/* Blog Article Enhancements */

/* ===== 1. TOC (Table of Contents) ===== */
.toc {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  padding: 20px;
  margin: 24px 0;
}

.toc-title {
  margin: 0 0 12px;
  font-size: 18px;
  color: #e8efff;
  font-weight: 700;
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-item {
  margin: 6px 0;
}

.toc-item a {
  color: #b8c5eb;
  text-decoration: none;
  font-size: 14px;
  transition: color .2s ease;
  display: block;
  padding: 4px 0;
}

.toc-item a:hover,
.toc-item a.active {
  color: #5aa5ff;
}

.toc-sub {
  margin-left: 16px;
  font-size: 13px;
}

.toc-sub a {
  color: #9fb0e3;
}

/* ===== 2. Related Articles ===== */
.related-articles {
  margin: 48px 0 32px;
  padding: 32px 0;
  border-top: 1px solid rgba(255,255,255,.08);
}

.related-articles h2 {
  margin: 0 0 20px;
  font-size: 24px;
  color: #e8efff;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.related-card {
  background: var(--card);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  padding: 16px;
  transition: all .2s ease;
}

.related-card:hover {
  border-color: rgba(90,165,255,.3);
  transform: translateY(-2px);
}

.related-card a {
  text-decoration: none;
  color: inherit;
  display: block;
}

.related-category {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: #7db4ff;
  background: rgba(90,165,255,.15);
  padding: 4px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.related-card h3 {
  margin: 0;
  font-size: 15px;
  color: #e8efff;
  line-height: 1.4;
}

/* ===== 3. CTA Block ===== */
.cta-block {
  background: linear-gradient(135deg, rgba(90,165,255,.12), rgba(139,226,139,.08));
  border: 1px solid rgba(90,165,255,.25);
  border-radius: 14px;
  padding: 32px;
  margin: 40px 0;
  text-align: center;
}

.cta-content h3 {
  margin: 0 0 10px;
  font-size: 24px;
  color: #e8efff;
}

.cta-content p {
  margin: 0 0 20px;
  font-size: 16px;
  color: #cbd6ff;
}

.cta-block .btn {
  font-size: 16px;
  padding: 12px 24px;
}

/* ===== 4. Lead Magnet ===== */
.lead-magnet {
  background: linear-gradient(135deg, rgba(139,226,139,.1), rgba(90,165,255,.08));
  border: 1px solid rgba(139,226,139,.2);
  border-radius: 12px;
  padding: 24px;
  margin: 32px 0;
}

.magnet-content {
  text-align: center;
}

.magnet-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.magnet-content h4 {
  margin: 0 0 8px;
  font-size: 20px;
  color: #e8efff;
}

.magnet-content p {
  margin: 0 0 16px;
  font-size: 14px;
  color: #b8c5eb;
}

.magnet-form {
  display: flex;
  gap: 10px;
  max-width: 400px;
  margin: 0 auto 10px;
}

.magnet-form input[type="email"] {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 8px;
  background: rgba(255,255,255,.03);
  color: #eaf0ff;
  font-size: 14px;
}

.magnet-form input::placeholder {
  color: #9fb0e3;
}

.magnet-form input:focus {
  outline: 2px solid rgba(90,165,255,.45);
  border-color: transparent;
}

.magnet-note {
  font-size: 12px;
  color: #9fb0e3;
  margin: 0;
}

.magnet-success {
  padding: 20px;
}

.magnet-success .success-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(139,226,139,.2);
  color: #8be28b;
  display: grid;
  place-items: center;
  font-size: 32px;
  margin: 0 auto 12px;
}

/* ===== 5. Reading Progress Bar ===== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, #5aa5ff, #8be28b);
  z-index: 999;
  transition: width .1s ease;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .related-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .toc {
    padding: 16px;
  }

  .cta-block {
    padding: 24px 16px;
  }

  .cta-content h3 {
    font-size: 20px;
  }

  .lead-magnet {
    padding: 20px 16px;
  }

  .magnet-form {
    flex-direction: column;
  }

  .magnet-form input,
  .magnet-form button {
    width: 100%;
  }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.related-articles,
.cta-block,
.lead-magnet {
  animation: fadeInUp 0.5s ease;
}