/* ==========================================================================
   BHB健康管理平台 - 主样式表 (重构版)
   使用 CSS 变量管理主题，支持深色模式切换
   ========================================================================== */

/* CSS 变量 - 主题配置 */
:root {
    /* 主色调 */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #4864e2 100%);
    --primary-color: #667eea;
    --primary-dark: #4864e2;
    --primary-light: rgba(102, 126, 234, 0.1);
    --primary-medium: rgba(102, 126, 234, 0.08);

    /* 辅助色 */
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;

    /* 文字颜色 */
    --text-primary: #333;
    --text-secondary: #666;
    --text-muted: #495057;
    --text-light: #fff;

    /* 边框颜色 */
    --border-color: #dee2e6;
    --border-light: #f0f0f0;

    /* 背景色 */
    --bg-white: rgba(255, 255, 255, 0.95);
    --bg-light: rgba(248, 249, 250, 0.8);
    --bg-overlay: rgba(0, 0, 0, 0.5);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-primary: 0 2px 8px rgba(102, 126, 234, 0.2);

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 15px;

    /* 间距 */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 0.75rem;
    --space-lg: 1rem;
    --space-xl: 1.5rem;

    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;

    /* 尺寸 */
    --header-height: 40px;
    --sidebar-width: 248px;
    --sidebar-collapsed-width: 64px;
    --menu-indent-base: 10px;
    --menu-indent-step: 14px;

    /* 字体 */
    --font-family: 'Microsoft YaHei', Arial, sans-serif;
}

/* 基础重置 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: var(--primary-gradient);
    height: 100vh;
    color: var(--text-primary);
    overflow: hidden;
}

/* ==========================================================================
   头部样式
   ========================================================================== */
.header {
    background: var(--bg-white);
    backdrop-filter: blur(10px);
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 var(--space-xl);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: none;
    border-radius: var(--radius-lg);
    background: var(--primary-light);
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 1.1rem;
}

.menu-toggle:hover {
    background: rgba(102, 126, 234, 0.2);
    transform: scale(1.05);
}

.header-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.header-breadcrumb i {
    color: var(--primary-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* 头像账号下拉 */
.user-menu {
    position: relative;
    flex-shrink: 0;
}

.user-menu-trigger {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    border: none;
    background: transparent;
    padding: 2px 4px 2px 2px;
    border-radius: 20px;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.user-menu-trigger:hover,
.user-menu.open .user-menu-trigger {
    background: rgba(102, 126, 234, 0.1);
}

.user-menu-trigger:focus-visible {
    outline: 2px solid rgba(102, 126, 234, 0.45);
    outline-offset: 1px;
}

.user-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-weight: 600;
    font-size: 0.85rem;
    flex-shrink: 0;
    box-shadow: 0 1px 4px rgba(102, 126, 234, 0.35);
}

.user-menu-caret {
    font-size: 0.65rem;
    color: #8a90a0;
    transition: transform var(--transition-fast);
}

.user-menu.open .user-menu-caret {
    transform: rotate(180deg);
    color: var(--primary-color);
}

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 10px;
    box-shadow: 0 8px 28px rgba(15, 23, 42, 0.14);
    padding: 6px;
    z-index: 2000;
    animation: userMenuIn 0.14s ease-out;
}

.user-menu-dropdown[hidden] {
    display: none !important;
}

@keyframes userMenuIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.user-menu-head {
    padding: 8px 10px 10px;
    border-bottom: 1px solid #f0f1f4;
    margin-bottom: 4px;
}

.user-menu-name {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.user-menu-sub {
    margin-top: 2px;
    font-size: 0.72rem;
    color: #8a90a0;
    line-height: 1.3;
}

.user-menu-sep {
    margin: 0 4px;
}

.user-menu-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 8px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    padding: 9px 10px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.84rem;
    text-align: left;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.user-menu-item i {
    width: 16px;
    text-align: center;
    color: #6b7fd7;
    font-size: 0.82rem;
}

.user-menu-item:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.user-menu-item--danger {
    color: #c0392b;
}

.user-menu-item--danger i {
    color: #e74c3c;
}

.user-menu-item--danger:hover {
    background: rgba(231, 76, 60, 0.08);
    color: #a93226;
}

