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

body {
    font-family: Arial, "Microsoft YaHei", sans-serif;
    color: #333;
    line-height: 1.6;
    background-color: #f5f5f5;
}

/* 页面容器 */
.container {
    width: 80%;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    min-height: 100vh;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 20px;
    color: #333;
    text-align: center;
}

/* 链接样式 */
a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #004080;
}

/* 按钮样式 */
button, .btn {
    background-color: #0066cc;
    color: white;
    border: none;
    padding: 8px 16px;
    cursor: pointer;
    border-radius: 4px;
    font-size: 14px;
    transition: background-color 0.2s, transform 0.1s, box-shadow 0.2s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

button:hover, .btn:hover {
    background-color: #004080;
}

button:active, .btn:active {
    transform: scale(0.97);
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

/* 表单样式 */
form {
    width: 80%;
    margin: 0 auto;
    text-align: center;
}

/* 表单居中优化 */
.form-container {
    width: 80%;
    margin: 20px auto;
    text-align: center;
}

.form-container form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.form-container .form-group {
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.form-container .form-group label {
    margin-bottom: 5px;
    text-align: left;
}

.form-container .form-group input,
.form-container .form-group select,
.form-container .form-group textarea {
    width: 100%;
}

.form-group {
    display: flex;
    margin-bottom: 15px;
    align-items: center;
}

.form-group label {
    flex: 1;
    text-align: right;
    margin-right: 20px;
    font-weight: bold;
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    flex: 2;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.form-group input[type="radio"] {
    margin-right: 5px;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 14px;
}

th, td {
    padding: 12px;
    text-align: center;
    border: 1px solid #ddd;
    word-break: break-word;
}

th {
    background-color: #f2f2f2;
    font-weight: bold;
    cursor: pointer;
}

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

tr:hover {
    background-color: #f1f1f1;
}

/* 表格卡片式容器 */
.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 20px 0;
}

/* 卡片式显示样式 */
.card-container {
    display: none;
    flex-direction: column;
    gap: 15px;
}

.data-card {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 15px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card-row {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    border-bottom: 1px solid #f0f0f0;
}

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

.card-label {
    font-weight: bold;
    color: #666;
}

.card-value {
    color: #333;
}

/* 导航样式 */
.nav {
    background-color: #333;
    margin-bottom: 5px;
    border-radius: 4px;
    padding: 10px 0;
}

.nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.nav li {
    flex: 0 0 auto;
    margin: 5px;
}

.nav a {
    display: block;
    color: white;
    text-align: center;
    padding: 12px 16px;
    text-decoration: none;
    min-width: 40px;
    font-size: 16px;
    line-height: 1.4;
    transition: background-color 0.2s;
    border-radius: 4px;
}

.nav a:hover, .nav a:active {
    background-color: #555;
    color: white;
}

/* 隐藏下拉按钮 */
.nav-dropdown {
    display: none;
}

/* 移动设备适配 */
@media screen and (max-width: 768px) {
    /* 调整容器宽度为100%以适应小屏幕 */
    .container {
        width: 100%;
        margin: 0;
        padding: 10px;
    }
    
    /* 导航样式 - 与电脑端保持相同结构，只调整比例和字体大小 */
    .nav {
        background-color: #333;
        padding: 8px 0;
        margin-bottom: 5px;
        border-radius: 4px;
    }
    
    .nav ul {
        list-style: none;
        margin: 0;
        padding: 0 5px;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav li {
        flex: 0 0 auto;
        margin: 3px;
    }
    
    .nav a {
        display: block;
        color: white;
        text-align: center;
        padding: 10px 12px;
        text-decoration: none;
        min-width: 35px;
        font-size: 14px;
        line-height: 1.4;
        transition: background-color 0.2s;
        border-radius: 3px;
    }
    
    .nav a:hover, .nav a:active {
        background-color: #555;
        color: white;
    }
    
    /* 确保内容区域正常显示 */
    .content {
        margin-top: 10px;
    }

/* 搜索框样式 */
.search-container {
    margin: 20px auto;
    text-align: center;
    width: 80%;
    max-width: 600px;
}

.search-container form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.search-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.search-container input[type="text"] {
    padding: 10px 15px;
    width: 70%;
    border: 1px solid #ddd;
    border-radius: 25px;
    font-size: 14px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.search-container input[type="text"]:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 5px rgba(0, 102, 204, 0.3);
}

.search-container button {
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: bold;
    min-width: 80px;
}

.search-container .btn {
    background-color: #6c757d;
    text-decoration: none;
    display: inline-block;
}

.search-container .btn:hover {
    background-color: #5a6268;
}

/* 分页样式 */
.pagination {
    margin: 20px auto;
    text-align: center;
    width: 80%;
    max-width: 400px;
}

.pagination select {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

/* 通用居中样式 */
.center-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    margin: 20px auto;
    width: 80%;
    max-width: 800px;
    text-align: center;
}

/* 统计信息样式 */
.stats {
    margin: 20px auto;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
    text-align: center;
    width: 80%;
    max-width: 800px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.stats form {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.stats input[type="text"] {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 20px;
    font-size: 14px;
    width: 120px;
}

