/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
    height: 100%;
    margin: 0;
}

/* 页面包装器 */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
}

.container {
    width: 100%;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 */
header {
    background-color: #2c3e50;
    color: #fff;
    padding: 15px 0;
}

.logo h1 {
    font-size: 24px;
    margin: 0;
}

/* 导航栏样式 */
nav {
    margin-top: 15px;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav ul li {
    margin-right: 20px;
}

nav ul li:last-child {
    margin-right: 0;
    margin-left: auto;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

nav ul li a:hover {
    background-color: #34495e;
}

.user-info {
    display: flex;
    align-items: center;
}

.logout {
    margin-left: 15px;
    background-color: #e74c3c;
}

.logout:hover {
    background-color: #c0392b !important;
}

/* 主内容区域样式 */
main {
    padding: 20px 0;
    flex: 1 0 auto;
    min-height: 600px;
}

/* 卡片样式 */
.card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
}

.card h2 {
    margin-bottom: 20px;
    color: #2c3e50;
    font-size: 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 15px;
    background-color: #3498db;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 14px;
    transition: background-color 0.3s;
}

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

.btn-primary {
    background-color: #3498db;
}

.btn-success {
    background-color: #2ecc71;
}

.btn-danger {
    background-color: #e74c3c;
}

.btn-warning {
    background-color: #f39c12;
}

/* 表单样式 */
.form-group {
    margin-bottom: 15px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

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

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

table th,
table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

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

table tr:hover {
    background-color: #f5f5f5;
}

/* 消息通知样式 */
.message {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.message.info {
    background-color: #d9edf7;
    color: #31708f;
    border: 1px solid #bce8f1;
}

.message.success {
    background-color: #dff0d8;
    color: #3c763d;
    border: 1px solid #d6e9c6;
}

.message.error {
    background-color: #f2dede;
    color: #a94442;
    border: 1px solid #ebccd1;
}

.message.warning {
    background-color: #fcf8e3;
    color: #8a6d3b;
    border: 1px solid #faebcc;
}

.close-message {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: inherit;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 页脚样式 */
footer {
    background-color: #2c3e50;
    color: #fff;
    padding: 20px 0;
    text-align: center;
    width: 100%;
    margin-top: auto;
    position: relative;
    z-index: 10;
    flex-shrink: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
    }
    
    nav ul li {
        margin: 5px 0;
    }
    
    .user-info {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .logout {
        margin-left: 0;
        margin-top: 10px;
    }
}

/* 仪表板样式 */
.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.dashboard-card {
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.dashboard-card h3 {
    font-size: 16px;
    color: #7f8c8d;
    margin-bottom: 10px;
}

.dashboard-card .number {
    font-size: 32px;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
}

.dashboard-card .icon {
    font-size: 48px;
    margin-bottom: 15px;
    color: #3498db;
}

/* 图表容器样式 */
.chart-container {
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 登录和注册页面样式 */
.auth-container {
    width: 90%;
    max-width: none;
    margin: 50px auto;
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.auth-container h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #2c3e50;
}

.auth-links {
    text-align: center;
    margin-top: 20px;
}

.auth-links a {
    color: #3498db;
    text-decoration: none;
}

.auth-links a:hover {
    text-decoration: underline;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.pagination a {
    padding: 8px 12px;
    margin: 0 5px;
    border: 1px solid #ddd;
    text-decoration: none;
    color: #3498db;
    border-radius: 4px;
}

.pagination a.active {
    background-color: #3498db;
    color: #fff;
    border-color: #3498db;
}

.pagination a:hover:not(.active) {
    background-color: #f5f5f5;
}

/* 搜索框样式 */
.search-container {
    margin-bottom: 20px;
}

.search-container input {
    padding: 10px;
    width: 100%;
    max-width: 400px;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
}

.search-container button {
    padding: 10px 15px;
    background-color: #3498db;
    color: #fff;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
}

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

/* 筛选器样式 */
.filter-container {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
    align-items: center;
}

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

/* 操作按钮组样式 */
.action-buttons {
    display: flex;
    gap: 10px;
}

.action-buttons .btn {
    padding: 5px 10px;
    font-size: 12px;
}

/* 统计信息样式 */
.stats {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.stats p {
    margin: 5px 0;
}

/* 日期选择器样式 */
.date-picker {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 20px;
}

.date-picker input[type="date"] {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

/* 打印样式 */
@media print {
    header, nav, footer, .btn, .pagination, .search-container, .filter-container {
        display: none !important;
    }
    
    main {
        margin: 0;
        padding: 0;
    }
    
    .container {
        width: 100%;
        max-width: 100%;
    }
    
    table {
        page-break-inside: avoid;
    }
    
    thead {
        display: table-header-group;
    }
    
    tr {
        page-break-inside: avoid;
    }
}