#puzzle-game-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  min-height: 400px;
  margin: 40px auto !important;
  background: transparent;
  border: var(--border);
  border-radius: 0;
  overflow: hidden;
  box-shadow: none;
}

#puzzle-canvas {
  display: block;
  width: 100%;
  height: auto;
  cursor: pointer;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
  background: var(--background-color);
}

.game-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin-top: 14px;
  padding: 0 8px;
}

.control-line {
  text-align: center;
  color: var(--text-color);
  font-size: 12.5px;
}

.control-heading-line {
  font-family: "Hack", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.78;
}

.control-instructions {
  line-height: 1.35;
}

.control-instructions kbd {
  display: inline-flex;
  align-items: center;
  padding: 2px 4px;
  background: transparent;
  border: var(--border);
  border-radius: 0;
  color: var(--text-color);
  font-weight: normal;
  font-size: 12.5px;
}

.control-instructions kbd:hover {
  background: var(--base-color);
  color: var(--background-color);
}

@media (max-width: 768px) {
  #puzzle-game-container {
    margin: 20px 10px;
    border-left: var(--border);
    border-right: var(--border);
  }

  .game-controls {
    gap: 3px;
    margin-top: 12px;
  }

  .control-instructions kbd {
    font-size: 11px;
    padding: 1px 3px;
  }
}

@media (hover: hover) {
  #puzzle-canvas:hover {
    filter: brightness(0.98);
  }
}

.puzzle-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-color);
  font-size: 12.5px;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.7;
  }
  50% {
    opacity: 1;
  }
}