/* Tooltip utilities */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 6px;
  padding: 4px 8px;
  background: var(--text-primary);
  color: var(--text-inverse);
  border-radius: var(--border-radius-sm);
  font-size: 12px;
  line-height: 1.2;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  z-index: 1000;
}

[data-tooltip]:hover::after,
[data-tooltip]:focus-visible::after {
  opacity: 1;
}