.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-encre-profonde);
  border-bottom: 1px solid var(--color-ardoise);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-24);
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-margin-mobile);
  min-height: 64px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  text-decoration: none;
  color: var(--color-ivoire);
  flex-shrink: 0;
  min-width: 0;
}

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

.site-header__logo {
  display: block;
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-ardoise);
  border-radius: var(--radius-small);
  cursor: pointer;
  color: var(--color-ivoire);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  flex-shrink: 0;
}

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

.site-header__toggle:focus-visible {
  outline: var(--border-focus);
  outline-offset: var(--border-focus-offset);
}

.site-header__toggle[aria-expanded="true"] {
  background-color: rgba(232, 163, 61, 0.1);
  border-color: var(--color-ambre-atelier);
}

.site-header__toggle-icon,
.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  display: block;
  width: 20px;
  height: 2px;
  background-color: currentColor;
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle-icon {
  position: relative;
}

.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.site-header__toggle-icon::before {
  top: -6px;
}

.site-header__toggle-icon::after {
  top: 6px;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon {
  background-color: transparent;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::before {
  transform: translateY(6px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::after {
  transform: translateY(-6px) rotate(-45deg);
}

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

.site-header__list {
  display: flex;
  align-items: center;
  gap: var(--space-24);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__item {
  margin: 0;
  padding: 0;
}

.site-header__link {
  display: inline-block;
  padding-block: var(--space-8);
  color: var(--color-ivoire);
  font-family: var(--font-body);
  font-size: var(--text-body-size);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast);
  position: relative;
}

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

.site-header__link:hover {
  color: var(--color-ambre-atelier);
}

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

.site-header__link:focus-visible {
  outline: var(--border-focus);
  outline-offset: var(--border-focus-offset);
  border-radius: var(--radius-small);
}

@media (max-width: 1023px) {
  .site-header__inner {
    padding-inline: var(--container-margin-mobile);
  }

  .site-header__brand-text {
    font-size: 16px;
  }

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

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

  .site-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-encre-profonde);
    border-bottom: 1px solid var(--color-ardoise);
    box-shadow: var(--surface-menu-shadow);
    padding: var(--space-16) var(--container-margin-mobile) var(--space-24);
    display: none;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    z-index: 999;
  }

  .site-header__nav.is-open {
    display: block;
  }

  .site-header__list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
  }

  .site-header__item {
    width: 100%;
  }

  .site-header__link {
    display: block;
    padding: var(--space-12) var(--space-16);
    border-radius: var(--radius-small);
    transition: background-color var(--transition-fast), color var(--transition-fast);
  }

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

  .site-header__link:hover {
    background-color: rgba(232, 163, 61, 0.1);
    color: var(--color-ambre-atelier);
  }
}

@media (min-width: 1024px) {
  .site-header__inner {
    padding-inline: var(--container-margin-desktop);
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    display: flex;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__toggle-icon,
  .site-header__toggle-icon::before,
  .site-header__toggle-icon::after,
  .site-header__link::after {
    transition: none;
  }
}