:root {
  --surface: #fbf8ff;
  --surface-dim: #d9d9e6;
  --surface-bright: #fbf8ff;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f3f2ff;
  --surface-container: #ededfa;
  --surface-container-high: #e8e7f4;
  --surface-container-highest: #e2e1ef;
  --on-surface: #191b24;
  --on-surface-variant: #434656;
  --inverse-surface: #2e303a;
  --inverse-on-surface: #f0effd;
  --outline: #747688;
  --outline-variant: #c4c5d9;
  --primary: #2d5afe;
  --primary-deep: #003fde;
  --on-primary: #ffffff;
  --secondary: #8b5cf6;
  --tertiary: #f59e0b;
  --success: #10b981;
  --error: #ba1a1a;
  --background: #f8fafc;
  --deep-obsidian: #121212;
  --radius-sm: 0.25rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --space-base: 8px;
  --space-margin: 16px;
  --space-gutter: 12px;
  --shadow-soft: 0 18px 48px rgba(25, 27, 36, 0.08);
  --shadow-subtle: 0 10px 24px rgba(45, 90, 254, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--background);
}

body {
  margin: 0;
  color: var(--on-surface);
  background:
    linear-gradient(135deg, rgba(45, 90, 254, 0.08), transparent 36rem),
    linear-gradient(315deg, rgba(16, 185, 129, 0.08), transparent 34rem),
    var(--background);
  font-family: "Lexend", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

button,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

code {
  color: var(--primary-deep);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}

.app-shell {
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 32px;
}

.dashboard-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: end;
  margin-bottom: 24px;
}

.header-copy {
  max-width: 840px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--primary-deep);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 20px;
  line-height: 1.35;
}

.header-copy p:last-child,
.chart-card-header p {
  margin-bottom: 0;
  color: var(--on-surface-variant);
}

.dataset-status {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-xl);
  background: var(--surface-container-lowest);
  box-shadow: var(--shadow-subtle);
  color: var(--on-surface-variant);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 9999px;
  background: var(--tertiary);
  box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.16);
}

.status-dot-success {
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.16);
}

.status-dot-error {
  background: var(--error);
  box-shadow: 0 0 0 4px rgba(186, 26, 26, 0.16);
}

.dashboard-intro {
  margin-bottom: 24px;
  padding: 0;
  border: 1px solid rgba(196, 197, 217, 0.92);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(243, 242, 255, 0.96)),
    var(--surface-container-lowest);
  box-shadow: 0 16px 40px rgba(25, 27, 36, 0.06);
  overflow: hidden;
}

.intro-header {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  justify-content: space-between;
  padding: 28px 32px;
}

.intro-content {
  max-width: 1040px;
}

.intro-eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dashboard-intro h1 {
  margin: 0 0 10px;
  color: var(--on-surface);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.15;
  letter-spacing: 0;
}

.intro-summary {
  max-width: 820px;
  margin: 0;
  color: var(--on-surface-variant);
  font-size: 15px;
  line-height: 1.6;
}

.intro-toggle {
  flex: 0 0 auto;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid rgba(45, 90, 254, 0.22);
  border-radius: 9999px;
  background: rgba(45, 90, 254, 0.08);
  color: var(--primary-deep);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
  transition:
    background 160ms ease,
    border-color 160ms ease,
    transform 160ms ease;
}

.intro-toggle:hover {
  border-color: rgba(45, 90, 254, 0.42);
  background: rgba(45, 90, 254, 0.14);
  transform: translateY(-1px);
}

.intro-body {
  padding: 0 32px 32px;
}

.dashboard-intro.is-collapsed .intro-body {
  display: none;
}

.dashboard-intro.is-collapsed .intro-header {
  align-items: center;
}

.dashboard-intro p {
  max-width: 1040px;
  margin-bottom: 12px;
  color: var(--on-surface-variant);
  line-height: 1.65;
}

.dashboard-intro p:last-child {
  margin-bottom: 0;
}

.intro-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.intro-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--surface-variant);
  border-radius: 18px;
  background: var(--surface-container-lowest);
  box-shadow: var(--shadow-subtle);
}

.intro-card h3 {
  margin: 0 0 8px;
  color: var(--on-surface);
  font-size: 16px;
  line-height: 1.35;
}

.intro-card p {
  margin: 0;
  color: var(--on-surface-variant);
  font-size: 14px;
  line-height: 1.6;
}

.filter-panel,
.chart-card {
  border: 1px solid rgba(196, 197, 217, 0.82);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-soft);
}

.filter-panel {
  padding: 20px;
  margin-bottom: 20px;
}

.section-heading,
.chart-card-header {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  justify-content: space-between;
}

.button-primary {
  min-height: 44px;
  padding: 0 18px;
  border: 0;
  border-radius: 9999px;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 12px 20px rgba(45, 90, 254, 0.2);
  transition:
    background 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease;
}

