body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 20px;
}

#app {
    max-width: 800px;
    margin: 0 auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: #333;
}

#task-input {
    display: flex;
    margin-bottom: 20px;
}

#new-task {
    flex-grow: 1;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
}

#add-task {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
}

#task-list {
    list-style-type: none;
    padding: 0;
}

.task-item {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 4px;
    display: flex;
    align-items: center;
}

.task-content {
    flex-grow: 1;
    margin-right: 10px;
}

.task-actions button {
    background-color: transparent;
    border: none;
    cursor: pointer;
    font-size: 16px;
    margin-left: 5px;
}

.task-actions .edit {
    color: #2196F3;
}

.task-actions .delete {
    color: #F44336;
}

.task-actions .indent {
    color: #9C27B0;
}

.task-item.ui-sortable-helper {
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}