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

body {
    background: linear-gradient(135deg, #f0f4ff 0%, #f5e6ff 100%);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    height: 100vh;
    overflow: hidden;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

.navbar-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
}

/* 品牌区域 */
.navbar-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-logo i {
    font-size: 20px;
    color: #ea6666;
}

.brand-text {
    font-size: 18px;
    font-weight: 700;
    color: #2d3748;
    letter-spacing: -0.5px;
}

.brand-pro {
    display: none;  /* 默认隐藏 */
    background: linear-gradient(135deg, #d4a373, #b08d55);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.brand-tagline {
    font-size: 11px;
    color: #718096;
    margin-top: 2px;
}

/* 会员金色图标 */
.navbar-member .brand-logo i {
    color: #d4a373;
}

/* 会员时显示 Pro */
.navbar-member .brand-pro {
    display: inline-block;
}

/* 导航菜单 */
.navbar-actions .navbar-menu {
    display: flex;
    gap: 6px;
    margin-right: 14px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 10px;
    text-decoration: none;
    color: #4a5568;
    font-weight: 500;
    font-size: 13px;
    transition: all 0.2s ease;
}

.nav-item:hover {
    background: rgba(31, 41, 55, 0.1);
    color: #1f2937;
}

.nav-item.active {
    background: #1f2937;
    color: white;
}

.nav-item.active:hover {
    color: white;
}

.nav-item i {
    font-size: 14px;
}

/* 右侧操作区 */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

/* 搜索框 */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 10px;
    color: #a0aec0;
    font-size: 13px;
}

.search-box input {
    width: 190px;
    padding: 6px 10px 6px 32px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #f7fafc;
    font-size: 13px;
    color: #2d3748;
    transition: all 0.2s ease;
}

.search-box input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    width: 220px;
}

.search-box input::placeholder {
    color: #a0aec0;
}

/* 操作按钮 */
.action-btn {
    position: relative;
    width: 34px;
    height: 34px;
    border: none;
    border-radius: 10px;
    background: #f7fafc;
    color: #4a5568;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-btn:hover {
    background: #edf2f7;
    color: #667eea;
}

.notification-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 18px;
    height: 18px;
    background: #f56565;
    color: white;
    border-radius: 50%;
    font-size: 10px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid white;
}

/* 用户菜单 */
.user-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 8px;
    border-radius: 8px;
    background: #f8fafc;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    border: 1px solid #e2e8f0;
}

.user-menu:hover {
    background: #f1f5f9;
    border-color: #cbd5e0;
}

/* 导航栏用户头像 - 更具体的选择器避免被覆盖 */
.navbar .user-avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 11px;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(238, 90, 36, 0.3);
}

.user-avatar img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: cover;
}

/* 导航栏用户名 - 更具体的选择器避免被覆盖 */
.navbar .user-name {
    font-weight: 600;
    color: #1a202c;
    font-size: 13px;
}

.user-menu i {
    font-size: 10px;
    color: #718096;
    transition: transform 0.2s ease;
}

.user-menu.active i {
    transform: rotate(180deg);
}

/* 用户下拉菜单 */
.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    width: 160px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.06);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.15s ease;
    z-index: 1001;
}

.user-menu.active .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    color: #374151;
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s ease;
}

.dropdown-item:hover {
    background: rgba(102, 126, 234, 0.06);
    color: #667eea;
}

.dropdown-item i {
    font-size: 14px;
    color: #9ca3af;
    width: 14px;
}

.dropdown-item:hover i {
    color: #667eea;
}

.dropdown-item.logout {
    color: #ef4444;
}

.dropdown-item.logout:hover {
    background: rgba(239, 68, 68, 0.06);
    color: #ef4444;
}

.dropdown-item.logout i {
    color: #ef4444;
}

.dropdown-divider {
    height: 1px;
    background: rgba(0, 0, 0, 0.06);
    margin: 2px 0;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .file-container {
        width: 20%;
        min-width: 200px;
    }

    .contacts-container {
        width: 25%;
        min-width: 220px;
    }
}

@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
        gap: 10px;
        padding-top: 60px;
    }

    .file-toggle {
        display: none;
    }

    .file-container {
        width: 100%;
        height: 200px;
        min-width: unset;
        order: 2;
    }

