Sync — autosave debounce
Variant: Autosave debounce
An editor chip crossing the whole save lifecycle — edit, write, tick — and the piece is the 900ms in between, where a hairline ring drains around the dirty dot before anything is written. That wait is the debounce every autosave implements and almost none of them show; drawn, it converts "why has it not saved yet" into "it is waiting for me to stop". The ring and the spinner both run linear, because a timer is a clock and a write in flight is machine motion, and neither answers a person — while the two moments that do, the dot popping in on the edit and the tick landing, get the deceleration. Then the chip falls to half weight: autosave fires dozens of times an hour, and a state seen that often has earned near-silence. The loop opens and closes at rest, so there is no reset to hide.
The source
A complete HTML document. Paste it into an empty .html file and it plays — no stylesheet, script, font, or image to fetch.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Sync — autosave debounce</title>
<style>
:root {
/* Neutrals — fixed, never remixed. */
--ivory: #faf9f5;
--paper: #ffffff;
--oat: #e3dacc;
--slate: #141413;
/* Knobs — the remix API. A knob exists iff declared here and used below. */
--hue: 38.8;
--lift: 0;
--chroma: 1;
--speed: 1;
/* Accents — derived from the knobs with the family's offsets baked in,
so one hue roll moves them together. Defaults reproduce the original hex. */
--clay: oklch(calc(0.6724 + var(--lift)) calc(0.1308 * var(--chroma)) var(--hue));
--clay-d: oklch(calc(0.5797 + var(--lift)) calc(0.127 * var(--chroma)) var(--hue));
--olive: oklch(
calc(0.6118 + var(--lift)) calc(0.0713 * var(--chroma)) calc(var(--hue) + 88.3)
);
--rust: oklch(
calc(0.5408 + var(--lift)) calc(0.1357 * var(--chroma)) calc(var(--hue) - 10.3)
);
--_muted: color-mix(in srgb, var(--slate) 62%, transparent);
/* Clock — 5.6s: an edit at 6%, a 0.9s debounce, a 1s write, a tick, and
a long quiet tail. The loop opens and closes in the resting Saved
state, so there is no reset to hide anywhere in it. */
--cycle: 5.6s;
--t: calc(var(--cycle) / var(--speed));
--ease-out: cubic-bezier(0.23, 1, 0.32, 1);
--ease-accent: cubic-bezier(0.32, 0.72, 0, 1);
}
* {
box-sizing: border-box;
margin: 0;
padding: 0;
}
body {
min-height: 100vh;
display: grid;
place-items: center;
background: var(--ivory);
font-family:
system-ui,
-apple-system,
'Segoe UI',
Roboto,
sans-serif;
color: var(--slate);
}
/* A pill — its radius is half its own height, so it stays literal. */
.chip {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 7px 13px 7px 10px;
border-radius: 999px;
background: var(--paper);
border: 1px solid var(--oat);
animation: chip var(--t) ease infinite;
}
/* Half weight at rest: autosave fires dozens of times an hour, and a
state seen that often has earned near-silence between events. */
@keyframes chip {
0%,
6% {
opacity: 0.62;
}
8.5%,
61% {
opacity: 1;
}
66%,
100% {
opacity: 0.62;
}
}
.glyph {
width: 16px;
height: 16px;
flex: none;
overflow: visible;
}
.dot {
fill: var(--clay);
transform-origin: 8px 8px;
animation: dot var(--t) ease infinite;
}
@keyframes dot {
0%,
6% {
opacity: 0;
transform: scale(0.9);
animation-timing-function: var(--ease-out);
}
9.5%,
25.5% {
opacity: 1;
transform: scale(1);
animation-timing-function: ease;
}
27%,
100% {
opacity: 0;
transform: scale(0.9);
}
}
/* The debounce made visible: a hairline timer draining around the dirty
dot. It runs linear because it is a clock, and a clock does not ease. */
.ring {
fill: none;
stroke: color-mix(in srgb, var(--clay) 55%, transparent);
stroke-width: 1.6;
stroke-dasharray: 39;
transform: rotate(-90deg);
transform-origin: 8px 8px;
animation:
ring-drain var(--t) linear infinite,
ring-fade var(--t) ease infinite;
}
@keyframes ring-drain {
0%,
10% {
stroke-dashoffset: 0;
}
26%,
100% {
stroke-dashoffset: 39;
}
}
@keyframes ring-fade {
0%,
7% {
opacity: 0;
}
8.5%,
25.5% {
opacity: 1;
}
27%,
100% {
opacity: 0;
}
}
/* The write in flight. Also linear: machine motion answers to no one. */
.arc {
fill: none;
stroke: var(--clay);
stroke-width: 2;
stroke-linecap: round;
