Agent Pull Request Checks: CSS AI Animation

Agent Pull Request Checks

The pull request an agent just opened, with lint, typecheck and test turning from spinning amber to green checks one by one. When the last passes the summary flips and the Merge button lights up.

Also known as: ci checks animation, pull request status ui, github checks loading.

Add rate limiting to /login#482 by Claude into main

Checks runningAll checks passed

Color Base size 16px Dark background

HTML

<div class="aia-agent-pr-checks" role="status" aria-label="Pull request checks running">
  <div class="aia-agent-pr-checks-head">
    <span class="aia-agent-pr-checks-icon" aria-hidden="true"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><circle cx="6" cy="6" r="2.2"/><circle cx="6" cy="18" r="2.2"/><circle cx="18" cy="18" r="2.2"/><path d="M6 8.2v7.6M18 15.8V9.5a3 3 0 0 0-3-3h-4.5"/><path d="m12.5 4-2.5 2.5 2.5 2.5"/></svg></span>
    <span class="aia-agent-pr-checks-title"><b>Add rate limiting to /login</b><span>#482 by Claude into main</span></span>
  </div>
  <ul class="aia-agent-pr-checks-list" aria-hidden="true">
    <li><i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="m5.5 12.5 4 4 9-9.5"/></svg></i><span>lint</span><em>12s</em></li>
    <li><i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="m5.5 12.5 4 4 9-9.5"/></svg></i><span>typecheck</span><em>31s</em></li>
    <li><i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="m5.5 12.5 4 4 9-9.5"/></svg></i><span>test (ubuntu-latest)</span><em>1m 4s</em></li>
  </ul>
  <div class="aia-agent-pr-checks-foot">
    <span class="aia-agent-pr-checks-sum"><span>Checks running</span><span>All checks passed</span></span>
    <button type="button">Merge</button>
  </div>
</div>

