/* 及简乐享 Demo - 移动端适配样式 */

/* ===== 移动端底部导航栏 ===== */
.mobile-tabbar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  z-index: 150;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.06);
}

.mobile-tabbar-inner {
  display: flex;
  height: 100%;
}

.mobile-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 10px;
  font-family: inherit;
  transition: color 0.2s;
  padding: 0;
  position: relative;
}

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

.mobile-tab-icon {
  font-size: 20px;
  line-height: 1;
}

.mobile-tab-label {
  font-size: 10px;
  line-height: 1;
  white-space: nowrap;
}

/* 更多菜单弹出 */
.mobile-more-menu {
  display: none;
  position: fixed;
  bottom: 56px;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  box-shadow: 0 -4px 16px rgba(0,0,0,0.12);
  z-index: 149;
  padding: 16px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  animation: slideUp 0.25s ease;
}

.mobile-more-menu.show {
  display: block;
}

@keyframes slideUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.mobile-more-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.mobile-more-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 4px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s;
  background: none;
  border: none;
  font-family: inherit;
  color: var(--text-primary);
}

.mobile-more-item:hover,
.mobile-more-item:active {
  background: var(--bg-hover);
}

.mobile-more-item.active {
  color: var(--primary-color);
  background: var(--primary-light);
}

.mobile-more-icon {
  font-size: 24px;
}

.mobile-more-label {
  font-size: 12px;
}

.mobile-more-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 148;
}

.mobile-more-overlay.show {
  display: block;
}

/* 侧边栏移动端遮罩 */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 199;
}

/* ===== 移动端媒体查询 ===== */
@media (max-width: 768px) {
  /* 显示底部导航，隐藏侧边栏 */
  .mobile-tabbar {
    display: block;
  }

  .sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    bottom: 0;
    width: 260px;
    min-width: 260px;
    z-index: 200;
    transition: left 0.3s ease;
  }

  .sidebar.open {
    left: 0;
  }

  .sidebar.open + .sidebar-overlay,
  .sidebar-overlay.show {
    display: block;
  }

  .sidebar-toggle {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    flex-shrink: 0;
  }

  /* 顶部栏优化 */
  .topbar {
    padding: 0 12px;
    gap: 8px;
    height: 48px;
    min-height: 48px;
  }

  .search-bar {
    flex: 1;
    max-width: none;
  }

  .search-bar input {
    padding: 6px 10px;
    font-size: 13px;
  }

  .search-btn {
    padding: 6px 12px;
    font-size: 13px;
  }

  .topbar-actions {
    gap: 4px;
  }

  .btn-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .badge {
    min-width: 16px;
    height: 16px;
    font-size: 10px;
    top: -2px;
    right: -2px;
  }

  /* 页面容器 - 底部留出 tabbar 空间 */
  .page-container {
    padding-bottom: 56px;
  }

  .page {
    padding: 16px 12px;
  }

  .page-header {
    margin-bottom: 16px;
  }

  .page-header h1 {
    font-size: 20px;
  }

  .page-desc {
    font-size: 13px;
  }

  /* 通知面板 */
  .notification-panel {
    width: calc(100vw - 16px);
    right: 8px;
    max-height: 70vh;
    top: 48px;
  }

  /* 模态框全屏 */
  .modal-content {
    width: 100%;
    max-width: 100%;
    max-height: 100vh;
    height: 100vh;
    border-radius: 0;
    margin: 0;
  }

  .modal-content.large,
  .modal-content.medium {
    max-width: 100%;
  }

  .modal-overlay {
    align-items: stretch;
  }

  .modal-header {
    border-radius: 0;
    padding: 14px 16px;
  }

  .modal-body {
    padding: 16px;
  }

  /* Toast */
  .toast-container {
    top: auto;
    bottom: 70px;
    right: 12px;
    left: 12px;
  }

  .toast {
    width: 100%;
  }

  /* ===== 工具栏 ===== */
  .toolbar {
    flex-direction: column;
    gap: 10px;
    margin-bottom: 14px;
  }

  .toolbar-left {
    width: 100%;
  }

  .toolbar-right {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .search-box {
    max-width: none;
  }

  /* 标签栏 */
  .tab-bar {
    margin-bottom: 14px;
    gap: 2px;
    padding: 3px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .tab-btn {
    padding: 6px 12px;
    font-size: 13px;
  }

  /* 按钮 */
  .btn {
    padding: 7px 14px;
    font-size: 13px;
  }

  .btn-lg {
    padding: 10px 20px;
    font-size: 15px;
    width: 100%;
  }

  /* 表单 */
  .form-row {
    flex-direction: column;
    gap: 12px;
  }

  .form-actions {
    flex-direction: column;
  }

  .form-actions .btn {
    width: 100%;
  }

  /* 统计卡片 */
  .stat-card {
    padding: 14px 16px;
  }

  .stat-icon {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  .stat-value {
    font-size: 18px;
  }

