.header {
  position: relative;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background 0.3s ease, box-shadow 0.3s ease, color 0.3s ease;
  overflow: visible;
}

/* На внутренних страницах — светлый хедер */
.header:not(.header-over-hero) {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.header:not(.header-over-hero).scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.97);
}

/* На главной — градиентный хедер: один цвет сверху, к низу прозрачнее */
.header-over-hero {
  background-image: linear-gradient(180deg, #013eb7 1%, rgba(255, 255, 255, 0) 100%);
  min-height: 150px;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.header-over-hero .logo-text,
.header-over-hero .nav-link,
.header-over-hero .nav-link-dropdown {
  color: #fff;
}

.header-over-hero .nav-link:hover,
.header-over-hero .nav-link-dropdown:hover {
  color: rgba(255, 255, 255, 0.9);
}

.header-over-hero .nav-link::after,
.header-over-hero .nav-link.active::after {
  background: var(--accent);
}

.header-over-hero .nav-link.active,
.header-over-hero .nav-link-dropdown.active {
  color: var(--accent);
}

.header-over-hero .logo-icon img {
  filter: brightness(0) invert(1);
}

/* header-over-hero lang buttons handled via .header-over-hero .header-lang-btn */

.header-over-hero .mobile-menu-toggle span {
  background: #fff;
}

.nav-measure {
  position: absolute;
  left: -9999px;
  top: 0;
  visibility: hidden;
  pointer-events: none;
  display: flex;
  gap: 0 1.25rem;
  align-items: center;
  font-weight: 500;
  font-size: 0.875rem;
  white-space: nowrap;
}

.nav-measure-item {
  flex-shrink: 0;
}

/* ===== Grid layout ===== */
.header-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  align-items: center;
  overflow: visible;
  margin-top: 10px;
}

.header-logo {
  grid-row: 1 / 3;
  grid-column: 1;
  display: flex;
  align-items: center;
  padding-right: 2rem;
}

.header-top-row {
  grid-row: 1;
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1.5rem;
  padding-bottom: 0.25rem;
}

.header-nav-row {
  grid-row: 2;
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  overflow: visible;
}

/* ===== Contact links in top row ===== */
.header-contacts {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.header-contact-link {
  font-size: 0.9375rem;
  color: var(--text-dark);
  text-decoration: none;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.header-contact-link:hover {
  color: var(--primary);
}

.header-contact-phone {
  font-size: 1.5rem;
  letter-spacing: 0.01em;
  margin: 0 100px;
}

/* ===== Inline language switcher ===== */
.header-lang {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.header-lang-sep {
  color: var(--text-muted, #94a3b8);
  font-size: 0.8125rem;
  user-select: none;
}

.header-lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-dark);
  padding: 0.15rem 0.25rem;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.header-lang-btn:hover {
  color: var(--primary);
}

.header-lang-btn.active {
  color: var(--text-muted, #94a3b8);
  text-underline-offset: 3px;
}

/* Over-hero (home page) styles for new elements */
.header-over-hero .header-contact-link {
  color: #fff;
}

.header-over-hero .header-contact-link:hover {
  color: rgba(255, 255, 255, 0.8);
}

.header-over-hero .header-lang-sep {
  color: rgba(255, 255, 255, 0.5);
}

.header-over-hero .header-lang-btn {
  color: #fff;
}

.header-over-hero .header-lang-btn:hover {
  color: rgba(255, 255, 255, 0.6);
}

.header-over-hero .header-lang-btn.active {
  color: rgba(255, 255, 255, 0.6);
}

/* Legacy header-content kept for compat but no longer primary */
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 3.5rem;
  overflow: visible;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: transform 0.2s ease;
  flex-shrink: 0;
  min-width: fit-content;
}

/* Комбинация как на скрине: иконка сверху, название по центру под ней */
.logo-stacked {
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

.logo:hover {
  transform: scale(1.02);
}

.logo-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
}

.logo-stacked .logo-icon {
  width: 56px;
  height: 56px;
}

.logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.logo-text {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo-stacked .logo-text {
  font-size: 1.3125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: center;
}

.nav {
  display: flex;
  flex-wrap: nowrap;
  gap: 0;
  align-items: center;
  justify-content: flex-end;
  flex: 1 1 auto;
  min-width: 0;
  overflow: visible;
}

