* {
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, sans-serif;
}

body {
  background: linear-gradient(135deg, #ffd6e0, #cdeffd);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.app {
  background: #fff;
  padding: 40px;
  border-radius: 20px;
  width: 320px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
  text-align: center;
}

h1 {
  margin-bottom: 16px;
}

.input-box {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.input-box input {
  flex: 1;
  padding: 10px;
  border-radius: 12px;
  border: 2px solid #ddd;
  outline: none;
}

.input-box button {
  width: 42px;
  border-radius: 50%;
  border: none;
  background: #ff8fab;
  color: white;
  font-size: 20px;
  cursor: pointer;
  transition: 0.2s;
}

.input-box button:hover {
  transform: scale(1.1);
}

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

li {
  background: #f7f7f7;
  padding: 10px 12px;
  margin-bottom: 8px;
  border-radius: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  animation: pop 0.2s ease;
}

li.done {
  text-decoration: line-through;
  opacity: 0.6;
}

li button {
  border: none;
  background: #ff6b6b;
  color: white;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  cursor: pointer;
}

@keyframes pop {
  from { transform: scale(0.9); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}