.tooltip {
  position: absolute;
  background: rgba(0, 1, 12, 0.85);
  color: white;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.4;
  max-width: 300px;
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.tooltip.show {
  opacity: 1;
}

.tooltip-arrow {
  position: absolute;
  width: 8px;
  height: 8px;
  background: rgba(0, 1, 12, 0.85);
  transform: rotate(45deg);
}

/* Column header tooltip trigger */
.column-header-tooltip {
  cursor: help;
  position: relative;
}

.column-header-tooltip:hover {
  text-decoration: underline;
  text-decoration-style: dotted;
}