/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 动态性能页面样式 */
.paste-section {
    margin-bottom: 25px;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
}

.paste-header {
    display: flex;
    margin-bottom: 10px;
    padding: 8px 0;
    border-bottom: 2px solid #3498db;
}

.header-cell {
    flex: 1;
    font-weight: bold;
    color: #2c3e50;
    text-align: center;
}

#dataPasteArea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: monospace;
    resize: vertical;
    margin-bottom: 10px;
}

.process-button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

.process-button:hover {
    background-color: #2980b9;
}

.visualization-section {
    margin-top: 25px;
}

.chart-container {
    margin-bottom: 20px;
    padding: 10px;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 4px;
}

#performanceChart {
    max-width: 100%;
    height: 400px;
}

.slider-container {
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
    display: flex;
    align-items: center;
    gap: 15px;
}

.data-slider {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: #ddd;
    outline: none;
}

.slider-value {
    min-width: 120px;
    font-weight: 500;
    color: #2c3e50;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f7fa;
    color: #2c3e50;
    line-height: 1.5;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 12px 0;
    background-color: #2c3e50;
    color: white;
}

header h1 {
    color: white;
    font-size: 1.6rem;
    font-weight: 600;
    padding-left: 5px; /* 标题向左移动 */
}

.instructions-button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
    margin-left: 10px;
    text-decoration: none;
    display: inline-block;
}

.download-button {
    background-color: transparent;
    color: white;
    border: none;
    padding: 8px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    margin-right: 10px;
    text-decoration: none;
    display: inline-block;
}

.instructions-button:hover {
    background-color: #2980b9;
}

.download-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #3498db;
}

/* GitHub按钮样式 */
.github-button {
    background-color: transparent;
    color: white;
    border: none;
    padding: 8px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
}

.github-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #3498db;
}

/* 版本更新日志按钮样式 */
.version-log-button {
    background-color: transparent;
    color: white;
    border: 1px solid white;
    padding: 2px 8px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    margin-left: 10px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.version-log-button:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* 语言选择器样式 */
.language-selector {
    position: relative;
    margin-left: 10px;
}

.language-button {
    background-color: transparent;
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
}

.language-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #3498db;
}

.language-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    min-width: 120px;
    margin-top: 5px;
}

.language-menu-item {
    padding: 10px 15px;
    cursor: pointer;
    color: #333;
    transition: background-color 0.3s ease;
    border-bottom: 1px solid #eee;
}

.language-menu-item:last-child {
    border-bottom: none;
}

.language-menu-item:hover {
    background-color: #f5f5f5;
}

.language-menu-item.active {
    background-color: #3498db;
    color: white;
}
    transform: scale(1.1);
}

/* 版本更新日志模态框样式 */
.version-log-modal .version-log-modal-content {
    max-height: 75vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* 版本更新日志内容样式 */
.version-log-content {
    margin-top: 20px;
    max-height: 55vh;
    overflow-y: auto;
    flex: 1;
}

.version-entry {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.version-entry:last-child {
    border-bottom: none;
}

.version-entry h3 {
    color: #3498db;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.version-entry ul {
    padding-left: 20px;
    margin: 0;
}

.version-entry li {
    margin-bottom: 6px;
    line-height: 1.5;
    color: #555;
}

/* 滚动条样式 */
.version-log-content::-webkit-scrollbar {
    width: 8px;
}

.version-log-content::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.version-log-content::-webkit-scrollbar-thumb {
    background: #bdc3c7;
    border-radius: 4px;
}

.version-log-content::-webkit-scrollbar-thumb:hover {
    background: #95a5a6;
}

/* 标签页样式 */
.tabs {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.tab-buttons {
    display: flex;
    flex-wrap: wrap;
    background-color: #ecf0f1;
    border-bottom: 1px solid #bdc3c7;
}

.tab-button {
    background: none;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 0.85rem;
    color: #7f8c8d;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
}

