/**
 * 学印通全局样式
 * 现代企业设计：主色 #1677ff，浅青背景，白卡，圆角，subtle shadow。
 */

/* ---------- CSS 变量 ---------- */
:root {
    --primary: #1677ff;
    --primary-hover: #0958d9;
    --primary-light: #e6f4ff;
    --primary-lighter: #f0f7ff;

    --bg: #f0f7ff;
    --bg-gray: #f5f5f5;

    --text-main: #262626;
    --text-secondary: #595959;
    --text-muted: #8c8c8c;

    --border: #d9d9d9;
    --border-light: #f0f0f0;
    --divider: #e6f0ff;

    --success: #389e0d;
    --success-bg: #f6ffed;
    --success-border: #b7eb8f;
    --error: #cf1322;
    --error-bg: #fff1f0;
    --error-border: #ffccc7;
    --warning: #d48806;
    --warning-bg: #fffbe6;
    --warning-border: #ffe58f;
    --info: #0958d9;
    --info-bg: #e6f4ff;
    --info-border: #91caff;

    --radius-sm: 6px;
    --radius: 8px;
    --radius-lg: 10px;
    --radius-xl: 12px;
    --radius-2xl: 16px;

    --shadow-sm: 0 2px 8px rgba(22, 119, 255, 0.06);
    --shadow: 0 2px 10px rgba(22, 119, 255, 0.06);
    --shadow-md: 0 4px 16px rgba(22, 119, 255, 0.08);
    --shadow-lg: 0 8px 24px rgba(22, 119, 255, 0.12);
    --shadow-dropdown: 0 4px 16px rgba(0, 0, 0, 0.1);

    --navbar-height: 56px;
    --admin-sidebar-width: 240px;
    --workspace-sidebar-width: 220px;
}

/* ---------- 基础重置 ---------- */
* {
    box-sizing: border-box;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    background: var(--bg);
    color: var(--text-main);
    font-size: 14px;
    line-height: 1.5;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ---------- 通用组件 ---------- */

/* 卡片 */
.card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.card h2,
.card h3 {
    margin: 0 0 16px;
    font-size: 16px;
    color: var(--text-main);
}

/* 提示 */
.alert {
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 16px;
    border: 1px solid transparent;
}

.alert-success {
    background: var(--success-bg);
    border-color: var(--success-border);
    color: var(--success);
}

.alert-error,
.error {
    background: var(--error-bg);
    border-color: var(--error-border);
    color: var(--error);
}

.alert-warning {
    background: var(--warning-bg);
    border-color: var(--warning-border);
    color: var(--warning);
}

.success {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    color: var(--success);
    padding: 14px;
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 18px;
    word-break: break-all;
}

/* 按钮 */
.btn,
.btn-submit {
    display: inline-block;
    padding: 9px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    cursor: pointer;
    border: 1px solid transparent;
    background: var(--primary);
    color: #fff;
    line-height: 1.4;
    text-align: center;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.btn:hover,
.btn-submit:hover {
    background: var(--primary-hover);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

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

.btn-secondary,
.btn-default {
    background: #fff;
    color: var(--text-main);
    border-color: var(--border);
}

.btn-secondary:hover,
.btn-default:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #fff;
}

.btn-danger {
    background: #ff4d4f;
}

.btn-danger:hover {
    background: #cf1322;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 13px;
}

/* 表单 */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: var(--text-main);
    margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group input[type="email"],
.form-group input[type="file"],
.form-group textarea,
.form-group select,
input[type="text"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="email"],
select,
textarea {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    background: #fff;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus,
input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
}

input.invalid,
textarea.invalid,
select.invalid {
    border-color: var(--error);
    background: var(--error-bg);
}

.form-group textarea {
    resize: vertical;
    min-height: 90px;
}

.form-group .hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: flex-end;
    margin-bottom: 16px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 4px;
}

.toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.toggle input {
    width: auto;
}

