/* 3D Perspective Box */
  .card {
    width: 450px;
    height: 350px;
    perspective: 1000px;
    cursor: pointer;
  }

  /* Inner Container for 3D State */
  .card-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    border-radius: 12px;
  }

  /* JavaScript triggers this class rotation */
  .card.is-flipped .card-inner {
    transform: rotateY(180deg);
  }

  /* Shared Properties for Front & Back */
  .card-front, .card-back {
    width: 100%;
    height: 100%;
    position: absolute;
    backface-visibility: hidden;
    border-radius: 12px;
    overflow: hidden;
  }

  /* Front View (Image) */
  .card-front {
    background-color: #bbb;
  }

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

  /* Back View (Text) */
  .card-back {
    background-color: rgba(15,155,224, 0.78);
    color: white;
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 24px;
    box-sizing: border-box;
    text-align: center;
  }

  .card-back h2 {
    margin-top: 0;
    color: #ffffff;
    font-size: 24px;
  }

  .card-back p {
    font-size: 16px;
    line-height: 1.5;
    color: #ecf0f1;
  }