Neumorphic Interactive Liquid Button

HTML

CSS

:root {
  --bg: #e0e5ec;
  --shadow-light: #ffffff;
  --shadow-dark: #a3b1c6;
  --accent: #00CFA9;
}
body {
  background-color: var(--bg);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
}
.container {
  position: relative;
}
.liquid-btn {
  padding: 20px 40px;
  font-size: 18px;
  font-weight: 600;
  color: #54595F;
  background: var(--bg);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  outline: none;
  transition: transform 0.2s ease-out;
  box-shadow: 9px 9px 16px var(--shadow-dark),
    -9px -9px 16px var(--shadow-light);
  position: relative;
  overflow: hidden;
  z-index: 1;
}
.liquid-btn:active {
  box-shadow: inset 5px 5px 10px var(--shadow-dark),
    inset -5px -5px 10px var(--shadow-light);
  transform: scale(0.98);
}
.ripple {
  position: absolute;
  background: var(--accent);
  transform: translate(-50%, -50%);
  pointer-events: none;
  border-radius: 50%;
  animation: blow 0.8s linear;
  opacity: 0.5;
  z-index: -1;
}
@keyframes blow {
  from { width: 0; height: 0; opacity: 0.5; }
  to { width: 400px; height: 400px; opacity: 0; }
}