CodePen Embed - Rabbit crossing

<div class="container">
  <h1 class="bun-title">Rabbits</h1>
  <input checked id="bunnie" type="radio" name="buns" class="bun-control">
  <label class="bun-label" for="bunnie">Bunnie</label>
  <input id="carmen" type="radio" name="buns" class="bun-control">
  <label class="bun-label" for="carmen">Carmen</label>
  <input id="chrissy" type="radio" name="buns" class="bun-control">
  <label class="bun-label" for="chrissy">Chrissy</label>
  <input id="dotty" type="radio" name="buns" class="bun-control">
  <label class="bun-label" for="dotty">Dotty</label>
  <input id="hopkins" type="radio" name="buns" class="bun-control">
  <label class="bun-label" for="hopkins">Hopkins</label>
  <input id="ruby" type="radio" name="buns" class="bun-control">
  <label class="bun-label" for="ruby">Ruby</label>
  <input id="snake" type="radio" name="buns" class="bun-control">
  <label class="bun-label" for="snake">Snake</label>
  <div class="bun-output">
    <div class="bun">
      <div class="bun-head">
        <div class="bun-ear bun-ear-left"></div>
        <div class="bun-ear bun-ear-right"></div>
        <div class="bun-face">
          <div class="bun-face-inner"></div>
          <div class="bun-eye bun-eye-left"></div>
          <div class="bun-eye bun-eye-right"></div>
          <div class="bun-blush bun-blush-left"></div>
          <div class="bun-blush bun-blush-right"></div>
          <div class="bun-mouth"></div>
        </div>
      </div>
      <div class="bun-body">
        <div class="bun-arm bun-arm-left"></div>
        <div class="bun-arm bun-arm-right"></div>
        <div class="bun-leg bun-leg-left"></div>
        <div class="bun-leg bun-leg-right"></div>
        <div class="bun-shirt"></div>
      </div>
    </div>
  </div>
</div>

@import 'https://fonts.googleapis.com/css?family=Varela+Round&display=swap';
$black: #444;
$white: #fff;
$grey: #eaeaea;

$primary-color: #91dcc8;
$primary-color-dark: darken($primary-color, 20%);
$primary-color-dark-2: darken($primary-color, 30%);
$primary-color-tint: lighten($primary-color, 15%);

$primary-font: 'Varela Round', sans-serif;
$primary-border-radius: 3rem;
$xs: 576px;

$bun-count: 7 + 1;

$blush-color: #f090dd;

$bunnie-fur-color: #ed6a41;
$bunnie-fur-color-dark: darken($bunnie-fur-color, 10%);
$bunnie-shirt-color: #d4fb7e;
$bunnie-shirt-pattern-color: 91, 192, 110;
$bunnie-shirt-pattern2-color: 238, 129, 99;
$bunnie-shirt-pattern3-color: 255, 255, 100;
$bunnie-face-inner-color: #fffebe;
$bunnie-ear-inner-color: #fffebe;
$bunnie-arm-color: #fffebe;
$bunnie-arm-inner-color: #f5b777;

$carmen-fur-color: #764937;
$carmen-fur-color-dark: darken($carmen-fur-color, 10%);
$carmen-shirt-color: #67cdd2;
$carmen-shirt-pattern-color: 95, 53, 14;
$carmen-face-inner-color: #fffff5;
$carmen-ear-inner-color: #9ef8ea;
$carmen-arm-inner-color: #fffff5;

$chrissy-fur-color: #f4c0e7;
$chrissy-fur-color-dark: darken($chrissy-fur-color, 10%);
$chrissy-shirt-color: #fbfeff;
$chrissy-shirt-dot1-color: #59c2f6;
$chrissy-shirt-dot2-color: #ec657d;
$chrissy-shirt-dot3-color: #f0b342;
$chrissy-shirt-dot4-color: #57b739;
$chrissy-ear-inner-color: transparent;
$chrissy-arm-color: #fcf8f1;
$chrissy-face-inner-color: #fcf8f1;
$chrissy-face-inner-hair-color: #fffe80;

