opencode/packages/ui/src/components/tool-status-title.css

[data-component="tool-status-title"] {
  display: inline-flex;
  align-items: baseline;
  white-space: nowrap;
  text-align: start;

  [data-slot="tool-status-suffix"] {
    display: inline-flex;
    align-items: baseline;
    white-space: nowrap;
  }

  [data-slot="tool-status-prefix"] {
    white-space: nowrap;
    flex-shrink: 0;
  }

  [data-slot="tool-status-swap"],
  [data-slot="tool-status-tail"] {
    display: inline-grid;
    overflow: hidden;
    justify-items: start;
    transition: width var(--tool-motion-spring-ms, 480ms) var(--tool-motion-ease, cubic-bezier(0.22, 1, 0.36, 1));
  }

  [data-slot="tool-status-active"],
  [data-slot="tool-status-done"] {
    grid-area: 1 / 1;
    white-space: nowrap;
    justify-self: start;
    text-align: start;
    transition-property: opacity, filter, transform;
    transition-duration:
      var(--tool-motion-fade-ms, 240ms), calc(var(--tool-motion-fade-ms, 240ms) * 0.8),
      calc(var(--tool-motion-fade-ms, 240ms) * 0.8);
    transition-timing-function: ease-out, ease-out, ease-out;
  }

  &[data-ready="false"] {
    [data-slot="tool-status-swap"],
    [data-slot="tool-status-tail"] {
      transition-duration: 0ms;
    }

    [data-slot="tool-status-active"],
    [data-slot="tool-status-done"] {
      transition-duration: 0ms;
    }
  }

  [data-slot="tool-status-active"] {
    opacity: 0;
    filter: blur(calc(var(--tool-motion-blur, 2px) * 0.45));
    transform: translateY(0.03em);
  }

  [data-slot="tool-status-done"] {
    color: var(--text-strong);
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
  }

  &[data-active="true"] {
    [data-slot="tool-status-active"] {
      opacity: 1;
      filter: blur(0);
      transform: translateY(0);
    }

    [data-slot="tool-status-done"] {
      opacity: 0;
      filter: blur(calc(var(--tool-motion-blur, 2px) * 0.45));
      transform: translateY(0.03em);
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  [data-component="tool-status-title"] [data-slot="tool-status-swap"],
  [data-component="tool-status-title"] [data-slot="tool-status-tail"] {
    transition-duration: 0ms;
  }

  [data-component="tool-status-title"] [data-slot="tool-status-active"],
  [data-component="tool-status-title"] [data-slot="tool-status-done"] {
    transition-duration: 0ms;
  }
}