.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.site-header__inner {
  width: var(--container);
  margin: 0 auto;
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-brand {
  flex-shrink: 0;
  z-index: 1001;
}

.site-brand__link {
  display: block;
  line-height: 0;
}

.site-brand__logo {
  height: 55px;
  width: auto;
  display: block;
}

.site-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.site-nav__menu {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  align-items: center;
}

.site-nav__menu li {
  position: relative;
}

.site-nav__menu a {
  display: block;
  padding: 12px 20px;
  font-weight: 600;
  font-size: 18px;
  color: #1a1a1a;
  text-decoration: none;
  position: relative;
  transition: color 0.3s ease;
}

.site-nav__menu a::before {
  content: '';
  position: absolute;
  top: 5px;
  left: 50%;
  width: 0;
  height: 3px;
  background: #0057ad;
  transform: translateX(-50%);
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-nav__menu a:hover::before {
  width: 100%;
}

.site-nav__menu a:hover {
  color: #0057ad; 
}

.site-nav__menu .current-menu-item > a,
.site-nav__menu .current_page_item > a {
  color: #0057ad;
}

.site-nav__menu .current-menu-item > a::before,
.site-nav__menu .current_page_item > a::before {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  z-index: 1001;
  transition: gap 0.3s ease;
}

.nav-toggle__line {
  width: 28px;
  height: 3px;
  background: #0B1B70;
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

.nav-toggle[aria-expanded="true"] {
  gap: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: rotate(-45deg);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 76px; 
    left: 0;
    right: 0;
    background: #fff;
    height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.3s ease,
                visibility 0.3s ease,
                box-shadow 0.3s ease;
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
  }

  .nav-toggle[aria-expanded="true"] + .site-nav {
    height: auto;
    max-height: calc(100vh - 76px);
    opacity: 1;
    visibility: visible;
    overflow-y: auto;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  }

  .site-nav__menu {
    flex-direction: column;
    gap: 0;
    width: 100%;
    padding: 20px;
  }

  .site-nav__menu li {
    width: 100%;
    border-bottom: 1px solid #f0f0f0;
  }

  .site-nav__menu li:last-child {
    border-bottom: none;
  }

  .site-nav__menu a {
    padding: 16px 12px;
    width: 100%;
    font-size: 16px;
  }

  .site-nav__menu a::before {
    top: 50%;
    left: 0;
    width: 0;
    height: 100%;
    transform: translateY(-50%);
  }

  .site-nav__menu a:hover::before,
  .site-nav__menu .current-menu-item > a::before,
  .site-nav__menu .current_page_item > a::before {
    width: 4px;
    height: 100%;
  }

  .site-header__inner {
    padding: 14px 0;
  }

  .site-brand__logo {
    height: 36px;
  }
}

body:has(.nav-toggle[aria-expanded="true"]) {
  overflow: hidden;
}