* {
  box-sizing: border-box;
  
}

html,
body {
  margin: 0 0;
  padding: 0;
  height: 100%;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: #212121;
  font-family: 'Roboto', Helvetica, Arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.donut {
  position: relative;
  width: 240px;
  height: 240px;
}

.donut__copy {
  text-align: center;
  width: 100%;
  height: 100%;
  padding-top: 68px;
  top: 0;
  left: 0;
  position: absolute;
}

.donut__title,
.donut__secondary {
  display: block;
  margin: 0;
  padding: 0;
}

.donut__title,
.donut__spic {
  color: lighten(#7a5bcf, 5%);
  font-weight: 200;
}

.donut__title {
  font-size: 79px;
  position: relative;
  animation: donutTitleFadeLeft 800ms 200ms cubic-bezier(.99,.01,.22,.94) forwards;
  opacity: 0;
  transform: translateX(0);
}

.donut__spic {
  position: absolute;
  top: 20px;
  font-size: 30px;
  line-height: 1em;
  content: "%";
  animation: donutTitleFadeRight 800ms 200ms cubic-bezier(.99,.01,.22,.94) forwards;
  opacity: 0;
  transform: translateY(-20px);
}

@keyframes donutTitleFadeLeft {
  from {
    opacity: 0;
    transform: translateX(0);
  }
  
  to {
    opacity: 1;
    transform: translateX(-10px);
  }
}

@keyframes donutTitleFadeRight {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

// NOTE FOR SELF - Get better at maths
// =========
// The stroke-dasharray is the circumfrence of the circle.
// which can be worked out using 2πr.
//
// To animate this, you need to work out the percentage of this value. So for example,
// to show 84%, we would need 84% of 628.32 which is 527.7888. This would show 26%, so
// we then take this away from the original value, which would leave 100.5312

// The radius of the circle
$radius: 90;

// This is the percentage that we want to show
$percent: 82;

$circumference: (pi() * (2 * $radius));
$stroke_percentage: $circumference - (($percent / 100) * $circumference);

.donut__svg {
  transform: rotate(-90deg);
}

.donut__svg__circle--one {
  stroke-dasharray: $circumference;
  stroke-dashoffset: $circumference;
}

.donut__svg__circle--one {
    animation: donut-show-one 1200ms cubic-bezier(.99,.01,.62,.94) .5s forwards;
    transition: stroke-dasharray 400ms ease-in-out;
}

@keyframes donut-show-one {
  to {
    stroke-dashoffset: $stroke_percentage;
  }
}




//
//
.info {
  font-size: 14px;
  color: #999;
  position: absolute;
  flex: 1;
  bottom: 40px;
  width: 100%;
  left: 0;
  text-align: center;
  
  a {
    color: #999;
  }
}