/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    background-color: #f5f5f5;
    display: flex;
    min-height: 100vh;
}

/* 侧边菜单样式 */
.sidebar {
    width: 220px;
    background-color: #2c3e50;
    color: #fff;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
}

.sidebar-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid #34495e;
}

.sidebar-header h1 {
    font-size: 18px;
    margin-bottom: 5px;
}

.sidebar-nav {
    padding: 20px 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 2px;
}

.sidebar-nav a {
    display: block;
    padding: 12px 20px;
    color: #ecf0f1;
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover, .sidebar-nav a.active {
    background-color: #34495e;
    border-left-color: #3498db;
}

.sidebar-nav a.active {
    font-weight: bold;
}

.sidebar-nav i {
    margin-right: 10px;
}

/* 主内容区域样式 */
.main-content {
    flex: 1;
    margin-left: 220px;
    padding: 20px;
    background-color: #fff;
    min-height: 100vh;
}

.content-header {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.content-header h2 {
    font-size: 24px;
    color: #2c3e50;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    background-color: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

thead {
    background-color: #f8f9fa;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

th {
    font-weight: 600;
    color: #495057;
}

tbody tr:hover {
    background-color: #f1f4f7;
}

/* 按钮样式 */
button {
    cursor: pointer;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    background-color: #3498db;
    color: white;
    font-size: 14px;
    transition: background-color 0.3s;
}

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

.action-btn {
    padding: 6px 12px;
    margin-right: 5px;
    font-size: 12px;
}

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

.delete-btn:hover {
    background-color: #c0392b;
}

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

.edit-btn:hover {
    background-color: #27ae60;
}

/* 表单样式 */
.form-section {
    background-color: #fff;
    padding: 20px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.form-section h2 {
    margin-bottom: 20px;
    color: #2c3e50;
}

form div {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #555;
}

input[type="text"], textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

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

form button {
    margin-right: 10px;
}

/* 功能区域 */
.actions-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .main-content {
        margin-left: 0;
    }
}