@keyframes wave{0%{background-position:0 0}to{background-position:200% 0}}@keyframes darkwave{0%{opacity:0;transform:translate(-100%)}50%{opacity:.5}to{opacity:0;transform:translate(100%)}}.progress-bar-playing{background-image:linear-gradient(90deg,#490001 0%,#690304 50%,#490001 100%);background-size:200% 100%;animation:2s linear infinite wave;position:relative;overflow:hidden}.progress-bar-playing:after{content:"";background:linear-gradient(90deg,#0000 0%,#0000004d 50%,#0000 100%);width:70%;animation:2s ease-in-out infinite darkwave;position:absolute;inset:0}