body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #24292e;
}

.input-section {
    display: flex;
    margin-bottom: 20px;
}

.input-section input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.input-section button {
    padding: 10px 15px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    margin-left: 10px;
    cursor: pointer;
    font-size: 16px;
}

.input-section button:hover {
    background-color: #218838;
}

.filters {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.filters button {
    padding: 5px 10px;
    margin: 0 5px;
    background-color: #f6f8fa;
    border: 1px solid #d1d5da;
    border-radius: 4px;
    cursor: pointer;
}

.filters button:hover {
    background-color: #e1e4e8;
}

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

#taskList li {
    padding: 10px;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
}

#taskList li:last-child {
    border-bottom: none;
}

#taskList li.completed {
    text-decoration: line-through;
    color: #888;
}

.task-counter {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
    padding-top: 10px;
    border-top: 1px solid #eee;
    font-size: 14px;
    color: #586069;
}

.task-counter button {
    padding: 5px 10px;
    background-color: #f6f8fa;
    border: 1px solid #d1d5da;
    border-radius: 4px;
    cursor: pointer;
}

.task-counter button:hover {
    background-color: #e1e4e8;
}

.delete-btn {
    margin-left: auto;
    background-color: #dc3545;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 3px 8px;
    cursor: pointer;
}

.delete-btn:hover {
    background-color: #c82333;
}