.collections-hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--gray-900);
}

.collections-hero__image {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.collections-hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.collections-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(26, 25, 23, 0.85) 0%, rgba(26, 25, 23, 0.4) 100%);
}

.collections-hero__content {
  position: relative;
  z-index: 1;
  padding: var(--space-16) 0;
  color: white;
}

.breadcrumbs {
  margin-bottom: var(--space-6);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.breadcrumbs__item:not(:last-child)::after {
  content: '/';
  margin-left: var(--space-2);
  color: var(--gray-400);
}

.breadcrumbs__link {
  color: var(--gray-300);
  transition: color var(--transition-fast);
}

.breadcrumbs__link:hover {
  color: white;
}

.collections-hero__title {
  font-size: var(--text-5xl);
  color: white;
  margin-bottom: var(--space-6);
  line-height: var(--leading-tight);
}

.collections-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--gray-200);
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.collections-hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.collections-filter {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--gray-200);
  padding: var(--space-4) 0;
}

.filter-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.filter-bar__group {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background-color: transparent;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.is-active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.filter-bar__sort {
  min-width: 160px;
}

.select--sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
}

.collections-grid {
  padding: var(--space-16) 0;
  background-color: var(--color-background);
}

.collections-grid__container {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 640px) {
  .collections-grid__container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .collections-grid__container {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1280px) {
  .collections-grid__container {
    grid-template-columns: repeat(4, 1fr);
  }
}

.collection-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  opacity: 1;
  transform: scale(1);
}

.collection-card.is-hidden {
  display: none;
}

.collection-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.collection-card__link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.collection-card__link:hover {
  color: inherit;
}

.collection-card__image {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background-color: var(--gray-100);
}

.collection-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.collection-card:hover .collection-card__image img {
  transform: scale(1.05);
}

.collection-card__image--dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}

.collection-card__image--dual img {
  height: 100%;
}

.collection-card__image--pattern {
  display: flex;
  align-items: center;
  justify-content: center;
}

.pattern-mixed-media {
  width: 80%;
  height: 80%;
  background: 
    radial-gradient(circle at 20% 50%, var(--color-crimson) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, var(--color-cobalt) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, var(--color-ochre) 0%, transparent 50%);
  opacity: 0.3;
  border-radius: var(--radius-md);
}

.pattern-fresh {
  width: 80%;
  height: 80%;
  background: linear-gradient(135deg, var(--color-crimson) 0%, var(--color-cobalt) 100%);
  opacity: 0.2;
  border-radius: var(--radius-md);
}

.pattern-sustainable {
  width: 80%;
  height: 80%;
  background: 
    repeating-linear-gradient(
      45deg,
      var(--color-success),
      var(--color-success) 10px,
      transparent 10px,
      transparent 20px
    );
  opacity: 0.2;
  border-radius: var(--radius-md);
}

.collection-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(26, 25, 23, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.collection-card:hover .collection-card__overlay {
  opacity: 1;
}

.collection-card__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  background-color: var(--color-primary);
  color: white;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  z-index: 2;
}

.collection-card__badge--green {
  background-color: var(--color-success);
}

.collection-card__content {
  padding: var(--space-6);
}

.collection-card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.collection-card__description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
  line-height: var(--leading-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.collection-card__meta {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

.collection-card__meta--highlighted {
  color: var(--color-accent);
}

.collection-card--featured {
  grid-column: span 2;
}

@media (max-width: 1023px) {
  .collection-card--featured {
    grid-column: span 2;
  }
}

@media (max-width: 639px) {
  .collection-card--featured {
    grid-column: span 1;
  }
}

.ai-discovery {
  padding: var(--space-24) 0;
  background-color: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.ai-discovery__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (max-width: 1023px) {
  .ai-discovery__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

.ai-discovery__label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-cobalt);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.ai-discovery__title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-6);
  color: var(--color-text-primary);
}

.ai-discovery__text {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.ai-discovery__features {
  list-style: none;
  margin-bottom: var(--space-8);
}

.ai-discovery__features li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.ai-discovery__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.ai-discovery__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.ai-discovery__card {
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--gray-200);
  width: 100%;
  max-width: 400px;
}

.ai-discovery__recommendation {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.recommendation-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background-color: var(--gray-50);
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast);
}

.recommendation-item:hover {
  transform: translateX(4px);
}

.recommendation-item__color {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 2px solid white;
  box-shadow: var(--shadow-sm);
}

.collection-navigation {
  padding: var(--space-20) 0;
  background-color: var(--color-surface);
}

.collection-navigation__content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.collection-navigation__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.collection-navigation__text {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

.collection-navigation__features {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.feature-item__icon {
  color: var(--color-primary);
}

.cta-section {
  padding: var(--space-24) 0;
  background: linear-gradient(135deg, var(--color-crimson) 0%, var(--color-crimson-dark) 100%);
  color: white;
  text-align: center;
}

.cta-section__title {
  font-size: var(--text-4xl);
  color: white;
  margin-bottom: var(--space-4);
}

.cta-section__text {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.cta-section .btn--outline {
  border-color: white;
  color: white;
}

.cta-section .btn--outline:hover {
  background-color: white;
  color: var(--color-crimson);
}

@media (max-width: 767px) {
  .collections-hero__title {
    font-size: var(--text-3xl);
  }
  
  .collections-hero__subtitle {
    font-size: var(--text-base);
  }
  
  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filter-bar__group {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: var(--space-2);
    -webkit-overflow-scrolling: touch;
  }
  
  .ai-discovery__title {
    font-size: var(--text-3xl);
  }
  
  .collection-navigation__features {
    flex-direction: column;
    gap: var(--space-4);
  }
}