:root {
      --primary: #4361ee;
      --secondary: #3f37c9;
      --accent: #4895ef;
      --dark: #1b263b;
      --light: #f8f9fa;
      --success: #4cc9f0;
      --danger: #f72585;
      --warning: #f8961e;
      --info: #560bad;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Poppins', sans-serif;
      background-color: #f5f7fa;
      color: #333;
      line-height: 1.6;
    }

    /* Header & Navigation */
    header {
      background-color: white;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
      position: sticky;
      top: 0;
      z-index: 100;
    }

    nav {
      max-width: 1200px;
      margin: 0 auto;
      padding: 1rem 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .logo {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--primary);
      text-decoration: none;
      display: flex;
      align-items: center;
    }

    .logo i {
      margin-right: 0.5rem;
      font-size: 2rem;
    }

    .nav-links {
      display: flex;
      gap: 2rem;
    }

    .nav-links a {
      text-decoration: none;
      color: var(--dark);
      font-weight: 500;
      transition: color 0.3s;
    }

    .nav-links a:hover {
      color: var(--primary);
    }

    .cta-button {
      background-color: var(--primary);
      color: white;
      padding: 0.6rem 1.2rem;
      border-radius: 50px;
      font-weight: 600;
      transition: all 0.3s;
    }

    .cta-button:hover {
      background-color: var(--secondary);
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
    }

    /* Hero Section */
    .hero {
      background: linear-gradient(135deg, #4361ee 0%, #3a0ca3 100%);
      color: white;
      padding: 5rem 2rem;
      text-align: center;
    }

    .hero-content {
      max-width: 800px;
      margin: 0 auto;
    }

    .hero h1 {
      font-size: 3rem;
      margin-bottom: 1rem;
      line-height: 1.2;
    }

    .hero p {
      font-size: 1.2rem;
      margin-bottom: 2rem;
      opacity: 0.9;
    }

    .hero-buttons {
      display: flex;
      justify-content: center;
      gap: 1rem;
      margin-top: 2rem;
    }

    .btn {
      padding: 0.8rem 1.8rem;
      border-radius: 50px;
      font-weight: 600;
      text-decoration: none;
      transition: all 0.3s;
    }

    .btn-primary {
      background-color: white;
      color: var(--primary);
    }

    .btn-primary:hover {
      background-color: #f0f0f0;
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    .btn-secondary {
      background-color: transparent;
      color: white;
      border: 2px solid white;
    }

    .btn-secondary:hover {
      background-color: rgba(255, 255, 255, 0.1);
      transform: translateY(-2px);
    }

    /* Features Section */
    .features {
      padding: 5rem 2rem;
      max-width: 1200px;
      margin: 0 auto;
    }

    .section-title {
      text-align: center;
      margin-bottom: 3rem;
    }

    .section-title h2 {
      font-size: 2.5rem;
      color: var(--dark);
      margin-bottom: 1rem;
    }

    .section-title p {
      color: #666;
      font-size: 1.1rem;
      max-width: 700px;
      margin: 0 auto;
    }

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

    .feature-card {
      background-color: white;
      border-radius: 10px;
      padding: 2rem;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s, box-shadow 0.3s;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    }

    .feature-icon {
      font-size: 2.5rem;
      color: var(--primary);
      margin-bottom: 1rem;
    }

    .feature-card h3 {
      font-size: 1.5rem;
      margin-bottom: 1rem;
      color: var(--dark);
    }

    .feature-card p {
      color: #666;
    }

    /* Compiler Section */
    .compiler-section {
      padding: 3rem 2rem;
      max-width: 1400px;
      margin: 0 auto;
    }

    .compiler-container {
      background-color: white;
      border-radius: 10px;
      box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
      overflow: hidden;
    }

    .editor-header {
      background-color: var(--dark);
      color: white;
      padding: 0.8rem 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .editor-title {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-weight: 500;
    }

