opencode/packages/ui/src/components/tool-count-summary.css

[data-component="tool-count-summary"] {
  display: inline-flex;
  align-items: baseline;
  white-space: nowrap;

  [data-slot="tool-count-summary-empty"] {
    display: inline-grid;
    grid-template-columns: 1fr;
    align-items: baseline;
    opacity: 1;
    filter: blur(0);
    transform: translateY(0) scale(1);
    overflow: hidden;
    transform-origin: left center;
    transition-property: grid-template-columns, opacity, filter, transform;
    transition-duration:
      var(--tool-motion-spring-ms, 480ms), var(--tool-motion-fade-ms, 240ms), var(--tool-motion-fade-ms, 280ms),
      var(--tool-motion-spring-ms, 480ms);
    transition-timing-function:
      var(--tool-motion-ease, cubic-bezier(0.22, 1, 0.36, 1)), ease-out, ease-out,
      var(--tool-motion-ease, cubic-bezier(0.22, 1, 0.36, 1));
  }

  [data-slot="tool-count-summary-empty"][data-active="false"] {
    grid-template-columns: 0fr;
    opacity: 0;
    filter: blur(calc(var(--tool-motion-blur, 2px) * 0.72));
    transform: translateY(0.05em) scale(0.985);
  }

  [data-slot="tool-count-summary-item"] {
    display: inline-grid;
    grid-template-columns: 0fr;
    align-items: baseline;
    opacity: 0;
    filter: blur(var(--tool-motion-blur, 2px));
    transform: translateY(0.06em) scale(0.985);
    overflow: hidden;
    transform-origin: left center;
    transition-property: grid-template-columns, opacity, filter, transform;
    transition-duration:
      var(--tool-motion-spring-ms, 480ms), var(--tool-motion-fade-ms, 280ms), var(--tool-motion-fade-ms, 320ms),
      var(--tool-motion-spring-ms, 480ms);
    transition-timing-function:
      var(--tool-motion-ease, cubic-bezier(0.22, 1, 0.36, 1)), ease-out, ease-out,
      var(--tool-motion-ease, cubic-bezier(0.22, 1, 0.36, 1));
  }

  [data-slot="tool-count-summary-item"][data-active="true"] {
    grid-template-columns: 1fr;
    opacity: 1;
    filter: blur(0);
    transform: translateY(0) scale(1);
  }

  [data-slot="tool-count-summary-empty-inner"] {
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
  }

  [data-slot="tool-count-summary-item-inner"] {
    display: inline-flex;
    align-items: baseline;
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
  }

  [data-slot="tool-count-summary-prefix"] {
    display: inline-flex;
    align-items: baseline;
    justify-content: flex-start;
    max-width: 0;
    margin-right: 0;
    opacity: 0;
    filter: blur(calc(var(--tool-motion-blur, 2px) * 0.55));
    overflow: hidden;
    transform: translateX(-0.08em);
    transition-property: opacity, filter, transform;
    transition-duration:
      calc(var(--tool-motion-fade-ms, 200ms) * 0.75), calc(var(--tool-motion-fade-ms, 220ms) * 0.75),
      calc(var(--tool-motion-fade-ms, 220ms) * 0.6);
    transition-timing-function: ease-out, ease-out, ease-out;
  }

  [data-slot="tool-count-summary-prefix"][data-active="true"] {
    max-width: 1ch;
    margin-right: 0.45ch;
    opacity: 1;
    filter: blur(0);
    transform: translateX(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  [data-component="tool-count-summary"] [data-slot="tool-count-summary-empty"],
  [data-component="tool-count-summary"] [data-slot="tool-count-summary-item"],
  [data-component="tool-count-summary"] [data-slot="tool-count-summary-prefix"] {
    transition-duration: 0ms;
  }
}