.page-header {
  padding: calc(var(--spacing-xl) + var(--nav-height)) 0 var(--spacing-lg);
  position: relative;
  overflow: hidden;
  min-height: 40vh;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 212, 255, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.page-header-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.page-header-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.page-header-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-cyan-primary);
  margin-bottom: var(--spacing-sm);
  display: inline-block;
}

.page-header-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.page-header-description {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

.breadcrumb {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-glass-border);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  flex-wrap: wrap;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.breadcrumb-item:not(:last-child)::after {
  content: '';
  width: 5px;
  height: 5px;
  border-right: 1px solid var(--color-cyan-primary);
  border-bottom: 1px solid var(--color-cyan-primary);
  transform: rotate(-45deg);
}

.breadcrumb-link {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
  color: var(--color-cyan-primary);
}

.breadcrumb-item.active {
  color: var(--color-cyan-primary);
  font-weight: 500;
}

@media (max-width: 1024px) {
  .page-header {
    padding: calc(var(--spacing-lg) + var(--nav-height)) 0 var(--spacing-md);
    min-height: 35vh;
  }
}

@media (max-width: 768px) {
  .page-header {
    padding: calc(var(--spacing-md) + var(--nav-height)) 0 var(--spacing-sm);
    min-height: auto;
  }

  .page-header-label {
    font-size: 0.8rem;
  }

  .page-header-title {
    font-size: 1.75rem;
  }

  .page-header-description {
    font-size: 1rem;
    line-height: 1.6;
  }

  .breadcrumb-list {
    gap: 0.35rem;
  }

  .breadcrumb-item {
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .page-header-title {
    font-size: 1.5rem;
  }

  .page-header-description {
    font-size: 0.9rem;
  }

  .breadcrumb-item {
    font-size: 0.75rem;
  }

  .breadcrumb-item:not(:last-child)::after {
    width: 4px;
    height: 4px;
  }
}