/**
 * ==========================================
 * style.css - 核心样式文件（升级版 v5）
 * 左侧导航 + 连续滚动 + 视频导航 + Monaco Editor
 * Style 0: 经典图标网格
 * Style 2: 缤纷模式（列表详情 + 用户自定义背景色）
 * ==========================================
 */

/* ==================== CSS 变量定义 ==================== */
:root {
    /* 统一毛玻璃背景及透明度（常规/沉浸模式同步复用，黑暗模式高透设计） */
    --glass-bg: rgba(0, 0, 0, 0.2);
    --glass: var(--glass-bg);
    --glass-hover: rgba(0, 0, 0, 0.35);
    --glass-border: rgba(255, 255, 255, 0.08);

    /* 文字颜色 */
    --text: #ffffff;
    --text-dim: rgba(255, 255, 255, 0.85);

    /* 主题色 */
    --primary: #399dff;

    /* 圆角与尺寸 */
    --radius: 15px;
    --card-w: 105px;
    --card-h: 105px;

    /* 背景遮罩透明度 */
    --bg-overlay-opacity: 0.4;

    /* 网站卡片图标尺寸 */
    --icon-size: 32px;
    --emoji-size: 32px;

    /* 侧边栏尺寸 */
    --sidebar-width: 250px;
    --sidebar-mini-width: 72px;
    --sidebar-transition: 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

/* ==================== 亮色模式 ==================== */
body.light-theme {
    /* 统一亮色毛玻璃背景及透明度（常规/沉浸模式同步复用，明亮模式高透设计） */
    --glass-bg: rgba(255, 255, 255, 0.45);
    --glass: var(--glass-bg);
    --glass-hover: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(0, 0, 0, 0.06);
    --text: #2c3e50;
    --text-dim: rgba(44, 62, 80, 0.7);
    --bg-overlay-opacity: 0.25;
}

body.light-theme {
    background-color: #f0f4f8; /* 仅作为背景图未加载时的底色 */
    background-image: none;    /* 移除强制渐变，防止干扰 JS 注入的背景图 */
}

body.light-theme::before {
    background: rgba(240, 243, 248, var(--bg-overlay-opacity));
}

body.light-theme .sidebar {
    background: var(--glass-bg);
    border-color: rgba(0, 0, 0, 0.06);
}

body.light-theme .sidebar-nav-item {
    color: #5a6a7a;
}

body.light-theme .sidebar-nav-item.active {
    background: var(--primary);
    color: white;
}

body.light-theme .sidebar-nav-item:hover:not(.active) {
    background: rgba(0, 0, 0, 0.05);
}

body.light-theme .tab-btn {
    color: #3d4f5f;
    border-color: rgba(0, 0, 0, 0.08);
    background: rgba(255, 255, 255, 0.5);
}

body.light-theme .tab-btn.active {
    background: var(--primary);
    color: white;
}

body.light-theme .card {
    background: var(--glass);
}

body.light-theme .card:hover {
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 0 12px rgba(57, 157, 255, 0.2), 0 2px 8px rgba(0, 0, 0, 0.08);
}

body.light-theme .card h3 {
    color: #3d4f5f;
}

body.light-theme .modal-content {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(0, 0, 0, 0.08);
}

body.light-theme input,
body.light-theme select,
body.light-theme textarea {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(0, 0, 0, 0.1);
    color: #3d4f5f;
}

body.light-theme input::placeholder,
body.light-theme textarea::placeholder {
    color: rgba(0, 0, 0, 0.3);
}

body.light-theme .admin-actions {
    background: rgba(255, 255, 255, 0.85);
}

body.light-theme .batch-actions-bar {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(0, 0, 0, 0.08);
}

body.light-theme .batch-btn.delete {
    background: rgba(231, 76, 60, 0.85);
}

body.light-theme .batch-btn.move {
    background: rgba(57, 157, 255, 0.85);
}

body.light-theme .sidebar-header {
    border-color: rgba(0, 0, 0, 0.06);
}

body.light-theme .sidebar-footer {
    border-color: rgba(0, 0, 0, 0.06);
}

body.light-theme .category-section-title {
    color: #2c3e50;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

body.light-theme .sidebar-toggle {
    background: rgba(255, 255, 255, 0.8);
    color: #3d4f5f;
}

body.light-theme .video-card {
    background: var(--glass);
    border-color: rgba(0, 0, 0, 0.06);
}

body.light-theme .video-card .video-card-title {
    color: #3d4f5f;
}

body.light-theme .video-card .video-card-desc {
    color: #8a9aaa;
}

body.light-theme .video-modal-content {
    background: rgba(245, 247, 250, 0.98);
}

body.light-theme .video-info h3 {
    color: #3d4f5f;
}

body.light-theme .video-info p {
    color: #8a9aaa;
}

body.light-theme .monaco-modal-content {
    background: rgba(245, 247, 250, 0.98);
}

body.light-theme .monaco-header {
    border-color: rgba(0, 0, 0, 0.08);
}

body.light-theme .monaco-header h4 {
    color: #3d4f5f;
}

/* ==================== 简约模式 ==================== */
body.no-blur::before {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background: rgba(0, 0, 0, var(--bg-overlay-opacity));
}

body.no-blur.light-theme::before {
    background: rgba(255, 255, 255, var(--bg-overlay-opacity));
}

body.no-blur .sidebar {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

body.no-blur .modal {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

body.no-blur .card.has-bg,
body.no-blur body.view-style-2 .card.has-bg {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

/* 移动端减少阴影 */
@media (max-width: 768px) {
    .card:hover {
        box-shadow: 0 0 10px rgba(57, 157, 255, 0.3), 0 0 20px rgba(57, 157, 255, 0.1);
    }

    body.view-style-2 .card.has-bg:hover {
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2), 0 0 10px var(--card-bg-color, rgba(255,255,255,0.15));
    }
}

/* 分类管理动作 (Task 4.3) */
.sidebar-nav-item {
    position: relative;
    padding-right: 10px;
    /* Task 4.14: 允许气泡溢出 */
    overflow: visible !important;
}

.nav-actions {
    display: none;
    gap: 4px;
    margin-left: auto;
    opacity: 0;
    transition: all 0.2s ease;
}

/* 仅在管理模式下且悬停时显示分类操作按钮 */
body.page-manage-active .sidebar-nav-item:hover .nav-actions {
    display: flex;
    opacity: 1;
    transform: translateX(-2px);
}

.exit-manage-btn:hover {
    background: var(--primary) !important;
    color: white !important;
}

.nav-action-btn {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-dim);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

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

.nav-action-btn.delete:hover {
    background: #e74c3c;
}

/* 增强的管理状态栏 */
.admin-active-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 42px;
    background: linear-gradient(135deg, #1a2a6c, #b21f1f, #fdbb2d);
    background-size: 200% 200%;
    animation: gradientBG 10s ease infinite;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    z-index: 9999;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.banner-exit-btn {
    background: #27ae60;
    border: none;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 12px;
    font-weight: bold;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.banner-exit-btn:hover {
    background: #2ecc71;
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

/* 页面管理激活态全局视觉增强 (Task 9.1 & 9.3) */
body.page-manage-active .sidebar {
    border-right: 2px solid var(--primary);
    box-shadow: 4px 0 15px rgba(var(--primary-rgb), 0.1);
}

body.page-manage-active #grid-container {
    padding-top: 60px; /* 为顶部工具栏留出空间 */
    transition: padding 0.3s ease;
    filter: saturate(0.9); /* 轻微降低饱和度，突出编辑项 */
}

body.page-manage-active .card:hover {
    outline: 2px dashed var(--primary);
    outline-offset: 4px;
}

/* 隐藏误触项 (Task 9.3 & 9.5 专注模式) */
body.page-manage-active .logout-btn {
    display: none !important;
}

/* Task 9.5: 只有正在激活的管理按钮可见，隐藏同级其他工具按钮 (控制中心、实验室等) */
body.page-manage-active .sidebar-admin-toolbar .toolbar-item:not(.active) {
    display: none !important;
}

body.page-manage-active .sidebar-admin-toolbar {
    justify-content: center; /* 居中显示仅剩的一个按钮 */
    padding: 10px 0;
}
}

.banner-exit-btn:hover {
    background: #e74c3c;
    border-color: #e74c3c;
}

/* 优化批量操作条 */
.batch-actions-bar {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(15, 25, 35, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    padding: 12px 25px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 25px;
    z-index: 4000;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.batch-actions-bar.visible {
    transform: translateX(-50%) translateY(0);
}

.batch-btn {
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
    color: white;
}

/* Switch UI (Task 4.4) */
.switch-ui {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
}

.switch-ui input { 
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(255,255,255,0.1);
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(22px);
}

/* 视图切换动画 (Task 4.5.1) */
.category-section {
    animation: sectionFadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes sectionFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 隔离模式下的布局优化 */
body.view-isolated .category-section {
    margin-top: 20px;
}

body.view-isolated .category-section-title {
    font-size: 24px;
    margin-bottom: 30px;
    text-align: center;
    border-bottom: none;
}

/* Task 4.6.3 & 26.1: 禅意隔离态进一步减噪，但保持材质一致性 */
body.zen-active .category-section-title {
    opacity: 0.6;
    font-weight: 300;
    letter-spacing: 2px;
    font-size: 20px;
}

body.zen-active .card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

body.zen-active .card:hover {
    background: var(--glass-hover);
    border-color: var(--primary);
}

body.zen-active.light-theme .card {
    background: var(--glass);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.1);
}

/* Task 26.2: 亮色模式下导航菜单与常去图标的感知度增强 */
body.light-theme .zen-menu-item,
body.light-theme .zen-freq-item {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.08);
}

/* Task 9.2: 云端同步子菜单样式 */
.cloud-sync-btn {
    position: relative;
}

.sync-submenu {
    position: absolute;
    bottom: 100%;
    left: 0;
    background: var(--glass-card);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 8px;
    min-width: 180px;
    display: none;
    flex-direction: column;
    gap: 4px;
    z-index: 100;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    margin-bottom: 10px;
    animation: menuSlideUp 0.3s ease;
}

.cloud-sync-btn:hover .sync-submenu,
.cloud-sync-btn:focus-within .sync-submenu {
    display: flex;
}

.sync-menu-item {
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-main);
    white-space: nowrap;
}

.sync-menu-item:hover {
    background: var(--glass-hover);
    color: var(--primary);
}

.sync-menu-item.active {
    background: var(--primary-color);
    color: white;
}

.sync-menu-header {
    font-size: 11px;
    color: var(--text-dim);
    padding: 6px 12px 2px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sync-divider {
    height: 1px;
    background: var(--glass-border);
    margin: 4px 8px;
}

@keyframes menuSlideUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 侧边栏折叠态适配 */
body.sidebar-folded .sync-submenu {
    left: 100%;
    bottom: 0;
    margin-bottom: 0;
    margin-left: 10px;
}

body.light-theme .zen-menu-item:hover,
body.light-theme .zen-freq-item:hover {
    background: var(--glass-hover);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

body.zen-active.light-theme .card:hover {
    background: rgba(0, 0, 0, 0.06);
}

/* 侧边栏管理态重构 (Task 4.5.2) */
body.page-manage-active .sidebar-nav-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    margin: 6px 8px;
    padding: 12px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

