/* Premium styles for blog post detail page */

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: rgba(148, 163, 184, 0.18);
  z-index: 1000;
}

.reading-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 0.12s ease-out;
}

.blog-detail-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 7rem 0 5rem;
  color: #ffffff;
  overflow: hidden;
}

.blog-detail-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(2, 20, 66, 0.78), rgba(37, 99, 235, 0.68)),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.18), transparent 38%);
}

.blog-detail-hero .overlay {
  position: relative;
  z-index: 1;
  padding: 2.5rem 0;
}

.hero-meta {
  max-width: 860px;
}

.hero-title {
  font-size: clamp(2.4rem, 4.6vw, 4.2rem);
  line-height: 1.08;
  margin: 0.2rem 0 0.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-wrap: balance;
  text-shadow: 0 4px 18px rgba(15, 23, 42, 0.24);
}

.hero-sub {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.98rem;
  font-weight: 600;
}

.hero-sub::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: #8b5cf6;
  box-shadow: 0 0 0 6px rgba(139, 92, 246, 0.2);
}

.badge.category {
  display: inline-block;
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  backdrop-filter: blur(8px);
}

.blog-detail-content {
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.article-kicker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.2rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.38rem 0.75rem;
  border-radius: 999px;
  background: #eef4ff;
  color: #2557d6;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pill.accent {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
}

.blog-detail-content .container {
  display: flex;
  gap: 2rem;
  padding: 3.5rem 0 5rem;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 2rem;
  align-items: start;
}

.content-area {
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  padding: 2.25rem;
  border-radius: 24px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.09);
  border: 1px solid rgba(37, 99, 235, 0.09);
}

.content-area > * {
  max-width: 760px;
}

.lead {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.article-quote {
  margin: 0 0 1.5rem;
  padding: 1.1rem 1.2rem;
  border-left: 4px solid var(--primary);
  background: linear-gradient(135deg, #eff6ff, #f8fbff);
  color: #1e3a8a;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: 0 16px 16px 0;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.08);
}

.article-copy-shell {
  position: relative;
  margin-top: 0.4rem;
  padding: 1.5rem;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(248, 251, 255, 0.92), rgba(255, 255, 255, 1));
  border: 1px solid rgba(37, 99, 235, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82), 0 12px 28px rgba(15, 23, 42, 0.05);
}

.post-body {
  color: #1f2937;
  line-height: 1.95;
  font-size: 1.02rem;
  position: relative;
  max-width: 720px;
}

.post-body p {
  margin-bottom: 1.35rem;
  text-wrap: pretty;
}

.post-body p:first-child::first-letter {
  float: left;
  font-size: 3.6rem;
  line-height: 0.88;
  padding-right: 0.65rem;
  padding-top: 0.35rem;
  color: var(--primary);
  font-weight: 800;
}

.post-body h2,
.post-body h3,
.post-body h4 {
  color: #0f172a;
  margin: 2rem 0 1rem;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.post-body h2 {
  padding-bottom: 0.55rem;
  border-bottom: 2px solid rgba(37, 99, 235, 0.16);
  font-weight: 800;
}

.post-body h3 {
  color: var(--primary-dark);
}

.post-body img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.4rem 0;
  border-radius: 16px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
}

.post-body li {
  margin-bottom: 0.65rem;
}

.post-body ul,
.post-body ol {
  padding-left: 1.2rem;
}

.post-body li::marker {
  color: #2563eb;
  font-weight: 800;
}

.post-body blockquote {
  margin: 1.6rem 0;
  padding: 0.9rem 1rem 0.9rem 1.2rem;
  border-left: 4px solid var(--primary);
  background: linear-gradient(135deg, #f8fbff, #eef4ff);
  border-radius: 0 16px 16px 0;
  color: #1e3a8a;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.06);
}

.post-actions {
  margin-top: 2rem;
}

.latest-insights {
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(148, 163, 184, 0.35);
}

.latest-insights-header h4,
.related-posts h4,
.card h4 {
  font-weight: 800;
}

.latest-insights-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.latest-insights-header h4 {
  margin: 0;
  color: #0f172a;
}

.latest-insights-header a {
  color: #1d4ed8;
  text-decoration: none;
  font-weight: 700;
}

.latest-insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.9rem;
}

.insight-card {
  display: grid;
  gap: 0.4rem;
  padding: 0.95rem;
  background: linear-gradient(180deg, #ffffff, #f8fbff);
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 16px;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.insight-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.12);
}

.insight-card span {
  color: #2563eb;
  font-size: 0.72rem;
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.insight-card strong {
  color: #0f172a;
  line-height: 1.45;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-outline {
  border: 1px solid rgba(37, 99, 235, 0.45);
  color: #1d4ed8;
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.12);
}

.btn-outline:hover {
  background: #eff6ff;
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.16);
}

.sidebar {
  display: grid;
  gap: 1rem;
}

.card {
  background: #ffffff;
  padding: 1.25rem;
  border-radius: 20px;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(148, 163, 184, 0.16);
}

.author-card {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.author-avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  font-weight: 800;
  flex-shrink: 0;
}

.quote-card {
  background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
}

.card h4 {
  margin: 0 0 0.8rem;
  font-size: 1.08rem;
  color: #0f172a;
}

.card p {
  margin: 0;
  color: #475569;
  line-height: 1.7;
}

.related-posts ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.related-posts li {
  margin: 0.35rem 0;
}

.related-posts a {
  display: block;
  color: #1d4ed8;
  text-decoration: none;
  padding: 0.7rem 0.85rem;
  border-radius: 14px;
  background: #f8fbff;
  transition: background 0.2s ease, transform 0.2s ease;
}

.related-posts a:hover {
  background: #eaf2ff;
  transform: translateX(2px);
}

/* Responsive */
@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .blog-detail-hero {
    padding: 4.8rem 0 3rem;
  }

  .content-area {
    padding: 1.5rem;
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 2rem;
  }

  .blog-detail-content .container {
    padding: 2rem 0 3rem;
  }

  .hero-sub {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
}