/* ==========================================================================
   Stats Dashboard Styles
   ========================================================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

.stats-grid .full-width {
  grid-column: 1 / -1;
}

/* --- Chart Container --- */
.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--card-shadow);
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.chart-title {
  font-size: var(--text-lg);
  font-weight: 700;
}

.chart-subtitle {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

.chart-canvas-wrapper {
  position: relative;
  width: 100%;
}

.chart-canvas-wrapper canvas {
  width: 100%;
  height: auto;
}

/* --- Chart Tooltip --- */
.chart-tooltip {
  position: absolute;
  padding: var(--space-2) var(--space-3);
  background: var(--text-primary);
  color: var(--text-inverse);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 600;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  white-space: nowrap;
  z-index: var(--z-tooltip);
}

.chart-tooltip.visible {
  opacity: 1;
}

/* --- Chart Legend --- */
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
  justify-content: center;
}

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

.chart-legend-item:hover {
  opacity: 0.7;
}

.chart-legend-color {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* --- Quick Stats Row --- */
.stats-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stats-overview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.stats-overview-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
}

/* --- Bar Chart (CSS-only fallback) --- */
.css-bar-chart {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.css-bar-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.css-bar-label {
  min-width: 120px;
  font-size: var(--text-sm);
  text-align: right;
  color: var(--text-secondary);
}

.css-bar-track {
  flex: 1;
  height: 28px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
}

.css-bar-fill {
  height: 100%;
  border-radius: var(--radius-md);
  transition: width 1s ease;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: var(--space-2);
}

.css-bar-value {
  font-size: var(--text-xs);
  font-weight: 700;
  color: white;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stats-overview {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .stats-overview {
    grid-template-columns: 1fr;
  }
}