/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-graphite);
  box-shadow: var(--shadow-header);
  transition: background 350ms ease, box-shadow 350ms ease, backdrop-filter 350ms ease;
}

/* Прозрачный хедер поверх hero (только на главной) */
.header--hero {
  background: transparent;
  box-shadow: none;
}
.header--hero .header__top {
  background: transparent;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.header--hero .nav {
  background: transparent;
  border-top-color: rgba(255,255,255,.05);
}

/* После скролла — стекло */
.header--hero.scrolled {
  background: rgba(17, 17, 19, 0.92);
  box-shadow: 0 2px 24px rgba(17,17,19,.45);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.header--hero.scrolled .header__top {
  background: transparent;
  border-bottom-color: rgba(255,255,255,.08);
}
.header--hero.scrolled .nav {
  background: transparent;
}

.header__top {
  background: #111113;
  padding: 8px 0;
  transition: background 350ms ease;
}
.header__top-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}
.header__top-inner a:hover { color: var(--color-accent); }
.header__top-contacts {
  display: flex;
  gap: var(--spacing-lg);
}

.header__main {
  padding: var(--spacing-md) 0;
}
.header__inner {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

/* Логотип */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}
.logo__icon {
  width: 40px;
  height: 40px;
  background: var(--color-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo__text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
}
.logo__text span { color: var(--color-accent); }

/* Поиск */
.search {
  flex: 1;
  position: relative;
  max-width: 480px;
}
.search__input {
  width: 100%;
  padding: 11px 48px 11px 16px;
  border-radius: var(--radius-full);
  border: 2px solid rgba(255,255,255,.1);
  background: rgba(255,255,255,.08);
  color: white;
  font-size: var(--font-size-sm);
  transition: border-color var(--transition);
  outline: none;
}
.search__input::placeholder { color: rgba(255,255,255,.4); }
.search__input:focus { border-color: var(--color-accent); }
.search__btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
  transition: color var(--transition);
}
.search__btn:hover { color: var(--color-accent); }

/* Действия в хедере */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-left: auto;
}
.header__action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: rgba(255,255,255,.7);
  font-size: 10px;
  transition: color var(--transition);
  position: relative;
}
.header__action-btn:hover { color: var(--color-accent); }
.header__action-btn svg { width: 22px; height: 22px; }

.cart-count {
  position: absolute;
  top: -6px;
  right: -6px;
  background: var(--color-accent);
  color: white;
  font-size: 10px;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Навигация */
.nav {
  background: #252528;
  border-top: 1px solid rgba(255,255,255,.06);
  transition: background 350ms ease;
}
.nav__list {
  display: flex;
  align-items: center;
}
.nav__link {
  display: block;
  padding: 14px 16px;
  color: rgba(255,255,255,.8);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition);
  white-space: nowrap;
}
.nav__link:hover,
.nav__link.active { color: var(--color-accent); }

/* Мобильное меню */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--spacing-xs);
}
.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-graphite);
  color: rgba(255,255,255,.75);
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xxl);
}
.footer__col-title {
  color: white;
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}
.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.footer__links a {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.6);
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--color-accent); }

.footer__logo {
  margin-bottom: var(--spacing-md);
}
.footer__desc {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  color: rgba(255,255,255,.5);
  margin-bottom: var(--spacing-md);
}

.footer__social {
  display: flex;
  gap: var(--spacing-sm);
}
.social-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.6);
  transition: all var(--transition);
}
.social-btn:hover {
  background: var(--color-accent);
  color: white;
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,.4);
}

/* ===== АДАПТИВНОСТЬ ===== */
@media (max-width: 1024px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  h1 { font-size: 40px; }
}

@media (max-width: 768px) {
  /* Хедер */
  .header__top { display: none; }
  .search { display: none; }
  .burger { display: flex; }
  .nav { display: none; }
  .nav.open {
    display: block;
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    background: var(--color-graphite);
    z-index: 99;
    padding: 16px 0 24px;
    box-shadow: 0 8px 32px rgba(0,0,0,.4);
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__link {
    display: block;
    padding: 14px 20px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255,255,255,.06);
  }
  .header__actions { gap: 16px; }
  .header__action-btn span { display: none; } /* Убираем подписи иконок */
  .header__inner { gap: 12px; }
  .logo__text { font-size: 18px; }

  /* Типографика */
  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  h3 { font-size: 18px; }

  /* Отступы секций */
  .section { padding: 40px 0; }

  /* Футер */
  .footer__grid { grid-template-columns: 1fr; gap: var(--spacing-lg); }
  .footer__bottom { flex-direction: column; gap: var(--spacing-sm); text-align: center; }
  .footer__logo { justify-content: center; }
}

@media (max-width: 480px) {
  :root { --container-pad: 16px; }
  h1 { font-size: 24px; }
  h2 { font-size: 20px; }
  .btn-lg { padding: 14px 20px; font-size: var(--font-size-base); }
  .btn { padding: 10px 18px; }

  /* Хедер ещё компактнее */
  .header__main { padding: 12px 0; }
  .logo__icon { width: 34px; height: 34px; }
  .logo__text { font-size: 16px; }
  .header__action-btn svg { width: 20px; height: 20px; }
}