/* 头部最右侧：退出登录（从账号下拉移出） */
.header-logout-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
    margin-left: 2px;
    border: 1px solid rgba(231, 76, 60, 0.28);
    background: rgba(231, 76, 60, 0.06);
    color: #c0392b;
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
    line-height: 1.2;
    white-space: nowrap;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.header-logout-btn i {
    font-size: 0.85rem;
    color: #e74c3c;
}

.header-logout-btn:hover {
    background: rgba(231, 76, 60, 0.12);
    border-color: rgba(231, 76, 60, 0.45);
    color: #a93226;
}

.header-logout-btn:focus-visible {
    outline: 2px solid rgba(231, 76, 60, 0.4);
    outline-offset: 1px;
}

/* 头像旁姓名/科室（桌面） */
.user-meta {
    min-width: 0;
    line-height: 1.25;
}

.user-meta-name {
    font-weight: 600;
    font-size: 0.86rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

.user-meta-sub {
    font-size: 0.72rem;
    color: #888;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}

.user-meta-sep {
    margin: 0 0.35rem;
    color: #dee2e6;
}

/* ==========================================================================
   服务器信息样式
   ========================================================================== */
.server-info {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    margin-left: var(--space-xl);
    padding-left: var(--space-xl);
    position: relative;
}

.server-info::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: rgba(0, 0, 0, 0.1);
}

.server-time {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-muted);
}

.server-time i {
    font-size: 1rem;
    color: var(--primary-color);
}

.time-display {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.current-time {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.current-date {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.server-status {
    display: flex;
    align-items: center;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-light);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.status-dot.online {
    background: var(--success-color);
    box-shadow: 0 0 8px rgba(40, 167, 69, 0.6);
}

.status-dot.offline {
    background: var(--danger-color);
    box-shadow: 0 0 8px rgba(220, 53, 69, 0.6);
}

.status-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* 系统状态岛：服务状态 + 通知铃铛合并 */
.sys-hub {
    position: relative;
}

.sys-hub__cluster {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sys-hub__notice-btn {
    position: relative;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.06);
    background: var(--bg-light);
    color: var(--text-secondary, #5C7A99);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.18s ease;
    font-size: 0.95rem;
    padding: 0;
}

.sys-hub__notice-btn:hover {
    color: var(--primary-color, #E63946);
    border-color: rgba(230, 57, 70, 0.25);
    background: #fff;
    box-shadow: 0 2px 8px rgba(29, 53, 87, 0.08);
}

.sys-hub__notice-btn[data-count]:not([data-count="0"]) {
    color: var(--primary-color, #E63946);
}

.sys-hub__badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: 999px;
    background: #EF4444;
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    line-height: 16px;
    text-align: center;
    display: none;
    box-shadow: 0 0 0 2px #fff;
}

.sys-hub__badge.show {
    display: inline-block;
}

.sys-hub__badge[hidden] {
    display: none !important;
}

/* 有危急值时只改颜色，仍只显示一个角标 */
.sys-hub__badge--crit {
    background: #B91C1C;
}

/* 顶栏下拉面板定位修正（内容由 widget 样式负责） */
.sys-hub .sn-panel--header {
    z-index: 1200;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ==========================================================================
   侧边栏样式（v3：单层缩进 + 折叠 + 搜索）
   ========================================================================== */
.layout-container {
    display: flex;
    height: calc(100vh - var(--header-height));
    margin-top: var(--header-height);
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-white);
    backdrop-filter: blur(10px);
    box-shadow: 2px 0 16px rgba(0, 0, 0, 0.08);
    position: fixed;
    left: 0;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width var(--transition-normal);
    z-index: 1000;
}

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

/* 工具栏：搜索 + 展开/收起（单行，避免第二行大片留白） */
.sidebar-toolbar {
    flex-shrink: 0;
    padding: 8px;
    border-bottom: 1px solid var(--border-light);
    background: linear-gradient(180deg, #fafbff 0%, #fff 100%);
}

.sidebar-toolbar-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.sidebar-search {
    position: relative;
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
}

.sidebar-search-icon {
    position: absolute;
    left: 9px;
    color: #9aa0a6;
    font-size: 0.72rem;
    pointer-events: none;
    z-index: 1;
}

