/* Chart Container & Canvas Styles - Black & White */

/* Chart Legend */
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.chart-legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.chart-legend-item:hover {
  opacity: 0.8;
}

.chart-legend-item.hidden {
  opacity: 0.4;
  text-decoration: line-through;
}

.chart-legend-color {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-sm);
  background: var(--text-primary);
  border: 1px solid var(--border);
}

.chart-legend-text {
  white-space: nowrap;
}

.chart-legend-value {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

/* Donut Chart Specific */
.donut-chart-container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.donut-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
}

.donut-center-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
}

.donut-center-value {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
}

/* Bar Chart Specific */
.bar-chart-container {
  position: relative;
}

.bar-chart-y-axis {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 40px;
  width: 50px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.bar-chart-x-axis {
  position: absolute;
  left: 50px;
  right: 0;
  bottom: 0;
  height: 40px;
  display: flex;
  justify-content: space-around;
  align-items: center;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* Line Chart Specific */
.line-chart-container {
  position: relative;
}

.line-chart-grid {
  stroke: var(--border);
  stroke-width: 1;
  stroke-dasharray: 4;
}

/* Chart Animations */
@keyframes chart-fade-in {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.chart-animate {
  animation: chart-fade-in var(--transition-slow) ease-out;
}

/* Chart Loading State */
.chart-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 280px;
  gap: var(--space-3);
}

.chart-loading-spinner {
  width: 40px;
  height: 40px;
  border: 2px solid var(--border);
  border-top-color: var(--text-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.chart-loading-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* Chart Empty State */
.chart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 280px;
  gap: var(--space-3);
}

.chart-empty-icon {
  font-size: 48px;
  opacity: 0.3;
  filter: grayscale(100%);
}

.chart-empty-text {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* Responsive Charts */
@media (max-width: 768px) {
  .chart-container {
    height: 220px;
  }

  .chart-legend {
    gap: var(--space-2);
  }

  .chart-legend-item {
    font-size: var(--text-xs);
  }

  .donut-center-value {
    font-size: var(--text-xl);
  }
}