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

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0d1117;
  color: #e6edf3;
  font-family: system-ui, -apple-system, sans-serif;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

.wrap {
  width: min(100vw, 360px);
  padding: 12px;
  text-align: center;
}

.hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  font-size: 14px;
}

.hud__title {
  font-weight: 700;
  letter-spacing: 0.06em;
}

.hud__score strong {
  color: #d29922;
}

#game {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 2px solid #30363d;
  background: #161b22;
}

.hint {
  margin-top: 10px;
  font-size: 12px;
  color: #8b949e;
  min-height: 1.2em;
}

.controls {
  display: flex;
  justify-content: center;
  margin-top: 14px;
}

.ctrl__btn {
  width: 64px;
  height: 52px;
  border: 1px solid #30363d;
  border-radius: 10px;
  background: #21262d;
  color: #e6edf3;
  font-size: 18px;
  cursor: pointer;
}

.ctrl__btn--wide {
  width: 160px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.ctrl__btn:active {
  background: #30363d;
}