/* Task 10.7.1: 管理模式图标静止高亮，保持简洁 (Task 9.3 优化) */
body.page-manage-active .toolbar-item.active .nav-icon i {
    display: inline-block;
    color: var(--primary);
    filter: drop-shadow(0 0 5px var(--primary));
    transform: scale(1.1);
}

/* 移除之前的旋转动画 */
@keyframes icon-rotate {
    /* 保持定义以防其他地方引用，但此处不再调用 */
}

body.light-theme.page-manage-active .sidebar-nav-item {
    background: rgba(0, 0, 0, 0.02);
}

/* 书签计数器 */
.nav-count {
    font-size: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-dim);
    padding: 1px 6px;
    border-radius: 10px;
    margin-left: 6px;
    font-family: monospace;
    opacity: 0.7;
}

body.light-theme .nav-count {
    background: rgba(0, 0, 0, 0.05);
}

/* 拖拽手柄增强 */
.sidebar-nav-item .nav-icon {
    cursor: grab;
    transition: transform 0.2s ease;
}

body.page-manage-active .sidebar-nav-item .nav-icon:hover {
    transform: scale(1.2);
    color: var(--primary);
}

/* 显隐状态高亮反馈 */
.is-hidden-cat {
    opacity: 0.5;
    filter: grayscale(80%);
    border-style: dashed !important;
}

/* 侧边栏图钉/悬浮逻辑 (Task 4.5.3) */
.sidebar-header {
    position: relative;
}

.sidebar-pin-btn {
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    opacity: 0.4;
    transition: all 0.3s ease;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 5px;
}

.notice-center-btn {
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    opacity: 0.4;
    transition: all 0.3s ease;
    padding: 5px;
    margin-left: auto; /* 将公告按钮推至右侧 */
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 5px;
    position: relative;
    font-size: 18px;
}

.notice-center-btn:hover, .sidebar-pin-btn:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

.notice-dot {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    background: #e74c3c;
    border-radius: 50%;
    border: 1px solid #fff;
    display: none;
}

.notice-dot.active {
    display: block;
    animation: noticePulse 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

@keyframes noticePulse {
    0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.7); }
    70% { transform: scale(1.1); box-shadow: 0 0 0 6px rgba(231, 76, 60, 0); }
    100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(231, 76, 60, 0); }
}

body.sidebar-pinned .sidebar-pin-btn {
    opacity: 1;
    color: var(--primary);
    transform: rotate(45deg);
}

/* 悬浮态 (Unpinned) */
body:not(.sidebar-pinned) .sidebar {
    position: fixed;
    transform: translateX(-100%);
    box-shadow: 20px 0 50px rgba(0,0,0,0.5);
}

body:not(.sidebar-pinned) .sidebar.open {
    transform: translateX(0);
}

body:not(.sidebar-pinned) .main-content {
    margin-left: 0;
}

/* ==================== 响应式侧边栏布局 (Phase 6) ==================== */

/* 1. Desktop 端 (> 1024px): 侧边栏固定 */
@media (min-width: 1025px) {
    :root {
        --sidebar-actual-width: var(--sidebar-width);
    }
    
    body.sidebar-pinned .sidebar {
        transform: translateX(0) !important;
    }
    
    body.sidebar-pinned .main-content {
        margin-left: var(--sidebar-actual-width);
    }

    /* 如果取消固定，则侧边栏悬浮，不占用空间 */
    body:not(.sidebar-pinned) .main-content {
        margin-left: 0;
    }
}

/* 2. Tablet 端 (768px - 1024px): 极简图标模式 (T6.2 预留) */
@media (min-width: 768px) and (max-width: 1024px) {
    :root {
        --sidebar-actual-width: 70px;
    }

    .sidebar {
        width: var(--sidebar-actual-width);
    }

    /* 隐藏文字标签，仅保留图标 */
    .sidebar .sidebar-title,
    .sidebar .nav-label,
    .sidebar .nav-count,
    .sidebar .sidebar-user-section {
        display: none;
    }

    .sidebar-header {
        justify-content: center;
        padding: 20px 0;
    }

    .sidebar-nav-item {
        justify-content: center;
        padding: 12px 0;
    }

    .main-content {
        margin-left: var(--sidebar-actual-width);
    }
    
    .sidebar-pin-btn { display: none; }
}

/* 3. Mobile 端 (< 768px): 完全隐藏抽屉态 */
@media (max-width: 767px) {
    :root {
        --sidebar-actual-width: 250px;
    }

    .sidebar {
        width: var(--sidebar-actual-width);
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0 !important;
    }

    .sidebar-pin-btn { display: none; }
}

/* ==================== 管理态安全感知 (Task 4.5.5) ==================== */
body.page-manage-active::after {
    content: "";
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    border: 4px solid var(--primary);
    pointer-events: none;
    z-index: 9999;
    animation: adminPulse 2s infinite ease-in-out;
}

@keyframes adminPulse {
    0% { border-color: rgba(57, 157, 255, 0.4); box-shadow: inset 0 0 20px rgba(57, 157, 255, 0.2); }
    50% { border-color: rgba(57, 157, 255, 0.8); box-shadow: inset 0 0 40px rgba(57, 157, 255, 0.4); }
    100% { border-color: rgba(57, 157, 255, 0.4); box-shadow: inset 0 0 20px rgba(57, 157, 255, 0.2); }
}

body.page-manage-active.admin-mode::after {
    border-color: #e74c3c;
    animation: adminCriticalPulse 2s infinite ease-in-out;
}

@keyframes adminCriticalPulse {
    0% { border-color: rgba(231, 76, 60, 0.4); box-shadow: inset 0 0 20px rgba(231, 76, 60, 0.2); }
    50% { border-color: rgba(231, 76, 60, 0.8); box-shadow: inset 0 0 40px rgba(231, 76, 60, 0.4); }
    100% { border-color: rgba(231, 76, 60, 0.4); box-shadow: inset 0 0 20px rgba(231, 76, 60, 0.2); }
}

/* 禅意静默态 (Task 4.6.1 & 26.3) */
body.zen-active.zen-silent .grid-container,
body.zen-active.zen-silent .footer-info,
body.zen-active.zen-silent .category-section,
body.zen-active.zen-silent .zen-horizon,
body.zen-active.zen-silent .zen-expand-btn,
body.zen-active.zen-silent .quick-nav-group,
body.zen-active.zen-silent .sidebar-toggle,
body.zen-active.zen-silent .guest-login-bridge {
    opacity: 0 !important;
    transform: translateY(30px) !important;
    pointer-events: none !important;
    transition: all 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

body.zen-active.zen-silent .sidebar {
    transform: translateX(-100%) !important;
    transition: all 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

/* 导航视界过渡优化 */
.zen-horizon {
    display: none;
    flex-direction: column;
    align-items: flex-start; /* 统一左对齐 */
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px; /* 增加内边距，提供更多呼吸感 */
    z-index: 10;
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

body.zen-active .zen-horizon {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

body.zen-active:not(.zen-silent) .zen-horizon {
    margin-top: 140px; /* 为顶部搜索框留位 */
}

.zen-frequent-container {
    width: 100%;
    margin-bottom: 25px;
    display: flex;
    flex-direction: column;
    align-items: flex-start; /* 同步左对齐 */
}

.zen-freq-title {
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 12px;
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.zen-freq-list {
    display: flex;
    gap: 15px;
    overflow-x: auto;
    padding: 5px 0; /* 取消左侧偏移，确保对齐基准线 */
    scrollbar-width: none;
}

.zen-freq-item {
    width: 42px;
    height: 42px;
    background: var(--glass);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--glass-border);
    /* T8: Stagger 入场 */
    opacity: 0;
    transform: translateY(10px);
    animation: zenItemRise 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.zen-freq-item:hover {
    transform: translateY(-3px);
    background: var(--glass-hover);
    border-color: var(--primary);
}

.zen-freq-item img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.zen-freq-item .emoji-icon {
    font-size: 20px;
}

.zen-nav-menu {
    display: flex;
    overflow-x: auto;
    white-space: nowrap;
    width: 100%;
    gap: 10px;
    padding: 10px 0; /* 取消水平 padding，依靠父级 zen-horizon 的 padding 对齐 */
    margin-bottom: 20px;
    scrollbar-width: none; /* Firefox */
    -webkit-overflow-scrolling: touch; /* iOS 滚动丝滑 */
}

/* 移动端菜单优化 (T9) */
@media (max-width: 768px) {
    .zen-menu-item {
        padding: 10px 22px; /* 更大的点击区域 */
        font-size: 15px;
    }
    
    .zen-freq-item {
        width: 48px;
        height: 48px;
    }
}

.zen-nav-menu::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.zen-menu-item {
    padding: 8px 18px;
    border-radius: 20px;
    background: var(--glass);
    color: var(--text-dim);
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: 8px;
    /* T8: Stagger 入场 */
    opacity: 0;
    transform: translateY(10px);
    animation: zenItemRise 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes zenItemRise {
    to { opacity: 1; transform: translateY(0); }
}

.zen-menu-item:hover {
    background: var(--glass-hover);
    color: var(--text);
}

.zen-menu-item.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(57, 157, 255, 0.3);
}

.zen-menu-item .menu-icon {
    font-size: 16px;
}

/* 禅意模式下隐藏网格内的重复标题 (T6) */
body.zen-active .category-section-title {
    display: none !important;
}

/* ==================== 全局重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ==================== 视觉实验室 (Task 4.2) ==================== */
/* 密度控制 */
body.density-compact {
    --card-w: 85px;
    --card-h: 85px;
    --grid-gap: 14px;
}
body.density-standard {
    --card-w: 105px;
    --card-h: 105px;
    --grid-gap: 20px;
}
body.density-comfortable {
    --card-w: 125px;
    --card-h: 125px;
    --grid-gap: 26px;
}

/* 网格布局适配变量 */
.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(var(--card-w), 1fr));
    gap: var(--grid-gap, 18px);
    padding: 10px 0;
}

/* 侧边栏风格 (锁定经典模式：极简弱边框设计) */
body.sidebar-style-classic .sidebar-nav-item {
    border: none;
    background: transparent;
    box-shadow: none;
}

body.sidebar-style-classic .sidebar-nav-item.active {
    background: rgba(57, 157, 255, 0.1);
    color: var(--primary);
    box-shadow: none;
    transform: none;
    font-weight: 700;
}

body.sidebar-style-classic .sidebar-nav-item.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 20%;
    bottom: 20%;
    width: 3px;
    background: var(--primary);
    border-radius: 0 4px 4px 0;
}

/* 视觉实验室 Tab 样式 */
.visual-lab-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    background: rgba(0,0,0,0.1);
    padding: 5px;
    border-radius: 10px;
}

.visual-option-group {
    margin-bottom: 15px;
}

.visual-option-label {
    font-size: 13px;
    color: var(--text-dim);
    margin-bottom: 8px;
    display: block;
}