  /* ===== 首页 ===== */
  .welcome-banner {
    padding: 20px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
  }

  .welcome-text h1 {
    font-size: 20px;
    color: #fff;
  }

  .welcome-text p {
    margin-bottom: 14px;
  }

  .welcome-stats {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .welcome-stats .stat-card {
    padding: 12px;
  }

  .welcome-stats .stat-value {
    font-size: 18px;
  }

  .home-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .home-section {
    padding: 14px;
    border-radius: var(--radius-md);
  }

  .section-header {
    margin-bottom: 12px;
  }

  .section-header h2 {
    font-size: 15px;
  }

  /* 场景网格移动端 */
  .scenario-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .scenario-card {
    padding: 14px 8px;
  }

  .scenario-icon {
    font-size: 26px;
  }

  .scenario-name {
    font-size: 12px;
  }

  .scenario-desc {
    display: none;
  }

  /* 直播迷你卡 */
  .live-cards {
    flex-direction: column;
  }

  .live-card-mini {
    min-width: 0;
  }

  /* ===== 文档页 ===== */
  .docs-layout {
    flex-direction: column;
  }

  .docs-sidebar {
    width: 100%;
    order: 2;
  }

  .docs-main {
    order: 1;
  }

  /* 移动端：默认折叠分类，显示为横向滚动 */
  .category-list {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 0;
    border-radius: var(--radius-sm);
  }

  .category-item {
    white-space: nowrap;
    padding: 8px 14px;
    font-size: 13px;
    border-left: none;
    border-bottom: 2px solid transparent;
    flex-shrink: 0;
  }

  .category-item.active {
    border-bottom-color: var(--primary-color);
    border-left: none;
  }

  .category-count {
    display: none;
  }

  .docs-sidebar-info {
    display: none;
  }

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

  .doc-card {
    padding: 14px;
  }

  /* 文档详情 */
  .doc-actions {
    flex-wrap: wrap;
  }

  .doc-actions .btn {
    flex: 1;
    min-width: calc(50% - 5px);
  }

  /* ===== 乐问页 ===== */
  .qa-layout {
    flex-direction: column;
  }

  .qa-sidebar {
    width: 100%;
    display: flex;
    gap: 14px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .sidebar-card {
    min-width: 240px;
    flex-shrink: 0;
  }

  .qa-item {
    padding: 12px 14px;
  }

  .qa-item-title {
    font-size: 14px;
  }

  .qa-item-right {
    display: none;
  }

  /* ===== 课程页 ===== */
  .course-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .course-cover {
    height: 100px;
    font-size: 36px;
  }

  .course-info {
    padding: 12px;
  }

  .course-title {
    font-size: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .course-instructor {
    font-size: 12px;
  }

  .course-meta {
    font-size: 11px;
    gap: 6px;
  }

  /* 课程详情 */
  .course-detail-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .course-detail-cover {
    width: 80px;
    height: 80px;
    font-size: 40px;
  }

  .course-detail-meta {
    justify-content: center;
  }

  .course-detail-tags {
    justify-content: center;
  }

  .course-detail-actions {
    flex-direction: column;
  }

  .course-features .feature-cards {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }

  .course-features .feature-card {
    flex-shrink: 0;
  }

  /* ===== 考试页 ===== */
  .exam-stats-row {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .exam-cards {
    grid-template-columns: 1fr;
  }

  .exam-card {
    padding: 16px;
  }

  .exam-card-info {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .exam-card-actions {
    flex-direction: column;
  }

  .exam-card-actions .btn {
    width: 100%;
  }

  /* 考试答题 */
  .exam-taking {
    padding: 12px !important;
  }

  .exam-taking-header {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }

  .timer {
    font-size: 18px;
  }

  .question-card {
    padding: 16px;
  }

  .question-text {
    font-size: 15px;
  }

  .option-item {
    padding: 12px;
  }

  .exam-nav {
    flex-direction: column;
    gap: 12px;
  }

  .question-dots {
    order: -1;
  }

  .q-dot {
    width: 24px;
    height: 24px;
    font-size: 10px;
  }

  /* 考试结果 */
  .result-score {
    font-size: 48px;
  }

  /* ===== 学习地图 ===== */
  .map-features-bar {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    gap: 8px;
    padding-bottom: 4px;
  }

  .feature-tag {
    flex-shrink: 0;
    font-size: 12px;
    padding: 4px 10px;
  }

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

  .map-card-visual {
    height: 140px;
    padding: 14px;
  }

  .game-node .node-number {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .map-card-info {
    padding: 14px;
  }

