/**
 * Learn Page Styles
 * SEO-friendly AI Literacy content page
 */

.learn-page {
  min-height: 100vh;
  min-height: 100dvh; /* Dynamic viewport height - respects mobile browser UI */
  background: #fafbfc;
  color: #0d1329;
  font-family: 'DM Sans', sans-serif;
}

/* Header */
.learn-header {
  padding: 40px 24px 32px;
  text-align: center;
  background: linear-gradient(180deg, #fff 0%, #fafbfc 100%);
  border-bottom: 1px solid rgba(13, 19, 41, 0.08);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
  color: rgba(13, 19, 41, 0.6);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.15s;
}

.back-link:hover {
  color: #0d1329;
}

.back-arrow {
  font-size: 18px;
}

.learn-header h1 {
  margin: 0 0 12px;
  font-size: 32px;
  font-weight: 700;
  color: #0d1329;
}

.learn-subtitle {
  margin: 0;
  font-size: 16px;
  color: rgba(13, 19, 41, 0.65);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.5;
}

/* Navigation */
.learn-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 16px 24px;
  background: #fff;
  border-bottom: 1px solid rgba(13, 19, 41, 0.08);
  flex-wrap: wrap;
}

.learn-nav a {
  padding: 8px 16px;
  color: rgba(13, 19, 41, 0.65);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border-radius: 20px;
  transition: all 0.15s;
}

.learn-nav a:hover {
  background: rgba(13, 19, 41, 0.05);
  color: #0d1329;
}

.learn-nav a.active {
  background: #0d1329;
  color: #fff;
}

/* Main Content */
.learn-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.learn-section {
  margin-bottom: 56px;
  padding-top: 24px;
}

.learn-section:last-child {
  margin-bottom: 0;
}

/* Section header with copy link */
.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.section-header h2 {
  margin: 0;
  font-size: 26px;
  font-weight: 700;
  color: #0d1329;
}

.copy-link-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: transparent;
  border: none;
  color: rgba(13, 19, 41, 0.25);
  cursor: pointer;
  transition: color 0.15s, opacity 0.15s;
  opacity: 0;
}

.learn-section:hover .copy-link-icon {
  opacity: 1;
}

.copy-link-icon:hover {
  color: rgba(13, 19, 41, 0.5);
}

.copy-link-icon.copied {
  color: #228b22;
  opacity: 1;
}

.learn-section h3 {
  margin: 28px 0 14px;
  font-size: 18px;
  font-weight: 600;
  color: #0d1329;
}

.learn-section p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.7;
  color: rgba(13, 19, 41, 0.8);
}

.learn-section ul {
  margin: 0 0 16px;
  padding-left: 24px;
}

.learn-section li {
  margin-bottom: 10px;
  font-size: 16px;
  line-height: 1.6;
  color: rgba(13, 19, 41, 0.8);
}

.learn-section li strong {
  color: #0d1329;
  font-weight: 600;
}

/* Footnote style notes */
.learn-section p.note {
  margin-top: 20px;
  font-size: 13px;
  font-style: italic;
  line-height: 1.6;
  color: rgba(13, 19, 41, 0.55);
}

/* Footer */
.learn-footer {
  padding: 24px;
  text-align: center;
  border-top: 1px solid rgba(13, 19, 41, 0.08);
  background: #fff;
}

.learn-footer p {
  margin: 0;
  font-size: 13px;
  color: rgba(13, 19, 41, 0.5);
}

.learn-footer a {
  color: rgba(13, 19, 41, 0.6);
  text-decoration: none;
}

.learn-footer a:hover {
  color: #0d1329;
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 600px) {
  .learn-header {
    padding: 28px 20px 24px;
  }

  .learn-header h1 {
    font-size: 26px;
  }

  .learn-subtitle {
    font-size: 15px;
  }

  .learn-nav {
    padding: 12px 16px;
    gap: 6px;
  }

  .learn-nav a {
    padding: 6px 12px;
    font-size: 13px;
  }

  .learn-content {
    padding: 28px 20px 60px;
  }

  .learn-section h2 {
    font-size: 22px;
  }

  .learn-section h3 {
    font-size: 17px;
  }
}