.usage-page {
  display: grid;
  gap: 16px;
  container-type: inline-size;
}

.usage-page > * {
  min-width: 0;
}

.usage-page .card,
.usage-page .stat,
.usage-page .usage-insight-card,
.usage-page .context-details-panel,
.usage-page .session-logs-compact,
.usage-page .session-timeseries-compact {
  animation: rise 0.25s var(--ease-out) backwards;
}

.usage-page .btn.btn-sm,
.usage-page button.btn-sm {
  min-height: 30px;
  padding: 7px 11px;
  font-size: 12px;
  line-height: 1.15;
}

.usage-page-header {
  display: grid;
  gap: 4px;
}

.usage-page-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-strong);
}

.usage-page-subtitle {
  max-width: 720px;
  color: var(--muted);
  font-size: 14px;
}

.usage-section-title {
  margin: 0;
}

.usage-loading-card,
.usage-empty-state,
.usage-overview-card,
.usage-mosaic,
.usage-left-card,
.sessions-card,
.session-detail-panel {
  position: relative;
  overflow: clip;
}

.usage-header {
  position: relative;
  overflow: visible;
}

.usage-header.pinned {
  position: sticky;
  top: 16px;
  z-index: 4;
  box-shadow: var(--shadow-md);
}

.usage-header {
  display: grid;
  gap: 14px;
}

.usage-header-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.usage-header-title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.usage-header-metrics {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.usage-refresh-indicator,
.usage-loading-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-subtle);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}

.usage-loading-badge {
  width: fit-content;
}

.usage-loading-spinner {
  width: 12px;
  height: 12px;
  border: 2px solid currentcolor;
  border-right-color: transparent;
  border-radius: 999px;
  animation: usage-spin 0.8s linear infinite;
}

.usage-loading-card {
  display: grid;
  gap: 16px;
}

.usage-loading-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.usage-loading-title-group {
  display: grid;
  gap: 8px;
}

.usage-loading-controls {
  display: flex;
  justify-content: flex-end;
}

.usage-loading-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.usage-skeleton-block {
  min-height: 96px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: linear-gradient(90deg, var(--bg-muted) 20%, var(--bg-hover) 50%, var(--bg-muted) 80%);
  background-size: 200% 100%;
  animation: usage-shimmer 1.35s ease-in-out infinite;
}

.usage-skeleton-block--tall {
  min-height: 128px;
}

.usage-controls {
  display: flex;
  flex: 1 1 100%;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.usage-presets,
.usage-date-range,
.chart-toggle,
.usage-query-actions,
.usage-filter-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.usage-date-range {
  flex-wrap: wrap;
}

.usage-date-range--loading {
  opacity: 0.75;
}

.usage-date-input,
.usage-select,
.usage-query-input,
.usage-filters-inline select,
.usage-filters-inline input[type="text"] {
  min-height: 36px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  transition:
    border-color 0.18s var(--ease-out),
    box-shadow 0.18s var(--ease-out),
    background 0.18s var(--ease-out);
}

.usage-date-input,
.usage-select {
  padding: 7px 10px;
}

.usage-date-input:focus,
.usage-select:focus,
.usage-query-input:focus,
.usage-filters-inline select:focus,
.usage-filters-inline input[type="text"]:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 65%, var(--border));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.usage-separator,
.usage-query-hint,
.sessions-card-count,
.session-bar-meta,
.session-summary-meta,
.usage-summary-sub,
.usage-mosaic-sub,
.usage-error-sub,
.context-weight-desc,
.timeseries-summary,
.session-log-meta,
.session-logs-header-count {
  color: var(--muted);
}

.usage-metric-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 11px;
  border: 1px solid color-mix(in srgb, var(--accent) 12%, var(--border));
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 8%, var(--card));
  font-size: 12px;
  color: var(--text);
}

.usage-metric-badge strong {
  color: var(--text-strong);
}

.usage-pin-btn,
.usage-export-button,
.usage-action-btn,
.session-copy-btn,
.context-expand-btn,
.session-close-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--secondary);
  color: var(--secondary-foreground);
  cursor: pointer;
  transition:
    transform 0.18s var(--ease-out),
    border-color 0.18s var(--ease-out),
    background 0.18s var(--ease-out),
    color 0.18s var(--ease-out),
    box-shadow 0.18s var(--ease-out);
}