.visual-btn-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* ==================== 页面主体样式 ==================== */
body {
    /* Task 13.3 & 17.3: 全局视觉占位底色 (消除白屏) */
    background-color: #1a1c1e; 
    background-image: radial-gradient(circle at center, #2c3e50 0%, #000000 100%);
    background-repeat: no-repeat;
    background-position: center center;
    background-attachment: fixed;
    background-size: cover;
    min-height: 100vh;
    color: var(--text);
    overflow-x: hidden;
    transition: background-image 0.8s ease-in-out, background-color 0.5s ease;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: -1;
    transition: backdrop-filter 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.5s ease;
}

/* Task 19.2: 当存在图片背景时，优化亮色模式下的遮罩透明度，防止洗白图片 */
body.light-theme[data-bg-type="bing"]::before,
body.light-theme[data-bg-type="custom"]::before {
    background: rgba(255, 255, 255, 0.15); /* 降低亮色遮罩强度 */
    backdrop-filter: blur(10px); /* 略微降低模糊度以展现壁纸细节 */
}

/* 搜索态视觉深度隔离 (Task 2.5.2) */
body.is-searching::before {
    backdrop-filter: blur(35px) saturate(50%);
    background: rgba(0, 0, 0, 0.6);
}

/* 移除背景遮罩 (Task 12.3) */
body.no-bg-mask::before {
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

body.is-searching .grid-container {
    filter: blur(8px);
    opacity: 0.3;
    pointer-events: none;
    transform: scale(0.98);
    transition: all 0.4s ease;
}

/* 焦点环增强 (Task 2.5.3 & 30.2 & 31.3) */
.card:focus-visible,
.sidebar-nav-item:focus-visible,
.zen-menu-item:focus-visible,
.zen-freq-item:focus-visible,
.notice-center-btn:focus-visible,
.sidebar-pin-btn:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 4px;
    box-shadow: 0 0 25px var(--primary);
    animation: focus-pulse 1.5s infinite;
    z-index: 50; 
    position: relative;
    /* Task 31.3: 确保在禅意模式下聚焦即唤醒视觉 */
    opacity: 1 !important;
    visibility: visible !important;
}

@keyframes focus-pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(57, 157, 255, 0.7); }
    70% { transform: scale(1.02); box-shadow: 0 0 0 10px rgba(57, 157, 255, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(57, 157, 255, 0); }
}

/* Zen Mode 展开动画曲线 (Task 2.5.1) */
.grid-container {
    transition: opacity 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ==================== 应用布局（左侧边栏 + 主内容） ==================== */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ==================== 左侧导航栏 ==================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    z-index: 3000; /* 还原侧边栏自然层级，不再与全屏搜索 Overlay 竞争 */
    transition: width var(--sidebar-transition), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
    overflow: hidden;
}

/* --- Task 6.2: 智能折叠逻辑 (Sidebar Folded/Mini Mode) --- */
body.sidebar-folded .sidebar {
    width: var(--sidebar-mini-width);
}

body.sidebar-folded .sidebar:hover {
    width: var(--sidebar-width);
    box-shadow: 20px 0 50px rgba(0, 0, 0, 0.4);
    z-index: 4501;
}

body.sidebar-folded .sidebar-title,
body.sidebar-folded .sidebar:not(:hover) .sidebar-pin-btn,
body.sidebar-folded .sidebar:not(:hover) .nav-label,
body.sidebar-folded .sidebar:not(:hover) .sidebar-user-info span,
body.sidebar-folded .sidebar:not(:hover) .sidebar-quick-logout,
body.sidebar-folded .sidebar:not(:hover) .sidebar-admin-toolbar .nav-label,
body.sidebar-folded .sidebar:not(:hover) .admin-tools-submenu .nav-label,
body.sidebar-folded .sidebar:not(:hover) .nav-count {
    opacity: 0;
    visibility: hidden;
    width: 0;
    margin: 0;
    position: absolute;
}

body.sidebar-folded .sidebar:hover .sidebar-title,
body.sidebar-folded .sidebar:hover .sidebar-pin-btn,
body.sidebar-folded .sidebar:hover .nav-label,
body.sidebar-folded .sidebar:hover .sidebar-user-info span,
body.sidebar-folded .sidebar:hover .sidebar-quick-logout,
body.sidebar-folded .sidebar:hover .sidebar-admin-toolbar .nav-label,
body.sidebar-folded .sidebar:hover .admin-tools-submenu .nav-label,
body.sidebar-folded .sidebar:hover .nav-count {
    opacity: 1;
    visibility: visible;
    width: auto;
    position: static;
    transition: opacity 0.3s ease 0.1s;
}

body.sidebar-folded .sidebar-header {
    justify-content: center;
    padding: 20px 0 16px;
}

body.sidebar-folded .sidebar:hover .sidebar-header {
    justify-content: flex-start;
    padding: 20px 16px 16px;
}

body.sidebar-folded .sidebar-nav-item {
    justify-content: center;
    padding: 10px 0;
    margin: 4px 6px;
    border-radius: 12px;
}

body.sidebar-folded .sidebar-nav-item .nav-icon {
    margin: 0;
    font-size: 1.2rem;
}

body.sidebar-folded .sidebar:hover .sidebar-nav-item {
    justify-content: flex-start;
    padding: 10px 14px;
    margin: 4px 8px;
}

body.sidebar-folded .sidebar-user-section {
    padding: 12px 0;
    display: flex;
    justify-content: center;
}

body.sidebar-folded .sidebar:hover .sidebar-user-section {
    padding: 12px;
    display: block;
}

body.sidebar-folded .sidebar-admin-toolbar {
    padding: 6px 4px;
    justify-content: center;
    flex-direction: column;
    gap: 10px;
    background: transparent;
    border: none;
}

body.sidebar-folded .sidebar:hover .sidebar-admin-toolbar {
    padding: 4px;
    flex-direction: row;
    gap: 6px;
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--glass-border);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 16px 16px;
    border-bottom: 1px solid var(--glass-border);
    flex-shrink: 0;
}

.sidebar-logo {
    font-size: 24px;
    flex-shrink: 0;
}

.sidebar-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 10px 8px;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.15) transparent;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.15);
    border-radius: 4px;
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 10px;
    color: var(--text-dim);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border: 1px solid transparent;
    margin-bottom: 3px;
    user-select: none;
}

.sidebar-nav-item .nav-icon {
    font-size: 18px;
    flex-shrink: 0;
    width: 22px;
    text-align: center;
}

.sidebar-nav-item .nav-label {
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-nav-item:hover:not(.active) {
    background: rgba(255, 255, 255, 0.08);
}

.sidebar-nav-item.active {
    background: var(--primary);
    color: white;
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 15px rgba(57, 157, 255, 0.45);
    font-weight: 600;
    transform: translateX(4px);
}

/* 侧边栏分组样式 (Task 4.1) */
.sidebar-group {
    margin-bottom: 20px;
    padding: 0 8px;
}

.sidebar-group-title {
    padding: 8px 12px 6px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-dim);
    opacity: 0.45;
    pointer-events: none;
}

/* 管理员模式侧边栏视觉区分 */
body.admin-mode .sidebar {
    border-left: 4px solid var(--primary);
    background: linear-gradient(180deg, rgba(30, 45, 65, 0.95) 0%, rgba(15, 15, 20, 0.98) 100%);
}

body.light-theme.admin-mode .sidebar {
    border-left-color: var(--primary);
    background: linear-gradient(180deg, rgba(245, 248, 255, 0.98) 0%, rgba(255, 255, 255, 0.98) 100%);
}

.sidebar-nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    height: 60%;
    width: 4px;
    background: white;
    border-radius: 0 4px 4px 0;
}

.sidebar-nav-item.hidden-item {
    opacity: 0.4;
    text-decoration: line-through;
}

.sidebar-footer {
    padding: 12px 8px;
    border-top: 1px solid var(--glass-border);
    flex-shrink: 0;
    background: var(--sidebar-bg);
    backdrop-filter: blur(10px);
    /* Task 28.1: 锚点化底部区域 */
    position: sticky;
    bottom: 0;
    z-index: 10;
    overflow: visible !important;
}

.sidebar-admin-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow: visible !important;
}

/* 视觉实验室快捷悬浮按钮 (Task 28.2) */
.mobile-fab-visual {
    position: fixed;
    right: 20px;
    bottom: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: none; /* 默认隐藏，JS 控制显示 */
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(57, 157, 255, 0.4);
    z-index: 4000;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.mobile-fab-visual:active {
    transform: scale(0.9);
}

.mobile-fab-visual i {
    font-size: 24px;
}

@media (max-width: 768px) {
    .mobile-fab-visual {
        display: flex;
    }
}

/* 禅意静默态下的视觉实验室恢复 (Task 28.2) */
body.zen-active.zen-silent .mobile-fab-visual {
    opacity: 0.3;
    transform: scale(0.8);
    right: 15px;
    bottom: 15px;
}

body.zen-active.zen-silent .mobile-fab-visual:hover {
    opacity: 1;
    transform: scale(1);
}

.sidebar-nav-label {
    padding: 12px 14px 8px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.25);
    letter-spacing: 1.2px;
    user-select: none;
}

.admin-tool-btn {
    opacity: 0.8;
    background: transparent;
    border: 1px solid transparent;
}

.admin-tool-btn:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
}

.admin-tool-btn.active {
    background: rgba(57, 157, 255, 0.1) !important;
    color: var(--primary) !important;
    border-color: rgba(57, 157, 255, 0.2) !important;
    box-shadow: none !important;
    transform: none !important;
}

.admin-tool-btn.active::before {
    display: none;
}

.admin-tool-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    filter: grayscale(1);
}

.sidebar-user-section {
    padding: 12px;
    border-bottom: 1px solid var(--glass-border);
    background: rgba(0, 0, 0, 0.02);
    flex-shrink: 0;
}

.sidebar-user-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    background: var(--glass-bg);
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.sidebar-user-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(57, 157, 255, 0.25);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(57, 157, 255, 0.15);
}

body.light-theme .sidebar-user-card:hover {
    background: rgba(255, 255, 255, 0.65);
    border-color: rgba(57, 157, 255, 0.4);
    box-shadow: 0 4px 15px rgba(57, 157, 255, 0.12);
}

.sidebar-user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    cursor: pointer;
    min-width: 0;
}

.user-avatar-wrapper {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(57, 157, 255, 0.15), rgba(57, 157, 255, 0.05));
    border: 1px solid rgba(57, 157, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.sidebar-user-card:hover .user-avatar-wrapper {
    transform: scale(1.05);
    background: linear-gradient(135deg, rgba(57, 157, 255, 0.25), rgba(57, 157, 255, 0.1));
    border-color: rgba(57, 157, 255, 0.4);
}

.user-avatar-wrapper i {
    font-size: 16px;
    color: var(--primary);
}

.user-meta-box {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.user-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
}

body.light-theme .user-name {
    color: #2c3e50;
}

.user-uid {
    font-size: 10px;
    opacity: 0.5;
    font-family: monospace;
}

.user-role-badge {
    font-size: 8px;
    font-weight: bold;
    padding: 1px 5px;
    border-radius: 4px;
    margin-left: 6px;
    line-height: 1.2;
    flex-shrink: 0;
    letter-spacing: 0.5px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-quick-logout {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.sidebar-quick-logout:hover {
    background: rgba(231, 76, 60, 0.15);
    color: #e74c3c;
    transform: scale(1.08);
}

