/* ===== Election Integrity Dashboard - Dark Theme ===== */

:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-card: #21242f;
  --bg-card-hover: #282c3a;
  --border-color: #2e3346;
  --text-primary: #e8eaf0;
  --text-secondary: #9ca3b8;
  --text-muted: #6b7394;
  --accent-blue: #4e8cff;
  --accent-green: #34d399;
  --accent-red: #f87171;
  --accent-orange: #fb923c;
  --accent-purple: #a78bfa;
  --accent-yellow: #fbbf24;
  --accent-cyan: #22d3ee;
  --shadow: 0 4px 24px rgba(0,0,0,0.35);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.25);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ===== Top Bar ===== */
.top-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.top-bar h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.top-bar .subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
}

.top-bar-right {
  display: flex;
  align-items: stretch;
  gap: 0.75rem;
  flex: 1 1 560px;
  justify-content: flex-end;
}

.timeline-controls {
  min-width: min(100%, 760px);
  width: min(100%, 760px);
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  box-shadow: var(--shadow-sm);
}

.timeline-header-row,
.timeline-slider-row,
.timeline-footer-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.timeline-header-row {
  justify-content: space-between;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.timeline-title {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.timeline-meta {
  font-size: 0.88rem;
  color: var(--text-primary);
  font-weight: 600;
}

.compare-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.compare-toggle input {
  accent-color: var(--accent-blue);
}

.timeline-slider-row {
  margin-bottom: 0.75rem;
}

.timeline-slider-row input[type="range"] {
  flex: 1;
}

.timeline-endpoint {
  font-size: 0.75rem;
  color: var(--text-muted);
  min-width: 3.5rem;
}

.timeline-chip-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.timeline-chip {
  border: 1px solid var(--border-color);
  background: rgba(255,255,255,0.03);
  color: var(--text-secondary);
  border-radius: 999px;
  padding: 0.38rem 0.7rem;
  font-size: 0.75rem;
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: all var(--transition);
}

.timeline-chip span {
  color: var(--text-muted);
}

.timeline-chip:hover,
.timeline-chip.active {
  border-color: rgba(78, 140, 255, 0.55);
  color: var(--text-primary);
  background: rgba(78, 140, 255, 0.12);
}

.timeline-footer-row {
  justify-content: space-between;
  flex-wrap: wrap;
}

.snapshot-advanced {
  color: var(--text-secondary);
}

.snapshot-advanced summary {
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.snapshot-advanced select {
  margin-top: 0.5rem;
  min-width: 220px;
}

select, .filter-select {
  appearance: none;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.4rem 2rem 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-family: inherit;
  cursor: pointer;
  transition: border-color var(--transition);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239ca3b8' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.6rem center;
}

select:hover, .filter-select:hover {
  border-color: var(--accent-blue);
}

select:focus, .filter-select:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(78, 140, 255, 0.15);
}

/* ===== Loading Overlay ===== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 17, 23, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  transition: opacity 0.4s;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 1rem;
  text-align: center;
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ===== Tab Navigation ===== */
.tab-nav {
  display: flex;
  gap: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 1.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  position: relative;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.85rem 1.1rem;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition);
}

.tab-btn:hover {
  color: var(--text-secondary);
}

.tab-btn.active {
  color: var(--accent-blue);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0.5rem;
  right: 0.5rem;
  height: 2px;
  background: var(--accent-blue);
  border-radius: 2px 2px 0 0;
}

/* ===== Main Content ===== */
.main-content {
  padding: 1.25rem 1.5rem 2rem;
  max-width: 1600px;
  margin: 0 auto;
}

.tab-panel {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Cards & Grid ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  border-color: rgba(78, 140, 255, 0.25);
  box-shadow: var(--shadow);
}

.card-full {
  grid-column: 1 / -1;
}

.card h3 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}

.card .chart-container {
  width: 100%;
  min-height: 350px;
}

.card .chart-container-sm {
  width: 100%;
  min-height: 280px;
}

.card .chart-container-lg {
  width: 100%;
  min-height: 450px;
}

/* ===== Stat Cards ===== */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  border-left: 3px solid var(--accent-blue);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

