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

body {
  min-height: 100vh;
  background: #111;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
}

.app {
  width: 380px;
  background: #1e1e1e;
  padding: 25px;
  border-radius: 12px;
}

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

.todo-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.todo-form input,
.todo-form button {
  padding: 10px;
  border-radius: 6px;
  border: none;
  outline: none;
}

.todo-form input {
  background: #2c2c2c;
  color: #fff;
}

.todo-form button {
  background: #4f46e5;
  color: white;
  cursor: pointer;
}

.todo-form button:hover {
  background: #4338ca;
}

.task-list {
  margin-top: 20px;
}