  .map-role-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    flex-wrap: wrap;
  }

  .role-card {
    padding: 12px 16px;
  }

  /* 地图详情 */
  .stages-timeline {
    padding-left: 10px;
  }

  .stage-number {
    width: 30px;
    height: 30px;
    font-size: 13px;
  }

  .stage-header {
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
  }

  /* ===== 活动页 ===== */
  .activity-grid {
    grid-template-columns: 1fr;
  }

  .activity-card-top {
    flex-direction: column;
    gap: 12px;
    padding: 16px;
  }

  .activity-date-display {
    width: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    align-self: flex-start;
  }

  .date-d {
    font-size: 18px;
  }

  .activity-card-bottom {
    flex-direction: column;
    gap: 10px;
    padding: 12px 16px;
  }

  .enroll-info {
    width: 100%;
  }

  .activity-actions {
    width: 100%;
  }

  .activity-actions .btn {
    flex: 1;
  }

  /* 活动详情 */
  .attendee-list {
    max-height: 150px;
  }

  .detail-actions {
    flex-direction: column;
  }

  .detail-actions .btn {
    width: 100%;
  }

  .activity-features .feature-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  /* ===== 投票页 ===== */
  .vote-grid {
    grid-template-columns: 1fr;
  }

  .vote-card {
    padding: 16px;
  }

  .vote-card-meta {
    flex-direction: column;
    gap: 4px;
  }

  /* ===== 论坛页 ===== */
  .forum-table-header {
    display: none;
  }

  .forum-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 14px;
  }

  .col-title {
    font-size: 14px;
    font-weight: 500;
    order: 1;
  }

  .col-author {
    display: inline;
    order: 2;
  }

  .col-date {
    display: inline;
    order: 3;
  }

  .col-stats {
    display: inline;
    order: 4;
  }

  .forum-row .col-author,
  .forum-row .col-date,
  .forum-row .col-stats {
    display: inline;
    font-size: 12px;
  }

  /* 论坛移动端显示meta行 */
  .forum-row::after {
    content: '';
    display: none;
  }

  .forum-features .feature-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  /* 帖子详情 */
  .post-actions-bar {
    flex-wrap: wrap;
    gap: 6px;
  }

  .reply-toolbar {
    flex-wrap: wrap;
  }

  /* ===== 直播页 ===== */
  .live-main-card {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .live-player {
    height: 220px;
  }

  .live-chat-panel {
    border-left: none;
    border-top: 1px solid var(--border-color);
    max-height: 300px;
  }

  .chat-messages {
    max-height: 180px;
  }

  .live-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .live-card .btn {
    width: 100%;
  }

  .live-features .feature-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  /* ===== 证书页 ===== */
  .cert-stats {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

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

  .cert-preview {
    padding: 16px;
  }

  .cert-border {
    padding: 16px;
  }

  .cert-holder {
    font-size: 16px;
  }

  /* 证书详情 */
  .cert-full {
    padding: 16px;
  }

  .cert-full-border {
    padding: 20px;
  }

  .cert-full-title {
    font-size: 18px;
  }

  .cert-full-holder {
    font-size: 24px;
  }

  .cert-full-footer {
    flex-direction: column;
    gap: 4px;
    align-items: center;
  }

  .cert-detail-actions {
    flex-direction: column;
  }

  .cert-detail-actions .btn {
    width: 100%;
  }

  /* ===== 管理后台 ===== */
  .admin-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    gap: 0;
  }

  .admin-tab {
    padding: 8px 14px;
    font-size: 13px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .admin-stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .admin-charts-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .admin-chart-card {
    padding: 14px;
    margin-bottom: 14px;
  }

  /* 管理后台表格 */
  .data-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .data-table th,
  .data-table td {
    padding: 8px 10px;
    font-size: 12px;
    white-space: nowrap;
  }

  /* 设置 */
  .setting-item {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }

  .learning-overview {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  /* 柱状图移动端 */
  .bar-chart-bars {
    gap: 4px;
    padding: 16px 0 20px;
  }

  .bar-value {
    font-size: 10px;
  }

  .bar-label {
    font-size: 10px;
  }

  .bar {
    max-width: 32px;
  }

  /* 内容分布 */
  .dist-label {
    width: 40px;
    font-size: 12px;
  }

  .dist-value {
    width: 40px;
    font-size: 12px;
  }
}

/* 极小屏幕适配 (iPhone SE 等) */
@media (max-width: 375px) {
  .welcome-stats {
    grid-template-columns: 1fr;
  }

  .scenario-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

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

  .exam-stats-row {
    grid-template-columns: 1fr;
  }

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

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

  .learning-overview {
    grid-template-columns: 1fr;
  }

  .mobile-more-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .activity-features .feature-cards,
  .forum-features .feature-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}