.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(23, 27, 34, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(215, 183, 123, 0.2);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.site-header.is-scrolled {
  background-color: rgba(23, 27, 34, 0.98);
  border-bottom-color: var(--champagne-gold);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 72px;
  padding-block: var(--space-sm);
}

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

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

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--warm-white);
  white-space: nowrap;
}

.site-header__nav {
  display: flex;
  align-items: center;
  margin-inline-start: auto;
}

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

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

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

.site-header__nav-link {
  display: inline-block;
  padding: var(--space-2xs) 0;
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--warm-white);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background-color: var(--champagne-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-medium);
}

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

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

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

.site-header__phone {
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--warm-white);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

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

.site-header__cta {
  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: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.site-header__toggle:hover {
  background-color: rgba(215, 183, 123, 0.1);
}

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

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--warm-white);
  border-radius: 1px;
  transition: transform var(--transition-medium), opacity var(--transition-fast);
}

.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);
}

@media (max-width: 1023px) {
  .site-header__nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    background-color: var(--night-graphite);
    border-left: 1px solid rgba(215, 183, 123, 0.2);
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.4);
    transform: translateX(100%);
    transition: transform var(--transition-medium);
    z-index: 1001;
    overflow-y: auto;
    padding: var(--space-lg) var(--space-md);
    display: block;
  }

  .site-header__nav.is-open {
    transform: translateX(0);
            height: 100vh;
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2xs);
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-sm) var(--space-xs);
    font-size: 1rem;
    border-bottom: 1px solid rgba(246, 243, 237, 0.1);
  }

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

  .site-header__toggle {
    display: flex;
    z-index: 1002;
  }

  .site-header__phone {
    display: none;
  }

  .site-header__cta {
    display: none;
  }
}

@media (max-width: 767px) {
  .site-header__inner {
    min-height: 64px;
    padding-block: var(--space-xs);
  }

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

  .site-header__brand-text {
    font-size: 1rem;
    letter-spacing: 0.06em;
  }
}