/* Header layout */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(245, 241, 234, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  gap: var(--space-4);
}

/* Brand */
.site-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.site-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: radial-gradient(circle at 30% 30%, #e6cfb1 0, #b07a3a 40%, #5c3b1c 100%);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.site-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image: linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 6px 100%;
  mix-blend-mode: soft-light;
}

.site-header__text-group {
  display: flex;
  flex-direction: column;
}

.site-header__title {
  font-family: var(--font-accent);
  font-size: var(--font-size-lg);
  line-height: 1.1;
  letter-spacing: 0.03em;
}

.site-header__subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

@media (max-width: 480px) {
  .site-header__subtitle {
    display: none;
  }
}

/* Navigation */
.site-header__nav {
  display: flex;
  align-items: center;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-header__nav-item--highlight {
  margin-left: var(--space-2);
}

.site-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  padding-block: 0.25rem;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--gray-800));
  transition: width var(--transition-normal);
}

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

.site-header__nav-link:hover {
  color: var(--gray-800);
}

/* Mobile toggle */
.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  background-color: rgba(255, 255, 255, 0.9);
  cursor: pointer;
}

.site-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-800);
  transition: transform var(--transition-fast), opacity var(--transition-fast), width var(--transition-fast);
}

/* Mobile layout */
@media (max-width: 768px) {
  .site-header {
    position: sticky;
    top: 0;
    z-index: 40;
  }

  .site-header__inner {
    flex-wrap: wrap;
  }

  .site-header__toggle {
    display: inline-flex;
    order: -1;
  }

  .site-header__nav {
    order: 10;
    width: 100%;
    background-color: rgba(245, 241, 234, 0.98);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
  }

  .site-header__nav-list {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-4);
  }

  .site-header--menu-open .site-header__nav {
    max-height: 500px;
  }

  .site-header__nav-item--highlight {
    margin-left: 0;
    padding-top: var(--space-3);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
  }

  .site-header__nav-link {
    padding-block: var(--space-2);
  }
}

/* Toggle animation */
.site-header--menu-open .site-header__toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header--menu-open .site-header__toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.site-header--menu-open .site-header__toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .site-header__nav,
  .site-header__toggle-bar {
    transition: none;
  }
}