/* 全局样式 */
:root {
    --primary-color: #409eff;
    --success-color: #67c23a;
    --warning-color: #e6a23c;
    --danger-color: #f56c6c;
    --info-color: #909399;
    --background-color: #f5f7fa;
    --card-background: #ffffff;
    --text-primary: #303133;
    --text-regular: #606266;
    --text-secondary: #909399;
    --border-color: #dcdfe6;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
}

/* 登录页面样式 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.login-title {
    text-align: center;
    margin-bottom: 30px;
    color: var(--text-primary);
    font-size: 24px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-regular);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(64, 158, 255, 0.2);
}

.login-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.login-btn:hover {
    background-color: #337ecc;
}

.login-btn:disabled {
    background-color: #a0cfff;
    cursor: not-allowed;
}

/* 主布局 */
.main-container {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
    width: 240px;
    background: linear-gradient(180deg, #1d1e1f 0%, #2d2d2d 100%);
    color: white;
    padding: 20px 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 20px;
}

.sidebar-header h2 {
    font-size: 18px;
    margin-bottom: 5px;
}

.sidebar-header p {
    font-size: 12px;
    opacity: 0.7;
}

.menu-list {
    list-style: none;
}

.menu-item {
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    border-left: 3px solid transparent;
}

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

.menu-item.active {
    background: rgba(64, 158, 255, 0.2);
    border-left-color: var(--primary-color);
    color: var(--primary-color);
}

.menu-item i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

/* 内容区域 */
.content {
    flex: 1;
    margin-left: 240px;
    padding: 20px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 24px;
    color: var(--text-primary);
}

/* 卡片样式 */
.card {
    background: var(--card-background);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
}

/* 按钮样式 */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: #337ecc;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: #529b2e;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background-color: #cf9236;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #c45656;
}

.btn-info {
    background-color: var(--info-color);
    color: white;
}

.btn-info:hover {
    background-color: #73767a;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* 表格样式 */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: #f5f7fa;
    font-weight: 600;
    color: var(--text-primary);
}

tr:hover {
    background-color: #f5f7fa;
}

/* 状态标签 */
.status-tag {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.status-active {
    background-color: #e1f3d8;
    color: #67c23a;
}

.status-inactive {
    background-color: #fde2e2;
    color: #f56c6c;
}

/* 表单样式 */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-regular);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(64, 158, 255, 0.2);
}

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

/* 模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: 8px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(-20px);
    transition: transform 0.3s;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* 提示信息 */
.alert {
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-success {
    background-color: #f0f9eb;
    color: #67c23a;
    border: 1px solid #e1f3d8;
}

.alert-error {
    background-color: #fef0f0;
    color: #f56c6c;
    border: 1px solid #fde2e2;
}

.alert-warning {
    background-color: #fdf6ec;
    color: #e6a23c;
    border: 1px solid #faecd8;
}

.alert-info {
    background-color: #f4f4f5;
    color: #909399;
    border: 1px solid #e9e9eb;
}

/* 加载状态 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 20px;
    opacity: 0.5;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .content {
        margin-left: 0;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        gap: 10px;
    }
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.pagination button {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 4px;
    cursor: pointer;
}

.pagination button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 搜索框 */
.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.search-box input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
}

/* 标签页 */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.tab {
    padding: 10px 20px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}

.tab:hover {
    color: var(--primary-color);
}

.tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

/* 工具提示 */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    z-index: 1001;
}

/* 头像 */
.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.avatar-lg {
    width: 64px;
    height: 64px;
}

/* 头像加载失败或未设置时的首字母回退头像 */
.avatar-fallback {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
    user-select: none;
}

/* 信息列表 */
.info-list {
    list-style: none;
}

.info-item {
    display: flex;
    margin-bottom: 10px;
}

.info-label {
    width: 120px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.info-value {
    flex: 1;
}

/* 操作按钮组 */
.action-buttons {
    display: flex;
    gap: 5px;
}

/* 标题栏 */
.title-bar {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 网格布局 */
.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* 项目卡片 */
.project-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-card h3 {
    margin-bottom: 10px;
    color: var(--text-primary);
}

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-secondary);
}

/* 表单中的字段名标注 */
.form-group label em {
    font-style: normal;
    font-size: 12px;
    color: var(--text-secondary);
    font-family: Consolas, Monaco, monospace;
    margin-left: 4px;
}

.form-group label em {
    /* 必填标记在字段名后显示 *，这里保持透传 */
    font-weight: 400;
}

/* 表单分节标题 */
.form-section-title {
    margin: 10px 0 15px;
    padding-bottom: 8px;
    border-bottom: 1px dashed var(--border-color);
    color: var(--primary-color);
    font-size: 15px;
}

.form-section-title:first-child {
    margin-top: 0;
}

/* 复选框项 */
.checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    color: var(--text-regular);
    font-size: 14px;
}

.checkbox-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    margin: 0;
}

/* 表格表头中的字段名标注 */
th small,
td small {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 11px;
    font-family: Consolas, Monaco, monospace;
}

/* 表头字段名（后端字段名）样式微调 */
th small {
    display: inline-block;
    margin-top: 2px;
}

/* 用户信息徽标 */
.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
}

/* 统计卡片 */
.stat-item {
    text-align: center;
    padding: 16px;
}

.stat-value {
    font-size: 34px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 13px;
}

/* 链接样式 */
a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-thumb {
    background: #c0c4cc;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #909399;
}

::-webkit-scrollbar-track {
    background: transparent;
}

/* 侧边栏底部区域固定在底部 */
.sidebar {
    display: flex;
    flex-direction: column;
}

.sidebar .menu-list {
    flex: 1;
    overflow-y: auto;
}

.sidebar > div:last-child {
    margin-top: auto;
}

/* 模态框内部表单的 footer 不重复 padding */
.modal-body .modal-footer {
    padding: 16px 0 0;
    border-top: 1px solid var(--border-color);
    margin-top: 10px;
}

/* 表格在模态框内滚动容器 */
.table-container table {
    min-width: 100%;
}

/* 细小的操作按钮组 */
.action-buttons .btn-sm {
    white-space: nowrap;
}