$dotty-fur-color: #353637;
$dotty-fur-color-dark: darken($dotty-fur-color, 10%);
$dotty-arm-color: #f7fcfe;
$dotty-arm-inner-color: $dotty-fur-color;
$dotty-leg-color: #f7fcfe;
$dotty-shirt-color: #6660e6;
$dotty-face-inner-color: #f7fcfe;
$dotty-ear-inner-color: #87dcd7;

$hopkins-fur-color: #66d9fa;
$hopkins-fur-color-dark: darken($hopkins-fur-color, 10%);
$hopkins-shirt-color: #f6fcff;
$hopkins-shirt-pattern-color: 68, 118, 218;
$hopkins-ear-inner-color: #f2ef5b;

$ruby-fur-color: #faf9fc;
$ruby-fur-color-dark: darken($ruby-fur-color, 10%);
$ruby-leg-color: #f1d5d8;
$ruby-shirt-color: #71e0d1;
$ruby-shirt-pattern-color: #eeeee9;
$ruby-ear-inner-color: #f2a47b;
$ruby-eye-color: #d25951;
$ruby-arm-color: $ruby-fur-color;
$ruby-arm-inner-color: $ruby-leg-color;

$snake-fur-color: #f091c6;
$snake-fur-color-dark: darken($snake-fur-color, 10%);
$snake-hood-color: #3065d8;
$snake-blush-color: #fbe452;
$snake-shirt-color: #373734;
$snake-shirt-pattern-color: #d7d5d2;
$snake-ear-inner-color: #fbedf8;
$snake-arm-color: $snake-hood-color;
$snake-leg-color: $snake-hood-color;
$snake-metal-color: #d7d5d2;
$snake-face-inner-color: $snake-fur-color;

@mixin border-radius($top: 0, $bottom: 0) {
  border-top-left-radius: $top;
  border-top-right-radius: $top;
  border-bottom-right-radius: $bottom;
  border-bottom-left-radius: $bottom;
}

@mixin absolute-fill($pseudo: false) {
  @if ($pseudo) {
    content: '';
  }
  
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
}

* { box-sizing: border-box; }
body {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  height: 100vh;
  padding: 2rem 1rem;
  background-color: $primary-color;
  font-family: $primary-font;
  font-size: 16px;
  line-height: 1.875em;
}

.container {
  display: grid;
  max-width: 37.5rem;
  width: 100%;
  margin: auto 0;
  border-radius: $primary-border-radius;
  background-color: $white;
  box-shadow: 0 0 0 0.5rem $white, 0.5rem 0.5rem 0 0.5rem $primary-color-dark;
  overflow: hidden;
  
  @media(min-width: $xs) {
    grid-template-columns: 2fr 1fr;
  }
}

.bun {
  --head-color: #{$primary-color};
  --ear-color: var(--head-color);
  --ear-inner-color: #{$primary-color-tint};
  --arm-color: var(--head-color);
  --arm-inner-color: transparent;
  --leg-color: var(--head-color);
  --leg-inner-color: transparent;
  --shirt-color: #{$primary-color-dark};
  --eye-color: #{$black};
  --blush-color: #{$blush-color};
  --mouth-color: #{$black};
  
  padding-top: 7rem;
  
  &-title {
    position: absolute;
    z-index: 10;
    grid-column: 1;
    grid-row: 1 / 2;
    padding: 0.75rem 1.25rem;
    border-radius: 2rem;
    box-shadow: 0.25rem 0.25rem 0 $primary-color-dark-2;
    background-color: $primary-color-dark;
    font-size: 2rem;
    color: $white;
    transform: rotate(-10deg) translate(-0.5rem, -2rem);
  }
  
  &-label {
    position: relative;
    z-index: 1;
    padding: 0.5em 1rem;
    font-size: 1.25rem;
    cursor: pointer;
    overflow: hidden;
    transition: color 0.25s;
    