CSS

@property --aia-agent-pr-checks-t {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}
.aia-agent-pr-checks {
  --c: var(--aia-color, #7c5cff);
  font-size: var(--aia-size, 16px);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.4;
  position: relative;
  box-sizing: border-box;
  padding: 0.9em 1em;
  border-radius: 0.9em;
  background: color-mix(in srgb, currentColor 3%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, currentColor 11%, transparent), 0 0.1em 0.2em color-mix(in srgb, currentColor 4%, transparent), 0 0.9em 2em -1.1em rgb(0 0 0 / 0.3);
  --d: 8s;
  --t: var(--aia-agent-pr-checks-t);
  --ok: color-mix(in srgb, #16a34a 78%, currentColor);
  --m: clamp(0, (var(--t) - 2.85) * 6, 1);
  width: 20em;
  animation: aia-agent-pr-checks-clock var(--d) cubic-bezier(0.65, 0, 0.35, 1) infinite;
}
.aia-agent-pr-checks-head {
  display: flex;
  gap: 0.6em;
  margin-bottom: 0.6em;
}
.aia-agent-pr-checks-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 1.8em;
  height: 1.8em;
  border-radius: 50%;
  background: color-mix(in srgb, #16a34a 14%, transparent);
  color: var(--ok);
}
.aia-agent-pr-checks-icon svg {
  width: 1.05em;
  height: 1.05em;
}
.aia-agent-pr-checks-title {
  display: grid;
  line-height: 1.3;
}
.aia-agent-pr-checks-title b { font-size: 0.92em; }
.aia-agent-pr-checks-title span {
  color: color-mix(in srgb, currentColor 55%, transparent);
  font-size: 0.75em;
}
.aia-agent-pr-checks-list,
.aia-agent-pr-checks-foot {
  animation: aia-agent-pr-checks-fade var(--d) linear infinite;
}
.aia-agent-pr-checks-list {
  margin: 0;
  padding: 0.35em 0.6em;
  border-radius: 0.55em;
  background: color-mix(in srgb, currentColor 4%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, currentColor 8%, transparent);
  list-style: none;
  font-size: 0.8em;
}
.aia-agent-pr-checks-list li {
  --i: 0;
  --p: clamp(0, (var(--t) - var(--i) - 0.55) * 3, 1);
  display: flex;
  align-items: center;
  gap: 0.55em;
  height: 1.85em;
}
.aia-agent-pr-checks-list li:nth-child(2) { --i: 1; }
.aia-agent-pr-checks-list li:nth-child(3) { --i: 2; }
.aia-agent-pr-checks-list i {
  position: relative;
  display: grid;
  place-items: center;
  width: 1.05em;
  height: 1.05em;
}
.aia-agent-pr-checks-list i::before {
  content: "";
  position: absolute;
  inset: 0.08em;
  border-radius: 50%;
  border: 0.14em dashed #d97706;
  opacity: calc(1 - var(--p));
  animation: aia-agent-pr-checks-spin 2.4s linear infinite;
}
.aia-agent-pr-checks-list i::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: color-mix(in srgb, #16a34a 85%, currentColor);
  transform: scale(var(--p));
}
.aia-agent-pr-checks-list svg {
  position: relative;
  z-index: 1;
  width: 0.7em;
  height: 0.7em;
  color: #fff;
  stroke-width: 3.6;
  opacity: var(--p);
}
.aia-agent-pr-checks-list span {
  margin-right: auto;
  font-family: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}
.aia-agent-pr-checks-list em {
  color: color-mix(in srgb, currentColor 50%, transparent);
  font: normal 0.92em ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  opacity: var(--p);
}
.aia-agent-pr-checks-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.7em;
}
.aia-agent-pr-checks-sum {
  display: grid;
  font-size: 0.8em;
  font-weight: 600;
}
.aia-agent-pr-checks-sum > * {
  grid-area: 1 / 1;
}
.aia-agent-pr-checks-sum > :first-child {
  color: color-mix(in srgb, #d97706 84%, currentColor);
  opacity: calc(1 - var(--m));
}
.aia-agent-pr-checks-sum > :last-child {
  color: var(--ok);
  opacity: var(--m);
  transform: translateY(calc((1 - var(--m)) * 0.5em));
}
.aia-agent-pr-checks-foot button {
  padding: 0.45em 1em;
  border: 0;
  border-radius: 0.5em;
  background: color-mix(in srgb, var(--c) calc(var(--m) * 100%), color-mix(in srgb, currentColor 10%, transparent));
  color: color-mix(in srgb, #fff calc(var(--m) * 100%), color-mix(in srgb, currentColor 45%, transparent));
  font: 600 0.8em system-ui, sans-serif;
  box-shadow: 0 0 0 calc(var(--m) * 0.3em) color-mix(in srgb, var(--c) 18%, transparent);
  cursor: pointer;
}
.aia-agent-pr-checks-foot button:focus-visible {
  outline: 2px solid var(--c);
  outline-offset: 2px;
}
@keyframes aia-agent-pr-checks-clock {
  0%, 10% { --aia-agent-pr-checks-t: 0; }
  18%, 30% { --aia-agent-pr-checks-t: 1; }
  38%, 52% { --aia-agent-pr-checks-t: 2; }
  62%, 96% { --aia-agent-pr-checks-t: 3; }
  97%, 100% { --aia-agent-pr-checks-t: 0; }
}
@keyframes aia-agent-pr-checks-fade {
  0%, 92% { opacity: 1; }
  96%, 97% { opacity: 0; }
  100% { opacity: 1; }
}
@keyframes aia-agent-pr-checks-spin {
  to { transform: rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
  .aia-agent-pr-checks,
  .aia-agent-pr-checks-list,
  .aia-agent-pr-checks-foot {
    animation: none;
    --aia-agent-pr-checks-t: 3;
  }
  .aia-agent-pr-checks-list i::before { animation: none; }
}

@media (prefers-reduced-motion: reduce) {
  .aia-agent-pr-checks, .aia-agent-pr-checks *, .aia-agent-pr-checks::before, .aia-agent-pr-checks::after, .aia-agent-pr-checks *::before, .aia-agent-pr-checks *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

Customizing this snippet

Color: set --aia-color on the element or a parent. Currently previewing #3b82f6.
Base size: set --aia-size. Every other dimension is in em, so the whole thing scales together. Currently previewing 16px.
Speed: change the duration on the transition or animation shorthand. Staggered delays are relative, so they keep their rhythm.
Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.

Agent Pull Request Checks

HTML

CSS

Customizing this snippet

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