/**
 * NDE Statistics Page Styles
 * Following Netwerk Digitaal Erfgoed (NDE) house style
 */

/* Page Layout */
.nde-stats-page {
  min-height: calc(100vh - 60px);
  background: #f5f7fa;
}

/* Header */
.stats-header {
  background: linear-gradient(135deg, #0a3dfa 0%, #1e50ff 100%);
  color: white;
  padding: 2rem 2rem;
  box-shadow: 0 2px 8px rgba(10, 61, 250, 0.2);
}

.stats-header .header-content {
  max-width: 1200px;
  margin: 0 auto;
}

.stats-header h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: white;
}

.stats-header .subtitle {
  margin: 0;
  font-size: 1.1rem;
  color: white;
}

/* Summary Section */
.summary-section {
  max-width: 1200px;
  margin: -1.5rem auto 0;
  padding: 0 1.5rem;
  position: relative;
  z-index: 10;
}

.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.summary-card {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.summary-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.card-value {
  font-size: 2rem;
  font-weight: 700;
  color: #0a3dfa;
  line-height: 1.2;
}

.card-label {
  font-size: 0.875rem;
  color: #6b7280;
  margin-top: 0.5rem;
  font-weight: 500;
}

.card-subtext {
  font-size: 0.75rem;
  color: #2ecc71;
  margin-top: 0.25rem;
  font-weight: 600;
}

/* Data Sources Row */
.summary-cards.data-sources-row {
  margin-top: 1rem;
}

/* Accent color variants for data source cards */
.summary-card.accent-green .card-value {
  color: #27ae60;
}

.summary-card.accent-teal .card-value {
  color: #1abc9c;
}

.summary-card.accent-purple .card-value {
  color: #9b59b6;
}

.summary-card.accent-orange .card-value {
  color: #f39c12;
}

.summary-card.accent-blue .card-value {
  color: #3498db;
}

.summary-card.accent-red .card-value {
  color: #e74c3c;
}

.summary-card.accent-slate .card-value {
  color: #64748b;
}

.summary-card.accent-amber .card-value {
  color: #d97706;
}

.summary-card.accent-indigo .card-value {
  color: #6366f1;
}

.summary-card.highlight {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.summary-card.highlight .card-value {
  color: white;
}

.summary-card.highlight .card-label {
  color: rgba(255, 255, 255, 0.9);
}

/* Overview stats content styling */
.overview-stats-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.overview-stats-content .summary-cards {
  margin-bottom: 0;
}

/* Charts Section */
.charts-section {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 1.5rem;
}

/* Chart Container */
.chart-container {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.chart-container.wide {
  grid-column: 1 / -1;
}

.chart-title {
  margin: 0 0 1rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: #1f2937;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #e5e7eb;
}

/* Chart Legend */
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #f3f4f6;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
}

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

.legend-label {
  color: #4b5563;
}

.legend-value {
  color: #9ca3af;
  font-size: 0.75rem;
}

/* Timeline Section */
.timeline-section {
  margin-top: 1.5rem;
}

.timeline-section .chart-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.timeline-section svg {
  max-width: 100%;
}

/* Loading & Error States */
.loading-container,
.error-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  text-align: center;
  padding: 2rem;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid #e1e5eb;
  border-top-color: #0a3dfa;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-container p {
  margin-top: 1rem;
  color: #6b7280;
  font-size: 1rem;
}

.error-container h2 {
  color: #dc2626;
  margin: 0 0 0.5rem 0;
}

.error-container p {
  color: #6b7280;
  margin: 0 0 1rem 0;
}

.error-hint {
  background: #f3f4f6;
  padding: 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
}

.error-hint code {
  display: block;
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: #1f2937;
  color: #10b981;
  border-radius: 4px;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.8rem;
}

/* Footer */
.stats-footer {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 1.5rem;
  text-align: center;
  border-top: 1px solid #e5e7eb;
}

.stats-footer p {
  margin: 0.25rem 0;
  font-size: 0.85rem;
  color: #9ca3af;
}

/* ========================================
   RESPONSIVE DESIGN - Mobile First
   ======================================== */

