.game-main {
  max-width: 60rem;
  margin: 0 auto;
  padding: 0 1.25rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.9rem 1.25rem;
  margin-bottom: 0.75rem;
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;
}

.hud-item span {
  font-size: 1.1rem;
  color: var(--text);
  font-weight: 700;
}

.stage {
  position: relative;
  width: 100%;
  max-width: 300px;
  display: flex;
  justify-content: center;
  touch-action: none;
}

.board-wrap {
  position: relative;
  width: 100%;
}

#board {
  width: 100%;
  display: block;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  user-select: none;
  -webkit-user-select: none;
  background: var(--panel);
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 12, 24, 0.9);
  backdrop-filter: blur(2px);
  border-radius: 10px;
}

.overlay.hidden {
  display: none;
}

.overlay-panel {
  text-align: center;
  padding: 1.25rem;
  max-width: 300px;
}

.overlay-panel h2 {
  margin: 0 0 0.75rem;
}

.overlay-panel p {
  color: var(--muted);
  line-height: 1.6;
  margin: 0 0 1.25rem;
  font-size: 0.82rem;
}

.overlay-panel button {
  background: var(--accent);
  color: #1a1200;
  border: none;
  padding: 0.7rem 1.75rem;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
}

.overlay-panel button:active {
  transform: scale(0.97);
}

.controls {
  width: 100%;
  max-width: 300px;
  margin-top: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.action-buttons {
  display: flex;
  gap: 0.4rem;
}

.action-buttons button {
  flex: 1;
  background: var(--panel);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 0.55rem 0.25rem;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
}

.action-buttons button:active {
  transform: scale(0.96);
}

.hint {
  color: var(--muted);
  font-size: 0.8rem;
  margin: 0.75rem 0 0;
  text-align: center;
}

.how-to-play {
  max-width: 420px;
  width: 100%;
  margin-top: 1rem;
}

.how-to-play h2 {
  font-size: 1.1rem;
}

.how-to-play ul {
  color: var(--muted);
  line-height: 1.7;
  padding-left: 1.25rem;
  font-size: 0.9rem;
}