.usage-pin-btn,
.usage-export-button,
.context-expand-btn,
.session-copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 34px;
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 600;
}

.usage-pin-btn:hover,
.usage-export-button:hover,
.usage-action-btn:hover,
.session-copy-btn:hover,
.context-expand-btn:hover,
.session-close-btn:hover {
  border-color: color-mix(in srgb, var(--accent) 28%, var(--border));
  background: color-mix(in srgb, var(--accent) 10%, var(--secondary));
  color: var(--text-strong);
}

.usage-pin-btn.active,
.usage-action-btn.usage-primary-btn,
.chart-toggle .toggle-btn.active {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--primary-foreground);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 28%, transparent);
}

.usage-primary-btn:disabled,
.usage-secondary-btn:disabled,
.usage-export-item:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.usage-secondary-btn {
  background: var(--secondary);
  color: var(--secondary-foreground);
}

.usage-query-section {
  display: grid;
  gap: 10px;
}

.usage-query-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.usage-query-input {
  width: 100%;
  padding: 10px 12px;
}

.usage-query-actions {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.usage-filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

details.usage-filter-select,
.usage-export-menu {
  position: relative;
}

details.usage-filter-select summary,
.usage-export-button {
  list-style: none;
}

details.usage-filter-select summary::-webkit-details-marker,
.usage-export-menu summary::-webkit-details-marker {
  display: none;
}

.usage-filter-select summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
  transition:
    border-color 0.18s var(--ease-out),
    box-shadow 0.18s var(--ease-out),
    background 0.18s var(--ease-out);
}

.usage-filter-select[open] summary,
.usage-filter-select summary:hover {
  border-color: color-mix(in srgb, var(--accent) 25%, var(--border));
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 10%, transparent);
}

.usage-filter-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 999px;
  background: var(--accent-subtle);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
}

.usage-filter-popover,
.usage-export-popover {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: min(320px, calc(100vw - 48px));
  padding: 12px;
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  background: var(--popover);
  color: var(--popover-foreground);
  box-shadow: var(--shadow-lg);
  z-index: 12;
}

.usage-export-popover {
  width: 220px;
}

.usage-filter-options,
.usage-export-list {
  display: grid;
  gap: 8px;
}

.usage-filter-option {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--bg-muted) 72%, transparent);
  font-size: 12px;
}

.usage-filter-option:hover {
  background: color-mix(in srgb, var(--accent) 10%, var(--bg-muted));
}

.usage-export-item {
  width: 100%;
  min-height: 36px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  text-align: left;
  font: inherit;
  cursor: pointer;
  transition:
    border-color 0.18s var(--ease-out),
    background 0.18s var(--ease-out),
    color 0.18s var(--ease-out);
}

.usage-export-item:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--accent) 24%, var(--border));
  background: color-mix(in srgb, var(--accent) 10%, var(--bg));
  color: var(--text-strong);
}

.usage-query-chips,
.usage-query-suggestions,
.usage-badges,
.usage-empty-state__features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.usage-query-chip,
.usage-query-suggestion,
.usage-badge,
.usage-empty-state__feature {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 16%, var(--border));
  background: color-mix(in srgb, var(--accent) 8%, var(--card));
  color: var(--text);
  font-size: 12px;
}

.usage-query-chip button {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
}

.usage-query-suggestion {
  cursor: pointer;
  transition:
    transform 0.18s var(--ease-out),
    border-color 0.18s var(--ease-out),
    background 0.18s var(--ease-out);
}

.usage-query-suggestion:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 28%, var(--border));
  background: color-mix(in srgb, var(--accent) 12%, var(--card));
}

.usage-callout {
  margin-top: 12px;
}

.usage-callout--tight {
  margin-top: 0;
}

.callout.warning {
  border-color: color-mix(in srgb, var(--warn) 22%, var(--border));
  background: var(--warn-subtle);
  color: var(--text);
}

.usage-empty-state {
  display: grid;
  gap: 12px;
  justify-items: start;
}

.usage-empty-state__title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-strong);
}

.usage-empty-state__subtitle {
  max-width: 640px;
}

.usage-empty-state__actions {
  margin-top: 4px;
}

.usage-empty-block {
  padding: 20px 14px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg-muted) 62%, transparent);
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.usage-empty-block--compact {
  padding: 12px;
  border-style: solid;
}

