:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-soft: #fbfcff;
  --panel-muted: #f7f9fd;
  --ink: #172033;
  --ink-soft: #26344d;
  --control-ink: #1f2a3d;
  --muted: #647085;
  --line: #d9e0ea;
  --line-strong: #bdc8d8;
  --blue: #3f6fd8;
  --blue-strong: #163f9f;
  --blue-soft: #edf3ff;
  --green: #248f6a;
  --orange: #c77725;
  --shadow: 0 18px 44px rgba(23, 32, 51, 0.1);
  --field-bg: #ffffff;
  --field-focus: #e7eefc;
  --danger: #b42318;
  --github-bg: #172033;
  --github-bg-hover: #2f3f5b;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1120;
  --panel: #111827;
  --panel-soft: #151f32;
  --panel-muted: #182338;
  --ink: #e5edf8;
  --ink-soft: #cbd7e6;
  --control-ink: #dbe7f6;
  --muted: #94a3b8;
  --line: #2a374d;
  --line-strong: #3b4b63;
  --blue: #7aa2ff;
  --blue-strong: #adc6ff;
  --blue-soft: #17264a;
  --green: #4bd0a0;
  --orange: #f0ad55;
  --shadow: 0 18px 44px rgba(0, 0, 0, 0.36);
  --field-bg: #0f172a;
  --field-focus: #21345c;
  --danger: #fb7185;
  --github-bg: #263449;
  --github-bg-hover: #32425b;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  color: var(--ink);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

.demo-shell,
.gallery-shell {
  min-height: 100vh;
}

body.demo-page {
  height: 100vh;
  overflow: hidden;
}

body.demo-page .demo-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  min-height: 0;
  overflow: hidden;
}

.demo-header {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px clamp(18px, 3vw, 32px);
  background: var(--panel-soft);
  border-bottom: 1px solid var(--line);
}

.demo-header > div {
  min-width: 0;
}

.demo-header h1 {
  margin: 2px 0 0;
  font-size: clamp(20px, 2vw, 28px);
  line-height: 1.05;
  font-weight: 760;
  letter-spacing: 0;
}

.eyebrow {
  margin: 0;
  color: var(--green);
  font-size: 11px;
  font-weight: 760;
  text-transform: uppercase;
}

.lede,
.demo-header p:last-child {
  display: none;
}

.demo-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.demo-links a,
.case-card {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--field-bg);
  color: var(--control-ink);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.demo-links a:hover,
.case-card:hover {
  border-color: var(--blue);
  color: var(--blue-strong);
}

.demo-links a.demo-link--github {
  border-color: var(--github-bg);
  background: var(--github-bg);
  color: #ffffff;
}

.demo-links a.demo-link--github:hover {
  border-color: var(--github-bg-hover);
  background: var(--github-bg-hover);
  color: #ffffff;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--field-bg);
  color: var(--control-ink);
  font: inherit;
  font-size: 12px;
  font-weight: 760;
  white-space: nowrap;
  cursor: pointer;
}

.theme-toggle::before {
  content: "";
  width: 12px;
  height: 12px;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: currentColor;
  box-shadow: inset -4px -3px 0 var(--field-bg);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  border-color: var(--blue);
  color: var(--blue-strong);
  outline: none;
}

.theme-toggle:focus-visible {
  box-shadow: 0 0 0 3px var(--field-focus);
}

.demo-stage {
  padding: clamp(16px, 4vw, 42px);
}

body.demo-page .demo-stage {
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  padding: clamp(12px, 2vw, 24px);
}

body.demo-page .demo-stage:not(.demo-stage--with-controls) {
  display: flex;
}

.demo-stage--with-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 360px);
  align-items: start;
  gap: 18px;
}

body.demo-page .demo-stage--with-controls {
  align-items: stretch;
}

.demo-stage--large {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
}

.chart-frame {
  width: min(1180px, 100%);
  height: min(74vh, 760px);
  min-height: 430px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

body.demo-page .chart-frame {
  height: 100%;
  min-height: 0;
}

#chart {
  width: 100%;
  height: 100%;
}

#chart.demo-chart--interactive {
  cursor: grab;
  touch-action: none;
}

#chart.demo-chart--interactive.is-panning {
  cursor: grabbing;
}

.demo-controls {
  max-height: min(74vh, 760px);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

body.demo-page .demo-controls {
  height: 100%;
  max-height: none;
  min-height: 0;
}