/* Large tablets and small desktops */
@media (max-width: 1024px) {
  .charts-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  }
  
  .chart-container svg {
    max-width: 100%;
    height: auto;
  }
}

/* Tablets */
@media (max-width: 768px) {
  .stats-header {
    padding: 1.5rem 1rem;
  }

  .stats-header h1 {
    font-size: 1.5rem;
  }

  .stats-header .subtitle {
    font-size: 0.95rem;
  }

  .summary-section {
    padding: 0 1rem;
    margin-top: -1rem;
  }

  .summary-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
  }

  .summary-card {
    padding: 1rem;
  }

  .charts-section {
    padding: 0 1rem;
    margin: 1.5rem auto;
  }

  .charts-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .chart-container {
    padding: 1rem;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
  }

  /* SVGs adapt to container width on mobile */
  .chart-container svg {
    min-width: 100%;
    width: 100%;
    height: auto;
    display: block;
  }

  /* For charts that truly need horizontal scroll, allow it */
  .chart-container.scrollable svg {
    min-width: max-content;
    width: auto;
  }

  .card-value {
    font-size: 1.5rem;
  }

  .card-label {
    font-size: 0.75rem;
  }

  /* Global filter bar on mobile */
  .global-filter-bar {
    margin: 0.75rem 1rem 0;
    padding: 0.6rem 1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .global-filter-bar .clear-all-btn {
    margin-left: 0;
    margin-top: 0.5rem;
    width: 100%;
    text-align: center;
  }

  /* Scatter plot filter chips */
  .scatter-type-filter {
    justify-content: center;
  }

  .filter-chip {
    padding: 0.25rem 0.5rem;
    font-size: 0.65rem;
  }

  /* Province cartogram filter buttons */
  .province-cartogram .type-filter {
    justify-content: center;
  }

  .province-cartogram .filter-btn {
    padding: 0.3rem 0.5rem;
    font-size: 0.7rem;
  }

  /* Chart legends on mobile */
  .chart-legend {
    justify-content: center;
  }

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

  /* Collapsible sections */
  .chart-container.collapsible .chart-header {
    padding: 0.75rem 1rem;
  }

  .chart-container.collapsible .chart-header .chart-title {
    font-size: 0.9rem;
  }

  /* Export buttons always visible on touch devices */
  .export-buttons {
    opacity: 1;
  }
}

/* Small phones */
@media (max-width: 480px) {
  .stats-header {
    padding: 1.25rem 0.75rem;
  }

  .stats-header h1 {
    font-size: 1.25rem;
  }

  .stats-header .subtitle {
    font-size: 0.85rem;
  }

  .summary-section {
    padding: 0 0.75rem;
    margin-top: -0.75rem;
  }

  .summary-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }

  .summary-card {
    padding: 0.75rem;
    border-radius: 8px;
  }

  .card-value {
    font-size: 1.25rem;
  }

  .card-label {
    font-size: 0.7rem;
  }

  .card-subtext {
    font-size: 0.65rem;
  }

  .charts-section {
    padding: 0 0.75rem;
    margin: 1rem auto;
  }

  .charts-grid {
    gap: 0.75rem;
  }

  .chart-container {
    padding: 0.75rem;
    border-radius: 8px;
  }

  .chart-title {
    font-size: 0.9rem;
    padding-bottom: 0.5rem;
    margin-bottom: 0.75rem;
  }

  /* SVGs adapt to container width on very small screens */
  .chart-container svg {
    min-width: 100%;
    width: 100%;
    height: auto;
  }

  /* Sunburst breadcrumb */
  .sunburst-breadcrumb {
    font-size: 0.75rem;
  }

  /* Scatter stats */
  .scatter-stats {
    font-size: 0.7rem;
    text-align: center;
  }

  /* Selection info */
  .scatter-selection-info {
    top: 45px;
    right: 10px;
    padding: 0.3rem 0.5rem;
    font-size: 0.7rem;
  }

  /* Stacked bar hover info */
  .stacked-hover-info {
    font-size: 0.75rem;
    padding: 0.4rem 0.75rem;
  }

