/* Header component styles */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-surface-primary);
  border-bottom: 1px solid var(--color-border-light);
}

.site-header__inner {
  max-width: var(--container-main-max);
  margin-inline: auto;
  padding-inline: var(--container-main-padding-inline);
}

.site-header__upper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: var(--space-16);
}

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

.site-header__logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__wordmark {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1;
  color: var(--color-text-primary);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  flex-shrink: 0;
}

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

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  gap: 5px;
  border-radius: var(--radius-default);
  transition: background-color var(--transition-fast);
}

.site-header__toggle:hover {
  background-color: rgba(41, 42, 43, 0.06);
}

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

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  transform-origin: center;
}

.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__nav {
  display: block;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-24);
  list-style: none;
  padding: 0;
  margin: 0;
  min-height: 48px;
}

.site-header__nav-item {
  margin: 0;
  padding: 0;
}

.site-header__nav-link {
  display: inline-block;
  padding: var(--space-8) 0;
  font-family: var(--font-body);
  font-size: var(--text-small-size);
  line-height: var(--text-small-line-height);
  letter-spacing: var(--text-caption-letter-spacing);
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-text-primary);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background-color: var(--color-warm-light);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

.site-header__nav-link:hover {
  color: var(--color-warm-light);
}

.site-header__nav-link:hover::after,
.site-header__nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-header__nav-link[aria-current="page"] {
  color: var(--color-warm-light);
}

@media (max-width: 899px) {
  .site-header__upper {
    min-height: 56px;
  }

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

  .site-header__wordmark {
    font-size: 1.125rem;
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    max-width: 100%;
    background-color: var(--color-surface-dark);
    color: var(--color-text-on-dark);
    transform: translateX(100%);
    transition: transform 250ms ease-out;
    z-index: 1001;
    overflow-y: auto;
    padding: var(--space-24);
    box-shadow: -8px 0 24px rgba(41, 42, 43, 0.2);
  }

  .site-header__nav.is-open {
    transform: translateX(0);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-8);
    min-height: auto;
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-12) var(--space-16);
    font-size: var(--text-body-large-size);
    letter-spacing: 0.02em;
    text-transform: none;
    color: var(--color-text-on-dark);
    border-radius: var(--radius-default);
    transition: background-color var(--transition-fast), color var(--transition-fast);
  }

  .site-header__nav-link::after {
    display: none;
  }

  .site-header__nav-link:hover {
    background-color: rgba(242, 235, 221, 0.08);
    color: var(--color-warm-light);
  }

  .site-header__nav-link[aria-current="page"] {
    color: var(--color-warm-light);
    background-color: rgba(242, 235, 221, 0.08);
  }
}

@media (min-width: 900px) {
  .site-header__nav {
    display: block;
  }
}