    @media(min-width: $xs) {
      grid-column: 2;
    }
    
    &::before {
      content: '';
      position: absolute;
      z-index: -1;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      transform: scaleX(0);
      transform-origin: left center;
      border-top-right-radius: 2rem;
      border-bottom-right-radius: 2rem;
      background-color: $primary-color-tint;
      transition: transform 0.35s ease-in-out, border-radius 0.25s 0.2s ease-in-out;
    }
    
    &:hover {
      color: $primary-color-dark;
    }
  }
  
  &-control {
    position: absolute;
    opacity: 0;
    visibility: hidden;
    
    &:checked {
      + .bun-label {
        color: $primary-color-dark-2;
        
        &::before {
          border-top-right-radius: 0;
          border-bottom-right-radius: 0;
          transform: scaleX(1);
        }
      }
    }
  }
  
  &-output {
    display: flex;
    align-items: center;
    justify-content: center;
    grid-column: 1;
    grid-row: 1 / #{$bun-count};
    background-color: $primary-color-tint;
  }
  
  &-head {
    position: relative;
    z-index: 2;
    height: 8.25rem;
    width: 10rem;
  }
  
  &-face {
    @include absolute-fill;
    @include border-radius(45% 60%, 40% 40%);
    
    background-color: var(--head-color);
    overflow: hidden;
    
    &-inner {
      position: absolute;
      top: var(--face-in1-top, 0);
      left: var(--face-in1-left, 0);
      height: var(--face-in1-height, 0);
      width: var(--face-in1-width, 0);
      border-radius: var(--face-in1-border-radius, 0);
      background-color: var(--face-in1-background-color, transparent);
      overflow: var(--face-in1-overflow, visible);
      
      &::before,
      &::after {
        content: '';
        position: absolute;
      }
      
      &::before {
        top: var(--face-in2-top, 0);
        left: var(--face-in2-left, auto);
        right: var(--face-in2-right, auto);
        height: var(--face-in2-height, 0);
        width: var(--face-in2-width, 0);
        border-radius: var(--face-in2-border-radius, 0);
        background-color: var(--face-in2-background-color, transparent);
      }
      
      &::after {
        top: var(--face-in3-top, 0);
        left: var(--face-in3-left, auto);
        right: var(--face-in3-right, auto);
        height: var(--face-in3-height, 0);
        width: var(--face-in3-width, 0);
        border-radius: var(--face-in3-border-radius, 0);
        background-color: var(--face-in3-background-color, transparent);
      }
    }
  }
  
  &-eye {
    @include border-radius(50% 50%, 50% 40%);
    
    position: absolute;
    z-index: 5;
    top: 4.375rem;
    height: 1.625rem;
    width: 1rem;
    background-color: var(--eye-color);
    box-shadow: var(--eye-box-shadow, none);
    animation: blinky 7s infinite;
    
    &::before {
      // content: '';
      position: absolute;
      top: 20%;
      left: 20%;
      height: 0.5rem;
      width: 0.375rem;
      border-radius: 50%;
      background-color: $white;
    }
    
    &-left {
      left: 2rem;
    }
    
    &-right {
      right: 2rem;
    }
  }
  
  &-blush {
    position: absolute;
    z-index: 4;
    top: 5.625rem;
    height: 1.25rem;
    width: 1.75rem;
    border-radius: 50%;
    background-color: var(--blush-color);
    opacity: 0.3;
    
    &-left {
      left: 0.625rem;
    }
    
    &-right {
      right: 0.625rem;
    }
  }
  
  &-mouth {
    position: absolute;
    top: 6.125rem;
    left: 50%;
    width: 0.75rem;
    height: 0.5rem;
    border-radius: 50%;
    border-bottom: 3px solid var(--mouth-color);
    transform: translateX(-50%);
  }
  
  &-ear {
    @include border-radius(3.5rem, 50% 100%);
    
    position: absolute;
    bottom: calc(100% - 2rem);
    height: 6.5rem;
    width: 3.5rem;
    background-color: var(--ear-color);
    background-image: var(--ear-background, none);
    background-position: var(--ear-background-position, 0 0);
    background-size: var(--ear-background-size, auto);
    transform-origin: bottom center;
    
