.site-header {
  position: fixed;
  inset: 0 0 auto;
  height: 78px;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(231, 237, 245, 0.85);
  transition: height var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal);
}

.site-header.scrolled {
  height: 66px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 30px rgba(16, 27, 45, 0.08);
}

.header-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.logo-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.logo-link:hover {
  transform: scale(1.04);
}

.logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-link {
  position: relative;
  font-size: 14px;
  font-weight: 800;
  color: var(--color-dark);
  padding: 28px 0;
  transition: color var(--transition-fast);
}

.site-header.scrolled .nav-link {
  padding: 23px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 18px;
  width: 0;
  height: 3px;
  border-radius: 999px;
  background: var(--color-primary);
  transition: width var(--transition-fast);
}

.site-header.scrolled .nav-link::after {
  bottom: 13px;
}

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

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-header {
  min-height: 48px;
  padding: 0 22px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 13px;
  box-shadow: 0 14px 28px rgba(0, 87, 255, 0.22);
}

.btn-header:hover {
  transform: translateY(-3px);
  background: var(--color-primary-hover);
}

.language-btn {
  min-height: 48px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  color: var(--color-dark);
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-white);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-primary-soft);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 999px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* =========================
   LANGUAGE SWITCHER
========================= */

.language-switcher {
  position: relative;
}

.language-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.language-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 130px;
  padding: 8px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(22, 57, 101, 0.12);
  box-shadow: 0 18px 42px rgba(28, 58, 102, 0.14);
  display: grid;
  gap: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition:
    opacity 0.25s ease,
    visibility 0.25s ease,
    transform 0.25s ease;
  z-index: 100;
}

.language-switcher.is-open .language-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.language-menu button {
  width: 100%;
  border: none;
  border-radius: 11px;
  padding: 10px 12px;
  background: transparent;
  color: #263b5c;
  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition:
    background 0.25s ease,
    color 0.25s ease;
}

.language-menu button:hover,
.language-menu button.active {
  color: #1c76d2;
  background: rgba(28, 118, 210, 0.08);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;

  border: 0;
  background: transparent;

  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;

  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 23px;
  height: 2px;

  background: #12233f;
  border-radius: 999px;

  transition:
    transform 0.25s ease,
    opacity 0.25s ease;
}