@layer components {
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-graphite);
    border-bottom: 1px solid var(--color-border-default);
    height: var(--header-height-mobile);
    display: flex;
    align-items: center;
  }

  .site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: var(--space-md);
  }

  .site-header__brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
    min-width: 0;
  }

  .site-header__logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
    flex-shrink: 0;
  }

  .site-header__wordmark {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-bone);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .site-header__nav {
    display: none;
    flex: 1 1 auto;
    justify-content: flex-end;
  }

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

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

  .site-header__nav-link {
    display: inline-block;
    font-family: var(--font-body);
    font-size: var(--text-caption-size);
    line-height: var(--text-caption-line-height);
    letter-spacing: var(--text-caption-tracking);
    text-transform: uppercase;
    color: var(--color-ash);
    padding: var(--space-xs) 0;
    position: relative;
    transition: color var(--transition-color);
    white-space: nowrap;
  }

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

  .site-header__nav-link:focus-visible {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
    border-radius: var(--radius-2);
  }

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

  .site-header__nav-link[aria-current="page"]::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background-color: var(--color-gold);
    transition: transform var(--transition-color);
    transform: scaleX(1);
  }

  .site-header__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    margin: 0;
    background-color: transparent;
    border: 1px solid var(--color-border-elevated);
    border-radius: var(--radius-4);
    cursor: pointer;
    flex-shrink: 0;
    color: var(--color-bone);
    transition: background-color var(--transition-color), border-color var(--transition-color), color var(--transition-color);
  }

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

  .site-header__toggle:focus-visible {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
  }

  .site-header__toggle-box {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 22px;
    height: 16px;
    pointer-events: none;
    flex-shrink: 0;
  }

  .site-header__toggle-bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: currentColor;
    border-radius: 2px;
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1),
                background-color var(--transition-color);
    transform-origin: center;
  }

  .site-header__toggle[aria-expanded="true"] {
    background-color: var(--color-charcoal);
    border-color: var(--color-gold);
    color: var(--color-gold);
  }

  .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;
    transform: scaleX(0);
  }

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

  .site-header__nav-header {
    display: none;
  }

  @media (min-width: 1024px) {
    .site-header {
      height: var(--header-height-desktop);
    }

    .site-header__logo {
      width: 40px;
      height: 40px;
    }

    .site-header__wordmark {
      font-size: 0.78rem;
      letter-spacing: 0.18em;
    }

    .site-header__nav {
      display: flex;
    }

    .site-header__toggle {
      display: none;
    }
  }

  @media (max-width: 1023px) {
    body.menu-open {
      overflow: hidden;
    }

    .site-header__nav {
      position: fixed;
      top: var(--header-height-mobile);
      left: 0;
      right: 0;
      bottom: 0;
      background-color: var(--overlay-bg);
      backdrop-filter: blur(var(--overlay-blur));
      -webkit-backdrop-filter: blur(var(--overlay-blur));
      display: flex;
      flex-direction: column;
      justify-content: flex-start;
      padding: var(--space-lg) var(--gutter-mobile) var(--space-xl);
      overflow-y: auto;
      z-index: 999;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-12px);
      transition: opacity var(--transition-opacity), transform var(--transition-opacity), visibility 0s linear var(--transition-opacity);
    }

    .site-header__nav.is-open {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
      transition: opacity var(--transition-opacity), transform var(--transition-opacity);
    }

    .site-header__nav-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      padding-bottom: var(--space-md);
      margin-bottom: var(--space-sm);
      border-bottom: 1px solid var(--color-border-elevated);
      flex-shrink: 0;
    }

    .site-header__nav-title {
      font-family: var(--font-heading);
      font-size: 0.95rem;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--color-gold);
    }

    .site-header__nav-close {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 12px;
      font-family: var(--font-heading);
      font-size: 0.75rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--color-bone);
      background-color: var(--color-charcoal);
      border: 1px solid var(--color-border-elevated);
      border-radius: var(--radius-4);
      cursor: pointer;
      transition: background-color var(--transition-color),
                  border-color var(--transition-color),
                  color var(--transition-color);
    }

    .site-header__nav-close:hover,
    .site-header__nav-close:focus-visible {
      color: var(--color-gold);
      border-color: var(--color-gold);
      background-color: #262e36;
      outline: none;
    }

    .site-header__nav-close-icon {
      width: 14px;
      height: 14px;
      stroke: currentColor;
    }

    .site-header__nav-list {
      flex-direction: column;
      align-items: stretch;
      gap: var(--space-xs);
      width: 100%;
    }

    .site-header__nav-link {
      display: block;
      padding: var(--space-sm) var(--space-xs);
      font-size: var(--text-body-size);
      line-height: var(--text-body-line-height);
      letter-spacing: 0.04em;
      text-transform: uppercase;
      border-bottom: 1px solid var(--color-border-default);
      transition: color var(--transition-color), padding-left var(--transition-color);
    }

    .site-header__nav-link:hover {
      color: var(--color-gold);
      padding-left: var(--space-xs);
    }

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

    .site-header__nav-link[aria-current="page"]::after {
      display: none;
    }
  }
}