/* 美化页面样式 */
body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 0;
}

h1 {
    text-align: center;
    margin: 20px 0;
    font-size: 2rem;
    color: #333;
}

form {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

label {
    margin: 0 10px;
    font-weight: bold;
}

input, select {
    padding: 5px;
    margin: 0 10px;
}

button {
    background-color: #007bff;
    color: white;
    padding: 5px 15px;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

#total-count {
    text-align: center;
    margin-bottom: 20px;
}

#data-table {
    width: 90%;
    margin: 0 auto;
    border-collapse: collapse;
    margin-bottom: 30px;
}

#data-table th, #data-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
}

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

#pagination button {
    padding: 10px 20px;
    margin: 0 5px;
    background-color: #28a745;
    color: white;
    border: none;
    cursor: pointer;
}

#pagination button:disabled {
    background-color: #cccccc;
}

#line-chart-container {
    margin: 0 auto;
    width: 90%;
    max-width: 800px;
    padding: 20px;
    background-color: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}