/* Learn More — refined and concise */

/* ---------- Hero ---------- */
.learn-hero {
  padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-xl);
  background: radial-gradient(ellipse at center, var(--bg-secondary) 0%, var(--bg-primary) 70%);
  text-align: center;
}

.learn-hero-content h1 {
  font-size: 2.75rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.learn-hero-content p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto;
}

/* ---------- Team Section (keep big photos) ---------- */
.team-section {
  padding: var(--spacing-xxl) 0;
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xxl);
}
.section-header h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}
.section-header p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.team-member {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}
.team-member:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.member-photo {
  width: 100%;
  height: 280px;
  overflow: hidden;
}
.member-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.team-member:hover .member-photo img {
  transform: scale(1.05);
}

.member-info {
  padding: var(--spacing-lg);
}
.member-info h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}
.member-role {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}
.member-bio {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}
.member-expertise {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}
.member-expertise span {
  background: rgba(0, 212, 255, 0.1);
  color: var(--primary-color);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
}

/* ---------- Performance Metrics (two cards) ---------- */
.performance-section {
  padding: var(--spacing-xxl) 0;
  background: var(--bg-primary);
  text-align: center;
}
.performance-section h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xl);
  color: var(--primary-color);
}

.metrics-compact {
  max-width: 700px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.metric-card.big {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}
.metric-card.big:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}
.metric-value {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}
.metric-label {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}
.metric-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* ---------- Technology (Why Random Forest) ---------- */
.technology-section {
  padding: var(--spacing-xxl) 0 var(--spacing-xl);
  background: var(--bg-secondary);
}
.tech-quick {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  max-width: 1000px;
  margin: 0 auto;
}
.tech-card {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-lg);
  text-align: center;
  transition: var(--transition);
}
.tech-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}
.tech-card h3 {
  font-size: 1.25rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}
.tech-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .learn-hero-content h1 { font-size: 2.25rem; }
  .member-photo { height: 240px; }
}
@media (max-width: 768px) {
  .learn-hero-content p { font-size: 1rem; }
  .metrics-compact { gap: var(--spacing-lg); }
  .metric-value { font-size: 2.2rem; }
}
@media (max-width: 480px) {
  .learn-hero-content h1 { font-size: 1.875rem; }
  .team-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
  .metrics-compact { grid-template-columns: 1fr; }
}