.logout-btn {
    color: #ff6b6b !important;
}

.sidebar-footer .manage-cat-btn {
    width: 100%;
    text-align: left;
    padding: 8px 14px;
    font-size: 13px;
}

/* 移动端侧边栏切换按钮 */
.sidebar-toggle {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1500; /* 高于大部分元素但低于 Modal */
    background: var(--glass);
    backdrop-filter: blur(10px);
    width: 45px;
    height: 45px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 1px solid var(--glass-border);
    color: var(--text);
    transition: all 0.3s ease;
}

/* 移动端/禅意模式搜索召唤按钮 (Task S.3) */
.summon-search-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2500;
    background: var(--glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    width: 45px;
    height: 45px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 1px solid var(--glass-border);
    color: var(--text);
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.summon-search-btn:hover {
    background: var(--glass-hover);
    transform: scale(1.05);
    color: var(--primary);
}

body.search-active .summon-search-btn {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-20px);
}

/* 禅意模式静默态隐藏按钮 */
body.zen-active.zen-silent .summon-search-btn {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-20px);
}

body.zen-active:not(.zen-silent) .summon-search-btn {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

/* 移动端常驻显示 (除搜索激活态) */
@media (max-width: 768px) {
    .summon-search-btn {
        width: 40px;
        height: 40px;
        top: 15px;
        right: 15px;
    }
}

.sidebar-toggle:hover {
    background: var(--glass-hover);
    transform: scale(1.05);
}

/* 极简模式下的游客引导 (UX Bridge) */
.guest-login-bridge {
    margin-top: 15px;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: color 0.3s;
    text-decoration: underline;
    text-underline-offset: 4px;
}

.guest-login-bridge:hover {
    color: var(--primary);
}

.zen-active .sidebar-toggle {
    opacity: 0.6; /* 极简模式下降低干扰 */
}
.zen-active .sidebar-toggle:hover {
    opacity: 1;
}

/* ==================== 主内容区域 ==================== */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
    padding: 20px 20px 40px;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--sidebar-transition), transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
    will-change: margin-left;
}

#main-content {
    display: flex;
    flex-direction: column;
    flex: 1;
}

#grid-container.grid-container {
    flex: 1;
    width: 100%;
}

.grid-container {
    max-width: 62rem;
    margin: 0 auto;
}

/* ==================== 分类区块（连续滚动） ==================== */
.category-section {
    margin-bottom: 24px;
    scroll-margin-top: 30px;
}

.category-section-title {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    padding: 6px 16px;
    margin-bottom: 16px;
    margin-left: 4px;
    position: sticky;
    top: 0;
    z-index: 10;
    border-radius: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.category-section-title .cat-icon {
    font-size: 20px;
}

/* ==================== 分类按钮样式（保留用于管理弹窗内） ==================== */
.tab-btn {
    white-space: nowrap;
    padding: 8px 22px;
    border-radius: 25px;
    border: 1px solid var(--glass-border);
    background: var(--glass);
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 16px;
    font-weight: bold;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: scale(1.05);
}

.tab-btn.active.warning-btn {
    background: #f39c12;
    border-color: #e67e22;
    box-shadow: 0 4px 15px rgba(230, 126, 34, 0.4);
}

/* ==================== 分段选择器（Segmented Control）样式 ==================== */
.segmented-control {
    display: flex;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 8px;
    padding: 3px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

body.light-theme .segmented-control {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.03);
}

.seg-btn {
    flex: 1;
    border: none;
    outline: none;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    background: transparent;
    color: rgba(255, 255, 255, 0.65);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    white-space: nowrap;
}

body.light-theme .seg-btn {
    color: rgba(44, 62, 80, 0.65);
}

.seg-btn.active {
    background: var(--primary) !important;
    color: #ffffff !important;
    box-shadow: 0 2px 6px rgba(57, 157, 255, 0.3);
    font-weight: bold;
}

.tab-btn.hidden-item {
    opacity: 0.4;
    text-decoration: line-through;
}

/* ==================== 分类管理按钮 ==================== */
.manage-cat-btn {
    background: transparent;
    border: 1px dashed var(--glass-border);
    color: var(--text-dim);
    padding: 8px 16px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 15px;
    white-space: nowrap;
}

/* ==================== 导航网格布局（Style 0 默认） ==================== */
.nav-grid {
    display: grid;
    gap: 15px;
    margin: 0 auto;
    width: 100%;
    grid-template-columns: repeat(auto-fill, minmax(min(var(--card-w, 85px), 100%), 1fr));
}

/* ==================== 卡片样式（Style 0 默认） ==================== */
.card {
    background: var(--glass);
    border: none;
    border-radius: var(--radius);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: visible; /* 允许气泡溢出显示 */
    animation: fadeInUp 0.5s cubic-bezier(0.165, 0.84, 0.44, 1) both;
}

/* 淡入上浮动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Task 4.4: 新增网址虚线卡片 */
.add-new-card {
    cursor: pointer;
    min-height: var(--card-h, 85px);
    height: var(--card-h, 85px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    border: 1px dashed var(--glass-border) !important;
    background: transparent !important;
    box-shadow: none !important;
}

.add-new-card:hover {
    border-color: var(--primary) !important;
    background: rgba(57, 157, 255, 0.1) !important;
    transform: translateY(-2px);
}

.add-new-card i {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 4px;
}

.add-new-card h3 {
    font-size: 12px !important;
    color: var(--text-dim) !important;
}

.add-new-card.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

.card:hover {
    background: var(--glass-hover);
    transform: translateY(-2px);
    box-shadow: 0 0 15px rgba(57, 157, 255, 0.5), 0 0 30px rgba(57, 157, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card.sortable-ghost {
    opacity: 0.4;
    background: var(--primary);
}

.card.hidden-item {
    opacity: 0.3;
    filter: grayscale(1);
}

.card a {
    text-decoration: none;
    color: inherit;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0;
    overflow: hidden;
    gap: 6px;
}

/* ==================== 全局气泡提示框 (Task 4.13) ==================== */
[data-tooltip]:not([data-tooltip=""])::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: rgba(20, 20, 20, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: #fff;
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 11px;
    white-space: pre-wrap;
    z-index: 5000; /* 提升到侧边栏之上 */
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none;
    width: max-content;
    max-width: 220px;
    text-align: center;
    line-height: 1.6;
}

[data-tooltip]:not([data-tooltip=""])::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 4px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    border: 5px solid transparent;
    border-top-color: rgba(20, 20, 20, 0.85);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 5000;
    pointer-events: none;
}

[data-tooltip]:not([data-tooltip=""]):hover::after,
[data-tooltip]:not([data-tooltip=""]):hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* 兼容旧有的卡片特定逻辑 */
body.page-manage-active .card[data-tooltip]::after,
body.page-manage-active .card[data-tooltip]::before {
    display: none !important;
}

/* 移动端/触屏设备适配：禁用 hover 气泡 */
@media (hover: none) and (pointer: coarse) {
    [data-tooltip]::after,
    [data-tooltip]::before {
        display: none !important;
    }
    /* 触屏下禁用侧边栏 hover 展开，改由 JS 或 Pin 控制 */
    body.sidebar-folded .sidebar:hover {
        width: var(--sidebar-mini-width);
        box-shadow: none;
    }
}

/* ==================== 卡片图标与标题（Style 0） ==================== */
.icon-wrapper {
    width: var(--icon-size, 48px);
    height: var(--icon-size, 48px);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 4px auto 8px auto;
    overflow: hidden;
    transition: all 0.3s ease;
}

.card img {
    width: 24px;
    height: 24px;
    border-radius: 8px;
    object-fit: contain;
    transition: all 0.3s ease, opacity 0.3s ease;
    /* 初始透明，配合 loading="lazy" 减少闪烁感 */
    opacity: 1; 
}

/* 优化 Zen Mode 切换时主区域的位移动画 */
.main-content {
    transition: margin-left 0.6s cubic-bezier(0.165, 0.84, 0.44, 1), transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
    will-change: margin-left, transform;
}

.card .emoji-icon {
    font-size: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.card h3 {
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    width: 90%;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    white-space: normal;
    color: #fff;
    line-height: 1.25;
    min-height: 2.5em;
}

/* ==================== 管理操作按钮 ==================== */
.admin-actions {
    position: absolute;
    top: 5px;
    right: 5px;
    display: flex;
    gap: 3px;
    z-index: 20;
    opacity: 1;
}

.action-mini {
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 22px;
    height: 22px;
    border-radius: 5px;
    color: #fff;
    cursor: pointer;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==================== 管理操作区域 ==================== */
/* ==================== 管理操作区域 (Task 4.12 极简工具栏) ==================== */
.sidebar-admin-toolbar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

body.light-theme .sidebar-admin-toolbar {
    background: rgba(0, 0, 0, 0.04);
}

.toolbar-item {
    flex: 1;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center !important;
    padding: 0 !important;
    margin: 0 !important;
    border-radius: 8px !important;
    cursor: pointer;
    position: relative; /* 为气泡提供定位基准 */
    overflow: visible !important; /* Task 4.14: 确保气泡不被裁剪 */
    transition: all 0.2s ease;
}

.toolbar-item .nav-icon {
    margin-right: 0 !important;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toolbar-item:hover {
    background: var(--glass-hover);
    color: var(--primary);
}

.toolbar-item.active {
    background: transparent !important;
    color: var(--primary) !important;
}

/* 侧边指示器 (Task 9.1) */
.toolbar-item.active::before {
    content: '';
    position: absolute;
    left: -2px;
    top: 20%;
    height: 60%;
    width: 3px;
    background: var(--primary);
    border-radius: 0 4px 4px 0;
    box-shadow: 0 0 10px var(--primary);
}

.toolbar-item .nav-label {
    font-size: 12px;
    font-weight: 500;
    margin-left: 6px;
    display: none; /* 默认隐藏，仅在特定模式下或hover展示？不，用户要求“仅显示页面管理四个字” */
}

body.admin-mode .toolbar-item.active .nav-label {
    display: block;
}

/* 侧边栏内管理工具子菜单微调 */
.admin-tools-submenu {
    padding-left: 10px;
    margin-top: 2px;
    border-left: 2px dashed var(--glass-border);
    margin-left: 16px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-admin-section {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* ==================== 模态框 ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: rgba(30, 30, 30, 0.95);
    width: 90%;
    max-width: 480px;
    padding: 24px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    position: relative;
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* 优化滚动条样式 */
.modal-content::-webkit-scrollbar {
    width: 6px;
}
.modal-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}
.modal-content::-webkit-scrollbar-track {
    background: transparent;
}

body.light-theme .modal-content {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(0, 0, 0, 0.1);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

/* ==================== 表单元素 ==================== */
.form-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.form-row label {
    width: 100px;
    text-align: left;
    font-size: 13px;
    color: #ccc;
    flex-shrink: 0;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 4px;
}

body.light-theme .form-row label {
    color: #555;
}

/* ==================== 登录/注册 Tab 样式 (Task 6.1) ==================== */
.auth-title-group {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.auth-tab {
    position: relative;
    cursor: pointer;
    margin: 0;
    padding-bottom: 10px;
    font-size: 18px;
    color: var(--text-dim);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 3px solid transparent;
    opacity: 0.6;
}

