wa/docs/snake/index.css

* {
  margin: 0;
  padding: 0;
}

@font-face {
  font-family: 'Rocher';
  src: url('./RocherColorGX.woff2') format('woff2');
}

@font-palette-values --pink {
  font-family: Rocher;
  base-palette: 1;
}

@font-palette-values --mint {
  font-family: Rocher;
  base-palette: 7;
}

:root {
  --wa-color: #00A39A;
  --wa-bg: #2e2e2e;
  --wa-bg2: #202020;
  --wa-trans: translate(-50%, -50%);
  --wa-handle-dir: calc(50% - 30px);
  --wa-shadow: 
    rgb(45 35 66 / 40%) 0 2px 4px,
    rgb(45 35 66 / 30%) 0 7px 13px -3px;
}

.tips {
  position: absolute;
  top: calc(50% - 355px);
  left: calc(50% - 392px);
  color: var(--wa-bg);
  font-family: Rocher;
  font-size: 2em;
  font-palette: --mint;
}

#box {
  background: var(--wa-color);
  border-radius: 1em;
  box-shadow: 0.2em 0.2em 2em rgba(46, 46, 46, 0.5);
  padding: 0.5em;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: var(--wa-trans)
}

#game {
  background: var(--wa-color);
  border-radius: 1em;
  display: flex;
  flex-direction: column;
  position: relative;
}

#game::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  box-shadow:
    10px 10px 30px #006E67,
    -10px -10px 40px #006E67,
    inset -10px -10px 10px #008880,
    inset 10px 10px 10px #008880,
    inset 10px 10px 10px var(--wa-color);
  filter: blur(3px);
}

.game__title {
  font-size: 1.2em;
  text-align: left;
  padding: 0 0.6em;
  margin: 0.2em 0;
  display: block;
  font-family: 'Rocher';
  position: relative;
  z-index: 1;
}

.game__title sup {
  font-size: 0.6em;
  color: #fff;
}
 
#game__screen {
  background: var(--wa-bg);
  box-shadow: var(--wa-shadow), var(--wa-bg2) 0 -3px 0 inset;
  border-radius: 1em;
  margin: 0 0.3em 0.3em;
  padding: 0.6em;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 1;
}

#game__screen-content {
  width: 320px;
  height: 320px;
  border-radius: 0.5em;
  overflow: hidden;
  aspect-ratio: 1;
  place-content: center;
  background: #8C957B;
}

#game__operate {
  flex: 1;
  padding: 0.3em;
  display: flex;
}

#game__operate-direction,
.game__operate-ghost {
  margin: 0.5em;
  width: 180px;
  height: 180px;
  position: relative;
}

#game__operate-direction .direction__item {
  align-items: center;
  appearance: none;
  background: var(--wa-bg);
  border-radius: 50%;
  border-width: 0;
  box-shadow: var(--wa-shadow), var(--wa-bg2) 0 -3px 0 inset;
  height: 60px;
  width: 60px;
  position: absolute;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  white-space: nowrap;
  will-change: box-shadow, transform;
}

#game__operate-direction .direction__item::after {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
}

#game__operate-direction .direction__item::before {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 0.5em 0.866em 0.5em;
  border-color: transparent transparent #fff transparent;
  position: absolute;
  top: 50%;
  left: 50%;
}

#game__operate-direction--up {
  top: 0;
  left: var(--wa-handle-dir);
}

#game__operate-direction--up::before {
  transform: var(--wa-trans)
}

#game__operate-direction--right {
  top: var(--wa-handle-dir);
  right: 0;
}

#game__operate-direction--right::before {
  transform: var(--wa-trans) rotate(90deg);
}

#game__operate-direction--down {
  bottom: 0;
  left: var(--wa-handle-dir);
}

#game__operate-direction--down::before {
  transform: var(--wa-trans) rotate(180deg);
}

#game__operate-direction--left {
  top: var(--wa-handle-dir);
  left: 0;
}

#game__operate-direction--left::before {
  transform: var(--wa-trans) rotate(270deg);
}

.game__operate-ghost {
  border-radius: 50%;
  background: rgba(46, 46, 46, 0.8);
  box-shadow: var(--wa-shadow), var(--wa-bg2) 0 -3px 0 inset;
}