.usage-overview-card {
  display: grid;
  gap: 16px;
}

.usage-overview-layout {
  display: grid;
  gap: 16px;
}

.usage-summary-grid,
.session-summary-grid,
.usage-insights-grid,
.usage-mosaic-grid,
.context-breakdown-grid {
  display: grid;
  gap: 12px;
}

.usage-summary-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  grid-auto-flow: dense;
  align-items: stretch;
}

.usage-summary-card,
.session-summary-card {
  min-height: 118px;
  gap: 8px;
}

.usage-summary-card.stat,
.session-summary-card.stat {
  padding: 16px;
}

.usage-summary-card {
  display: grid;
  align-content: start;
  grid-auto-rows: min-content;
  min-height: 132px;
  border: 1px solid color-mix(in srgb, var(--border) 88%, transparent);
  border-radius: 18px;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--card) 92%, var(--bg-elevated)) 0%,
    color-mix(in srgb, var(--card) 84%, var(--bg-muted)) 100%
  );
  box-shadow: var(--shadow-sm);
}

.usage-summary-card--hero,
.usage-summary-card--half,
.usage-summary-card--medium,
.usage-summary-card--compact {
  grid-column: span 2;
}

.usage-summary-card--hero {
  min-height: 168px;
  gap: 12px;
  padding-block: 18px;
}

.usage-summary-card--throughput {
  background:
    radial-gradient(
      circle at top right,
      color-mix(in srgb, var(--accent) 14%, transparent) 0%,
      transparent 42%
    ),
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--card) 92%, var(--bg-elevated)) 0%,
      color-mix(in srgb, var(--card) 84%, var(--bg-muted)) 100%
    );
}

.usage-summary-title,
.session-summary-title,
.usage-insight-title,
.context-breakdown-title,
.sessions-sort span,
.cost-breakdown-header,
.usage-mosaic-section-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.usage-summary-value,
.session-summary-value {
  font-size: clamp(1.55rem, 2vw, 2rem);
  line-height: 1.05;
  color: var(--text-strong);
  overflow-wrap: anywhere;
}

.usage-summary-card--hero .usage-summary-value {
  font-size: clamp(2rem, 3vw, 2.8rem);
}

.usage-summary-value--compact {
  font-size: clamp(1.2rem, 1.75vw, 1.7rem);
  line-height: 1.15;
}

.usage-summary-value.good {
  color: var(--ok);
}

.usage-summary-value.warn {
  color: var(--warn);
}

.usage-summary-value.bad {
  color: var(--danger);
}

.usage-summary-sub,
.session-summary-meta,
.usage-list-sub,
.usage-error-sub {
  font-size: 12px;
}

.usage-summary-hint {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-left: 6px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-muted) 82%, transparent);
  color: var(--muted);
  font-size: 10px;
  cursor: help;
}

.usage-insights-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
}

.usage-insights-grid--tight {
  margin-top: 12px;
}

.usage-insight-card {
  display: grid;
  gap: 10px;
  min-height: 168px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--card) 82%, var(--bg-muted));
}

.usage-insight-card--wide {
  grid-column: 1 / -1;
}

.usage-list,
.usage-error-list,
.context-breakdown-list {
  display: grid;
  gap: 10px;
}

.usage-list-item,
.usage-error-row,
.context-breakdown-item {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
}

.usage-list-value {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  color: var(--text-strong);
}

.usage-error-rate {
  font-size: 16px;
  font-weight: 700;
  color: var(--danger);
}

.usage-mosaic {
  display: grid;
  gap: 14px;
}

.usage-mosaic-header,
.daily-chart-header,
.sessions-card-header,
.sessions-card-meta,
.timeseries-header-row,
.context-breakdown-header,
.session-detail-header,
.session-logs-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.usage-mosaic-title,
.usage-mosaic-total,
.session-detail-title {
  color: var(--text-strong);
}

.usage-mosaic-title,
.session-detail-title {
  font-size: 16px;
  font-weight: 700;
}

.usage-mosaic-total {
  font-size: 14px;
  font-weight: 700;
}

.usage-mosaic-grid {
  grid-template-columns: 1.1fr minmax(0, 1.4fr);
}

.usage-mosaic-section {
  display: grid;
  gap: 10px;
}

.usage-mosaic-section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.usage-daypart-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.usage-daypart-cell,
.usage-hour-cell {
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 14%, var(--border));
  background: color-mix(in srgb, var(--accent) 6%, transparent);
}

