@layer base, components, utilities, theme;

@layer base {
  :root {
    --main-bg-color: hsl(0, 0%, 100%);
    --letter-bg-color: hsl(0, 0%, 100%);
    --modal-bg-color: #444;
    --main-font-color: #333;
    --highlight-font-color: #eee;
    --color-correct: hsl(115, 29%, 53%);
    --color-present: hsl(49, 51%, 57%);
    --color-absent: hsl(200, 2%, 48%);
    --color-fail: hsl(0, 50%, 50%);
    --border-standard: 2px solid #ccc;
    --border-highlight: 2px solid #999;
    --border-active: 2px dashed #999;
    --border-thin: 1px solid #ccc;
    --border-radius: 5px;
    --key-font-color: #333;
    --key-highlight-bg-color: #aaa;
    --key-bg-color: hsl(0, 0%, 80%);
    --key-width: 7.5%;
    --font-family: 'Work Sans', sans-serif;
    --root-font-size: clamp(15px, 1.2vw + 12px, 18px);
    --scale-h2: calc(1rem * var(1.5));
    --scale-h3: calc(1rem * var(1.25));
    --scale-credit: 0.9;
    --scale-modal: 1.1;
    --header-img-filter: none;
    --modal-font-color: #ddd;
    --backdrop-bg-color: hsla(0, 0%, 0%, 0.3);
    --checkmark-border-color: #fff;
    --box-shadow: rgba(50, 50, 93, 0.25) 0px 6px 12px -2px, rgba(0, 0, 0, 0.3) 0px 3px 7px -3px;
    --animation-delay: 0.15s;
    --stats-bar-color: hsl(0, 0%, 90%);
    --stats-fill-color: hsl(0, 0%, 60%);
  }

  @media (prefers-color-scheme: dark) {
    :root {
      --main-bg-color: hsl(0, 0%, 14%);
      --letter-bg-color: hsl(0, 0%, 25%);
      --modal-bg-color: #666;
      --main-font-color: #ccc;
      --border-standard: 2px solid #aaa;
      --border-highlight: 2px solid #ddd;
      --key-font-color: #111;
      --key-highlight-bg-color: #ccc;
      --key-bg-color: hsl(0, 0%, 67%);
      --stats-bar-color: hsl(0, 0%, 35%);
      --stats-fill-color: hsl(0, 0%, 65%);
      --header-img-filter: invert(.75);
    }
  }

  *,
  *::before,
  *::after {
    box-sizing: border-box;
    touch-action: manipulation;
  }

  html {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    margin: 0;
    padding: 0;
    font-size: var(--root-font-size);
  }

  body {
    background-color: var(--main-bg-color);
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
    margin: 0;
    padding: 0;
    color: var(--main-font-color);
    font-family: var(--font-family);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
  }

  a:link,
  a:visited,
  a:active {
    color: inherit;
    text-decoration: underline;
  }

  a:hover {
    color: var(--color-correct);
  }
}

@layer components {
  header {
    display: flex;
    width: 63vmin;
    justify-content: space-between;
    align-items: center;
    border-bottom: var(--border-standard);
    margin-bottom: 2vmin;
  }

  header img,
  .close img {
    width: clamp(25px, 4vmin, 40px);
    height: clamp(25px, 4vmin, 40px);
    cursor: pointer;
    filter: var(--header-img-filter);
  }

  aside img {
    width: 30px;
    height: 30px;
    cursor: pointer;
    filter: var(--header-img-filter);
  }

  h1 {
    text-transform: uppercase;
    font-size: 5vmin;
    font-weight: 500;
    margin: 1vmin 4vmin;
    cursor: pointer;
  }

  #keyboard {
    position: relative;
    display: flex;
    margin: 3vmin auto;
    justify-content: space-between;
    align-items: stretch;
    gap: 1vmin;
    padding: 2vmin;
    flex-wrap: wrap;
    max-width: 95vmin;
  }

