/* styles.css */
body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f9;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 600px;
  margin: 50px auto;
  padding: 20px;
  background: #fff;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  border-radius: 8px;
}

h1 {
  text-align: center;
  color: #333;
}

form {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
}

input[type="text"] {
  flex: 1;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  margin-right: 10px;
}

button {
  padding: 10px 15px;
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #218838;
}

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

li {
  padding: 10px;
  background: #f9f9f9;
  border-bottom: 1px solid #ddd;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

li:last-child {
  border-bottom: none;
}

.completed {
  text-decoration: line-through;
  color: #999;
}