body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f9;
  padding: 30px;
  text-align: center;
}

h1 {
  color: #333;
}

.input-area {
  margin-bottom: 20px;
}

#taskInput {
  width: 60%;
  padding: 10px;
  font-size: 16px;
}

#addBtn {
  padding: 10px 15px;
  font-size: 16px;
  background-color: #6E1E91; /* BTS-inspired purple 💜 */
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 6px;
}

#addBtn:hover {
  background-color: #581874;
}

ul {
  list-style: none;
  padding: 0;
  max-width: 400px;
  margin: 0 auto;
}

li {
  background: white;
  margin: 8px 0;
  padding: 10px;
  font-size: 18px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

li.done {
  text-decoration: line-through;
  color: gray;
}

button.delete {
  background-color: crimson;
  border: none;
  color: white;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
}

button.delete:hover {
  background-color: darkred;
}