.stats button {
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: bold;
}

.stats p {
    margin: 10px 0;
    font-size: 16px;
    color: #333;
    line-height: 1.5;
}

/* 手机响应式设计 */
@media screen and (max-width: 768px) {
    .container {
        width: 95%;
        padding: 10px;
    }
    
    /* 通用居中容器在移动设备上的样式 */
    .center-container {
        width: 95%;
        padding: 10px;
    }
    
    /* 统计信息在移动设备上的样式 */
    .stats {
        width: 95%;
        padding: 15px;
        margin: 15px auto;
    }
    
    .stats form {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .stats input[type="text"] {
        width: 80%;
        margin-bottom: 5px;
    }
    
    /* 搜索框在移动设备上的样式 */
    .search-container {
        width: 95%;
        margin: 15px auto;
    }
    
    .search-container form {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .search-container input[type="text"] {
        width: 80%;
    }

    /* 修改导航菜单在移动设备上的显示 */
    .nav {
        background-color: #333;
        padding: 8px 0;
        margin-bottom: 5px;
        border-radius: 4px;
    }
    
    .nav ul {
        list-style: none;
        margin: 0;
        padding: 0 5px;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav li {
        flex: 0 0 auto;
        margin: 3px;
    }
    
    .nav a {
        display: block;
        color: white;
        text-align: center;
        padding: 10px 12px;
        text-decoration: none;
        min-width: 35px;
        font-size: 16px; /* 增大字体，提高可读性 */
        line-height: 1.4;
        transition: background-color 0.2s;
        border-radius: 3px;
    }
    
    .nav a:hover, .nav a:active {
        background-color: #555;
        color: white;
    }

    form {
        width: 100%;
    }

    .form-group {
        flex-direction: column;
        align-items: flex-start;
    }

    .form-group label {
        text-align: left;
        margin-right: 0;
        margin-bottom: 5px;
    }

    .form-group input[type="text"],
    .form-group input[type="date"],
    .form-group input[type="number"],
    .form-group select,
    .form-group textarea {
        width: 100%;
        padding: 10px;
    }

    /* 表格在手机端优化 */
    .table-container {
        display: none;
    }

    .card-container {
        display: flex;
    }

    .search-container input[type="text"] {
        width: 90%;
        padding: 10px;
    }

    /* 增大触控区域 */
    button, .btn {
        padding: 12px 20px;
        font-size: 16px;
        min-height: 44px;
    }

    /* 增大链接点击区域 */
    a {
        min-height: 44px;
        display: inline-block;
        line-height: 44px;
    }
}

/* 排行榜样式 */
.ranking {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin: 20px 0;
}

.rank-item {
    width: 30%;
    margin-bottom: 20px;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 4px;
}

.rank-item h3 {
    text-align: center;
    margin-bottom: 15px;
}

.rank-item ol {
    padding-left: 20px;
}

.rank-item li {
    margin-bottom: 10px;
}

@media screen and (max-width: 768px) {
    .ranking {
        flex-direction: column;
    }

    .rank-item {
        width: 100%;
    }
}

/* 登录页面样式 */
.login-container {
    width: 400px;
    margin: 100px auto;
    padding: 30px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

@media screen and (max-width: 768px) {
    .login-container {
        width: 90%;
        margin: 50px auto;
    }
}

/* 导入数据页面样式 */
.upload-section {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    text-align: center;
}

.upload-section h3 {
    margin-top: 0;
    color: #333;
}

.upload-section p {
    margin: 10px 0;
    color: #666;
    font-size: 14px;
}

.upload-section form {
    margin-top: 15px;
    text-align: center;
}

.upload-section input[type="file"] {
    margin-bottom: 10px;
    width: 100%;
    max-width: 300px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.upload-section input[type="submit"] {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.upload-section input[type="submit"]:hover {
    background-color: #45a049;
}

/* 消息提示样式 */
.message {
    padding: 15px;
    margin: 15px 0;
    border-radius: 4px;
    text-align: center;
    font-weight: bold;
}

.message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    body {
        background-color: #000;
        color: #fff;
    }
    
    .container {
        background-color: #111;
        border: 2px solid #fff;
    }
    
    .nav {
        background-color: #000;
        border: 2px solid #fff;
    }
    
    .nav a {
        color: #fff;
        border: 1px solid #fff;
    }
    
    .nav a:hover, .nav a:active {
        background-color: #fff;
        color: #000;
    }
    
    button, .btn {
        background-color: #fff;
        color: #000;
        border: 2px solid #000;
    }
    
    button:hover, .btn:hover {
        background-color: #000;
        color: #fff;
    }
    
    table {
        border: 2px solid #fff;
    }
    
    th, td {
        border: 1px solid #fff;
    }
    
    th {
        background-color: #333;
        color: #fff;
    }
    
    tr:nth-child(even) {
        background-color: #222;
    }
}

/* 大字体支持 */
@media (prefers-font-size-adjust: larger) {
    body {
        font-size: 18px;
    }
    
    h1, h2, h3 {
        font-size: 1.8em;
    }
    
    button, .btn {
        font-size: 18px;
    }
    
    input, select, textarea {
        font-size: 18px;
    }
}