ホバー
CSS

Clip Path Reveal Hover

clip-pathの円形マスクがホバーで中心から広がり全体を露出する。

HTML
<div class="cprh-card">
  <div class="cprh-overlay"></div>
  <div class="cprh-content"><h3>Reveal</h3><p>Hover to unmask</p></div>
</div>
CSS
.cprh-card {
  position: relative;
  width: 260px;
  height: 160px;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
}
.cprh-overlay {
  position: absolute;
  inset: 0;
  background: #18181b;
  clip-path: circle(100% at 50% 50%);
  transition: clip-path 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.cprh-card:hover .cprh-overlay {
  clip-path: circle(0% at 50% 50%);
}
.cprh-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: #fff;
}
.cprh-content h3 { margin: 0 0 4px; font-size: 18px; }
.cprh-content p { margin: 0; font-size: 12px; opacity: 0.7; }