.site-header {
  position: sticky; top: 0; z-index: 1000; background-color: var(--color-bg-white);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}
.site-header__container {
  display: flex; justify-content: space-between; align-items: center; max-width: 1920px;
  margin: 0 auto; padding: var(--header-padding-y) var(--header-padding-x); position: relative;
}
.site-header::after {
  content: ""; position: absolute; bottom: -10px; left: 0; width: 100%; height: 10px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 10' width='20' height='10' preserveAspectRatio='none'%3E%3Cpolygon points='0,0 10,10 20,0' fill='%23ffffff'/%3E%3Cpolygon points='0,0 10,10 20,0 20,2 10,10 0,2' fill='%23eadeb8' opacity='0.7'/%3E%3C/svg%3E");
  background-repeat: repeat-x; background-size: 20px 10px; pointer-events: none; z-index: 1;
}

.site-header__logo-link { display: flex; align-items: center; width: clamp(55px, 40px + 3svw, 80px); transition: opacity 0.25s ease; flex-shrink: 0; }
.site-header__logo-link:hover { opacity: 0.9; }
.site-header__logo { width: 100%; height: auto; display: block; }
.site-header__navigation { display: flex; align-items: center; }
.site-header__menu { display: flex; list-style: none; margin: 0; padding: 0; gap: var(--nav-gap); }
.site-header__link {
  text-decoration: none; color: var(--color-text-dark); font-size: var(--font-size-nav);
  font-weight: var(--font-weight-nav); letter-spacing: var(--letter-spacing-nav); text-transform: uppercase;
  position: relative; padding: 0.5rem 0; transition: color 0.25s ease;
}
.site-header__link:hover, .site-header__link--active { color: var(--color-brand-magenta); }
.site-header__link::after {
  content: ""; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%) scaleX(0); width: 100%; height: 2px;
  background-color: var(--color-brand-magenta); transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.site-header__link:hover::after, .site-header__link--active::after { transform: translateX(-50%) scaleX(1); }

.lang-switcher { position: relative; display: flex; align-items: center; }
.lang-switcher__btn { background: none; border: none; cursor: pointer; padding: 0; display: flex; align-items: center; position: relative; width: 44px; height: 36px; border-radius: 50%; transition: transform 0.2s ease; }
.lang-switcher__btn:hover { transform: scale(1.05); }
.lang-switcher__flags { width: 100%; height: 100%; }
.lang-switcher__dropdown {
  position: absolute; top: 110%; right: 0; background-color: var(--color-bg-white); border: 1px solid rgba(0, 0, 0, 0.08); border-radius: 8px; box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08); list-style: none; padding: 0.5rem 0; margin: 0; min-width: 130px; z-index: 10;
}
.lang-switcher__dropdown:popover-open { display: block; }
.lang-switcher__dropdown::backdrop { background: transparent; }
.lang-switcher__item a { display: flex; align-items: center; gap: 8px; padding: 0.6rem 1rem; color: var(--color-text-dark); text-decoration: none; font-size: 0.813rem; font-weight: 500; transition: background-color 0.2s, color 0.2s; }
.lang-switcher__item a:hover { background-color: rgba(197, 6, 78, 0.05); color: var(--color-brand-magenta); }

.site-header__toggle { display: none; background: none; border: none; padding: 10px; cursor: pointer; z-index: 1100; }
.site-header__burger { display: block; width: 24px; height: 2px; background-color: var(--color-text-dark); position: relative; transition: background-color 0.3s; }
.site-header__burger::before, .site-header__burger::after { content: ""; position: absolute; width: 24px; height: 2px; background-color: var(--color-text-dark); left: 0; transition: transform 0.3s, top 0.3s; }
.site-header__burger::before { top: -6px; } .site-header__burger::after { top: 6px; }
.site-header__toggle[aria-expanded="true"] .site-header__burger { background-color: transparent; }
.site-header__toggle[aria-expanded="true"] .site-header__burger::before { transform: rotate(45deg); top: 0; }
.site-header__toggle[aria-expanded="true"] .site-header__burger::after { transform: rotate(-45deg); top: 0; }

@media (max-width: 1024px) {
  .site-header__toggle { display: block; }
  .site-header__navigation { position: fixed; top: 0; right: 0; width: 100%; height: 100svh; background-color: var(--color-bg-white); z-index: 1050; display: flex; justify-content: center; align-items: center; transform: translateX(100%); transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
  .site-header__navigation--open { transform: translateX(0); }
  .site-header__menu { flex-direction: column; align-items: center; gap: 2rem; }
  .site-header__link { font-size: 1.25rem; }
}