.yt-box{
  max-width:480px;margin:20px auto;padding:20px;
  background:#080d12;border-radius:16px;
  box-shadow:0 0 20px #00eaff55;
  color:#eaffff;font-family:Arial;
}
.yt-title{text-align:center;font-size:20px;background:linear-gradient(90deg,#00eaff,#ff00f7);
-webkit-background-clip:text;color:transparent;margin-bottom:15px}
#yt-url{width:100%;padding:12px;border-radius:10px;background:#0b141d;border:1px solid #1d2a33;color:#dff}
#yt-go{margin-top:10px;width:100%;padding:12px;border-radius:10px;background:#00eaff;color:#001018;font-weight:bold;border:none;cursor:pointer}
#yt-progress{margin-top:15px;width:100%;height:8px;background:#111;border-radius:5px;overflow:hidden}
#yt-bar{width:0%;height:100%;background:#00eaff;transition:width .4s}