.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  border-bottom: 1px solid rgba(184, 115, 77, 0.55);
  background: rgba(17, 20, 22, 0.97);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.28);
}

.site-header__inner {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  gap: 1.25rem;
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  flex: 0 1 auto;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-ivory);
  text-decoration: none;
}

.site-header__mark {
  width: 2.375rem;
  height: 2.375rem;
  flex: 0 0 2.375rem;
  object-fit: contain;
}

.site-header__brand-copy {
  display: grid;
  min-width: 0;
  gap: 0.05rem;
  line-height: 1;
}

.site-header__name {
  color: var(--color-ivory);
  font-family: var(--font-heading);
  font-size: 1.5625rem;
  font-weight: 600;
  line-height: 0.95;
  white-space: nowrap;
}

.site-header__subtitle {
  color: var(--color-ash);
  font-family: var(--font-body);
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.25;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-navigation {
  min-width: 0;
  margin-left: auto;
}

.site-navigation__list {
  display: flex;
  align-items: center;
  gap: clamp(0.65rem, 1.5vw, 1.25rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-navigation__item,
.site-navigation__item + .site-navigation__item {
  margin: 0;
  padding: 0;
}

.site-navigation__item--mobile {
  display: none;
}

.site-navigation__link {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  border-bottom: 2px solid transparent;
  color: var(--color-white);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.site-navigation__link:hover,
.site-navigation__link:focus-visible {
  border-bottom-color: var(--color-copper);
  color: var(--color-ivory);
}

.site-navigation__link[aria-current="page"] {
  border-bottom-color: var(--color-amber);
  color: var(--color-amber);
}

.site-navigation__link--contact {
  padding-inline: 0.75rem;
  border: 1px solid var(--color-copper);
  background: transparent;
}

.site-navigation__link--contact:hover,
.site-navigation__link--contact:focus-visible,
.site-navigation__link--contact[aria-current="page"] {
  border-color: var(--color-amber);
  background: var(--color-amber);
  color: var(--color-canvas);
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 2.75rem;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  margin-left: auto;
  padding: 0.5rem;
  border: 1px solid var(--color-copper);
  border-radius: 0;
  background: transparent;
  color: var(--color-ivory);
}

.nav-toggle__line {
  display: block;
  width: 1.25rem;
  height: 1px;
  background: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--color-amber);
  color: var(--color-amber);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: translateY(0.34rem) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: translateY(-0.34rem) rotate(-45deg);
}

@media (max-width: 980px) {
  .site-header__inner {
    min-height: 4rem;
  }

  .site-header__mark {
    width: 1.875rem;
    height: 1.875rem;
    flex-basis: 1.875rem;
  }

  .site-header__name {
    font-size: 1.25rem;
  }

  .site-header__subtitle {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-navigation {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    border-bottom: 1px solid var(--color-copper);
    background: var(--color-surface);
    box-shadow: var(--shadow-panel);
  }

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

  .site-navigation__list {
    display: grid;
    gap: 0;
    width: min(100% - (var(--gutter) * 2), var(--container-max));
    margin: 0 auto;
    padding: 0.75rem 0 1rem;
  }

  .site-navigation__item--mobile {
    display: block;
  }

  .site-navigation__link,
  .site-navigation__link--contact {
    width: 100%;
    min-height: 3rem;
    justify-content: flex-start;
    padding: 0.875rem 0;
    border-width: 0 0 1px;
    border-color: rgba(184, 115, 77, 0.42);
    background: transparent;
  }

  .site-navigation__link--contact:hover,
  .site-navigation__link--contact:focus-visible,
  .site-navigation__link--contact[aria-current="page"] {
    background: transparent;
    color: var(--color-amber);
  }
}

@media (max-width: 639px) {
  .site-navigation__list {
    width: min(100% - (var(--gutter-mobile) * 2), var(--container-max));
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-toggle__line,
  .site-navigation__link {
    transition: none;
  }
}

.nav-toggle { flex-direction: column; }