body {
  font-family: Arial, sans-serif;
  background-color: #00ffdd;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  background-color: #fff;
  padding: 30px;
  border-radius: 15px;
  width: 350px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

h1 {
  text-align: center;
  margin-bottom: 20px;
  color: #333;
}

.input-section {
  display: flex;
  gap: 10px;
}

input[type="text"] {
  flex: 1;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

button {
  padding: 10px 15px;
  background-color: #000000;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.2s;
}

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


ul {
  list-style: none;
  padding: 0;
  margin-top: 20px;
}

li {
  padding: 10px;
  background-color: #f9f9f9;
  margin-bottom: 10px;
  border-radius: 5px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: background-color 0.2s;
}

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

li:hover {
  background-color: #e0e0e0;
}


.delete-btn {
  background-color: #dc3545;
  border: none;
  padding: 5px 8px;
  color: white;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.delete-btn:hover {
  background-color: #c82333;
}