/* Grammar Section Styles */
.grammar-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
  }
  
  .grammar-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
  }
  
  .grammar-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }
  
  .grammar-card {
    display: flex;
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    height: 100%;
    border: 1px solid rgba(0, 0, 0, 0.05);
  }
  
  .grammar-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  }
  
  .grammar-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 20px;
    font-size: 2.5rem;
    min-width: 100px;
  }
  
  .grammar-card-content {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
  }
  
  .grammar-card-content h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 1.4rem;
  }
  
  .grammar-card-content p {
    color: #666;
    flex-grow: 1;
    margin-bottom: 15px;
  }
  
  .grammar-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding-top: 15px;
  }
  
  .grammar-difficulty {
    color: #ffc107;
    font-size: 0.9rem;
  }
  
  .grammar-coming-soon {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 30px;
    font-style: italic;
  }
  
  .grammar-suggestion {
    background-color: rgba(0, 123, 255, 0.05);
    padding: 25px;
    border-radius: 10px;
    max-width: 800px;
    margin: 0 auto;
    border: 1px dashed rgba(0, 123, 255, 0.3);
  }
  
  .grammar-suggestion p {
    color: #555;
    margin-bottom: 15px;
    font-weight: 500;
  }
  
  /* Responsive adjustments */
  @media (max-width: 768px) {
    .grammar-card {
      flex-direction: column;
    }
    
    .grammar-card-icon {
      width: 100%;
      padding: 15px;
      min-height: 100px;
    }
    
    .grammar-title {
      font-size: 2rem;
    }
    
    .grammar-subtitle {
      font-size: 1rem;
    }
  }
  
  /* Animation for the grammar cards */
  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  .col-md-6:nth-child(1) .grammar-card {
    animation: fadeInUp 0.6s ease forwards;
  }
  
  .col-md-6:nth-child(2) .grammar-card {
    animation: fadeInUp 0.8s ease forwards;
  }
  
  /* Topic page styles */
  .grammar-content-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  }
  
  .grammar-example {
    background-color: #f8f9fa;
    border-left: 4px solid var(--primary-color);
    padding: 15px;
    margin: 15px 0;
    border-radius: 0 5px 5px 0;
  }
  
  .grammar-note {
    background-color: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    padding: 15px;
    margin: 20px 0;
    border-radius: 5px;
    position: relative;
  }
  
  .grammar-note::before {
    content: 'Note';
    position: absolute;
    top: -10px;
    left: 10px;
    background-color: white;
    padding: 0 10px;
    color: #ffc107;
    font-weight: 600;
    font-size: 0.9rem;
  }
  
  .grammar-rule {
    background-color: rgba(0, 123, 255, 0.05);
    border: 1px solid rgba(0, 123, 255, 0.2);
    padding: 15px;
    margin: 20px 0;
    border-radius: 5px;
  }
  
  .grammar-practice {
    margin-top: 40px;
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
  }
  
  .grammar-practice h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
    padding-bottom: 10px;
  }
  
  .grammar-practice h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
  }
  
  .grammar-exercise {
    margin-bottom: 20px;
  }
  
  .grammar-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
  }
  
  .grammar-table th, 
  .grammar-table td {
    padding: 12px 15px;
    text-align: left;
    border: 1px solid #e0e0e0;
  }
  
  .grammar-table th {
    background-color: var(--primary-color);
    color: white;
  }
  
  .grammar-table tr:nth-child(even) {
    background-color: #f8f9fa;
  }
  
  .grammar-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    border-top: 1px solid #eee;
    padding-top: 20px;
  }
  
  .grammar-nav-button {
    display: inline-flex;
    align-items: center;
    background: none;
    border: none;
    color: var(--primary-color);
    font-weight: 500;
    padding: 8px 0;
    cursor: pointer;
    transition: color 0.3s;
  }
  
  .grammar-nav-button:hover {
    color: var(--secondary-color);
  }
  
  .grammar-nav-prev i {
    margin-right: 8px;
  }
  
  .grammar-nav-next i {
    margin-left: 8px;
  }

  /* Enhanced navigation styles */
.grammar-navigation {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #eee;
}

.grammar-nav-row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -10px;
}

.grammar-nav-col {
  flex: 1;
  padding: 0 10px;
  margin-bottom: 15px;
}

.grammar-nav-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 10px 15px;
  border-radius: 4px;
  transition: all 0.3s ease;
  text-align: center;
  color: var(--primary-color);
  background-color: transparent;
  border: 1px solid var(--primary-color);
  cursor: pointer;
  font-weight: 500;
}

.grammar-nav-button:hover {
  background-color: var(--primary-color);
  color: white;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.grammar-nav-button i {
  margin-right: 8px;
}

.grammar-nav-button.grammar-nav-next i {
  margin-right: 0;
  margin-left: 8px;
}

.grammar-nav-home {
  color: #28a745;
  border-color: #28a745;
}

.grammar-nav-home:hover {
  background-color: #28a745;
  color: white;
}

.grammar-nav-play {
  color: #17a2b8;
  border-color: #17a2b8;
}

.grammar-nav-play:hover {
  background-color: #17a2b8;
  color: white;
}

.grammar-nav-list {
  color: #6c757d;
  border-color: #6c757d;
}

.grammar-nav-list:hover {
  background-color: #6c757d;
  color: white;
}

/* Responsive adjustments */
@media (max-width: 767px) {
  .grammar-nav-col {
    flex: 0 0 100%;
  }
}

  /* Force enable all inputs in grammar exercises */
  .grammar-exercise input[type="text"],
  .grammar-exercise input[type="radio"],
  .grammar-exercise select {
    pointer-events: auto !important;
    opacity: 1 !important;
    background-color: white !important;
    cursor: text !important;
    -webkit-appearance: auto !important;
    appearance: auto !important;
  }
  
  /* Style for feedback on exercises */
  .feedback {
    font-size: 0.9em;
    margin-top: 5px;
    display: none;
  }
  
  .feedback.text-success {
    color: #28a745;
  }
  
  .feedback.text-danger {
    color: #dc3545;
  }
  
  /* Ensure result message is visible */
  .exercise-results {
    margin-top: 20px;
    padding: 10px;
    border-radius: 5px;
  }