/* style.css */
:root {
    --bg: #0f1115;
    --fg: #f1f1f1;
    --primary: #1a73e8;
    --secondary: #2d2f36;
    --accent: #2c6bed;
    --card-bg: #1e1f25;
    --transition: 0.4s ease;
  }
  
  body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg);
    color: var(--fg);
    line-height: 1.6;
    overflow-x: hidden;
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
  }
  
  header {
    text-align: center;
    padding-bottom: 2rem;
  }
  
  h1.glow {
    font-size: clamp(2.5rem, 6vw, 4rem);
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary), 0 0 20px var(--primary);
    animation: fadeInUp 1s ease-out forwards;
  }
  
  h2 {
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    margin-bottom: 0.5rem;
    color: var(--accent);
  }
  
  p, a {
    font-size: 1.1rem;
    color: var(--fg);
  }
  
  a:hover {
    color: var(--primary);
  }
  
  .card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
  }
  
  .card.show {
    opacity: 1;
    transform: translateY(0);
  }
  
  .demo-section {
    margin-top: 4rem;
  }
  
  .interactive-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
  }
  
  .demo-box {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    font-size: 1.2rem;
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.3);
    transform: scale(0.95);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(40px);
  }
  
  .demo-box:hover {
    transform: scale(1.02);
    background-color: var(--secondary);
  }
  
  .demo-box.show {
    opacity: 1;
    transform: translateY(0);
  }
  
  .delay-1 { transition-delay: 0.2s; }
  .delay-2 { transition-delay: 0.4s; }
  .delay-3 { transition-delay: 0.6s; }
  
  .code-section pre {
    background: #1e1e1e;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
  }
  
  footer {
    text-align: center;
    margin-top: 4rem;
  }
  
  .button {
    background-color: var(--accent);
    color: white;
    padding: 0.75rem 1.5rem;
    margin: 0.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.3s ease;
    display: inline-block;
  }
  
  .button:hover {
    background-color: var(--primary);
  }
  
  .button.secondary {
    background-color: #444;
  }
  
  .button.secondary:hover {
    background-color: #666;
  }
  
  .fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
  }
  
  .fade-in.show {
    opacity: 1;
    transform: translateY(0);
  }
  
  @keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
  }
  
  @media (max-width: 600px) {
    .demo-box {
      font-size: 1rem;
    }
    .button {
      width: 100%;
      margin-bottom: 1rem;
    }
  }