.usage-daypart-cell {
  min-height: 72px;
  padding: 10px;
  display: grid;
  gap: 6px;
  align-content: space-between;
}

.usage-daypart-label,
.usage-hour-labels {
  font-size: 11px;
  color: var(--muted);
}

.usage-daypart-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-strong);
}

.usage-hour-grid {
  display: grid;
  grid-template-columns: repeat(24, minmax(0, 1fr));
  gap: 6px;
}

.usage-hour-cell {
  min-height: 46px;
  cursor: pointer;
  transition:
    transform 0.18s var(--ease-out),
    border-color 0.18s var(--ease-out),
    box-shadow 0.18s var(--ease-out);
}

.usage-hour-cell:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 12%, transparent);
}

.usage-hour-cell.selected {
  border-color: color-mix(in srgb, var(--accent) 60%, transparent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 18%, transparent);
}

.usage-hour-labels {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
}

.usage-hour-legend {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 11px;
  color: var(--muted);
}

.usage-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

/* Expand to two columns when the detail panel column is present */
.usage-grid:has(.usage-grid-column:nth-child(2)) {
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
}

.usage-grid-column {
  display: grid;
  gap: 16px;
  min-width: 0;
  align-content: start;
}

.usage-left-card {
  display: grid;
  gap: 18px;
}

.daily-chart-compact,
.cost-breakdown,
.sessions-card,
.session-timeseries-compact,
.context-details-panel,
.session-logs-compact {
  display: grid;
  gap: 12px;
}

.daily-chart-bars {
  --bar-max-width: 32px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(18px, 1fr);
  align-items: end;
  gap: 6px;
  min-height: 244px;
  padding: 6px 2px 0;
  overflow-x: auto;
}

.daily-bar-wrapper {
  position: relative;
  display: grid;
  gap: 6px;
  align-items: end;
  justify-items: center;
  min-width: 18px;
  cursor: pointer;
}

.daily-bar-wrapper.selected .daily-bar {
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 18%, transparent);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
}

.daily-bar {
  width: min(100%, var(--bar-max-width));
  min-height: 6px;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--border));
  border-radius: 10px 10px 4px 4px;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--accent) 82%, white 6%),
    color-mix(in srgb, var(--accent) 52%, var(--bg-muted))
  );
  transition:
    transform 0.18s var(--ease-out),
    box-shadow 0.18s var(--ease-out);
}

.daily-bar-wrapper:hover .daily-bar {
  transform: translateY(-1px);
}

.daily-bar--stacked {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: none;
}

.daily-bar-total,
.daily-bar-label {
  font-size: 10px;
  color: var(--muted);
  white-space: nowrap;
}

.daily-bar-label--compact {
  font-size: 8px;
}

.daily-bar-tooltip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translate(-50%, 4px);
  width: max-content;
  max-width: 220px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--popover);
  color: var(--popover-foreground);
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.18s var(--ease-out),
    transform 0.18s var(--ease-out);
  z-index: 2;
  font-size: 11px;
}

.daily-bar-wrapper:hover .daily-bar-tooltip {
  opacity: 1;
  transform: translate(-50%, 0);
}

.cost-breakdown-bar {
  display: flex;
  width: 100%;
  min-height: 16px;
  overflow: hidden;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-muted) 82%, transparent);
  border: 1px solid var(--border);
}

.cost-breakdown-bar--compact {
  min-height: 18px;
}

.cost-breakdown-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

.legend-dot,
.cost-segment,
.context-segment,
.ts-bar {
  transition:
    opacity 0.18s var(--ease-out),
    fill 0.18s var(--ease-out),
    background 0.18s var(--ease-out);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
}

.cost-segment.output,
.legend-dot.output,
.ts-bar.output,
.ts-bar {
  background: var(--accent);
  fill: var(--accent);
}

.cost-segment.input,
.legend-dot.input,
.ts-bar.input,
.context-segment.files,
.legend-dot.files {
  background: var(--ok);
  fill: var(--ok);
}

.cost-segment.cache-write,
.legend-dot.cache-write,
.ts-bar.cache-write,
.context-segment.tools,
.legend-dot.tools {
  background: var(--warn);
  fill: var(--warn);
}

.cost-segment.cache-read,
.legend-dot.cache-read,
.ts-bar.cache-read,
.context-segment.skills,
.legend-dot.skills {
  background: var(--info);
  fill: var(--info);
}

