.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
}

.admin-bar .site-header { top: 32px; }

@media screen and (max-width: 782px) {
  .admin-bar .site-header { top: 0; }
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background-color: var(--c-bg);
  border-bottom: 1px solid var(--c-line);
  will-change: opacity;
}

.site-header--transparent::before {
  opacity: 0;
  transition: opacity 0.12s ease;
}

.site-header--transparent.is-scrolled::before { opacity: 1; }

body.nav-open .site-header--transparent::before { opacity: 1; }

.site-header__inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  min-height: var(--header-h);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
  margin-right: var(--sp-12);
}

.site-logo__image {
  height: 40px;
  width: auto;
}

.site-logo__mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.site-logo__text {
  font-family: var(--font-display);
  line-height: 1.05;
}
.site-logo__text b {
  display: block;
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--c-text);
}
.site-logo__text span {
  display: block;
  margin-top: 2px;
  font-weight: 700;
  font-size: 0.6875rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
}

.site-nav__list a {
  display: block;
  padding: var(--sp-2) 0;
  font-size: var(--fs-tiny);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.15s ease;
}
.site-nav__list a:hover { color: var(--c-text); }

.site-nav__label {
  border-bottom: 2px solid transparent;
  padding-bottom: 5px;
  transition: border-color 0.15s ease;
}

.site-nav__list .current-menu-item > a,
.site-nav__list .current_page_item > a {
  color: var(--c-accent);
}
.site-nav__list .current-menu-item > a .site-nav__label,
.site-nav__list .current_page_item > a .site-nav__label {
  border-bottom-color: var(--c-accent);
}

.site-nav__socials { display: none; }

.social-links {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}
.social-links a {
  display: flex;
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.15s ease;
}
.social-links a:hover { color: var(--c-accent); }
.social-links svg { width: 18px; height: 18px; }

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  margin-left: auto;
}

.site-header .btn {
  padding: 0.5rem 1.125rem;
  line-height: 1.2;
  border-radius: 4px;
  font-size: var(--fs-tiny);
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.site-nav { min-width: 0; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  margin-left: auto;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--c-text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
}
.nav-toggle__bars::before { transform: translateY(-7px); }
.nav-toggle__bars::after  { transform: translateY(7px); }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background-color: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { transform: rotate(-45deg); }

@media (max-width: 1220px) {
  .site-header__actions .social-links { display: none; }
  .site-header__actions { gap: 0; }
  .site-logo { margin-right: var(--sp-8); }
  .site-nav__list { gap: var(--sp-6); }
}

@media (max-width: 1120px) {
  .site-header .btn { padding: 0.5rem 0.875rem; }
}

@media (max-width: 1080px) {
  .nav-toggle { display: flex; position: relative; margin-left: auto; }

  .site-logo { margin-right: 0; }

  .site-nav {
    position: absolute;
    top: calc(100% - 1px);
    left: 0;
    right: 0;
    z-index: 0;
    background-color: var(--c-bg);
    border-bottom: 1px solid var(--c-line);

    display: grid;
    grid-template-rows: 0fr;
    visibility: hidden;
    transition: grid-template-rows 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s linear 0.3s;
  }

  .site-nav.is-open {
    grid-template-rows: 1fr;
    visibility: visible;
    transition: grid-template-rows 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s;
  }

  .site-nav__panel {
    overflow: hidden;
    min-height: 0;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--sp-2) var(--gutter) var(--sp-6);

    max-height: calc(100dvh - var(--header-h) - 5rem);
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .admin-bar .site-nav__list {
    max-height: calc(100dvh - var(--header-h) - 5rem - 46px);
  }

  .site-nav__list li { width: 100%; }

  .site-nav__list a {
    padding: 0.875rem 0;
    font-size: 0.9375rem;
    letter-spacing: 0.06em;
  }
  .site-nav__label { padding-bottom: 3px; }

  .site-header__actions { display: none; }

  .site-nav__socials {
    display: flex;
    padding: var(--sp-3) var(--gutter) var(--sp-6) calc(var(--gutter) - var(--sp-2));
    border-top: 1px solid var(--c-line);
  }

  .site-nav__socials .social-links { gap: var(--sp-3); }
  .site-nav__socials .social-links a { padding: var(--sp-2); }
  .site-nav__socials .social-links svg { width: 22px; height: 22px; }

  body.nav-open { overflow: hidden; }
}