.bd-header {
  border-bottom: 1px solid var(--pst-color-border);
}

.bones-brand {
  display: flex;
  align-items: center;
  height: 100%;
}

.bones-brand-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--pst-color-text-base);
  transition: opacity 0.2s ease-in-out;
}

.bones-brand-link:hover {
  opacity: 0.8;
  text-decoration: none;
}

.bones-logo {
  height: 24px;
  width: auto;
  color: var(--pst-color-text-base);
  transform: translateY(-4px);
}

.bones-text {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--pst-color-text-base);
}

.bones-nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.bones-nav-items {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.bones-nav-item {
  display: inline-block;
  padding: 0.25rem 0;
  color: var(--pst-color-text-muted);
  text-decoration: none;
  border: none;
  transition: all 0.2s ease-in-out;
  white-space: nowrap;
  font-size: 0.9rem;
  position: relative;
}

.bones-nav-item:visited,
.bones-nav-item:active {
  color: var(--pst-color-text-muted);
  text-decoration: none;
}

.bones-nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--pst-color-primary);
  transition: width 0.2s ease-in-out;
}

.bones-nav-item:hover {
  color: var(--pst-color-text-base);
  text-decoration: none;
}

.bones-nav-item:hover::after {
  width: 100%;
}

.bones-nav-item.current,
.bones-nav-item.current:visited,
.bones-nav-item.current:active {
  color: var(--pst-color-primary);
  font-weight: 500;
}

.bones-nav-item.current::after {
  width: 100%;
}

.bones-nav-item.current:hover {
  color: var(--pst-color-primary);
  opacity: 0.9;
}

.bones-nav-items.loading {
  min-height: 2rem;
}

.bones-nav-item.placeholder {
  background-color: transparent;
  cursor: default;
  min-width: 70px;
  height: 20px;
  position: relative;
  overflow: hidden;
}

.bones-nav-item.placeholder::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--pst-color-border), transparent);
  animation: bones-loading-shimmer 1.5s infinite;
}

@keyframes bones-loading-shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

.bones-placeholder-text {
  display: block;
  width: 60%;
  height: 10px;
  background-color: var(--pst-color-border);
  border-radius: 2px;
  margin: 8px auto;
}

@media (max-width: 768px) {
  .bones-nav-items {
    gap: 1rem;
  }

  .bones-nav-item {
    font-size: 0.85rem;
  }
}