.game__operate-ghost::before {
  content: '';
  display: block;
  width: 55px;
  height: 55px;
  background: var(--wa-bg);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: var(--wa-trans);
  z-index: 1;
}

.game__operate-ghost span {
  background: var(--wa-bg);
  height: 55px;
  width: 55px;
  position: absolute;
}

.game__operate-ghost span:nth-child(1) {
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 10px 10px 0 0;
  box-shadow: var(--wa-shadow), var(--wa-bg2) -3px 0px 0 inset;
}

.game__operate-ghost span::before {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 10px 16px 10px;
  border-color: transparent transparent var(--wa-bg2) transparent;
  position: absolute;
  top: 50%;
  left: 50%;
}

.game__operate-ghost span:nth-child(1)::before {
  transform: var(--wa-trans);
}

.game__operate-ghost span:nth-child(2) {
  top: 50%;
  left: 10px;
  transform: translateY(-50%);
  border-radius: 10px 0 0 10px;
  box-shadow: var(--wa-shadow), var(--wa-bg2) 0px -3px 0 inset;
}

.game__operate-ghost span:nth-child(2)::before {
  transform: var(--wa-trans) rotate(270deg);
}

.game__operate-ghost span:nth-child(3) {
  top: 50%;
  right: 10px;
  transform: translateY(-50%);
  border-radius: 0 10px 10px 0;
  box-shadow: var(--wa-shadow), var(--wa-bg2) -3px 0px 0 inset;
}

.game__operate-ghost span:nth-child(3)::before {
  transform: var(--wa-trans) rotate(90deg);
}

.game__operate-ghost span:nth-child(4) {
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 0 0 10px 10px;
  box-shadow: var(--wa-shadow), var(--wa-bg2) -3px -3px 0 inset;
}

.game__operate-ghost span:nth-child(4)::before {
  transform: var(--wa-trans) rotate(180deg);
}

.game__operate-assist {
  flex: 1;
  display: flex;
  position: relative;
}

.game__operate-assist--btns {
  position: absolute;
  top: 0;
  width: 8em;
  height: 2em;
}

.game__operate-assist--btns span:nth-child(1)::before,
.game__operate-assist--btns span:nth-child(1)::after {
  content: "";
  position: absolute;
  top: 0;
  width: 3em;
  height: 2em;
  align-items: center;
  appearance: none;
  background: var(--wa-bg);
  border-width: 0;
  box-shadow: var(--wa-shadow), var(--wa-bg2) 0 -3px 0 inset;;
  box-sizing: border-box;
  height: 1em;
  width: 3em;
  border-radius: 0.5em;
}

.game__operate-assist--btns span:nth-child(1)::before {
  left: 0.6em;
}

.game__operate-assist--btns span:nth-child(1)::after {
  left: 4.6em;
}

.game__operate-assist--btns span:nth-child(2)::before,
.game__operate-assist--btns span:nth-child(2)::after {
  position: absolute;
  width: 3em;
  height: 2em;
  color: var(--wa-bg2);
  font-size: 0.6em;
  font-family: 'Rocher';
  font-palette: --pink;
}

.game__operate-assist--btns span:nth-child(2)::before {
  content: "SELECT";
  top: 2em;
  left: 1.4em;
}

.game__operate-assist--btns span:nth-child(2)::after {
  content: "START";
  top: 2em;
  left: 8.4em;
}

.game__operate-assist--audio {
  position: absolute;
  bottom: 0;
  width: 5em;
  height: 3em;
  margin: 0 0 0.6em 0.6em;
}

.game__operate-assist--audio::before {
  --s: 6px;
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:radial-gradient(var(--wa-bg) 24%,#0000 15%);
  background-size: var(--s) var(--s); 
}

@media screen and (min-width: 768px) {
  #box {
    width: 768px;
    max-width: 768px;
  }

  .game__title {
    margin: 0.8em 0.2em;
  }

  .game__operate-assist {
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
  }
}

@media screen and (max-width: 768px) {
  .tips {
    display: none;
  }

  #box {
    width: 100%;
    max-width: fit-content;
  }

  .game__operate-ghost {
    display: none;
  }

  #game__operate-direction .direction__item:active {
    box-shadow: var(--wa-bg2) 0 3px 7px inset;
    transform: translateY(2px);
  }
  
}