.sidebar-search-input {
    width: 100%;
    height: 30px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0 26px 0 26px;
    font-size: 0.78rem;
    outline: none;
    background: #fff;
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.sidebar-search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.15);
}

.sidebar-search-input::placeholder {
    color: #b0b5bd;
}

.sidebar-search-clear {
    position: absolute;
    right: 4px;
    border: none;
    background: transparent;
    color: #999;
    font-size: 0.95rem;
    line-height: 1;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.sidebar-search-clear:hover {
    background: rgba(0, 0, 0, 0.06);
    color: #333;
}

.sidebar-toolbar-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.sidebar-tool-btn {
    border: 1px solid var(--border-color);
    background: #fff;
    color: var(--text-secondary);
    height: 30px;
    min-width: 0;
    padding: 0 7px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.72rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    white-space: nowrap;
    transition: var(--transition-fast);
    line-height: 1;
}

.sidebar-tool-btn i {
    font-size: 0.7rem;
}

.sidebar-tool-btn span {
    font-size: 0.7rem;
    font-weight: 500;
}

.sidebar-tool-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--primary-light);
}

/* 窄侧栏时只显示图标字 */
@media (max-width: 900px) {
    .sidebar-tool-btn span {
        display: none;
    }
    .sidebar-tool-btn {
        width: 30px;
        padding: 0;
    }
}

.sidebar-menu {
    flex: 1;
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 6px 0 16px;
    scrollbar-width: thin;
    scrollbar-color: rgba(102, 126, 234, 0.35) transparent;
}

.sidebar-menu::-webkit-scrollbar {
    width: 6px;
}

.sidebar-menu::-webkit-scrollbar-thumb {
    background: rgba(102, 126, 234, 0.3);
    border-radius: 3px;
}

/* 折叠态：隐藏文字/搜索，仅图标 */
.sidebar.collapsed .sidebar-toolbar,
.sidebar.collapsed .menu-label,
.sidebar.collapsed .menu-count,
.sidebar.collapsed .category-icon,
.sidebar.collapsed .sub-category-icon,
.sidebar.collapsed .menu-open-link {
    display: none !important;
}

.sidebar.collapsed .category-header,
.sidebar.collapsed .sub-category-header,
.sidebar.collapsed .menu-item {
    justify-content: center;
    padding-left: 0 !important;
    padding-right: 0 !important;
    margin-left: 6px;
    margin-right: 6px;
}

.sidebar.collapsed .category-title,
.sidebar.collapsed .sub-category-title {
    justify-content: center;
    gap: 0;
}

.sidebar.collapsed .category-title i,
.sidebar.collapsed .sub-category-title i,
.sidebar.collapsed .menu-item > i {
    margin-right: 0;
    width: auto;
}

/* 折叠时自动展开子级以便看到图标（仅显示一级叶子较难，保持结构但压缩） */
.sidebar.collapsed .category-items,
.sidebar.collapsed .sub-category-items {
    display: none !important;
}

.sidebar.collapsed .nav-category {
    margin-bottom: 4px;
}

/* 空态 */
.sidebar-empty {
    text-align: center;
    padding: 2rem 1rem;
    color: #999;
}

.sidebar-empty i {
    font-size: 1.6rem;
    margin-bottom: 0.6rem;
    display: block;
}

.sidebar-empty-hint {
    font-size: 0.78rem;
    margin-top: 0.4rem;
    color: #bbb;
}

.sidebar-empty--error {
    color: #dc3545;
}

.sidebar-reload-btn {
    margin-top: 0.8rem;
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
}

/* ==========================================================================
   导航分类 / 单层缩进（--depth）
   ========================================================================== */
.nav-category {
    margin: 0 6px 4px;
}

/* 统一行：仅在此层做 padding-left，子容器不再二次缩进 */
.menu-row {
    display: flex;
    align-items: center;
    gap: 6px;
    min-height: 34px;
    padding: 6px 10px;
    padding-left: calc(var(--menu-indent-base) + (var(--depth, 0) * var(--menu-indent-step)));
    border-radius: var(--radius-md);
    cursor: pointer;
    user-select: none;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.category-header {
    justify-content: space-between;
    font-weight: 600;
    color: #4a56c9;
    font-size: 0.86rem;
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.14) 0%, rgba(102, 126, 234, 0.06) 100%);
    margin-bottom: 2px;
    border: 1px solid rgba(102, 126, 234, 0.12);
    /* 左侧指示器 */
    position: relative;
}