.nav-links-wrap {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.75rem 1.25rem;
  align-items: center;
  justify-content: flex-end;
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  overflow: visible;
}

.nav-link {
  position: relative;
  font-weight: 500;
  font-size: 1rem;
  color: var(--text-dark);
  transition: color 0.2s ease;
  padding: 0.35rem 0;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--primary);
}

.nav-dropdown-wrap {
  position: relative;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-link-dropdown {
  background: none;
  border: none;
  font: inherit;
  font-weight: 500;
  font-size: 1rem;
  color: var(--text-dark);
  padding: 0.35rem 0;
  white-space: nowrap;
  text-decoration: none;
}

a.nav-link-dropdown {
  text-decoration: none;
}

.nav-link-dropdown:hover {
  color: var(--primary);
}

.nav-dropdown-chevron {
  font-size: .6rem;
  transition: transform 0.2s ease;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.2rem;
  /* Принудительно берём цвет текста родителя, чтобы перебить серый из иконок */
  color: currentColor !important;
}

/* На градиентном хедере — белая стрелка по умолчанию */
.header-over-hero .nav-dropdown-chevron {
  color: #fff !important;
}

/* При ховере по триггеру/обёртке — оранжевая стрелка */
.header-over-hero .nav-dropdown-wrap:hover .nav-dropdown-chevron,
.header-over-hero .nav-dropdown-trigger:hover .nav-dropdown-chevron {
  color: var(--accent) !important;
}

.nav-dropdown-chevron[aria-expanded="true"],
.nav-dropdown-wrap [aria-expanded="true"] .nav-dropdown-chevron,
.nav-more-wrap [aria-expanded="true"] .nav-dropdown-chevron {
  transform: rotate(180deg);
}

.nav-more-wrap {
  position: relative;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-link-more {
  margin-left: 0.25rem;
}

.nav-dropdown-more {
  right: 0;
  left: auto;
  min-width: 220px;
  max-height: 70vh;
  overflow-y: auto;
}

.nav-overflow-group {
  display: flex;
  flex-direction: column;
  padding: 0.25rem 0;
}

.nav-overflow-group .nav-dropdown-label {
  padding: 0.5rem 1rem 0.25rem;
}

.nav-overflow-group .nav-dropdown-label:first-child {
  padding-top: 0.5rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.nav-overflow-group + .nav-overflow-group {
  border-top: 1px solid var(--border);
}

.nav-overflow-group .nav-dropdown-item {
  padding: 0.6rem 1rem;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 0.35rem;
  min-width: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0;
  box-shadow: var(--shadow-lg);
  padding: 0.5rem 0;
  z-index: 1001;
  display: flex;
  flex-direction: column;
}

.nav-dropdown-label {
  padding: 0.5rem 1rem 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.nav-dropdown-item {
  padding: 0.6rem 1rem;
  color: var(--text-body);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
  font-size: 0.9rem;
}

.nav-dropdown-item:hover {
  background: var(--bg-muted);
  color: var(--primary);
}

/* ===== Mega-menu (cascading flyout) ===== */
.nav-mega-menu {
  flex-direction: column;
  min-width: 240px;
  max-width: 280px;
  padding: 0.35rem 0;
  gap: 0;
  right: 0;
  left: auto;
}

/* --- Level 1: секции (Металлургическая / Литейное / Качество) --- */
.nav-mega-l1 {
  position: relative;
}

/* Невидимый «мостик» между пунктом L1 и flyout, чтобы при переходе курсора не терялся hover */
.nav-mega-l1:has(.nav-mega-flyout)::after {
  content: '';
  position: absolute;
  left: 100%;
  top: -0.35rem;
  width: 240px;
  min-height: 320px;
  z-index: 1001;
}

.nav-mega-l1-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.55rem 1rem;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-dark);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.nav-mega-l1.active > .nav-mega-l1-link,
.nav-mega-l1-link:hover {
  background: var(--bg-muted, #f1f5f9);
  color: var(--primary);
}

/* --- Flyout panel (shared for L2 and L3): показывать только при наведении на L1 --- */
.nav-mega-flyout {
  position: absolute;
  top: 0;
  left: 100%;
  min-width: 220px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0;
  box-shadow: var(--shadow-lg);
  padding: 0.35rem 0;
  z-index: 1002;
  display: flex;
  flex-direction: column;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: visibility 0.15s ease, opacity 0.15s ease;
}

