:root {
  --bg: #05060d;
  --panel: #0a0c18;
  --electric: #214dff;
  --electric-glow: #4ec2ff;
  --pellet: #ffd6d1;
  --power: #ffb4d7;
  --ui: #f5f5f5;
  --accent: #ffd84d;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top, rgba(39, 83, 255, 0.14), transparent 32%),
    linear-gradient(180deg, #090b12 0%, #020308 100%);
  color: var(--ui);
  font-family: "Press Start 2P", monospace;
}

body {
  display: grid;
  place-items: center;
  padding: 24px;
  overscroll-behavior: none;
}

.shell {
  width: min(100%, 860px);
}

.hud,
.controls {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  font-size: 12px;
}

.hud {
  margin-bottom: 18px;
}

.hud > div {
  display: grid;
  gap: 8px;
}

.label {
  color: #ff5f63;
}

.board-wrap {
  position: relative;
  border-radius: 18px;
  padding: 54px 16px 16px;
  background:
    linear-gradient(180deg, rgba(12, 15, 27, 0.95), rgba(3, 4, 10, 0.96));
  box-shadow:
    0 24px 80px rgba(0, 0, 0, 0.55),
    inset 0 0 0 1px rgba(255, 255, 255, 0.05);
  touch-action: none;
  overscroll-behavior: contain;
}

.board-title {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--accent);
  font-size: 18px;
  text-shadow: 0 0 12px rgba(255, 216, 77, 0.35);
  letter-spacing: 0.08em;
}

.macron-a {
  position: relative;
  display: inline-block;
}

.macron-a::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -0.22em;
  width: calc(0.58em + 2px);
  height: 0.12em;
  background: currentColor;
  transform: translateX(calc(-58% - 1px));
  box-shadow: 0 0 8px rgba(255, 216, 77, 0.28);
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  background: #000;
  image-rendering: auto;
  border-radius: 12px;
  touch-action: none;
}

.overlay {
  position: absolute;
  inset: 16px;
  display: grid;
  place-items: center;
  text-align: center;
  pointer-events: none;
  color: var(--accent);
  font-size: 18px;
  line-height: 1.8;
  text-shadow: 0 0 12px rgba(255, 216, 77, 0.35);
  white-space: pre-line;
}

.overlay:not(.hidden) {
  background: rgba(2, 4, 10, 0.78);
  border: 2px solid rgba(255, 216, 77, 0.45);
  border-radius: 18px;
  box-shadow:
    0 18px 40px rgba(0, 0, 0, 0.45),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.overlay.hidden {
  opacity: 0;
}

.controls {
  margin-top: 18px;
  flex-wrap: wrap;
  color: #d2d8ff;
  line-height: 1.8;
}

.desktop-copy,
.mobile-copy {
  display: none;
}

body.desktop-device .desktop-copy {
  display: block;
}

body.touch-device .mobile-copy {
  display: block;
}

kbd {
  font: inherit;
  color: var(--accent);
}

@media (max-width: 720px) {
  body {
    padding: 12px;
  }

  .hud,
  .controls {
    font-size: 10px;
  }

  .overlay {
    font-size: 14px;
  }

  .board-title {
    top: 18px;
    font-size: 14px;
  }

  .macron-a::before {
    top: -0.16em;
    height: 0.14em;
  }
}