.category-header::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12%;
    bottom: 12%;
    width: 3px;
    border-radius: 0 2px 2px 0;
    opacity: 0.85;
}

.category-header:hover {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.2) 0%, rgba(102, 126, 234, 0.1) 100%);
    border-color: rgba(102, 126, 234, 0.28);
}

.nav-category.expanded > .category-header {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.22) 0%, rgba(102, 126, 234, 0.1) 100%);
    border-color: rgba(102, 126, 234, 0.3);
    box-shadow: 0 1px 4px rgba(102, 126, 234, 0.12);
}

.nav-category.expanded > .category-header::before {
    width: 4px;
    opacity: 1;
    box-shadow: 0 0 8px rgba(102, 126, 234, 0.5);
}

.category-title,
.sub-category-title {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    flex: 1;
}

/* header 中的 gap - title / badge / icon */
.category-header,
.sub-category-header {
    gap: 6px;
}

.category-title > i,
.sub-category-title > i,
.menu-item > i {
    width: 16px;
    flex-shrink: 0;
    text-align: center;
    font-size: 0.85rem;
}

.menu-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.menu-count {
    flex-shrink: 0;
    font-style: normal;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.3px;
    padding: 2px 8px;
    line-height: 1.4;
    color: #a6a6ff;
    /* background: linear-gradient(135deg, #667eea 0%, #e7dcf2 100%); */
    border-radius: 12px;
    /* box-shadow: 0 2px 6px rgba(102, 126, 234, 0.35); */
    transition: all var(--transition-fast);
}

.menu-count:hover {
    transform: scale(1.08);
    box-shadow: 0 3px 10px rgba(102, 126, 234, 0.5);
}

/* 子分类的 menu-count 稍微小一点 */
.sub-category .menu-count {
    font-size: 0.6rem;
    padding: 1.5px 6px;
}

/* 叶子节点 menu-count */
.menu-item .menu-count {
    font-size: 0.6rem;
    padding: 1px 5px;
}

.category-icon,
.sub-category-icon {
    font-size: 0.68rem;
    color: #9aa0a6;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.nav-category.expanded > .category-header .category-icon,
.sub-category.expanded > .sub-category-header .sub-category-icon {
    transform: rotate(90deg);
    color: var(--primary-color);
}

.category-items {
    display: none;
    padding: 2px 0 4px;
}

.nav-category.expanded > .category-items {
    display: block;
}

/* 子分类：容器本身不 padding，缩进只在 header/item 的 --depth */
.sub-category {
    margin: 1px 0;
}

.sub-category-header {
    justify-content: space-between;
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
}

.sub-category-header:hover {
    background: var(--primary-light);
    color: var(--primary-color);
    /* 左侧指示线 */
    position: relative;
}

.sub-category-header:hover::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    bottom: 20%;
    width: 2px;
    background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
    border-radius: 0 1px 1px 0;
}

.sub-category.expanded > .sub-category-header {
    background: rgba(102, 126, 234, 0.08);
}

.sub-category.expanded > .sub-category-header::before {
    width: 3px;
    opacity: 1;
}

.sub-category-items {
    display: none;
}

.sub-category.expanded > .sub-category-items {
    display: block;
}

.menu-open-link {
    border: none;
    background: transparent;
    color: #9aa0a6;
    width: 22px;
    height: 22px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.7rem;
    padding: 0;
}

.menu-open-link:hover {
    background: rgba(102, 126, 234, 0.15);
    color: var(--primary-color);
}

/* ==========================================================================
   叶子菜单项
   ========================================================================== */
.menu-item {
    font-size: 0.84rem;
    color: var(--text-primary);
    font-weight: 450;
    margin: 1px 0;
}

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

.menu-item.active {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.18) 0%, rgba(118, 75, 162, 0.08) 100%);
    color: var(--primary-dark);
    font-weight: 600;
    /* 左侧指示条 + 微光效果 
    box-shadow: inset 3px 0 0 var(--primary-color), inset 0 0 20px rgba(102, 126, 234, 0.08);*/
    position: relative;
}

