.site-header {
  position: relative;
  z-index: 100;
  width: 100%;
  background: var(--color-paper);
  border-bottom: var(--border-default);
}

.site-header__inner {
  width: min(100%, var(--container-max));
  margin-inline: auto;
  padding: var(--space-5) var(--container-padding) var(--space-4);
}

.site-header__brand {
  display: flex;
  width: min(100%, 31rem);
  height: 3rem;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  color: var(--color-ink);
  text-decoration: none;
}

.site-header__brand img {
  display: block;
  width: auto;
  max-width: 100%;
  height: 100%;
  object-fit: contain;
}

.site-header__rule {
  height: 1px;
  margin-top: var(--space-3);
  background: var(--color-linen);
}

.site-header__descriptor {
  margin: var(--space-3) 0 0;
  text-align: center;
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0.16em;
  line-height: var(--leading-label);
  text-transform: uppercase;
}

.site-header__navigation-row {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  margin-top: var(--space-4);
}

.site-header__nav {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: clamp(0.75rem, 1.8vw, 1.75rem);
}

.site-header__nav-list {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: clamp(0.75rem, 1.8vw, 1.75rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-list li,
.site-header__nav-list li + li {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 0;
}

.site-header__nav-list a,
.site-header__appointment {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
}

.site-header__nav-list a {
  position: relative;
}

.site-header__nav-list a::after {
  position: absolute;
  right: 0;
  bottom: 0.35rem;
  left: 0;
  height: 1px;
  background: var(--color-wine);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

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

.site-header__nav-list a[aria-current="page"] {
  color: var(--color-wine);
}

.site-header__appointment,
.site-header__mobile-appointment {
  padding-inline: var(--space-4);
  border: 1px solid var(--color-wine);
  border-radius: var(--radius-control);
  background: var(--color-wine);
  color: var(--color-paper);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.site-header__appointment:hover,
.site-header__mobile-appointment:hover {
  border-color: var(--color-wine-dark);
  background: var(--color-wine-dark);
  color: var(--color-paper);
}

.site-header__appointment:active,
.site-header__mobile-appointment:active {
  transform: translateY(1px);
}

.site-header__toggle,
.site-header__mobile-appointment {
  display: none;
}

@media (max-width: 980px) {
  .site-header__inner {
    padding-inline: var(--container-padding-tablet);
  }

  .site-header__navigation-row {
    justify-content: space-between;
  }

  .site-header__toggle,
  .site-header__mobile-appointment {
    display: inline-flex;
    min-width: 2.75rem;
    min-height: 2.75rem;
    align-items: center;
    justify-content: center;
  }

  .site-header__toggle {
    gap: var(--space-2);
    padding: 0 var(--space-3);
    border: 1px solid var(--color-linen);
    border-radius: var(--radius-control);
    background: transparent;
    color: var(--color-ink);
    font-size: var(--text-label);
    font-weight: 600;
    letter-spacing: 0.12em;
    line-height: 1;
    text-transform: uppercase;
  }

  .site-header__toggle:hover,
  .site-header__toggle[aria-expanded="true"] {
    border-color: var(--color-ink);
    background: var(--color-paper-warm);
    color: var(--color-ink);
  }

  .site-header__toggle-lines {
    display: grid;
    width: 1rem;
    gap: 0.1875rem;
  }

  .site-header__toggle-lines span {
    display: block;
    height: 1px;
    background: currentColor;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
  }

  .site-header__toggle[aria-expanded="true"] .site-header__toggle-lines span:nth-child(1) {
    transform: translateY(0.25rem) rotate(45deg);
  }

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

  .site-header__toggle[aria-expanded="true"] .site-header__toggle-lines span:nth-child(3) {
    transform: translateY(-0.25rem) rotate(-45deg);
  }

  .site-header__mobile-appointment {
    padding-inline: var(--space-3);
    font-size: var(--text-label);
    font-weight: 600;
    letter-spacing: 0.08em;
    line-height: 1.2;
    text-decoration: none;
    text-transform: uppercase;
  }

  .site-header__nav {
    position: absolute;
    z-index: 101;
    top: 100%;
    right: 0;
    left: 0;
    display: grid;
    max-height: calc(100vh - 3rem);
    padding: var(--space-4) var(--container-padding-tablet) var(--space-5);
    overflow-y: auto;
    border-top: var(--border-default);
    border-bottom: var(--border-default);
    background: var(--color-paper);
    box-shadow: var(--shadow-soft);
    gap: var(--space-3);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-0.5rem);
    transition: opacity var(--transition-panel), transform var(--transition-panel);
  }

  .site-header__nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-header__nav-list {
    display: grid;
    gap: 0;
    border-top: var(--border-default);
  }

  .site-header__nav-list li {
    border-bottom: var(--border-default);
  }

  .site-header__nav-list a {
    width: 100%;
    justify-content: flex-start;
    min-height: 3rem;
    font-size: var(--text-small);
    letter-spacing: 0.08em;
  }

  .site-header__nav-list a::after {
    right: auto;
    bottom: 0.35rem;
    width: 2rem;
  }

  .site-header__appointment {
    width: 100%;
  }
}

@media (max-width: 680px) {
  .site-header__inner {
    padding: var(--space-4) var(--container-padding-mobile);
  }

  .site-header__brand {
    width: min(100%, 20rem);
    height: 2rem;
  }

  .site-header__descriptor {
    font-size: 0.5rem;
    letter-spacing: 0.16em;
  }

  .site-header__nav {
    padding-inline: var(--container-padding-mobile);
  }

  .site-header__toggle-label {
    display: none;
  }

  .site-header__toggle {
    width: 2.75rem;
    padding: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__nav,
  .site-header__toggle-lines span {
    transition: none;
  }
}