:root {
      --bg-color: #111;
      --text-color: #eee;
      --secondary-color: #aaa;
      --accent-color: #999;
    }

    body.light {
      --bg-color: #f5f5f5;
      --text-color: #111;
      --secondary-color: #444;
      --accent-color: #555;
    }

    body {
      margin: 0;
      padding: 0;
      font-family: "Segoe UI", Roboto, Helvetica, sans-serif;
      background-color: var(--bg-color);
      color: var(--text-color);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      height: 100vh;
      text-align: center;
      transition: background-color 0.3s, color 0.3s;
      animation: fadeIn 2s ease-in;
    }
	

    @keyframes fadeIn {
      from { opacity: 0.01; }
      to { opacity: 1; }
    }

   
    svg { 
      max-width: 300px;
      height: auto;
      margin-bottom: 1rem;
    }

    h1 {
      font-size: 2.5rem;
      margin: 0.2rem 0;
      letter-spacing: 0.1em;
    }
    h3 {
      font-size: 1.4rem;
      margin: 0.5rem 0 2rem;
      color: var(--secondary-color);
      font-weight: normal;
    }
    h4, p {
      font-size: 0.9rem;
      color: var(--accent-color);
      margin: 0.5rem 0;
    }
    code {
      font-family: monospace;
      color: var(--accent-color);
    }
    footer {
      position: absolute;
      bottom: 1rem;
      font-size: 0.9rem;
      color: var(--secondary-color);
    }
    #toggleTheme {
      position: absolute;
      bottom: 1rem;
      right: 1rem;
      background: none;
      border: 1px solid var(--secondary-color);
      color: var(--secondary-color);
      padding: 0.4rem 0.7rem;
      font-size: 0.8rem;
      border-radius: 4px;
      cursor: pointer;
      background-color: transparent;
    }
    #toggleTheme:hover {
      background-color: var(--secondary-color);
      color: var(--bg-color);
    }
    @media (max-width: 600px) {
      h1 { font-size: 2rem; }
      h3 { font-size: 1.1rem; }
      svg { max-width: 200px; } 
    }