/* BUTTONS */
.btn {
    padding: 17px 30px;
    font-size: 16px;
    font-weight: 700;
    transition: 0.3s;
    border-radius: 30px;
    cursor: pointer;
    border: 1px solid transparent;
  }
  
  .btn-circle {
    height: 55px;
    width: 55px;
    font-size: 17px;
    padding: 17px;
    border-radius: 50%;
    display: flex;
    border: 1px solid transparent;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.3s;
  }
  
  .btn-red {
    background-color: #B00F0F;
    color: white;
  }
  .btn-red:hover {
    background-color: white;
    color: black;
  }
  
  .btn-white {
    background-color: white;
    color: black;
  }
  .btn-white:hover {
    background-color: #B00F0F;
    color: white;
  }
  
  .btn-social {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #181A1C;
    background-color: white;
  }
  .btn-social:hover {
    color: #B00F0F;
  }
  
  .btn-social-red {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: white;
    background-color: #B00F0F;
    transition: 0.3s;
  }
  .btn-social-red:hover {
    background-color: #E4E7FF;
    color: #B00F0F;
  }
  
  .btn-controls {
    width: 60px;
    height: 60px;
    background: transparent;
    box-shadow: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    outline: none;
  }
  .btn-controls:hover {
    background: white;
    filter: drop-shadow(2px 4px 8px rgba(0, 0, 0, 0.1));
  }
  
 
  .scroll-up-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: white;
    border: 2px solid red;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
  }
  .scroll-up-button.active {
    opacity: 1;
    visibility: visible;
  }
  .scroll-up-button i {
    color: red;
    font-size: 20px;
  }