body {
  font-family: sans-serif;
  background: #f0f0f0;
  display: flex;
  justify-content: center;
  padding: 2rem;
}

.app {
  background: #fff;
  color: #000;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 500px;
  transition: background 0.3s ease, color 0.3s ease;
}

h1 {
  text-align: center;
  margin-bottom: 1rem;
}

form {
  display: flex;
  gap: 0.5rem;
}

input {
  flex: 1;
  padding: 0.5rem;
  font-size: 1rem;
}

button {
  padding: 0.5rem 1rem;
  background: #007bff;
  color: #fff;
  border: none;
  cursor: pointer;
}

ul {
  list-style: none;
  padding: 0;
  margin-top: 1rem;
}

li {
  background: #eee;
  margin-bottom: 0.5rem;
  padding: 0.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform 0.2s ease;
}

li span {
  flex: 1;
}

li button {
  background: red;
  color: white;
  border: none;
  padding: 0.3rem 0.6rem;
  margin-left: 0.5rem;
  cursor: pointer;
}
body {
  font-family: sans-serif;
  background: #f0f0f0;
  display: flex;
  justify-content: center;
  padding: 2rem;
  transition: background 0.3s ease, color 0.3s ease;
}

body.dark {
  background: #121212;
  color: #eee;
}



body.dark .app {
  background: #1e1e1e;
  color: #836969;
}
li:hover {
  transform: scale(1.02);
}