/* -------------------------------------------------------- */
/* 🔹 Line Chart                                            */
/* -------------------------------------------------------- */
/* Canvas-based stepped line chart container                */
/* Mirrors stacked_line_chart.dart                          */

.line-chart {
  position: relative;
  width: 100%;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

.line-chart__canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.line-chart__tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--color-tooltip-bg);
  border: 1px solid var(--color-outline);
  border-radius: var(--radius-medium);
  padding: var(--space-s);
  font-size: var(--text-body-small);
  font-weight: 600;
  color: var(--color-on-surface);
  white-space: nowrap;
  text-align: center;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 1;
}

.line-chart__tooltip--visible {
  opacity: 1;
}


/* -------------------------------------------------------- */
/* 🔹 Placeholder overlay                                   */
/* -------------------------------------------------------- */
/* Tomorrow placeholder — positioned over invisible skeleton
   so the chart card keeps its exact dimensions. Mirrors
   _BarLineChartWithStatsReservePlaceholder in Dart          */

.line-chart__placeholder-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-s);
  pointer-events: none;
}

.line-chart__placeholder-icon {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.line-chart__placeholder-text {
  font-size: var(--text-body-medium);
  font-weight: 600;
  color: var(--color-primary);
}


/* -------------------------------------------------------- */
/* 🔹 Error overlay                                        */
/* -------------------------------------------------------- */
/* Mirrors InfoCard(variant: error, overlay: true, dense: true)
   in electricity_price_chart_card.dart                     */

.line-chart__error-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-s);
  padding: var(--space-s);
}

.line-chart__error-icon {
  width: 32px;
  height: 32px;
  color: var(--color-error);
}

.line-chart__error-text {
  font-size: var(--text-body-medium);
  font-weight: 600;
  color: var(--color-error);
  text-align: center;
}