/* 表格 */
table,
.asset-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

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

th {
    background: #fafafa;
    color: var(--text-secondary);
    font-weight: 500;
}

tr:hover td {
    background: #fafafa;
}

.checkbox-col {
    width: 40px;
    text-align: center;
}

/* 分页 */
.pagination {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    align-items: center;
}

.pagination a,
.pagination span {
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
}

.pagination a {
    background: #fff;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.pagination a:hover {
    border-color: var(--primary);
    color: var(--primary);
    text-decoration: none;
}

.pagination .current {
    background: var(--primary);
    color: #fff;
}

/* 标签 / 徽章 */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.badge-new { background: var(--primary-light); color: var(--primary-hover); }
.badge-learning { background: #fff7e6; color: #fa8c16; }
.badge-review { background: var(--error-bg); color: var(--error); }
.badge-mastered { background: var(--success-bg); color: var(--success); }
.badge-archived { background: var(--bg-gray); color: var(--text-muted); }

.tag,
.asset-tag {
    display: inline-block;
    padding: 2px 8px;
    background: var(--primary-lighter);
    color: var(--primary);
    border-radius: 12px;
    font-size: 12px;
    margin-right: 4px;
    margin-bottom: 4px;
}

.asset-tag {
    background: var(--bg-gray);
    color: var(--text-secondary);
    border-radius: 4px;
}

/* 空状态 */
.empty,
.empty-state {
    color: var(--text-muted);
    font-size: 14px;
    text-align: center;
    padding: 24px 0;
}

.empty-state {
    padding: 48px 20px;
}

/* ---------- 顶部导航 ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: #fff;
    border-bottom: 1px solid var(--divider);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.navbar-brand {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.navbar-brand:hover {
    text-decoration: none;
}

.search-form {
    flex: 1;
    max-width: 520px;
    margin: 0 24px;
    display: flex;
}

.search-form input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 14px;
    border-right: none;
}

.search-form input:focus {
    outline: none;
    border-color: var(--primary);
}

.search-form button {
    padding: 0 16px;
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #fff;
    border-radius: 0 var(--radius) var(--radius) 0;
    cursor: pointer;
    font-size: 14px;
}

.user-menu {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-link,
.back-link {
    font-size: 14px;
    color: var(--text-secondary);
}

.avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    user-select: none;
}

.dropdown {
    position: absolute;
    top: 44px;
    right: 0;
    min-width: 140px;
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow-dropdown);
    display: none;
    overflow: hidden;
}

.user-menu:hover .dropdown,
.user-menu:focus-within .dropdown {
    display: block;
}

.dropdown a {
    display: block;
    padding: 10px 14px;
    color: var(--text-main);
    font-size: 14px;
}

.dropdown a:hover {
    background: var(--primary-lighter);
    text-decoration: none;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--primary);
    cursor: pointer;
}

/* ---------- 工作台布局 ---------- */
.page-workspace .workspace {
    display: flex;
    padding-top: var(--navbar-height);
    min-height: 100vh;
}

.page-workspace .sidebar {
    width: var(--workspace-sidebar-width);
    background: #fff;
    border-right: 1px solid var(--divider);
    padding: 20px 16px;
    flex-shrink: 0;
}

.page-workspace .sidebar-section {
    margin-bottom: 24px;
}

.page-workspace .sidebar-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}

.page-workspace .sidebar-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.page-workspace .sidebar-list li a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
}

.page-workspace .sidebar-list li a:hover {
    background: var(--primary-lighter);
    color: var(--primary);
    text-decoration: none;
}

.page-workspace .sidebar-list li a.active {
    background: var(--primary-light);
    color: var(--primary-hover);
    font-weight: 500;
}

.page-workspace .sidebar-list .count {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg-gray);
    padding: 2px 6px;
    border-radius: 10px;
}

.page-workspace .sidebar-list a.active .count {
    background: #bae0ff;
    color: var(--primary-hover);
}

.page-workspace .main {
    flex: 1;
    padding: 24px;
    max-width: 1100px;
}

.section-title {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 14px;
    color: var(--text-main);
}

