:root {
  color: #f8f0d2;
  background: #172f2a;
  font-family: Avenir Next, Trebuchet MS, Verdana, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #172f2a;
}

.shell {
  width: min(100vmin, 100vw);
  height: min(100vmin, 100vh);
  padding: clamp(10px, 2.2vmin, 24px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto auto;
  gap: clamp(8px, 1.6vmin, 18px);
  justify-items: stretch;
  align-items: center;
}

.shell > *,
.masthead > * {
  min-width: 0;
}

.masthead {
  display: grid;
  justify-items: center;
  gap: clamp(4px, .8vmin, 9px);
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: .42em;
  color: #fff3bf;
  font-size: clamp(16px, 3vmin, 26px);
  font-weight: 500;
  line-height: 1;
  text-decoration: underline;
  text-decoration-thickness: .11em;
  text-underline-offset: .22em;
  opacity: .86;
  transition: opacity 120ms ease, transform 120ms ease;
}

.github-link:hover,
.github-link:focus-visible {
  opacity: 1;
  transform: translateY(-1px);
}

.github-link svg {
  width: 1.18em;
  height: 1.18em;
  display: block;
  fill: currentColor;
  filter: drop-shadow(0 .12em 0 #00000040);
}

h1 {
  margin: 0;
  color: #fff3bf;
  font-size: clamp(28px, 7vmin, 76px);
  line-height: .86;
  letter-spacing: -.075em;
  text-align: center;
  text-shadow: 0 .08em 0 #00000040;
}

.display-panel {
  height: 100%;
  max-width: 100%;
  padding: clamp(6px, 1.2vmin, 14px);
  justify-self: center;
  display: grid;
  place-items: center;
  border: clamp(2px, .55vmin, 6px) solid #0b1715;
  border-radius: clamp(14px, 3vmin, 32px);
  background: #0e1d1a;
  box-shadow:
    0 clamp(8px, 2vmin, 22px) 0 #08100f,
    0 clamp(16px, 5vmin, 52px) #00000066,
    inset 0 1px 0 #ffffff18;
}

#screen {
  width: auto;
  max-width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
  border-radius: clamp(8px, 1.6vmin, 18px);
  background: #f8f8f8;
}

.status {
  min-height: 1.25em;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  color: #9bf2cc;
  font-size: clamp(12px, 2.2vmin, 19px);
  font-weight: 400;
  line-height: 1.2;
  text-align: center;
  font-variant-numeric: tabular-nums;
  white-space: normal;
  overflow-wrap: anywhere;
}

.controls {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(116px, .95fr) minmax(220px, 1.4fr);
  grid-template-rows: auto auto;
  gap: clamp(10px, 2vmin, 22px);
  align-items: center;
}

.dpad,
.face {
  display: grid;
  gap: clamp(6px, 1.2vmin, 12px);
}

.dpad {
  justify-self: center;
  grid-template-columns: repeat(3, clamp(38px, 8vmin, 68px));
  grid-template-rows: repeat(2, clamp(38px, 8vmin, 68px));
}

.dpad [data-key='up'] { grid-column: 2; }
.dpad [data-key='left'] { grid-column: 1; grid-row: 2; }
.dpad [data-key='right'] { grid-column: 3; grid-row: 2; }
.dpad [data-key='down'] { grid-column: 2; grid-row: 2; }

.face {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

button {
  min-width: 0;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  min-height: clamp(38px, 8vmin, 68px);
  border: 0;
  border-radius: 999px;
  color: #20140b;
  background: #f1cf62;
  font: inherit;
  font-size: clamp(13px, 2.2vmin, 18px);
  font-weight: 950;
  box-shadow:
    0 clamp(5px, 1.1vmin, 10px) 0 #8b5e22,
    0 clamp(9px, 2vmin, 18px) clamp(8px, 2vmin, 24px) #00000055;
  cursor: pointer;
  touch-action: none;
}

button:active,
button.pressed {
  transform: translateY(clamp(4px, .9vmin, 8px));
  box-shadow:
    0 clamp(1px, .35vmin, 3px) 0 #8b5e22,
    0 clamp(4px, 1vmin, 10px) clamp(6px, 1.5vmin, 18px) #00000055;
}

.speed-control {
  grid-column: 1 / -1;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  display: grid;
  gap: clamp(5px, 1vmin, 10px);
}

.speed-control label {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: #fff3bf;
  font-size: clamp(12px, 2vmin, 16px);
  font-weight: 900;
}

#speed-value {
  color: #9bf2cc;
  font-variant-numeric: tabular-nums;
}

#speed {
  width: 100%;
  accent-color: #9bf2cc;
}

.keys {
  margin: 0;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  color: #e8dcb9;
  font-size: clamp(11px, 1.8vmin, 15px);
  line-height: 1.2;
  text-align: center;
}

@media (max-width: 700px), (max-aspect-ratio: 4 / 5) {
  body {
    min-height: 100dvh;
    display: block;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .shell {
    width: 100%;
    min-height: 100dvh;
    height: auto;
    padding: max(14px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(14px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
    grid-template-rows: auto auto auto auto auto;
    gap: 14px;
    align-content: center;
  }

  .masthead {
    gap: 6px;
  }

  h1 {
    width: 100%;
    max-width: 100%;
    font-size: clamp(28px, 9.5vw, 46px);
    letter-spacing: -.06em;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .github-link {
    font-size: clamp(18px, 6vw, 28px);
  }

  .display-panel {
    width: 100%;
    height: auto;
    padding: 8px;
    border-width: 3px;
    border-radius: 20px;
    box-shadow:
      0 10px 0 #08100f,
      0 18px 34px #00000055,
      inset 0 1px 0 #ffffff18;
  }

  #screen {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    border-radius: 12px;
  }

  .status {
    max-width: 100%;
    font-size: clamp(14px, 4.2vw, 18px);
  }

  .controls {
    grid-template-columns: calc(43% - 5px) calc(57% - 5px);
    gap: 16px 10px;
  }

  .dpad {
    justify-self: start;
    grid-template-columns: repeat(3, clamp(36px, 11vw, 50px));
    grid-template-rows: repeat(2, clamp(36px, 11vw, 50px));
    gap: clamp(6px, 1.8vw, 9px);
  }

  .face {
    justify-self: end;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(8px, 2.5vw, 12px);
  }

  button {
    min-height: clamp(38px, 12vw, 56px);
    font-size: clamp(13px, 4vw, 18px);
  }

  .speed-control {
    margin-top: 2px;
  }

  .speed-control label {
    font-size: clamp(14px, 4vw, 18px);
  }

  .keys {
    font-size: clamp(12px, 3.5vw, 15px);
  }
}