/* Reset & base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #74ebd5, #acb6e5);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Glassmorphism Container */
.container {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  padding: 30px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  width: 90%;
  max-width: 400px;
  animation: fadeIn 1s ease-in-out;
}

.title {
  text-align: center;
  margin-bottom: 20px;
  color: #fff;
}

/* Input area */
.input-area {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

input[type="text"] {
  flex: 1;
  padding: 12px;
  border-radius: 12px;
  border: none;
  font-size: 16px;
  outline: none;
}

#addBtn {
  background-color: #ffffff;
  border: none;
  padding: 0 16px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 18px;
  transition: transform 0.2s ease;
}

#addBtn:hover {
  transform: scale(1.1);
}

/* Task List */
.task-list {
  list-style: none;
  max-height: 300px;
  overflow-y: auto;
}

.task-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
  margin-bottom: 10px;
  padding: 12px;
  border-radius: 10px;
  animation: slideIn 0.3s ease forwards;
}

.task-list li.completed span {
  text-decoration: line-through;
  opacity: 0.6;
}

.task-list li button {
  background-color: #ff4d4d;
  border: none;
  border-radius: 6px;
  color: white;
  padding: 6px 10px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.task-list li button:hover {
  background-color: #e63636;
}

/* Clear Button */
.clear-btn {
  margin-top: 15px;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.4);
  border: none;
  padding: 12px;
  border-radius: 10px;
  cursor: pointer;
  color: white;
  font-weight: bold;
  transition: background-color 0.2s ease;
}

.clear-btn:hover {
  background-color: rgba(255, 255, 255, 0.6);
  color: #333;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}