<h3 class="hover-3">Hover Me</h3>

.hover-3 {
  --c: no-repeat linear-gradient(#1095c1 0 0);
  background: 
    var(--c) calc(-101% + var(--i,0)*101%) 100% / 50.1% calc(100%*var(--i,0) + .08em),
    var(--c) calc( 201% - var(--i,0)*101%) 0    / 50.1% calc(100%*var(--i,0) + .08em);
  transition: .3s calc(var(--i,0)*.3s), background-position .3s calc(.3s - var(--i,0)*.3s);
}
.hover-3:hover {
  --i: 1;
}

body {
  height: 100vh;
  margin: 0;
  display: grid;
  gap: 20px;
  place-content: center;
}
h3 {
  font-family: system-ui, sans-serif;
  font-size: 3rem;
  margin:0;
  cursor: pointer;
  padding: 0 .07em;
}