:root {
  color-scheme: dark;
  background: #000;
  font-family: system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #000;
}

body { min-height: 100dvh; }

#game {
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #000;
}

#stage {
  position: relative;
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  overflow: hidden;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
  image-rendering: pixelated;
  touch-action: none;
}

#hud {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

#menu {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(100vw, 133.333333dvh);
  height: min(100dvh, 75vw);
  transform: translate(-50%, -50%);
  display: block;
  background: transparent;
  text-shadow: none;
  pointer-events: none;
}

#menu[hidden] { display: none; }

#menu button {
  position: absolute;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: transparent;
  font-size: 1px;
  text-shadow: none;
  touch-action: manipulation;
  pointer-events: auto;
}

#menu button:hover { background: transparent; }
#menu button:focus-visible { outline: 1px dashed #ffee66; outline-offset: 1px; }

#touch-controls { display: none; }

@media (pointer: coarse), (max-width: 900px) {
  #touch-controls {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    justify-content: space-between;
    align-items: end;
    padding: 0 max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
    pointer-events: none;
    user-select: none;
    -webkit-user-select: none;
  }
  #move-pad {
    position: relative;
    width: clamp(104px, 27vw, 150px);
    height: clamp(104px, 27vw, 150px);
    flex: 0 0 auto;
    border: 2px solid #ffffff70;
    border-radius: 50%;
    background: #07100ca8;
    box-shadow: inset 0 0 0 1px #0008, 0 2px 12px #0007;
    touch-action: none;
    pointer-events: auto;
  }
  .pad-center {
    position: absolute;
    width: 42%; height: 42%;
    left: 29%; top: 29%;
    border: 2px solid #fff9;
    border-radius: 50%;
    background: #c2dcad9c;
    transform: translate(var(--stick-x, 0%), var(--stick-y, 0%));
    pointer-events: none;
  }
  .pad-label { position: absolute; color: #fff9; font: 700 13px/1 system-ui; pointer-events: none; }
  .pad-up { top: 9px; left: 50%; transform: translateX(-50%); }
  .pad-down { bottom: 9px; left: 50%; transform: translateX(-50%); }
  .pad-left { left: 9px; top: 50%; transform: translateY(-50%); }
  .pad-right { right: 9px; top: 50%; transform: translateY(-50%); }
  .action-pad { display: flex; align-items: end; gap: clamp(10px, 3vw, 18px); pointer-events: none; }
  .action-pad button {
    width: clamp(68px, 19vw, 96px);
    height: clamp(68px, 19vw, 96px);
    padding: 0;
    border: 2px solid #ffffffaa;
    border-radius: 50%;
    color: #fff;
    background: #243b27c9;
    box-shadow: inset 0 -5px 0 #0005, 0 2px 12px #0007;
    font: 800 clamp(12px, 3.5vw, 16px)/1 system-ui;
    letter-spacing: .04em;
    text-shadow: 0 1px 2px #000;
    touch-action: none;
    pointer-events: auto;
    -webkit-tap-highlight-color: transparent;
  }
  #touch-jump { width: clamp(58px, 16vw, 82px); height: clamp(58px, 16vw, 82px); background: #28466bc9; }
  .action-pad button:active { transform: scale(.94); filter: brightness(1.25); }
  #menu { z-index: 4; }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

#game:fullscreen {
  width: 100vw;
  height: 100vh;
  height: 100dvh;
}

#game:fullscreen #stage {
  width: 100%;
  height: 100%;
}

#screen {
  width: min(100vw, 133.333333dvh);
  height: min(100dvh, 75vw);
}