.tab-button:hover {
    background-color: #d5dbdb;
    color: #34495e;
}

.tab-button.active {
    background-color: white;
    color: #3498db;
    border-bottom: 2px solid #3498db;
    font-weight: 500;
}

.tab-content {
    display: none;
    padding: 15px;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 区域样式 */
.section {
    margin-bottom: 20px;
}

.art-section {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    padding: 12px;
    background-color: #f8f9fa;
    border-radius: 6px;
}

.art-text {
    font-size: 2.2rem;
    font-weight: bold;
    color: #2c3e50;
    font-family: 'Courier New', monospace;
}

canvas {
    border: 1px solid #ddd;
    background-color: white;
    border-radius: 4px;
}

.section h2 {
    margin-bottom: 12px;
    color: #2c3e50;
    font-size: 1.2rem;
    padding-bottom: 6px;
    border-bottom: 1px solid #ecf0f1;
}

/* 输入字段样式 */
.input-grid {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

/* 混合动力系统计算页面的5行6列布局 */
#hybrid-system .input-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(5, auto);
    gap: 10px;
    margin-bottom: 15px;
    grid-auto-flow: column;
}

#hybrid-system .input-group {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

#hybrid-system .input-group label {
    font-size: 0.9rem;
    color: #2c3e50;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#hybrid-system .input-group input {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
}

#hybrid-system .input-group input:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.input-column {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* 响应式设计 - 小屏幕设备 */
@media (max-width: 1200px) {
    .input-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 900px) {
    .input-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 600px) {
    .input-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 400px) {
    .input-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 320px) {
    .input-grid {
        grid-template-columns: 1fr;
    }
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.input-group label {
    font-size: 0.85rem;
    color: #555;
    font-weight: 500;
}

.input-group input {
    padding: 5px 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: #3498db;
}

.input-group.highlight input {
    background-color: #e8f4fd;
}

.input-group.highlight-green input {
    background-color: #e8f8f5;
}

/* 导入导出按钮 */
.import-export {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

.import-export-button {
    background-color: #95a5a6;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

.import-export-button:hover {
    background-color: #7f8c8d;
}

/* 页脚样式 */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 15px 0;
    margin-top: 20px;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    white-space: nowrap;
}

.footer-content a {
    color: white;
    margin: 0 10px;
    text-decoration: none;
    display: inline-block;
}

.footer-content a:hover {
    text-decoration: underline;
}

/* 登录按钮样式 */
.login-button {
    background-color: transparent;
    color: white;
    border: none;
    padding: 8px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    margin-right: 10px;
}

.login-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #3498db;
}

/* 用户信息样式 */
.user-info {
    position: relative;
    display: flex;
    align-items: center;
    gap: 5px;
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 12px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.user-email {
    color: white;
    font-size: 14px;
    font-weight: 500;
}

.user-menu-button {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 12px;
    padding: 2px 4px;
    border-radius: 3px;
    transition: background-color 0.2s;
}

.user-menu-button:hover {
    background: rgba(255, 255, 255, 0.1);
}

.user-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 5px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 120px;
    z-index: 1000;
}

.user-menu-item {
    padding: 10px 15px;
    cursor: pointer;
    color: #333;
    font-size: 14px;
    transition: background-color 0.2s;
}

.user-menu-item:hover {
    background: #f5f5f5;
}

.user-menu-item:first-child {
    border-radius: 8px 8px 0 0;
}

.user-menu-item:last-child {
    border-radius: 0 0 8px 8px;
    border-top: 1px solid #eee;
    color: #e74c3c;
}

.user-menu-item:last-child:hover {
    background: #fee;
}

/* 登录模态框样式增强 */
.login-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
}

.login-modal .modal-content {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 400px;
    position: relative;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.7);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.error-message {
    background-color: #f8d7da;
    color: #721c24;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 15px;
    border: 1px solid #f5c6cb;
    font-size: 0.9rem;
}

.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 20px;
    color: #3498db;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.switch-form {
    text-align: center;
    margin-top: 15px;
    font-size: 0.9rem;
    color: #666;
}

