/*-------------------------------------------------------------
  header格式定义
  ------------------------------------------------------------*/
body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f4f4f9;
    font-size: 16px;
}

header {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-container {
    display: flex;
    align-items: center;
}

.logo {
    margin-right: 20px; /* 调整logo和导航之间的间距 */
}

.logo img {
    width: 160px; /* 调整logo的宽度 */
    height: auto; /* 保持logo的宽高比 */
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
}

nav ul li {
    margin-right: 60px; /* 调整导航项之间的间距 */
}

nav ul li:last-child {
    margin-right: 0; /* 去掉最后一个导航项的右边距 */
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

.main-content {
    padding: 20px;
    background-color: #f9f9f9;
}


h2 {
    color: #333;
    text-align: center;
    margin-bottom: 30px;
}

/*-------------------------------------------------------------
  公式显示样式定义
  ------------------------------------------------------------*/
.formula-container {
    background-color: #fafafa;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    margin: 20px auto;
    max-width: 800px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.formula-container h3 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.formula {
    font-family: 'Courier New', monospace;
    background-color: white;
    padding: 15px;
    border-radius: 4px;
    text-align: center;
    font-size: 1.1em;
    margin-bottom: 15px;
    border: 1px solid #e0e0e0;
}

.formula-params p {
    color: #333;
    font-size: 15px;
}

.formula-params ul {
    list-style-type: none;
    padding-left: 10px;
}

.formula-params li {
    margin-bottom: 5px;
    font-size: 14px;
    color: #555;
    padding-left: 15px;
    position: relative;
}

.formula-params li:before {
    content: "•";
    color: #5c67f2;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/*-------------------------------------------------------------
  表单分组样式定义
  ------------------------------------------------------------*/
.form-group {
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 25px;
    background-color: #fafafa;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.form-group legend {
    font-weight: bold;
    font-size: 1.2em;
    color: #2c3e50;
    padding: 5px 15px;
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 20px;
}

/*-------------------------------------------------------------
  表格的格式定义
  ------------------------------------------------------------*/
form {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    max-width: 800px;
    margin: 20px auto;
}

.form-row {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 8px 0;
}

.form-row label {
    width: 220px;
    text-align: left;
    margin-right: 15px;
    font-weight: bold;
    color: #555;
}

.form-row input[type="number"],
.form-row select,
.form-row input[type="text"],
.form-row input[type="email"] {
    flex: 2;
    padding: 8px 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 14px;
    font-family: Arial, sans-serif;
}

.form-row .radio-group {
    display: flex;
    align-items: center;
}

.form-row .radio-group label {
    width: auto;
    margin-right: 20px;
    font-weight: normal;
}

.error-message {
    color: red;
    display: none;
    font-size: 14px;
}

/*-------------------------------------------------------------
  UPS蓄电池选型计算书表格样式  ------------------------------------------------------------*/
.calc-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 14px;
}

.calc-table th {
    background-color: #f2f2f2;
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
    font-weight: bold;
    white-space: normal;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.calc-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
    white-space: normal;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.calc-table caption {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}

.calc-table .highlight-row {
    background-color: #e6f7ff;
}

.calc-table .green-row {
    background-color: #d4edda;
    color: #155724;
}

/* 公式区域样式 */
.formula-section {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 5px;
    padding: 15px;
    margin: 15px 0;
}

/* PDF下载按钮样式 */
.pdf-download-btn {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin: 20px 0;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.pdf-download-btn:hover {
    background-color: #45a049;
}

.error-message {
    color: red;
    display: none;
    font-size: 14px;
    margin-top: 5px;
    margin-left: 10px;
}

.input-field {
    width: 70%; /* 调整输入框的宽度 */
    padding: 10px;
    box-sizing: border-box;
}

/*-------------------------------------------------------------
  submit格式定义
  ------------------------------------------------------------*/
input[type="submit"] {
    width: 100%;
    padding: 10px;
    background-color: #5c67f2;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin-top: 20px;
}

input[type="submit"]:hover {
    background-color: #4a54e1;
}

input[type="submit"]:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

/*-------------------------------------------------------------
  footer格式定义
  ------------------------------------------------------------*/
footer {
    background-color: #f4f4f4;
    padding: 20px;
    text-align: center;
}

.footer-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.footer-section {
    margin: 10px 20px;
    line-height: 2;
    text-align: left;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #00008B
}

.footer-section p, .footer-section ul li {
    font-size: 18px;
    margin: 5px 0;
}

.copyright {
    margin-top: 20px;
    font-size: 12px;
    color: #777;
}

/*-------------------------------------------------------------
  for Cal_result.html
  ------------------------------------------------------------*/
p {
    margin: 8px 0;
    font-size: 14px;
    color: darkgrey;
}

.section-title {
    font-weight: bold;
    color: #555;
    margin-top: 15px;
    font-size: 16px;
    text-align: center;
}

.data-item {
    margin-left: 10px;
    text-align: center;
    color: black;
}

.divider {
    border-top: 1px solid #ccc;
    margin: 15px 0;
}

img {
    display: block; /* 使图片成为块级元素 */
    margin: 0 auto; /* 使图片水平居中 */
}