/* ── Pagina layout ── */
.stats-page {
  min-height: 100vh;
  background: var(--bg-body);
}

.stats-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 52px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 8px;
  box-shadow: var(--shadow-sm);
}

.stats-nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  margin-right: 8px;
}

.stats-nav-logo {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

.stats-nav-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

.stats-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── Range selector ── */
.range-selector {
  display: flex;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  align-items: center;
  flex-wrap: wrap;
}

.range-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-right: 8px;
}

.range-btn {
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.range-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.range-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

/* ── Summary cards ── */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.summary-card-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-mono);
  line-height: 1;
  margin-bottom: 6px;
}

.summary-card-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.summary-card-sub {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Grafiek panel ── */
.chart-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.chart-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.chart-panel-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.chart-legend {
  display: flex;
  gap: 12px;
  font-size: 11px;
  color: var(--text-secondary);
}

.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 4px;
}

.chart-container {
  position: relative;
  width: 100%;
  height: 200px;
}

.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}

/* ── Bar chart (handgetekend) ── */
.bar-chart-wrapper {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 160px;
  padding-bottom: 24px;
  position: relative;
}

.bar-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  height: 100%;
  justify-content: flex-end;
}

.bar-stack {
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-radius: 4px 4px 0 0;
  overflow: hidden;
  min-width: 20px;
  cursor: pointer;
  transition: opacity 0.15s;
}

.bar-stack:hover { opacity: 0.8; }

.bar-segment-training {
  background: var(--accent);
  transition: height 0.3s ease;
}

.bar-segment-analysis {
  background: var(--accent-2);
  transition: height 0.3s ease;
}

.bar-value {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.bar-label {
  font-size: 10px;
  color: var(--text-muted);
  white-space: nowrap;
  position: absolute;
  bottom: 0;
}

/* ── Stuk-statistieken tabel ── */
.pieces-stats-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.stats-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.stats-table th {
  text-align: left;
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border);
}

.stats-table th.right {
  text-align: right;
}

.stats-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}

.stats-table td.right {
  text-align: right;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

.stats-table tr:last-child td {
  border-bottom: none;
}

.stats-table tr:hover td {
  background: var(--surface-2);
}

/* ── Stability distribution ── */
.stability-dist {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.dist-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
}

.dist-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
  font-family: var(--font-mono);
}

.dist-label {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 600;
  margin-top: 2px;
}

/* ── AI Rapport ── */
.ai-report-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.ai-report-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.ai-report-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ai-report-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
}

.ai-report-output {
  display: none;
  margin-top: 16px;
  padding: 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-primary);
}

.ai-report-output.visible {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.ai-spinner-wrapper {
  display: none;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 12px;
}

.ai-spinner-wrapper.active {
  display: flex;
}

.ai-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ── Tooltip ── */
.chart-tooltip {
  position: fixed;
  background: var(--text-primary);
  color: white;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  line-height: 1.5;
  pointer-events: none;
  display: none;
  z-index: 999;
  box-shadow: var(--shadow-md);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .summary-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .stability-dist {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .summary-cards {
    grid-template-columns: 1fr 1fr;
  }
}