* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}

body {
  background-color: #f7f7f7;
  padding: 30px;
}

.container {
  max-width: 600px;
  margin: auto;
  background-color: #ffffff;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

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

form {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

form input {
  flex: 1;
  padding: 10px;
  font-size: 16px;
}

form button {
  padding: 10px 20px;
  background-color: #28a745;
  border: none;
  color: white;
  font-size: 16px;
  border-radius: 6px;
  cursor: pointer;
}

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

.task-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.task-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #e9e9e9;
  padding: 12px 16px;
  border-radius: 8px;
}

.task-list li button {
  background-color: #dc3545;
  border: none;
  color: white;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
}

.task-list li button:hover {
  background-color: #c82333;
}