  /* Province tooltip */
  .province-cartogram .province-tooltip {
    font-size: 0.75rem;
    padding: 0.4rem 0.75rem;
    gap: 0.5rem;
  }

  /* Legend items */
  .legend-item {
    font-size: 0.7rem;
  }

  .legend-color {
    width: 10px;
    height: 10px;
  }

  /* Global filter bar */
  .global-filter-bar {
    margin: 0.5rem 0.75rem 0;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
  }

  .global-filter-bar .filter-label {
    font-size: 0.75rem;
  }

  .active-filter-tag {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
  }

  /* Footer */
  .stats-footer {
    padding: 1rem 0.75rem;
    margin: 1rem auto;
  }

  .stats-footer p {
    font-size: 0.75rem;
  }
}

/* Landscape phones */
@media (max-width: 768px) and (orientation: landscape) {
  .summary-cards {
    grid-template-columns: repeat(6, 1fr);
  }

  .summary-card {
    padding: 0.75rem 0.5rem;
  }

  .card-value {
    font-size: 1.25rem;
  }

  .card-label {
    font-size: 0.65rem;
  }

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

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
  /* Larger touch targets */
  .filter-chip {
    min-height: 36px;
    min-width: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .province-cartogram .filter-btn {
    min-height: 36px;
    min-width: 36px;
  }

  .export-btn {
    min-height: 32px;
    padding: 0.4rem 0.6rem;
  }

  .active-filter-tag .remove-filter {
    min-width: 24px;
    min-height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Always show export buttons on touch */
  .export-buttons {
    opacity: 1;
  }

  /* Disable hover effects that don't work on touch */
  .summary-card:hover {
    transform: none;
  }

  .filter-chip:hover {
    transform: none;
  }
}

/* SVG Styling */
.chart-container svg {
  display: block;
  margin: 0 auto;
}

.chart-container .tick text {
  font-family: inherit;
  fill: #6b7280;
}

.chart-container .domain {
  stroke: #e5e7eb;
}

.chart-container .tick line {
  stroke: #e5e7eb;
}

/* Tooltip (for future use) */
.chart-tooltip {
  position: absolute;
  padding: 0.5rem 0.75rem;
  background: rgba(31, 41, 55, 0.95);
  color: white;
  border-radius: 6px;
  font-size: 0.8rem;
  pointer-events: none;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.chart-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: rgba(31, 41, 55, 0.95);
}

/* Province Cartogram */
.province-cartogram {
  position: relative;
}

.province-cartogram .type-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
  padding: 0 0.5rem;
}

.province-cartogram .filter-btn {
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border: 2px solid #e5e7eb;
  border-radius: 6px;
  background: #fff;
  color: #374151;
  cursor: pointer;
  transition: all 0.15s ease;
}

.province-cartogram .filter-btn:hover {
  border-color: #0a3dfa;
  color: #0a3dfa;
}

.province-cartogram .filter-btn.active {
  background: #0a3dfa;
  border-color: #0a3dfa;
  color: #fff;
}

.province-cartogram .province-tooltip {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(31, 41, 55, 0.95);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  display: flex;
  gap: 0.75rem;
  align-items: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.province-cartogram .tooltip-count {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.8rem;
}

.province-cartogram .tooltip-type {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.75rem;
  font-style: italic;
}

/* Province map path styling */
.province-cartogram .province {
  transition: fill 0.15s ease, stroke 0.15s ease, stroke-width 0.15s ease;
}

.province-cartogram .province:hover {
  filter: brightness(0.9);
}

.province-cartogram .province-label,
.province-cartogram .count-label {
  text-shadow: 0 0 3px rgba(255,255,255,0.5), 0 0 6px rgba(255,255,255,0.3);
}

/* Collapsible Chart Sections */
.chart-container.collapsible {
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  overflow: hidden;
}

.chart-container.collapsible .chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: #f9fafb;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s ease;
}

.chart-container.collapsible .chart-header:hover {
  background: #f3f4f6;
}

.chart-container.collapsible .chart-header .chart-title {
  margin: 0;
  font-size: 1rem;
}

