* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: 'Inter', 'Roboto', sans-serif;
      background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 100%);
      color: #e0e0e0;
      line-height: 1.6;
      min-height: 100vh;
    }
    
    .header {
      text-align: center;
      padding: 2rem 1rem;
      background: rgba(0, 0, 0, 0.2);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      margin-bottom: 2rem;
    }
    
    .header h1 {
      font-size: 2.5rem;
      margin-bottom: 0.5rem;
      background: linear-gradient(45deg, #00bcd4, #9333ea);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    
    .header p {
      color: #999;
      font-size: 1.1rem;
      max-width: 600px;
      margin: 0 auto;
    }
    
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1rem 2rem;
    }
    
    /* Navigation Grid */
    .nav-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.5rem;
      margin-bottom: 2rem;
    }
    
    /* Card Styles - HTML (Blue Theme) */
    .html-card {
      background: rgba(30, 30, 30, 0.8);
      border-radius: 12px;
      padding: 1.5rem;
      border: 1px solid rgba(0, 188, 212, 0.3);
      backdrop-filter: blur(10px);
      transition: all 0.3s ease;
      cursor: pointer;
      text-decoration: none;
      color: inherit;
      display: block;
      position: relative;
      overflow: hidden;
    }
    
    .html-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(45deg, rgba(0, 188, 212, 0.1), rgba(0, 229, 255, 0.1));
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    
    .html-card:hover {
      transform: translateY(-5px);
      border-color: rgba(0, 188, 212, 0.6);
      box-shadow: 0 10px 30px rgba(0, 188, 212, 0.2);
    }
    
    .html-card:hover::before {
      opacity: 1;
    }
    
    .html-card h3 {
      color: #00bcd4;
    }
    
    /* Card Styles - CSS (Purple Theme) */
    .css-card {
      background: rgba(30, 20, 30, 0.8);
      border-radius: 12px;
      padding: 1.5rem;
      border: 1px solid rgba(147, 51, 234, 0.3);
      backdrop-filter: blur(10px);
      transition: all 0.3s ease;
      cursor: pointer;
      text-decoration: none;
      color: inherit;
      display: block;
      position: relative;
      overflow: hidden;
    }
    
    .css-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(45deg, rgba(147, 51, 234, 0.1), rgba(168, 85, 247, 0.1));
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    
    .css-card:hover {
      transform: translateY(-5px);
      border-color: rgba(147, 51, 234, 0.6);
      box-shadow: 0 10px 30px rgba(147, 51, 234, 0.2);
    }
    
    .css-card:hover::before {
      opacity: 1;
    }
    
    .css-card h3 {
      color: #9333ea;
    }
    
    /* Card Styles - JavaScript (Yellow/Gold Theme) */
    .js-card {
      background: rgba(35, 30, 15, 0.8);
      border-radius: 12px;
      padding: 1.5rem;
      border: 1px solid rgba(245, 158, 11, 0.3);
      backdrop-filter: blur(10px);
      transition: all 0.3s ease;
      cursor: pointer;
      text-decoration: none;
      color: inherit;
      display: block;
      position: relative;
      overflow: hidden;
    }
    
    .js-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(45deg, rgba(245, 158, 11, 0.1), rgba(251, 191, 36, 0.1));
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    
    .js-card:hover {
      transform: translateY(-5px);
      border-color: rgba(245, 158, 11, 0.6);
      box-shadow: 0 10px 30px rgba(245, 158, 11, 0.2);
    }
    
    .js-card:hover::before {
      opacity: 1;
    }
    
    .js-card h3 {
      color: #f59e0b;
    }
    
    /* Shared Card Content Styles */
    .nav-card-content {
      position: relative;
      z-index: 1;
    }
    
    .nav-card-content h3 {
      font-size: 1.3rem;
      margin-bottom: 0.8rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    
    .nav-card-content p {
      color: #ccc;
      font-size: 0.95rem;
      line-height: 1.5;
      margin-bottom: 1rem;
    }
    
    .features {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    
    .feature-tag {
      padding: 0.3rem 0.6rem;
      border-radius: 12px;
      font-size: 0.8rem;
    }
    
    /* HTML Card Tags */
    .html-card .feature-tag {
      background: rgba(0, 188, 212, 0.2);
      color: #00e5ff;
      border: 1px solid rgba(0, 188, 212, 0.3);
    }
    
    /* CSS Card Tags */
    .css-card .feature-tag {
      background: rgba(147, 51, 234, 0.2);
      color: #a855f7;
      border: 1px solid rgba(147, 51, 234, 0.3);
    }
    
    /* JavaScript Card Tags */
    .js-card .feature-tag {
      background: rgba(245, 158, 11, 0.2);
      color: #fbbf24;
      border: 1px solid rgba(245, 158, 11, 0.3);
    }
    
    .nav-icon {
      font-size: 1.5rem;
      margin-right: 0.5rem;
    }
    
    /* Footer Styles */
    .footer {
      margin-top: 3rem;
      background: rgba(20, 20, 20, 0.9);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(10px);
    }
    
    .footer-content {
      max-width: 1200px;
      margin: 0 auto;
      padding: 2rem 1rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1.5rem;
    }
    
    .footer-brand h3 {
      font-size: 1.3rem;
      margin-bottom: 0.3rem;
      background: linear-gradient(45deg, #00bcd4, #9333ea, #f59e0b);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    
    .footer-brand p {
      color: #999;
      font-size: 0.9rem;
    }
    
    .footer-info {
      text-align: right;
    }
    
    .footer-info p {
      color: #ccc;
      margin-bottom: 0.5rem;
      font-size: 0.9rem;
    }
    
    .footer-links {
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    
    .footer-link {
      color: #00bcd4;
      text-decoration: none;
      font-size: 0.85rem;
      transition: color 0.3s ease;
    }
    
    .footer-link:hover {
      color: #9333ea;
    }
    
    .divider {
      color: #666;
      font-size: 0.8rem;
    }
    
    /* Responsive Styles */
    @media screen and (max-width: 768px) {
      .nav-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
      }
      
      .header h1 {
        font-size: 2rem;
      }
      
      .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
      }
      
      .footer-info {
        text-align: center;
      }
      
      .footer-links {
        justify-content: center;
      }
    }
    
    @media screen and (max-width: 480px) {
      .header {
        padding: 1.5rem 1rem;
      }
      
      .header h1 {
        font-size: 1.8rem;
      }
      
      .header p {
        font-size: 1rem;
      }
      
      .nav-card-content h3 {
        font-size: 1.2rem;
      }
      
      .nav-card-content p {
        font-size: 0.9rem;
      }
      
      .footer-content {
        padding: 1.5rem 1rem;
      }
    }
    
    /* Semua Code Dibantu Oleh Ai */