// SASS VARIABLES
// =====================================
$stroke-width: 1.4;


// DEFAULT
// =====================================
:root {
  --tab-background: hsl(0deg, 33%, 99%);
  --background: hsl(313deg, 96%, 10%);
  --stroke-color: hsl(358deg, 99%, 65%);
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 20px;
  box-sizing: border-box;
  background: var(--background);
}

svg:not(.twitter-icon) {
  color: var(--stroke-color);
  height: inherit;
  fill: var(--tab-background);
  stroke: currentColor;
  stroke-width: $stroke-width;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
  position: absolute;
}


// MAIN
// =====================================
#container {
  --r: 50px;
  min-width: 400px;
  width: 400px;
  max-width: 400px;
  height: 380px;
  display: flex;
  align-items: flex-end;
  border-radius: 2px 2px var(--r) var(--r);
  overflow: hidden;
}

#tab {
  background: var(--tab-background);
  width: inherit;
  height: 120px;
  border-radius: inherit;
  padding: 20px 80px;
  box-sizing: border-box;
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.icon {
  $landed: -59px;
  $back: 0px;

  & {
    width: 38px;
    height: 38px;
    position: relative;
    z-index: 5;
    cursor: pointer;
  }

  &.active {

    &.box .l1,
    &.home .l1,
    &.calender .l1 {
      --in: -252px;
      animation: in 0.4s 1.1s forwards, landed 0.5s 1.5s forwards;
    }

    &.box .l2 {
      --in: -212px;
    }

    &.box .l3 {
      --in: -200px;
    }

    &.home .l2 {
      --in: -216px;
      animation: in 0.26s 1.14s forwards, landed 0.5s 1.5s forwards;
    }

    &.box .l2,
    &.box .l3,
    &.calender .l2,
    &.calender .l3 {
      animation: in 0.3s 1.1s forwards, landed 0.5s 1.5s forwards;
    }

    &.calender .l2 {
      --in: -190px;
    }

    &.calender .l3 {
      --in: -214px;
    }

    & .l1 svg {
      animation: out 0.1s 1s forwards, in_again 0.2s 1.6s forwards;
    }
  }

  &:not(.active) {
    animation: back 0.2s forwards;
  }

  @keyframes in {
    50% {
      transform: translateY(calc(var(--in) + 10px));
    }

    100% {
      transform: translateY(var(--in));
    }
  }

  @keyframes out {
    100% {
      fill: transparent;
    }
  }

  @keyframes landed {
    70% {
      transform: translateY($landed + 4px);
    }

    100% {
      transform: translateY($landed);
    }
  }

  @keyframes in_again {
    100% {
      fill: var(--tab-background);
    }
  }

  @keyframes back {
    0% {
      transform: translateY($landed);
    }

    100% {
      transform: translateY($back);
    }
  }
}

.box {
  .l2 svg {
    fill: transparent;
  }
}

.home {
  .l2 svg {
    transform: translateY(-1px);
    fill: transparent;
  }
}

.circle {
  $y-start: 80%;
  $y-slow: -62%;
  $y-landed: -34%;

  & {
    --s: 86px;
    width: var(--s);
    height: var(--s);
    border-radius: var(--s);
    transform: translateX(0);
    position: absolute;
    top: $y-landed;
    left: 56px;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  &[data-active="0"] {
    transform: translateX(0);
  }

  &[data-active="1"] {
    transform: translateX(101px);
  }

  &[data-active="2"] {
    transform: translateX(202px);
  }

  &[data-animating="true"] {
    animation: landY 0.5s forwards, moveX 0.5s 0.5s forwards,
      jumpY 0.5s 1s forwards, landedY 0.5s 1.5s forwards;

    &>.circle-inner::before {
      transform: scale(0);
      animation: scale 0.3s 1.2s forwards;
    }
  }

  @keyframes landY {
    100% {
      top: $y-start;
    }
  }

  @keyframes moveX {
    100% {
      transform: translateX(var(--x));
    }
  }

  @keyframes jumpY {
    100% {
      top: $y-slow;
    }
  }

  @keyframes landedY {
    70% {
      top: $y-landed + 4%;
    }

    100% {
      top: $y-landed;
    }
  }

  &-inner {
    & {
      width: inherit;
      height: inherit;
      border-radius: inherit;
    }

    &::before,
    &::after {
      content: "";
      display: inline-block;
      width: inherit;
      height: inherit;
      border-radius: inherit;
      transform-origin: center center;
      position: absolute;
    }

    &::before {
      background: var(--tab-background);
      opacity: 0.1;
      transform: scale(1.4);
    }

    &::after {
      background: var(--stroke-color);
    }

    @keyframes scale {
      0% {
        transform: scale(1);
      }

      100% {
        transform: scale(1.4);
      }
    }
  }
}


// ABS
// =====================================
.abs-twitter {

  & {
    position: fixed;
    right: calc(24px + .6vw);
    top: calc(22px + .6vw);
    transform: translate(-8px, 4px);
    opacity: 0;
    transition: .3s ease-in;
  }

  &--show {
    transform: translate(0, 0);
    opacity: 1;
    animation: birdie 1s .8s linear infinite;
  }

  @keyframes birdie {
    13% {
      transform: rotate(14deg);
    }

    26% {
      transform: rotate(28deg)
    }

    100% {
      transform: rotate(0deg)
    }
  }

}