.auth-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: bold;
    opacity: 1;
    transform: translateY(-1px);
}

.auth-tab:hover:not(.active) {
    color: var(--text);
    opacity: 0.9;
}

body.light-theme .auth-title-group {
    border-color: rgba(0, 0, 0, 0.05);
}

body.light-theme .auth-tab {
    color: #666;
}

body.light-theme .auth-tab.active {
    color: var(--primary);
}

input,
select {
    flex: 1;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.3);
    color: #fff;
    outline: none;
    font-size: 14px;
    width: 100%;
}

input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

/* ==================== 复选框和单选框 ==================== */
input[type="checkbox"],
input[type="radio"] {
    margin: 0;
    padding: 10px;
    flex-shrink: 0;
    width: auto !important;
    min-width: 18px;
    max-width: 18px;
    height: 18px;
}

/* ==================== 图标预览容器 ==================== */
.preview-container {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 20px;
    border-radius: 8px;
    box-sizing: border-box;
}

.preview-container img {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    object-fit: contain;
}

.preview-container span {
    font-size: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* 亮色模式适配 */
body.light-theme .preview-container {
    background: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.08);
    color: #3d4f5f;
}

/* ==================== Toast 提示 ==================== */
#toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(50px);
    background: #27ae60;
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    border: 1px solid var(--glass-border);
    z-index: 3000;
    text-align: center;
    font-weight: bold;
    font-size: 14px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    pointer-events: none;
}

#toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ==================== 加载动画 ==================== */
.global-spinner {
    width: 45px;
    height: 45px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

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

#global-loading-overlay {
    display: none;
    flex-direction: column;
}

/* ==================== 骨架屏 ==================== */
#skeleton-screen {
    display: none;
    width: 100%;
    max-width: 62rem;
    margin: 0 auto;
    padding-top: 10px;
}

.skel-tabs {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
    width: 120px;
}

.skel-tab {
    width: 100%;
    height: 35px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
}

.skel-grid {
    display: grid;
    gap: 15px;
    margin: 0 auto;
    width: 100%;
    grid-template-columns: repeat(6, 1fr);
}

.skel-card {
    height: var(--card-h, 85px);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.skel-anim::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(200%); }
}

/* ==================== 页脚信息 ==================== */
.footer-info {
    margin-top: auto; /* Task 21.1: 关键！将页脚推至容器底部 */
    padding: 50px 0 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 11px;
    z-index: 50;
    transition: all 0.3s ease;
}

/* Task 21.2: 管理模式下强制隐藏页脚，避免干扰编辑交互 */
body.admin-mode .footer-info {
    display: none !important;
}

body.light-theme .footer-info {
    color: rgba(0, 0, 0, 0.3);
}

.copyright-text a:hover {
    opacity: 1 !important;
    text-decoration: underline !important;
}

/* ==================== 拖拽排序相关 ==================== */
.card.sortable-ghost {
    opacity: 0.4;
    background: var(--primary);
}

.card.sortable-drag {
    opacity: 0.9;
    transform: rotate(3deg) scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(57, 157, 255, 0.4);
    z-index: 1000;
}

.card.drag-over {
    transform: translateY(5px);
    border-color: var(--primary);
}

/* 视频卡片拖拽排序样式 */
.video-card.sortable-ghost {
    opacity: 0.4;
    background: var(--primary);
}

.video-card.sortable-drag {
    opacity: 0.9;
    transform: rotate(2deg) scale(1.03);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(57, 157, 255, 0.4);
    z-index: 1000;
}

.video-card.drag-over {
    transform: translateY(5px);
    border-color: var(--primary);
}

.cat-item-row.sortable-ghost {
    background: var(--primary) !important;
    opacity: 0.5;
}

.drag-handle {
    cursor: grab;
    color: #666;
    margin-right: 5px;
    font-size: 18px;
}

/* Task 11.1: 管理模式下网格掉落区视觉强化 */
body.page-manage-active .nav-grid {
    min-height: 120px;
    border: 2px dashed rgba(57, 157, 255, 0.15);
    border-radius: var(--radius);
    padding: 20px;
    margin: 10px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(57, 157, 255, 0.02);
    position: relative;
}

/* Task 11.6: 拖拽悬停高亮 */
body.page-manage-active .nav-grid.grid-active {
    border-color: var(--primary);
    background: rgba(57, 157, 255, 0.08);
    box-shadow: inset 0 0 20px rgba(57, 157, 255, 0.1);
    transform: scale(1.01);
}

/* 优化占位符 (Ghost) 样式 - 使其更有“坑位”感 */
.card.sortable-ghost {
    opacity: 0.2 !important;
    background: var(--primary) !important;
    border: 2px dashed var(--primary) !important;
    box-shadow: none !important;
}

/* 全卡片热区提示 (排除新增按钮) */
body.page-manage-active .card:not(.add-new-card) {
    cursor: grab;
}

body.page-manage-active .card:not(.add-new-card):active {
    cursor: grabbing;
}

/* ==================== 批量选择样式 ==================== */
.card.selected {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    background: rgba(57, 157, 255, 0.2);
}

.card.selected::after {
    content: '✓';
    position: absolute;
    top: -8px;
    right: -8px;
    width: 20px;
    height: 20px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.batch-actions-bar {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 30px;
    padding: 10px 20px;
    display: none;
    gap: 10px;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.batch-actions-bar.visible {
    display: flex;
}

/* ==================== Task 3.3: 页面管理模式增强 ==================== */
body.page-manage-active .card {
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

body.page-manage-active .card .icon-wrapper {
    cursor: grab;
    position: relative;
}

body.page-manage-active .card .icon-wrapper:active {
    cursor: grabbing;
}

body.page-manage-active .card .icon-wrapper::after {
    content: '⠿';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    color: var(--primary);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    background: rgba(var(--primary-rgb), 0.1);
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

body.page-manage-active .card:hover .icon-wrapper::after {
    opacity: 0.8;
}

.batch-info {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
}

.batch-btns {
    display: flex;
    gap: 10px;
}

.batch-btn.cancel {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text);
}

.batch-actions-bar span {
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
    margin-right: 5px;
}

.batch-btn {
    padding: 8px 16px;
    border-radius: 20px;
    border: none;
    cursor: pointer;
    font-size: 13px;
    font-weight: bold;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.batch-btn.delete {
    background: rgba(231, 76, 60, 0.8);
    color: white;
}

.batch-btn.move {
    background: rgba(57, 157, 255, 0.8);
    color: white;
}

.batch-btn:hover {
    transform: scale(1.05);
}

.batch-btn:active {
    transform: scale(0.95);
}

/* ==================== Emoji 推荐选中状态 ==================== */
.emoji-suggestion {
    cursor: pointer;
    padding: 4px 8px;
    font-size: 20px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    transition: 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.emoji-suggestion.selected {
    background: rgba(57, 157, 255, 0.4);
    box-shadow: 0 0 8px rgba(57, 157, 255, 0.5);
}

body.light-theme .emoji-suggestion {
    background: rgba(0, 0, 0, 0.08);
}

body.light-theme .emoji-suggestion.selected {
    background: rgba(57, 157, 255, 0.3);
}

/* ==================== 缤纷模式 ==================== */
body.view-style-2 .nav-grid {
    grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr));
    gap: 15px;
}

body.view-style-2 .card {
    border-radius: var(--radius);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: none;
    justify-content: flex-start;
    transition: all 0.25s ease;
}

body.view-style-2 .card.has-bg {
    background: var(--card-bg-color, rgba(255,255,255,0.15));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

body.view-style-2 .card.has-bg:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.3), 
        0 0 15px var(--card-bg-color, rgba(255,255,255,0.2)),
        0 0 30px rgba(255, 255, 255, 0.1);
}

body.view-style-2 .card:not(.has-bg):hover {
    background: rgba(110, 115, 135, 0.32);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 
        0 8px 20px rgba(0, 0, 0, 0.3),
        0 0 15px rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

body.view-style-2 .card a {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    padding: 0 4px;
    gap: 10px;
}

body.view-style-2 .icon-wrapper {
    width: calc(var(--icon-size) + 10px);
    height: calc(var(--icon-size) + 10px);
    min-width: calc(var(--icon-size) + 10px);
    border-radius: 8px;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    overflow: hidden;
    flex-shrink: 0;
}

body.view-style-2 .card img {
    width: 30px;
    height: 30px;
    border-radius: 5px;
    object-fit: contain;
}

body.view-style-2 .card .emoji-icon {
    font-size: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

body.view-style-2 .card-text-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    min-width: 0;
    flex: 1;
    overflow: hidden;
}

body.view-style-2 .card h3 {
    font-size: 14px;
    font-weight: 500;
    text-align: left;
    margin-left: 0;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: normal;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    display: -webkit-box;
    color: #fff;
    line-height: 1.25;
    min-height: 2.5em;
}

body.view-style-2 .card[data-tooltip]::after {
    left: 50%;
    transform: translateX(-50%) translateY(10px);
}

body.view-style-2 .card[data-tooltip]:hover::after {
    transform: translateX(-50%) translateY(0);
}

body.view-style-2 .card[data-tooltip]::before {
    display: none;
}

/* ==================== 视频卡片网格 ==================== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin: 0 auto;
    width: 100%;
}

.video-card {
    background: var(--glass);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--glass-border);
    position: relative;
}

.video-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4), 0 0 15px rgba(57, 157, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

.video-card-cover {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 */
    background: rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.video-card-cover img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .video-card-cover img {
    transform: scale(1.05);
}

.video-card-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    z-index: 2;
    backdrop-filter: blur(4px);
}

.video-card-badge.bilibili {
    background: rgba(251, 114, 153, 0.9);
    color: white;
}

.video-card-badge.youtube {
    background: rgba(255, 0, 0, 0.9);
    color: white;
}

.video-play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0);
    transition: background 0.3s;
    z-index: 1;
}

.video-card:hover .video-play-overlay {
    background: rgba(0, 0, 0, 0.3);
}

.video-play-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.75);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.video-play-btn i {
    font-size: 24px;
    color: #333;
    margin-left: 2px;
}

.video-card:hover .video-play-btn {
    opacity: 1;
    transform: scale(1);
}

.video-card-body {
    padding: 10px 12px;
}

.video-card-title {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}

.video-card-desc {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 视频封面加载失败占位 */
.video-card-cover-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(57, 157, 255, 0.2), rgba(139, 92, 246, 0.2));
}

.video-card-cover-fallback i {
    font-size: 40px;
    color: rgba(255, 255, 255, 0.5);
}

/* 视频封面异步加载插槽 */
.video-cover-slot {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-cover-slot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .video-cover-slot img {
    transform: scale(1.05);
}

/* ==================== 视频播放弹窗 ==================== */
.video-modal-content {
    background: rgba(20, 20, 20, 0.98);
    width: 90%;
    max-width: 900px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

.video-close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all 0.2s;
}

.video-close-btn:hover {
    background: rgba(231, 76, 60, 0.8);
    transform: scale(1.1);
}

.video-player-wrapper {
    width: 100%;
    padding-top: 56.25%; /* 16:9 */
    position: relative;
    background: #000;
}

.video-player-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-info {
    padding: 16px 20px;
}

