:root {
  color-scheme: light;
  --e786-background: #fbfaf6;
  --e786-foreground: #1d2a3a;
  --e786-muted: #667085;
  --e786-grid: #d9dde5;
  --e786-orange: #e66a32;
  --e786-teal: #168c8c;
  --e786-blue: #3f6db2;
  --e786-purple: #7b61a8;
  --e786-panel: #ffffff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-width: 0;
  background: var(--e786-background);
  color: var(--e786-foreground);
  font-family: "Courier Prime", monospace;
}

body > main {
  width: 100%;
}

#euler786-explainer {
  width: 100%;
  padding: 18px 20px 12px;
  background: var(--e786-background);
  color: var(--e786-foreground);
}

#euler786-explainer .euler786-stages {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}

#euler786-explainer .euler786-stages button {
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid var(--e786-grid);
  border-radius: 999px;
  background: transparent;
  color: var(--e786-foreground);
  font: inherit;
  cursor: pointer;
}

#euler786-explainer .euler786-stages button:hover {
  border-color: var(--e786-orange);
}

#euler786-explainer .euler786-stages button:focus-visible,
#euler786-explainer input:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--e786-orange) 45%, transparent);
  outline-offset: 2px;
}

#euler786-explainer .euler786-stages button[aria-pressed="true"] {
  border-color: var(--e786-orange);
  background: var(--e786-orange);
  color: #ffffff;
}

#euler786-explainer .euler786-caption {
  min-height: 48px;
  margin: 0;
  color: var(--e786-muted);
  font-size: 16px;
  line-height: 1.5;
}

#euler786-explainer .euler786-lattice-controls {
  display: grid;
  grid-template-columns: auto minmax(180px, 1fr) auto;
  align-items: center;
  gap: 10px 16px;
  margin: 4px 0 2px;
}

#euler786-explainer .euler786-lattice-controls[hidden] {
  display: none;
}

#euler786-explainer .euler786-lattice-controls label,
#euler786-explainer .euler786-lattice-controls p {
  margin: 0;
  font-size: 15px;
}

#euler786-explainer .euler786-lattice-controls input {
  width: 100%;
  accent-color: var(--e786-orange);
}

#euler786-explainer svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

#euler786-explainer svg text {
  fill: var(--e786-foreground);
  font-family: "Courier Prime", monospace;
  font-size: 14px;
  font-weight: 400;
}

#euler786-explainer svg .e786-math {
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
}

#euler786-explainer svg .e786-grid {
  stroke: var(--e786-grid);
  stroke-width: 1;
}

#euler786-explainer svg .e786-axis,
#euler786-explainer svg .e786-table {
  fill: none;
  stroke: var(--e786-foreground);
  stroke-width: 3;
  stroke-linejoin: round;
}

#euler786-explainer svg .e786-copy {
  fill: color-mix(in srgb, var(--e786-blue) 10%, transparent);
  stroke: var(--e786-grid);
  stroke-width: 2;
  stroke-linejoin: round;
}

#euler786-explainer svg .e786-route {
  fill: none;
  stroke: var(--e786-orange);
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#euler786-explainer svg .e786-helper {
  fill: none;
  stroke: var(--e786-teal);
  stroke-width: 2;
  stroke-dasharray: 8 7;
}

#euler786-explainer svg .e786-hit {
  fill: var(--e786-background);
  stroke: var(--e786-orange);
  stroke-width: 3;
}

#euler786-explainer svg .e786-a-point {
  fill: var(--e786-teal);
  stroke: var(--e786-background);
  stroke-width: 3;
}

#euler786-explainer svg .e786-region {
  fill: color-mix(in srgb, var(--e786-blue) 12%, transparent);
}

#euler786-explainer svg .e786-boundary {
  stroke: var(--e786-blue);
  stroke-width: 3;
}

#euler786-explainer svg .e786-valid {
  fill: var(--e786-orange);
  stroke: var(--e786-background);
  stroke-width: 1;
}

#euler786-explainer svg .e786-hidden {
  fill: var(--e786-background);
  stroke: var(--e786-blue);
  stroke-width: 2;
}

#euler786-explainer svg .e786-excluded {
  fill: none;
  stroke: var(--e786-muted);
  stroke-width: 1.6;
}

#euler786-explainer svg .e786-annotation {
  fill: var(--e786-muted);
  font-size: 13px;
}

@media (max-width: 640px) {
  #euler786-explainer {
    padding: 14px 10px 8px;
  }

  #euler786-explainer .euler786-stages button {
    flex: 1 1 120px;
  }

  #euler786-explainer .euler786-lattice-controls {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  #euler786-explainer svg text {
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  #euler786-explainer .euler786-stages button {
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
  }
}