.menu-item.active::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px 0 0 2px;
    opacity: 0.7;
}

.menu-item.active > i {
    color: var(--primary-dark);
    filter: drop-shadow(0 0 4px rgba(102, 126, 234, 0.4));
}

.menu-item > i {
    color: #6b7fd7;
}

.menu-item.active > i {
    color: var(--primary-dark);
}

.menu-item--root {
    margin: 0 6px 4px;
    font-weight: 600;
    background: var(--primary-light);
    color: var(--primary-color);
}

.menu-item--root:hover,
.menu-item--root.active {
    background: rgba(102, 126, 234, 0.18);
}

/* 手风琴菜单 */
.accordion-item {
    padding: var(--space-sm) var(--space-lg) var(--space-sm) 2.5rem;
    position: relative;
    transition: var(--transition-normal);
}

.accordion-item:hover {
    background: var(--primary-medium);
}

.accordion-item.active {
    background: rgba(102, 126, 234, 0.12);
    background: var(--primary-gradient) 2px, rgba(102, 126, 234, 0.12) 100%;
    color: var(--primary-color);
}

/* ==========================================================================
   主内容区域
   ========================================================================== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-normal);
    height: calc(100vh - var(--header-height));
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.main-content.expanded {
    margin-left: var(--sidebar-collapsed-width);
}

/* ==========================================================================
   标签页框架
   ========================================================================== */
.tab-container {
    background: var(--bg-white);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.tab-container.ybzsm-trace-role .tab-pane[data-tab-id="home"] {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

/* Tab 导航：扁平细条（明显压矮，接近浏览器标签栏） */
.tab-nav {
    display: flex;
    align-items: stretch;
    background: #eef1f5;
    border-bottom: 1px solid var(--border-color);
    padding: 0 4px;
    gap: 0;
    height: 32px;
    min-height: 32px;
    max-height: 32px;
    position: relative;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    z-index: 100;
    flex-shrink: 0;
}

.tab-items-container {
    display: flex;
    align-items: stretch;
    gap: 0;
    overflow-x: auto;
    overflow-y: hidden;
    flex: 1;
    min-height: 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
    scroll-behavior: smooth;
    scroll-snap-type: none;
}

.tab-items-container::-webkit-scrollbar,
.tab-nav::-webkit-scrollbar {
    display: none;
}

/* 标签项：无卡片感、无阴影，高度贴栏 */
.tab-item {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 8px;
    margin: 0;
    background: transparent;
    border: none;
    border-right: 1px solid #dde2ea;
    border-radius: 0;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
    white-space: nowrap;
    min-width: 72px;
    max-width: 140px;
    height: 100%;
    box-sizing: border-box;
    font-size: 14px;
    line-height: 1;
    color: var(--text-muted);
    flex-shrink: 0;
    user-select: none;
    box-shadow: none !important;
}

.tab-item:hover {
    background: rgba(255, 255, 255, 0.7);
    border-color: #dde2ea;
    color: var(--primary-color);
}

.tab-item.active {
    background: #fff;
    border-color: #dde2ea;
    color: var(--primary-color);
    font-weight: 600;
    box-shadow: none !important;
    border-bottom: 2px solid var(--primary-color);
}

.tab-icon {
    font-size: 13px;
    width: 14px;
    text-align: center;
    flex-shrink: 0;
    opacity: 0.85;
}

.tab-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.tab-close {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    opacity: 0.55;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.tab-item.active .tab-close {
    background: transparent;
    opacity: 0.7;
}

.tab-item.active .tab-close:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.06);
    color: var(--danger-color);
}

.tab-item:not(.active) .tab-close {
    background: transparent;
    color: var(--text-secondary);
}

.tab-item:not(.active) .tab-close:hover {
    background: rgba(220, 53, 69, 0.12);
    color: var(--danger-color);
    opacity: 1;
}

/* 标签页控制按钮 */
.tab-nav-controls {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-left: auto;
    padding: 0 0 0 6px;
    flex-shrink: 0;
    background: transparent;
    border-radius: 0;
    align-self: center;
}

.tab-control-btn {
    width: 22px;
    height: 22px;
    border: none;
    background: transparent;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
    font-size: 11px;
    color: var(--text-muted);
}

