/* Header Component Styles */
.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-concrete-grey);
  border-bottom: var(--border-thin);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-3) var(--container-padding);
  min-height: 72px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-deep-espresso);
  flex-shrink: 0;
}

.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: var(--weight-h2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1;
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.site-header__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-deep-espresso);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 1;
  min-width: 0;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  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-block;
  padding: var(--space-2) 0;
  font-family: var(--font-heading);
  font-size: var(--text-small);
  font-weight: var(--weight-h2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-deep-espresso);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  transition: color var(--transition-fast);
}

.site-header__nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-electric-cobalt);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

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

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

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

.site-header__cta {
  white-space: nowrap;
}

.site-header__terminology {
  margin: 0;
  padding: var(--space-2) var(--container-padding);
  background-color: var(--color-deep-espresso);
  color: var(--color-off-white);
  font-family: var(--font-heading);
  font-size: var(--text-caption);
  font-weight: var(--weight-caption);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Mobile Navigation */
@media (max-width: 1024px) {
  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background-color: var(--color-concrete-grey);
    border-bottom: var(--border-thin);
    padding: var(--space-3) var(--container-padding);
    max-height: calc(100vh - 100%);
    overflow-y: auto;
    display: none;
    z-index: 999;
  }

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

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .site-header__nav-item {
    border-bottom: var(--border-concrete);
  }

  .site-header__nav-item:last-child {
    border-bottom: none;
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-3) 0;
    font-size: var(--text-h3);
    letter-spacing: 0.05em;
  }

  .site-header__actions {
    margin-top: var(--space-4);
    width: 100%;
  }

  .site-header__cta {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .site-header__inner {
    padding: var(--space-2) var(--container-padding);
    min-height: 64px;
  }

  .site-header__logo {
    width: 36px;
    height: 36px;
  }

  .site-header__brand-text {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .site-header__brand-text {
    display: none;
  }
}