/**
 * ============================================
 * AI Agency Framework — CLUSTER PAGE STYLES
 * ============================================
 * Curated Magazine Index Aesthetic
 * /ai-impact/jobs/ — Cluster 02
 * ============================================
 */

/* ===== EDITORIAL SECTIONS ===== */
.cluster-editorial a,
.cluster-learn a {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: var(--weight-semibold);
  transition: color 0.2s ease;
}

.cluster-editorial a:hover,
.cluster-learn a:hover {
  color: var(--accent-secondary);
}

.cluster-editorial__title {
  font-family: var(--font-headline);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-8);
}

.cluster-editorial__heading {
  font-family: var(--font-headline);
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.cluster-editorial p {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

/* ===== HERO ===== */
.cluster-hero {
  position: relative;
  width: 100%;
  height: 50vh;
  min-height: 380px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--color-space-500);
}

.cluster-hero__bg {
  position: absolute;
  inset: -5%;
  width: 110%;
  height: 110%;
  z-index: 0;
  will-change: transform;
}

.cluster-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.cluster-hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to bottom, rgba(10,10,15,0.3) 0%, rgba(10,10,15,0.85) 70%, var(--bg-primary) 100%);
}

.cluster-hero__content {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--section-px) var(--space-12);
}

.cluster-hero__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  text-decoration: none;
  margin-bottom: var(--space-6);
  transition: color 0.2s ease;
}

.cluster-hero__back:hover {
  color: var(--accent-primary);
}

.cluster-hero__back svg {
  transition: transform 0.2s ease;
}

.cluster-hero__back:hover svg {
  transform: translateX(-3px);
}

.cluster-hero__eyebrow {
  margin-bottom: var(--space-3);
  opacity: 0.7;
}

.cluster-hero__title {
  font-family: var(--font-headline);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tighter);
  color: var(--text-primary);
  margin: 0 0 var(--space-4);
}

.cluster-hero__word {
  display: inline-block;
  overflow: hidden;
}

.cluster-hero__word > span {
  display: inline-block;
  will-change: transform;
}

.cluster-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 500px;
  line-height: var(--leading-relaxed);
}

/* ===== FILTER BAR ===== */
.filter-bar {
  position: sticky;
  top: 64px;
  z-index: 250;
  background: var(--bg-overlay);
  backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--border-default);
  padding: var(--space-3) 0;
}

.filter-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--section-px);
}

.filter-bar__count {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.filter-bar__sort {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.filter-bar__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
}

.filter-bar__select {
  appearance: none;
  -webkit-appearance: none;
  background: var(--surface-glass);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-8) var(--space-2) var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--text-primary);
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: border-color 0.2s ease;
}

.filter-bar__select:hover, .filter-bar__select:focus {
  border-color: var(--border-hover);
  outline: none;
}

/* ===== CONTENT GRID ===== */
.cluster-content {
  padding: var(--space-12) 0 var(--section-py);
}

.cluster-content__grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-12);
  align-items: start;
}

/* ===== SPOKE CARDS ===== */
.spoke-card {
  background: var(--surface-glass);
  backdrop-filter: var(--blur-lg);
  border: 1px solid var(--border-default);
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: transform 0.4s var(--ease-cinematic),
              border-color 0.3s var(--ease-smooth),
              box-shadow 0.3s var(--ease-smooth);
  will-change: transform;
}

.spoke-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-elevated);
}

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

.spoke-card__image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.spoke-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-cinematic);
}

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

.spoke-card__image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,240,255,0.1), transparent);
  opacity: 0;
  transition: opacity 0.4s var(--ease-smooth);
}

.spoke-card:hover .spoke-card__image-overlay {
  opacity: 1;
}

.spoke-card__content {
  padding: var(--space-5);
}

.spoke-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.spoke-card__badge {
  animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.2); }
  50% { box-shadow: 0 0 0 4px rgba(0, 240, 255, 0); }
}

.spoke-card__title {
  font-family: var(--font-headline);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  line-height: var(--leading-snug);
  margin-bottom: var(--space-2);
  position: relative;
  display: inline;
  background-image: linear-gradient(var(--accent-primary), var(--accent-primary));
  background-size: 0% 1px;
  background-position: left bottom;
  background-repeat: no-repeat;
  transition: background-size 0.4s var(--ease-cinematic);
}

.spoke-card:hover .spoke-card__title {
  background-size: 100% 1px;
}

.spoke-card__excerpt {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-4);
}

.spoke-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--accent-primary);
  transition: gap 0.3s var(--ease-cinematic);
}

