:root {
      --primary: #4a6fa5;
      --primary-dark: #3a5a8a;
      --secondary: #6b4d8b;
      --accent: #4cc9f0;
      --dark: #2b2d42;
      --light: #f8f9fa;
      --gray: #6c757d;
      --success: #4caf50;
      --warning: #ff9800;
      --error: #f44336;
      --border-radius: 12px;
      --shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
      --transition: all 0.3s ease;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }

    .main-container {
      background: linear-gradient(135deg, #f5f7fa 0%, #e4e7f1 100%);
      color: var(--dark);
      line-height: 1.6;
      min-height: 100vh;
      padding: 2rem;
    }

    .container {
      width: 95%;
      margin: 0 auto;
      background: white;
      border-radius: var(--border-radius);
      box-shadow: var(--shadow);
      padding: 2rem;
    }

    .header-title {
      text-align: center;
      margin-bottom: 2rem;
    }

    h1 {
      font-size: 2.5rem;
      margin-bottom: 1rem;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .intro {
      max-width: 700px;
      margin: 0 auto 2rem;
      color: var(--gray);
      font-size: 1.1rem;
    }

    .upload-section {
      background: var(--light);
      border-radius: var(--border-radius);
      padding: 2rem;
      margin-bottom: 2rem;
      text-align: center;
      border: 2px dashed #ccc;
      transition: var(--transition);
    }

    .upload-section:hover {
      border-color: var(--primary);
      background: rgba(74, 111, 165, 0.05);
    }

    .file-input-wrapper {
      position: relative;
      display: inline-block;
      margin-bottom: 1rem;
    }

    .file-input-label {
      display: inline-block;
      padding: 1rem 2rem;
      background: var(--primary);
      color: white;
      border-radius: var(--border-radius);
      cursor: pointer;
      transition: var(--transition);
      font-weight: 600;
    }

    .file-input-label:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
    }

    .file-input {
      position: absolute;
      left: 0;
      top: 0;
      opacity: 0;
      width: 100%;
      height: 100%;
      cursor: pointer;
    }

    .controls {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 2rem;
      background: var(--light);
      padding: 1.5rem;
      border-radius: var(--border-radius);
    }

    .filter-select {
      flex: 1;
      min-width: 250px;
      padding: 0.8rem;
      border: 1px solid #ddd;
      border-radius: var(--border-radius);
      font-size: 1rem;
      background: white;
      transition: var(--transition);
    }

    .filter-select:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.2);
    }

    .canvas-container {
      position: relative;
      margin-bottom: 2rem;
      border-radius: var(--border-radius);
      overflow: hidden;
      box-shadow: var(--shadow);
    }

    canvas {
      display: block;
      max-width: 100%;
      margin: 0 auto;
      background: white;
    }

    .loading-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0, 0, 0, 0.7);
      display: flex;
      justify-content: center;
      align-items: center;
      color: white;
      font-size: 1.5rem;
      opacity: 0;
      transition: var(--transition);
      pointer-events: none;
    }

    .loading-overlay.active {
      opacity: 1;
    }

    .info-section {
      background: #e7f4ff;
      padding: 1.5rem;
      border-radius: var(--border-radius);
      margin: 2rem 0;
      border-left: 4px solid var(--primary);
    }

    .info-section h2 {
      margin-bottom: 1rem;
      color: var(--primary);
    }

    .colorblind-types {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 1.5rem;
      margin: 2rem 0;
    }

    .type-card {
      background: white;
      border-radius: var(--border-radius);
      padding: 1.5rem;
      box-shadow: var(--shadow);
      transition: var(--transition);
    }

    .type-card:hover {
      transform: translateY(-5px);
    }

    .type-card h3 {
      color: var(--primary);
      margin-bottom: 0.5rem;
      display: flex;
      align-items: center;
    }

    .type-card h3 i {
      margin-right: 0.5rem;
    }

    

    .notification {
      position: fixed;
      top: 20px;
      right: 20px;
      padding: 15px 25px;
      background: var(--success);
      color: white;
      border-radius: var(--border-radius);
      box-shadow: var(--shadow);
      transform: translateX(150%);
      transition: var(--transition);
      z-index: 1000;
    }

    .notification.show {
      transform: translateX(0);
    }

    @media (max-width: 768px) {
      .main-container {
        padding: 1rem;
      }
      
      .container {
        padding: 1rem;
      }
      
      h1 {
        font-size: 2rem;
      }
      
      .controls {
        flex-direction: column;
        align-items: stretch;
      }
      
      .filter-select {
        width: 100%;
      }
    }


 /* ===== ARTICLE SPECIFIC STYLES - NO BODY STYLES ===== */
 #colorblind-guide-article {
      width: 95%;
      margin: 0 auto;
      padding: 2rem 1.5rem 3rem 1.5rem;
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    }

    /* Hero Section */
    .colorblind-guide-hero {
      text-align: center;
      margin-bottom: 2.5rem;
      padding: 2rem 1.5rem;
      background: linear-gradient(135deg, #4a6fa5 0%, #6b4d8b 100%);
      border-radius: 32px;
      box-shadow: 0 12px 30px rgba(74, 111, 165, 0.3);
    }