.chart-container.collapsible .collapse-icon {
  font-size: 1.25rem;
  color: #6b7280;
  transition: transform 0.2s ease;
}

.chart-container.collapsible.collapsed .collapse-icon {
  transform: rotate(-90deg);
}

.chart-container.collapsible .chart-content {
  padding: 1rem;
  transition: max-height 0.3s ease, opacity 0.2s ease;
  overflow: hidden;
}

.chart-container.collapsible.collapsed .chart-content {
  max-height: 0;
  padding: 0 1rem;
  opacity: 0;
}

/* Bubble Chart */
.bubble-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #f3f4f6;
}

.bubble-tooltip {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Sunburst Chart */
.sunburst-breadcrumb {
  text-align: center;
  font-size: 0.85rem;
  color: #6b7280;
  margin-bottom: 0.5rem;
  min-height: 1.2em;
  font-weight: 500;
}

/* Rating Histogram specific styling */
.chart-container svg .bar {
  transition: opacity 0.15s ease;
}

/* Scatter Plot */
.scatter-plot {
  position: relative;
  overflow: hidden;
}

.scatter-type-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
  padding: 0 0.5rem;
}

.filter-chip {
  padding: 0.3rem 0.6rem;
  font-size: 0.7rem;
  font-weight: 600;
  border: 2px solid;
  border-radius: 20px;
  background: transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-chip:hover {
  transform: scale(1.05);
}

.filter-chip.active {
  color: #fff !important;
}

.filter-chip.clear {
  border-color: #ef4444;
  color: #ef4444;
  background: transparent;
}

.filter-chip.clear:hover {
  background: #ef4444;
  color: #fff;
}

.scatter-selection-info {
  position: absolute;
  top: 60px;
  right: 15px;
  background: rgba(10, 61, 250, 0.9);
  color: #fff;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
}

.scatter-stats {
  margin-top: 0.5rem;
  padding: 0 0.5rem;
  font-size: 0.8rem;
  color: #6b7280;
}

.scatter-tooltip {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

/* Stacked Bar Chart */
.stacked-hover-info {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(31, 41, 55, 0.95);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Export Buttons */
.chart-container {
  position: relative;
}

.export-buttons {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: flex;
  gap: 0.3rem;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.chart-container:hover .export-buttons {
  opacity: 1;
}

.export-btn {
  padding: 0.3rem 0.5rem;
  font-size: 0.7rem;
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
  color: #374151;
}

.export-btn:hover {
  background: #e5e7eb;
  border-color: #d1d5db;
}

/* Global Filter Bar */
.global-filter-bar {
  max-width: 1200px;
  margin: 1rem auto 0;
  padding: 0.75rem 1.5rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.global-filter-bar .filter-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #374151;
}

.global-filter-bar .filter-chips {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.global-filter-bar .clear-all-btn {
  margin-left: auto;
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  cursor: pointer;
  color: #6b7280;
  transition: all 0.15s ease;
}

.global-filter-bar .clear-all-btn:hover {
  background: #ef4444;
  border-color: #ef4444;
  color: #fff;
}

/* Active filter indicators */
.active-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.active-filter-tag {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.6rem;
  background: #0a3dfa;
  color: #fff;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
  animation: tagSlideIn 0.2s ease-out;
}

.active-filter-tag .remove-filter {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
  transition: color 0.15s ease, transform 0.15s ease;
}

.active-filter-tag .remove-filter:hover {
  color: #fff;
  transform: scale(1.2);
}

/* ========================================
   ANIMATIONS & TRANSITIONS
   ======================================== */

/* Keyframe Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes tagSlideIn {
  from {
    opacity: 0;
    transform: translateX(-10px) scale(0.8);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Chart Container Animations */
.chart-container {
  animation: fadeInUp 0.4s ease-out;
  animation-fill-mode: both;
}

