body {
    font-family: sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 500px;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
}

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

.input-area input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.input-area button {
    padding: 10px 15px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.input-area button:hover {
    background-color: #0056b3;
}

#todo-list {
    list-style: none;
    padding: 0;
}

#todo-list li {
    background-color: #f9f9f9;
    border: 1px solid #eee;
    margin-bottom: 5px;
    padding: 10px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#todo-list li span {
    flex: 1;
}

#todo-list li .button-group {
    display: flex;
    gap: 5px;
}

#todo-list li .button-group button {
    padding: 5px 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#todo-list li .button-group .edit-button {
    background-color: #28a745;
    color: white;
}

#todo-list li .button-group .edit-button:hover {
    background-color: #1e7e34;
}


#todo-list li .button-group .delete-button {
    background-color: #dc3545;
    color: white;
}

#todo-list li .button-group .delete-button:hover {
    background-color: #c82333;
}

#auth-area {
    text-align: center;
    margin-bottom: 20px;
}

#auth-area button {
    padding: 10px 15px;
    margin: 0 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#login-button {
    background-color: #007bff;
    color: white;
}

#login-button:hover {
    background-color: #0056b3;
}

#logout-button {
    background-color: #6c757d;
    color: white;
}

#logout-button:hover {
    background-color: #5a6268;
}