.hds-sandpile {
  --hds-blue: var(--theme, #1565c0);
  --hds-rust: #a64d21;
  --hds-muted: #46566b;
  --hds-border: #d8e3ef;
  --hds-gutter: 2.65rem;
  margin: 1.6rem 0;
  padding: clamp(.8rem, 3.4vw, 1.3rem);
  border: 1px solid var(--hds-border);
  border-radius: .5rem;
  background: #f6f9fd;
  color: #172438;
  font-size: .9rem;
  line-height: 1.45;
  font-weight: 400;
}

.hds-sandpile figcaption {
  margin-bottom: 1rem;
}

.hds-sandpile figcaption strong,
.hds-sandpile figcaption span {
  display: block;
}

.hds-sandpile figcaption strong {
  font-family: "Roboto Slab", Georgia, serif;
  font-size: 1.15rem;
  font-weight: 500;
}

.hds-sandpile figcaption span,
.hds-chart-heading span,
.hds-totals dt {
  color: var(--hds-muted);
  font-size: .82rem;
}

.hds-chart {
  padding: .8rem .55rem .7rem;
  border: 1px solid var(--hds-border);
  border-radius: .4rem;
  background: #fff;
}

.hds-chart-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .35rem .9rem;
  padding: 0 .2rem;
}

.hds-chart-heading strong {
  flex: 1;
}

.hds-key {
  display: inline-block;
  width: .65em;
  height: .65em;
  border-radius: 2px;
  background: var(--hds-blue);
}

.hds-key-over {
  background: var(--hds-rust);
}

.hds-plot,
.hds-lattice {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-left: var(--hds-gutter);
  position: relative;
}

.hds-plot {
  height: clamp(9rem, 30vw, 12rem);
  margin-top: 1rem;
  border-bottom: 1px solid #98abc1;
}

.hds-cap-line,
.hds-cap-label {
  position: absolute;
  z-index: 1;
  bottom: var(--hds-cap);
  pointer-events: none;
}

.hds-cap-line {
  width: 100%;
  border-bottom: 1px dashed #425b77;
}

.hds-cap-label {
  right: calc(100% + .3rem);
  color: var(--hds-muted);
  font-size: .75rem;
  transform: translateY(50%);
  white-space: nowrap;
}

.hds-column {
  position: relative;
}

.hds-bar,
.hds-density {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.hds-bar {
  width: 63%;
  max-width: 2.75rem;
  height: var(--kept-height, 0%);
  bottom: 0;
  background: var(--hds-blue);
  transition: height .23s ease-out;
}

.hds-bar-over {
  bottom: var(--hds-cap);
  height: var(--excess-height, 0%);
  background: var(--hds-rust);
}

.hds-density {
  z-index: 2;
  bottom: calc(var(--density-height, 0%) + 3px);
  padding: 0 .1rem;
  background: #fff;
  color: #172438;
  font-size: .72rem;
  font-variant-numeric: tabular-nums;
  transition: bottom .23s ease-out;
}

.hds-lattice {
  padding-top: .25rem;
  text-align: center;
  font-size: .8rem;
  font-variant-numeric: tabular-nums;
}

.hds-lattice > span:first-child {
  position: absolute;
  right: calc(100% + .3rem);
  top: .25rem;
  color: var(--hds-muted);
  white-space: nowrap;
}

.hds-odometer {
  margin-top: .2rem;
  border-top: 1px solid var(--hds-border);
  color: var(--hds-muted);
}

.hds-sent-positive {
  color: var(--hds-blue);
  font-weight: 500;
}

.hds-frame-note {
  display: flex;
  flex-wrap: wrap;
  gap: .2rem .55rem;
  margin-top: .75rem;
}

.hds-frame-note strong {
  color: var(--hds-blue);
  font-weight: 700;
}

.hds-frame-note span {
  color: var(--hds-muted);
}

.hds-totals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .6rem;
  margin: .7rem 0;
}

.hds-totals > div {
  border-top: 1px solid var(--hds-border);
  padding-top: .4rem;
}

.hds-totals dd {
  margin: .04rem 0 0;
  font-variant-numeric: tabular-nums;
  font-size: 1.05rem;
  font-weight: 500;
}

.hds-controls label {
  color: var(--hds-muted);
  font-size: .82rem;
}

.hds-controls input {
  display: block;
  width: 100%;
  min-height: 1.4rem;
  margin: .2rem 0 .5rem;
  accent-color: var(--hds-blue);
  cursor: pointer;
}

.hds-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem .45rem;
}

.hds-buttons button {
  min-height: 2.15rem;
  padding: .3rem .65rem;
  border: 1px solid #9ab3d0;
  border-radius: .25rem;
  background: #fff;
  color: #174474;
  font: inherit;
  font-size: .84rem;
  font-weight: 500;
  cursor: pointer;
}

.hds-buttons button:first-child {
  min-width: 4rem;
  border-color: var(--hds-blue);
  background: var(--hds-blue);
  color: #fff;
}

.hds-buttons button:hover:not(:disabled) {
  box-shadow: inset 0 0 0 1px currentColor;
}

.hds-buttons button:disabled {
  opacity: .5;
  cursor: default;
}

.hds-sandpile :is(button, input):focus-visible {
  outline: 2px solid #174474;
  outline-offset: 2px;
}

.hds-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  .hds-bar,
  .hds-density {
    transition: none;
  }
}