    &::before {
      content: '';
      position: absolute;
      bottom: 0;
      left: 1rem;
      height: 65%;
      width: calc(100% - 2rem);
      border-radius: inherit;
      background-color: var(--ear-inner-color);
    }
    
    &-left {
      left: 1rem;
      transform: rotate(-5deg);
      animation: earMoveLeft 5s infinite;
    }
    
    &-right {
      right: 1rem;
      transform: rotate(5deg);
    }
  }
  
  &-body {
    position: relative;
    z-index: 1;
    top: -1.5rem;
    left: 50%;
    height: 4.5rem;
    width: 4.25rem;
    transform: translateX(-50%);
  }
  
  &-shirt {
    @include absolute-fill;
    @include border-radius(0, 50% 0.75rem);
    
    z-index: 5;
    transform: perspective(1rem) rotateX(7deg);
    background-color: var(--shirt-color);
    background-image: var(--shirt-background, none);
    background-position: var(--shirt-background-position, 0 0);
    background-size: var(--shirt-background-size, auto);
  }
  
  &-arm {
    @include border-radius(0, 50% 100%);
    
    position: absolute;
    z-index: 2;
    top: 1.5rem;
    height: 2rem;
    width: 1.25rem;
    background-color: var(--arm-color);
    transform-origin: top center;
    overflow: hidden;
    transition: transform 0.3s ease-in-out;
    
    &::before {
      content: '';
      position: absolute;
      top: var(--arm-inner-top, calc(100% - 1rem));
      left: var(--arm-inner-left-left, 0);
      width: var(--arm-inner-width, 100%);
      height: var(--arm-inner-height, 1rem);
      border-radius: var(--arm-inner-border-radius, 0);
      background: var(--arm-inner-color);
    }
    
    &-left {
      left: 0;
      transform: rotate(var(--arm-rotate-left, 40deg));
    }
    
    &-right {
      right: 0;
      transform: rotate(var(--arm-rotate-right, -40deg));
      
      &::before {
        left: var(--arm-inner-left-right, 0);
      }
    }
  }
  
  &-leg {
    @include border-radius(0, 50% 100%);
    
    position: absolute;
    z-index: 2;
    top: 100%;
    height: 2rem;
    width: 1.75rem;
    background-color: var(--leg-color);
    transform-origin: top center;
    overflow: hidden;
    transition: transform 0.3s 0.15s ease-in-out;
    
    &::before {
      content: '';
      position: absolute;
      top: var(--leg-inner-top, calc(100% - 1rem));
      left: var(--leg-inner-left, 0);
      width: var(--leg-inner-width, 100%);
      height: var(--leg-inner-height, 1rem);
      background: var(--leg-inner-color);
    }
    
    &-left {
      left: 0.25rem;
      transform: rotate(var(--leg-rotate-left, 0deg));
    }
    
    &-right {
      right: 0.25rem;
      transform: rotate(var(--leg-rotate-right, 0deg));
    }
  }
}

#bunnie:checked {
  ~ .bun-output .bun {
    --head-color: #{$bunnie-fur-color};
    --ear-color: var(--head-color);
    --ear-inner-color: #{$bunnie-ear-inner-color};
    
