:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #17202a;
  --muted: #5f6b7a;
  --border: #d7dde5;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --good: #16a34a;
  --bad: #dc2626;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

body.theme-dark {
  --bg: #111827;
  --surface: #1f2937;
  --text: #f8fafc;
  --muted: #a9b4c2;
  --border: #374151;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --good: #16a34a;
  --bad: #dc2626;
}

.container {
  width: min(1280px, calc(100% - 56px));
  margin-top: 48px;
  text-align: center;
}

h1 {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
}

.subtitle {
  margin: 8px 0 28px;
  color: var(--muted);
  font-size: 15px;
}

.hidden {
  display: none !important;
}

.session-view {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.session-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.metric {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.metric span {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 13px;
}

.metric strong {
  display: block;
  font-size: 22px;
}

.metric strong span {
  display: inline;
  margin: 0;
  color: inherit;
  font-size: inherit;
}

.settings {
  display: grid;
  gap: 10px;
  margin-top: 20px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  text-align: left;
  grid-template-columns: 1fr;
}

.settings > .advanced-master-toggle,
.settings > .settings-reset-zone,
.settings > .settings-history-zone {
  grid-column: 1 / -1;
}

.settings-columns {
  display: grid;
  grid-column: 1 / -1;
  gap: 12px;
  grid-template-columns: 1fr;
}

.settings-column {
  display: grid;
  gap: 12px;
  align-content: start;
  min-width: 0;
}

.advanced-master-toggle {
  justify-content: flex-start;
  gap: 10px;
  padding: 10px 12px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
}

.settings-section {
  display: grid;
  gap: 10px;
  padding: 14px 16px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.settings-section:first-child {
  padding-top: 16px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--text);
  font-size: 16px;
  font-weight: 700;
}

.audio-subsection-header {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.audio-subsection-header.beep-subsection {
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.section-note {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.advanced-settings {
  display: grid;
  gap: 10px;
}

.advanced-subsection-header {
  margin-top: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.advanced-sections {
  display: block;
}

.advanced-sections > .settings-section {
  margin: 0;
}

.field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(200px, 280px);
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
}

.mode-field {
  grid-template-columns: minmax(0, 1fr) minmax(240px, 340px);
}

.field > span,
.field > strong {
  min-width: 0;
}

.field select,
.field input {
  width: 100%;
}

input[type="number"] {
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  margin: 0;
  -webkit-appearance: none;
}

.interval-number-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 40px;
  gap: 6px;
  min-width: 0;
}

.interval-step-buttons {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 4px;
}

.interval-step-button {
  min-width: 0;
  min-height: 0;
  padding: 0 6px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.interval-step-button:not(:disabled):hover {
  color: var(--text);
}

.voice-field {
  align-items: start;
}

.voice-control-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.voice-control-group select {
  flex: 1 1 160px;
  min-width: 0;
}

.voice-test-button {
  width: auto;
  min-width: 104px;
  margin-top: 0;
}

.voice-control-group .voice-test-button {
  max-width: none;
}

.field strong {
  color: var(--text);
  font-weight: 700;
}

.advanced-badge {
  margin-left: 6px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.thresholds-block {
  display: grid;
  gap: 12px;
  padding: 14px 0 2px;
}

.thresholds-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.icon-button {
  width: 24px;
  height: 24px;
  padding: 0;
  border-radius: 999px;
  line-height: 1;
  font-size: 13px;
  font-weight: 700;
}

.info-button {
  border-color: var(--border);
}

.preset-row {
  display: flex;
  gap: 8px;
}

.preset-row .secondary-button {
  flex: 1;
  max-width: none;
  margin-top: 0;
}

.threshold-help {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.threshold-help .tooltip-box {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 10;
  display: block;
  width: max-content;
  max-width: min(240px, calc(100vw - 48px));
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 120ms ease, transform 120ms ease;
}

.threshold-help:hover .tooltip-box,
.threshold-help:focus-within .tooltip-box,
.threshold-help.tooltip-open .tooltip-box {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.child-field {
  margin-left: 18px;
  padding-left: 14px;
  border-left: 2px solid var(--border);
}