.charts-grid .chart-container:nth-child(1) { animation-delay: 0.05s; }
.charts-grid .chart-container:nth-child(2) { animation-delay: 0.1s; }
.charts-grid .chart-container:nth-child(3) { animation-delay: 0.15s; }
.charts-grid .chart-container:nth-child(4) { animation-delay: 0.2s; }
.charts-grid .chart-container:nth-child(5) { animation-delay: 0.25s; }
.charts-grid .chart-container:nth-child(6) { animation-delay: 0.3s; }
.charts-grid .chart-container:nth-child(7) { animation-delay: 0.35s; }
.charts-grid .chart-container:nth-child(8) { animation-delay: 0.4s; }
.charts-grid .chart-container:nth-child(9) { animation-delay: 0.45s; }
.charts-grid .chart-container:nth-child(10) { animation-delay: 0.5s; }
.charts-grid .chart-container:nth-child(11) { animation-delay: 0.55s; }
.charts-grid .chart-container:nth-child(12) { animation-delay: 0.6s; }

/* Summary Card Animations */
.summary-card {
  animation: fadeInUp 0.3s ease-out;
  animation-fill-mode: both;
}

.summary-cards .summary-card:nth-child(1) { animation-delay: 0.1s; }
.summary-cards .summary-card:nth-child(2) { animation-delay: 0.15s; }
.summary-cards .summary-card:nth-child(3) { animation-delay: 0.2s; }
.summary-cards .summary-card:nth-child(4) { animation-delay: 0.25s; }
.summary-cards .summary-card:nth-child(5) { animation-delay: 0.3s; }
.summary-cards .summary-card:nth-child(6) { animation-delay: 0.35s; }

/* Global Filter Bar Animation */
.global-filter-bar {
  animation: fadeInDown 0.3s ease-out;
}

/* Filter Chip Transitions */
.filter-chip {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.filter-chip:active {
  transform: scale(0.95);
}

.filter-chip.active {
  animation: scaleIn 0.15s ease-out;
}

/* Province Map Path Transitions */
.province-cartogram .province {
  transition: fill 0.25s ease, stroke 0.2s ease, stroke-width 0.2s ease, filter 0.2s ease;
}

.province-cartogram .province.selected {
  animation: pulse 1.5s ease-in-out infinite;
}

/* Scatter Plot Point Transitions */
.scatter-plot circle {
  transition: opacity 0.3s ease, r 0.2s ease, stroke 0.2s ease, stroke-width 0.2s ease;
}

.scatter-plot circle:hover {
  transition: r 0.15s ease, stroke-width 0.15s ease;
}

/* Stacked Bar Transitions */
.stacked-bar-chart rect {
  transition: opacity 0.3s ease, stroke 0.2s ease, stroke-width 0.2s ease, filter 0.2s ease;
}

.stacked-bar-chart rect:hover {
  filter: brightness(1.1);
}

/* Sunburst Path Transitions */
.sunburst-chart path {
  transition: opacity 0.3s ease, filter 0.2s ease;
}

/* Tooltip Animations */
.chart-tooltip,
.scatter-tooltip,
.bubble-tooltip {
  animation: fadeIn 0.15s ease-out;
}

/* Selection Info Animation */
.scatter-selection-info {
  animation: fadeInDown 0.2s ease-out;
}

/* Hover Info Animation */
.stacked-hover-info,
.province-cartogram .province-tooltip {
  animation: fadeIn 0.15s ease-out;
}

/* Collapsible Section Transitions */
.chart-container.collapsible .chart-content {
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), 
              opacity 0.25s ease,
              padding 0.35s ease;
}

.chart-container.collapsible .collapse-icon {
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Export Button Transitions */
.export-buttons {
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.chart-container:hover .export-buttons {
  transform: translateY(0);
}

.export-btn {
  transition: all 0.15s ease;
}

.export-btn:active {
  transform: scale(0.95);
}

/* Legend Item Transitions */
.legend-item {
  transition: opacity 0.2s ease;
}

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

/* Donut/Pie Chart Path Transitions */
.chart-container svg path[fill] {
  transition: opacity 0.3s ease, filter 0.2s ease;
}

/* Bar Chart Bar Transitions */
.chart-container svg rect.bar {
  transition: opacity 0.3s ease, fill 0.2s ease;
}

/* Histogram Bar Transitions */
.rating-histogram rect {
  transition: opacity 0.3s ease, fill 0.2s ease;
}

