/* Base reset */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f9f9f9;
  color: #222;
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

/* Header */
.site-header {
  background: #333;
  color: #fff;
  padding: 20px;
}

.site-header h1 {
  font-size: 1.8em;
  margin: 0;
}

.site-header nav ul {
  list-style: none;
  margin-top: 10px;
  padding: 0;
}

.site-header nav ul li {
  display: inline-block;
  margin-right: 15px;
}

.site-header nav ul li a {
  color: #fff;
  text-decoration: none;
}

/* Footer */
.site-footer {
  background: #333;
  color: #fff;
  text-align: center;
  padding: 15px;
  font-size: 0.9em;
  margin-top: 30px;
}

/* Main */
main {
  max-width: 1000px;
  margin: 20px auto;
  padding: 20px;
  background: #fff;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

/* Project card */
.project-card {
  padding: 10px 0;
}

.project-card h3 {
  margin-bottom: 5px;
}

.project-card p {
  margin-bottom: 10px;
}

/* Tags */
.tag {
  display: inline-block;
  background: #007acc;
  color: #fff;
  padding: 3px 8px;
  margin: 2px;
  border-radius: 5px;
  font-size: 0.8em;
}

a:hover {
  text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #121212;
    color: #e0e0e0;
  }

  .site-header {
    background: #1f1f1f;
  }

  .site-footer {
    background: #1f1f1f;
  }

  .project-card {
    background: #1a1a1a;
    border-radius: 5px;
    padding: 10px;
    margin-bottom: 10px;
  }

  a {
    color: #66baff;
  }

  .tag {
    background: #0b5ea8;
  }
}