.locked {
  opacity: 0.58;
}

.toggle-field {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

input,
button,
select {
  box-sizing: border-box;
  padding: 10px 12px;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 16px;
}

input[type="range"] {
  width: 100%;
  padding: 0;
  accent-color: var(--accent);
}

input[type="checkbox"] {
  width: 16px;
  height: 16px;
  padding: 0;
  accent-color: var(--accent);
}

input:disabled,
select:disabled {
  cursor: not-allowed;
  background: var(--bg);
  color: var(--muted);
}

button {
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease, transform 120ms ease, box-shadow 120ms ease, opacity 120ms ease;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.primary-button {
  width: 100%;
  margin-top: 16px;
  border-color: var(--accent);
  background: var(--accent);
  color: white;
  font-weight: 700;
}

.primary-button:not(:disabled):hover {
  border-color: var(--accent-hover);
  background: var(--accent-hover);
}

.settings-reset-zone {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.history-reset-zone {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.history-reset-note {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.secondary-button {
  width: 100%;
  max-width: 320px;
  margin-top: 14px;
  background: var(--surface);
  font-weight: 700;
}

.secondary-button:not(:disabled):hover {
  border-color: var(--accent);
  background: rgba(37, 99, 235, 0.06);
  color: var(--text);
  box-shadow: 0 1px 0 rgba(0,0,0,0.04), 0 6px 14px rgba(37, 99, 235, 0.08);
  transform: translateY(-1px);
}

.secondary-button:not(:disabled):active,
.icon-square-button:not(:disabled):active,
.primary-button:not(:disabled):active {
  transform: translateY(0);
  box-shadow: none;
}

.danger-button {
  border-color: var(--bad);
  color: var(--bad);
}

.danger-button:not(:disabled):hover {
  border-color: var(--bad);
  background: var(--bad);
  color: white;
}

.icon-square-button:not(:disabled):hover {
  border-color: var(--accent);
  background: rgba(37, 99, 235, 0.06);
  box-shadow: 0 1px 0 rgba(0,0,0,0.04), 0 6px 14px rgba(37, 99, 235, 0.08);
  transform: translateY(-1px);
}

.settings-reset-button {
  display: block;
  margin: 0 auto;
}

.history-reset-zone .secondary-button {
  margin-top: 0;
}

.settings-history-zone {
  margin-top: 14px;
}

.history-view {
  text-align: left;
}

.history-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}

.history-header h2 {
  margin: 0;
  text-align: left;
  font-size: 24px;
  justify-self: start;
}

.history-back-button {
  justify-self: start;
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  margin-top: 0;
  padding: 0;
}

.history-back-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.history-utility-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 12px;
}

.history-json-button {
  flex: 0 0 132px;
  min-width: 132px;
  margin-top: 0;
  text-align: center;
  white-space: nowrap;
}

.history-filters {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 20;
  display: grid;
  gap: 12px;
  width: min(290px, calc(100vw - 48px));
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 10px 24px rgba(0,0,0,0.12);
}

.history-filter-field {
  grid-template-columns: 1fr 200px;
}

.history-filter-actions {
  display: flex;
  justify-content: flex-end;
}

.history-filter-actions .secondary-button {
  margin-top: 0;
}

.history-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
  margin-top: 14px;
}

.history-analytics {
  margin-top: 14px;
}

.history-analytics-header,
.history-chart-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 10px 14px;
  margin-top: 10px;
}

.history-analytics-header {
  justify-content: space-between;
  align-items: center;
  margin-top: 0;
}

.history-section-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.history-chart-mode-field {
  min-width: 260px;
  max-width: 320px;
}

.history-chart-mode-note {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.analytics-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 10px;
  justify-items: center;
}

.chart-card {
  display: grid;
  width: min(100%, 760px);
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.chart-card-wide {
  grid-column: 1 / -1;
  width: min(100%, 740px);
}

.chart-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.chart-back-button {
  padding: 7px 11px;
  font-size: 12px;
  white-space: nowrap;
}