/* Bubble Chart Transitions */
.bubble-chart circle {
  transition: opacity 0.3s ease, r 0.2s ease, stroke 0.2s ease;
}

/* Loading State Animation */
.loading-container {
  animation: fadeIn 0.3s ease-out;
}

.loading-spinner {
  animation: spin 0.8s linear infinite;
}

/* Skeleton Loading Animation (for future use) */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* Reduced Motion Preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .loading-spinner {
    animation: spin 2s linear infinite;
  }
}

/* Chart Update Transitions - for D3 managed elements */
.chart-updating {
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.chart-updated {
  opacity: 1;
  transition: opacity 0.3s ease;
}

/* Focus States for Accessibility */
.filter-chip:focus-visible,
.filter-btn:focus-visible,
.export-btn:focus-visible,
.clear-all-btn:focus-visible {
  outline: 2px solid #0a3dfa;
  outline-offset: 2px;
}

/* Interactive Element Cursor Styles */
.province-cartogram .province {
  cursor: pointer;
}

.sunburst-chart path {
  cursor: pointer;
}

.stacked-bar-chart rect {
  cursor: pointer;
}

.scatter-plot circle {
  cursor: pointer;
}

/* Double-click Hint Styles */
.chart-hint {
  text-align: center;
  font-size: 0.75rem;
  color: #9ca3af;
  margin-top: 0.75rem;
  padding-top: 0.5rem;
  border-top: 1px solid #f3f4f6;
}

.dblclick-hint {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.6rem;
  background: #f9fafb;
  border-radius: 4px;
  font-style: italic;
}

.dblclick-hint::before {
  content: '🖱️';
  font-style: normal;
}

/* Make hint more visible on hover */
.chart-container:hover .chart-hint {
  color: #6b7280;
}

.chart-container:hover .dblclick-hint {
  background: #e5e7eb;
}

/* Responsive: hide hint on touch devices since double-tap is awkward */
@media (hover: none) and (pointer: coarse) {
  .chart-hint {
    display: none;
  }
}

/* Small screens: smaller hint text */
@media (max-width: 480px) {
  .chart-hint {
    font-size: 0.65rem;
    margin-top: 0.5rem;
  }
  
  .dblclick-hint {
    padding: 0.2rem 0.4rem;
  }
}


/* Certainty Chart Details */
.certainty-details {
  margin-top: 1rem;
  padding: 1rem;
  background: #f9fafb;
  border-radius: 8px;
  border: 1px solid #e5e7eb;
}

.certainty-details h4 {
  margin: 0 0 0.75rem 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: #374151;
}

.certainty-entries {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 300px;
  overflow-y: auto;
}

.certainty-entry {
  padding: 0.5rem 0.75rem;
  background: white;
  border-radius: 6px;
  border: 1px solid #e5e7eb;
  transition: all 0.15s ease;
}

.certainty-entry:hover {
  border-color: #0a3dfa;
  box-shadow: 0 2px 4px rgba(10, 61, 250, 0.1);
}

.certainty-entry .entry-name {
  font-weight: 500;
  font-size: 0.85rem;
  color: #1f2937;
  margin-bottom: 0.25rem;
}

.certainty-entry .entry-details {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: #6b7280;
}

.certainty-entry .entry-city {
  color: #374151;
}

.certainty-entry .entry-confidence {
  padding: 0.125rem 0.375rem;
  background: #fef3c7;
  border-radius: 4px;
  color: #92400e;
  font-weight: 500;
}

.certainty-entry .entry-reason {
  color: #dc2626;
  font-style: italic;
}

.tooltip-fixed {
  position: absolute;
  top: 40px;
  right: 20px;
  padding: 0.5rem 0.75rem;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  border-radius: 4px;
  font-size: 0.8rem;
  z-index: 100;
  pointer-events: none;
}

/* ============================================
   DARK MODE STYLES
   ============================================ */

[data-theme="dark"] .nde-stats-page {
  background: #1a1a2e;
}

/* Header */
[data-theme="dark"] .stats-header {
  background: linear-gradient(135deg, #1e3a6e 0%, #2a4d8e 100%);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Summary Cards */
[data-theme="dark"] .summary-card {
  background: #252542;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .summary-card:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .card-value {
  color: #6b9aff;
}