    --shirt-color: #{$bunnie-shirt-color};
    --shirt-background: 
      linear-gradient(transparent 10%, rgba(#{$bunnie-shirt-pattern2-color}, 0.6) 10%, rgba(#{$bunnie-shirt-pattern2-color}, 0.6) 20%, transparent 20%, transparent 30%, rgba(#{$bunnie-shirt-pattern2-color}, 0.6) 30%, rgba(#{$bunnie-shirt-pattern2-color}, 0.6) 40%, transparent 40%, transparent 70%, rgba(#{$bunnie-shirt-pattern3-color}, 0.6) 70%, rgba(#{$bunnie-shirt-pattern3-color}, 0.6) 80%, transparent 80%),
      linear-gradient(90deg, transparent 10%, rgba(#{$bunnie-shirt-pattern2-color}, 0.6) 10%, rgba(#{$bunnie-shirt-pattern2-color}, 0.6) 20%, transparent 20%, transparent 30%, rgba(#{$bunnie-shirt-pattern2-color}, 0.6) 30%, rgba(#{$bunnie-shirt-pattern2-color}, 0.6) 40%, transparent 40%, transparent 70%, rgba(#{$bunnie-shirt-pattern3-color}, 0.6) 70%, rgba(#{$bunnie-shirt-pattern3-color}, 0.6) 80%, transparent 80%),
      linear-gradient(90deg, rgba(#{$bunnie-shirt-pattern-color}, 0.6) 50%, transparent 50%), linear-gradient(transparent 50%, rgba(#{$bunnie-shirt-pattern-color}, 0.6) 50%);
      // linear-gradient(rgba(#{$bunnie-shirt-pattern-color}, 1) 25%, transparent 25%, transparent 50%, rgba(#{$bunnie-shirt-pattern-color}, 1) 50%, rgba(#{$bunnie-shirt-pattern-color}, 1) 75%, transparent 75%, transparent),
    --shirt-background-size: 1.75rem 1.75rem;
    
    --arm-color: #{$bunnie-arm-color};
    --arm-inner-color: linear-gradient(to top, #{$bunnie-arm-inner-color} 30%, #{$bunnie-arm-color});
    --arm-rotate-left: 70deg;
    --arm-rotate-right: -100deg;
    
    --leg-color: var(--head-color);
    --leg-rotate-left: -10deg;
    --leg-rotate-right: -40deg;
    
    --face-in1-top: calc(100% - 3.5rem);
    --face-in1-left: 0;
    --face-in1-height: 3.75rem;
    --face-in1-width: 100%;
    --face-in1-border-radius: 50%;
    --face-in1-background-color: #{$bunnie-face-inner-color};
    --face-in2-top: -2rem;
    --face-in2-left: 1rem;
    --face-in2-height: 4.25rem;
    --face-in2-width: 4.25rem;
    --face-in2-border-radius: 50%;
    --face-in2-background-color: var(--face-in1-background-color);
    --face-in3-top: -2rem;
    --face-in3-left: auto;
    --face-in3-right: 1rem;
    --face-in3-height: 4.25rem;
    --face-in3-width: 4.25rem;
    --face-in3-border-radius: 50%;
    --face-in3-background-color: var(--face-in1-background-color);
  }
}

#carmen:checked {
  ~ .bun-output .bun {
    --head-color: #{$carmen-fur-color};
    --ear-color: var(--head-color);
    --ear-inner-color: #{$carmen-ear-inner-color};
    
    --shirt-color: #{$carmen-shirt-color};
    --shirt-background: linear-gradient(90deg, rgba(#{$carmen-shirt-pattern-color}, 0.5) 50%, transparent 50%), linear-gradient(transparent 50%, rgba(#{$carmen-shirt-pattern-color}, 0.5) 50%);
    --shirt-background-size: 1.25rem 1.25rem;
    --shirt-background-position: 0 1rem;
    
    --arm-color: var(--head-color);
    --arm-inner-color: #{$carmen-arm-inner-color};
    --arm-inner-top: calc(100% - 0.375rem);
    --arm-inner-height: 0.375rem;
    --arm-rotate-left: 30deg;
    --arm-rotate-right: -60deg;
    
    --leg-color: var(--head-color);
    --leg-inner-color: var(--arm-inner-color);
    --leg-inner-top: var(--arm-inner-top);
    --leg-inner-height: var(--arm-inner-height);
    --leg-rotate-right: -20deg;
    
    --face-in1-top: 1rem;
    --face-in1-left: 0.5rem;
    --face-in1-height: 110%;
    --face-in1-width: calc(100% - 1rem);
    --face-in1-border-radius: 50%;
    --face-in1-background-color: #{$carmen-face-inner-color};
    --face-in2-top: 0;
    --face-in2-left: 0;
    --face-in2-height: 3rem;
    --face-in2-width: 80%;
    --face-in2-border-radius: 0 0 50% 0 / 0 0 100% 0;
    --face-in2-background-color: #{$carmen-fur-color};
  }
}

