/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
header {
    background-color: #2c3e50;
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logout-btn {
    color: #fff;
    text-decoration: none;
    padding: 5px 10px;
    background-color: #e74c3c;
    border-radius: 4px;
    font-size: 0.9rem;
}

/* 导航样式 */
nav {
    background-color: #34495e;
    padding: 10px 0;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 20px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav-links a:hover, .nav-links a.active {
    background-color: #2980b9;
}

/* 表单样式 */
.form-container {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin: 30px auto;
    max-width: 500px;
}

.form-title {
    text-align: center;
    margin-bottom: 25px;
    color: #2c3e50;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #34495e;
}

input, select, textarea {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

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

.btn {
    display: inline-block;
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

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

.btn-block {
    display: block;
    width: 100%;
}

/* 表格样式 */
.table-container {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
    margin: 30px 0;
}

table {
    width: 100%;
    border-collapse: collapse;
}

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

th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

tr:hover {
    background-color: #f8f9fa;
}

/* 上传区域样式 */
.upload-container {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin: 30px auto;
    max-width: 800px;
}

.upload-area {
    border: 2px dashed #ddd;
    border-radius: 6px;
    padding: 40px 20px;
    text-align: center;
    margin-bottom: 20px;
    transition: border-color 0.3s;
}

.upload-area:hover, .upload-area.dragover {
    border-color: #3498db;
}

.upload-icon {
    font-size: 48px;
    color: #999;
    margin-bottom: 15px;
}

.file-list {
    margin-top: 20px;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 10px;
    border: 1px solid #eee;
    border-radius: 4px;
    margin-bottom: 10px;
}

.file-name {
    flex: 1;
}

.file-size {
    color: #777;
    margin-right: 15px;
}

.file-remove {
    color: #e74c3c;
    cursor: pointer;
}

.upload-results {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.result-item {
    padding: 10px;
    margin-bottom: 10px;
    background-color: #f8f9fa;
    border-radius: 4px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .form-container, .upload-container {
        padding: 20px;
        margin: 20px 10px;
    }
    
    /* 表格响应式处理 */
    .table-container {
        overflow-x: auto;
    }
    
    th, td {
        padding: 8px 10px;
        font-size: 0.9rem;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
}

/* 消息提示样式 */
.message {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
    text-align: center;
}

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

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

/* 查询表单特殊样式 */
.query-form {
    max-width: 1000px;
}

.query-row {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
}

.query-group {
    flex: 1;
    min-width: 200px;
}