[data-theme="dark"] .card-label {
  color: #a0a0b0;
}

[data-theme="dark"] .card-subtext {
  color: #2ecc71;
}

/* Accent color variants for dark mode */
[data-theme="dark"] .summary-card.accent-green .card-value {
  color: #2ecc71;
}

[data-theme="dark"] .summary-card.accent-teal .card-value {
  color: #1abc9c;
}

[data-theme="dark"] .summary-card.accent-purple .card-value {
  color: #a855f7;
}

[data-theme="dark"] .summary-card.accent-orange .card-value {
  color: #f59e0b;
}

[data-theme="dark"] .summary-card.accent-blue .card-value {
  color: #3b82f6;
}

[data-theme="dark"] .summary-card.accent-red .card-value {
  color: #ef4444;
}

[data-theme="dark"] .summary-card.accent-slate .card-value {
  color: #94a3b8;
}

[data-theme="dark"] .summary-card.accent-amber .card-value {
  color: #fbbf24;
}

[data-theme="dark"] .summary-card.accent-indigo .card-value {
  color: #818cf8;
}

[data-theme="dark"] .summary-card.highlight {
  background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
}

/* Chart Container */
[data-theme="dark"] .chart-container {
  background: #252542;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .chart-title {
  color: #e0e0e0;
  border-bottom-color: #3d3d5c;
}

/* Chart Legend */
[data-theme="dark"] .chart-legend {
  border-top-color: #3d3d5c;
}

[data-theme="dark"] .legend-label {
  color: #a0a0b0;
}

[data-theme="dark"] .legend-value {
  color: #6b7280;
}

/* Loading & Error States */
[data-theme="dark"] .loading-container,
[data-theme="dark"] .error-container {
  color: #e0e0e0;
}

[data-theme="dark"] .loading-spinner {
  border-color: #3d3d5c;
  border-top-color: #4a7dff;
}

[data-theme="dark"] .loading-container p {
  color: #a0a0b0;
}

[data-theme="dark"] .error-container h2 {
  color: #ff6b7a;
}

[data-theme="dark"] .error-container p {
  color: #a0a0b0;
}

[data-theme="dark"] .error-hint {
  background: #1e1e32;
}

[data-theme="dark"] .error-hint code {
  background: #0d0d1a;
  color: #10b981;
}

/* Footer */
[data-theme="dark"] .stats-footer {
  border-top-color: #3d3d5c;
}

[data-theme="dark"] .stats-footer p {
  color: #6b7280;
}

/* SVG Styling */
[data-theme="dark"] .chart-container .tick text {
  fill: #a0a0b0;
}

[data-theme="dark"] .chart-container .domain {
  stroke: #3d3d5c;
}

[data-theme="dark"] .chart-container .tick line {
  stroke: #3d3d5c;
}

/* Tooltip */
[data-theme="dark"] .chart-tooltip {
  background: rgba(37, 37, 66, 0.95);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .chart-tooltip::after {
  border-top-color: rgba(37, 37, 66, 0.95);
}

/* Province Cartogram */
[data-theme="dark"] .province-cartogram .type-filter {
  background: transparent;
}

[data-theme="dark"] .province-cartogram .filter-btn {
  border-color: #3d3d5c;
  background: #1e1e32;
  color: #e0e0e0;
}

[data-theme="dark"] .province-cartogram .filter-btn:hover {
  border-color: #4a7dff;
  color: #4a7dff;
}

[data-theme="dark"] .province-cartogram .filter-btn.active {
  background: #4a7dff;
  border-color: #4a7dff;
  color: #fff;
}

[data-theme="dark"] .province-cartogram .province-tooltip {
  background: rgba(37, 37, 66, 0.95);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* Collapsible Chart Sections */
[data-theme="dark"] .chart-container.collapsible {
  border-color: #3d3d5c;
}

[data-theme="dark"] .chart-container.collapsible .chart-header {
  background: #1e1e32;
}

[data-theme="dark"] .chart-container.collapsible .chart-header:hover {
  background: #2d2d4a;
}

