.site-header {
  position: relative;
  z-index: 1000;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border-bottom: 1px solid #E2E8F0;
  box-shadow: 0 4px 6px -1px rgba(30, 41, 59, 0.1), 0 2px 4px -2px rgba(30, 41, 59, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.site-header__inner {
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  flex-shrink: 0;
}

.site-header__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: Georgia, serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: #1E293B;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 0.75rem;
  background: transparent;
  border: 1px solid #E2E8F0;
  box-shadow: 0 1px 2px rgba(30, 41, 59, 0.05);
  transition: background-color 200ms ease-in-out, border-color 200ms ease-in-out;
}

.site-header__toggle:hover {
  background-color: rgba(255, 255, 255, 0.5);
  border-color: #CBD5E1;
}

.site-header__toggle:focus-visible {
  outline: 2px solid #06B6D4;
  outline-offset: 2px;
}

.site-header__toggle[aria-expanded="true"] {
  background-color: rgba(6, 182, 212, 0.1);
  border-color: rgba(6, 182, 212, 0.3);
}

.site-header__toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #1E293B;
  border-radius: 1px;
  transition: transform 200ms ease-in-out, opacity 200ms ease-in-out;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2) {
  opacity: 0;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header__nav {
  display: flex;
  align-items: center;
  min-width: 0;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__nav-item {
  margin: 0;
  padding: 0;
  flex-shrink: 0;
}

.site-header__nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.25rem 0;
  font-size: 1rem;
  font-weight: 500;
  color: #1E293B;
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  transition: color 200ms ease-in-out;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background-color: #06B6D4;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms ease-in-out;
}

.site-header__nav-link:hover {
  color: #0891B2;
}

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

.site-header__nav-link:focus-visible {
  outline: 2px solid #06B6D4;
  outline-offset: 2px;
  border-radius: 0.25rem;
}

.site-header__nav-link--button {
  padding: 0.5rem 1.25rem;
  border-radius: 1rem;
  background: linear-gradient(180deg, #06B6D4 0%, #0891B2 100%);
  color: #FFFFFF;
  border: 1px solid #0891B2;
  box-shadow: 0 4px 6px -1px rgba(30, 41, 59, 0.1), 0 2px 4px -2px rgba(30, 41, 59, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

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

.site-header__nav-link--button:hover {
  background: linear-gradient(180deg, #0891B2 0%, #0E7490 100%);
  color: #FFFFFF;
}

@media (max-width: 63.9375rem) {
  .site-header__inner {
    padding-inline: 1rem;
  }

  .site-header__logo {
    width: 40px;
    height: 40px;
  }

  .site-header__brand-text {
    font-size: 1.125rem;
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(85vw, 320px);
    max-width: 100%;
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
    border-left: 1px solid #E2E8F0;
    box-shadow: -4px 0 6px -1px rgba(30, 41, 59, 0.1), -2px 0 4px -2px rgba(30, 41, 59, 0.1);
    padding: 1.5rem;
    transform: translateX(100%);
    transition: transform 200ms ease-in-out;
    z-index: 1001;
    overflow-y: auto;
    display: block;
  }

  .site-header__nav.is-open {
    transform: translateX(0);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  .site-header__nav-item {
    flex-shrink: 1;
  }

  .site-header__nav-link {
    display: flex;
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    min-height: 44px;
  }

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

  .site-header__nav-link:hover {
    background-color: rgba(6, 182, 212, 0.05);
  }

  .site-header__nav-link--button {
    justify-content: center;
    margin-top: 0.5rem;
  }
}

@media (min-width: 64rem) {
  .site-header__inner {
    padding-inline: 2.5rem;
  }
}

@media (min-width: 72rem) {
  .site-header__inner {
    padding-inline: 4rem;
  }
}