stroke-dasharray: 27 12;
transform-origin: 8px 8px;
animation:
arc-spin var(--t) linear infinite,
arc-fade var(--t) ease infinite;
}
@keyframes arc-spin {
0%,
26% {
transform: rotate(-90deg);
}
44%,
100% {
transform: rotate(630deg);
}
}
@keyframes arc-fade {
0%,
25.5% {
opacity: 0;
}
27%,
43% {
opacity: 1;
}
45%,
100% {
opacity: 0;
}
}
.tick {
fill: none;
stroke: var(--clay-d);
stroke-width: 2;
stroke-linecap: round;
stroke-linejoin: round;
stroke-dasharray: 11.5;
animation:
tick-draw var(--t) linear infinite,
tick-fade var(--t) ease infinite;
}
@keyframes tick-draw {
0%,
8% {
stroke-dashoffset: 0;
}
20%,
44.5% {
stroke-dashoffset: 11.5;
animation-timing-function: var(--ease-accent);
}
49.5%,
100% {
stroke-dashoffset: 0;
}
}
@keyframes tick-fade {
0%,
6% {
opacity: 1;
}
7.5%,
44% {
opacity: 0;
}
45.5%,
100% {
opacity: 1;
}
}
/* Three labels share one grid cell: the chip is as wide as the longest
and never reflows while they trade places. */
.lbl {
display: grid;
font-size: 12px;
font-weight: 600;
letter-spacing: 0.01em;
}
.lbl span {
grid-area: 1 / 1;
}
.edited {
color: color-mix(in srgb, var(--clay-d) 72%, var(--slate));
animation: edited var(--t) ease infinite;
}
@keyframes edited {
0%,
6% {
opacity: 0;
transform: translateY(4px);
animation-timing-function: var(--ease-out);
}
9%,
25.5% {
opacity: 1;
transform: translateY(0);
animation-timing-function: ease;
}
27.5%,
100% {
opacity: 0;
transform: translateY(-4px);
}
}
.saving {
color: var(--_muted);
animation: saving var(--t) ease infinite;
}
@keyframes saving {
0%,
25.5% {
opacity: 0;
transform: translateY(4px);
animation-timing-function: var(--ease-out);
}
28%,
43.5% {
opacity: 1;
transform: translateY(0);
animation-timing-function: ease;
}
45.5%,
100% {
opacity: 0;
transform: translateY(-4px);
}
}
.saved {
animation: saved var(--t) ease infinite;
}
@keyframes saved {
0%,
6% {
opacity: 1;
transform: translateY(0);
}
8%,
30% {
opacity: 0;
transform: translateY(-4px);
}
/* Repositioned below while hidden, so the next entrance rises. */
31%,
44% {
opacity: 0;
transform: translateY(4px);
animation-timing-function: var(--ease-out);
}
48%,
100% {
opacity: 1;
transform: translateY(0);
}
}
@media (prefers-reduced-motion: reduce) {
/* Gentler, not dead: the state changes crossfade, the timer ring keeps
draining (it is the datum), and the spinner becomes a slow blink
instead of a rotation. One shared 1.6x clock keeps them in step. */
.chip,
.dot,
.ring,
.arc,
.tick,
.edited,
.saving,
.saved {
animation-duration: calc(var(--t) * 1.6);
}
.dot {
animation-name: dot-rm;
transform: none;
}
@keyframes dot-rm {
0%,
6% {
opacity: 0;
}
9.5%,
25.5% {
opacity: 1;
}
27%,
100% {
opacity: 0;
}
}
.arc {
animation-name: arc-rm;
transform: rotate(-90deg);
}
@keyframes arc-rm {
0%,
25.5% {
opacity: 0;
}
28%,
31% {
opacity: 1;
}
35% {
opacity: 0.55;
}
39%,
43% {
opacity: 1;
}
45%,
100% {
opacity: 0;
}
}
.tick {
animation-name: tick-fade;
stroke-dashoffset: 0;
}
.edited {
animation-name: edited-rm;
transform: none;
}
@keyframes edited-rm {
0%,
6% {
opacity: 0;
}
9%,
25.5% {
opacity: 1;
}
27.5%,
100% {
opacity: 0;
}
}
.saving {
animation-name: saving-rm;
transform: none;
}
@keyframes saving-rm {
0%,
25.5% {
opacity: 0;
}
28%,
43.5% {
opacity: 1;
}
45.5%,
100% {
opacity: 0;
}
}
.saved {
animation-name: saved-rm;
transform: none;
}
@keyframes saved-rm {
0%,
6% {
opacity: 1;
}
8%,
44% {
opacity: 0;
}
48%,
100% {
opacity: 1;
}
}
}
</style>
</head>
<body>
<span
class="chip"
role="img"
aria-label="An autosave chip: an edit marks the document dirty, a timer ring drains through the debounce, a spinner writes, and a tick lands on Saved"
>
<svg class="glyph" viewBox="0 0 16 16" aria-hidden="true">
<circle class="ring" cx="8" cy="8" r="6.2" />
<circle class="arc" cx="8" cy="8" r="6.2" />
<circle class="dot" cx="8" cy="8" r="3.2" />
<path class="tick" d="M4.5 8.5 L7.2 11 L11.5 5.2" />
</svg>
<span class="lbl">
<span class="edited">Edited</span>
<span class="saving">Saving</span>
<span class="saved">Saved</span>
</span>
</span>
</body>
</html>
The variant family
Same idea, one axis moved. Compare them side by side before you commit.