.chart-card-header h3 {
  margin: 0;
  color: var(--text);
  font-size: 16px;
  font-weight: 700;
}

.chart-legend {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.3;
}

.chart-legend-multi {
  flex-wrap: wrap;
  gap: 10px 14px;
}

.chart-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.chart-legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--accent);
  flex: 0 0 auto;
}

.chart-legend-swatch-interval {
  background: var(--accent);
}

.chart-legend-swatch-response {
  background: var(--good);
}

.chart-panel {
  position: relative;
  min-height: 210px;
}

.chart-surface {
  width: 100%;
}

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

.chart-point {
  transition: opacity 120ms ease, stroke-width 120ms ease;
}

.chart-details {
  position: absolute;
  left: var(--chart-tooltip-left, 50%);
  top: var(--chart-tooltip-top, 50%);
  z-index: 2;
  display: block;
  width: max-content;
  max-width: min(220px, calc(100% - 16px));
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 12px 28px rgba(16, 24, 40, 0.14);
  color: var(--text);
  font-size: 12px;
  line-height: 1.35;
  pointer-events: none;
  transform: var(--chart-tooltip-transform, translate(-50%, calc(-100% - 10px)));
  overflow: hidden;
}

.chart-details[hidden] {
  display: none !important;
}

.chart-tooltip-title {
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
  white-space: normal;
  word-break: break-word;
}

.chart-tooltip-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  white-space: normal;
}

.chart-tooltip-swatch {
  width: 10px;
  height: 10px;
  margin-top: 3px;
  border-radius: 999px;
  flex: 0 0 auto;
}

.chart-tooltip-row + .chart-tooltip-row {
  margin-top: 4px;
}

.chart-tooltip-row strong {
  color: var(--text);
  font-weight: 700;
  text-align: right;
  min-width: 0;
  word-break: break-word;
}

.chart-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 210px;
  padding: 18px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.chart-caption {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.history-stat {
  min-height: 74px;
  padding: 12px 13px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.history-stat span {
  display: block;
  min-height: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.3;
}

.history-stat strong {
  display: block;
  margin-top: 6px;
  font-size: 22px;
}

.history-section {
  margin-top: 14px;
}

.history-section-header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.history-filter-anchor {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.history-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.history-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.history-pagination-summary {
  flex: 1 1 auto;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.history-pagination-controls {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.history-pagination-controls.is-single-page {
  opacity: 0.55;
}

.history-pagination-controls.is-single-page .history-pagination-buttons {
  pointer-events: none;
}

.history-pagination-controls.is-single-page .history-pagination-button {
  cursor: default;
  opacity: 0.85;
}

.history-pagination-indicator {
  white-space: nowrap;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
}

.history-pagination-buttons {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
}

.history-pagination-button {
  margin-top: 0;
  min-width: 0;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 1;
  white-space: nowrap;
}

.history-refresh-icon {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  padding: 0;
}

.history-refresh-icon svg {
  width: 18px;
  height: 18px;
}

@media (max-width: 640px) {
  .history-header {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: start;
  }

  .history-actions {
    grid-column: 1 / -1;
    justify-self: stretch;
  }

  .history-actions .secondary-button {
    flex: 1 1 132px;
    min-width: 0;
  }

  .history-analytics-header {
    align-items: flex-start;
  }

  .history-section-header {
    align-items: flex-start;
  }

  .history-section-actions {
    margin-left: auto;
  }

  .history-pagination {
    flex-direction: column;
    align-items: stretch;
  }

  .history-pagination-summary {
    width: 100%;
  }

  .history-pagination-controls {
    width: 100%;
    justify-content: space-between;
    flex-wrap: wrap;
  }

  .history-pagination-buttons {
    margin-left: auto;
  }
}

.icon-square-button {
  position: relative;
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.icon-square-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-badge {
  position: absolute;
  top: -6px;
  right: -6px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  font-size: 10px;
  line-height: 16px;
  text-align: center;
}

.history-item {
  display: grid;
  gap: 7px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.history-item-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.history-item-date {
  font-weight: 700;
}

.history-status {
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.history-status.completed {
  color: var(--good);
  border-color: var(--good);
}

