/* Styl przycisku */
    .scroll-up {
      position: fixed;
      bottom: 10px;
      right: 10px;
      width: 50px;
      height: 50px;
      background: transparent;
      padding: 0;
      margin: 0;
      border: none;
      cursor: pointer;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.4s ease, transform 0.3s ease;
      z-index: 1000;
    }

    .scroll-up.show {
      opacity: 1;
      pointer-events: auto;
    }

    .scroll-up:hover,
    .scroll-up:focus {
      transform: scale(1.1);
      outline: none;
    }

    .scroll-up img {
      width: 100%;
      height: 100%;
      display: block;
    }