#chrissy:checked {
  ~ .bun-output .bun {
    --head-color: #{$chrissy-fur-color};
    --ear-color: var(--head-color);
    --ear-background: radial-gradient(#{$white} 40%, transparent 40%), radial-gradient(#{$white} 40%, transparent 40%);
    --ear-background-size: 5rem 5rem;
    --ear-background-position: 0 0, 2.5rem 2.5rem;
    --ear-inner-color: #{$chrissy-ear-inner-color};
    
    --shirt-color: #{$chrissy-shirt-color};
    --shirt-background: radial-gradient(#{$chrissy-shirt-dot1-color} 40%, transparent 40%), radial-gradient(#{$chrissy-shirt-dot2-color} 40%, transparent 40%);
    --shirt-background-size: 3rem 3rem;
    --shirt-background-position: 0 0, 1.5rem 1.5rem;
    
    --arm-color: #{$chrissy-arm-color};
    --arm-rotate-left: 70deg;
    --arm-rotate-right: -70deg;
    
    --leg-color: var(--head-color);
    --leg-rotate-right: -30deg;
    
    --face-in1-top: 0.5rem;
    --face-in1-left: 0.5rem;
    --face-in1-height: 110%;
    --face-in1-width: calc(100% - 1rem);
    --face-in1-border-radius: 50%;
    --face-in1-background-color: #{$chrissy-face-inner-color};
    --face-in2-top: 0;
    --face-in2-left: 35%;
    --face-in2-height: 2rem;
    --face-in2-width: 3.5rem;
    --face-in2-border-radius: 30% 70% 0 60%;
    --face-in2-background-color: #{$chrissy-face-inner-hair-color};
  }
}

#dotty:checked {
  ~ .bun-output .bun {
    --head-color: #{$dotty-face-inner-color};
    --ear-color: #{$dotty-fur-color};
    --eye-box-shadow: 0 0 0 4px #{$white};
    --ear-inner-color: #{$dotty-ear-inner-color};
    
    --shirt-color: #{$dotty-shirt-color};
    --shirt-background: linear-gradient(90deg, rgba(255, 255, 255, 0.5) 50%, transparent 50%), linear-gradient(transparent 50%, rgba(255, 255, 255, 0.5) 50%);
    --shirt-background-size: 3rem 3rem;
    --shirt-background-position: 0 0.5rem;
    
    --arm-color: #{$dotty-arm-color};
    --arm-inner-color: #{$dotty-arm-inner-color};
    --arm-inner-top: 0rem;
    --arm-inner-left-left: -0.5rem;
    --arm-inner-left-right: calc(100% - 0.5rem);
    --arm-inner-height: 1.5rem;
    --arm-inner-width: 1rem;
    --arm-inner-border-radius: 50%;
    
    --leg-color: #{$dotty-leg-color};
    --leg-rotate-left: -5deg;
    --leg-rotate-right: -10deg;
    
    --face-in1-height: 100%;
    --face-in1-width: 100%;
    --face-in2-top: 0;
    --face-in2-left: -0.5rem;
    --face-in2-height: 6.25rem;
    --face-in2-width: 50%;
    --face-in2-border-radius: 0 0.25rem 2rem 0;
    --face-in2-background-color: #{$dotty-fur-color};
    --face-in3-top: var(--face-in2-top);
    --face-in3-right: var(--face-in2-left);
    --face-in3-height: var(--face-in2-height);
    --face-in3-width: var(--face-in2-width);
    --face-in3-border-radius: 0.25rem 0 0 2rem;
    --face-in3-background-color: var(--face-in2-background-color);
  }
}

#hopkins:checked {
  ~ .bun-output .bun {
    --head-color: #{$hopkins-fur-color};
    // --eye-box-shadow: 0 0 0 4px #{$white};
    --ear-color: var(--head-color);
    --ear-inner-color: #{$hopkins-ear-inner-color};
    
