Create 3D Flip Card Animations in HTML CSS

<div class="flip-card">
  <div class="flip-card-inner">
    <div class="flip-card-front">
      <img src="https://images.unsplash.com/photo-1557683316-973673baf926?auto=format&fit=crop&w=400&q=80" alt="Avatar">
      <h2>Hover Me</h2>
    </div>
    <div class="flip-card-back">
      <h1>John Doe</h1>
      <p>Architect & Engineer</p>
      <p>We love that guy</p>
    </div>
  </div>
</div>

body { margin: 0; padding: 0; display: flex; justify-content: center; align-items: center; min-height: 100vh; background-color: #f1f2f6; font-family: 'Inter', sans-serif; }

.flip-card {
  background-color: transparent;
  width: 300px;
  height: 400px;
  perspective: 1000px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-style: preserve-3d;
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
  border-radius: 15px;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: 15px;
  overflow: hidden;
}

.flip-card-front {
  background-color: #fff;
  color: black;
}

.flip-card-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.flip-card-front h2 {
  position: absolute;
  bottom: 20px;
  left: 0;
  width: 100%;
  color: white;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
}

.flip-card-back {
  background: linear-gradient(135deg, #6e8efb, #a777e3);
  color: white;
  transform: rotateY(180deg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.flip-card-back h1 { margin-bottom: 10px; }

// Pure CSS!