.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.accordion-content.is-expanded {
  max-height: 5000px;
}

.accordion-header {
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.accordion-header:hover {
  background-color: rgba(0, 0, 0, 0.03);
}

.collection-group {
  border-left: 3px solid #3273dc;
  padding-left: 1rem;
  margin-left: 0.5rem;
}

.teacher-multi-registration {
  background-color: rgba(50, 115, 220, 0.05);
}

[data-tooltip] {
  position: relative;
  cursor: help;
}

[data-tooltip]::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.5rem 0.75rem;
  background-color: rgba(0, 0, 0, 0.9);
  color: white;
  font-size: 0.875rem;
  white-space: nowrap;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  margin-bottom: 0.5rem;
  z-index: 1000;
}

[data-tooltip]:hover::before {
  opacity: 1;
}