.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0.75rem;
}

.hub-tile {
  border-radius: 10px;
  border: 1px solid var(--color-border, rgba(255,255,255,0.16));
  background: var(--color-bg-elevated, rgba(5,8,18,0.96));
  padding: 0.9rem;
  text-align: left;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
  color: var(--color-text, #fff);
}

.hub-tile h2 {
  margin: 0 0 0.25rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text, #fff);
}

.hub-tile p {
  margin: 0;
  font-size: 0.85rem;
  opacity: 0.8;
  color: var(--color-text-muted, #a0a0a0);
}

.hub-tile:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(0,0,0,0.5);
  border-color: var(--color-primary, rgba(0,255,200,0.6));
}

.hub-tile:focus {
  outline: 2px solid var(--color-primary, #0af);
  outline-offset: 2px;
}

#prepHubView .card,
#playHubView .card,
#worldHubView .card {
  max-width: 900px;
  margin: 0 auto;
}

#prepHubView .card-header,
#playHubView .card-header,
#worldHubView .card-header {
  margin-bottom: 1rem;
}

#prepHubView .card-title,
#playHubView .card-title,
#worldHubView .card-title {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

#prepHubView .card-subtitle,
#playHubView .card-subtitle,
#worldHubView .card-subtitle {
  font-size: 0.95rem;
  opacity: 0.8;
}

.hub-tile-highlight {
  border-color: var(--arcane-teal, #2dd4bf) !important;
  animation: hub-tile-pulse 1.5s ease-in-out infinite;
}

@keyframes hub-tile-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.4); }
  50% { box-shadow: 0 0 12px 4px rgba(45, 212, 191, 0.3); }
}