.switch-form a {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
}

.switch-form a:hover {
    text-decoration: underline;
}

#loginSection, #registerSection {
    transition: opacity 0.3s ease;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.modal-content button[type="submit"] {
    width: 100%;
    background-color: #3498db;
    color: white;
    border: none;
    padding: 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.modal-content button[type="submit"]:hover {
    background-color: #2980b9;
}

.modal-content button[type="submit"]:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
}

/* 模态框网格布局 */
.modal-grid {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

/* 模态框列布局 */
.modal-column {
    flex: 1;
    min-width: 250px;
}

.close-button {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 1.5rem;
    cursor: pointer;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
}

.form-group input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

/* 注册按钮样式 */
#registerButton {
    width: 100%;
    padding: 10px;
    background-color: #27ae60;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}

#registerButton:hover {
    background-color: #229954;
}

/* 结果容器样式 */
/* 默认结果容器样式（适用于其他页面） */
.results-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.result-section {
    background-color: #f8f9fa;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid #e9ecef;
    height: fit-content;
}

.result-section h3 {
    color: #2c3e50;
    font-size: 1rem;
    margin-bottom: 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid #dee2e6;
}

/* COG加湿器部分上移样式 */
.result-section h3 + .result-item, 
.result-section h3[style*="COG加湿器"] + .result-item {
    margin-top: -8px; /* 调整上移距离，增大移动量 */
}

/* 混合动力系统计算页面特殊样式 */
#hybrid-system .results-container {
    display: block;
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

#hybrid-system .result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, auto);
    gap: 15px;
}

#hybrid-system .result-section {
    background-color: white;
    padding: 15px;
    border-radius: 6px;
    border: 1px solid #e9ecef;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

#hybrid-system .result-item {
    display: flex;
    align-items: center;
    margin-bottom: 6px;
}

#hybrid-system .result-item span:first-child {
    flex: none;
    margin-right: 0;
    white-space: nowrap;
}

#hybrid-system .result-item span:last-child {
    flex: none;
    margin-left: 0;
    text-align: left !important;
    color: #000000;
}

/* 第一组：第一行第一列，5个结果 */
#hybrid-system .result-grid .result-section:nth-child(1) {
    grid-column: 1;
    grid-row: 1;
}

/* 第二组：第二行第一列，4个结果 */
#hybrid-system .result-grid .result-section:nth-child(2) {
    grid-column: 1;
    grid-row: 2;
}

/* 第三组：第一行第二列，5个结果 */
#hybrid-system .result-grid .result-section:nth-child(3) {
    grid-column: 2;
    grid-row: 1;
}

/* 第四组：第一行第三列，1个结果 */
#hybrid-system .result-grid .result-section:nth-child(4) {
    grid-column: 3;
    grid-row: 1;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    font-size: 0.85rem;
    border-bottom: 1px solid #f1f3f4;
}

.result-item:last-child {
    border-bottom: none;
}

.result-item span:first-child {
    color: #555;
}

/* 问号提示样式 */
.result-item span[id$="Tooltip"] {
    color: #2980b9 !important;
    font-weight: bold !important;
    background-color: #ecf0f1;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    margin-left: -40px;
    cursor: help;
    position: relative;
    z-index: 10;
    vertical-align: middle;
}

.result-item span:last-child {
    font-weight: 500;
    color: #000000;
}

/* 公式区域样式 */
.formula-section {
    background-color: #f8f9fa;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid #e9ecef;
}

.formula-section h3 {
    color: #2c3e50;
    font-size: 1rem;
    margin-bottom: 8px;
}

.formula-text {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: #2c3e50;
}

.formula-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.formula-table td {
    text-align: center;
    vertical-align: middle;
    padding: 15px 10px;
    min-height: 60px;
}

/* 优化MathJax公式显示 */
.formula-table .MathJax {
    font-size: 110% !important;
}

.formula-text {
    text-align: center;
}

.formula-table th, .formula-table td {
    padding: 8px 12px;
    border: 1px solid #ddd;
    text-align: left;
}

