/* Statistics page specific styles */

.toolbar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
  padding: var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

/* Category filter buttons (exclusive selection) */
.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.category-btn {
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 200ms ease;
}

.category-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.category-btn--active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-surface);
  font-weight: 600;
}

.sort-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.sort-group label {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

.sort-select {
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  cursor: pointer;
  transition: border-color 200ms, background-color 200ms;
}

.sort-select:hover {
  border-color: var(--color-accent);
}

.sort-select:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
}

/* Year filter group */
.year-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.toggle-label {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
}

.year-inputs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.year-input {
  width: 85px;
  padding: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-align: center;
  transition: border-color 200ms;
}

.year-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.year-separator {
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* Conference search and chips filter */
.conference-filter {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.conference-search-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-hover);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 200ms;
}

.conference-search-row:focus-within {
  border-color: var(--color-accent);
}

.search-icon {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  flex-shrink: 0;
}

.conference-search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  min-width: 0;
}

.conference-search-input::placeholder {
  color: var(--color-text-secondary);
}

.conference-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.conference-chip {
  cursor: pointer;
  user-select: none;
  /* inherits .chip base styles from components.css */
}

.chip-more {
  padding: var(--space-1) var(--space-3);
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  cursor: pointer;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  transition: color 200ms, border-color 200ms;
  white-space: nowrap;
}

.chip-more:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* Chart section */
.chart-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

/* Conference info section */
.conference-info {
  margin-bottom: var(--space-8);
}

.conference-info h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--space-4) 0;
}

.stats-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-height: none;
  overflow-y: visible;
  padding-right: 0;
}

/* Scrollbar styling */
.stats-list::-webkit-scrollbar {
  width: 6px;
}

.stats-list::-webkit-scrollbar-track {
  background: transparent;
}

.stats-list::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.stats-list::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

/* Stats card */
.stats-card {
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  transition: all 200ms ease;
}

.stats-card:hover {
  background: var(--color-surface-hover);
  border-left-color: var(--color-accent);
}


.stats-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.stats-card-title {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  flex: 1;
}

.stats-card-name {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
}

.stats-card-year {
  font-size: 1.3125rem;
  color: var(--color-text-secondary);
  font-weight: 400;
}

.stats-card-rate {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-mono);
  min-width: 60px;
  text-align: right;
}

.stats-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.stats-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 1.3125rem;
  color: var(--color-text-secondary);
}

/* Progress bar */
.stats-progress-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.stats-progress-label {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
}

.stats-progress-bar {
  width: 100%;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.stats-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent));
  border-radius: 3px;
  transition: width 500ms ease;
}


.chart-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chart-container canvas {
  width: 100%;
  height: auto;
  display: block;
}

.chart-legend {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-3);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 1.3125rem;
  color: var(--color-text-secondary);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
}

/* Responsive layout */
@media (max-width: 1024px) {
  .toolbar {
    flex-direction: column;
  }

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

@media (max-width: 768px) {
  .toolbar {
    gap: var(--space-4);
  }

  .category-filter,
  .year-group,
  .sort-group {
    flex-wrap: wrap;
  }

  .sort-select {
    width: 100%;
  }

  .year-inputs {
    width: 100%;
  }

  .stats-card {
    padding: var(--space-3);
  }

  .stats-card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .stats-card-rate {
    align-self: flex-end;
  }

  .chart-legend {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }
}

@media (max-width: 640px) {
  .toolbar {
    gap: var(--space-3);
  }

  .year-group,
  .sort-group {
    width: 100%;
  }

  .year-inputs {
    width: 100%;
  }

  .year-input {
    flex: 1;
  }

  .sort-select {
    width: 100%;
    min-width: unset;
  }

  .conference-filter {
    width: 100%;
  }

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

  .stats-card {
    padding: var(--space-3);
  }

  .stats-card-meta {
    flex-direction: column;
    gap: var(--space-2);
  }

  .chip-group {
    width: 100%;
  }

  .chip {
    flex: 1;
    min-width: 80px;
  }

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

/* Conference detail cards */
.conference-detail-card {
  border-top: 4px solid var(--color-accent);
  padding: var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-4);
  transition: all 200ms ease;
}

.conference-detail-card:hover {
  background: var(--color-surface-hover);
}

.conference-detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
  gap: var(--space-2);
}

.conference-detail-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
}

.conference-detail-level {
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.conference-detail-full-name {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-3) 0;
}

.conference-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
}

.conference-detail-section h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
  font-weight: 600;
  margin: 0 0 var(--space-2) 0;
}

.conference-detail-section p {
  margin: 0;
  color: var(--color-text-primary);
  font-size: 0.875rem;
}

.conference-detail-section a {
  color: var(--color-accent);
  text-decoration: none;
  word-break: break-all;
}

.conference-detail-section a:hover {
  text-decoration: underline;
}

.badge-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.badge {
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

/* Empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
  text-align: center;
  color: var(--color-text-secondary);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2) 0;
}

.empty-state-text {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}