body {
  font-family: Arial, sans-serif;
  background: #ffe6f0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: #fff0f6;
  padding: 25px;
  border-radius: 15px;
  width: 320px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  text-align: center;
}

h1 {
  color: #ff4d94;
}

.input-box {
  display: flex;
  gap: 8px;
  margin-bottom: 15px;
}

input {
  flex: 1;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid #ffcce0;
}

button {
  background: #ff80bf;
  border: none;
  color: white;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background: #ff4da6;
}

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

li {
  background: white;
  margin: 8px 0;
  padding: 8px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  cursor: pointer;
}

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