.tab-control-btn:hover {
    background: rgba(0, 0, 0, 0.06);
    border-color: transparent;
    color: var(--primary-color);
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background: rgba(102, 126, 234, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 10px;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 10;
}

.scroll-indicator.left { left: 5px; }
.scroll-indicator.right { right: 5px; }
.scroll-indicator.visible { opacity: 1; }

/* 标签页内容 */
.tab-content {
    flex: 1;
    min-height: 0;
    position: relative;
    overflow: hidden;
}

.tab-pane {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal);
    overflow: hidden;
}

.tab-pane.active {
    opacity: 1;
    visibility: visible;
}

.tab-pane iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: #fff;
}

/* ==========================================================================
   首页内容
   ========================================================================== */
.home-tab-content {
    padding: var(--space-xl);
    overflow-y: auto;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.module-card {
    background: var(--bg-white);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.module-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.module-header {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.module-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-light);
}

.module-icon .emoji-icon {
    font-size: 1.5rem;
}

.module-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.module-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: var(--space-lg);
}

.module-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.feature-tag {
    background: var(--primary-light);
    color: var(--primary-color);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-xl);
    font-size: 0.8rem;
    font-weight: 500;
}

.no-permissions {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-xl);
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-xl);
    border: 2px dashed var(--border-color);
}

/* ==========================================================================
   按钮样式
   ========================================================================== */
.btn {
    padding: var(--space-sm) var(--space-lg);
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    transition: var(--transition-normal);
    font-size: 0.9rem;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-light);
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

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

.btn-secondary:hover {
    background: rgba(102, 126, 234, 0.2);
}

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

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

/* ==========================================================================
   模态框样式
   ========================================================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-overlay);
    z-index: 2000;
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;
    border-radius: var(--radius-xl);
    width: 400px;
    padding: var(--space-xl);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: var(--space-sm);
    border: 1px solid #ddd;
    border-radius: var(--radius-lg);
    outline: none;
    transition: border-color var(--transition-normal);
    font-size: 0.9rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

/* ==========================================================================
   标签页管理模态框
   ========================================================================== */
.tab-manager-stats {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding: var(--space-lg);
    background: #f8f9fa;
    border-radius: var(--radius-md);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
}

.tab-manager-actions {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.tab-manager-actions .btn {
    flex: 1;
    min-width: 120px;
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.9rem;
}

.tab-list {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.tab-list-item {
    display: flex;
    align-items: center;
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.tab-list-item:hover {
    background: rgba(102, 126, 234, 0.05);
}

.tab-list-item.active {
    background: var(--primary-light);
}

.tab-list-item:last-child {
    border-bottom: none;
}

.tab-list-icon {
    width: 20px;
    margin-right: var(--space-md);
    color: var(--primary-color);
}

.tab-list-title {
    flex: 1;
    font-weight: 500;
}

.tab-list-actions {
    display: flex;
    gap: var(--space-xs);
}

.tab-list-btn {
    width: 24px;
    height: 24px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    transition: var(--transition-fast);
}

.tab-list-btn:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

.tab-list-btn.close:hover {
    background: rgba(220, 53, 69, 0.2);
    color: var(--danger-color);
}

/* ==========================================================================
   所有标签菜单
   ========================================================================== */
.all-tabs-menu {
    position: fixed;
    top: 80px;
    right: 20px;
    background: var(--bg-white);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 1001;
    width: 300px;
    max-height: 400px;
    display: none;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from { transform: translateX(20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.all-tabs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--text-primary);
}

.all-tabs-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
}

.all-tabs-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.all-tabs-list {
    max-height: 320px;
    overflow-y: auto;
    padding: var(--space-sm);
}

.all-tab-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    margin-bottom: var(--space-xs);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    color: var(--text-muted);
    user-select: none;
}

.all-tab-item:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

.all-tab-item.active {
    background: rgba(102, 126, 234, 0.2);
    color: var(--primary-color);
}

.all-tab-icon {
    width: 16px;
    text-align: center;
    font-size: 0.8rem;
}

.all-tab-title {
    flex: 1;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.all-tab-close {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    cursor: pointer;
    font-size: 0.7rem;
    transition: var(--transition-fast);
}

