/* ==========================================================================
   Site header / primary navigation
   Clean, framework-free replacement for the old Tilda T228 menu.
   Uses the design tokens defined in global.css.
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  background-color: var(--elevations-surface-default);
  border-bottom: 1px solid var(--divider-neutral);
  font-family: var(--font-roboto-flex);
}

.site-header__inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lgc-space-300);
  padding: var(--lgc-space-200) var(--lgc-space-500);
  box-sizing: border-box;
}

/* Logo --------------------------------------------------------------------- */
.site-header__logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
.site-header__logo img {
  height: 32px;
  width: auto;
  display: block;
}

/* Nav + actions wrapper (collapses on mobile) ------------------------------ */
.site-header__nav-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--lgc-space-300);
}

/* Primary nav -------------------------------------------------------------- */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--lgc-space-050);
  margin-inline: auto;
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--lgc-space-050);
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav__item {
  position: relative;
}
.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--lgc-space-050);
  padding: var(--lgc-space-100) var(--lgc-space-200);
  border-radius: var(--button-btn-radius-md);
  font-size: var(--fs-16);
  line-height: var(--lh-24);
  font-weight: 500;
  letter-spacing: var(--ls-0_15);
  color: var(--button-plain-neutral-color);
  text-decoration: none;
  background: none;
  border: 0;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s ease, background-color 0.15s ease;
}
.site-nav__link:hover,
.site-nav__link:focus-visible,
.site-nav__item.is-open > .site-nav__link {
  color: var(--text-primary);
  background-color: var(--elevations-surface-overlay);
}
.site-nav__link.is-active {
  color: var(--text-primary);
}
.site-nav__caret {
  width: 18px;
  height: 18px;
  transition: transform 0.2s ease;
}
.site-nav__item.is-open .site-nav__caret {
  transform: rotate(180deg);
}

/* Dropdown submenu (Product, language) ------------------------------------- */
.submenu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  background-color: var(--contextmenu-item-bg);
  border: 1px solid var(--divider-neutral);
  border-radius: var(--radius-lg);
  box-shadow: var(--large);
  padding: var(--lgc-space-100);
  margin: 0;
  list-style: none;
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 1001;
}
.submenu--right {
  left: auto;
  right: 0;
}
.site-nav__item.is-open > .submenu {
  display: flex;
}
.submenu__link {
  display: block;
  padding: var(--lgc-space-100) var(--lgc-space-200);
  border-radius: var(--button-btn-radius-md);
  font-size: var(--fs-16);
  line-height: var(--lh-24);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
}
.submenu__link:hover,
.submenu__link:focus-visible {
  background-color: var(--contextmenu-item-hover-bg);
  color: var(--text-primary);
}
.submenu__link.is-active {
  color: var(--button-solid-primary-bg);
}

/* Right-side actions ------------------------------------------------------- */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--lgc-space-150);
  flex-shrink: 0;
}
.site-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--lgc-space-100);
  padding: var(--lgc-space-100) var(--lgc-space-300);
  border-radius: var(--button-btn-radius-md);
  font-family: var(--font-roboto-flex);
  font-size: var(--fs-16);
  line-height: var(--lh-24);
  font-weight: 500;
  letter-spacing: var(--ls-0_15);
  text-decoration: none;
  cursor: pointer;
  border: 0;
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.site-btn--ghost {
  color: var(--button-plain-neutral-color);
  background: none;
}
.site-btn--ghost:hover,
.site-btn--ghost:focus-visible {
  color: var(--text-primary);
  background-color: var(--elevations-surface-overlay);
}
.site-btn--primary {
  color: var(--button-solid-primary-color);
  background-color: var(--button-solid-primary-bg);
}
.site-btn--primary:hover,
.site-btn--primary:focus-visible {
  background-color: #0a66b3;
}

/* Mobile burger ------------------------------------------------------------ */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: none;
  border: 0;
  cursor: pointer;
  box-sizing: border-box;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.site-header.is-menu-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-header.is-menu-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}
.site-header.is-menu-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Responsive: collapse nav into a slide-down panel on tablet / mobile
   ========================================================================== */
@media (max-width: 980px) {
  .nav-toggle {
    display: flex;
  }
  .site-header__inner {
    padding: var(--lgc-space-150) var(--lgc-space-300);
  }

  /* Everything that isn't the logo/burger moves into the collapsible panel */
  .site-header__nav-wrap {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--lgc-space-200);
    background-color: var(--elevations-surface-default);
    border-bottom: 1px solid var(--divider-neutral);
    box-shadow: var(--large);
    padding: var(--lgc-space-300);
    display: none;
  }
  .site-header.is-menu-open .site-header__nav-wrap {
    display: flex;
  }

  .site-nav,
  .site-nav__list,
  .site-header__actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: var(--lgc-space-050);
  }

  .site-nav__link {
    justify-content: space-between;
    width: 100%;
    font-size: var(--fs-18);
    padding: var(--lgc-space-150) var(--lgc-space-200);
  }

  /* Submenus render inline (accordion) instead of floating overlays */
  .submenu {
    position: static;
    display: none;
    box-shadow: none;
    border: 0;
    border-radius: 0;
    padding: 0 0 var(--lgc-space-100) var(--lgc-space-300);
    min-width: 0;
  }
  .submenu--right {
    right: auto;
  }
  .site-nav__item.is-open > .submenu {
    display: flex;
  }

  .site-header__actions {
    gap: var(--lgc-space-150);
    margin-top: var(--lgc-space-100);
  }
  .site-btn {
    width: 100%;
    padding: var(--lgc-space-150) var(--lgc-space-300);
    font-size: var(--fs-18);
  }
}