.spoke-card:hover .spoke-card__cta {
  gap: var(--space-3);
}

.spoke-card__cta svg {
  transition: transform 0.3s var(--ease-cinematic);
}

.spoke-card:hover .spoke-card__cta svg {
  transform: translateX(4px);
}

/* ===== FEATURED SPOKE ===== */
.spoke-card--featured {
  margin-bottom: var(--space-8);
  grid-column: 1 / -1;
}

.spoke-card--featured .spoke-card__link {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
}

.spoke-card--featured .spoke-card__image {
  aspect-ratio: auto;
  min-height: 320px;
}

.spoke-card--featured .spoke-card__content {
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.spoke-card--featured .spoke-card__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

.spoke-card--featured .spoke-card__excerpt {
  font-size: var(--text-base);
  -webkit-line-clamp: 4;
  margin-bottom: var(--space-6);
}

/* ===== MASONRY GRID ===== */
.spoke-masonry {
  column-count: 3;
  column-gap: var(--space-6);
}

.spoke-masonry .spoke-card {
  break-inside: avoid;
  margin-bottom: var(--space-6);
}

/* ===== RELATED CLUSTERS SIDEBAR ===== */
.related-clusters {
  position: sticky;
  top: 130px;
}

.related-clusters__inner {
  background: var(--surface-glass);
  backdrop-filter: var(--blur-lg);
  border: 1px solid var(--border-default);
  border-radius: var(--card-radius);
  padding: var(--space-6);
}

.related-clusters__title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-default);
}

.related-clusters__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.related-cluster {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background-color 0.2s var(--ease-smooth);
}

.related-cluster:hover {
  background: var(--surface-active);
}

.related-cluster__image {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.related-cluster__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.related-cluster__content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.related-cluster__label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
}

.related-cluster__name {
  font-family: var(--font-headline);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

.related-cluster__count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
}

/* ===== EDITORIAL SECTIONS ===== */
.cluster-editorial {
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding: var(--space-12) 0 var(--space-8);
}

.cluster-editorial__section {
  margin-bottom: var(--space-10);
}

.cluster-editorial__section:last-child {
  margin-bottom: 0;
}

.cluster-editorial__list {
  list-style: none;
  padding: 0;
  margin: var(--space-5) 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cluster-editorial__item {
  position: relative;
  padding-left: var(--space-6);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.cluster-editorial__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-gradient);
}

.cluster-editorial__cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-5);
}

.cluster-editorial__card {
  display: block;
  background: var(--surface-glass);
  border: 1px solid var(--border-default);
  border-radius: var(--card-radius);
  padding: var(--space-5);
  text-decoration: none;
  transition: transform 0.3s var(--ease-cinematic),
              border-color 0.3s var(--ease-smooth);
}

.cluster-editorial__card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
}

.cluster-editorial__card-title {
  font-family: var(--font-headline);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.cluster-editorial__card-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ===== FOOTER ===== */
.cluster-footer {
  padding: var(--space-12) 0;
  border-top: 1px solid var(--border-default);
}

.cluster-footer__grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cluster-footer__nav {
  display: flex;
  gap: var(--space-6);
}

.cluster-footer__link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  text-decoration: none;
  transition: color 0.2s ease;
}

.cluster-footer__link:hover {
  color: var(--accent-primary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .cluster-content__grid {
    grid-template-columns: 1fr;
  }

  .related-clusters {
    position: relative;
    top: 0;
    order: -1;
  }

  .related-clusters__list {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .related-cluster {
    flex: 1;
    min-width: 200px;
  }

  .spoke-masonry {
    column-count: 2;
  }
}

@media (max-width: 768px) {
  .cluster-hero {
    height: 45vh;
    min-height: 300px;
  }

  .cluster-hero__title {
    font-size: clamp(1.8rem, 8vw, 3rem);
  }

  .spoke-card--featured .spoke-card__link {
    grid-template-columns: 1fr;
  }

  .spoke-card--featured .spoke-card__image {
    min-height: 200px;
    aspect-ratio: 16 / 9;
  }

  .spoke-masonry {
    column-count: 1;
  }

  .filter-bar__inner {
    flex-wrap: wrap;
    gap: var(--space-3);
  }

  .cluster-footer__grid {
    flex-direction: column;
    gap: var(--space-6);
    text-align: center;
  }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  .spoke-card,
  .related-cluster {
    transition: none;
  }

  .spoke-card:hover {
    transform: none;
  }

  .spoke-card__badge {
    animation: none;
  }
}