/* Reset */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  -webkit-font-smoothing: antialiased;
}

svg,
canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
}

ul,
ol {
  list-style: none;
}

a {
  color: currentColor;
}

/* Typography */
:root {
  --font-size-sm: clamp(0.8rem, 0.25vi + 0.74rem, 0.94rem);
  --font-size-base: clamp(1rem, 0.45vi + 0.89rem, 1.25rem);
  --font-size-md: clamp(1.25rem, 0.76vi + 1.06rem, 1.67rem);
  --font-size-lg: clamp(1.56rem, 1.2vi + 1.26rem, 2.22rem);
  --font-size-xl: clamp(1.95rem, 1.83vi + 1.5rem, 2.96rem);
  --font-size-xxl: clamp(2.44rem, 2.74vi + 1.76rem, 3.95rem);
  --font-size-xxxl: clamp(3.05rem, 4.02vi + 2.05rem, 5.26rem);

  --font-size-vis-xs: 10px;
  --font-size-vis-sm: 12px;
  --font-size-vis-base: 14px;

  --font-family-body: "Noto Sans", sans-serif;
  --font-family-header: "Noto Sans Display", sans-serif;

  --font-weight-normal: 400;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  --line-height-body: 1.5;
  --line-height-header: 1.1;

  --color-background: #fff;
  --color-text: #2f2f2f;
  --color-text-invert: #fff;

  --color-science: #ca7155;
  --color-reading: #d7a949;
  --color-mathematics: #7d8497;
  --color-computational-problem-solving: #6c8c89;

  --color-secondary: #868686;
}

body {
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-body);
  color: var(--color-text);
  background-color: var(--color-background);
}

h1 {
  font-family: var(--font-family-header);
  font-size: var(--font-size-xxl);
  font-weight: var(--font-weight-black);
  line-height: var(--line-height-header);
  text-wrap: balance;
}

.footer {
  font-size: var(--font-size-sm);
}

p {
  max-width: 70ch;
}

.figure {
  font-size: var(--font-size-vis-base);
}

/* Layout */
main {
  margin: 4rem auto;
  width: min(65rem, 100% - 2rem);
}

main > * + *,
.figure > * + * {
  margin-block-start: var(--spacer, 1lh);
}

h1 + * {
  --spacer: 2lh;
}

.figure {
  margin-block: 2lh;
}

.legends {
  display: flex;
  flex-wrap: wrap;
  gap: 1lh 4lh;
}

/* Legend */
.legend__title {
  font-weight: var(--font-weight-bold);
}

.legend__body {
  margin-block-start: 0.5em;
  display: grid;
  gap: 0.25em;
}

.swatch {
  --dot-size: 16px;
  --comparison-dot-size: 6px;
  display: flex;
  gap: 0.5em;
  align-items: center;
}

.swatch__swatch {
  flex-shrink: 0;
  width: var(--dot-size);
  height: var(--dot-size);
  border-radius: calc(infinity * 1px);
  position: relative;
  display: grid;
  place-items: center;
}

.subject-legend .swatch__swatch {
  background-color: var(--color-subject);
  color: var(--color-text-invert);
  font-size: var(--font-size-vis-xs);
  font-weight: var(--font-weight-black);
  line-height: 1;
}

.comparison-legend .swatch__swatch {
  border: 1px dashed var(--color-secondary);
}

.comparison-legend [data-type="above"] .swatch__swatch::after,
.comparison-legend [data-type="below"] .swatch__swatch::after {
  content: "";
  display: block;
  width: var(--comparison-dot-size);
  height: var(--comparison-dot-size);
  border-radius: calc(infinity * 1px);
  position: absolute;
  background-color: var(--color-secondary);
  transform: translateY(
    calc(-1 * var(--dot-size) / 2 - 1 * var(--comparison-dot-size) / 2 - 2px)
  );
}

.comparison-legend [data-type="below"] .swatch__swatch::after {
  transform: translateY(
    calc(var(--dot-size) / 2 + var(--comparison-dot-size) / 2 + 2px)
  );
}

/* Dumbbell plot */
.dumbbell-plot {
  position: relative;
}

.sticky-top {
  position: sticky;
  top: 0;
  background-color: var(--color-background);
  padding-block-start: 8px;
}

.axis__title {
  font-weight: var(--font-weight-bold);
}

.tick {
  color: var(--color-secondary);
  font-size: var(--font-size-vis-sm);
}

.row__line {
  stroke: var(--color-secondary);
}

.row__dot {
  font-size: var(--font-size-vis-xs);
  font-weight: var(--font-weight-black);
}