html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
}
#waveform {
  width: 100%;
  height: 100%;
  background-color: #f0f0f0;
  position: relative;
  overflow: hidden;
  touch-action: none;
}
#waveformCanvas {
  touch-action: none;
  user-select: none;
  -webkit-user-drag: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  pointer-events: auto;
}
#playhead {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, 12.5%);
  width: 2px;
  height: 80%;
  background-color: red;
  z-index: 10;
  pointer-events: none;
}
#recordButton {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 0px solid #000;
  background-color: #671212;
  cursor: pointer;
  z-index: 10;
  touch-action: manipulation;
}
#recordButton:hover {
  background-color: #b91c1c;
}
#recordButton.waiting {
  background-color: #f5610b;
  animation: waitingPulse 0.8s infinite;
}
#recordButton.recording {
  animation: recordBlink 1s infinite;
  background-color: #dc2626;
}
@keyframes waitingPulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}
@keyframes recordBlink {
  0% {
    background-color: #dc2626;
  }
  50% {
    background-color: #671212;
  }
}

#drawButton {
  position: absolute;
  top: 20px;
  left: 80px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 0px solid #000;
  background-color: #0000008a;
  cursor: pointer;
  z-index: 10;
  touch-action: manipulation;
  display: flex;
  align-items: center;
  justify-content: center;
}

#drawButton:hover {
  background-color: #29292981;
}

#drawButton.active {
  background-color: #000000;
}

#drawButton.active:hover {
  background-color: #292929;
}

#drawButton svg {
  width: 20px;
  height: 20px;
  fill: rgb(0, 0, 0);
}

#drawButton.active svg {
  width: 20px;
  height: 20px;
  fill: rgb(255, 255, 255);
}

#positionControl {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.3);
  padding: 8px 15px;
  border-radius: 20px;
  z-index: 10;
}

#positionSlider {
  width: 200px;
}

#positionSliderValue {
  font-family: monospace;
  font-weight: bold;
  min-width: 45px;
  text-align: center;
}

#zoomControl {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.2);
  padding: 8px 15px;
  border-radius: 20px;
  z-index: 10;
}

#zoomSliderContainer {
  display: flex;
  align-items: center;
  gap: 5px;
}

.zoom-label {
  font-size: 20px;
  user-select: none;
}

#zoomSlider {
  width: 200px;
}

#zoomSliderValue {
  font-family: monospace;
  min-width: 45px;
  text-align: center;
}

#ruler {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 30px;
  z-index: 5;
  pointer-events: none;
}

.ruler-tick {
  position: absolute;
  bottom: 0;
  width: 1px;
  height: 10px;
  background-color: #666;
}

.ruler-label {
  position: absolute;
  bottom: 12px;
  font-family: monospace;
  font-size: 10px;
  color: #333;
  text-align: center;
  white-space: nowrap;
  transform: translateX(-50%);
}

@media (max-width: 768px) and (orientation: portrait) {
  #recordButton {
    width: 50px;
    height: 50px;
    top: 15px;
    left: 15px;
  }

  #drawButton {
    width: 50px;
    height: 50px;
    top: 70px;
    left: 15px;
  }

  #positionControl {
    padding: 6px 10px;
  }

  #positionSlider {
    width: 150px;
  }

  #zoomControl {
    padding: 6px 10px;
  }

  #zoomSlider {
    width: 150px;
  }
}

@media (max-width: 768px) and (orientation: landscape) {
  #recordButton {
    width: 50px;
    height: 50px;
    top: 15px;
    left: 15px;
  }

  #drawButton {
    width: 50px;
    height: 50px;
    top: 15px;
    left: 70px;
  }

  #positionControl {
    padding: 6px 10px;
  }

  #positionSlider {
    width: 150px;
  }

  #zoomControl {
    padding: 6px 10px;
  }

  #zoomSlider {
    width: 150px;
  }
}

@media (prefers-color-scheme: dark) {
  body {
    background-color: #858585;
  }

  #waveform {
    background-color: #858585;
  }
  #waveformCanvas {
    background-color: #858585;
  }

  #playhead {
    background-color: rgb(168, 0, 0);
  }
}