/* ============================================
   shun6 AI News Feed — Detail Page Styles
   ============================================ */

/* --- Detail Header --- */
.detail-header {
  position: relative;
  z-index: 2;
  padding: 2rem 2rem 0;
  max-width: 900px;
  margin: 0 auto;
}

.detail-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 0;
  transition: color 0.25s ease;
}

.detail-back:hover {
  color: var(--accent);
}

.detail-back__arrow {
  font-size: 1rem;
  transition: transform 0.25s ease;
}

.detail-back:hover .detail-back__arrow {
  transform: translateX(-4px);
}

/* --- Detail Hero --- */
.detail-hero {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem 2rem 2rem;
}

.detail-hero__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 2rem;
  border: 1px solid var(--border-card);
  position: relative;
}

.detail-hero__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-meta);
  flex-wrap: wrap;
}

.detail-hero__source {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.detail-hero__source-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

.detail-hero__dot {
  color: var(--text-meta);
}

.detail-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.detail-hero__summary {
  font-size: 1.05rem;
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-secondary);
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* --- Detail Content --- */
.detail-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

.detail-content__body {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text-secondary);
}

.detail-content__body p {
  margin-bottom: 1.5rem;
}

.detail-content__body p:last-child {
  margin-bottom: 0;
}

/* --- Related Section --- */
.detail-related {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

.detail-related__title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-card);
}

.detail-related__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

/* Related card (compact version) */
.related-card {
  display: flex;
  gap: 0.75rem;
  padding: 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.related-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-card-hover);
}

.related-card__thumb {
  width: 80px;
  height: 60px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}

.related-card__info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.3rem;
  min-width: 0;
}

.related-card__source {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-meta);
  letter-spacing: 0.05em;
}

.related-card__title {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card:hover .related-card__title {
  color: var(--accent);
}

/* --- Not Found --- */
.detail-not-found {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 8rem 2rem;
}

.detail-not-found__code {
  font-family: var(--font-serif);
  font-size: 5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.detail-not-found__text {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.detail-not-found__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-decoration: none;
  transition: var(--transition);
}

.detail-not-found__link:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-card-hover);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .detail-header { padding: 1.5rem 1.2rem 0; }
  .detail-hero { padding: 0.5rem 1.2rem 1.5rem; }
  .detail-content { padding: 0 1.2rem 3rem; }
  .detail-related { padding: 0 1.2rem 3rem; }
  .detail-hero__image { border-radius: var(--radius-sm); }
  .detail-hero__title { font-size: 1.4rem; }
  .detail-related__grid { grid-template-columns: 1fr; }
}