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Patch stamp save, sprung landing
Variant: Sprung overshoot
The patch drops with a spring-like curve that carries it slightly past its resting angle before it settles back. Use it where the save is a small win worth a bit of personality — a personal workspace, an editor's draft state — and never in a dense list where the extra motion would repeat. The overshoot is capped at a couple of degrees of rotation and a 3% scale so nothing crosses the slot boundary or clips.
confirmationstate-changesavespringovershoot
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" />
<meta name="animation-knobs" content="overshoot: ok; speed: 0.7-1.3" />
<title>Patch stamp save — sprung</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;
--round: 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
(#d97757 / #b85c3e / #788c5d / #b04a3f). */
--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));
/* Clock — every duration in the document runs off --t. */
--cycle: 3.6s;
--t: calc(var(--cycle) / var(--speed));
--ease-out: cubic-bezier(0.23, 1, 0.32, 1);
--ease-accent: cubic-bezier(0.34, 1.56, 0.64, 1); /* the sprung landing */
/* File-specific scratch. */
--_stitch: 268;
--_grain: color-mix(in srgb, var(--slate) 12%, transparent);
}
* { box-sizing: border-box; }
html, body { margin: 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);
}
.card {
width: min(400px, 92vw);
padding: clamp(16px, 5vw, 26px);
display: grid;
grid-template-columns: auto 1fr;
align-items: center;
gap: clamp(14px, 4vw, 20px);
background: var(--paper);
border: 1px solid var(--oat);
border-radius: calc(14px * var(--round));
}
.slot {
position: relative;
width: clamp(76px, 22vw, 92px);
height: clamp(76px, 22vw, 92px);
flex: none;
}
.slot::before {
content: '';
position: absolute;
inset: 6%;
border-radius: calc(10px * var(--round));
background:
repeating-linear-gradient(45deg, var(--_grain) 0 2px, transparent 2px 7px);
opacity: 0.5;
}
.stamp {
position: absolute;
inset: 0;
transform-origin: 50% 42%;
animation: drop var(--t) var(--ease-accent) infinite;
}
.stamp svg { display: block; width: 100%; height: 100%; overflow: visible; }
.patch-body { fill: var(--clay); }
.patch-edge { fill: var(--clay-d); }
.stitch {
fill: none;
stroke: var(--ivory);
stroke-width: 2.4;
stroke-linecap: round;
stroke-dasharray: 7 6;
stroke-dashoffset: var(--_stitch);
animation: sew var(--t) var(--ease-accent) infinite;
animation-delay: calc(0.16s / var(--speed));
}
.tick {
fill: none;
stroke: var(--ivory);
stroke-width: 7;
stroke-linecap: round;
stroke-linejoin: round;
stroke-dasharray: 44;
stroke-dashoffset: 44;
/* Stroke length can't overshoot without visibly detaching, so the tick
keeps the plain out-curve while the body springs. */
animation: tick var(--t) var(--ease-out) infinite;
animation-delay: calc(0.34s / var(--speed));
}
.shock {
position: absolute;
inset: 4%;
border-radius: calc(12px * var(--round));
border: 2px solid var(--rust);
opacity: 0;
animation: shock var(--t) var(--ease-accent) infinite;
}
.copy { min-width: 0; }
.label {
font-size: clamp(14px, 4vw, 16px);
font-weight: 650;
letter-spacing: 0.01em;
position: relative;
height: 1.25em;
overflow: hidden;
}
.label span {
position: absolute;
inset: 0;
display: block;
white-space: nowrap;
}
.label .before {
color: color-mix(in srgb, var(--slate) 55%, var(--ivory));
animation: out-line var(--t) var(--ease-accent) infinite;
