.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-petrol);
  color: var(--color-text-inverse);
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(90deg, var(--color-saffron) 0%, var(--color-petrol) 50%, var(--color-saffron) 100%) 1;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-3) var(--container-gutter-mobile);
  min-height: 64px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-inverse);
  text-decoration: none;
  flex-shrink: 0;
}

.site-header__brand:hover {
  color: var(--color-saffron);
}

.site-header__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  display: block;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid rgba(245, 240, 230, 0.3);
  border-radius: var(--radius-1);
  cursor: pointer;
  transition: border-color var(--transition-color), background-color var(--transition-color);
}

.site-header__toggle:hover {
  border-color: var(--color-saffron);
  background-color: rgba(232, 163, 61, 0.1);
}

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

.site-header__toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-inverse);
  border-radius: 1px;
  transition: transform var(--transition-layout), opacity var(--transition-layout);
}

.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;
}

.site-header__nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.site-header__nav-item + .site-header__nav-item {
  margin: 0;
}

.site-header__nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: var(--space-2) var(--space-1);
  color: var(--color-text-inverse);
  text-decoration: none;
  font-size: var(--text-small-size);
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  transition: color var(--transition-color);
  position: relative;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background-color: var(--color-saffron);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-color);
}

.site-header__nav-link:hover {
  color: var(--color-saffron);
}

.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 var(--color-focus);
  outline-offset: 2px;
}

.site-header__edge {
  height: 3px;
  background: linear-gradient(90deg, var(--color-saffron) 0%, var(--color-petrol) 50%, var(--color-saffron) 100%);
  width: 100%;
}

@media (min-width: 768px) {
  .site-header__inner {
    padding: var(--space-4) var(--container-gutter-desktop);
    min-height: 72px;
  }

  .site-header__logo {
    width: 56px;
    height: 56px;
  }

  .site-header__brand-text {
    font-size: 1.5rem;
  }

  .site-header__nav-list {
    gap: var(--space-5);
  }
}

@media (max-width: 1023px) {
  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-petrol);
    border-bottom: 3px solid transparent;
    border-image: linear-gradient(90deg, var(--color-saffron) 0%, var(--color-petrol) 50%, var(--color-saffron) 100%) 1;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-layout);
    z-index: 999;
  }

  .site-header__nav.is-open {
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4);
  }

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

  .site-header__nav-link {
    display: flex;
    width: 100%;
    padding: var(--space-3) var(--space-2);
    font-size: var(--text-body-size);
    border-bottom: 1px solid rgba(245, 240, 230, 0.1);
  }

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

@media (min-width: 1024px) {
  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    position: static;
    max-height: none;
    overflow: visible;
  }

  .site-header__nav-list {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: var(--space-4);
  }

  .site-header__nav-link {
    font-size: var(--text-small-size);
  }
}