.context-segment.system,
.legend-dot.system {
  background: var(--accent);
}

.cost-breakdown-total,
.context-total {
  font-size: 12px;
  color: var(--text);
}

.sessions-card {
  gap: 14px;
}

.sessions-card-stats {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.sessions-sort {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.sessions-sort select {
  min-height: 34px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
}

.session-bars {
  display: grid;
  gap: 8px;
  max-height: 520px;
  overflow-y: auto;
}

.session-bars--recent {
  max-height: 220px;
  margin-top: 6px;
  overflow: auto;
}

.session-bars--selected {
  max-height: 160px;
  margin-top: 6px;
  overflow: auto;
}

.session-bar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--card) 86%, var(--bg-muted));
  cursor: pointer;
  transition:
    transform 0.18s var(--ease-out),
    border-color 0.18s var(--ease-out),
    box-shadow 0.18s var(--ease-out);
}

.session-bar-row:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 22%, var(--border));
  box-shadow: 0 8px 18px color-mix(in srgb, black 12%, transparent);
}

.session-bar-row.selected {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--border));
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 14%, transparent);
}

.session-bar-label,
.session-bar-actions,
.session-detail-header-left {
  min-width: 0;
}

.session-bar-label {
  flex: 1 1 auto;
}

.session-bar-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 600;
  color: var(--text-strong);
}

.session-bar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.session-copy-btn {
  min-width: 58px;
}

.session-bar-value {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-strong);
}

.usage-more-sessions {
  padding: 8px;
  text-align: center;
  font-size: 11px;
  color: var(--muted);
}

.sessions-selected-group {
  display: grid;
  gap: 6px;
  margin-top: 10px;
}

.session-detail-panel {
  display: grid;
  gap: 14px;
}

.session-detail-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.session-detail-indicator {
  display: inline-flex;
  margin-left: 8px;
  color: var(--muted);
  font-size: 11px;
}

.session-detail-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  color: var(--text);
  font-size: 13px;
}

.session-close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 10px;
  font-size: 18px;
  line-height: 1;
}

.session-detail-content,
.session-detail-row,
.session-detail-bottom {
  display: grid;
  gap: 14px;
}

.session-detail-bottom {
  grid-template-columns: minmax(0, 1.8fr) minmax(0, 1fr);
}

.usage-badges {
  margin-bottom: 2px;
}

.session-summary-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.session-timeseries-compact,
.context-details-panel,
.session-logs-compact {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--card) 88%, var(--bg-muted));
}

.timeseries-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.timeseries-chart-wrapper {
  position: relative;
  cursor: crosshair;
}

.timeseries-svg {
  display: block;
  width: 100%;
  height: auto;
}

.ts-axis-label {
  fill: var(--muted);
  font-size: 8px;
}

.ts-bar {
  opacity: 0.9;
}

.ts-bar.dimmed {
  opacity: 0.26;
}

.cursor-handle {
  filter: drop-shadow(0 1px 2px color-mix(in srgb, black 30%, transparent));
}

.chart-handle-zone {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 18px;
  transform: translateX(-50%);
  cursor: col-resize;
}

.timeseries-summary {
  font-size: 12px;
}

.timeseries-summary__range {
  color: var(--accent);
  font-weight: 600;
}

.timeseries-breakdown {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.context-weight-desc {
  font-size: 12px;
}

.context-stacked-bar {
  display: flex;
  min-height: 18px;
  overflow: hidden;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-muted) 82%, transparent);
}

.context-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.context-breakdown-card {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg);
}

.context-breakdown-more {
  font-size: 12px;
  color: var(--muted);
}

.session-logs-header {
  align-items: flex-start;
}

.session-log-filters {
  margin: 0;
}

.usage-filters-inline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.usage-filters-inline select[multiple] {
  min-width: 150px;
  min-height: 112px;
  padding: 8px;
}

.usage-filters-inline input[type="text"] {
  flex: 1 1 220px;
  padding: 9px 10px;
}

.session-log-has-tools {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
}

.session-logs-list {
  display: grid;
  gap: 10px;
}

.session-log-entry {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg);
}

.session-log-entry.user {
  border-color: color-mix(in srgb, var(--accent) 18%, var(--border));
}

.session-log-entry.assistant {
  border-color: color-mix(in srgb, var(--info) 18%, var(--border));
}

