/* Simple tooltip using data-title, shown on hover */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-title);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 10%;
  transform: translateX(-50%);
  background: var(--surface-primary);
  border: 1px solid var(--border-primary);
  color: inherit;
  font-size: 0.75rem;
  font-weight: var(--font-bold);
  white-space: nowrap;
  padding: 4px 8px;
  border-radius: var(--radius-md, 6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  z-index: 100;
}

.tooltip:hover::after {
  opacity: 1;
}