    .editor-actions {
      display: flex;
      gap: 0.8rem;
    }

    .editor-btn {
      background-color: rgba(255, 255, 255, 0.1);
      color: white;
      border: none;
      padding: 0.4rem 0.8rem;
      border-radius: 5px;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 0.3rem;
      font-size: 0.9rem;
      transition: background-color 0.3s;
    }

    .editor-btn:hover {
      background-color: rgba(255, 255, 255, 0.2);
    }

    .editor-btn i {
      font-size: 1rem;
    }

    .editor-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    .editor-wrapper {
      border-right: 1px solid #eee;
    }

    .editor-wrapper:last-child {
      border-right: none;
    }

    textarea.code-editor {
      width: 100%;
      height: 300px;
      padding: 1rem;
      font-family: 'Courier New', monospace;
      font-size: 14px;
      border: none;
      resize: none;
      outline: none;
      background-color: #f8f9fa;
      color: #333;
    }

    .preview-container {
      margin-top: 2rem;
    }

    .preview-header {
      background-color: var(--dark);
      color: white;
      padding: 0.8rem 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-radius: 10px 10px 0 0;
    }

    .preview-actions {
      display: flex;
      gap: 0.8rem;
    }

    iframe#preview {
      width: 100%;
      height: 400px;
      border: none;
      background-color: white;
      border-radius: 0 0 10px 10px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    }

    /* Demo Code */
    .demo-code {
      max-width: 1200px;
      margin: 3rem auto;
      padding: 0 2rem;
    }

    .demo-code h3 {
      font-size: 1.8rem;
      margin-bottom: 1.5rem;
      color: var(--dark);
    }

    .demo-tabs {
      display: flex;
      gap: 0.5rem;
      margin-bottom: 1rem;
    }

    .demo-tab {
      padding: 0.6rem 1.2rem;
      background-color: #eee;
      border-radius: 5px 5px 0 0;
      cursor: pointer;
      font-weight: 500;
      transition: all 0.3s;
    }

    .demo-tab.active {
      background-color: var(--primary);
      color: white;
    }

    .demo-content {
      display: none;
      background-color: white;
      padding: 1.5rem;
      border-radius: 0 5px 5px 5px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    }

    .demo-content.active {
      display: block;
    }

    /* Footer */
    footer {
      background-color: var(--dark);
      color: white;
      padding: 3rem 2rem;
      text-align: center;
    }

    .footer-content {
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 2rem;
      text-align: left;
    }

    .footer-column h3 {
      font-size: 1.3rem;
      margin-bottom: 1.5rem;
      position: relative;
      display: inline-block;
    }

    .footer-column h3::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -8px;
      width: 50px;
      height: 3px;
      background-color: var(--primary);
    }

    .footer-column ul {
      list-style: none;
    }

    .footer-column ul li {
      margin-bottom: 0.8rem;
    }

    .footer-column ul li a {
      color: #ccc;
      text-decoration: none;
      transition: color 0.3s;
    }

    .footer-column ul li a:hover {
      color: white;
    }

    .social-links {
      display: flex;
      gap: 1rem;
      margin-top: 1rem;
    }

    .social-links a {
      color: white;
      font-size: 1.2rem;
      transition: color 0.3s;
    }

    .social-links a:hover {
      color: var(--primary);
    }

    .copyright {
      margin-top: 3rem;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      font-size: 0.9rem;
      color: #aaa;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }

      .hero h1 {
        font-size: 2.2rem;
      }

      .hero-buttons {
        flex-direction: column;
      }

      .editor-grid {
        grid-template-columns: 1fr;
      }

      .editor-wrapper {
        border-right: none;
        border-bottom: 1px solid #eee;
      }
    }

    /* Google Ads Container */
    .ad-container {
      max-width: 1200px;
      margin: 2rem auto;
      padding: 1rem;
      background-color: #f8f9fa;
      border-radius: 5px;
      text-align: center;
      border: 1px dashed #ccc;
    }

    .ad-container p {
      color: #666;
      margin-bottom: 0.5rem;
    }