From 2c56cb021ff420c5b57c3e6b0464bc701861bfc8 Mon Sep 17 00:00:00 2001
From: Bohdan Triapitsyn <artmore@protonmail.com>
Date: Fri, 3 Apr 2026 19:38:37 +0300
Subject: [PATCH] refactor: switch shine text to CSS shimmer

---
 packages/ui/src/components/ui/text.tsx | 28 ++++----
 packages/ui/src/index.css              | 95 ++++++++++++++++++++++++++
 2 files changed, 107 insertions(+), 16 deletions(-)

diff --git a/packages/ui/src/components/ui/text.tsx b/packages/ui/src/components/ui/text.tsx
index 74bb5b23..537a25ad 100644
--- a/packages/ui/src/components/ui/text.tsx
+++ b/packages/ui/src/components/ui/text.tsx
@@ -21,23 +21,19 @@ const variants = [
   {
     variant: "shine",
     component: ({ children, className, ...props }) => (
-        <motion.span
-          {...props}
-          className={cn(
-            "bg-[linear-gradient(110deg,color-mix(in_srgb,var(--surface-muted-foreground)_45%,transparent),35%,var(--surface-foreground),50%,color-mix(in_srgb,var(--surface-muted-foreground)_45%,transparent),75%,color-mix(in_srgb,var(--surface-muted-foreground)_45%,transparent))]",
-            "bg-[length:200%_100%] bg-clip-text text-transparent",
-            className
-          )}
-        initial={{ backgroundPosition: "200% 0" }}
-        animate={{ backgroundPosition: "-200% 0" }}
-        transition={{
-          repeat: Number.POSITIVE_INFINITY,
-          duration: 2,
-          ease: "linear",
-        }}
+      <span
+        {...props}
+        data-component="oc-text-shimmer"
+        data-active="true"
+        className={className}
       >
-        {children}
-      </motion.span>
+        <span data-slot="text-shimmer-char">
+          <span data-slot="text-shimmer-char-base">{children}</span>
+          <span data-slot="text-shimmer-char-shimmer" data-run="true" aria-hidden="true">
+            {children}
+          </span>
+        </span>
+      </span>
     ),
   },
   {
diff --git a/packages/ui/src/index.css b/packages/ui/src/index.css
index 9f5afaaa..60530bca 100644
--- a/packages/ui/src/index.css
+++ b/packages/ui/src/index.css
@@ -287,6 +287,101 @@ textarea[data-chat-input="true"]:focus-visible {
   }
 }
 
+[data-component="oc-text-shimmer"] {
+  --oc-text-shimmer-step: 45ms;
+  --oc-text-shimmer-duration: 1200ms;
+  --oc-text-shimmer-angle: 90deg;
+  --oc-text-shimmer-spread: 5.2ch;
+  --oc-text-shimmer-size: 360%;
+  --oc-text-shimmer-base-color: color-mix(in srgb, var(--surface-muted-foreground) 75%, transparent);
+  --oc-text-shimmer-peak-color: var(--surface-foreground);
+  --oc-text-shimmer-sweep: linear-gradient(
+    var(--oc-text-shimmer-angle),
+    transparent calc(50% - var(--oc-text-shimmer-spread)),
+    var(--oc-text-shimmer-peak-color) 50%,
+    transparent calc(50% + var(--oc-text-shimmer-spread))
+  );
+  --oc-text-shimmer-base: linear-gradient(var(--oc-text-shimmer-base-color), var(--oc-text-shimmer-base-color));
+
+}
+
+[data-component="oc-text-shimmer"] [data-slot="text-shimmer-char"] {
+  display: inline-grid;
+  white-space: inherit;
+  font: inherit;
+  letter-spacing: inherit;
+  line-height: inherit;
+}
+
+[data-component="oc-text-shimmer"] [data-slot="text-shimmer-char-base"],
+[data-component="oc-text-shimmer"] [data-slot="text-shimmer-char-shimmer"] {
+  grid-area: 1 / 1;
+  white-space: inherit;
+  font: inherit;
+  letter-spacing: inherit;
+  line-height: inherit;
+}
+
+[data-component="oc-text-shimmer"] [data-slot="text-shimmer-char-base"] {
+  color: inherit;
+  opacity: 0;
+}
+
+[data-component="oc-text-shimmer"] [data-slot="text-shimmer-char-shimmer"] {
+  color: var(--surface-muted-foreground);
+  opacity: 1;
+}
+
+[data-component="oc-text-shimmer"] [data-slot="text-shimmer-char-shimmer"][data-run="true"] {
+  animation-name: oc-text-shimmer-sweep;
+  animation-duration: var(--oc-text-shimmer-duration);
+  animation-iteration-count: infinite;
+  animation-timing-function: linear;
+  animation-fill-mode: both;
+  animation-delay: calc(var(--oc-text-shimmer-step) * -1);
+  will-change: background-position;
+}
+
+@keyframes oc-text-shimmer-sweep {
+  0% {
+    background-position:
+      100% 0,
+      0 0;
+  }
+
+  100% {
+    background-position:
+      0% 0,
+      0 0;
+  }
+}
+
+@supports ((-webkit-background-clip: text) or (background-clip: text)) {
+  [data-component="oc-text-shimmer"] [data-slot="text-shimmer-char-shimmer"] {
+    color: transparent;
+    -webkit-text-fill-color: transparent;
+    background-image: var(--oc-text-shimmer-sweep), var(--oc-text-shimmer-base);
+    background-size:
+      var(--oc-text-shimmer-size) 100%,
+      100% 100%;
+    background-position:
+      100% 0,
+      0 0;
+    background-repeat: no-repeat;
+    -webkit-background-clip: text;
+    background-clip: text;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  [data-component="oc-text-shimmer"] [data-slot="text-shimmer-char-shimmer"] {
+    animation: none !important;
+    color: inherit;
+    -webkit-text-fill-color: currentColor;
+    background-image: none;
+  }
+}
+
 @keyframes gradient-shimmer {
   0% {
     stop-color: currentColor;