/* ===== MIND MAP ===== */
.mindmap-section {
  position: relative;
  z-index: 1;
  padding: 0 24px 40px;
}
#mindmapCanvas {
  width: 100%;
  height: 70vh;
  min-height: 450px;
  border-radius: var(--radius-xl);
  background: rgba(5, 10, 24, 0.4);
  border: 1px solid var(--glass-border);
}
#mindmapCanvas .vis-network {
  outline: none;
}

/* Mobile: card list fallback */
.mobile-topic-list {
  display: none;
  flex-direction: column;
  gap: 12px;
  padding: 0 4px;
}
.mobile-topic-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  cursor: pointer;
}
.mobile-topic-card:hover {
  border-color: var(--border-hover);
  background: var(--gradient-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-sm);
}
.mobile-topic-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
}
.mobile-topic-info { flex: 1; }
.mobile-topic-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  display: block;
}
.mobile-topic-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: block;
  margin-top: 2px;
}
.mobile-topic-status {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
}
.mobile-topic-status.started { background: var(--warning); }
.mobile-topic-status.completed { background: var(--success); }

@media (max-width: 768px) {
  #mindmapCanvas { display: none; }
  .mobile-topic-list { display: flex; }
  .mindmap-section { padding: 0 16px 24px; }
}