/**
 * Chart Styles
 *
 * Styling for chart containers, loading states, legends, and dark mode overrides.
 * All styles use design tokens for consistency with the design system.
 */

/* ===========================
   Chart Container
   =========================== */

.chart-container {
  position: relative;
  width: 100%;
  min-height: 300px;
  background-color: var(--color-surface-0);
  border-radius: var(--radius-lg);
}

.chart-container.chart-sm {
  min-height: 200px;
}

.chart-container.chart-md {
  min-height: 300px;
}

.chart-container.chart-lg {
  min-height: 400px;
}

.chart-container.chart-xl {
  min-height: 500px;
}

/* ===========================
   Loading State
   =========================== */

.chart-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: inherit;
}

.chart-loading::after {
  content: "";
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-surface-2);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: chart-spin 0.8s linear infinite;
}

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

/* Hide loading indicator when chart is rendered */
.chart-container .apexcharts-canvas ~ .chart-loading,
.chart-container canvas ~ .chart-loading {
  display: none;
}

/* ===========================
   Chart Header
   =========================== */

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.chart-title {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  margin: 0;
}

.chart-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: var(--space-xs) 0 0 0;
}

/* ===========================
   Chart Body
   =========================== */

.chart-body {
  padding: var(--space-md);
}

.chart-body-flush {
  padding: 0;
}

/* ===========================
   Chart Actions
   =========================== */

.chart-actions {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.chart-actions .btn-group .btn {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
}

/* ===========================
   Custom Legend
   =========================== */

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

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

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

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

.chart-legend-color {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

/* ===========================
   Accessible Data Table Fallback
   =========================== */

.chart-data-table {
  margin-top: var(--space-md);
}

.chart-data-table summary {
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.chart-data-table summary:hover {
  background-color: var(--color-surface-1);
}

.chart-data-table summary:focus-visible {
  outline: var(--focus-ring-width) solid var(--color-primary);
  outline-offset: var(--focus-ring-offset);
}

.chart-data-table[open] summary {
  margin-bottom: var(--space-sm);
}

.chart-data-table .table {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
}

/* ===========================
   Empty State
   =========================== */

.chart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: inherit;
  padding: var(--space-xl);
  text-align: center;
  color: var(--color-text-tertiary);
}

.chart-empty-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

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

/* ===========================
   ApexCharts Overrides
   =========================== */

/* Base styling */
.apexcharts-canvas {
  background: transparent !important;
}

.apexcharts-tooltip {
  font-family: var(--font-family-base) !important;
  box-shadow: var(--shadow-lg) !important;
  border-radius: var(--radius-md) !important;
}

.apexcharts-tooltip-title {
  font-weight: var(--font-weight-semibold) !important;
  background: var(--color-surface-1) !important;
  border-bottom-color: var(--color-border-light) !important;
}

.apexcharts-xaxistooltip,
.apexcharts-yaxistooltip {
  background: var(--color-surface-0) !important;
  border-color: var(--color-border-light) !important;
  color: var(--color-text-primary) !important;
  border-radius: var(--radius-md) !important;
}

/* Toolbar styling */
.apexcharts-toolbar {
  z-index: 10 !important;
}

.apexcharts-menu {
  background: var(--color-surface-0) !important;
  border-color: var(--color-border-light) !important;
  box-shadow: var(--shadow-lg) !important;
  border-radius: var(--radius-md) !important;
}

.apexcharts-menu-item {
  color: var(--color-text-primary) !important;
}

.apexcharts-menu-item:hover {
  background: var(--color-surface-1) !important;
}

/* ===========================
   Dark Mode Overrides
   =========================== */

[data-bs-theme="dark"] .apexcharts-canvas {
  background: transparent !important;
}

[data-bs-theme="dark"] .apexcharts-text,
[data-bs-theme="dark"] .apexcharts-xaxis-label,
[data-bs-theme="dark"] .apexcharts-yaxis-label {
  fill: var(--color-text-secondary) !important;
}

[data-bs-theme="dark"] .apexcharts-title-text {
  fill: var(--color-text-primary) !important;
}

[data-bs-theme="dark"] .apexcharts-gridline {
  stroke: var(--color-border-light) !important;
}

[data-bs-theme="dark"] .apexcharts-xaxis-tick,
[data-bs-theme="dark"] .apexcharts-yaxis-tick {
  stroke: var(--color-border-light) !important;
}

[data-bs-theme="dark"] .apexcharts-tooltip {
  background: var(--color-surface-1) !important;
  border-color: var(--color-border-light) !important;
  color: var(--color-text-primary) !important;
}

[data-bs-theme="dark"] .apexcharts-tooltip-title {
  background: var(--color-surface-2) !important;
  border-bottom-color: var(--color-border-light) !important;
}

[data-bs-theme="dark"] .apexcharts-tooltip-text-y-value,
[data-bs-theme="dark"] .apexcharts-tooltip-text-y-label {
  color: var(--color-text-primary) !important;
}

[data-bs-theme="dark"] .apexcharts-xaxistooltip,
[data-bs-theme="dark"] .apexcharts-yaxistooltip {
  background: var(--color-surface-1) !important;
  border-color: var(--color-border-light) !important;
  color: var(--color-text-primary) !important;
}

[data-bs-theme="dark"] .apexcharts-xaxistooltip-bottom::before,
[data-bs-theme="dark"] .apexcharts-xaxistooltip-bottom::after {
  border-bottom-color: var(--color-surface-1) !important;
}

[data-bs-theme="dark"] .apexcharts-menu {
  background: var(--color-surface-1) !important;
  border-color: var(--color-border-light) !important;
}

[data-bs-theme="dark"] .apexcharts-menu-item {
  color: var(--color-text-primary) !important;
}

[data-bs-theme="dark"] .apexcharts-menu-item:hover {
  background: var(--color-surface-2) !important;
}

[data-bs-theme="dark"] .apexcharts-legend-text {
  color: var(--color-text-secondary) !important;
}

[data-bs-theme="dark"] .apexcharts-datalabel {
  fill: var(--color-text-primary) !important;
}

[data-bs-theme="dark"] .apexcharts-pie-label {
  fill: var(--color-text-inverse) !important;
}

[data-bs-theme="dark"] .apexcharts-radialbar-track path {
  stroke: var(--color-surface-2) !important;
}

/* ===========================
   Chart.js Compatibility
   =========================== */

/* For pages still using Chart.js */
.chart-container canvas {
  max-width: 100%;
}

/* ===========================
   Responsive Adjustments
   =========================== */

@media (max-width: 768px) {
  .chart-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .chart-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .chart-legend {
    justify-content: center;
  }

  .chart-container.chart-sm {
    min-height: 180px;
  }

  .chart-container.chart-md {
    min-height: 250px;
  }
}

/* ===========================
   Print Styles
   =========================== */

@media print {
  .chart-loading {
    display: none !important;
  }

  .chart-actions {
    display: none !important;
  }

  .chart-container {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}