.hover-tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(20, 20, 20, 0.92);
  border: 1px solid #444;
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 11px;
  font-family: 'SF Mono', Consolas, monospace;
  color: #ccc;
  white-space: nowrap;
  z-index: 1000;
  line-height: 1.5;
}

.hover-tooltip .tt-label { color: #888; }
.hover-tooltip .tt-val { color: #fff; font-weight: 600; }