    .contacts-container {
        width: 100%;
        height: 200px;
        min-width: unset;
        margin: 0;
        order: 1;
    }

    .chat-container {
        order: 3;
        flex: 1;
        height: calc(100vh - 420px);
    }

    .navbar-container {
        padding: 0 16px;
    }

    .navbar-menu {
        display: none;
    }

    .search-box input {
        width: 120px;
    }

    .search-box input:focus {
        width: 160px;
    }

    .user-name {
        display: none;
    }

    .brand-tagline {
        display: none;
    }
}

@media (max-width: 480px) {
    .search-box {
        display: none;
    }

    .navbar-container {
        padding: 0 12px;
    }

    .file-container {
        height: 150px;
    }

    .contacts-container {
        height: 150px;
    }

    .chat-container {
        height: calc(100vh - 320px);
    }
}

/* 粒子背景 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 50%;
    animation: float 15s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    33% {
        transform: translateY(-100px) translateX(50px);
    }
    66% {
        transform: translateY(50px) translateX(-50px);
    }
}

/* 主容器 */
.main-container {
    display: flex;
    height: 100vh;
    gap: 0;
    padding: 10px;
    padding-top: 58px; /* 为导航栏留出空间 */
}

.main-container.file-collapsed {
    gap: 0;
}

/* 左侧文件区域 */
.file-container {
    width: 21%;
    min-width: 220px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width 0.2s ease, min-width 0.2s ease, opacity 0.2s ease;
}

.main-container.file-collapsed .file-container {
    width: 0;
    min-width: 0;
    opacity: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
    pointer-events: none;
}

.main-container.file-collapsed .right-container {
    width: calc(100% - 12px);
    flex: 1;
}

.file-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 12px;
    padding: 0;
}

.file-toggle-btn {
    width: 14px;
    height: 72px;
    border-radius: 999px;
    border: 1px solid rgba(17, 24, 39, 0.1);
    background: linear-gradient(180deg, rgba(17, 24, 39, 0.92), rgba(55, 65, 81, 0.92));
    color: #f9fafb;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    padding: 0;
}

.file-toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.2);
}

.main-container.file-collapsed .file-toggle-btn {
    background: linear-gradient(180deg, rgba(15, 118, 110, 0.9), rgba(14, 116, 144, 0.9));
}

.file-header {
    padding: 8px 12px;
    background: linear-gradient(135deg, #111827 0%, #374151 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.file-tree-context {
    position: absolute;
    z-index: 30;
    min-width: 180px;
}

/* 会话名称 */
.conversation-name {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    color: white;
    font-size: 15px;
    font-weight: 500;
}

.file-tree-empty {
    padding: 14px 12px;
    color: #6b7280;
}

.file-tree-empty-text {
    font-size: 13px;
}
.conversation-name i {
    opacity: 0.9;
}
  
.file-header h2 {
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.file-tabs {
    display: flex;
    gap: 10px;
}

.file-tab {
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 20px;
    color: white;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 12px;
}

.file-tab.active {
    background: rgba(255, 255, 255, 0.3);
}

.file-tab:hover {
    background: rgba(255, 255, 255, 0.4);
}

/* 文件树样式 */
.file-tree {
    flex: 1;
    padding: 10px;
    overflow-y: auto;
    background: #fafbfc;
}

.file-tree.drag-root {
    outline: 2px dashed rgba(14, 116, 144, 0.4);
    outline-offset: -6px;
}

/* 头部操作按钮 */
.header-action-btn {
    width: 26px;
    height: 26px;
    background: rgba(255, 255, 255, 0.3);
    border: none;
    color: white;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-action-btn:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

/* IDE风格的文件树 */
.tree-item {
    user-select: none;
}

.tree-item-content {
    display: flex;
    align-items: center;
    padding: 6px 10px;
    cursor: pointer;
    border-radius: 6px;
    transition: background-color 0.2s;
    position: relative;
    height: 28px;
}

.tree-item-content[draggable="true"] {
    color: inherit;
}

.tree-item.dragging .tree-item-content {
    opacity: 0.5;
}

.tree-item.drop-target > .tree-item-content {
    background-color: rgba(14, 116, 144, 0.12);
}