.demo-controls__header {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 14px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-soft);
}

.demo-controls__header h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 760;
  letter-spacing: 0;
}

.demo-controls__actions,
.demo-option-editor__footer {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.demo-control-button {
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--field-bg);
  color: var(--ink-soft);
  font: inherit;
  font-size: 12px;
  font-weight: 760;
  white-space: nowrap;
  cursor: pointer;
}

.demo-control-button:hover {
  border-color: var(--blue);
  color: var(--blue-strong);
}

.demo-control-button--primary {
  border-color: #315fc0;
  background: #3f6fd8;
  color: #ffffff;
}

.demo-control-button--primary:hover {
  border-color: #214aa3;
  color: #ffffff;
  background: #315fc0;
}

.demo-interactions {
  display: grid;
  gap: 10px;
  padding: 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.demo-interactions__title {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0;
}

.demo-interactions__view,
.demo-interactions__row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.demo-interactions__view {
  justify-content: space-between;
}

.demo-interactions__zoom {
  color: var(--blue-strong);
  font-size: 13px;
  font-weight: 780;
  font-variant-numeric: tabular-nums;
}

.demo-interactions__label {
  flex: 0 0 46px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 720;
}

.demo-interactions__value {
  min-width: 0;
  overflow: hidden;
  color: var(--ink);
  font-size: 12px;
  font-weight: 650;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.demo-controls__form {
  display: grid;
  gap: 12px;
  padding: 14px;
}

.demo-perf-summary,
.demo-perf-results {
  display: grid;
  gap: 8px;
  padding: 14px;
  border-bottom: 1px solid var(--line);
}

.demo-controls > .demo-perf-panel .demo-controls__header {
  position: static;
  border-top: 1px solid var(--line);
}

.demo-controls > .demo-perf-panel .demo-perf-results {
  border-bottom: 0;
}

.demo-perf-summary div,
.demo-perf-results div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  min-width: 0;
}

.demo-perf-summary span,
.demo-perf-results span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 720;
}

.demo-perf-summary strong,
.demo-perf-results strong {
  color: var(--ink);
  font-size: 13px;
  font-weight: 780;
  font-variant-numeric: tabular-nums;
}

.demo-perf-results[data-over-budget="true"] strong:last-child {
  color: var(--danger);
}

.demo-control {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.demo-control__topline {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  min-width: 0;
}

.demo-control__label {
  min-width: 0;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 740;
}

.demo-control__value {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.demo-control input,
.demo-control select,
.demo-control textarea {
  width: 100%;
  min-height: 32px;
  accent-color: var(--blue);
}

.demo-control input[type="checkbox"] {
  width: 18px;
  min-height: 18px;
}

.demo-control input[type="color"] {
  width: 100%;
  height: 34px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--field-bg);
}

.demo-control input[type="text"],
.demo-control select,
.demo-control textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--field-bg);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
}

.demo-control input[type="text"] {
  padding: 0 10px;
}

.demo-control textarea {
  min-height: 104px;
  resize: vertical;
  padding: 8px 10px;
  font: 12px/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.demo-control--checkbox {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.demo-control--checkbox .demo-control__topline {
  grid-column: 1;
}

.demo-control--checkbox input {
  grid-column: 2;
  grid-row: 1;
}

.demo-option-editor {
  border-top: 1px solid var(--line);
  padding: 0 14px 14px;
}

.demo-option-editor summary {
  min-height: 42px;
  padding-top: 12px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 760;
  cursor: pointer;
}