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

.stat-card.green { border-left-color: var(--accent-green); }
.stat-card.red { border-left-color: var(--accent-red); }
.stat-card.orange { border-left-color: var(--accent-orange); }
.stat-card.purple { border-left-color: var(--accent-purple); }
.stat-card.yellow { border-left-color: var(--accent-yellow); }
.stat-card.cyan { border-left-color: var(--accent-cyan); }

.stat-card .stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.stat-card .stat-value {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-card .stat-detail {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* ===== Filter Bars ===== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.filter-bar label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ===== Chi-squared result badge ===== */
.chi-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.chi-badge.pass {
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.3);
  color: var(--accent-green);
}

.chi-badge.warn {
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.3);
  color: var(--accent-yellow);
}

.chi-badge.fail {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: var(--accent-red);
}

/* ===== Description Text ===== */
.section-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.65;
  max-width: 900px;
}

.section-desc strong {
  color: var(--text-primary);
}

/* ===== Parliament Arc ===== */
.parliament-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.parliament-legend {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
}

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

.legend-label {
  color: var(--text-secondary);
}

.legend-value {
  color: var(--text-primary);
  font-weight: 600;
  margin-left: auto;
  padding-left: 1rem;
}

/* ===== Table styles ===== */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.data-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.7rem;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 0.55rem 0.75rem;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(46, 51, 70, 0.5);
}

.data-table tr:hover td {
  background: rgba(78, 140, 255, 0.04);
  color: var(--text-primary);
}

.data-table .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.data-table .highlight {
  color: var(--accent-red);
  font-weight: 600;
}

/* ===== District investigation ===== */
.district-panel {
  border-color: rgba(167, 139, 250, 0.35);
}

.district-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.district-panel-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.district-panel-actions label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

#districtSummaryStats {
  margin-bottom: 1.25rem;
}

#anomalyTableBody tr {
  cursor: pointer;
}

#anomalyTableBody tr.selected-row td {
  background: rgba(167, 139, 250, 0.12);
  color: var(--text-primary);
}

.compare-note {
  color: var(--text-muted);
}

.comparison-card {
  border-left-color: var(--accent-cyan);
}

.comparison-pill {
  display: inline-flex;
  align-items: center;
  margin-top: 0.45rem;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  background: rgba(255,255,255,0.04);
  color: var(--text-secondary);
}

.comparison-pill.up {
  color: var(--accent-red);
  background: rgba(248, 113, 113, 0.12);
}

.comparison-pill.down {
  color: var(--accent-green);
  background: rgba(52, 211, 153, 0.12);
}

.comparison-pill.flat {
  color: var(--text-secondary);
  background: rgba(156, 163, 184, 0.12);
}

.metric-chip-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.metric-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  background: rgba(255,255,255,0.02);
}

.metric-chip strong {
  color: var(--text-primary);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .card-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  html { font-size: 14px; }
  
  .top-bar {
    padding: 0.6rem 1rem;
  }

  .top-bar-right {
    flex-basis: 100%;
    justify-content: stretch;
  }

  .timeline-controls {
    width: 100%;
    min-width: 0;
  }

  .timeline-header-row,
  .timeline-slider-row,
  .timeline-footer-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .timeline-endpoint {
    min-width: 0;
  }
  
  .tab-nav {
    padding: 0 0.75rem;
  }
  
  .main-content {
    padding: 1rem;
  }
  
  .card-grid, .card-grid-2, .card-grid-3 {
    grid-template-columns: 1fr;
  }
  
  .stat-card .stat-value {
    font-size: 1.35rem;
  }
  
  .card .chart-container,
  .card .chart-container-lg {
    min-height: 300px;
  }
}

@media (max-width: 480px) {
  .top-bar-left {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
  
  .tab-btn {
    font-size: 0.75rem;
    padding: 0.75rem 0.8rem;
  }
}