:root {
  color-scheme: dark;
  font-family: "Courier New", Courier, monospace;
  background: #050505;
  color: #d8d8cc;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  padding: 32px 16px;
  background: #050505;
}

main { width: min(920px, 100%); margin: 0 auto; }

header { margin-bottom: 20px; }
h1 { margin: 0; color: #e4482f; font-size: clamp(2.5rem, 8vw, 5rem); line-height: .9; letter-spacing: -.08em; }
header p { margin: 10px 0 0; color: #8e8e84; }

.game-shell {
  position: relative;
  display: grid;
  width: 100%;
  aspect-ratio: 4 / 3;
  place-items: center;
  overflow: hidden;
  border: 2px solid #8e8e84;
  outline: none;
  background: #000;
  cursor: crosshair;
}

.game-shell:focus-within { border-color: #e4482f; }

canvas {
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  outline: none;
  image-rendering: pixelated;
}

.touch-controller,
.rotate-notice {
  display: none;
}

.touch-controller {
  position: absolute;
  inset: auto 0 0;
  z-index: 3;
  align-items: end;
  justify-content: space-between;
  padding:
    12px
    max(12px, env(safe-area-inset-right))
    max(12px, env(safe-area-inset-bottom))
    max(12px, env(safe-area-inset-left));
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

.touch-dpad {
  display: grid;
  grid-template: repeat(2, var(--touch-key-size)) / repeat(3, var(--touch-key-size));
  gap: 3px;
}

.touch-up { grid-area: 1 / 2; }
.touch-left { grid-area: 2 / 1; }
.touch-down { grid-area: 2 / 2; }
.touch-right { grid-area: 2 / 3; }

.touch-actions {
  display: grid;
  grid-template-columns: repeat(2, var(--touch-key-size));
  grid-template-rows: var(--touch-key-size) var(--touch-key-size);
  gap: 5px;
  align-items: end;
}

.touch-key {
  min-width: 0;
  padding: 0;
  border: 2px solid rgba(216, 216, 204, .78);
  border-radius: 0;
  color: #fff;
  background: rgba(5, 5, 5, .62);
  font: 700 clamp(.55rem, 2.4vw, .72rem)/1 "Courier New", Courier, monospace;
  letter-spacing: -.04em;
  touch-action: none;
  pointer-events: auto;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

.touch-fire {
  grid-area: 1 / 1 / 3 / 2;
  width: calc(var(--touch-key-size) * 1.18);
  height: calc(var(--touch-key-size) * 1.45);
  align-self: end;
  border-color: rgba(228, 72, 47, .9);
}

.touch-use { grid-area: 1 / 2; }
.touch-run { grid-area: 2 / 2; }

.touch-key.is-pressed {
  color: #050505;
  background: rgba(216, 216, 204, .9);
  transform: translateY(1px);
}

.touch-fire.is-pressed {
  background: rgba(228, 72, 47, .92);
}

.status {
  position: absolute;
  inset: auto 16px 16px;
  padding: 8px 10px;
  color: #e4d9a7;
  background: rgba(0, 0, 0, .88);
  text-align: center;
  pointer-events: none;
}

.status.error { color: #ff654f; }

#start {
  width: 100%;
  padding: 14px;
  border: 0;
  color: #050505;
  background: #d8d8cc;
  font: bold 1rem/1 "Courier New", Courier, monospace;
  cursor: pointer;
}

#start:hover:not(:disabled), #start:focus-visible { background: #e4482f; }
#start:disabled { color: #777; background: #222; cursor: wait; }

.controls { margin-top: 34px; }
h2 { margin: 0 0 14px; color: #e4482f; font-size: 1rem; letter-spacing: .12em; }
dl { display: grid; grid-template-columns: minmax(150px, 1fr) 1fr; max-width: 430px; margin: 0; gap: 7px 24px; }
dt, dd { margin: 0; }
dt { color: #fff; }
dd { color: #8e8e84; }
footer { margin-top: 34px; font-size: .75rem; }
a { color: #8e8e84; }
a:hover { color: #e4482f; }

@media (max-width: 520px) {
  body { padding: 20px 10px; }
  dl { grid-template-columns: 1fr auto; gap: 7px 12px; }
  .status { inset: auto 8px 8px; font-size: .78rem; }
}

@media (hover: none), (pointer: coarse), (max-width: 768px) {
  .game-shell {
    --touch-key-size: clamp(42px, 11vw, 62px);
    touch-action: none;
    cursor: default;
  }

  .touch-controller {
    display: flex;
  }
}

@media (hover: none) and (orientation: portrait),
       (pointer: coarse) and (orientation: portrait),
       (max-width: 768px) and (orientation: portrait) {
  .rotate-notice {
    display: block;
    margin: 10px 0 0;
    color: #e4d9a7;
    font-size: .7rem;
    line-height: 1.35;
    text-align: center;
    letter-spacing: .08em;
  }
}

@media (hover: none) and (orientation: landscape) and (max-height: 560px),
       (pointer: coarse) and (orientation: landscape) and (max-height: 560px),
       (max-width: 768px) and (orientation: landscape) and (max-height: 560px) {
  body {
    min-height: 100vh;
    min-height: 100dvh;
    padding:
      max(6px, env(safe-area-inset-top))
      max(8px, env(safe-area-inset-right))
      max(6px, env(safe-area-inset-bottom))
      max(8px, env(safe-area-inset-left));
  }

  main {
    width: min(100%, calc(133.333vh - 104px));
    width: min(100%, calc(133.333dvh - 104px));
  }

  header {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 6px;
  }

  h1 { font-size: 2rem; }
  header p { margin: 0; font-size: .7rem; }
  #start { padding: 9px; font-size: .75rem; }
  .controls, footer { display: none; }
  .status { inset: 8px 8px auto; font-size: .65rem; }
}