@layer components {
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    background-color: rgba(14, 16, 20, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: var(--border-champagne-hairline);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
    transition: background-color var(--transition-standard), box-shadow var(--transition-standard);
  }

  .site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: clamp(0.75rem, 1.5vw, var(--space-md));
    min-height: var(--header-height, 72px);
    padding-block: var(--space-xs);
    width: 100%;
    max-width: var(--container-wide);
    margin-inline: auto;
    padding-inline: var(--gutter-mobile);
  }

  @media (min-width: 48rem) {
    .site-header__inner {
      padding-inline: var(--gutter-tablet);
    }
  }

  @media (min-width: 75rem) {
    .site-header__inner {
      padding-inline: var(--gutter-desktop);
    }
  }

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

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

  .site-header__brand-text {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--color-platinum);
    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: 1px solid var(--color-mineral-slate);
    border-radius: var(--radius-sm);
    cursor: pointer;
    flex-shrink: 0;
    margin-left: auto;
  }

  .site-header__toggle-line {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--color-platinum);
    transition: transform var(--transition-standard), opacity var(--transition-standard);
  }

  .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: flex;
    align-items: center;
    gap: clamp(0.75rem, 1.5vw, var(--space-xl));
    margin-left: auto;
    min-width: 0;
  }

  .site-header__nav-list {
    display: flex;
    align-items: center;
    gap: clamp(0.5rem, 1vw, 1.25rem);
    margin: 0;
    padding: 0;
    list-style: none;
  }

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

  .site-header__nav-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 4px;
    font-size: var(--text-label-size);
    font-weight: var(--text-label-weight);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-platinum);
    white-space: nowrap;
    position: relative;
    transition: color var(--transition-standard);
  }

  .site-header__nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 8px;
    width: 100%;
    height: 2px;
    background-color: var(--color-copper);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-standard);
  }

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

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

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

  .site-header__action-link {
    min-height: 42px;
    padding: 0.5rem 1rem;
    font-size: var(--text-label-size);
    font-weight: 600;
    letter-spacing: var(--text-label-tracking);
    text-transform: uppercase;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
  }

  .site-header__action-link--secondary {
    display: none;
  }

  @media (min-width: 87.5rem) {
    .site-header__action-link--secondary {
      display: inline-flex;
    }
  }

  .site-header__action-text-short {
    display: inline;
  }

  .site-header__action-text-full {
    display: none;
  }

  @media (min-width: 80rem) {
    .site-header__action-text-short {
      display: none;
    }
    .site-header__action-text-full {
      display: inline;
    }
  }

  /* Tablet and mobile: <= 1080px (67.5rem) switches to luxury drawer */
  @media (max-width: 67.5rem) {
    .site-header__toggle {
      display: flex;
    }

    .site-header__nav {
      position: fixed;
      top: var(--header-height, 72px);
      right: 0;
      bottom: 0;
      width: min(100%, 24rem);
      max-width: 100%;
      background-color: var(--color-basalt);
      border-left: var(--border-champagne-hairline);
      flex-direction: column;
      align-items: stretch;
      justify-content: flex-start;
      gap: var(--space-lg);
      padding: var(--space-xl);
      overflow-y: auto;
      transform: translateX(100%);
      visibility: hidden;
      transition: transform var(--transition-cinematic), visibility var(--transition-cinematic);
      z-index: var(--z-overlay);
      box-shadow: -10px 0 30px rgba(0, 0, 0, 0.7);
    }

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

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

    .site-header__nav-link {
      min-height: 48px;
      padding: var(--space-xs) 0;
      font-size: 1rem;
      letter-spacing: 0.04em;
    }

    .site-header__nav-link::after {
      bottom: 4px;
    }

    .site-header__actions {
      flex-direction: column;
      align-items: stretch;
      gap: var(--space-sm);
      margin-top: auto;
      padding-top: var(--space-lg);
      border-top: var(--border-champagne-hairline);
    }

    .site-header__action-link {
      width: 100%;
      min-height: 48px;
      justify-content: center;
    }

    .site-header__action-link--secondary {
      display: flex;
    }

    .site-header__action-text-short {
      display: none;
    }

    .site-header__action-text-full {
      display: inline;
    }
  }

  @media (max-width: 47.9375rem) {
    .site-header__inner {
      min-height: 64px;
      padding-block: var(--space-2xs);
    }

    .site-header__logo {
      width: 30px;
      height: 30px;
    }

    .site-header__brand-text {
      font-size: 0.9375rem;
    }

    .site-header__nav {
      top: 64px;
    }
  }
}