Price Gradient

<script>
  
  let slider;
  let timer;
  let values = [ 2333, 7878 ];

  const currency = new Intl.NumberFormat( "en", { style: 'currency', currency: 'USD', maximumFractionDigits: 0 });
  const formatter = (value) => currency.format(value);

  const stop = () => {
    slider.classList.remove( "up", "down" );
  }

  const slide = (e) => {
    const delta = -(e.detail.previousValue - e.detail.value);
    if ( delta > 0 ) {
      slider.classList.add( "up" );
      slider.classList.remove( "down" );
    } else {
      slider.classList.add( "down" );
      slider.classList.remove( "up" );
    }
    clearTimeout( timer );
    timer = setTimeout( stop, 66 );
  }

</script>

<RangeSlider 
  id="PriceGradient" 
  bind:slider
  bind:values
  range
  float
  pips
  first={false}
  last={false}
  min={0}
  max={10000}
  step={1}
  pipstep={200}
  {formatter}
  on:change={slide}
  on:stop={stop} 
/>

#PriceGradient {
  
  /** colors for the handles and range */
  --color1: hsl(219, 73%, 65%);
  --color2: hsl(283, 100%, 69%);
  --colorMix: hsl(256, 100%, 59%); 
  --range-pip: #ccc;
  --range-pip-in-range: var(--colorMix);
  
  /** linear springs from for easing nicely */
  --spring-duration: 1.5s;
  --spring-easing: linear(
  0, 0.576 4%, 0.79, 0.964, 1.102, 1.205, 1.275 13.6%, 1.298, 1.313, 1.32, 1.32,
  1.313 19.3%, 1.299 20.7%, 1.256 23.4%, 1.111 30.5%, 1.047 34.2%, 1.018, 0.996,
  0.979, 0.968 42.9%, 0.961 46.1%, 0.962 49.7%, 0.994 63.9%, 1.004 72%,
  1.005 79.2%, 1
  );
  
  --color: var(--color1);
  --shadow-color: 0deg 0% 0%;
  --shadow-elevation-medium:
  0px 0.4px 0.4px hsl(var(--shadow-color) / 0.1),
  0px 0.8px 0.8px -0.8px hsl(var(--shadow-color) / 0.09),
  0px 1.6px 1.7px -1.5px hsl(var(--shadow-color) / 0.08),
  0px 3.5px 3.6px -2.3px hsl(var(--shadow-color) / 0.08),
  0px 6.9px 7.2px -3px hsl(var(--shadow-color) / 0.07);
  
  height: 14px;
  
}

#PriceGradient .rangeBar {
  height: 100%;
  background: linear-gradient(90deg, var(--color1), var(--color2));
}

#PriceGradient .rangeHandle[data-handle="1"] {
  --color: var(--color2);
}

#PriceGradient .rangeHandle {
  width: 34px;
  height: 34px;
  top: calc( 50% - 1px );
  border-radius: 50%;
  background: white;
  border: 2px solid var(--color);
  box-shadow: var(--shadow-elevation-medium);
  perspective: 500px;
}

#PriceGradient .rangeNub {
  display: none;
}

#PriceGradient .rangeFloat {
  border-radius: .5em;
  padding: .3em .6em;
  background: white;
  color: black;
  font-weight: bold;
  border: 2px solid var(--color);
  top: -1em;
  transform-origin: bottom center;
  transform: translate(-50%, -100%) rotateX(100deg) scaleY(0.75);
  transition: all var(--spring-easing) var(--spring-duration);
}

#PriceGradient .rangeFloat:after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 9px;
  height: 9px;
  background: white;
  transform: translate(-50%, 50%) rotate(45deg);
  border-right: 2px solid var(--color);
  border-bottom: 2px solid var(--color);
}

#PriceGradient.focus .rangeHandle .rangeFloat, 
#PriceGradient.hoverable .rangeHandle:hover .rangeFloat, 
#PriceGradient.hoverable:hover .rangeFloat {
  top: -1em;
  transform: translate(-50%, -100%) rotateX(0deg);
  opacity: 1;
}

/** move the slider to the left or right while dragging */
#PriceGradient.up .rangeHandle.active .rangeFloat {
  transform: translate(-60%, -100%) rotateZ(-15deg);
}
#PriceGradient.down .rangeHandle.active .rangeFloat {
  transform: translate(-40%, -100%) rotateZ(15deg);
}

/** style the pips when active and in range */
#PriceGradient .pip {
  height: 2px;
  width: 2px;
  border-radius: 2px;
}
#PriceGradient.focus .pip.in-range {
  background: white;
  box-shadow: 
  0 0 2px 1px var(--range-pip-in-range), 
  0 0 5px 2px var(--range-pip-in-range), 
  0 0 2px 0px var(--range-pip-in-range);
}