.tree-item-content:hover {
    background-color: rgba(0, 0, 0, 0.04);
}

.tree-item-content::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 3px;
    border-radius: 2px;
    background: rgba(14, 116, 144, 0.6);
    opacity: 0;
    transition: opacity 0.15s ease;
}

.tree-item-content:hover::before {
    opacity: 1;
}

.tree-item-content.selected {
    background-color: rgba(102, 126, 234, 0.1);
}

.tree-arrow {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    font-size: 12px;
    transition: transform 0.2s;
    flex-shrink: 0;
}

.tree-arrow.expanded {
    transform: rotate(90deg);
}

.tree-item.folder > .tree-item-content .tree-arrow {
    margin-right: 2px;
}

.tree-item.file > .tree-item-content .tree-arrow {
    visibility: hidden;
}

.tree-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 8px;
    flex-shrink: 0;
}

/* 传统文件图标颜色 - Queen Bee AI 版本 */

/* 文件夹图标 - 经典黄色 */
.icon-folder { color: #fbbf24; }
.icon-folder-open { color: #fbbf24; }
.icon-skill-pack { color: #ef4444 !important; }

/* 编程语言图标 */
.icon-code { color: #6366f1; }
.icon-js { color: #f7df1e; }
.icon-ts { color: #3178c6; }
.icon-py { color: #3776ab; }
.icon-java { color: #f89820; }
.icon-cpp { color: #00599c; }

/* Web开发图标 */
.icon-html { color: #e34c26; }
.icon-css { color: #1572b6; }

/* 配置和数据文件 */
.icon-json { color: #000000; }
.icon-config { color: #6b7280; }

/* 文档文件 */
.icon-md { color: #083fa1; }
.icon-txt { color: #6b7280; }

/* 媒体文件 */
.icon-image { color: #10b981; }
.icon-video { color: #ef4444; }
.icon-audio { color: #8b5cf6; }

/* PDF文件 */
.icon-pdf { color: #dc2626; }

/* 压缩文件 */
.icon-zip { color: #f59e0b; }

/* 可执行文件 */
.icon-exe { color: #6b7280; }

/* Office文件 */
.icon-word { color: #2563eb; }
.icon-excel { color: #16a34a; }
.icon-ppt { color: #f97316; }

/* 默认文件图标 */
.icon-file { color: #6b7280; }
.icon-default { color: #6b7280; }

/* 为所有图标添加简单的过渡效果 */
.tree-icon i {
    transition: opacity 0.2s ease;
}

.tree-item:hover .tree-icon i {
    opacity: 0.8;
}

.tree-label {
    flex: 1;
    font-size: 14px;
    color: #374151;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tree-children {
    margin-left: 20px;
    display: none;
}

.tree-item.expanded > .tree-children {
    display: block;
}

/* 文件操作菜单 */
.file-menu {
    position: absolute;
    left: 80px;
    top: 0;
    display: none;
    background: white;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    padding: 4px;
    z-index: 10;
    min-width: 120px;
    border: 1px solid #e0e0e0;
}

/* 右键菜单显示 */
.tree-item-content .file-menu.visible {
    display: block;
}

.menu-item {
    padding: 6px 12px;
    cursor: pointer;
    border-radius: 4px;
    font-size: 13px;
    color: #4b5563;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    transition: all 0.2s;
}

.menu-item:hover {
    background-color: #f3f4f6;
    color: #1f2937;
}

.menu-item i {
    width: 14px;
    text-align: center;
}

/* 文件预览模态框 */
.preview-modal.hidden {
    display: none;
}

.preview-modal {
    position: fixed;
    inset: 0;
    z-index: 3000;
}

.preview-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(2px);
}

.preview-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 1160px;
    height: 94vh;
    background: #f8fafc;
    border-radius: 16px;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.22);
    border: 1px solid rgba(148, 163, 184, 0.35);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.preview-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid rgba(226, 232, 240, 0.9);
    background: linear-gradient(135deg, #eef2ff 0%, #f8fafc 60%);
}

.preview-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: #111827;
    flex: 1;
    font-size: 13px;
}