/* 待复习 */
.due-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.due-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--error-border);
    background: var(--error-bg);
}

.due-item.urgent {
    border-color: #ff4d4f;
    background: #fff2f0;
}

.due-item .due-title {
    font-weight: 500;
    color: var(--text-main);
}

.due-item .due-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.due-item .due-badge {
    font-size: 12px;
    font-weight: 600;
    color: var(--error);
    background: #fff;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

/* 资料库卡片 */
.asset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.asset-card {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s, transform 0.2s;
}

.asset-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.asset-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.asset-type {
    font-size: 12px;
    padding: 3px 8px;
    border-radius: 10px;
    background: var(--primary-light);
    color: var(--primary-hover);
    font-weight: 500;
}

.asset-status {
    font-size: 12px;
    color: var(--text-muted);
}

.asset-title {
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 8px;
    color: var(--text-main);
}

.asset-title a {
    color: inherit;
}

.asset-title a:hover {
    text-decoration: underline;
}

.asset-excerpt {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    flex: 1;
}

.asset-footer {
    margin-top: 12px;
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.asset-actions {
    margin-top: 12px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.asset-actions .btn-share {
    padding: 5px 10px;
    font-size: 12px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.asset-actions .btn-share:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* 试卷列表 */
.exam-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.exam-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    background: #fff;
}

.exam-title {
    font-weight: 500;
    color: var(--text-main);
}

.exam-meta {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* 快速添加浮动按钮 */
.fab {
    position: fixed;
    right: 28px;
    bottom: 28px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(22, 119, 255, 0.4);
    z-index: 90;
}

.fab:hover {
    background: var(--primary-hover);
}

/* 弹窗 */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 110;
    padding: 20px;
}

.modal-overlay.open {
    display: flex;
}

.modal {
    background: #fff;
    width: 100%;
    max-width: 520px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 16px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 22px;
    color: var(--text-muted);
    cursor: pointer;
}

.modal-body {
    padding: 20px;
}

/* ---------- 后台管理布局 ---------- */
.page-admin .admin-wrapper {
    display: flex;
    min-height: 100vh;
}

.page-admin .admin-sidebar {
    width: var(--admin-sidebar-width);
    background: #fff;
    border-right: 1px solid var(--divider);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 10;
}

.page-admin .admin-brand {
    padding: 20px;
    border-bottom: 1px solid var(--border-light);
}

.page-admin .admin-brand h1 {
    margin: 0;
    font-size: 20px;
    color: var(--primary);
}

.page-admin .admin-brand .role {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.page-admin .admin-sidebar-menu {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0;
}

.page-admin .menu-sections,
.page-admin .menu-items {
    list-style: none;
    margin: 0;
    padding: 0;
}

.page-admin .menu-section-title {
    padding: 8px 20px;
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.page-admin .menu-item a {
    display: block;
    padding: 10px 20px;
    color: var(--text-secondary);
    font-size: 14px;
    border-left: 3px solid transparent;
}

.page-admin .menu-item a:hover {
    background: var(--primary-lighter);
    color: var(--primary);
    text-decoration: none;
}

.page-admin .menu-item.active a {
    background: var(--primary-light);
    color: var(--primary-hover);
    border-left-color: var(--primary);
    font-weight: 500;
}

.page-admin .admin-user {
    padding: 16px 20px;
    border-top: 1px solid var(--border-light);
    font-size: 14px;
}

.page-admin .admin-user .username {
    font-weight: 500;
    color: var(--text-main);
}

.page-admin .admin-user a {
    font-size: 13px;
    color: var(--text-muted);
    margin-left: 8px;
}

.page-admin .admin-main {
    flex: 1;
    margin-left: var(--admin-sidebar-width);
    min-height: 100vh;
}

.page-admin .admin-header {
    background: #fff;
    padding: 16px 24px;
    border-bottom: 1px solid var(--divider);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 5;
}

