body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 20px;
    color: #333;
}
.container {
    max-width: 600px;
    margin: 0 auto;
}
.add-button {
    background-color: #007AFF;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 16px;
    cursor: pointer;
    margin-bottom: 20px;
    width: 100%;
}
.card {
    background-color: white;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
}
.card-content {
    flex-grow: 1;
}
.card h2 {
    margin: 0 0 10px 0;
    font-size: 18px;
}
.card p {
    margin: 0;
    color: #666;
}
.progress-circle {
    width: 60px;
    height: 60px;
    margin-left: 20px;
}
.progress-circle circle {
    fill: none;
    stroke-width: 5;
}
.progress-circle .bg {
    stroke: #e0e0e0;
}
.progress-circle .progress {
    stroke: #007AFF;
    stroke-linecap: round;
    transition: stroke-dashoffset 0.5s ease-out;
}
.task-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}
.task-actions button {
    margin-left: 10px;
    padding: 5px 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
.edit-button {
    background-color: #4CAF50;
    color: white;
}
.delete-button {
    background-color: #f44336;
    color: white;
}
.modal {
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
}
.modal-content {
    background-color: #fefefe;
    padding: 20px;
    border-radius: 10px;
    width: 80%;
    max-width: 500px;
}
.modal input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}
.modal button {
    padding: 10px 20px;
    margin-right: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
.modal .save-button {
    background-color: #4CAF50;
    color: white;
}
.modal .cancel-button {
    background-color: #f44336;
    color: white;
}