.preview-close {
    border: none;
    background: rgba(15, 23, 42, 0.08);
    font-size: 18px;
    cursor: pointer;
    color: #334155;
    width: 24px;
    height: 24px;
    border-radius: 8px;
    display: grid;
    place-items: center;
}

.preview-close:hover {
    color: #0f172a;
    background: rgba(15, 23, 42, 0.15);
}

.preview-body {
    flex: 1;
    overflow: auto;
    overflow-x: hidden;
    padding: 0;
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
}

.preview-body.editor-mode {
    overflow: hidden;
}


.preview-body.iframe-mode {
    padding: 0;
    overflow: hidden;
}

.preview-body pre {
    background: #f8fafc;
    color: #111827;
    padding: 16px;
    border-radius: 10px;
    border: 1px solid #e5e7eb;
    overflow: auto;
}

.file-editor {
    width: calc(100% - 24px);
    margin: 12px;
    height: calc(100% - 24px);
    min-height: 0;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 12px;
    font-size: 13px;
    line-height: 1.6;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    color: #111827;
    background: #ffffff;
    resize: none;
    overflow: auto;
}

.preview-body img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.pdf-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pdf-pages {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.pdf-page {
    display: flex;
    justify-content: center;
    padding: 0;
    width: 100%;
}

.pdf-canvas {
    background: #ffffff;
    border-radius: 0;
    box-shadow: none;
    border: none;
    display: block;
}

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

.preview-loading {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #4b5563;
}

/* 新建AI助手弹窗 */
.qb-modal {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qb-modal.hidden {
    display: none;
}

.qb-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
}

.qb-modal-content {
    position: relative;
    background: #ffffff;
    width: min(720px, 92vw);
    max-height: 88vh;
    border-radius: 16px;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.qb-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid #e5e7eb;
    background: linear-gradient(135deg, #eef2ff 0%, #f5f3ff 100%);
}

.qb-modal-title {
    font-size: 16px;
    font-weight: 600;
    color: #1f2937;
}

.qb-modal-close {
    border: none;
    background: transparent;
    font-size: 22px;
    cursor: pointer;
    color: #6b7280;
}

.qb-modal-body {
    padding: 18px 20px;
    overflow-y: auto;
}

.qb-modal-footer {
    padding: 14px 20px;
    border-top: 1px solid #e5e7eb;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background: #fafafa;
}

.qb-form-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.qb-form-row label {
    font-size: 13px;
    color: #374151;
}

.qb-form-row input,
.qb-form-row textarea {
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background: #fff;
}

.qb-form-row textarea {
    resize: vertical;
    line-height: 1.6;
}

.qb-form-row input:focus,
.qb-form-row textarea:focus {
    border-color: #93a0ea;
    box-shadow: 0 0 0 3px rgba(147, 160, 234, 0.2);
}

.qb-cwd-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.qb-cwd-row input {
    flex: 1;
}

.qb-btn {
    border: none;
    background: #3f5eea;
    color: #fff;
    padding: 8px 16px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.qb-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(63, 94, 234, 0.2);
}

.qb-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.qb-btn-secondary {
    background: #e5e7eb;
    color: #374151;
}

.qb-form-hint {
    font-size: 12px;
    color: #6b7280;
}

.qb-form-alert {
    font-size: 12px;
    color: #ef4444;
}

/* 发布技能弹窗 */
.skill-publish-modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1200;
}

.skill-publish-modal:not(.hidden) {
    display: flex;
}

.skill-publish-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(6px);
}

.skill-publish-card {
    position: relative;
    width: min(1120px, 94vw);
    height: min(820px, 92vh);
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 40px 80px rgba(15, 23, 42, 0.25);
    z-index: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.skill-publish-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    border-bottom: 1px solid #e5e7eb;
    background: #f8fafc;
}

.skill-publish-title {
    font-size: 18px;
    font-weight: 600;
    color: #111827;
}

.skill-publish-close {
    border: none;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.08);
    color: #1f2937;
    cursor: pointer;
}

.skill-publish-body {
    flex: 1;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 0;
    overflow: hidden;
}

.publish-media {
    padding: 0;
    background: linear-gradient(160deg, #f8fafc 0%, #eef2f7 100%);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.publish-editor-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.publish-editor-toolbar {
    padding: 16px 20px;
    background: #ffffff;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    display: flex;
    align-items: center;
    gap: 12px;
}

