:root {
    --dark-bg: #0A0A0A;
    --light-bg: #F4F4F4;
    --primary-purple: #9333EA;
    --primary-blue: #2563EB;
    --text-color-dark: #FFFFFF;
    --text-color-light: #333333;
    --accent-color: #F39C12;
    --card-bg-dark: #1A1A1A;
    --card-bg-light: #FFFFFF;
  }
  
  body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-color-dark);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
  }
  
  .gradient-background {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background: 
      radial-gradient(circle at top right, rgba(147, 51, 234, 0.15) 0%, transparent 50%),
      radial-gradient(circle at bottom left, rgba(37, 99, 235, 0.15) 0%, transparent 50%);
  }
  
  .gradient-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
      rgba(147, 51, 234, 0.05) 0%,
      rgba(37, 99, 235, 0.05) 100%);
  }
  
  .content-wrapper {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
  }
  
  @keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }
  
  .gradient-text {
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    background-size: 200% 200%;
    animation: gradientFlow 5s ease infinite;
  }
  
  h1, h2, h3, h4, h5, h6 {
    color: var(--text-color-dark);
    margin-bottom: 40px;
  }
  
  h1 {
    margin-bottom: 50px;
    margin-top: 180px;
    font-size: 3rem;
    font-weight: 700;
  }
  
  h2 {
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom:60px;
  }
  
  p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
  }
  
  a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.3s ease;
  }
  
  a:hover {
    color: var(--primary-purple);
  }
  
  header {
    background-color: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
  }
  
  nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
  }
  
  .logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-color-dark);
  }
  
  nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  
  nav ul li {
    margin-left: 2rem;
  }
  
  nav ul li a {
    color: var(--text-color-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
  }
  
  nav ul li a:hover {
    color: var(--primary-purple);
  }
  
  #hero, #features, #demo, #about, #contact {
    margin-top: 8rem;
    margin-bottom: 8rem;
  }
  
  #hero {
    text-align: center;
    padding: 8rem 0;
  }
  
  .cta-button {
    display: inline-block;
    background-color: var(--primary-purple);
    color: var(--text-color-dark);
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    margin-top: 1rem;
    transition: background-color 0.3s ease, transform 0.3s ease;
  }
  
  .cta-button:hover {
    color: white;
    background-color:blueviolet;
    transform: translateY(-1px);
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
  }
  
  .feature-card {
    background-color: var(--card-bg-dark);
    color: var(--text-color-dark);
    padding: 2.5rem;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: left;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }
  
  .feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  }
  
  .feature-card strong {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    display: block;
  }
  
  .feature-card p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
  }
  
  #demo h2 {
    text-align: center;
    margin-bottom: 3rem;
  }
  
  #demo-container {
    background-color: var(--card-bg-dark);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }
  
  #url-input {
    display: flex;
    margin-bottom: 1rem;
  }
  
  #url-to-check {
    flex-grow: 1;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px 0 0 5px;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-color-dark);
  }
  
  #check-url {
    background-color: var(--primary-blue);
    color: var(--text-color-dark);
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 0 5px 5px 0;
    transition: background-color 0.3s ease;
  }
  
  #check-url:hover {
    background-color: var(--primary-purple);
  }
  
  #result {
    margin-top: 1rem;
    font-weight: bold;
    color: var(--accent-color);
  }
  
  .button-container {
    display: flex;
    justify-content: space-around;
    margin-top: 80px;
  }
  
  .action-button {
    background-color: var(--primary-blue);
    color: var(--text-color-dark);
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s ease;
    flex: 1;
    margin: 0 1rem;
    max-width: 200px;
  }
  
  footer {
    background-color: var(--card-bg-dark);
    color: var(--text-color-dark);
    text-align: center;
    padding: 3rem 0;
    margin-top: 8rem;
  }
  
  @media (max-width: 768px) {
    h1 {
      font-size: 2.5rem;
    }
  
    h2 {
      font-size: 2rem;
    }
  
    .features-grid {
      grid-template-columns: 1fr;
      gap: 2rem;
      margin-top: 3rem;
    }
  
    nav {
      flex-direction: column;
      align-items: flex-start;
    }
  
    nav ul {
      margin-top: 1rem;
    }
  
    nav ul li {
      margin-left: 0;
      margin-right: 1rem;
    }
  
    #hero, #features, #demo, #about, #contact {
      margin-top: 4rem;
      margin-bottom: 4rem;
    }
  
    #hero {
      padding: 4rem 0;
    }
  
    #demo h2 {
      margin-bottom: 2rem;
    }
  
    footer {
      margin-top: 4rem;
      padding: 2rem 0;
    }
  }