.video-info h3 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

.video-info p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    margin-bottom: 10px;
}

.video-ext-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--primary);
    font-size: 13px;
    text-decoration: none;
    transition: opacity 0.2s;
}

.video-ext-link:hover {
    opacity: 0.8;
}

/* ==================== Monaco Editor 弹窗 ==================== */
.monaco-modal-content {
    background: rgba(20, 20, 20, 0.98);
    width: 92%;
    max-width: 1000px;
    height: 80vh;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
}

.monaco-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.monaco-header h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.monaco-actions {
    display: flex;
    gap: 8px;
}

.monaco-action-btn {
    padding: 6px 14px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.08);
    color: #ccc;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.2s;
}

.monaco-action-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

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

.monaco-action-btn.primary:hover {
    opacity: 0.9;
}

.monaco-action-btn.close:hover {
    background: rgba(231, 76, 60, 0.8);
    border-color: rgba(231, 76, 60, 0.8);
    color: white;
}

.monaco-container {
    flex: 1;
    min-height: 0;
}

/* ==================== 跟随系统偏好 ==================== */
@media (prefers-color-scheme: light) {
    body:not(.light-theme):not(.dark-theme) {
        --glass: rgba(255, 255, 255, 0.55);
        --glass-hover: rgba(255, 255, 255, 0.75);
        --glass-border: rgba(0, 0, 0, 0.07);
        --text: #2c3e50;
        --text-dim: rgba(44, 62, 80, 0.7);
        --bg-overlay-opacity: 0.25;
    }

    body:not(.light-theme):not(.dark-theme) {
        background-color: #eef1f5;
    }

    body:not(.light-theme):not(.dark-theme)::before {
        background: rgba(240, 243, 248, var(--bg-overlay-opacity));
    }

    body:not(.light-theme):not(.dark-theme) .sidebar {
        background: rgba(255, 255, 255, 0.72);
        border-color: rgba(0, 0, 0, 0.06);
    }

    body:not(.light-theme):not(.dark-theme) .sidebar-nav-item {
        color: #5a6a7a;
    }

    body:not(.light-theme):not(.dark-theme) .sidebar-nav-item.active {
        background: var(--primary);
        color: white;
    }

    body:not(.light-theme):not(.dark-theme) .sidebar-nav-item:hover:not(.active) {
        background: rgba(0, 0, 0, 0.05);
    }

    body:not(.light-theme):not(.dark-theme) .card {
        background: rgba(255, 255, 255, 0.55);
    }

    body:not(.light-theme):not(.dark-theme) .card h3 {
        color: #3d4f5f;
    }

    body:not(.light-theme):not(.dark-theme) .modal-content {
        background: rgba(255, 255, 255, 0.92);
        border-color: rgba(0, 0, 0, 0.08);
    }

    body:not(.light-theme):not(.dark-theme) input,
    body:not(.light-theme):not(.dark-theme) select {
        background: rgba(255, 255, 255, 0.7);
        border-color: rgba(0, 0, 0, 0.1);
        color: #3d4f5f;
    }
}

/* ==================== 响应式设计 ==================== */
@media (min-width: 1025px) {
    body.sidebar-pinned .main-content {
        margin-left: var(--sidebar-width);
    }
    body:not(.sidebar-pinned) .main-content {
        margin-left: var(--sidebar-mini-width);
    }
}

@media (max-width: 1024px) {
    :root {
        --card-w: 80px;
        --card-h: 80px;
    }

    /* Tablet 端默认折叠 */
    body:not(.sidebar-pinned) {
        --sidebar-current-width: var(--sidebar-mini-width);
    }
    
    body:not(.sidebar-pinned) .main-content {
        margin-left: var(--sidebar-mini-width);
    }
    
    body.sidebar-pinned .main-content {
        margin-left: var(--sidebar-width);
    }

    .nav-grid {
        grid-template-columns: repeat(3, 1fr) !important; /* Pad 端强制三列优化 */
    }

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

/* 触控反馈优化 */
.card:active, .sidebar-nav-item:active, .tab-btn:active {
    transform: scale(0.96);
    opacity: 0.8;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 2900; /* 高于常规，低于侧边栏 sidebar 的 3000 */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.sidebar-overlay.visible {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 768px) {
    :root {
        --card-w: 75px;
        --card-h: 75px;
        --sidebar-width: 250px;
    }

    /* 移动端：侧边栏变为滑出式 */
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-toggle {
        display: flex;
    }

    .main-content {
        margin-left: 0;
        padding: 60px 12px 80px;
    }

    body.view-style-2 .nav-grid {
        gap: 12px;
    }

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

    .video-modal-content {
        width: 96%;
        max-width: none;
    }

    .monaco-modal-content {
        width: 98%;
        height: 90vh;
    }

    .category-section-title {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    :root {
        --card-w: 70px;
        --card-h: 70px;
    }

    .main-content {
        padding: 60px 10px 80px;
    }

    .batch-actions-bar {
        bottom: 60px;
        padding: 8px 14px;
    }

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

    /* 移动端表单自动适配独立行 */
    .form-row {
        flex-direction: column;
        align-items: stretch !important;
        gap: 6px;
        margin-bottom: 12px;
    }
    .form-row label {
        width: 100% !important;
        text-align: left;
        margin-bottom: 2px;
    }
    /* 含有Checkbox的行保持横向 */
    .form-row:has(input[type="checkbox"]) {
        flex-direction: row !important;
        align-items: flex-start !important;
    }
    .form-row:has(input[type="checkbox"]) label {
        width: 70px !important;
    }

    /* 移动端搜索引擎Tab自适应 */
    .engine-tabs {
        flex-wrap: wrap;
        gap: 6px;
    }
    .engine-tab {
        flex: 1 1 calc(33.333% - 6px);
        font-size: 11px;
        padding: 8px 10px;
    }
}

/* ==================== 高颜值立体搜索框 (Summoned Overlay) ==================== */
.search-section {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 5500; /* 确立最高统治权，覆盖侧边栏 (3000) 与气泡提示 (5000) */
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    visibility: hidden;
}

body.search-active .search-section {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
}

.search-wrapper {
    background: rgba(15, 25, 35, 0.82); /* 提升背景不透明度以增强输入文字对比度 */
    border: 1px solid var(--glass-border); /* 复用全局边框变量 */
    border-radius: 28px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4); /* 增强悬浮阴影，确立 Overlay 深度 */
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    width: 90%;
    max-width: 720px;
    margin: 0 auto;
    /* 抗锯齿补丁 (Task 10.1) */
    outline: 1px solid transparent;
    backface-visibility: hidden;
    transform: perspective(1000px) scale(0.9) translateY(30px);
}

body.search-active .search-wrapper {
    transform: perspective(1000px) scale(1) translateY(0);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .search-wrapper {
        width: 95%;
        border-radius: 20px; /* 移动端圆角稍微减小以适配小屏比例 */
        transform: perspective(1000px) scale(0.95) translateY(20px);
    }
    body.search-active .search-wrapper {
        transform: perspective(1000px) scale(1) translateY(0);
    }
}

/* 搜索引擎切换器具体样式 */
.search-engine-selector {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    flex-shrink: 0;
    width: 44px; /* 固定宽度防止抖动 */
    height: 44px;
}

.current-engine {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #fff;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.2s;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.current-engine:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

body.light-theme .current-engine {
    color: #444;
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.05);
}

.engine-list {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    width: 140px;
    background: #1e1e1e;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 6px;
    display: none; /* 默认隐藏 */
    flex-direction: column;
    gap: 4px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    z-index: 2000;
}

.engine-list.show {
    display: flex; /* 只在有 .show 时显示 */
    animation: engineListFadeIn 0.2s ease-out;
}

@keyframes engineListFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.engine-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 10px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.engine-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.engine-item.active {
    background: rgba(57, 157, 255, 0.2);
    color: var(--primary);
}

body.light-theme .engine-list {
    background: rgba(255, 255, 255, 0.98);
    border-color: rgba(0, 0, 0, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

body.light-theme .engine-item {
    color: #555;
}

body.light-theme .engine-item:hover {
    background: rgba(0, 0, 0, 0.05);
    color: #1a1a1a;
}

body.light-theme .engine-item.active {
    background: rgba(57, 157, 255, 0.1);
    color: var(--primary);
}

@keyframes slideInUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 移除旧的 Search Tabs 相关样式，防止干扰 */
.engine-tabs, .engine-tab {
    display: none !important;
}

/* ==================== 快捷导航按钮 (Quick Nav) ==================== */
.quick-nav-group {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    transform: translateX(20px);
}

.quick-nav-group.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
}

.quick-nav-btn {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: rgba(30, 30, 30, 0.7);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.quick-nav-btn:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(57, 157, 255, 0.4);
}

body.light-theme .quick-nav-btn {
    background: rgba(255, 255, 255, 0.8);
    color: #444;
    border-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

body.light-theme .quick-nav-btn:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 12px 30px rgba(57, 157, 255, 0.3);
}

@media (max-width: 768px) {
    .quick-nav-group {
        bottom: 20px;
        right: 20px;
    }
    .quick-nav-btn {
        width: 44px;
        height: 44px;
        font-size: 22px;
    }
}

/* ==================== 搜索态隔离 (Task 2.5.2) ==================== */
body.is-searching .grid-container {
    opacity: 0.05;
    filter: blur(8px) grayscale(1);
    transform: translateY(20px) scale(0.98);
    pointer-events: none;
}

body.is-searching .category-section-title {
    opacity: 0;
    transform: translateX(-20px);
}

.grid-container, .category-section-title {
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
}

/* ==================== 极简沉浸沉浸模式 (Zen Mode) ==================== */
.sidebar,
.sidebar-toggle,
.grid-container,
.category-section-title,
.footer-info,
.quick-nav-group {
    transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1), 
                opacity 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

body.zen-active .sidebar,
body.zen-active .sidebar-toggle,
body.zen-active .grid-container,
body.zen-active .category-section-title,
body.zen-active .quick-nav-group {
    opacity: 0;
    pointer-events: none;
    transform: translateY(30px);
}

/* Task 21.2: 禅意模式版权信息策略 - 仅在静默态隐藏 */
body.zen-active .footer-info {
    opacity: 0.8;
    transform: translateY(0);
}

body.zen-active.zen-silent .footer-info {
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

/* Task 33.1: 禅意模式下统一容器宽度与对齐 */
body.zen-active:not(.zen-silent) .grid-container {
    max-width: 1200px !important; 
    margin: 0 auto !important;
    padding: 0 30px 40px !important; /* 与 zen-horizon 的 padding: 0 30px 一致 */
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

body.zen-active:not(.zen-silent) .category-section-title {
    max-width: 1200px;
    margin: 0 auto;
    padding: 8px 20px;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

/* 确保侧边栏在显式打开时，无论是否在禅意模式都必须可见 */
body.zen-active .sidebar.open {
    opacity: 1 !important;
    pointer-events: auto !important;
    transform: translateX(0) !important;
    visibility: visible !important;
}

body.zen-active .main-content {
    margin-left: 0 !important;
    min-height: 100vh;
}

