/* ========================================
   ARTICLE PAGE STYLES
   Imports homepage.css for base + nav + footer
   ======================================== */

/* Back link */
.article-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  transition: color var(--duration-default);
}

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

/* Article header */
.article-header {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 6rem 0 0;
}

.article-header .topic-tag {
  margin-bottom: 1.25rem;
  display: inline-block;
}

.article-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.article-header-meta {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.article-header-meta .meta-sep {
  color: var(--text-muted);
}

.article-header-meta .meta-updated {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.share-buttons {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--duration-default);
  position: relative;
  text-decoration: none;
  padding: 0;
}

.share-btn:hover {
  color: var(--text-accent);
  border-color: var(--border-strong);
  background: var(--bg-card);
}

.share-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.share-btn svg {
  width: 14px;
  height: 14px;
}

.share-tooltip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--bg-card);
  color: var(--text-accent);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-default), transform var(--duration-default);
}

.share-tooltip.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.article-tldr {
  font-family: var(--font-body);
  font-size: 1.1rem;
  line-height: 1.65;
  color: var(--text-secondary);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
  background: var(--bg-card);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
}

.tldr-label {
  font-family: var(--font-body);
  font-weight: 700;
  font-style: normal;
  color: var(--text-accent);
  letter-spacing: 0.03em;
  margin-right: 0.25rem;
}

/* Cover image */
.article-cover {
  max-width: var(--max-width);
  margin: 2.5rem auto;
  padding: 0 2rem;
}

.article-cover img {
  width: 100%;
  border-radius: var(--radius-md);
  object-fit: cover;
}

/* Article body — rendered HTML content */
.article-body {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.article-body h2 {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin: 3rem 0 1.25rem;
  padding-top: 0.5rem;
}

.article-body h3 {
  font-family: var(--font-body);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 2.5rem 0 0.85rem;
}

.article-body h4 {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
  margin: 2rem 0 0.6rem;
  letter-spacing: -0.01em;
}

/* Reading body: intentionally 18px for long-form readability (Medium/Substack convention) */
.article-body p {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.article-body a {
  color: var(--text-accent);
  text-decoration: underline;
  text-decoration-color: rgba(var(--accent-glow-rgb), 0.3);
  text-underline-offset: 2px;
  transition: text-decoration-color var(--duration-default);
}

.article-body a:hover {
  text-decoration-color: var(--text-accent);
}

.article-body blockquote {
  border-left: 4px solid var(--accent);
  padding: 1rem 1.5rem;
  font-style: italic;
  color: var(--text-secondary);
  margin: 2rem 0;
  background: var(--bg-card);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-body blockquote p {
  margin-bottom: 0;
  font-size: 1.15rem;
  line-height: 1.7;
}

.article-body blockquote strong {
  font-style: normal;
}

.article-body ul,
.article-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

/* Reading body: intentionally 18px for long-form readability */
.article-body li {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  margin-bottom: 0.65rem;
}

.article-body li strong {
  color: var(--text-primary);
  font-weight: 700;
}

.article-body strong {
  color: var(--text-primary);
  font-weight: 700;
}

.article-body em {
  font-style: italic;
}

.article-body pre {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border);
}

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.article-body p code {
  background: var(--bg-card);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.article-body img {
  width: 100%;
  border-radius: var(--radius-sm);
  margin: 2rem 0;
}

.article-body hr {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 3rem 0;
}

/* Author social links (in header meta) */
.author-social-links {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.author-link {
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
  transition: color var(--duration-default);
}

.author-link:hover {
  color: var(--text-accent);
}

/* Author bio box (after article body) */
.article-author-box {
  max-width: var(--content-width);
  margin: 0 auto 3rem;
  padding: 1.5rem 0;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.author-box-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--forest-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  flex-shrink: 0;
}

.author-box-info {
  flex: 1;
  min-width: 0;
}

.author-box-name {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}

.author-box-role {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.author-box-tagline {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-accent);
  margin-bottom: 0.35rem;
}

.author-box-bio {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.author-box-links {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.25rem;
}

.author-box-links .author-link {
  color: var(--text-muted);
}

.author-box-links .author-link:hover {
  color: var(--text-accent);
}

/* Related articles */
.related-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem 4rem;
  border-top: 1px solid var(--border);
  padding-top: 3rem;
}

.related-section h2 {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* Compact newsletter (reuse homepage styles) */
.article-newsletter {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 0 4rem;
  text-align: center;
}

.article-newsletter h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.article-newsletter p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

/* Loading skeleton for article */
.article-loading {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 6rem 2rem 4rem;
}

.article-loading .skeleton {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
}

.article-loading .skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--shimmer), transparent);
  animation: shimmer 1.5s ease-in-out infinite;
}

.skel-tag { width: 100px; height: 22px; margin-bottom: 1.25rem; border-radius: var(--radius-sm); }
.skel-title { width: 90%; height: 40px; margin-bottom: 1rem; }
.skel-meta { width: 200px; height: 18px; margin-bottom: 2rem; }
.skel-body-line { width: 100%; height: 16px; margin-bottom: 0.75rem; }
.skel-body-short { width: 65%; height: 16px; margin-bottom: 0.75rem; }

/* Error state */
.article-error {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 10rem 2rem;
  text-align: center;
}

.article-error h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 1rem;
}

.article-error p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.article-error a {
  color: var(--text-accent);
  font-family: var(--font-body);
  font-weight: 600;
}

/* ========================================
   INSIGHTS LISTING PAGE
   ======================================== */
.insights-page-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 6rem 2rem 2rem;
}

.insights-page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.0;
  margin-bottom: 0.5rem;
}

.insights-page-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.insights-listing-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  padding: 0 2rem;
}

.insights-listing-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem 4rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.insights-listing-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-secondary);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 900px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .insights-listing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .article-header { padding-top: 5rem; }

  .article-header-meta {
    flex-wrap: wrap;
  }

  .share-buttons {
    width: 100%;
    margin-left: 0;
    margin-top: 0.5rem;
  }

  .article-header h1 {
    font-size: clamp(1.8rem, 6vw, 2.4rem);
  }

  .article-body h2 {
    font-size: 1.5rem;
  }

  .article-body h3 {
    font-size: 1.15rem;
  }

  .article-body p,
  .article-body li {
    font-size: 1.05rem;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .insights-listing-grid {
    grid-template-columns: 1fr;
  }

  .article-author-box {
    flex-direction: column;
    gap: 1rem;
  }

  .article-header-category {
    font-size: 0.92rem;
  }

  .article-header-meta {
    font-size: 0.92rem;
  }
}