.page-admin .admin-header h2 {
    margin: 0;
    font-size: 18px;
    color: var(--primary);
}

.page-admin .admin-content {
    padding: 24px;
}

.page-admin .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.page-admin .stat-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 16px;
    box-shadow: var(--shadow);
}

.page-admin .stat-card .value {
    font-size: 28px;
    font-weight: 600;
    color: var(--primary);
}

.page-admin .stat-card .label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.page-admin .filter-bar {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 16px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.page-admin .actions-bar {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

/* ---------- 认证页面 ---------- */
.auth-page body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
}

.auth-page .card {
    width: 100%;
    max-width: 420px;
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    margin: 0 auto;
}

.auth-page .card h1 {
    margin: 0 0 8px;
    font-size: 24px;
    color: var(--primary);
    text-align: center;
}

.auth-page .card .subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: 14px;
}

.auth-page .btn-submit {
    width: 100%;
    padding: 12px;
    font-size: 15px;
}

.auth-page .links {
    margin-top: 18px;
    text-align: center;
    font-size: 14px;
}

.auth-page .logout-card {
    max-width: 360px;
    padding: 32px;
    text-align: center;
}

.auth-page .logout-card h1 {
    margin: 0 0 12px;
    font-size: 20px;
}

.auth-page .logout-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
}

.auth-page .btn-link {
    display: inline-block;
    margin-top: 16px;
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
}

.auth-page .success code {
    display: block;
    margin-top: 8px;
    padding: 10px;
    background: #fff;
    border: 1px dashed var(--success-border);
    border-radius: var(--radius-sm);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 15px;
    color: #222;
}

/* 403 错误页 */
.page-403 body {
    background: linear-gradient(135deg, #e6fffb 0%, var(--primary-lighter) 100%);
}

.page-403 .error-card {
    background: #ffffff;
    border-radius: var(--radius-2xl);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    padding: 48px;
    max-width: 480px;
    width: 100%;
    text-align: center;
    margin: 0 auto;
}

.page-403 .error-code {
    font-size: 96px;
    font-weight: 700;
    line-height: 1;
    color: var(--primary);
    margin-bottom: 16px;
}

.page-403 .error-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.page-403 .error-message {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 32px;
}

.page-403 .error-actions a {
    display: inline-block;
    padding: 10px 24px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 500;
}

.page-403 .error-actions a + a {
    margin-left: 12px;
}

/* ---------- 个人中心 ---------- */
.page-profile .container {
    max-width: 720px;
    margin: 0 auto;
    padding: 80px 20px 40px;
}

.page-profile .page-title {
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 20px;
    color: var(--text-main);
}

.page-profile .info-row {
    display: flex;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-light);
}

.page-profile .info-row:last-child {
    border-bottom: none;
}

.page-profile .info-label {
    width: 120px;
    color: var(--text-muted);
    font-size: 14px;
}

.page-profile .info-value {
    flex: 1;
    font-size: 14px;
    color: var(--text-main);
}

.page-profile .readonly {
    background: var(--bg-gray);
    color: var(--text-secondary);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid #e8e8e8;
}

/* ---------- 试卷生成 ---------- */
.page-exam-generate .container {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 16px 48px;
}

.page-exam-generate .page-title {
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 20px;
    color: var(--primary);
}

.page-exam-generate .steps {
    display: flex;
    margin-bottom: 24px;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.page-exam-generate .step {
    flex: 1;
    padding: 14px;
    text-align: center;
    font-size: 14px;
    color: var(--text-muted);
    position: relative;
}

.page-exam-generate .step.active {
    background: var(--primary);
    color: #fff;
    font-weight: 500;
}

.page-exam-generate .toolbar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.page-exam-generate .toolbar input,
.page-exam-generate .toolbar select {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    min-width: 140px;
}

.page-exam-generate .asset-table tr:hover td {
    background: #f6ffed;
}

.page-exam-generate .selected-summary {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    color: var(--success);
    padding: 10px 14px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
}

.page-exam-generate .template-bar {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

