/*------------------------------------*\
    SCROLL PROGRESS BAR
    - Fixed indicator; JS typically updates width inline.
  \*------------------------------------*/
  .scroll-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, #007bff, #0056b3);
    box-shadow: 0 0 6px #007bff;
    border-radius: 0 2px 2px 0;
    z-index: 9999;
    transition: width .2s ease-out;
  }