.nav-mega-l1:hover .nav-mega-flyout {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

/* --- Level 2: категории (Стальная заготовка / Арматура / ...) --- */
.nav-mega-l2 {
  position: relative;
}

.nav-mega-l2-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-body);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.nav-mega-l2.active > .nav-mega-l2-link,
.nav-mega-l2-link:hover {
  background: var(--bg-muted, #f1f5f9);
  color: var(--primary);
}

/* --- Level 3: товары (120×120, Ø12, Колодка, ...) --- */
.nav-mega-l3-link {
  display: block;
  padding: 0.4rem 1rem;
  font-size: 0.8125rem;
  color: var(--text-body);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.nav-mega-l3-link:hover {
  background: var(--bg-muted, #f1f5f9);
  color: var(--primary);
}

/* --- Chevron arrow for flyout --- */
.nav-mega-chevron {
  font-size: 0.55rem;
  opacity: 0.5;
  flex-shrink: 0;
  transition: opacity 0.15s ease;
}

.nav-mega-l1.active .nav-mega-chevron,
.nav-mega-l2.active .nav-mega-chevron,
.nav-mega-l1-link:hover .nav-mega-chevron,
.nav-mega-l2-link:hover .nav-mega-chevron {
  opacity: 1;
}

/* Legacy language selector (kept for reference, replaced by header-lang) */

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  padding: 8px;
}

.mobile-menu-toggle span {
  width: 22px;
  height: 2.5px;
  background: var(--text-dark);
  transition: all 0.3s ease;
  border-radius: 0;
}

@media (max-width: 1200px) {
  .nav-links-wrap {
    gap: 0.6rem 1rem;
  }

  .nav-link,
  .nav-link-dropdown {
    font-size: 0.8125rem;
  }
}

@media (max-width: 992px) {
  .nav-links-wrap {
    gap: 0.6rem 1rem;
  }

  .logo-text {
    font-size: 1.2rem;
  }
}

@media (max-width: 768px) {
  .nav-measure {
    display: none;
  }

  .header-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
  }

  .header-logo {
    padding-right: 0;
  }

  .header-top-row {
    display: none;
  }

  .header-nav-row {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-end;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-card);
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    gap: 0;
    align-items: flex-start;
    border-top: 1px solid var(--border);
  }

  .header-over-hero .nav.open {
    background: var(--bg-card);
  }

  .header-over-hero .nav.open .nav-link,
  .header-over-hero .nav.open .nav-link-dropdown {
    color: var(--text-dark);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links-wrap {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    overflow: visible;
    margin: 0;
    gap: 0;
  }

  .nav-link,
  .nav-link-dropdown {
    width: 100%;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    text-align: left;
    justify-content: flex-start;
  }

  .nav-dropdown-wrap {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .nav-dropdown {
    position: static;
    margin-top: 0;
    margin-bottom: 0.5rem;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding-left: 1rem;
    min-width: auto;
    border-left: 3px solid var(--accent);
  }

  .nav-dropdown-item {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
  }

  .nav-dropdown-item:last-child {
    border-bottom: none;
  }

  .nav-dropdown-label {
    padding: 0.5rem 0 0.25rem;
  }

  /* Mega-menu: вертикальная раскладка на мобильных */
  .nav-mega-menu {
    min-width: auto;
    max-width: none;
    padding: 0;
  }

  .nav-mega-l1-link,
  .nav-mega-l2-link {
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border);
  }

  .nav-mega-l3-link {
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--border);
    white-space: normal;
  }

  .nav-mega-l3-link:last-child {
    border-bottom: none;
  }

  /* Flyout становится inline-блоком вместо absolute; на мобильных всегда виден */
  .nav-mega-flyout {
    position: static;
    min-width: auto;
    border: none;
    border-radius: 0;
    box-shadow: none;
    padding: 0 0 0 1rem;
    border-left: 3px solid var(--accent);
    margin-bottom: 0.25rem;
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
  }

  .nav-mega-l1:has(.nav-mega-flyout)::after {
    display: none;
  }

  .nav-mega-chevron {
    transition: transform 0.2s ease;
  }

  .nav-mega-l1.active > .nav-mega-l1-link .nav-mega-chevron,
  .nav-mega-l2.active > .nav-mega-l2-link .nav-mega-chevron {
    transform: rotate(90deg);
  }
}