@layer components {
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-warm-white);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: 0 2px 8px rgba(48, 52, 58, 0.04);
  }

  .site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    max-width: var(--container-standard);
    margin-inline: auto;
    padding-inline: var(--page-padding-mobile);
    min-height: 4.5rem;
  }

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

  .site-header__logo {
    width: 2.75rem;
    height: 2.75rem;
    object-fit: contain;
    flex-shrink: 0;
  }

  .site-header__wordmark {
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-deep-graphite);
    white-space: nowrap;
  }

  .site-header__nav {
    display: none;
  }

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

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

  .site-header__nav-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2xs);
    font-family: var(--font-body);
    font-size: var(--text-small-size);
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--color-deep-graphite);
    text-decoration: none;
    padding-block: var(--space-sm);
    transition: color var(--transition-fast);
    white-space: nowrap;
  }

  .site-header__nav-link:hover,
  .site-header__nav-link:focus-visible {
    color: var(--color-copper-accent);
  }

  .site-header__nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0.25rem;
    width: 0;
    height: 1px;
    background-color: var(--color-copper-accent);
    transition: width var(--transition-base);
  }

  .site-header__nav-link:hover::after,
  .site-header__nav-link:focus-visible::after {
    width: 100%;
  }

  .site-header__nav-item--has-dropdown .site-header__nav-link {
    padding-inline-end: var(--space-md);
  }

  .site-header__nav-item--has-dropdown .site-header__nav-link::before {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    width: 0.5rem;
    height: 0.5rem;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: translateY(-70%) rotate(45deg);
    transition: transform var(--transition-base);
  }

  .site-header__nav-item--has-dropdown:hover .site-header__nav-link::before,
  .site-header__nav-item--has-dropdown:focus-within .site-header__nav-link::before {
    transform: translateY(-30%) rotate(225deg);
  }

  .site-header__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 14rem;
    background-color: var(--color-warm-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-default);
    box-shadow: var(--shadow-card);
    padding: var(--space-sm);
    list-style: none;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(0.5rem);
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
    z-index: 1001;
  }

  .site-header__nav-item--has-dropdown:hover .site-header__dropdown,
  .site-header__nav-item--has-dropdown:focus-within .site-header__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-header__dropdown-link {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-small-size);
    font-weight: 400;
    color: var(--color-deep-graphite);
    text-decoration: none;
    border-radius: var(--radius-default);
    transition: background-color var(--transition-fast), color var(--transition-fast);
  }

  .site-header__dropdown-link:hover,
  .site-header__dropdown-link:focus-visible {
    background-color: var(--color-sandy-beige);
    color: var(--color-copper-accent);
  }

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

  .site-header__phone {
    display: none;
    font-size: var(--text-small-size);
    font-weight: 500;
    color: var(--color-deep-graphite);
    text-decoration: none;
    white-space: nowrap;
    transition: color var(--transition-fast);
  }

  .site-header__phone:hover,
  .site-header__phone:focus-visible {
    color: var(--color-steel-blue);
  }

  .site-header__cta {
    display: none;
  }

  .site-header__toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.3125rem;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    background: transparent;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-default);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
    z-index: 1003;
  }

  .site-header__toggle:hover {
    background-color: var(--color-sandy-beige);
  }

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

  .site-header__toggle-line {
    display: block;
    width: 1.25rem;
    height: 2px;
    background-color: var(--color-deep-graphite);
    border-radius: 1px;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }

  .site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
    transform: translateY(0.4375rem) 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(-0.4375rem) rotate(-45deg);
  }

  @media (min-width: 48rem) {
    .site-header__inner {
      min-height: 5rem;
      padding-inline: var(--page-padding-tablet);
    }

    .site-header__logo {
      width: 2.75rem;
      height: 2.75rem;
    }

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

    .site-header__phone {
      display: inline-flex;
    }

    .site-header__cta {
      display: inline-flex;
    }
  }

  @media (min-width: 64rem) {
    .site-header__inner {
      padding-inline: var(--page-padding-desktop);
    }

    .site-header__nav {
      display: block;
    }

    .site-header__toggle {
      display: none;
    }
  }

  @media (max-width: 63.9375rem) {
    .site-header__nav {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      width: min(85vw, 22rem);
      max-width: 100%;
      background-color: var(--color-warm-white);
      box-shadow: -8px 0 24px rgba(48, 52, 58, 0.1);
      transform: translateX(100%);
      transition: transform var(--transition-menu);
      overflow-y: auto;
      z-index: 1002;
      display: block;
      padding: var(--space-xl) var(--space-lg);
    }

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

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

    .site-header__nav-item {
      width: 100%;
    }

    .site-header__nav-link {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      padding: var(--space-md) var(--space-sm);
      font-size: var(--text-body-size);
      font-weight: 500;
      border-bottom: 1px solid var(--color-divider-light);
    }

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

    .site-header__nav-item--has-dropdown .site-header__nav-link::before {
      position: static;
      transform: rotate(45deg);
      margin-inline-start: var(--space-xs);
    }

    .site-header__nav-item--has-dropdown.is-open .site-header__nav-link::before {
      transform: rotate(225deg);
    }

    .site-header__dropdown {
      position: static;
      opacity: 1;
      visibility: visible;
      transform: none;
      box-shadow: none;
      border: none;
      border-radius: 0;
      padding: 0;
      margin: 0;
      display: none;
    }

    .site-header__nav-item--has-dropdown.is-open .site-header__dropdown {
      display: block;
    }

    .site-header__dropdown-link {
      padding: var(--space-sm) var(--space-md);
      font-size: var(--text-small-size);
      border-bottom: 1px solid var(--color-divider-light);
    }

    .site-header__dropdown-link:last-child {
      border-bottom: none;
    }
  }
}