/* ============================================================
   BLOCK: Product header — шапка страницы товара
   Своя, компактная: логотип слева, меню по центру, корзина справа.
   Mobile: меню прячется за бургер и открывается панелью.
   ============================================================ */

.product-header {
  position: relative;
  z-index: var(--z-header);
  background: var(--c-bg);
}

.product-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: clamp(4rem, 8.65vw, 10.5rem);
  padding-inline: clamp(1rem, 0.94vw, 2.5rem);
}

.product-header__logo {
  /* 24px на широком экране, на телефоне от 18px */
  font-size: clamp(1.125rem, 1.25vw, 1.5rem);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ---------- Меню: mobile — панель под шапкой ---------- */
.product-header__nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--c-bg);
  border-top: 1px solid var(--c-line);
  padding: clamp(1rem, 4vw, 1.5rem) clamp(1rem, 0.94vw, 2.5rem);
}

.product-header.is-open .product-header__nav {
  display: block;
}

.product-header__list {
  display: grid;
  gap: 1rem;
  font-size: clamp(1rem, 4vw, 1.25rem);
}

.product-header__link {
  transition: opacity var(--dur-fast) var(--ease-out);
}

.product-header__link:hover {
  opacity: 0.6;
}

.product-header__actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.product-header__cart {
  font-size: clamp(0.8125rem, 0.85vw, 1rem);
  transition: opacity var(--dur-fast) var(--ease-out);
}

.product-header__cart:hover {
  opacity: 0.6;
}

/* ---------- Бургер (только mobile) ---------- */
.product-header__burger {
  position: relative;
  display: grid;
  align-content: center;
  gap: 6px;
  width: 2.5rem;
  height: 2.5rem;
}

.product-header__burger-line {
  display: block;
  height: 1.5px;
  width: 1.5rem;
  margin-inline: auto;
  background: var(--c-ink);
  transition: transform var(--dur) var(--ease-out);
}

.product-header.is-open .product-header__burger-line:first-child {
  transform: translateY(3.75px) rotate(45deg);
}

.product-header.is-open .product-header__burger-line:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

/* ---------- Desktop: меню по центру, бургер скрыт ---------- */
@media (min-width: 1024px) {
  .product-header__inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
  }

  .product-header__nav {
    display: block;
    position: static;
    background: none;
    border: 0;
    padding: 0;
  }

  .product-header__list {
    display: flex;
    gap: 1.6vw;
    font-size: clamp(0.8125rem, 0.85vw, 1rem);
  }

  .product-header__actions {
    justify-content: flex-end;
  }

  .product-header__burger {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .product-header__burger-line,
  .product-header__link,
  .product-header__cart {
    transition: none;
  }
}