.heatmap-tooltip {
  position: absolute;
  padding: 6px 10px;
  background: var(--tblr-bg-surface);
  border: 1px solid var(--tblr-border-color);
  border-radius: 4px;
  font-size: 0.8125rem;
  color: var(--tblr-body-color);
  pointer-events: none;
  z-index: 1000;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}

.heatmap-cell {
  rx: 2;
  ry: 2;
  cursor: pointer;
  transition: opacity 0.1s ease;
  pointer-events: fill;
}

.heatmap-cell:hover {
  opacity: 0.75;
}

.heatmap-empty {
  fill: var(--tblr-bg-surface-secondary);
}

.heatmap-label {
  fill: var(--tblr-body-color);
  font-size: 10px;
  font-family: var(--tblr-font-sans-serif);
}

/* Layout: heatmap + filter side by side */
.heatmap-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.heatmap-wrapper .heatmap-svg-area {
  flex: 1;
  min-width: 0;
}

.heatmap-wrapper .heatmap-filter {
  flex-shrink: 0;
  padding-top: 20px;
}

.heatmap-filter select {
  min-width: 140px;
  max-width: 200px;
}

.heatmap-weekend {
  opacity: 0.8;
}

.heatmap-weekend:hover {
  opacity: 0.65;
}

.heatmap-stats {
  display: flex;
  gap: 16px;
  padding: 8px 0 0;
  font-size: 0.8125rem;
  color: var(--tblr-secondary, #6c757d);
  flex-wrap: wrap;
}

.heatmap-stats .stat-value {
  color: var(--tblr-body-color);
  font-weight: 600;
}