#controls {
  margin-top: 0.5rem;
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: 2.5rem;
}

#toggle-play-button > svg {
  fill: var(--primary-text-color)
}

#controls > * {
  height: 2.5rem;
  width: 2.5rem;
  fill: var(--primary-text-color);
  cursor: pointer;
}

#controls > *.disabled {
  opacity: 0.4;
  cursor: default;
}

#controls svg {
  filter: drop-shadow(.5px .5px 1px rgba(0, 0, 0, 0.5));
}

#loading-icon {
  animation: loading infinite 1s linear;
}

@keyframes loading {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Volume Controls */
#volume-controls {
  display: flex;
  width: 100%;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

#volume-controls > svg {
  height: 2rem;
  width: 2rem;
  stroke: var(--primary-text-color);
  fill: var(--primary-text-color);
  filter: drop-shadow(.5px .5px 1px rgba(0, 0, 0, 0.5));
}

/* Volume Slider */
#volume-slider {
  -webkit-appearance: none;
  background: transparent;
  flex-grow: 1;
}
#volume-slider:focus {
  outline: none;
}
#volume-slider::-webkit-slider-runnable-track {
  width: 100%;
  height: 4px;
  cursor: pointer;
  box-shadow: 0px 0px 0px #000000;
  background: var(--primary-text-color);
  border-radius: 50px;
  border: 0px solid #000000;
}
#volume-slider::-webkit-slider-thumb {
  box-shadow: 0px 0px 1px #000000;
  border: 0px solid #000000;
  height: 12px;
  width: 12px;
  background: var(--secondary-text-color);
  border-radius: 1rem;
  cursor: pointer;
  -webkit-appearance: none;
  margin-top: -4px;
}
#volume-slider:focus::-webkit-slider-runnable-track {
  background: var(--primary-text-color);
}
#volume-slider::-moz-range-track {
  width: 100%;
  height: 4px;
  cursor: pointer;
  box-shadow: 0px 0px 0px #000000;
  background: var(--primary-text-color);
  border-radius: 50px;
  border: 0px solid #000000;
}
#volume-slider::-moz-range-thumb {
  background: var(--secondary-text-color);
  box-shadow: 0px 0px 1px #000000;
  border: 0px solid #000000;
  height: 12px;
  width: 12px;
  border-radius: 50px;
  cursor: pointer;
}
#volume-slider::-ms-track {
  width: 100%;
  height: 4px;
  cursor: pointer;
  background: transparent;
  border-color: transparent;
  color: transparent;
}
#volume-slider::-ms-fill-lower {
  background: var(--primary-text-color);
  border: 0px solid #000000;
  border-radius: 100px;
  box-shadow: 0px 0px 0px #000000;
}
#volume-slider::-ms-fill-upper {
  background: var(--primary-text-color);
  border: 0px solid #000000;
  border-radius: 100px;
  box-shadow: 0px 0px 0px #000000;
}
#volume-slider::-ms-thumb {
  box-shadow: 0px 0px 1px #000000;
  border: 0px solid #000000;
  height: 12px;
  width: 12px;
  border-radius: 50px;
  cursor: pointer;
}
#volume-slider:focus::-ms-fill-lower {
  background: var(--primary-text-color);
}
#volume-slider:focus::-ms-fill-upper {
  background: var(--primary-text-color);
}