.page-games .predictor-game {
    padding: 32px 0;
  }
  
  .page-games .predictor-game .title {
    text-align: center;
    margin-bottom: 40px;
  }
  
  .page-games #layout {
    display: flex;
    justify-content: center;
  }
  
  .page-games #container {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 32px;
  
    max-width: 1200px;
    width: 100%;
    padding: 0 24px;
  }
  
  .page-games {
    background-color: #f8fafc;
  }
  .page-games #sidebar {
    background: white;
    border: 1px solid var(--border);
    padding: 18px;
  
    display: flex;
    flex-direction: column;
    gap: 12px;

    box-shadow: 
    0 1px 2px rgba(0, 0, 0, 0.04),
    0 4px 12px rgba(0, 0, 0, 0.06);
  }
  
  .page-games #sidebar h2 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
  }
  
  .page-games #reactionList {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  
  .page-games .reaction-item {
    padding: 10px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
  
    background: #f8fafc;
    border: 1px solid transparent;
  }
  
  .page-games .reaction-item:hover {
    background: #eef2ff;
  }
  
  .page-games .reaction-item.active {
    background: #e9f0ff;
    font-weight: 600;
    border-color: #c7d2fe;
  }
    
  .page-games .predict-workspace {
    background: white;
    border: 1px solid var(--border);
    padding: 28px 32px;
  
    display: flex;
    flex-direction: column;
    gap: 32px;

    box-shadow: 
    0 1px 2px rgba(0, 0, 0, 0.04),
    0 4px 12px rgba(0, 0, 0, 0.06);
  }
  
  .page-games #reaction-area {
    display: flex;
    justify-content: center;
  }
  
  .page-games .reaction-row {
    display: flex;
    align-items: center;
    gap: 32px;
    position: relative;
  }
    
  .page-games .predict-card {
    width: 120px;
    height: 120px;
  
    background: white;
    border: 1px solid var(--border);
  
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  
  .page-games .predict-card .formula {
    font-size: 32px;
    font-weight: 800;
  }
  
  .page-games .predict-card .name {
    font-size: 14px;
    color: #555;
  }
  
  .page-games .plus {
    font-size: 36px;
    font-weight: 700;
  }
    
  .page-games .product-card {
    position: absolute;
    left: 50%;
    transform: translateX(-50%) scale(0.9);
    opacity: 0;
    pointer-events: none;
  }
  
  .page-games .animate .reactant-a {
    transform: translateX(80px);
    opacity: 0;
    transition: 1s ease;
  }
  
  .page-games .animate .reactant-b {
    transform: translateX(-80px);
    opacity: 0;
    transition: 1s ease;
  }
  
  .page-games .animate .product-card {
    opacity: 1;
    transform: translateX(-50%) scale(1);
    transition: 1s ease;
  }
  
  .page-games .no-reaction .reactant-a,
  .page-games .no-reaction .reactant-b {
    animation: shake 0.6s ease;
  }
  
  @keyframes shake {
    0% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
    100% { transform: translateX(0); }
  }
  
  .page-games #quiz-area {
    display: flex;
    justify-content: center;
  }
  
  .page-games .predict-quiz {
    display: none;
  
    background: #f8fafc;
    border: 1px solid var(--border);
    padding: 20px;
    max-width: 520px;
    width: 100%;
  
    text-align: center;
  }
  
  .page-games .predict-quiz.active {
    display: block;
  }
  
  .page-games .predict-quiz h3 {
    margin-bottom: 16px;
  }
  
  .page-games .predict-answer {
    padding: 10px 18px;
    margin: 6px;
    font-weight: 600;
    border: 1px solid var(--border);
    background: white;
    cursor: pointer;
  }
  
  .page-games .predict-answer:hover {
    background: #eef2ff;
  }
  
  .page-games .predict-answer.auto-selected {
    background: #ecf8f1;
    border-color: #3bb273;
  }
  
  .page-games #submitPrediction {
    margin-top: 16px;
    padding: 12px 20px;
    font-weight: 700;
    border: 2px solid #111827;
    background: #f3f4f6;
    cursor: pointer;
  }
  
  .page-games #submitPrediction:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }

  .page-games #explanation,
  .page-games #balanced,
  .page-games #student-results {
    text-align: center;
    font-size: 15px;
    margin-top: 12px;
    opacity: 100%;
  }
  
  .page-games .show {
    opacity: 1;
  }
  
  .page-games #restartBtn {
    margin: 24px auto 0;
    padding: 12px 24px;
    font-weight: 700;
    border: 2px solid #111827;
    background: #f3f4f6;
    cursor: pointer;
  }
  
  @media (max-width: 900px) {
    .page-games #container {
      grid-template-columns: 1fr;
    }
  
    .page-games #sidebar {
      order: 2;
    }
  }