body{font-family:Arial,sans-serif;background:#f5f5f5;display:flex;justify-content:center;padding-top:50px}.app-container{background:white;padding:30px;border-radius:12px;width:75%;max-width:300px;margin:0 15px;box-shadow:0 4px 12px #00000026}h1{text-align:center;color:#4f46e5;margin-bottom:20px}.todo-form{display:flex;margin-bottom:20px}.todo-form input{flex:1;padding:10px;border-radius:8px 0 0 8px;border:1px solid #ccc;font-size:16px}.todo-form button{padding:10px 20px;border-radius:0 8px 8px 0;border:none;background-color:#4f46e5;color:#fff;cursor:pointer}.todo-form button:hover{background-color:#3730a3}.todo-list{display:flex;flex-direction:column;gap:10px}.todo-item{display:flex;justify-content:space-between;padding:10px;border-radius:8px;background-color:#f3f4f6;transition:.2s}.todo-item.completed span{text-decoration:line-through;color:#9ca3af}.todo-item span{cursor:pointer}.todo-item:hover{background-color:#e0e7ff}.actions button{margin-left:5px;border:none;padding:5px 10px;border-radius:6px;cursor:pointer;font-size:14px}.actions button:hover{opacity:.8}.actions button:first-child{background-color:#facc15;color:#fff}.actions button:last-child{background-color:#ef4444;color:#fff}