.all-tab-close:hover {
    background: rgba(220, 53, 69, 0.2);
}

/* ==========================================================================
   标签页数量限制提示
   ========================================================================== */
.tab-limit-warning {
    position: fixed;
    top: 60px;
    right: 20px;
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-md);
    z-index: 1001;
    animation: slideInRight 0.3s ease;
    display: none;
}

/* ==========================================================================
   响应式设计
   ========================================================================== */
@media (max-width: 768px) {
    .header {
        height: 60px;
        padding: 0 var(--space-lg);
    }

    .header-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        height: 100%;
        gap: var(--space-sm);
    }

    .header-left {
        gap: var(--space-md);
        align-items: center;
        flex: 1;
        min-width: 0;
    }

    .logo {
        font-size: 1rem;
        gap: var(--space-sm);
        flex-shrink: 0;
        min-width: 0;
    }

    .logo span {
        font-size: 0.9rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 150px;
    }

    .menu-toggle {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
        flex-shrink: 0;
    }

    .header-breadcrumb {
        display: none;
    }

    .user-info {
        flex-direction: row;
        justify-content: flex-end;
        align-items: center;
        gap: var(--space-sm);
        flex-wrap: nowrap;
        flex-shrink: 0;
        min-width: 0;
    }

    .user-meta {
        display: none;
    }

    .user-avatar {
        width: 28px;
        height: 28px;
        font-size: 0.8rem;
        flex-shrink: 0;
    }

    .user-menu-dropdown {
        right: 0;
        min-width: 168px;
    }

    .server-info {
        display: none;
    }

    .main-content {
        margin-left: 0;
        padding: var(--space-sm);
        height: calc(100vh - 60px);
        margin-top: 60px;
        display: flex;
        flex-direction: column;
        min-height: 0;
    }

    .sidebar {
        display: none;
    }

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

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

    .tab-nav {
        height: 32px;
        min-height: 32px;
        max-height: 32px;
        padding: 0 2px;
    }

    .tab-item {
        min-width: 64px;
        max-width: 110px;
        padding: 0 6px;
        font-size: 14px;
    }

    .tab-item .tab-title {
        max-width: 48px;
    }

    .tab-control-btn {
        width: 20px;
        height: 20px;
        font-size: 10px;
    }

    .tab-nav-controls {
        padding-left: 4px;
        gap: 1px;
    }

    .home-tab-content {
        padding: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .header {
        height: 60px;
        padding: 0 0.75rem;
    }

    .logo span {
        max-width: 120px;
        font-size: 0.85rem;
    }

    .menu-toggle {
        width: 28px;
        height: 28px;
        font-size: 0.8rem;
    }

    .header-logout-btn span {
        display: none;
    }

    .header-logout-btn {
        padding: 6px 8px;
    }

    .user-info {
        gap: var(--space-xs);
    }

    .user-avatar {
        width: 24px;
        height: 24px;
        font-size: 0.7rem;
    }

    .user-menu-caret {
        display: none;
    }
}

/* ==========================================================================
   分类内容页样式 - 门户导航效果
   ========================================================================== */
.category-content-page {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #f5f6f8;
    overflow-y: auto;
    padding: 1.5rem;
    z-index: 10;
}

.category-content-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e9ecef;
}

.category-content-icon {
    width: 32px;
    height: 32px;
    border-radius: 0;
    background: transparent;
    border: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.15rem;
}

.category-content-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.category-content-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.category-content-close {
    margin-left: auto;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: var(--radius-md);
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.category-content-close:hover {
    background: rgba(220, 53, 69, 0.2);
    color: #c82333;
}

.category-sub-group {
    margin-bottom: 2rem;
}

.category-sub-group-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.category-sub-group-title i {
    color: var(--primary-color);
}

.category-function-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.category-function-card {
    background: white;
    border-radius: 10px;
    padding: 1.25rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    cursor: pointer;
    transition: all 0.25s ease;
    border: 1px solid transparent;
}

.category-function-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.3);
}

.category-function-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.category-function-card-icon {
    width: 28px;
    height: 28px;
    border-radius: 0;
    background: transparent;
    border: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: .9rem;
}

.category-function-card-title {
    flex: 1;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
}

.category-function-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.category-function-card-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
    color: #999;
}

.category-function-card-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}