.zen-expand-btn {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    z-index: 100;
    transition: all 0.3s ease;
    animation: bounce 2s infinite;
}

body.light-theme .zen-expand-btn {
    color: rgba(0, 0, 0, 0.5);
}

.zen-expand-btn:hover {
    color: #399dff;
    transform: translateX(-50%) translateY(-5px);
}

.zen-expand-btn i {
    font-size: 28px;
}

.zen-expand-btn span {
    font-size: 13px;
    letter-spacing: 1px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {transform: translateX(-50%) translateY(0);}
    40% {transform: translateX(-50%) translateY(-10px);}
    60% {transform: translateX(-50%) translateY(-5px);}
}

body:not(.zen-active) .zen-expand-btn {
    opacity: 0;
    pointer-events: none;
    display: none !important;
}

.sidebar, .sidebar-toggle, .grid-container, .category-section-title, .footer-info {
    transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

body.light-theme .search-section {
    background: rgba(255, 255, 255, 0.2);
}

body.light-theme .search-wrapper {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.search-section:focus-within .search-wrapper {
    background: rgba(0, 0, 0, 0.55);
    border-color: rgba(57, 157, 255, 0.35);
    box-shadow: 0 8px 32px rgba(57, 157, 255, 0.15), 0 0 15px rgba(57, 157, 255, 0.1);
}

body.light-theme .search-section:focus-within .search-wrapper {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(57, 157, 255, 0.5);
    box-shadow: 0 8px 32px rgba(0,0,0,0.06), 0 0 15px rgba(57, 157, 255, 0.2);
}

.search-input-group {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    gap: 12px;
}

.search-icon {
    font-size: 20px;
    color: var(--text-dim);
    opacity: 0.8;
}

#sea-input {
    flex: 1;
    background: transparent !important;
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
    color: #ffffff !important;
    font-size: 17px;
    font-weight: 500;
    padding: 0;
    margin: 0;
}

body.light-theme #sea-input {
    color: #1a1a1a !important;
}

#sea-input::placeholder {
    color: rgba(255, 255, 255, 0.75);
}

body.light-theme #sea-input::placeholder {
    color: rgba(0, 0, 0, 0.55);
}

.sea-clear-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    font-size: 20px;
    padding: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
    transition: opacity 0.2s;
    border-radius: 50%;
}

.sea-clear-btn:hover {
    opacity: 1;
    background: rgba(255,255,255,0.1);
}

body.light-theme .sea-clear-btn:hover {
    background: rgba(0,0,0,0.06);
}

/* 搜索下拉框样式 (Task 2.5.2) - 升级为与输入框 1:1 对齐的一体化磨砂玻璃 (Task UI.26) */
.search-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(15, 25, 35, 0.82);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid var(--glass-border);
    border-top: none;
    border-radius: 0 0 28px 28px;
    padding: 15px;
    z-index: 1000;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

/* 当搜索状态激活时，无缝平滑抹平输入框底部圆角 (Task UI.26) */
body.is-searching .search-wrapper {
    border-radius: 28px 28px 0 0 !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15) !important;
}

.local-result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 15px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.local-result-item:hover,
.local-result-item.active {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.local-result-item.active {
    border: 1px solid var(--primary);
}

.result-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    flex-shrink: 0;
    font-size: 20px;
    line-height: 1;
}

.result-icon img {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

.result-info {
    flex: 1;
    overflow: hidden;
}

.result-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-url {
    font-size: 11px;
    color: var(--text-dim);
    opacity: 0.6;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-empty-tip {
    text-align: center;
    padding: 20px;
    color: var(--text-dim);
    font-size: 13px;
    font-style: italic;
}

body.light-theme .search-dropdown {
    background: rgba(255, 255, 255, 0.82);
    border-color: rgba(0, 0, 0, 0.08);
}

body.light-theme .local-result-item:hover,
body.light-theme .local-result-item.active {
    background: rgba(0, 0, 0, 0.05);
}

/* ==================== Task 3.2: 魔法棒与管理按钮 ==================== */
.card-admin-btns {
    position: absolute;
    top: 5px;
    right: 5px;
    display: none;
    gap: 4px;
    z-index: 10;
}

/* 仅在管理模式下悬停显示编辑按钮 */
body.page-manage-active .card:hover .card-admin-btns {
    display: flex;
}

.card-edit-btn {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: none;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: all 0.2s;
}

.card-edit-btn:hover {
    background: var(--primary);
    transform: scale(1.1);
}

.card-delete-btn {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: none;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: all 0.2s;
}

.card-delete-btn:hover {
    background: #e74c3c;
    transform: scale(1.1);
}

.icon-btn-action {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.icon-btn-action:hover {
    background: var(--primary);
    border-color: var(--primary);
}

.icon-btn-action.loading i {
    animation: spin 1s linear infinite;
}

#edit-icon-preview {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

body.light-theme .icon-btn-action {
    background: rgba(0, 0, 0, 0.05);
    color: #3d4f5f;
}

/* ==================== Task 4.1 & 4.2: Admin & Notices ==================== */
.important-banner {
    background: #e67e22;
    color: white;
    padding: 8px 16px;
    z-index: 1000;
    font-size: 13px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
}

.banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    max-width: 1200px;
    margin: 0 auto;
    cursor: pointer;
}

.banner-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
}

@media (max-width: 600px) {
    .important-banner {
        font-size: 12px;
        padding: 8px 10px;
    }
    .banner-more span {
        display: none; /* 极窄屏幕隐藏“查看更多”文字，仅留箭头 */
    }
    .banner-close {
        padding: 2px 6px;
    }
}

.banner-more {
    font-size: 11px;
    background: rgba(255,255,255,0.15);
    padding: 2px 8px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 2px;
    transition: background 0.2s;
}

.banner-content:hover .banner-more {
    background: rgba(255,255,255,0.3);
}

.banner-close {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    padding: 2px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    margin-left: 10px;
}

.notice-center-btn {
    position: relative;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 20px;
    cursor: pointer;
    padding: 5px;
    border-radius: 8px;
    transition: all 0.2s;
}

.notice-center-btn:hover {
    color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
}

.notice-dot {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 8px;
    height: 8px;
    background: #e74c3c;
    border-radius: 50%;
    display: none;
    border: 2px solid #1a1a1a;
}

.notice-dot.active {
    display: block;
    animation: dotPulse 1.5s infinite;
}

@keyframes dotPulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.7); }
    70% { transform: scale(1.2); box-shadow: 0 0 0 6px rgba(231, 76, 60, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(231, 76, 60, 0); }
}

/* 公告中心弹窗样式 */
.notice-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-height: 400px;
    overflow-y: auto;
    padding-right: 5px;
}

.notice-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

body.light-theme .notice-item {
    background: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.08);
}

.notice-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.notice-tag {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: bold;
}

.notice-tag.important { background: rgba(231, 76, 60, 0.2); color: #e74c3c; }
.notice-tag.info { background: rgba(52, 152, 219, 0.2); color: #3498db; }

.notice-time {
    font-size: 12px;
    color: var(--text-dim);
    opacity: 0.6;
}

.notice-item-title {
    font-size: 15px;
    font-weight: bold;
    margin-bottom: 5px;
    color: var(--text);
}

.notice-item-content {
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.6;
}

.admin-hub-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--glass-border);
}

.hub-tab {
    background: none;
    border: none;
    color: #888;
    padding: 8px 16px;
    cursor: pointer;
    font-weight: bold;
    border-bottom: 2px solid transparent;
}

.hub-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.hub-pane {
    display: none;
}

.hub-pane.active {
    display: block;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.admin-table th, .admin-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.code-font {
    font-family: monospace;
    font-weight: bold;
    color: var(--primary-color);
}

.role-badge, .status-badge {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    text-transform: uppercase;
    font-weight: bold;
}

.role-badge.admin { background: #e74c3c; color: white; }
.role-badge.user { background: #3498db; color: white; }
.status-badge.active { background: #2ecc71; color: white; }
.status-badge.frozen { background: #95a5a6; color: white; }

.action-link {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 12px;
    padding: 2px 5px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.action-link:hover {
    background: rgba(57, 157, 255, 0.1);
    text-decoration: none;
}

.action-link.danger:hover {
    color: #e74c3c;
    background: rgba(231, 76, 60, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 12px;
    color: #888;
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    color: #fff;
    padding: 10px;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.form-group input:focus, .form-group textarea:focus {
    background: rgba(255,255,255,0.1);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(57, 157, 255, 0.2);
}

/* Task CR.2: 图标预览预览方块样式 */
.icon-preview-box {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.icon-preview-box:hover {
    background: rgba(255,255,255,0.1) !important;
    border-color: var(--primary) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.icon-preview-box:active {
    transform: translateY(0);
}

body.light-theme .icon-preview-box {
    background: rgba(0,0,0,0.03) !important;
    border-color: #ddd !important;
}

body.light-theme .icon-preview-box:hover {
    background: rgba(0,0,0,0.05) !important;
    border-color: var(--primary) !important;
}

body.light-theme .form-group input, 
body.light-theme .form-group textarea,
body.light-theme .form-group select,
body.light-theme .admin-search-body select {
    background: #fff !important;
    color: #2c3e50 !important;
    border-color: #ddd !important;
}

/* Task 6.4: 针对公告管理编辑器的深度兼容性修复 - 增加原生媒体查询支持 */
.admin-announce-editor textarea,
.admin-announce-editor input {
    color: #ffffff;
}

@media (prefers-color-scheme: light) {
    body:not(.dark-theme) .admin-announce-editor textarea,
    body:not(.dark-theme) .admin-announce-editor input {
        color: #2c3e50 !important;
        background-color: #ffffff !important;
        border: 1px solid #ced4da !important;
    }
}

body.light-theme .admin-announce-editor textarea,
body.light-theme .admin-announce-editor input {
    color: #2c3e50 !important;
    background-color: #ffffff !important;
    border: 1px solid #ced4da !important;
}

body.light-theme .admin-announce-editor textarea::placeholder,
body.light-theme .admin-announce-editor input::placeholder {
    color: #adb5bd;
}

/* ==================== Task 3.5: Monaco Editor Modal ==================== */
#monaco-container {
    box-shadow: inset 0 2px 10px rgba(0,0,0,0.2);
}

.monaco-editor, .monaco-editor .margin, .monaco-editor-background {
    background-color: transparent !important;
}

body.light-theme #monaco-container {
    background: #fff;
    border-color: rgba(0,0,0,0.1);
}

/* Task 6.8: 公告中心列表样式 */
.notice-list-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 5px 2px;
}

.notice-center-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.btn-mark-all-read {
    font-size: 12px;
    color: var(--primary);
    background: rgba(52, 152, 219, 0.1);
    border: 1px solid rgba(52, 152, 219, 0.2);
    padding: 4px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-mark-all-read:hover {
    background: var(--primary);
    color: #fff;
}

body.light-theme .notice-center-header {
    border-bottom-color: #eee;
}

.notice-list-item {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 12px;
    padding: 0; /* Changed for accordion */
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.2s ease;
    margin-bottom: 10px;
    overflow: hidden;
    cursor: pointer;
}

.notice-list-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.notice-list-item.is-top {
    border-left: 3px solid #f1c40f;
    background: rgba(241, 196, 15, 0.08);
}

.notice-list-item.is-expanded .notice-item-content {
    max-height: 1000px;
    padding: 15px;
    opacity: 1;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.notice-list-item.is-read {
    opacity: 0.6;
}

