body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f4f6f8;
  color: #333;
}

.container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 20%;
  background: #007BFF;
  color: #fff;
  padding: 20px;
}

.sidebar h1 {
  margin-bottom: 10px;
}

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

.sidebar ul li {
  margin: 10px 0;
  cursor: pointer;
}

.sidebar ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

.status {
  margin-left: 10px;
  font-weight: bold;
}

.done {
  color: green;
}

.incomplete {
  color: red;
}

#remaining {
  margin-top: 20px;
  font-size: 18px;
}

button {
  display: block;
  margin-top: 10px;
  padding: 10px 15px;
  font-size: 16px;
  background: #fff;
  color: #007BFF;
  border: 1px solid #007BFF;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background: #0056b3;
  color: #fff;
}

#fileInput {
  display: none;
}

.content {
  flex: 1;
  padding: 30px;
  background: #fff;
}