}
.label .after {
color: var(--olive);
opacity: 0;
transform: translateY(60%);
animation: in-line var(--t) var(--ease-accent) infinite;
animation-delay: calc(0.3s / var(--speed));
}
.sub {
margin-top: 4px;
font-size: clamp(11px, 3.2vw, 12.5px);
line-height: 1.35;
color: color-mix(in srgb, var(--slate) 48%, var(--ivory));
}
/* Identical percentages and end states to the siblings; the spring curve
supplies the past-target excursion between 6% and 13%. */
@keyframes drop {
0% { transform: translate3d(0, -46%, 0) rotate(-9deg) scale(0.94); opacity: 0; }
6% { opacity: 1; }
13% { transform: translate3d(0, 0, 0) rotate(-2.5deg) scale(1); opacity: 1; }
88% { transform: translate3d(0, 0, 0) rotate(-2.5deg) scale(1); opacity: 1; }
97%, 100% { transform: translate3d(0, -10%, 0) rotate(-6deg) scale(0.96); opacity: 0; }
}
@keyframes sew {
0%, 8% { stroke-dashoffset: var(--_stitch); }
40% { stroke-dashoffset: 0; }
86% { stroke-dashoffset: 0; }
100% { stroke-dashoffset: 0; }
}
@keyframes tick {
0%, 10% { stroke-dashoffset: 44; }
34% { stroke-dashoffset: 0; }
100% { stroke-dashoffset: 0; }
}
@keyframes shock {
0%, 10% { opacity: 0; transform: scale(1); }
14% { opacity: 0.55; transform: scale(1); }
30% { opacity: 0; transform: scale(1.16); }
100% { opacity: 0; transform: scale(1.16); }
}
@keyframes out-line {
0% { opacity: 1; transform: translateY(0); }
10% { opacity: 1; transform: translateY(0); }
22% { opacity: 0; transform: translateY(-60%); }
92% { opacity: 0; transform: translateY(-60%); }
100% { opacity: 1; transform: translateY(0); }
}
@keyframes in-line {
0% { opacity: 0; transform: translateY(60%); }
14% { opacity: 1; transform: translateY(0); }
78% { opacity: 1; transform: translateY(0); }
86%, 100% { opacity: 0; transform: translateY(60%); }
}
@media (max-width: 380px) {
.card { padding: 14px; gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
.stamp {
animation: hold-fade calc(var(--cycle) * 2 / var(--speed)) ease-in-out infinite;
transform: none;
}
.shock { animation: none; opacity: 0; }
.stitch { animation: none; stroke-dashoffset: 0; }
.tick { animation: none; stroke-dashoffset: 0; }
.label .before {
animation: soft-out calc(var(--cycle) * 2 / var(--speed)) ease-in-out infinite;
transform: none;
}
.label .after {
animation: soft-in calc(var(--cycle) * 2 / var(--speed)) ease-in-out infinite;
animation-delay: calc(0.3s / var(--speed));
transform: none;
}
@keyframes hold-fade {
0%, 100% { opacity: 0.55; }
45%, 80% { opacity: 1; }
}
@keyframes soft-out {
0%, 100% { opacity: 1; }
20%, 88% { opacity: 0; }
}
@keyframes soft-in {
0%, 100% { opacity: 0; }
16%, 78% { opacity: 1; }
}
}
</style>
</head>
<body>
<div class="card">
<div class="slot">
<div class="stamp">
<svg viewBox="0 0 100 100" role="img" aria-label="Saved">
<path class="patch-edge" d="M31 5 L70 8 L95 32 L92 71 L68 95 L29 92 L6 67 L9 29 Z" />
<path class="patch-body" d="M32 9 L68 12 L91 34 L88 69 L66 91 L31 88 L10 65 L13 31 Z" />
<path class="stitch" d="M33 17 L67 20 L83 36 L80 67 L64 83 L32 80 L18 63 L21 33 Z" />
<path class="tick" d="M32 52 L45 65 L69 36" />
</svg>
</div>
<div class="shock"></div>
</div>
<div class="copy">
<div class="label">
<span class="before">Unsaved changes</span>
<span class="after">Patched & saved</span>
</div>
<div class="sub">Draft copy written to local store</div>
</div>
</div>
</body>
</html>
The variant family
Same idea, one axis moved. Compare them side by side before you commit.