.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(20, 59, 64, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border-inverse);
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header--scrolled {
  background-color: rgba(20, 59, 64, 0.96);
  box-shadow: 0 8px 24px rgba(15, 26, 28, 0.24);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: var(--header-height);
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.site-logo__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  overflow: hidden;
  border-radius: 50%;
  background-color: var(--color-white);
}

.site-logo__badge img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  transform: scale(1.08);
}

.site-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.site-logo__name {
  font-family: var(--font-heading);
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--color-text-inverse);
}

.site-logo__tagline {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-inverse-muted);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.site-nav__link {
  position: relative;
  padding-block: var(--space-2);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-inverse-muted);
  transition: color var(--transition-base);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--color-text-inverse);
}

.site-nav__link:hover::after,
.site-nav__link.is-active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-inverse);
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background-color: currentColor;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
}

.nav-toggle__bars::before {
  transform: translateY(-8px);
}

.nav-toggle__bars::after {
  transform: translateY(8px);
}

.nav-toggle.is-open .nav-toggle__bars {
  background-color: transparent;
}

.nav-toggle.is-open .nav-toggle__bars::before {
  transform: rotate(45deg);
}

.nav-toggle.is-open .nav-toggle__bars::after {
  transform: rotate(-45deg);
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: inline-flex;
    position: relative;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
    padding: var(--space-6) var(--container-padding) var(--space-8);
    background-color: var(--color-petrol-deep);
    border-bottom: 1px solid var(--color-border-inverse);
    box-shadow: 0 16px 32px rgba(15, 26, 28, 0.28);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity var(--transition-base), transform var(--transition-base),
      visibility var(--transition-base);
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    display: block;
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--color-border-inverse);
    font-size: 1.05rem;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__action {
    width: 100%;
  }
}

@media (max-width: 420px) {
  .site-logo__tagline {
    display: none;
  }
}