.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--gray-900);
}

.site-header__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 20%, #e0f3ff, #0f89c9);
  box-shadow: var(--shadow-sm);
}

.site-header__logo-mark {
  font-family: "Playfair Display", var(--font-serif);
  font-size: 1.25rem;
  color: #ffffff;
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-header__brand-title {
  font-family: "Playfair Display", var(--font-serif);
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.site-header__brand-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.site-header__nav {
  display: flex;
  align-items: center;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
}

.site-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-700);
  padding: 0.25rem 0;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after {
  width: 100%;
}

.site-header__nav-item--cta .site-header__nav-link--cta {
  padding: 0.4rem 0.95rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.site-header__nav-item--cta .site-header__nav-link--cta::after {
  display: none;
}

.site-header__nav-item--cta .site-header__nav-link--cta:hover,
.site-header__nav-item--cta .site-header__nav-link--cta:focus-visible {
  background-color: var(--color-primary-dark);
}

.site-header__toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 38px;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  background-color: #ffffff;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 5px;
}

.site-header__toggle-bar {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-800);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-header__toggle:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.site-header__toggle--open .site-header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__toggle--open .site-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header__toggle--open .site-header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .site-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: #ffffff;
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
    box-shadow: var(--shadow-sm);
    transform-origin: top;
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3) var(--space-4) var(--space-4);
  }

  .site-header__nav-link {
    width: 100%;
    padding: 0.4rem 0;
  }

  .site-header__nav-item--cta {
    width: 100%;
  }

  .site-header__nav-item--cta .site-header__nav-link--cta {
    width: 100%;
    text-align: center;
  }

  .site-header__nav {
    max-height: 0;
    opacity: 0;
    pointer-events: none;
    transition: max-height var(--transition-slow), opacity var(--transition-base);
  }

  .site-header__nav--open {
    max-height: 320px;
    opacity: 1;
    pointer-events: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__nav {
    transition: none;
  }

  .site-header__toggle-bar {
    transition: none;
  }
}