:root {
  color-scheme: light dark;
  --background: #f6f5f1;
  --foreground: #252925;
  --track: #dedfd8;
  --accent: #d45525;
  --tick: #a2a69e;
  --tick-major: #41473f;
  --scale-label: #62685e;
  --unit-label: #757b70;
  --error: #9e3d1b;
  --toggle-border: #dcded5;
  --toggle-background: #eeeee8;
  --toggle-text: #6b7166;
  --selected-background: #2d332b;
  --selected-text: #fafbf7;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--foreground);
  background: var(--background);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #111411;
    --foreground: #eceee8;
    --track: #343a30;
    --accent: #e78958;
    --tick: #717969;
    --tick-major: #b5bcae;
    --scale-label: #abb2a4;
    --unit-label: #a9afa3;
    --error: #f0a27c;
    --toggle-border: #384030;
    --toggle-background: #1c2119;
    --toggle-text: #aeb7a4;
    --selected-background: #dce3d4;
    --selected-text: #172013;
  }
}

* { box-sizing: border-box; }
body { margin: 0; }
main {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}
.speedometer {
  position: relative;
  width: min(620px, 100%, calc(100svh - 32px));
  aspect-ratio: 1;
  container-type: inline-size;
}
.dial { width: 100%; height: 100%; overflow: visible; }
.track, .progress { fill: none; stroke-width: 5; stroke-linecap: round; }
.track { stroke: var(--track); }
.progress { stroke: var(--accent); }
.indicator { fill: var(--accent); stroke: var(--background); stroke-width: 3; }
.tick { stroke: var(--tick); stroke-width: 1.5; }
.tick-major { stroke: var(--tick-major); stroke-width: 2; }
.tick-label {
  fill: var(--scale-label);
  font-size: 19px;
  font-weight: 500;
  text-anchor: middle;
  dominant-baseline: central;
  font-variant-numeric: tabular-nums;
}
.reading {
  position: absolute;
  inset: 29% 15% auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
#speed {
  font-size: 29cqi;
  line-height: 0.95;
  font-weight: 550;
  letter-spacing: -0.06em;
  padding-right: 0.06em;
  font-variant-numeric: tabular-nums;
}
.unit { margin-top: 0; font-size: 4cqi; color: var(--unit-label); }
.status {
  position: absolute;
  inset: 65% 22% auto;
  margin: 0;
  color: var(--error);
  font-size: clamp(12px, 2.8cqi, 16px);
  line-height: 1.4;
  text-align: center;
  text-wrap: balance;
}
.unit-toggle {
  position: absolute;
  bottom: 9.5%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 3px;
  padding: 4px;
  border: 1px solid var(--toggle-border);
  border-radius: 999px;
  background: var(--toggle-background);
}
.unit-toggle button {
  min-width: clamp(66px, 14cqi, 86px);
  min-height: 44px;
  padding: 8px 16px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--toggle-text);
  font: inherit;
  font-size: clamp(14px, 2.8cqi, 17px);
  font-weight: 550;
  cursor: pointer;
  touch-action: manipulation;
}
.unit-toggle button[aria-pressed="true"] { background: var(--selected-background); color: var(--selected-text); }
.unit-toggle button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }