<main class="container">
  <div>
    <h1 class="demo-text">Hello</h1>
  </div>
  <div class="controls">
    <!-- Weight Controls -->
    <div class="slider-container">
      <input type="range" min="100" max="900" value="500" class="slider" id="text-weight" name="text-weight" data-index="0">
      <div class="slider-controls">
        <label for="text-weight" class="slider-label">
          Weight: <span class="output" data-index="0"></span>   
        </label>
        <button class="button" data-index="0">
          Reset
        </button>
      </div>
    </div>
    <!-- Width Controls -->
    <div class="slider-container">
      <input type="range" min="75" max="100" value="100" class="slider" id="text-width" name="text-width" data-index="1">
      <div class="slider-controls">
        <label for="text-width" class="slider-label">
          Width: <span class="output" data-index="1"></span>  
        </label>
        <button class="button" data-index="1">
          Reset
        </button>
      </div>
    </div>
    <!-- Slant Controls -->
    <div class="slider-container">
      <input type="range" min="0" max="12" value="0" class="slider" id="text-slant" name="text-slant" data-index="2">
      <div class="slider-controls">
        <label for="text-slant" class="slider-label">
          Slant: <span class="output" data-index="2"></span>  
        </label>
        <button class="button" data-index="2">
          Reset
        </button>
      </div>
    </div>
  </div>
</main>

/* Load the variable font */
@font-face {
  font-family: 'Roboto VF';
  src: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/57225/Roboto-VF.woff2') format('woff2-variations');
  font-stretch: 75% 100%;
  font-style: oblique 0deg 12deg;
  font-weight: 100 900;
}

:root {
  --text-weight: 500;
  --text-width: 100;
  --text-slant: 0;
}

html {
  box-sizing: border-box;
}

*, *:before, *:after {
  box-sizing: inherit;
}

body {
  margin: 0;
}

.container {
  font-family: "Roboto VF", "Roboto", sans-serif;
  margin: 0 auto;
  max-width: 60rem;
  padding: 3rem;
  text-align: center;
}

.demo-text {
  font-size: 5rem;
  font-stretch: var(--text-width);
  font-style: oblique var(--text-slant);
  font-weight: var(--text-weight);
  font-variation-settings: "wght" var(--text-weight), "wdth" var(--text-width), "slnt" var(--text-slant);
  margin: 0;
}

.controls {
  margin-top: 3rem;
}

.slider-container:not(:first-child) {
  margin-top: 3rem;
} 

.slider-controls {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
  
}

.slider-label {
  font-size: 1.25rem;
  font-style: normal;
  font-variation-settings: "slnt" var(--text-slant);
  font-weight: 650;
}

.output {
  font-style: normal;
  font-variation-settings: "slnt" var(--text-slant);
  font-weight: 400;
}

.slider {
  -webkit-appearance: none;
  width: 100%;
  height: 1rem;
  border-radius: .25rem;
  background: #dee7ec;
  outline: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: #456bd9;
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: #456bd9;
  cursor: pointer;
}

.slider::-webkit-slider-thumb:active {
  cursor: -webkit-grabbing;
}

.slider::-moz-range-thumb:active {
  cursor: -moz-grabbing;
}

.button {
  background: #fff;
  border: 3px solid #dee7ec;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 400;
  opacity: 1;
  padding: .25rem .75rem;
  transition: background ease-in .2s;
}

.button:hover,
.button:focus {
  background: #eaf0f3;
}

const container = document.querySelector(".container");
const sliders = document.querySelectorAll(".slider");
const sliderValues = document.querySelectorAll(".output");
const buttons = document.querySelectorAll(".button");

// Display property values
for (let i = 0; i < sliders.length; i++) {
  sliderValues[i].innerHTML = sliders[i].value;
}

// Update text property and displayed property value for each slider
sliders.forEach(slider => {
    const sliderIndex = slider.getAttribute("data-index");
    const output = document.querySelector(`.output[data-index="${sliderIndex}"]`);
    slider.oninput = function() {
      container.style.setProperty(`--${this.id}`, this.value);
      output.innerHTML = this.value;
    };
  });

// Reset text property and update display property value for each slider
buttons.forEach(button => {
  const buttonIndex = button.getAttribute("data-index");
  const resetOutput = document.querySelector(
    `.output[data-index="${buttonIndex}"]`
  );
  const resetSlider = document.querySelector(
    `.slider[data-index="${buttonIndex}"]`
  );
  button.onclick = function() {
    container.style.removeProperty(`--${resetSlider.id}`);
    resetOutput.innerHTML = resetSlider.defaultValue;
    resetSlider.value = resetSlider.defaultValue;
    console.log(resetSlider.defaultValue);
  };
});