/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--color-ivory);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 8px rgba(44, 37, 34, 0.06);
}

.site-header__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding-mobile);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .site-header__inner {
    padding-inline: var(--container-padding-desktop);
    height: 88px;
  }
}

/* Brand */
.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-navy);
  flex-shrink: 0;
  min-width: 0;
}

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

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

@media (min-width: 768px) {
  .site-header__logo {
    width: 56px;
    height: 56px;
  }

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

/* Toggle button */
.site-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-base), border-color var(--transition-base);
  flex-shrink: 0;
}

.site-header__toggle:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

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

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

.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);
}

/* Navigation */
.site-header__nav {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background-color: var(--color-ivory);
  padding: var(--space-lg);
  overflow-y: auto;
  z-index: 999;
  display: none;
  border-top: 1px solid var(--color-border);
  box-shadow: 0 8px 16px rgba(44, 37, 34, 0.1);
}

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

.site-header__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.site-header__item {
  margin: 0;
}

.site-header__link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: var(--tracking-heading);
  color: var(--color-navy);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
}

.site-header__link:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  background-color: rgba(176, 138, 85, 0.05);
}

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

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

  .site-header__nav {
    position: static;
    display: block;
    padding: 0;
    overflow: visible;
    background: transparent;
    border: none;
    box-shadow: none;
    z-index: auto;
  }

  .site-header__list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-lg);
  }

  .site-header__link {
    padding: var(--space-xs) 0;
    font-size: 1rem;
    border-bottom: 2px solid transparent;
  }

  .site-header__link:hover {
    border-bottom-color: var(--color-accent);
    background-color: transparent;
  }
}

/* Collision prevention for fixed header */
body {
  padding-top: 72px;
}

@media (min-width: 768px) {
  body {
    padding-top: 88px;
  }
}

@media (min-width: 1024px) {
  body {
    padding-top: 88px;
  }
}