.button-primary:hover {
  background: var(--primary-deep);
  box-shadow: 0 14px 28px rgba(45, 90, 254, 0.26);
  transform: translateY(-1px);
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(160px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.filter-grid-compact {
  grid-template-columns: repeat(4, minmax(160px, 1fr));
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  color: var(--on-surface-variant);
  font-size: 12px;
  font-weight: 700;
}

.field select {
  width: 100%;
  min-height: 44px;
  padding: 0 36px 0 12px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  background:
    linear-gradient(45deg, transparent 50%, var(--on-surface-variant) 50%) right 16px center / 6px 6px no-repeat,
    linear-gradient(135deg, var(--on-surface-variant) 50%, transparent 50%) right 10px center / 6px 6px no-repeat,
    var(--surface-container-lowest);
  color: var(--on-surface);
  appearance: none;
}

.field select:hover,
.field select:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 4px rgba(45, 90, 254, 0.12);
}

.filter-summary {
  margin: 16px 0 0;
  color: var(--on-surface-variant);
  font-size: 13px;
  font-weight: 500;
}

.app-message {
  margin-bottom: 20px;
  padding: 14px 16px;
  border: 1px solid rgba(245, 158, 11, 0.42);
  border-radius: var(--radius-lg);
  background: rgba(245, 158, 11, 0.1);
  color: #6f3d00;
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
  padding: 8px;
  border: 1px solid rgba(196, 197, 217, 0.82);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow-subtle);
}

.tab-button {
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 9999px;
  background: transparent;
  color: var(--on-surface-variant);
  font-size: 14px;
  font-weight: 700;
  transition:
    background 160ms ease,
    color 160ms ease,
    border-color 160ms ease;
}

.tab-button:hover {
  border-color: var(--outline-variant);
  background: var(--surface-container-low);
  color: var(--on-surface);
}

.tab-button.is-active {
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 10px 20px rgba(45, 90, 254, 0.2);
}

.tab-panel {
  display: grid;
  gap: 20px;
}

.tab-panel[hidden] {
  display: none;
}

.panel-description {
  max-width: 920px;
  margin: 12px 0 0;
  color: var(--on-surface-variant);
  font-size: 14px;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.kpi-grid-compact {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 0;
}

.kpi-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  background: var(--surface-container-lowest);
  box-shadow: var(--shadow-subtle);
}

.kpi-card span,
.kpi-card small {
  display: block;
  color: var(--on-surface-variant);
  font-size: 12px;
  font-weight: 600;
}

.kpi-card strong {
  display: block;
  margin: 8px 0 4px;
  overflow-wrap: anywhere;
  color: var(--on-surface);
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  line-height: 1.1;
}

.kpi-card strong.kpi-positive {
  color: var(--success);
}

.kpi-card strong.kpi-negative {
  color: var(--error);
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.chart-card {
  min-width: 0;
  padding: 20px;
}

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

.chart-card-header {
  margin-bottom: 16px;
}

.chart-card-header p {
  max-width: 420px;
  font-size: 13px;
}

.chart-host {
  position: relative;
  min-width: 0;
  width: 100%;
  overflow: hidden;
  border: 1px solid rgba(196, 197, 217, 0.52);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(243, 242, 255, 0.62), rgba(255, 255, 255, 0.72)),
    var(--surface-container-lowest);
}

.chart-host-tall {
  min-height: 620px;
}

.chart-host-tree {
  min-height: 900px;
}

.chart-host-wide {
  min-height: 650px;
}

.chart-host-sunburst {
  min-height: 720px;
}

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

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
  padding: 10px 12px 14px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--on-surface-variant);
  font-size: 12px;
  font-weight: 600;
}

.legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 9999px;
  border: 1px solid rgba(25, 27, 36, 0.12);
}

.empty-state {
  display: grid;
  min-height: inherit;
  place-items: center;
  padding: 32px;
  color: var(--on-surface-variant);
  text-align: center;
}

.empty-state strong {
  display: block;
  margin-bottom: 6px;
  color: var(--on-surface);
  font-size: 18px;
}

.chart-tooltip {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 99999;
  max-width: min(280px, calc(100vw - 24px));
  padding: 10px 12px;
  border-radius: 12px;
  background: #191b24;
  color: #ffffff;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
  font-size: 12px;
  line-height: 1.5;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

.chart-tooltip.is-visible {
  opacity: 1;
  visibility: visible;
}

.tooltip-title {
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 700;
}

.tooltip-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.tooltip-row span:first-child {
  color: #cfd1df;
}

.radial-link {
  fill: none;
  stroke: rgba(116, 118, 136, 0.42);
  stroke-width: 1.1px;
  pointer-events: stroke;
}

