#game-container {
    margin-top: 20px;
    text-align: center;
  }
  
  #number-display {
    font-size: 4rem;
    font-weight: bold;
    margin-bottom: 20px;
    color: #444;
  }
  
  .game-button {
    font-size: 1.8rem;
    padding: 10px 30px;
    margin: 0 15px;
    cursor: pointer;
    background-color: #f0f8ff;
    border: 2px solid #ccc;
    border-radius: 10px;
    transition: background-color 0.3s;
  }
  
  .game-button:hover {
    background-color: #d0f0ff;
  }
  
  #feedback-message {
    font-size: 1.6rem;
    font-weight: bold;
    margin-top: 15px;
    color: #333;
    text-align: center;
    min-height: 30px;
    transition: all 0.3s ease;
  }
  
  #feedback-message.correct {
    color: green;
  }
  
  #feedback-message.wrong {
    color: red;
  }
  
  .explanation {
    margin-top: 30px;
    font-size: 1.2rem;
    background: #f8f8f8;
    padding: 15px;
    border-radius: 10px;
    text-align: left;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }
  
  .explanation h3 {
    margin-bottom: 10px;
  }
  .back-button {
    position: absolute;
    top: 25px;
    left: 25px;
    background-color: var(--primary-blue); 
    color: var(--text-light);
    padding: 10px 20px; 
    border: none;
    border-radius: 10px; 
    font-size: 1em; 
    font-weight: 600; 
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    z-index: 10;
    box-shadow: 0 3px 6px var(--shadow-light);
}

.back-button:hover {
    background-color: #5c8ae6; 
    transform: translateY(-3px);
    box-shadow: 0 5px 10px var(--shadow-medium);
}

.back-button:active {
    transform: translateY(0);
    box-shadow: 0 1px 3px var(--shadow-light);
}

/* Mobile-specific adjustments for very small screens */
@media (max-width: 480px) {
    .navigation-buttons button {
        font-size: 0.9em;
        padding: 10px 15px;
    }
    .back-button {
        padding: 6px 12px;
        font-size: 0.8em;
        top: 15px; 
        left: 15px; 
        border-radius: 8px;
    }
    #current-fruit-name {
        font-size: clamp(2em, 6vw, 4em); 
    }
    .container {
        padding: 40px 20px 20px 20px; 
    }
}