body {
  background: #ddd;
}
$dur: 0.2s;

.yosemite-search {
  position: absolute;
  top: 50%;
  left: 50%;
  margin: -15px -150px;
  width: 300px;
  background: #fff;
  border-radius: 4px;
  font-family: sans-serif;
  font-weight: 300;
  * {
    backface-visibility: hidden;
    font: inherit;
  }
  .clear {
    display: block;
    position: absolute;
    z-index: 1;
    top: 50%;
    right: 8px;
    height: 16px;
    width: 16px;
    border: 0;
    padding: 0;
    margin: -8px 0 0;
    border-radius: 100%;
    text-align: center;
    background: #7d7d7d;
    color: #fff;
    transform: scale(0);
    transition: transform $dur ease-in-out;
    cursor: default;
    display: flex;
    align-items: center;
    justify-content: center;
    
    &:focus {
      outline: 0;
    }
    
    svg {
      fill: #fff;
      height: 12px;
      width: 12px;
    }
  }
  .ring {
    z-index: 0;
    position: absolute;
    border-radius: inherit;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    box-shadow: 
      0 1px 1px -1px rgba(0,0,0,0.4),
      0 0 0 30px rgba(#8dbaea, 0);
    transition: box-shadow 0 ease-in-out;
    
    svg {
      fill: #333;
      position: absolute;
      top: 50%;
      left: 50%;
      margin: -7px;
      height: 14px;
      width: 14px;
      margin-left: -45px;
      transition: margin $dur ease-in-out;
    }
  }

  
  input {
    display: block;
    position: relative;
    z-index: 1;
    box-shadow: none;
    background: none;
    border: 0;
    margin: 0 auto;
    padding: 3px 28px; 
    width: 54px;
    font-size: 0.9em;
    
    &::placeholder {
      color: #bbb;
    }
    
    transition: width $dur ease-in-out;
    
    &:focus, &:valid {
      outline: 0;
      width: 250px;
      &::placeholder {
        color: #ddd;
      }
      + .ring {
        transition-duration: $dur;
        box-shadow: 
          0 1px 1px -1px rgba(0,0,0,0.4),
          0 0 0 3px #8dbaea;

        svg {
          margin-left: -145px;
        }
      }
      ~ .clear {
        transform: scale(0.8);
      }
    }
  }
}