.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: var(--header-height);
}

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

.site-header__logo-icon {
  display: block;
  height: 36px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__logo-text {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
}

.site-header__menu {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
}

.site-header__link {
  font-size: 0.9375rem;
  font-weight: 400;
  white-space: nowrap;
  transition: opacity var(--transition-fast);
}

.site-header__link:hover,
.site-header__link:focus-visible {
  opacity: 0.65;
}

.site-header__search {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-text);
  transition: opacity var(--transition-fast);
}

.site-header__search:hover,
.site-header__search:focus-visible {
  opacity: 0.65;
}

.site-header__search svg {
  width: 20px;
  height: 20px;
}

/* Mobile toggle */
.site-header__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text);
}

.site-header__toggle-icon {
  position: relative;
  width: 22px;
  height: 2px;
  background: currentColor;
  transition: background var(--transition-fast);
}

.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition-base);
}

.site-header__toggle-icon::before {
  top: -7px;
}

.site-header__toggle-icon::after {
  top: 7px;
}

.site-header.is-open .site-header__toggle-icon {
  background: transparent;
}

.site-header.is-open .site-header__toggle-icon::before {
  transform: translateY(7px) rotate(45deg);
}

.site-header.is-open .site-header__toggle-icon::after {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile navigation */
@media (max-width: 1024px) {
  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1.5rem var(--container-padding) 2rem;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition:
      transform var(--transition-base),
      opacity var(--transition-base),
      visibility var(--transition-base);
    overflow-y: auto;
  }

  .site-header.is-open .site-header__nav {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  .site-header__menu {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    width: 100%;
  }

  .site-header__link {
    display: block;
    width: 100%;
    padding: 1rem 0;
    font-size: 1.125rem;
    border-bottom: 1px solid var(--color-border);
  }

  .site-header__search {
    margin-top: 1.5rem;
    width: auto;
    height: auto;
    justify-content: flex-start;
    gap: 0.75rem;
    font-size: 1.125rem;
  }

  .site-header__search::after {
    content: "Search";
  }
}

@media (max-width: 480px) {
  .site-header__logo-text {
    font-size: 1.0625rem;
  }

  .site-header__logo-icon {
    height: 32px;
  }
}