.editor-hint {
    font-size: 14px;
    font-weight: 600;
    color: #1f2937;
    display: flex;
    align-items: center;
    gap: 8px;
}

.editor-hint i {
    color: #8b5cf6;
}

.publish-editor-wrapper {
    flex: 1;
    padding: 5px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.publish-content-editor {
    flex: 1;
    width: 100%;
    min-height: 400px;
    max-height: 100%;
    padding: 20px;
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.8;
    color: #1f2937;
    overflow-y: auto;
    outline: none;
    resize: none;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
    transition: border-color 0.2s, box-shadow 0.2s;
    caret-color: #1f2937;
    cursor: default;
}

.publish-content-editor:focus {
    border-color: #8b5cf6;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.15);
}

.publish-content-editor:empty:before {
    content: attr(data-placeholder);
    color: #9ca3af;
    pointer-events: none;
}

.publish-content-editor img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 12px 0;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.1);
}

.publish-content-editor pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 12px 0;
    font-family: 'Consolas', 'Monaco', monospace;
}

.publish-content-editor code {
    background: #f1f5f9;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    color: #dc2626;
    font-size: 0.9em;
}

.publish-content-editor pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

.publish-gallery {
    display: none;
}

.publish-image-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 10px;
    box-shadow: 0 16px 30px rgba(15, 23, 42, 0.12);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.publish-image-frame {
    width: 100%;
    aspect-ratio: 1035 / 1252;
    border-radius: 12px;
    background: #f1f5f9;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.publish-image-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform-origin: center center;
}

.publish-image-tools {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.publish-adjust {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0;
    background: #eef2f7;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 999px;
    padding: 2px;
}

.adjust-btn {
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 999px;
    background: transparent;
    color: #334155;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.adjust-btn:hover {
    background: #ffffff;
    color: #111827;
}

.adjust-btn:active {
    transform: scale(0.96);
}

.publish-image-remove {
    border: none;
    background: #f1f5f9;
    color: #ef4444;
    border-radius: 8px;
    width: 28px;
    height: 28px;
    cursor: pointer;
}

.publish-form {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    overflow: auto;
}

.publish-form label {
    font-weight: 600;
    color: #111827;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.publish-form label i {
    color: #111827;
    font-size: 13px;
}

#publishDesc {
    min-height: 220px;
    resize: vertical;
}

.publish-skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    max-height: 110px;
    overflow: auto;
    padding-right: 4px;
}

.publish-skill-option {
    border: 1px solid #e5e7eb;
    background: #f8fafc;
    padding: 8px 12px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 12px;
    color: #1f2937;
}

.publish-skill-option.active {
    background: #111827;
    color: #ffffff;
    border-color: #111827;
}

.publish-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    max-height: 96px;
    overflow: auto;
    padding-right: 4px;
}

.publish-tag {
    border: 1px solid #e5e7eb;
    background: #ffffff;
    padding: 8px 12px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 12px;
    color: #1f2937;
}

.publish-tag.active {
    background: #111827;
    color: #ffffff;
    border-color: #111827;
}

.skill-publish-footer {
    padding: 16px 24px;
    border-top: 1px solid #e5e7eb;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background: #f8fafc;
}

.skill-publish-footer .qb-btn {
    background: #111827;
    color: #ffffff;
    border-radius: 999px;
    padding: 10px 20px;
    box-shadow: 0 12px 20px rgba(15, 23, 42, 0.18);
}

.skill-publish-footer .qb-btn-secondary {
    background: #e5e7eb;
    color: #374151;
    box-shadow: none;
}

@media (max-width: 900px) {
    .skill-publish-card {
        height: min(860px, 92vh);
    }

    .skill-publish-body {
        grid-template-columns: 1fr;
    }
}

/* 中间好友列表 */
.contacts-container {
    width: 22%;
    min-width: 200px;
    background: transparent;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-right: 1px solid #e5e7eb;
    padding-right: 0;
    margin-right: 0;
    position: relative;
    z-index: 0;
}

/* 好友列表头部 */
.contacts-header {
    padding: 10px 12px;
    background: linear-gradient(135deg, #111827 0%, #374151 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    border-top-left-radius: 15px;
}