.session-log-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  font-size: 12px;
}

.session-log-role {
  font-weight: 700;
  color: var(--text-strong);
}

.session-log-content {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 13px;
  line-height: 1.5;
}

.session-log-tools {
  display: grid;
  gap: 8px;
}

.session-log-tools summary {
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
}

.session-log-tools-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.session-log-tools-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 8%, var(--card));
  border: 1px solid color-mix(in srgb, var(--accent) 16%, var(--border));
  font-size: 11px;
}

:root[data-theme-mode="light"] .usage-daypart-cell,
:root[data-theme-mode="light"] .usage-hour-cell {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 8%, transparent);
}

:root[data-theme-mode="light"] .daily-bar-tooltip,
:root[data-theme-mode="light"] .usage-filter-popover,
:root[data-theme-mode="light"] .usage-export-popover {
  box-shadow: var(--shadow-md);
}

:root[data-theme-mode="light"] .session-bar-row,
:root[data-theme-mode="light"] .usage-insight-card,
:root[data-theme-mode="light"] .session-timeseries-compact,
:root[data-theme-mode="light"] .context-details-panel,
:root[data-theme-mode="light"] .session-logs-compact {
  background: var(--card);
}

@container (min-width: 1400px) {
  .usage-overview-layout {
    grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.95fr);
    align-items: start;
  }

  .usage-summary-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .usage-summary-card--hero {
    grid-column: span 4;
  }

  .usage-summary-card--half {
    grid-column: span 2;
  }

  .usage-summary-card--medium {
    grid-column: span 3;
  }

  .usage-summary-card--compact {
    grid-column: span 2;
  }

  .usage-insights-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@container (min-width: 1780px) {
  .usage-overview-layout {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  }

  .usage-insights-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .usage-error-list--hours {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }

  .usage-error-list--hours .usage-error-row {
    min-width: 0;
    align-items: flex-start;
    padding: 12px 14px;
    border: 1px solid color-mix(in srgb, var(--danger) 16%, var(--border));
    border-radius: 14px;
    background: color-mix(in srgb, var(--danger) 5%, var(--bg-muted));
    flex-direction: column;
    gap: 4px;
  }

  .usage-error-list--hours .usage-error-rate {
    font-size: 18px;
  }
}

@container (max-width: 1080px) {
  .usage-grid,
  .usage-mosaic-grid,
  .session-detail-bottom {
    grid-template-columns: minmax(0, 1fr);
  }

  .usage-summary-grid,
  .session-summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .usage-summary-card--hero,
  .usage-summary-card--half,
  .usage-summary-card--medium,
  .usage-summary-card--compact {
    grid-column: auto;
  }

  .usage-insights-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@container (max-width: 820px) {
  .usage-query-bar {
    grid-template-columns: minmax(0, 1fr);
  }

  .usage-header-metrics,
  .timeseries-controls {
    justify-content: flex-start;
  }

  .usage-loading-grid,
  .usage-summary-grid,
  .session-summary-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .usage-summary-card {
    min-height: 0;
  }
}

@media (max-width: 900px) {
  .usage-grid,
  .usage-mosaic-grid,
  .session-detail-bottom {
    grid-template-columns: minmax(0, 1fr);
  }

  .usage-summary-grid,
  .session-summary-grid,
  .context-breakdown-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .usage-summary-card--hero,
  .usage-summary-card--half,
  .usage-summary-card--medium,
  .usage-summary-card--compact {
    grid-column: auto;
  }

  .usage-insights-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 600px) {
  .usage-page {
    gap: 14px;
  }

  .usage-controls,
  .usage-filter-row,
  .usage-filters-inline {
    align-items: stretch;
  }

  .usage-date-range,
  .usage-query-actions,
  .usage-header-metrics,
  .sessions-card-meta,
  .timeseries-controls {
    justify-content: flex-start;
  }

  .usage-filter-popover,
  .usage-export-popover {
    right: auto;
    left: 0;
    width: min(320px, calc(100vw - 40px));
  }

  .usage-daypart-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .usage-hour-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .usage-hour-labels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .session-bar-row,
  .session-log-entry {
    align-items: flex-start;
  }

  .session-bar-row,
  .session-bar-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .usage-summary-grid,
  .session-summary-grid,
  .context-breakdown-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .usage-loading-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

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

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

  100% {
    background-position: -100% 0;
  }
}