.demo-option-editor__textarea {
  width: 100%;
  height: 220px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
  color: var(--ink);
  background: var(--panel-soft);
  font: 12px/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.demo-option-editor__footer {
  padding-top: 10px;
}

.demo-option-editor__error {
  flex: 1;
  min-width: 0;
  color: var(--danger);
  font-size: 12px;
  font-weight: 700;
}

.chart-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 18px;
  width: min(1180px, calc(100% - 36px));
  margin: 24px auto 60px;
}

.chart-gallery-card {
  display: flex;
  overflow: hidden;
  min-width: 0;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--control-ink);
  text-decoration: none;
  box-shadow: 0 10px 30px rgba(23, 32, 51, 0.07);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.chart-gallery-card:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
  color: var(--blue-strong);
  box-shadow: 0 16px 38px rgba(23, 32, 51, 0.11);
}

.chart-gallery-card:focus-visible {
  outline: 3px solid var(--field-focus);
  outline-offset: 3px;
}

.chart-gallery-card__media {
  display: flex;
  overflow: hidden;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 10;
  border-bottom: 1px solid var(--line);
  background: var(--panel-muted);
}

.chart-gallery-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.chart-gallery-card__title {
  display: flex;
  align-items: center;
  min-height: 46px;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 760;
  line-height: 1.25;
  letter-spacing: 0;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  width: min(1120px, calc(100% - 36px));
  margin: 28px auto 60px;
}

.case-card {
  min-height: 88px;
  padding: 18px;
  justify-content: flex-start;
  border-left: 4px solid var(--blue);
  box-shadow: 0 8px 28px rgba(23, 32, 51, 0.06);
}

.case-card:nth-child(3n + 2) {
  border-left-color: var(--green);
}

.case-card:nth-child(3n) {
  border-left-color: var(--orange);
}

.fisheye-gallery-intro {
  width: min(1120px, calc(100% - 36px));
  margin: 28px auto 10px;
}

.fisheye-gallery-intro h2 {
  margin: 0 0 6px;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.2;
  letter-spacing: 0;
}

.fisheye-gallery-intro p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.fisheye-chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  width: min(1120px, calc(100% - 36px));
  margin: 18px auto 60px;
}

.fisheye-chart-card {
  overflow: hidden;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 10px 30px rgba(23, 32, 51, 0.07);
}

.fisheye-chart-card h2 {
  margin: 0;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.25;
  letter-spacing: 0;
}

.fisheye-chart-card__chart {
  height: 210px;
}

.fisheye-chart-card__status {
  display: block;
  min-height: 28px;
  padding: 6px 12px;
  border-top: 1px solid var(--line);
  color: var(--green);
  background: var(--panel-soft);
  font-size: 11px;
  font-weight: 760;
  text-transform: uppercase;
}

.fisheye-chart-card--error .fisheye-chart-card__status {
  color: var(--danger);
  text-transform: none;
}

.layout-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  gap: 18px;
  width: min(1120px, calc(100% - 36px));
  margin: 28px auto 60px;
}

.layout-card {
  min-height: 330px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.layout-card h2 {
  margin: 0;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 15px;
  letter-spacing: 0;
}

.layout-card svg {
  display: block;
  width: 100%;
  height: 286px;
}

@media (max-width: 760px) {
  .demo-header {
    align-items: center;
    flex-direction: row;
    gap: 10px;
    padding: 8px 14px;
  }

  .demo-header h1 {
    font-size: 20px;
  }

  .demo-links {
    gap: 6px;
    justify-content: flex-end;
  }

  .demo-links a,
  .theme-toggle {
    min-height: 28px;
    padding: 0 8px;
    font-size: 11px;
  }

  .chart-frame {
    height: 68vh;
    min-height: 390px;
  }

  .demo-stage--with-controls {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(260px, 56%) minmax(0, 1fr);
  }

  .demo-controls {
    max-height: none;
  }

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

  .chart-gallery {
    grid-template-columns: 1fr;
    gap: 14px;
    width: min(420px, calc(100% - 28px));
    margin: 18px auto 42px;
  }
}