  .key {
    cursor: pointer;
    flex-grow: 1;
    flex-shrink: 1;
    flex-basis: var(--key-width);
    background-color: var(--key-bg-color);
    color: var(--key-font-color);
    text-transform: uppercase;
    font-size: 3vmin;
    border-radius: 1vmin;
    padding: 1vmin;
    line-height: 2;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .input {
    flex-grow: 18;
  }

  .key:active,
  .key.pressed {
    cursor: pointer;
    background-color: var(--key-highlight-bg-color);
    color: var(--key-font-color);
    transform: translateY(1px);
  }

  .key.disabled {
    background-color: var(--color-absent);
    cursor: not-allowed;
    color: inherit;
  }

  .key.disabled:active,
  .key.disabled.pressed {
    transform: none;
    color: inherit;
  }

  .row {
    display: flex;
    margin: 0 auto;
    justify-content: center;
  }

  .letter {
    border: var(--border-highlight);
    background-color: var(--letter-bg-color);
    width: 8vmin;
    height: 8vmin;
    margin: 0.5vmin;
    padding: 0.5vmin;
    font-size: 6vmin;
    text-align: center;
    line-height: 1.1;
    text-transform: uppercase;
    font-weight: 500;
    transition: all 0.5s;
  }

  .letter:empty {
    border: var(--border-standard);
  }

  .letter.active {
    position: relative;
  }

  .letter.active::after {
    content: "";
    position: absolute;
    left: 10px;
    top: 50%;
    width: 2px;
    height: 70%;
    background-color: var(--main-font-color);
    transform: translateY(-50%);
    animation: blinkCursor 1.5s linear infinite;
  }

  .correct {
    background-color: var(--color-correct);
    border-color: var(--color-correct);
    color: var(--highlight-font-color);
  }

  .present {
    background-color: var(--color-present);
    border-color: var(--color-present);
    color: var(--highlight-font-color);
  }

  .absent {
    background-color: var(--color-absent);
    border-color: var(--color-absent);
    color: var(--highlight-font-color);
  }

  .backdrop {
    position: fixed;
    inset: 0;
    z-index: 500;
    background-color: var(--backdrop-bg-color);
  }

  .close {
    position: absolute;
    top: 1.5vmin;
    right: 1.5vmin;
  }

  aside {
    position: absolute;
    z-index: 1000;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 63vmin;
    max-height: 90dvh;
    overflow-y: auto;
    background-color: var(--letter-bg-color);
    padding: 2vmin;
    box-shadow: var(--box-shadow);
  }

  aside .row {
    justify-content: flex-start;
  }

  #stats .stats-list {
    list-style: none;
    padding: 0;
  }

  .stats-row {
    display: flex;
    align-items: center;
    gap: 1vmin;
    margin: 1.5vmin 0;
  }

  .stats-label {
    width: 1.5em;
  }

  .stats-bar {
    position: relative;
    flex: 1;
    height: 3vmin;
    background-color: var(--stats-bar-color);
    overflow: hidden;
  }

  .stats-fill {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 0%;
    background-color: var(--stats-fill-color);
    transition: width 1s ease-in-out;
  }

  .stats-count {
    min-width: 2.5em;
    text-align: right;
  }

  .stats-row.mine .stats-fill {
    background-color: var(--color-correct);
  }

  .stats-row.fail.mine .stats-fill {
    background-color: var(--color-fail);
  }

  .stats-actions {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin: 1em 0 0.5em 0;
  }

  button {
    font-family: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5em;
    margin: 0;
    padding: 1em;
    font-size: inherit;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    min-width: 250px;
    color: inherit;
    font-weight: 500;
  }

  .restart {
    background-color: var(--key-bg-color);
    color: var(--key-font-color);
  }

