body {
  font-family: 'Segoe UI', sans-serif;
  background: #f0f4f8;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  width: 90%;
  max-width: 400px;
}

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

.input-group {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

input {
  flex: 1;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 16px;
}

button {
  padding: 10px 16px;
  background-color: #4caf50;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  background-color: #45a049;
}

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

li {
  background: #f9f9f9;
  padding: 12px;
  margin-bottom: 10px;
  border-radius: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

li button {
  background-color: #ff5252;
  border: none;
  color: white;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
}

li button:hover {
  background-color: #e04848;
}