.formula-table th {
    background-color: #f0f0f0;
    font-weight: bold;
}

.formula-table tr:nth-child(even) {
    background-color: #f9f9f9;
}

.formula-explanation {
    font-size: 0.8rem;
    color: #555;
    margin-top: 8px;
}

.formula-explanation p {
    margin-bottom: 3px;
}

/* 说明区域和注释 */
.explanation-section,
.note {
    background-color: #f1f8ff;
    padding: 12px;
    border-radius: 6px;
    margin-top: 15px;
}

.explanation-section h3 {
    color: #2c3e50;
    font-size: 1rem;
    margin-bottom: 8px;
}

.explanation-section p {
    font-size: 0.85rem;
    color: #555;
    margin-bottom: 6px;
}

.reaction-formula {
    font-family: 'Courier New', monospace;
    background-color: white;
    padding: 8px;
    border-radius: 4px;
    margin: 8px 0;
}

.note {
    font-size: 0.8rem;
    color: #666;
    font-style: italic;
}

/* 氢气值表格 */
.hydrogen-value-table {
    width: 100%;
    border-collapse: collapse;
}

.table-row {
    display: flex;
    border-bottom: 1px solid #dee2e6;
}

.table-row:last-child {
    border-bottom: none;
}

.table-cell {
    flex: 1;
    padding: 8px;
    font-size: 0.85rem;
}

.table-cell:first-child {
    background-color: #f8f9fa;
    font-weight: 500;
}

/* 介质选择 */
.medium-selection {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px;
    background-color: #f8f9fa;
    border-radius: 4px;
    margin-top: 8px;
}

.medium-selection label {
    font-weight: 500;
}

.medium-selection select {
    padding: 6px 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
    background-color: white;
}

#selectedDensity {
    font-size: 0.9rem;
    color: #555;
    font-style: italic;
}

/* 双列输入布局 */
#heat-exchanger .input-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, auto);
    gap: 15px;
}

/* 参考文献样式 */
.reference {
    margin-top: 20px;
    padding: 12px;
    background-color: #f0f7fb;
    border-radius: 6px;
    border: 1px solid #d4e6f1;
}

.reference h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-top: 0;
}

.reference-list {
    margin: 0;
    padding-left: 20px;
}

.reference-list li {
    color: #34495e;
    font-size: 0.8rem;
    line-height: 1.5;
    margin-bottom: 4px;
}

#heat-exchanger .input-container {
    display: flex;
    justify-content: space-between;
    position: relative;
}

/* 移除了垂直线伪元素 */

#heat-exchanger .input-column {
    width: 48%;
}

#heat-exchanger .input-column:first-child {
    padding-right: 15px;
}

#heat-exchanger .input-column:last-child {
    padding-left: 15px;
}

#heat-exchanger .results-container {
    display: flex;
    justify-content: space-between;
    position: relative;
}

#heat-exchanger .result-section:last-child {
    position: relative;
    left: -21.5%;
    width: 25%;
    min-width: unset;
    max-width: unset;
    resize: none;
}

#heat-exchanger .input-column {
    width: 48%;
}

#heat-exchanger .results-container {
    display: flex;
    justify-content: space-between;
    position: relative;
}

#heat-exchanger .result-section {
    width: 25%;
    min-width: unset;
    max-width: unset;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 6px;
    border: 1px solid #e9ecef;
    resize: none;
    overflow: auto;
}

#heat-exchanger .result-section p {
    margin: 0;
    white-space: nowrap;
    text-align: left !important;
}

/* 换热器/中冷器页恢复原始输入框行距 */
#heat-exchanger .input-group {
    gap: 3px;
}

#heat-exchanger .input-group input {
    padding: 6px 10px;
    font-size: 0.9rem;
}

.result-item {
    display: flex;
    align-items: center;
}

.result-item span:first-child {
    white-space: nowrap;
    margin-right: 0;
}

.result-item span:last-child {
    margin-left: 0;
    text-align: left !important;
    color: #000000;
}

