* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #111;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  font-family: 'Courier New', monospace;
  overflow: hidden;
  overscroll-behavior: none;
}

#game-container {
  position: relative;
  width: 600px;
  height: 700px;
  transform-origin: top center;
  flex-shrink: 0;
}

#game-canvas {
  display: block;
  border: 3px solid #fff;
}

#hud {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding: 8px 12px;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
  color: #fff;
  font-size: 14px;
  font-weight: bold;
  text-shadow: 1px 1px 3px #000, -1px -1px 3px #000;
  z-index: 10;
}

#hud-left {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

#hud-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

#score-display {
  font-size: 18px;
  color: #ffd700;
}

#best-display {
  font-size: 12px;
  color: #aaa;
  text-align: right;
}

/* ── Virtual joystick ──────────────────────────────────────────────────────── */
#touch-controls {
  display: none;
  position: fixed;
  bottom: max(24px, env(safe-area-inset-bottom, 24px));
  left:  50%;
  transform: translateX(-50%);
  width:  120px;
  height: 120px;
  z-index: 200;
  touch-action: none;
}
@media (pointer: coarse) { #touch-controls { display: block; } }

#joy-base {
  width:  100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.28);
  position: relative;
}

#joy-thumb {
  position: absolute;
  top: 50%;
  left: 50%;
  width:  46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.6);
  transform: translate(-50%, -50%);
  pointer-events: none;
  transition: background 0.1s;
}

/* ── Back link ─────────────────────────────────────────────────────────────── */
#back-link {
  position: fixed;
  bottom: max(20px, env(safe-area-inset-bottom, 20px));
  right:  max(16px, env(safe-area-inset-right,  16px));
  color: #bbb;
  background: rgba(0,0,0,0.55);
  padding: 8px 12px;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
  z-index: 200;
}
#back-link:hover, #back-link:active { color: #fff; }