.contacts-title {
    font-size: 14px;
    font-weight: 600;
}

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

.contact-action-btn {
    width: 24px;
    height: 24px;
    border: none;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 11px;
}

.contact-action-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 搜索栏 */
.search-bar {
    padding: 8px 12px;
    border-bottom: 1px solid #e5e7eb;
    flex-shrink: 0;
}

.search-input {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 13px;
    outline: none;
}

.search-input:focus {
    border-color: #98a7e9;
    box-shadow: 0 0 0 2px rgba(152, 167, 233, 0.2);
}

/* 新增菜单 */
.add-menu {
    position: absolute;
    top: 52px;
    right: 12px;
    min-width: 160px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.12);
    padding: 6px 0;
    z-index: 30;
}

.add-item {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: background 0.2s ease;
    color: #374151;
}

.add-item:hover {
    background: #f9fafb;
}

.add-item i {
    width: 18px;
    text-align: center;
    color: #98a7e9;
}

.add-item span {
    font-size: 14px;
}

/* 好友列表 */
.contacts-list {
    flex: 1;
    overflow-y: auto;
    background: #fafbfc;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 1px solid #f3f4f6;
    position: relative;
}

.contact-item:hover {
    background: white;
}

.contact-item.active {
    background: linear-gradient(135deg, rgba(152, 167, 233, 0.1) 0%, rgba(186, 180, 193, 0.1) 100%);
    border-left: 3px solid #98a7e9;
}

.contact-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
    box-shadow: 0 2px 4px rgba(251, 191, 36, 0.2);
}

.contact-info {
    flex: 1;
    min-width: 0;
}

.contact-name {
    font-size: 13px;
    font-weight: 500;
    color: #1f2937;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.contact-status {
    font-size: 11px;
    color: #6b7280;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.contact-time {
    font-size: 10px;
    color: #9ca3af;
    flex-shrink: 0;
}

.unread-badge {
    min-width: 18px;
    height: 18px;
    padding: 0 6px;
    border-radius: 999px;
    background: #ef4444;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(239, 68, 68, 0.25);
}

/* 右侧合并区域：好友列表 + 聊天区域 */
.right-container {
    width: 75%;
    flex: 1;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    overflow: visible;
    position: relative;
    z-index: 0;
}

/* 右侧聊天区域 */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: visible;
    position: relative;
    z-index: 10;
}


.chat-header {
    padding: 4px 10px;
    background: linear-gradient(135deg, #111827 0%, #374151 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    border-top-right-radius: 15px;
    min-height: 44px;
}

/* 确保聊天头部头像始终有固定尺寸 */
.chat-header-avatar {
    width: 32px !important;
    height: 32px !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex-shrink: 0;
    background: linear-gradient(135deg, #98a7e9 0%, #bab4c1 100%) !important;
}

.chat-header-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 24px;
    margin-left: 12px;
}

.chat-header h2 {
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    line-height: 1.2;
}

.chat-subtitle {
    font-size: 10px;
    opacity: 0.8;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 1px;
    line-height: 1.2;
    min-height: 10px;
}

.chat-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.header-settings {
    position: relative;
    display: flex;
    align-items: center;
}

/* 用户信息样式 */
.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: 20px;
    padding-left: 20px;
    border-left: 1px solid rgba(255, 255, 255, 0.3);
}

.user-name {
    color: white;
    font-size: 14px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
}

.user-avatar:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

.chat-action-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-action-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.chat-header-avatar i {
    font-size: 13px;
}

/* 聊天消息区域 */
.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f8f9fc;
}

.message {
    display: flex;
    margin-bottom: 20px;
    animation: fadeIn 0.5s ease-out;
}

.message.user {
    justify-content: flex-end;
}

.message.assistant {
    justify-content: flex-start;
}

.message.user .message-content {
    background: #e1e1e1;
    color: #1f2937;
    max-width: fit-content;
    min-width: 60px;
}

/* AI助手消息容器 - 简洁版 */
.message.assistant .assistant-message {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* AI助手名称和状态 - 横向排列，中间用横线分隔 */
.assistant-info {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    margin-bottom: 2px;
}

