perf(loading spinner): optimize loading spinner and inline code + css animation

web/src/components/LoadingSpinner.tsx

@@ -1,3 +1,4 @@
+import { LoadingSpinnerIcon } from 'icons/loadingSpinnerIcon';
 import { ReactElement } from 'react';
 import { useTranslation } from 'react-i18next';
 
@@ -13,8 +14,9 @@ export default function LoadingSpinner({
   const { t } = useTranslation();
   return (
     <div className="flex h-full flex-col items-center justify-center">
-      <div className="h-40 w-40 bg-[url('/images/loading-icon.svg')] bg-[length:100px] bg-center bg-no-repeat dark:bg-gray-900 dark:bg-[url('/images/loading-icon-darkmode.svg')]" />
-
+      <div className={`flex max-h-[100px] max-w-[100px] items-center justify-center`}>
+        <LoadingSpinnerIcon />
+      </div>
       {showReloadButton && (
         <>
           <p>{t('misc.slow-loading-text')}</p>

web/src/icons/loadingSpinnerIcon.tsx

@@ -0,0 +1,46 @@
+import { memo } from 'react';
+
+function AnimatedCircle({ cx, cy, delay }: { cx: string; cy: string; delay: number }) {
+  return (
+    <circle
+      cx={cx}
+      cy={cy}
+      r="19"
+      fill="currentColor"
+      style={{
+        animation: `loading-icon-spinner-animation 0.8s ${delay}s infinite linear`,
+      }}
+    />
+  );
+}
+
+export const LoadingSpinnerIcon = memo(function LoadingSpinnerIcon({
+  size = 100,
+}: {
+  size?: number;
+}) {
+  return (
+    <div className="text-black dark:text-white">
+      <svg
+        width={size}
+        height={size}
+        viewBox="0 0 512 512"
+        fill="none"
+        xmlns="http://www.w3.org/2000/svg"
+      >
+        <AnimatedCircle cx="420" cy="92" delay={0} />
+        <AnimatedCircle cx="420" cy="256" delay={0.1} />
+        <AnimatedCircle cx="420" cy="420" delay={0.2} />
+        <AnimatedCircle cx="256" cy="420" delay={0.3} />
+        <AnimatedCircle cx="92" cy="420" delay={0.4} />
+        <AnimatedCircle cx="92" cy="256" delay={0.5} />
+        <AnimatedCircle cx="92" cy="92" delay={0.6} />
+        <AnimatedCircle cx="256" cy="92" delay={0.7} />
+        <path
+          d="M344.736 227.405H267.066V159.846C267.066 152.384 257.933 149.152 253.53 155.059L161.28 272C157.44 277.12 160.979 284.614 167.258 284.614H244.934V352.154C244.934 359.616 254.067 362.848 258.47 356.941L350.72 240C354.56 234.88 351.014 227.405 344.736 227.405Z"
+          fill="currentColor"
+        />
+      </svg>
+    </div>
+  );
+});

web/src/index.css

@@ -151,3 +151,13 @@ noscript div {
 noscript img {
   max-width: 300px;
 }
+
+@keyframes loading-icon-spinner-animation {
+  0%,
+  100% {
+    opacity: 1;
+  }
+  50% {
+    opacity: 0.3;
+  }
+}