@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&display=swap');

:root {
  --bg: linear-gradient(135deg, #c3ecf7, #f5d6e0);
  --card-bg: rgba(255, 255, 255, 0.25);
  --card-blur: blur(10px);
  --border: rgba(255, 255, 255, 0.3);
  --shadow: rgba(0, 0, 0, 0.1);
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  font-family: 'Poppins', sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.todo-app {
  width: 100%;
  max-width: 450px;
  padding: 2rem;
  border-radius: 20px;
  background: var(--card-bg);
  backdrop-filter: var(--card-blur);
  box-shadow: 0 8px 32px var(--shadow);
  border: 1px solid var(--border);
}

.todo-app h1 {
  text-align: center;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #333;
}

.input-container {
  display: flex;
  gap: 10px;
  margin-bottom: 1.2rem;
}

.input-container input {
  flex: 1;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  border: 1px solid #ddd;
  font-size: 1rem;
}

.input-container button {
  background-color: #4CAF50;
  color: white;
  border: none;
  padding: 0.8rem 1rem;
  border-radius: 12px;
  cursor: pointer;
  font-size: 1.1rem;
  transition: 0.3s;
}

.input-container button:hover {
  background-color: #3a9442;
}

.task-list {
  list-style: none;
  padding-left: 0;
}

.task-list li {
  background: white;
  margin-bottom: 0.8rem;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform 0.2s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.task-list li span {
  flex: 1;
  cursor: pointer;
  transition: color 0.3s;
}

.task-list li.completed span {
  text-decoration: line-through;
  color: #aaa;
}

.task-list li button {
  background: transparent;
  border: none;
  font-size: 1.2rem;
  color: #e74c3c;
  cursor: pointer;
  transition: transform 0.2s;
}

.task-list li button:hover {
  transform: scale(1.1);
}