body {
  font-family: Arial, sans-serif;
  margin: 40px;
  background-color: #f9f9f9;
  color: #333;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

.container {
  max-width: 700px;
  margin: auto;
}

h1 {
  text-align: center;
  color: #222;
}

img {
  display: block;
  margin: 20px auto;
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid #ccc;
}

.section {
  margin-top: 30px;
}

a {
  color: #0077cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

#mode-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 6px 12px;
  font-size: 0.9rem;
  cursor: pointer;
  background: #eee;
  border: 1px solid #ccc;
  border-radius: 4px;
}

body.dark {
  background-color: #121212;
  color: #eee;
}

body.dark a {
  color: #66aaff;
}

body.dark #mode-toggle {
  background: #333;
  color: #eee;
  border-color: #666;
}