  #shareChallengeButton {
    background-color: transparent;
  }

  .restart:active {
    background-color: var(--key-highlight-bg-color);
  }

  .restart:active,
  #shareChallengeButton:active {
    transform: translateY(1px);
  }

  aside .letter {
    width: 1.5em;
    height: 1.5em;
    margin: 0.2em;
    padding: 0.1em;
    font-size: 1.8em;
    line-height: 1.1;
  }

  .modal {
    top: 22%;
    z-index: 1500;
    width: initial;
    background-color: var(--modal-bg-color);
    color: var(--modal-font-color);
    border-radius: var(--border-radius);
    font-size: calc(1rem * var(--scale-modal));
    text-align: center;
  }

  h2 {
    font-size: var(--scale-h2);
    font-weight: 600;
    margin: 0;
  }

  h3 {
    font-size: var(--scale-h3);
    font-weight: 600;
  }

  .option {
    display: block;
    position: relative;
    padding: 0 0 0 2.5em;
    margin: 1.5em 0;
    cursor: pointer;
    user-select: none;
    line-height: 1.5;
  }

  .option input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
  }

  .checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 1.5em;
    width: 1.5em;
    background-color: var(--color-absent);
  }

  .option input:checked~.checkmark {
    background-color: var(--color-correct);
  }

  .checkmark:after {
    content: "";
    position: absolute;
    display: none;
  }

  .option input:checked~.checkmark:after {
    display: block;
  }

  .option .checkmark:after {
    left: 0.5em;
    top: 0.15em;
    width: 0.5em;
    height: 1em;
    border: solid var(--checkmark-border-color);
    border-width: 0 3px 3px 0;
    transform: rotate(45deg);
  }

  hr {
    border: none;
    border-top: 1px solid var(--main-font-color);
    margin: 1em 0;
    width: 100%;
  }

  .credit {
    font-size: calc(1rem * var(--scale-credit));
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  @media only screen and (max-width: 450px) and (orientation: portrait) {
    header {
      width: 88vw;
    }

    h1 {
      font-size: 8vmin;
    }

    .letter {
      width: 16vmin;
      height: 16vmin;
      margin: 1vmin;
      padding: 1vmin;
      font-size: 11vmin;
    }

    h2 {
      margin: 0;
    }

    h3 {
      margin: 0 0 2vmin 0;
    }

    #keyboard {
      justify-content: space-between;
      align-items: stretch;
      gap: 1vmin;
      padding: 1vmin;
      max-width: 99vmin;
    }

    .key {
      font-size: 5vmin;
    }

    .input {
      font-size: 4vmin;
    }

    aside {
      width: 88vmin;
      padding: 3vmin;
    }

    .stats-bar {
      height: 7vmin;
    }
  }
}

@layer utilities {
  .hidden {
    display: none !important;
  }

  .jump {
    animation: jump 0.5s;
  }

  .shake {
    animation: shake 0.5s;
  }

  .letter:nth-child(1) {
    animation-delay: calc(var(--animation-delay)*1);
  }

  .letter:nth-child(2) {
    animation-delay: calc(var(--animation-delay)*2);
  }

  .letter:nth-child(3) {
    animation-delay: calc(var(--animation-delay)*3);
  }

  .letter:nth-child(4) {
    animation-delay: calc(var(--animation-delay)*4);
  }

  .letter:nth-child(5) {
    animation-delay: calc(var(--animation-delay)*5);
  }

  @keyframes jump {
    0% {
      transform: translateY(0vmin);
    }

    50% {
      transform: translateY(-2vmin);
    }

    100% {
      transform: translateY(0vmin);
    }
  }

  @keyframes blinkCursor {

    0%,
    50% {
      opacity: 1;
    }

    50.01%,
    100% {
      opacity: 0;
    }
  }

  @keyframes shake {
    0% {
      transform: translateX(0vmin);
    }

    20%,
    60% {
      transform: translateX(-1vmin);
    }

    40%,
    80% {
      transform: translateX(1vmin);
    }

    100% {
      transform: translateX(0vmin);
    }
  }
}