/* ✨ Tooltip container */
.phi-tooltip {
  position: absolute;
  z-index: 9999;
  display: none;
  max-width: 250px;
  padding: 8px;
  background: rgba(255,255,255,0.95);
  border: 1px solid #ccc;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  border-radius: 4px;
  font-size: 14px;
  color: #333;
}