:root {
  color-scheme: dark;
  --phosphor: #8affaa;
  --phosphor-soft: rgba(138, 255, 170, 0.68);
  --phosphor-faint: rgba(85, 220, 124, 0.22);
  --screen: #000803;
  --shell: #050706;
}

* {
  box-sizing: border-box;
}

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

body {
  display: grid;
  place-items: center;
  min-height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 48%, rgba(42, 128, 62, 0.22), transparent 34%),
    linear-gradient(135deg, #020303 0%, #10130f 52%, #020403 100%);
  font-family: "SFMono-Regular", "Cascadia Code", "JetBrains Mono", "Fira Code", Consolas, monospace;
}

.background-math {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  color: rgba(190, 255, 205, 0.22);
  font-family: "Comic Sans MS", "Bradley Hand", "Segoe Print", "Marker Felt", cursive;
  text-shadow: 0 0 10px rgba(138, 255, 170, 0.12);
}

.background-math::before,
.background-math::after {
  content: none;
}

.smith-chart {
  position: absolute;
  color: rgba(138, 255, 170, 0.18);
  filter: drop-shadow(0 0 16px rgba(138, 255, 170, 0.12));
}

.smith-chart-left {
  width: 680px;
  height: 680px;
  left: -230px;
  top: 48px;
}

.smith-chart-right {
  width: 820px;
  height: 820px;
  right: -300px;
  bottom: -250px;
  opacity: 0.86;
}

.smith-major {
  stroke: rgba(138, 255, 170, 0.2);
  stroke-width: 0.006;
  fill: none;
}

.smith-minor {
  stroke: rgba(138, 255, 170, 0.1);
  stroke-width: 0.0035;
  fill: none;
}

.smith-axis {
  stroke: rgba(190, 255, 205, 0.18);
  stroke-width: 0.005;
  fill: none;
}

.formula {
  position: absolute;
  line-height: 1;
  white-space: nowrap;
  transform-origin: left center;
  user-select: none;
}