:root {
    --bg: #f4f4f4;
    --text: #1a1a1a;
    --section-bg: #fff;
    --accent: rgb(130, 0, 0);
    --nav-bg: #1a1a1a;
    --nav-link: #fff;
    --footer-bg: #222;
    --footer-text: #aaa;
    --icon-color: #1a1a1a;
    --link-color: #1a1a1a;
    --link-hover: rgb(130, 0, 0);
  }

  [data-theme="dark"] {
    --bg: #121212;
    --text: #f4f4f4;
    --section-bg: #1e1e1e;
    --accent: rgb(255, 90, 90);
    --nav-bg: #000;
    --nav-link: #fff;
    --footer-bg: #000;
    --footer-text: #777;
    --icon-color: #f4f4f4;
    --link-color: #f4f4f4;
    --link-hover: rgb(255, 90, 90);
  }
* {
  transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}

a, .nav-links a, .social-icons a {
  transition: color 0.3s ease, text-decoration-color 0.3s ease;
}
section, header, nav, footer {
  transition: background-color 0.4s ease, color 0.4s ease, box-shadow 0.4s ease;
}

  body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
  }

  header {
    background-color: rgb(130, 0, 0);
    color: #fff;
    padding: 2rem 1rem;
    text-align: center;
  }

  header h1 {
    margin: 0;
    font-size: 2.5rem;
  }

  header p {
    margin-top: 0.5rem;
    font-style: italic;
  }

  main {
    padding: 2rem 1rem;
    max-width: 800px;
    margin: auto;
  }

  section {
    margin-bottom: 2.5rem;
    background: var(--section-bg);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
  }

  h2 {
    margin-top: 0;
    color: var(--accent);
  }

  ul {
    padding-left: 1.5rem;
  }

  footer {
    text-align: center;
    padding: 1rem;
    background-color: var(--footer-bg);
    color: var(--footer-text);
    font-size: 0.9rem;
  }

  nav {
    background-color: var(--nav-bg);
    padding: 0.5rem 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1000px;
    margin: auto;
  }

  .logo {
    color: #fff;
    font-weight: bold;
    font-size: 1.2rem;
  }

  .nav-links {
    list-style: none;
    display: flex;
    gap: 1rem;
    margin: 0;
    padding: 0;
  }

  .nav-links a {
    color: var(--nav-link);
    text-decoration: underline;
    font-weight: 500;
  }

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

  /* Mobile navbar */
  @media (max-width: 600px) {
    .nav-links {
      flex-direction: column;
      background-color: var(--nav-bg);
      position: absolute;
      top: 100%;
      left: 0;
      width: 100%;
      display: none;
    }

    nav:hover .nav-links {
      display: flex;
    }

    header h1 {
      font-size: 2rem;
    }

    main {
      padding: 1rem;
    }

    section {
      padding: 1rem;
    }
  }

  .social-icons {
    display: flex;
    gap: 1.2rem;
    margin-top: 1rem;
    font-size: 2rem;
  }

  .social-icons a {
    color: var(--icon-color);
    transition: color 0.3s ease;
    text-decoration: none;
  }

  .social-icons a:hover {
    color: var(--accent);
  }

  a {
    color: var(--link-color);
    text-decoration: underline;
    transition: color 0.3s ease;
  }

  a:hover {
    color: var(--link-hover);
  }