    .colorblind-guide-hero h2 {
      font-size: 2.6rem;
      font-weight: 800;
      color: white;
      margin-bottom: 1rem;
      letter-spacing: -0.02em;
      font-family: 'Playfair Display', serif;
    }

    .colorblind-guide-hero .colorblind-hero-sub {
      font-size: 1.2rem;
      color: rgba(255, 255, 255, 0.9);
      max-width: 720px;
      margin: 0 auto;
      line-height: 1.5;
    }

    .colorblind-guide-meta {
      display: flex;
      justify-content: center;
      gap: 2rem;
      color: rgba(255, 255, 255, 0.8);
      font-weight: 500;
      margin-top: 1.2rem;
      flex-wrap: wrap;
    }

    .colorblind-guide-meta span i {
      margin-right: 0.5rem;
    }

    /* Main Content */
    .colorblind-main-content {
      background: white;
      border-radius: 28px;
      padding: 2rem 2rem 2.5rem 2rem;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
      border: 1px solid rgba(74, 111, 165, 0.15);
    }

    .colorblind-main-content h2 {
      font-size: 1.8rem;
      font-weight: 700;
      margin-top: 2rem;
      margin-bottom: 1rem;
      color: #4a6fa5;
      border-left: 5px solid #6b4d8b;
      padding-left: 1rem;
      font-family: 'Playfair Display', serif;
    }

    .colorblind-main-content h2:first-of-type {
      margin-top: 0;
    }

    .colorblind-main-content h3 {
      font-size: 1.35rem;
      font-weight: 600;
      margin: 1.5rem 0 0.75rem 0;
      color: #6b4d8b;
    }

    .colorblind-main-content p {
      font-size: 1.05rem;
      color: #2d3748;
      margin-bottom: 1.2rem;
      line-height: 1.6;
    }

    .colorblind-main-content ul, .colorblind-main-content ol {
      margin: 1rem 0 1.2rem 1.8rem;
      color: #2d3748;
      line-height: 1.6;
    }

    .colorblind-main-content li {
      margin-bottom: 0.5rem;
    }

    .colorblind-highlight-box {
      background: linear-gradient(135deg, rgba(74, 111, 165, 0.08), rgba(107, 77, 139, 0.05));
      border-left: 6px solid #6b4d8b;
      padding: 1.25rem 1.5rem;
      border-radius: 20px;
      margin: 1.75rem 0;
    }

    .colorblind-pro-tip {
      background: rgba(107, 77, 139, 0.1);
      border-radius: 20px;
      padding: 1.2rem 1.5rem;
      margin: 1.5rem 0;
      display: flex;
      gap: 1rem;
      align-items: flex-start;
      border: 1px solid rgba(74, 111, 165, 0.3);
    }

    .colorblind-pro-tip i {
      font-size: 1.8rem;
      color: #4a6fa5;
    }

    .colorblind-stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 1.2rem;
      margin: 2rem 0;
    }

    .colorblind-stat-card {
      background: #f5f7fa;
      border-radius: 20px;
      padding: 1.2rem;
      text-align: center;
      transition: all 0.2s;
      border: 1px solid rgba(74, 111, 165, 0.2);
    }

    .colorblind-stat-card .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: #4a6fa5;
      margin-bottom: 0.25rem;
    }

    .colorblind-quote-block {
      background: #f5f7fa;
      padding: 1.5rem;
      border-radius: 24px;
      text-align: center;
      font-style: italic;
      margin: 1.5rem 0;
      border: 1px solid rgba(74, 111, 165, 0.2);
    }

    .colorblind-quote-block i {
      font-size: 2rem;
      color: #6b4d8b;
      margin-bottom: 0.5rem;
      display: inline-block;
    }

    .colorblind-table-wrapper {
      overflow-x: auto;
      margin: 1.5rem 0;
    }

    .colorblind-types-table {
      width: 100%;
      border-collapse: collapse;
      background: #f5f7fa;
      border-radius: 16px;
      overflow: hidden;
    }

    .colorblind-types-table th, .colorblind-types-table td {
      padding: 12px 16px;
      text-align: left;
      border-bottom: 1px solid rgba(74, 111, 165, 0.2);
    }

    .colorblind-types-table th {
      background: rgba(74, 111, 165, 0.1);
      font-weight: 600;
      color: #4a6fa5;
    }

    .colorblind-types-table tr:hover {
      background: rgba(107, 77, 139, 0.05);
    }

    .colorblind-tips-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.2rem;
      margin: 1.5rem 0;
    }

    .colorblind-tip-card {
      background: #f5f7fa;
      border-radius: 16px;
      padding: 1.2rem;
      border: 1px solid rgba(74, 111, 165, 0.2);
      transition: all 0.2s;
    }

    .colorblind-tip-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 20px rgba(74, 111, 165, 0.1);
    }

    .colorblind-tip-title {
      font-weight: 700;
      color: #4a6fa5;
      margin-bottom: 0.5rem;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .colorblind-footer-note {
      margin-top: 2.5rem;
      text-align: center;
      font-size: 0.85rem;
      color: #718096;
      border-top: 1px solid #e2e8f0;
      padding-top: 2rem;
    }

    @media (max-width: 768px) {
      .colorblind-guide-hero h2 {
        font-size: 2rem;
      }
      .colorblind-main-content {
        padding: 1.5rem;
      }
      #colorblind-guide-article {
        padding: 1rem;
      }
    }