/* Professional Data Visualization Styles */

/* ===== EXECUTIVE DATA CARDS ===== */

.data-card {
  background: var(--data-card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--data-card-border);
  border-radius: var(--radius-lg);
  padding: var(--executive-panel-padding);
  box-shadow: var(--chart-shadow-md);
  transition: var(--transition-professional);
}

.data-card:hover {
  box-shadow: var(--chart-shadow-lg);
  transform: var(--hover-elevation);
  border-color: var(--chart-highlight);
}

.data-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-subtle);
}

.data-card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-executive);
  color: var(--text-primary);
  letter-spacing: var(--letter-spacing-tight);
}

.data-card-value {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-executive);
  color: var(--chart-highlight);
  letter-spacing: var(--letter-spacing-tight);
  line-height: 1;
  margin: var(--spacing-md) 0;
  font-variant-numeric: tabular-nums;
}

.data-card-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-weight: var(--font-weight-professional);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

/* ===== PROFESSIONAL CHARTS ===== */

.chart-container {
  background: var(--data-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--executive-panel-padding);
  box-shadow: var(--chart-shadow-md);
  border: 1px solid var(--data-card-border);
  position: relative;
  min-height: 300px;
}

.chart-title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-executive);
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  letter-spacing: var(--letter-spacing-tight);
}

.chart-legend {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.chart-legend-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: var(--transition-micro);
}

.chart-legend-item:hover {
  color: var(--text-primary);
  transform: var(--hover-elevation);
}

.chart-legend-color {
  width: var(--spacing-md);
  height: var(--spacing-md);
  border-radius: var(--radius-xs);
  box-shadow: var(--chart-shadow-sm);
}

/* Chart Series Colors */
.chart-series-1 { background: var(--chart-primary); }
.chart-series-2 { background: var(--chart-secondary); }
.chart-series-3 { background: var(--chart-tertiary); }
.chart-series-4 { background: var(--chart-quaternary); }
.chart-series-5 { background: var(--chart-quinary); }
.chart-series-6 { background: var(--chart-senary); }

/* ===== PROFESSIONAL GRAPHS ===== */

.graph-axis {
  stroke: var(--graph-axis-color);
  stroke-width: var(--graph-line-width-thin);
}

.graph-grid {
  stroke: var(--border-muted);
  stroke-width: var(--graph-line-width-thin);
  opacity: var(--graph-grid-opacity);
  stroke-dasharray: 2, 4;
}

.graph-line {
  fill: none;
  stroke-width: var(--graph-line-width);
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke-width var(--duration-fast) var(--ease-out);
}

.graph-line:hover {
  stroke-width: var(--graph-line-width-bold);
  filter: drop-shadow(var(--chart-glow));
}

.graph-point {
  r: var(--graph-point-size);
  transition: var(--transition-micro);
  cursor: pointer;
}

.graph-point:hover {
  r: var(--graph-point-size-large);
  filter: drop-shadow(var(--chart-glow));
}

/* ===== EXECUTIVE METRICS ===== */

.metric-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--executive-card-spacing);
  margin-bottom: var(--spacing-component);
}

.metric-card {
  background: var(--data-card-bg);
  border: 1px solid var(--data-card-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: var(--transition-professional);
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand-primary);
}

.metric-card.positive::before {
  background: var(--chart-positive);
}

.metric-card.negative::before {
  background: var(--chart-negative);
}

.metric-card:hover {
  transform: var(--hover-elevation-strong);
  box-shadow: var(--chart-shadow-lg);
  border-color: var(--chart-highlight);
}

.metric-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-professional);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--spacing-sm);
}

.metric-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-executive);
  color: var(--text-primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  margin-bottom: var(--spacing-xs);
}

.metric-change {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-professional);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  background: var(--bg-success);
  color: var(--text-success);
}

.metric-change.negative {
  background: var(--bg-error);
  color: var(--text-error);
}

.metric-change-icon {
  width: var(--text-sm);
  height: var(--text-sm);
}

/* ===== PROFESSIONAL PROGRESS BARS ===== */

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-bar-fill {
  height: 100%;
  background: var(--gradient-brand-primary);
  border-radius: var(--radius-full);
  transition: width var(--duration-professional) var(--ease-professional);
  position: relative;
  overflow: hidden;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: progress-shine 2s infinite;
}

@keyframes progress-shine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ===== SPARKLINE CHARTS ===== */

.sparkline {
  height: 40px;
  width: 100%;
  margin: var(--spacing-sm) 0;
}

.sparkline-path {
  fill: none;
  stroke: var(--chart-primary);
  stroke-width: var(--graph-line-width);
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sparkline-area {
  fill: var(--brand-primary-subtle);
  opacity: 0.3;
}

.sparkline-point-last {
  fill: var(--chart-highlight);
  r: 3px;
  filter: drop-shadow(0 0 4px var(--chart-highlight));
}

/* ===== RESPONSIVE DATA VISUALIZATION ===== */

@media (max-width: 768px) {
  .metric-row {
    grid-template-columns: 1fr;
  }
  
  .chart-container {
    padding: var(--spacing-lg);
    min-height: 250px;
  }
  
  .data-card-value {
    font-size: var(--text-2xl);
  }
  
  .metric-value {
    font-size: var(--text-xl);
  }
  
  .chart-legend {
    justify-content: center;
  }
}

/* ===== DARK MODE ENHANCEMENTS ===== */

@media (prefers-color-scheme: dark) {
  .chart-container,
  .data-card,
  .metric-card {
    background: var(--glass-background-dark);
    border-color: var(--glass-border-dark);
  }
  
  .graph-grid {
    opacity: 0.05;
  }
  
  .progress-bar {
    background: var(--neutral-800);
  }
}