.input-column h3 {
    margin-bottom: 12px;
    color: #2c3e50;
    font-size: 1.1rem;
}

/* 小工具样式 */
.tool-input {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    border: 1px solid #e9ecef;
}

.tool-input h2 {
    margin-bottom: 12px;
}

#sumInput {
    width: 100%;
    padding: 8px;
    margin-bottom: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
    resize: vertical;
    min-height: 80px;
}

.tool-button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    margin-right: 10px;
    transition: background-color 0.3s ease;
}

.tool-button:hover {
    background-color: #2980b9;
}

.tool-result {
    margin-top: 15px;
    font-size: 1rem;
    font-weight: 500;
}

.flow-velocity-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.tool-results {
    margin-top: 12px;
    display: flex;
    gap: 15px;
}

/* 管路压损计算样式 */
#pipeline-pressure .input-container {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

#pipeline-pressure .input-column {
    flex: 1;
    min-width: 300px;
}

#pipeline-pressure .input-column h3 {
    margin-bottom: 12px;
    color: #333;
    border-bottom: 2px solid #007bff;
    padding-bottom: 4px;
}

/* 四列布局样式 */
.pipeline-four-column {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

.pipeline-column {
    background: #f8f9fa;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.pipeline-column h3 {
    margin-bottom: 12px;
    color: #333;
    border-bottom: 2px solid #007bff;
    padding-bottom: 4px;
    font-size: 15px;
}

.pipeline-column .input-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pipeline-column .input-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.pipeline-column .input-group label {
    font-weight: 500;
    color: #495057;
    font-size: 13px;
}

.pipeline-column .input-group input {
    padding: 5px 8px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 12px;
}

.pipeline-column .result-section {
    margin-top: 0;
}

.pipeline-column .result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid #e9ecef;
    font-size: 13px;
}

.pipeline-column .result-item:last-child {
    border-bottom: none;
}

.pipeline-column .result-item span:first-child {
    color: #495057;
    margin-right: 10px;
}

.pipeline-column .result-item span:last-child {
    color: #000000;
    font-weight: 500;
    text-align: right;
}

/* 响应式设计 */
@media (max-width: 1400px) {
    .pipeline-four-column {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .pipeline-four-column {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .pipeline-column {
        padding: 10px;
    }
}

/* 对话框样式 */
.dialog {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.dialog-content {
    background-color: white;
    border-radius: 8px;
    max-width: 95%;
    width: auto;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.3);
}

.dialog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid #dee2e6;
}

.dialog-header h2 {
    margin: 0;
    font-size: 1.2rem;
    color: #2c3e50;
}

.close-button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #7f8c8d;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

/* 信息按钮样式 */
.info-button {
    background-color: #e0f7fa;
    color: #006064;
    border: 1px solid #80deea;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    position: relative;
    top: -7px;
}

.info-button:hover {
    background-color: #80deea;
    transform: scale(1.1);
}
    transition: all 0.3s ease;
/* 此选择为空，推测为多余代码，已移除 */
/* 此处多余的右大括号，已移除 */

.close-button:hover {
    background-color: #ecf0f1;
    color: #2c3e50;
}

.dialog-body {
    padding: 15px;
}

.dialog-body p {
    margin-bottom: 8px;
    color: #555;
    line-height: 1.5;
}

.dialog-body p:last-child {
    margin-bottom: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .tab-buttons {
        overflow-x: auto;
    }
    
    .tab-button {
        padding: 10px 12px;
        font-size: 0.85rem;
    }
    
    .input-grid {
        grid-template-columns: 1fr;
    }
    
    .results-container {
        grid-template-columns: 1fr;
    }
    
    .input-container {
        grid-template-columns: 1fr;
    }
    
    .art-text {
        font-size: 2rem;
    }
    
    .canvas {
        max-width: 100%;
        height: auto;
    }
    
    .tool-results {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .art-section {
        flex-direction: column;
        text-align: center;
    }
    
    .medium-selection {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .import-export {
        flex-direction: column;
    }
    
    .import-export-button {
        width: 100%;
    }
}