[data-theme="dark"] .chart-container.collapsible .collapse-icon {
  color: #a0a0b0;
}

/* Bubble Chart */
[data-theme="dark"] .bubble-legend {
  border-top-color: #3d3d5c;
}

/* Sunburst Chart */
[data-theme="dark"] .sunburst-breadcrumb {
  color: #a0a0b0;
}

/* Scatter Plot */
[data-theme="dark"] .scatter-type-filter {
  background: transparent;
}

[data-theme="dark"] .filter-chip {
  background: #1e1e32;
}

[data-theme="dark"] .filter-chip.clear {
  border-color: #ef4444;
  color: #ef4444;
}

[data-theme="dark"] .filter-chip.clear:hover {
  background: #ef4444;
  color: #fff;
}

[data-theme="dark"] .scatter-selection-info {
  background: rgba(74, 125, 255, 0.9);
}

[data-theme="dark"] .scatter-stats {
  color: #a0a0b0;
}

/* Stacked Bar Chart */
[data-theme="dark"] .stacked-hover-info {
  background: rgba(37, 37, 66, 0.95);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* Export Buttons */
[data-theme="dark"] .export-btn {
  background: #1e1e32;
  border-color: #3d3d5c;
  color: #e0e0e0;
}

[data-theme="dark"] .export-btn:hover {
  background: #2d2d4a;
  border-color: #4d4d6c;
}

/* Global Filter Bar */
[data-theme="dark"] .global-filter-bar {
  background: #252542;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .global-filter-bar .filter-label {
  color: #e0e0e0;
}

[data-theme="dark"] .global-filter-bar .clear-all-btn {
  background: #1e1e32;
  border-color: #3d3d5c;
  color: #a0a0b0;
}

[data-theme="dark"] .global-filter-bar .clear-all-btn:hover {
  background: #ef4444;
  border-color: #ef4444;
  color: #fff;
}

/* Active filter indicators */
[data-theme="dark"] .active-filter-tag {
  background: #4a7dff;
}

/* Focus States for Accessibility */
[data-theme="dark"] .filter-chip:focus-visible,
[data-theme="dark"] .filter-btn:focus-visible,
[data-theme="dark"] .export-btn:focus-visible,
[data-theme="dark"] .clear-all-btn:focus-visible {
  outline-color: #6b9aff;
}

/* Chart Hints */
[data-theme="dark"] .chart-hint {
  color: #6b7280;
  border-top-color: #3d3d5c;
}

[data-theme="dark"] .dblclick-hint {
  background: #1e1e32;
}

[data-theme="dark"] .chart-container:hover .chart-hint {
  color: #a0a0b0;
}

[data-theme="dark"] .chart-container:hover .dblclick-hint {
  background: #2d2d4a;
}

/* Certainty Chart Details */
[data-theme="dark"] .certainty-details {
  background: #1e1e32;
  border-color: #3d3d5c;
}

[data-theme="dark"] .certainty-details h4 {
  color: #e0e0e0;
}

[data-theme="dark"] .certainty-entry {
  background: #252542;
  border-color: #3d3d5c;
}

[data-theme="dark"] .certainty-entry:hover {
  border-color: #4a7dff;
  box-shadow: 0 2px 4px rgba(74, 125, 255, 0.2);
}

[data-theme="dark"] .certainty-entry .entry-name {
  color: #e0e0e0;
}

[data-theme="dark"] .certainty-entry .entry-details {
  color: #a0a0b0;
}

[data-theme="dark"] .certainty-entry .entry-city {
  color: #c0c0d0;
}

[data-theme="dark"] .certainty-entry .entry-confidence {
  background: #3d3520;
  color: #fbbf24;
}

[data-theme="dark"] .certainty-entry .entry-reason {
  color: #ff6b7a;
}

[data-theme="dark"] .tooltip-fixed {
  background: rgba(37, 37, 66, 0.95);
}

/* Skeleton Loading Animation */
[data-theme="dark"] .skeleton {
  background: linear-gradient(90deg, #252542 25%, #3d3d5c 50%, #252542 75%);
}