the gap so the
   rounded hover/active shapes stay clean. */
.category-nav__item + .category-nav__item {
  position: relative;
}

.category-nav__item + .category-nav__item::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 1px;
  height: 1.25rem;
  background: var(--color-line);
  transform: translateY(-50%);
}

.category-nav__item:has(.is-active) + .category-nav__item::before {
  display: none;
}

.category-nav__link:hover {
  background: var(--color-paper);
}

.category-nav__link.is-active {
  color: var(--color-white);
  background: var(--color-ink);
}

.category-nav__link svg {
  width: 1.25rem;
  height: 1.25rem;
  flex: none;
}

/* --------------------------------------------------------------------------
   Utility actions
   -------------------------------------------------------------------------- */
.site-header__actions {
  display: flex;
  flex: none;
  align-items: center;
  gap: 0.6875rem;
}

/* Language switch (ES / EN), tucked in the top-right corner. */
.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem;
  background: var(--color-white);
  border: 1px solid rgba(21, 21, 21, 0.06);
  border-radius: var(--radius-pill);
}

.lang-switch__link {
  display: grid;
  place-items: center;
  min-width: 2.25rem;
  height: 2.25rem;
  padding: 0 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-ink);
  border-radius: var(--radius-pill);
  transition:
    background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.lang-switch__link:hover:not(.is-active) {
  background: var(--color-paper);
}

.lang-switch__link.is-active {
  color: var(--color-white);
  background: var(--color-ink);
}

/* --------------------------------------------------------------------------
   Responsive: the navigation collapses into a dropdown driven by the
   menu button. It keeps the same visual language instead of a generic bar.
   -------------------------------------------------------------------------- */
/* The reference keeps the header floating over the content on desktop.
   Below 1180px it stays in the flow so it never covers the compact UI. */
@media (min-width: 1181px) {
  .site-header {
    position: sticky;
    top: 0;
  }
}

@media (max-width: 1180px) {
  .site-header {
    padding: 1.5rem var(--gutter) 0;
  }

  .category-nav {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: var(--gutter);
    right: var(--gutter);
    display: none;
    padding: 0.5rem;
    box-shadow: var(--shadow-float);
  }

  .category-nav.is-open {
    display: block;
    animation: nav-drop var(--duration-base) var(--ease-out) both;
  }

  .category-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.125rem;
  }

  .category-nav__link {
    width: 100%;
    height: 3rem;
  }

  .category-nav__item + .category-nav__item .category-nav__link {
    box-shadow: none;
  }

  .category-nav__item + .category-nav__item::before {
    display: none;
  }
}

@media (max-width: 640px) {
  .brand {
    padding: 0.75rem 0.875rem;
  }

  .brand__logo {
    height: 1.375rem;
  }

  .icon-button {
    width: 3.5rem;
    height: 3.5rem;
  }

  .icon-button svg {
    width: 1.25rem;
    height: 1.25rem;
  }

  .site-header__actions {
    gap: 0.5rem;
  }
}

@media (max-width: 420px) {
  .icon-button {
    width: 3.125rem;
    height: 3.125rem;
  }
}

@keyframes nav-drop {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}