    --shirt-color: #{$hopkins-shirt-color};
    --shirt-background: linear-gradient(0deg, rgba(255, 255, 255, 1) 20%, rgba(#{$hopkins-shirt-pattern-color}, 1) 20%, rgba(#{$hopkins-shirt-pattern-color}, 1) 40%, rgba(255, 255, 255, 1) 40%, rgba(255, 255, 255, 1) 60%, rgba(#{$hopkins-shirt-pattern-color}, 1) 60%, rgba(#{$hopkins-shirt-pattern-color}, 1) 80%, rgba(255, 255, 255, 1) 80%);
    --shirt-background-size: 2.5rem 2.5rem;
    --shirt-background-position: 0 1.625rem;
    
    --arm-color: var(--head-color);
    --arm-rotate-left: 60deg;
    --arm-rotate-right: -60deg;
    
    --leg-color: var(--head-color);
    --leg-rotate-left: 30deg;
    --leg-rotate-right: 5deg;
  }
}

#ruby:checked {
  ~ .bun-output .bun {
    --head-color: #{$ruby-fur-color};
    --eye-color: #{$ruby-eye-color};
    --ear-color: var(--head-color);
    --ear-background: linear-gradient(to top, #{$ruby-fur-color} 50%, #{$ruby-arm-inner-color});
    --ear-inner-color: #{$ruby-ear-inner-color};
    
    --shirt-color: #{$ruby-shirt-color};
    --shirt-background: radial-gradient(circle, #{$ruby-shirt-pattern-color} 30%, transparent 30%);
    --shirt-background-position: 0 0.75rem;
    
    --arm-color: var(--head-color);
    --arm-inner-color: linear-gradient(to top, #{$ruby-arm-inner-color} 30%, #{$ruby-arm-color});
    --arm-rotate-left: 50deg;
    --arm-rotate-right: -50deg;
    
    --leg-color: #{$ruby-leg-color};
  }
}

#snake:checked {
  ~ .bun-output .bun {
    --head-color: #{$snake-hood-color};
    --ear-color: #{$snake-fur-color};
    --ear-inner-color: #{$snake-ear-inner-color};
    --blush-color: #{$snake-blush-color};
    
    --shirt-color: #{$snake-shirt-color};
    --shirt-background: linear-gradient(90deg, transparent 45%, #{$snake-shirt-pattern-color} 45%, #{$snake-shirt-pattern-color} 55%, transparent 55%);
    
    --arm-color: #{$snake-arm-color};
    --arm-inner-color: #{$snake-metal-color};
    --arm-inner-top: calc(100% - 1rem);
    --arm-inner-height: 0.5rem;
    --arm-rotate-left: 30deg;
    --arm-rotate-right: -50deg;
    
    --leg-color: #{$snake-leg-color};
    --leg-rotate-left: 10deg;
    --leg-rotate-right: 5deg;
    
    --face-in1-top: 1rem;
    --face-in1-left: 0.5rem;
    --face-in1-height: 100%;
    --face-in1-width: calc(100% - 1rem);
    --face-in1-border-radius: 50%;
    --face-in1-background-color: #{$snake-face-inner-color};
    --face-in1-overflow: hidden;
    --face-in2-top: 0;
    --face-in2-left: 0;
    --face-in2-height: 1.75rem;
    --face-in2-width: 100%;
    --face-in2-border-radius: 0 0 50% 50% / 0 0 30% 30%;
    --face-in2-background-color: #{$snake-hood-color};
    --face-in3-top: 1.5rem;
    --face-in3-left: 0;
    --face-in3-height: 2rem;
    --face-in3-width: 100%;
    --face-in3-border-radius: 0 0 50% 50% / 0 0 30% 30%;
    --face-in3-background-color: #{$snake-metal-color};
  }
}

@keyframes blinky {
  0%, 9%, 11%, 19%, 21%, 69%, 71%, 100% { transform: scaleY(1) }
  10%, 20%, 70% { transform: scaleY(0.1) }
}

@keyframes earMoveLeft {
  0%, 100% { transform: rotate(-5deg) }
  50% { transform: rotate(-15deg) }
}

@keyframes earMoveRight {
  0%, 100% { transform: rotate(5deg) }
  50% { transform: rotate(15deg) }
}

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