body{background:#f5f5f5;justify-content:center;margin:0;padding-top:50px;font-family:Arial,sans-serif;display:flex}.app-container{background:#fff;border-radius:12px;width:100%;max-width:500px;padding:30px;box-shadow:0 4px 12px #00000026}h1{text-align:center;color:#4f46e5;margin-bottom:20px}.todo-form{margin-bottom:20px;display:flex}.todo-form input{border:1px solid #ccc;border-radius:8px 0 0 8px;flex:1;padding:10px;font-size:16px}.todo-form button{color:#fff;cursor:pointer;background-color:#4f46e5;border:none;border-radius:0 8px 8px 0;padding:10px 20px;transition:all .2s}.todo-form button:hover{background-color:#3730a3}.todo-list{flex-direction:column;gap:10px;display:flex}.todo-item{background-color:#f3f4f6;border-radius:8px;justify-content:space-between;align-items:center;padding:10px;transition:all .2s;display:flex}.todo-item.completed span{color:#9ca3af;text-decoration:line-through}.todo-item span{cursor:pointer;word-break:break-word;flex:1}.todo-item:hover{background-color:#e0e7ff}.actions{display:flex}.actions button{cursor:pointer;border:none;border-radius:6px;margin-left:5px;padding:5px 10px;font-size:14px;transition:all .2s}.actions button:hover{opacity:.8}.actions button:first-child{color:#fff;background-color:#facc15}.actions button:last-child{color:#fff;background-color:#ef4444}