.radial-link-hit {
  fill: none;
  stroke: transparent;
  stroke-width: 12px;
  pointer-events: stroke;
}

.radial-link.is-active {
  stroke: var(--primary);
  stroke-width: 2px;
}

.radial-node circle {
  stroke: var(--surface-container-lowest);
  stroke-width: 1.5px;
}

.radial-node text,
.axis-label,
.ring-label,
.treemap-label,
.treemap-value {
  font-family: "Lexend", system-ui, sans-serif;
  letter-spacing: 0;
}

.radial-node text,
.axis-label,
.ring-label {
  fill: var(--on-surface-variant);
  font-size: 10px;
  paint-order: stroke;
  stroke: rgba(255, 255, 255, 0.88);
  stroke-width: 3px;
}

.radial-node.is-active circle {
  stroke: var(--deep-obsidian);
  stroke-width: 2px;
}

.treemap-cell rect,
.sunburst-segment,
.stack-segment {
  transition:
    opacity 160ms ease,
    stroke-width 160ms ease,
    filter 160ms ease;
}

.treemap-cell:hover rect,
.sunburst-segment:hover,
.stack-segment:hover {
  filter: saturate(1.1) brightness(1.03);
}

.sunburst-segment {
  stroke: rgba(255, 255, 255, 0.68);
  stroke-width: 1px;
}

.sunburst-label {
  fill: #ffffff;
  font-family: "Lexend", system-ui, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0;
  paint-order: stroke;
  pointer-events: none;
  stroke: rgba(25, 27, 36, 0.35);
  stroke-linejoin: round;
  stroke-width: 2px;
}

.sunburst-label.is-hidden {
  display: none;
}

.sunburst-label.product-label {
  display: none !important;
}

.sunburst-center {
  cursor: pointer;
}

.sunburst-center-label {
  fill: var(--on-surface);
  font-family: "Lexend", system-ui, sans-serif;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

.treemap-label {
  fill: #ffffff;
  font-size: 12px;
  font-weight: 700;
  pointer-events: none;
}

.treemap-category-boundary {
  fill: none;
  stroke: rgba(25, 27, 36, 0.42);
  stroke-width: 1.5px;
  pointer-events: none;
}

.treemap-category-label {
  fill: rgba(25, 27, 36, 0.86);
  font-family: "Lexend", system-ui, sans-serif;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  paint-order: stroke;
  pointer-events: none;
  stroke: rgba(255, 255, 255, 0.92);
  stroke-width: 4px;
}

.treemap-value {
  fill: rgba(255, 255, 255, 0.88);
  font-size: 11px;
  font-weight: 500;
  pointer-events: none;
}

.ring-line {
  fill: none;
  stroke: rgba(116, 118, 136, 0.24);
  stroke-dasharray: 3 4;
}

.footer-note {
  margin-top: 28px;
  color: var(--on-surface-variant);
  font-size: 13px;
  text-align: center;
}

.dataset-note {
  margin-top: 24px;
  padding: 16px 18px;
  border: 1px solid rgba(196, 197, 217, 0.82);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.78);
  color: var(--on-surface-variant);
  font-size: 13px;
  line-height: 1.7;
  box-shadow: var(--shadow-subtle);
}

@media (max-width: 1180px) {
  .filter-grid {
    grid-template-columns: repeat(3, minmax(160px, 1fr));
  }

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

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

@media (max-width: 900px) {
  .app-shell {
    padding: 20px;
  }

  .dashboard-header,
  .chart-grid {
    grid-template-columns: 1fr;
  }

  .dataset-status {
    justify-content: flex-start;
  }

  .chart-card-wide {
    grid-column: auto;
  }

  .chart-card-tree {
    grid-column: auto;
  }
}

@media (max-width: 680px) {
  .app-shell {
    padding: 16px;
  }

  h1 {
    font-size: 2rem;
  }

  .section-heading,
  .chart-card-header {
    display: grid;
  }

  .button-primary {
    width: 100%;
  }

  .dashboard-intro {
    border-radius: var(--radius-lg);
  }

  .intro-header {
    display: grid;
    padding: 22px;
  }

  .intro-toggle {
    width: 100%;
  }

  .intro-body {
    padding: 0 22px 22px;
  }

  .intro-cards {
    grid-template-columns: 1fr;
  }

  .filter-grid,
  .filter-grid-compact,
  .kpi-grid {
    grid-template-columns: 1fr;
  }

  .chart-card,
  .filter-panel {
    padding: 16px;
    border-radius: var(--radius-lg);
  }

  .chart-host-tall,
  .chart-host-wide,
  .chart-host-tree,
  .chart-host-sunburst {
    min-height: 460px;
  }

  .tab-list {
    display: grid;
  }

  .tab-button {
    width: 100%;
  }
}