.demo-container {
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    background: #f8f9fa;
  }
  
  .code-example {
    background: #2d3748;
    color: #e2e8f0;
    padding: 15px;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    overflow-x: auto;
    margin: 15px 0;
  }
  
  .smacss-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 20px 0;
  }
  
  .category-card {
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  }
  
  .category-title {
    color: #2563eb;
    font-weight: bold;
    margin-bottom: 10px;
  }
  
  /* Base styles example */
  .base-example {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
  }
  
  /* Layout styles example */
  .l-header {
    background: #2563eb;
    color: white;
    padding: 1rem;
    text-align: center;
  }
  
  .l-main {
    display: flex;
    min-height: 300px;
  }
  
  .l-sidebar {
    width: 250px;
    background: #f3f4f6;
    padding: 1rem;
  }
  
  .l-content {
    flex: 1;
    padding: 1rem;
  }
  
  /* Module styles example */
  .btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
  }
  
  .btn-primary {
    background: #2563eb;
    color: white;
  }
  
  .btn-primary:hover {
    background: #1d4ed8;
  }
  
  .btn-secondary {
    background: #6b7280;
    color: white;
  }
  
  .btn-secondary:hover {
    background: #4b5563;
  }
  
  .card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  }
  
  .card-header {
    font-size: 1.25em;
    font-weight: bold;
    margin-bottom: 10px;
    color: #1f2937;
  }
  
  .card-body {
    color: #6b7280;
  }
  
  /* State styles example */
  .is-hidden {
    display: none;
  }
  
  .is-active {
    background: #fef3c7;
    border-color: #f59e0b;
  }
  
  .is-loading {
    opacity: 0.6;
    pointer-events: none;
  }
  
  /* Theme styles example */
  .theme-dark {
    background: #1f2937;
    color: #f9fafb;
  }
  
  .theme-dark .card {
    background: #374151;
    border-color: #4b5563;
    color: #f9fafb;
  }
  
  .interactive-demo {
    border: 2px dashed #2563eb;
    padding: 20px;
    margin: 20px 0;
    background: #eff6ff;
  }
  
  .toggle-btn {
    background: #10b981;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 10px;
  }
  
  .file-structure {
    background: #1e293b;
    color: #e2e8f0;
    padding: 20px;
    border-radius: 8px;
    font-family: monospace;
    white-space: pre-line;
  }