.notice-list-item.is-read.hide-read {
    display: none;
}

.notice-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    user-select: none;
}

.notice-item-title {
    font-weight: 700;
    font-size: 14px;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.notice-item-arrow {
    font-size: 18px;
    transition: transform 0.3s ease;
    opacity: 0.5;
}

.is-expanded .notice-item-arrow {
    transform: rotate(180deg);
}

.notice-item-content {
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-dim);
    word-break: break-word;
    max-height: 0;
    padding: 0 15px;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(0, 0, 0, 0.1);
}

.notice-center-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 15px;
    margin-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.notice-header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.toggle-hide-read {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    opacity: 0.7;
    cursor: pointer;
}

.toggle-hide-read input {
    cursor: pointer;
}

/* Task 6.10: 未读标签与置顶标签 */
.notice-badge {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: bold;
    text-transform: uppercase;
}

.badge-top {
    background: #f1c40f;
    color: #000;
}

.badge-new {
    background: var(--primary, #3498db);
    color: #fff;
    margin-left: 5px;
    animation: badgeFade 1.5s infinite alternate;
}

@keyframes badgeFade {
    from { opacity: 0.6; }
    to { opacity: 1; }
}

body.light-theme .notice-list-item.is-top {
    background: #fffdf0;
    border-color: #f1c40f;
}

body.light-theme .badge-top {
    color: #000;
}
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.notice-item-title {
    font-weight: 700;
    font-size: 14px;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.notice-item-date {
    font-size: 11px;
    opacity: 0.4;
}

.notice-item-content {
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-dim);
    word-break: break-all;
}

body.light-theme .notice-list-item {
    background: #f8f9fa;
    border-color: #eee;
}

body.light-theme .notice-item-content {
    color: #444;
}

.empty-notice {
    text-align: center;
    padding: 50px 0;
    opacity: 0.4;
    font-size: 13px;
}

.error-text {
    color: #e74c3c;
    padding: 20px;
    text-align: center;
    font-weight: bold;
}

/* ==================== Admin Hub 模块化样式 (Task 4.4) ==================== */
.admin-hub-tabs {
    display: flex;
    gap: 5px;
    background: rgba(0, 0, 0, 0.2);
    padding: 5px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.hub-tab {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-dim);
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s ease;
}

.hub-tab.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(57, 157, 255, 0.3);
}

.hub-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}

.hub-pane.active {
    display: block;
}

.admin-hub-loading {
    padding: 40px;
    text-align: center;
    color: var(--text-dim);
    font-style: italic;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== 管理员高亮状态栏 ==================== */
.admin-active-banner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 36px;
    background: linear-gradient(90deg, #1e3a8a, #3b82f6);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    z-index: 10000;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    animation: slideDown 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

body.admin-mode {
    padding-top: 36px;
}
    font-size: 13px;
    font-weight: 600;
    z-index: 10000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    pointer-events: none;
    animation: slideDown 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

/* 适配顶栏开启后的布局偏移 */
body.admin-mode {
    padding-top: 32px;
}

body.admin-mode .sidebar {
    top: 32px;
}

body.admin-mode .sidebar-toggle {
    top: 42px;
}

/* ==================== 快捷导航增强 ==================== */
.quick-nav-group {
    opacity: 0.4;
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: auto;
}

.quick-nav-group:hover,
.quick-nav-group.active {
    opacity: 1;
}

/* ==================== Task UM.2: 用户管理 Dashboard 增强样式 ==================== */

/* 1. 搜索与筛选面板 */
.admin-search-panel {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.admin-search-header {
    padding: 10px 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.05);
}

.admin-search-header:hover {
    background: rgba(255, 255, 255, 0.08);
}

.admin-search-body {
    padding: 15px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    border-top: 1px solid var(--glass-border);
}

.admin-search-body.collapsed {
    display: none;
}

/* 2. 表格视觉优化 */
.admin-table-container {
    width: 100%;
    overflow-x: auto;
    border-radius: 10px;
    border: 1px solid var(--glass-border);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.admin-table th {
    background: rgba(255, 255, 255, 0.05);
    padding: 12px 10px;
    text-align: left;
    font-weight: 600;
    color: var(--text-dim);
    border-bottom: 1px solid var(--glass-border);
    white-space: nowrap;
}

.admin-table td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--glass-border);
    color: var(--text);
    vertical-align: middle;
}

.admin-table tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

/* 3. 分页组件 */
.admin-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 5px;
    flex-wrap: wrap;
    gap: 10px;
}

.pagination-info {
    font-size: 12px;
    color: var(--text-dim);
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 5px;
}

.page-btn {
    min-width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 12px;
}

.page-btn:hover:not(:disabled) {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.page-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

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

/* 4. 多选模式适配 */
.admin-table th.col-checkbox,
.admin-table td.col-checkbox {
    width: 40px;
    text-align: center;
    padding: 12px 0;
}

.admin-table tr.selected {
    background: rgba(57, 157, 255, 0.1) !important;
}

/* 用户端悬浮批量工具栏 */
.user-batch-bar {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--primary);
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    z-index: 2500;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    max-width: 90vw;
    flex-wrap: wrap;
    justify-content: center;
}

.user-batch-bar.visible {
    transform: translateX(-50%) translateY(0);
}

.batch-action-btn, 
.user-batch-bar .batch-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white !important;
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
}

.batch-action-btn:hover, 
.user-batch-bar .batch-btn:hover {
    background: rgba(255, 255, 255, 0.35);
}

.user-batch-bar .batch-btn.danger {
    background: rgba(231, 76, 60, 0.85);
    color: white !important;
}

.user-batch-bar .batch-btn.danger:hover {
    background: rgba(231, 76, 60, 1);
}

/* 后台管理一体化批量工具卡片 (Task NT-V2.5) */
.admin-batch-bar {
    background: rgba(255, 255, 255, 0.04);
    border: 1px dashed var(--glass-border);
    border-radius: 8px;
    padding: 0 15px;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 0;
    box-sizing: border-box;
}

.admin-batch-bar.visible {
    max-height: 100px;
    opacity: 1;
    padding: 10px 15px;
    margin-bottom: 15px;
}

.admin-batch-bar span {
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
}

.admin-batch-bar .batch-btn {
    background: var(--primary);
    color: white !important;
    border: none;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.admin-batch-bar .batch-btn:hover {
    background: var(--primary-hover, rgba(57, 157, 255, 0.8));
    transform: translateY(-1px);
}

.admin-batch-bar .batch-btn.danger {
    background: #e74c3c;
}

.admin-batch-bar .batch-btn.danger:hover {
    background: #c0392b;
}

body.light-theme .admin-batch-bar {
    background: rgba(0, 0, 0, 0.03);
}

/* 状态标签增强 */
.status-badge {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-badge.active { background: rgba(46, 204, 113, 0.2); color: #2ecc71; }
.status-badge.frozen { background: rgba(231, 76, 60, 0.2); color: #e74c3c; }
.status-badge.pending { background: rgba(241, 196, 15, 0.2); color: #f1c40f; }

/* 公告状态样式适配 (Task NT.4) */
.status-badge.published { background: rgba(46, 204, 113, 0.2); color: #2ecc71; }
.status-badge.draft { background: rgba(241, 196, 15, 0.2); color: #f1c40f; }
.status-badge.archived { background: rgba(149, 165, 166, 0.2); color: #95a5a6; }

/* 邀请码状态样式适配 */
.status-badge.unused { background: rgba(46, 204, 113, 0.2); color: #2ecc71; }
.status-badge.used { background: rgba(149, 165, 166, 0.2); color: #95a5a6; }

/* 用户角色与账户状态样式适配 */
.status-badge.admin { background: rgba(231, 76, 60, 0.2); color: #e74c3c; }
.status-badge.super_user { background: rgba(52, 152, 219, 0.2); color: #3498db; }
.status-badge.user { background: rgba(255, 255, 255, 0.1); color: var(--text-dim); }

/* 亮色模式适配 */
body.light-theme .admin-search-panel { background: rgba(0, 0, 0, 0.02); }
body.light-theme .admin-table th { background: rgba(0, 0, 0, 0.03); }
body.light-theme .admin-table tr:hover { background: rgba(0, 0, 0, 0.01); }
body.light-theme .page-btn { background: rgba(0, 0, 0, 0.04); }

/* ==================== Emoji 选择器增强 ==================== */
.emoji-picker-container {
    margin-top: 12px;
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 12px;
    background: rgba(15, 15, 15, 0.4);
    backdrop-filter: blur(10px);
    display: none; 
    flex-direction: column;
    gap: 8px;
    min-height: 260px;
    width: 100%;
    box-sizing: border-box;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.2), 0 10px 30px rgba(0,0,0,0.3);
    animation: fadeInDown 0.3s ease;
}

/* 搜索框增强 */
.emoji-search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 0 12px;
    margin-bottom: 5px;
    transition: all 0.3s;
}

.emoji-search-wrapper:focus-within {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 0 2px rgba(57, 157, 255, 0.2);
}

.emoji-search-wrapper i {
    color: var(--text-dim);
    font-size: 14px;
    margin-right: 8px;
}

.emoji-search-wrapper input {
    flex: 1;
    background: transparent !important;
    border: none !important;
    color: var(--text) !important;
    font-size: 13px;
    padding: 8px 0 !important;
    outline: none !important;
    box-shadow: none !important;
}

.emoji-picker-tabs {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.emoji-picker-tabs {
    display: flex;
    gap: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 12px;
    overflow-x: auto;
    flex-shrink: 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.emoji-picker-tabs::-webkit-scrollbar {
    display: none;
}

.emoji-tab-btn {
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
    cursor: pointer;
    white-space: nowrap;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-dim);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.emoji-tab-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text);
    border-color: rgba(255, 255, 255, 0.2);
}

.emoji-tab-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(57, 157, 255, 0.3);
    transform: translateY(-1px);
}

/* 优化 Emoji 选择器滚动条 - 复用 Modal 规范 */
.emoji-grid::-webkit-scrollbar {
    width: 6px;
}
.emoji-grid::-webkit-scrollbar-track {
    background: transparent;
}
.emoji-grid::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}
.emoji-grid::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

.emoji-grid {
    display: grid !important;
    grid-template-columns: repeat(10, 1fr) !important;
    gap: 8px;
    max-height: 280px;
    overflow-y: auto;
    padding: 12px 5px;
    scrollbar-width: thin;
}

@media (max-width: 600px) {
    .emoji-grid {
        grid-template-columns: repeat(6, 1fr) !important;
        gap: 6px;
    }
}

.emoji-item {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    line-height: 1;
    aspect-ratio: 1 / 1;
    cursor: pointer;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    overflow: hidden;
}

.emoji-item:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 12px rgba(57, 157, 255, 0.4);
    z-index: 2;
}

.emoji-item:active {
    transform: scale(0.95);
}

.emoji-picker-trigger {
    background: rgba(57, 157, 255, 0.15);
    color: var(--primary);
    border: 1px solid rgba(57, 157, 255, 0.3);
    padding: 6px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    margin-left: 10px;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.emoji-picker-trigger:hover {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(57, 157, 255, 0.3);
}