.history-status.manual {
  color: var(--bad);
  border-color: var(--bad);
}

.history-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  color: var(--muted);
  font-size: 13px;
}

.history-item-meta span {
  white-space: nowrap;
}

.history-item-trend {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 2px;
  border-top: 1px dashed var(--border);
  color: var(--muted);
  font-size: 12px;
}

.history-trend-toggle {
  margin-top: 0;
  min-width: 150px;
  padding: 7px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  box-shadow: 0 1px 0 rgba(0,0,0,0.03);
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease, box-shadow 120ms ease, transform 120ms ease;
}

.history-trend-toggle:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0,0,0,0.06);
}

.history-trend-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.history-trend-toggle.is-included {
  border-color: rgba(22, 163, 74, 0.55);
  color: var(--good);
  background: rgba(22, 163, 74, 0.08);
}

.history-trend-toggle.is-excluded {
  border-color: var(--border);
  color: var(--muted);
  background: rgba(95, 107, 122, 0.05);
}

.history-trend-toggle:disabled {
  opacity: 0.7;
  transform: none;
  box-shadow: none;
}

.history-empty {
  padding: 18px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
}

.answer-input {
  display: block;
  width: 100%;
  max-width: 240px;
  margin: 0 auto;
  text-align: center;
}

#feedback {
  width: min(100%, 240px);
  min-height: 40px;
  margin: 16px auto;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
  box-sizing: border-box;
}

.dot {
  height: 12px;
  width: 12px;
  border-radius: 50%;
  display: inline-block;
  margin: 0;
}

.feedback-slot {
  border: 1px solid var(--border);
  background: transparent;
  transition: background-color 120ms linear, border-color 120ms linear, opacity 120ms linear;
}

.feedback-slot.green {
  background: var(--good);
  border-color: var(--good);
}

.feedback-slot.red {
  background: var(--bad);
  border-color: var(--bad);
}

.feedback-slot.empty {
  opacity: 0.35;
}

.green {
  background: var(--good);
}

.red {
  background: var(--bad);
}

#intervalStats {
  min-height: 18px;
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.results-interval-stats {
  margin-top: 20px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.results-interval-stats h3 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 600;
}

.results-interval-stats #resultsIntervalStats {
  min-height: 18px;
  font-size: 14px;
  color: var(--muted);
}

.results-view {
  text-align: left;
}

.results-view h2 {
  margin: 0 0 16px;
  text-align: center;
  font-size: 24px;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}

.result-metric {
  min-height: 86px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.result-metric span {
  display: block;
  min-height: 34px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.3;
}

.result-metric strong {
  display: block;
  margin-top: 8px;
  font-size: 24px;
}

.footer {
  width: min(1120px, calc(100% - 48px));
  margin-top: 48px;
  padding-bottom: 32px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

.footer a {
  color: var(--accent);
}

@media (max-width: 420px) {
  .history-header {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 10px;
  }

  .history-header h2 {
    font-size: 22px;
  }

  .field {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .child-field {
    margin-left: 8px;
  }

  .session-metrics {
    grid-template-columns: 1fr;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }

  .history-summary {
    grid-template-columns: 1fr;
  }

  .history-item-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .history-item-trend {
    flex-direction: column;
    align-items: flex-start;
  }

  .history-trend-toggle {
    width: 100%;
    min-width: 0;
  }

  .history-utility-actions {
    justify-content: stretch;
  }

  .history-json-button {
    flex: 1 1 132px;
    min-width: 0;
  }

  .history-filter-field {
    grid-template-columns: 1fr;
  }

  .history-filters {
    width: min(100vw - 32px, 320px);
  }
}

@media (min-width: 900px) {
  .history-view {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    align-items: start;
  }

  .history-header {
    grid-template-columns: auto 1fr;
    align-items: center;
  }

  .history-summary {
    margin-top: 0;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .settings-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1600px) {
  .analytics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-items: stretch;
  }

  .chart-card {
    width: 100%;
  }

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

  .history-item-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 8px 12px;
  }

  .history-item-meta span {
    white-space: normal;
  }

}