/* ---------- 资产详情 / 公开分享 ---------- */
.page-view .container,
.page-pub-view .container {
    max-width: 860px;
    margin: 0 auto;
    padding: 80px 20px 40px;
}

.page-view .asset-header,
.page-pub-view .asset-header {
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 16px;
    margin-bottom: 20px;
}

.page-view .asset-title,
.page-pub-view .asset-title {
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 12px;
    color: var(--text-main);
}

.page-view .asset-meta,
.page-pub-view .asset-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
    font-size: 14px;
    color: var(--text-secondary);
}

.page-view .section,
.page-pub-view .section {
    margin-bottom: 24px;
}

.page-view .section:last-child,
.page-pub-view .section:last-child {
    margin-bottom: 0;
}

.page-view .section-label,
.page-pub-view .section-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    margin: 0 0 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.page-view .section-body,
.page-pub-view .section-body {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-main);
    white-space: pre-wrap;
    word-break: break-word;
}

.page-view .tag-list,
.page-pub-view .tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.page-view .attachments,
.page-pub-view .attachments {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.page-view .attachment-item,
.page-pub-view .attachment-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    background: #fafafa;
}

.page-view .actions {
    display: flex;
    gap: 10px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.page-view .share-box {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-top: 16px;
}

.page-view .share-box p {
    margin: 0 0 8px;
    font-size: 14px;
    color: var(--success);
}

.page-view .share-url {
    display: block;
    font-size: 14px;
    word-break: break-all;
    color: var(--primary);
}

.page-view .public-notice {
    background: var(--info-bg);
    border: 1px solid var(--info-border);
    color: var(--info);
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 16px;
}

.page-pub-view .public-badge {
    font-size: 13px;
    color: var(--primary-hover);
    background: var(--primary-light);
    padding: 4px 10px;
    border-radius: 4px;
}

.page-pub-view .readonly-hint {
    margin-top: 24px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

/* ---------- 打印预览页 ---------- */
.page-exam-print body {
    font-family: "Noto Serif SC", "SimSun", "STSong", serif;
}

/* ---------- 响应式布局 ---------- */
@media (max-width: 768px) {
    .navbar {
        padding: 0 12px;
    }

    .search-form {
        margin: 0 12px;
    }

    .mobile-menu-toggle {
        display: block;
    }

    /* 工作台 */
    .page-workspace .workspace {
        flex-direction: column;
    }

    .page-workspace .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--divider);
        display: none;
    }

    .page-workspace .sidebar.open {
        display: block;
    }

    .page-workspace .main {
        padding: 16px;
    }

    .asset-grid {
        grid-template-columns: 1fr;
    }

    /* 后台 */
    .page-admin .admin-sidebar {
        width: 100%;
        position: relative;
        display: none;
    }

    .page-admin .admin-sidebar.open {
        display: flex;
    }

    .page-admin .admin-main {
        margin-left: 0;
    }

    .page-admin .admin-wrapper {
        flex-direction: column;
    }

    .page-admin .admin-header {
        flex-wrap: wrap;
        gap: 10px;
    }

    .page-admin .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .page-admin .form-row {
        flex-direction: column;
        align-items: stretch;
    }

    /* 个人中心 / 详情 / 生成 */
    .page-profile .container,
    .page-view .container,
    .page-pub-view .container,
    .page-exam-generate .container {
        padding-top: 72px;
    }

    .page-profile .info-row {
        flex-direction: column;
    }

    .page-profile .info-label {
        width: auto;
        margin-bottom: 4px;
    }

    .form-row {
        flex-direction: column;
        align-items: stretch;
    }

    table {
        font-size: 13px;
    }

    th,
    td {
        padding: 10px 8px;
    }
}

@media (max-width: 480px) {
    .auth-page .card {
        padding: 28px 20px;
    }

    .page-admin .stats-grid {
        grid-template-columns: 1fr;
    }

    .page-view .asset-title,
    .page-pub-view .asset-title {
        font-size: 18px;
    }
}