/* https://css-tricks.com/fun-viewport-units/ */
/* https:/stackoverflow.com/questions/20590239/maintain-aspect-ratio-of-div-but-fill-screen-width-and-height-in-css/36295495#20593342 */
:root {
    --yellow: #af8609;
}

/* Prevent ios from zooming on double tap */
button {
  touch-action: manipulation;
}

body {
    background-color: black;
    margin: 0;
    height: 100vh;    
}

  #overlay {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(0, 0, 0, .7);
    cursor: pointer;
  }

  .instruction-sheet {
    position: relative;
    color: white;
    padding: 20px;
    background-color: rgb(40, 35, 35);
    max-width: 700px;
    margin: 10px auto;
    z-index: 3000;
    cursor: default;
    font-size: 1em;
  }

  @media only screen and (min-width: 800px) {
    .instruction-sheet {
      font-size: 1.4em;
    }
  }

  #close-button svg {
    padding: 0px;
    float: right;
    cursor: pointer;
    height: 60px;
    color: white;
  }

  #close-button svg path {
    fill: white;
  }

  .example-container {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-content: center;
  }

  .example-box {
    display: flex;
    justify-content: center;
    align-items: center;
    border: solid rgb(72, 70, 70) 2px;
    width: 10%;
    aspect-ratio: 1 / 1;
    margin-right: 5px;
    font-size: 2em;
    font-family: sans-serif;
  }

  .container {
    /* For height, subtract the height of the header+margin 
    and also the margin under the keyboard */
    height: calc(100% - 58px); 
    position: relative;
  }

  /* be sure to count height and calculate above in container height */
  header {
    color: white;
    display: flex;
    justify-content: space-around;
    align-items: center;
    border-bottom: rgb(63, 63, 63) 1px solid;
    margin-bottom: 15px;
    box-sizing: border-box;
  }

  header h1 {
    font-size: 1em;
    font-weight: 600;
  }

  .board {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(6, 1fr);
    grid-gap: 5px;
    width: 100vw;
    height: calc(7.3/5*100vw);
    max-height: 50vh;
    max-width: calc(5/7.3*60vh);
    margin: auto; 
  }
  
  .box {
    border: gray 2px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3em; 
    padding: 0;
    margin: 0;
    font-weight: 200;
    font-family: sans-serif;
  }

  .box-container {
    color: white;
    aspect-ratio: 1 / 1;
    font-size: 3em; 
    padding: 0;
    margin: 0;
    font-weight: 200;
    font-family: sans-serif;
    position: relative;
    perspective: 1000;
  }

  .inner-box-container {
    box-sizing: border-box;
    position: absolute;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;  
  }
  
  .box-front-side, .box-back-side {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    text-align: center;
    border: solid rgb(72, 70, 70) 2px;
    box-sizing: border-box;
  }

  .box-back-side {
    transform: rotateX(180deg);
    -webkit-transform: rotateX(180deg);
  }

  .box-front-side span, .box-back-side span {
    position: absolute;
    margin: 0;
    padding: 0;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }
  
  .flip {
    transform: rotateX(180deg);
  }

  .pulse {
    animation-name: pulse;
    animation-duration: 0.1s;
    border-color: rgb(185, 165, 165);
  }

  @keyframes pulse {
    0% {
      width: 100%;
      height: 100%;
      transform: translate(0, 0);
    }
    50% {
      width: 105%;
      height: 105%;
      transform: translate(-2px, -2px);
    }
    100% {
      width: 100%;
      height: 100%;
      transform: translate(0, 0);
    }
  }

  .shake {
    animation-name: shake;
    animation-duration: .1s;
    animation-iteration-count: 8;
  }

  @keyframes shake {
    0% { transform: translateX(0px) }
    33% { transform: translateX(-3px) }
    66% { transform: translateX(0px) }
    75% { transform: translateX(3px) }
    100% { transform: translateX(0px) }
  }

  .keyboard {
    position: absolute;
    top: 60%;
    bottom: 100px;
    right:0;
    left: 0;
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    grid-gap: 3px;
    max-width: 800px;
    margin: 0 auto;    
  }

  .keyboard button {
    color: black;
    font-size: 4vw;
    padding: 0;
  }

  @media only screen and (min-width: 1000px) {
    .keyboard {
      max-width: 900px;
    }
    .keyboard button {
      font-size: 34px;
    }
  }

  .green {
    background-color: green;
    border-color: green;
  }

  .yellow {
    background-color: var(--yellow);
    border-color: var(--yellow);
  }

  .light-gray {
    background-color: #aaa3a3;
    border-color: #aaa3a3;

  }

  .dark-gray {
    background-color: #534c4c;
    border-color: #534c4c;
  }

  .you-lose, .you-win, .show-wrong-word {
    z-index: 1000;
    visibility: hidden;
    position: absolute;
    right: 50%;
    transform: translate(50%, 50%);
    text-align: center;
    padding: 10%;
    border-radius: 5px;
    background-color: white;
  }

  .you-win {
    background-color: rgb(24, 187, 43);
    font-size: 2em;
    color: rgb(9, 8, 8);
    padding: 0px 30px;
  }

  #hint-close-button {
    position: absolute;
    right: -16px;
    top: 8px;
  }
  
  #hint-close-button svg {
    cursor: pointer;
    height: 30px;

  }

  #hint-close-button svg path {
    fill: white;
  }

  #cheat-sheet {
    position: absolute;
    right: 10%;
    display: none;
    z-index: 20000;
    width: 200px;
    height: 70%;
    color: white;
    background-color: rgba(0, 0, 0, .7);
    box-sizing: border-box;
    margin-left: 1em;
  }

  #cheat-sheet textarea {
    width: calc(100% - 6px);
    height: calc(100% - 1em);
    border: solid gray 3px;
    background-color: black;
    color: white;
    padding: 1em;
  }

  .show-hint {
    display: block !important;
  }

  #lets-play, .play-again {
    display: block;
    background-color: rgb(228, 224, 17);
    font-size: 2em;
    padding: 10px;
    border-radius: 5px;
    position: relative;
    width: 300px;
    margin: 0 auto;
    margin-bottom: 10px;
  }