/* ===== Header ===== */
.site-header {
  position: relative;
  z-index: 100;
  background-color: var(--color-nuit-profonde);
  border-bottom: 1px solid var(--color-bordure-fine);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  width: 100%;
  max-width: var(--container-grid);
  margin-inline: auto;
  padding-inline: var(--gutter-mobile);
  min-height: 4rem;
}

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

.site-header__brand:hover {
  color: var(--color-texte-principal);
  text-decoration: none;
}

.site-header__logo {
  width: 2rem;
  height: 2rem;
  object-fit: contain;
  display: block;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.2;
  white-space: nowrap;
}

.site-header__nav {
  display: none;
}

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

.site-header__nav-list li {
  margin: 0;
  padding: 0;
}

.site-header__nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0;
  color: var(--color-texte-secondaire);
  font-size: var(--text-small-size);
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-header__nav-list a:hover {
  color: var(--color-framboise-action);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.site-header__toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.site-header__toggle-line {
  display: block;
  width: 1.375rem;
  height: 2px;
  background-color: var(--color-texte-principal);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast), background-color var(--transition-fast);
}

.site-header__toggle:hover .site-header__toggle-line {
  background-color: var(--color-framboise-action);
}

.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__toggle:focus-visible {
  outline: var(--focus-outline-width) solid var(--focus-outline-color);
  outline-offset: var(--focus-outline-offset);
}

/* Mobile menu open state */
.site-header__nav.is-open {
  display: block;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-nuit-profonde);
  border-bottom: 1px solid var(--color-bordure-fine);
  box-shadow: var(--shadow-floating);
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
  padding: var(--space-16) var(--gutter-mobile) var(--space-24);
}

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

.site-header__nav.is-open .site-header__nav-list a {
  display: flex;
  width: 100%;
  min-height: 2.75rem;
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-sm);
  color: var(--color-texte-principal);
  font-size: var(--text-body-size);
  font-weight: 500;
}

.site-header__nav.is-open .site-header__nav-list a:hover {
  background-color: var(--color-prune-surface);
  color: var(--color-framboise-action);
  text-decoration: none;
}

@media (min-width: 48rem) {
  .site-header__inner {
    padding-inline: var(--gutter-desktop);
    min-height: 4.5rem;
  }

  .site-header__logo {
    width: 2rem;
    height: 2rem;
  }

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

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    display: block;
  }

  .site-header__nav.is-open {
    display: block;
    position: static;
    background: none;
    border: none;
    box-shadow: none;
    max-height: none;
    overflow: visible;
    padding: 0;
  }

  .site-header__nav.is-open .site-header__nav-list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-24);
  }

  .site-header__nav.is-open .site-header__nav-list a {
    display: inline-flex;
    width: auto;
    min-height: 2.75rem;
    padding: 0;
    border-radius: 0;
    color: var(--color-texte-secondaire);
    font-size: var(--text-small-size);
    font-weight: 500;
  }

  .site-header__nav.is-open .site-header__nav-list a:hover {
    background: none;
    color: var(--color-framboise-action);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.2em;
  }
}