body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f5f5f5;
  color: #222;
  transition: background 0.3s, color 0.3s;
}

header {
  background: #4b6cb7;
  color: white;
  padding: 20px;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 2rem;
}

nav a {
  margin: 0 10px;
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.container {
  padding: 20px;
  max-width: 900px;
  margin: auto;
}

section {
  margin-bottom: 30px;
}

h2 {
  border-bottom: 2px solid #4b6cb7;
  padding-bottom: 5px;
}

ul {
  list-style: none;
  padding: 0;
}

ul li {
  margin: 8px 0;
}

a {
  color: #4b6cb7;
}

.profile-pic {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  margin: 15px auto;
  display: block;
  border: 3px solid white;
}

.toggle-btn {
  cursor: pointer;
  padding: 8px 15px;
  border: none;
  border-radius: 5px;
  background: #333;
  color: white;
  font-size: 14px;
}

/* Dark Mode */
.dark-mode {
  background-color: #121212;
  color: #f5f5f5;
}

.dark-mode header {
  background: #222;
}

.dark-mode a {
  color: #90caf9;
}

.project-card {
  background-color: #fff;
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.dark-mode .project-card {
  background-color: #1e1e1e;
  box-shadow: 0 2px 6px rgba(255, 255, 255, 0.05);
}