/* СТИЛИ КНОПКИ "ИЗБРАННОЕ" С АНИМАЦИЕЙ  */
 .btn-favorite {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid #ddd;
    background-color: #ffffff;
    color: #333333;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: background 0.2s ease, border-color 0.2s ease;
  }

  .btn-favorite:hover {
    background-color: #f3f3f3;
    border-color: #bbb;
  }

  .btn-favorite:focus {
    outline: none;
    box-shadow: none;
  }

  .btn-favorite svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
  }

  .spinner-border {
    margin-left: 6px;
  }

  .pulse {
    animation: pulse-heart 0.4s ease-in-out;
  }

  @keyframes pulse-heart {
    0% {
      transform: scale(1);
    }
    30% {
      transform: scale(1.4);
    }
    60% {
      transform: scale(0.9);
    }
    100% {
      transform: scale(1);
    }
  }