.assistant-name {
    font-weight: 500;
    color: #333;
    display: flex;
    align-items: center;
    gap: 3px;
}

.assistant-name i {
    font-size: 10px;
    color: #fbbf24;
}

.assistant-status {
    font-size: 12px;
    color: #999;
}

.assistant-name::after {
    content: "·";
    margin: 0 2px;
    color: #ccc;
}

/* 不同智能体的头像样式 */
.assistant-avatar.queen-bee {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
}

.assistant-avatar.code-expert {
    background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
}

.assistant-avatar.data-analyst {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.assistant-avatar.design-assistant {
    background: linear-gradient(135deg, #ec4899 0%, #be185d 100%);
}

.assistant-avatar.researcher {
    background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%);
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    margin-right: 15px;
    flex-shrink: 0;
    position: relative;
}

.message-sender {
    position: absolute;
    bottom: -20px;
    font-size: 11px;
    color: #9ca3af;
    background: white;
    padding: 2px 8px;
    border-radius: 10px;
    white-space: nowrap;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    z-index: 1;
}

.message.user .message-avatar {
    background: linear-gradient(135deg, #667eea 0%, #8b5cf6 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.message.assistant .message-avatar {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(251, 191, 36, 0.3);
}

.message-content {
    background: #ffffff;
    padding: 15px 20px;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    max-width: fit-content;
    min-width: 60px;
}

.message-content.chat-file-preview-host {
    width: 100%;
    max-width: 100%;
}

.message.assistant.chat-preview-wide .assistant-message {
    width: 100%;
}

.message.assistant.chat-preview-wide .message-content {
    width: 85%;
    max-width: 85%;
}

.message.assistant.chat-preview-wide .message-content.chat-file-attachment-host {
    width: fit-content;
    max-width: min(420px, 100%);
    min-width: 0;
}

.chat-pending-response .message-content {
    max-width: 360px;
    white-space: normal;
}

.chat-qr-card {
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    background: #f8fafc;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.chat-qr-text {
    font-size: 13px;
    color: #111827;
    font-weight: 600;
}

.chat-qr-code canvas,
.chat-qr-code img {
    width: 160px;
    height: 160px;
    display: block;
}

.chat-file-preview-card {
    margin-top: 14px;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    background: #f8fafc;
    overflow: hidden;
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
}

.chat-file-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: #f1f5f9;
    border-bottom: 1px solid #e5e7eb;
    gap: 12px;
}

.chat-file-preview-name {
    font-size: 12px;
    font-weight: 600;
    color: #111827;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-file-preview-link {
    font-size: 12px;
    color: #2563eb;
    text-decoration: none;
}

.chat-file-preview-body {
    padding: 10px;
    background: #ffffff;
}

.chat-file-preview-body img,
.chat-file-preview-body iframe {
    width: 100%;
    max-width: 100%;
    border-radius: 8px;
    border: 0;
    display: block;
}

.chat-file-preview-body iframe {
    height: 520px;
}

.chat-file-preview-body img {
    max-height: 520px;
    object-fit: contain;
}

.chat-file-preview-empty {
    font-size: 12px;
    color: #6b7280;
}

.chat-file-attachment-card {
    margin-top: 14px;
    border-radius: 14px;
    border: 1px solid #e5e7eb;
    background: #ffffff;
    display: inline-flex;
    width: fit-content;
    max-width: min(420px, 100%);
    box-sizing: border-box;
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.chat-file-attachment-card:hover {
    border-color: #cbd5e1;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
    transform: translateY(-1px);
}

.chat-file-attachment-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    min-width: 0;
}

.chat-file-attachment-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: #eff6ff;
    color: #2563eb;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    font-size: 18px;
}

.chat-file-attachment-text {
    min-width: 0;
    flex: 1 1 auto;
}

.chat-file-attachment-filename {
    font-size: 14px;
    font-weight: 600;
    color: #111827;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-file-attachment-subtype {
    margin-top: 4px;
    font-size: 12px;
    color: #6b7280;
}

.chat-file-attachment-link {
    font-size: 12px;
    color: #2563eb;
    text-decoration: none;
    flex: 0 0 auto;
}

@media (max-width: 768px) {
    .chat-file-preview-card {
        max-width: 100%;
    }

    .chat-file-preview-body img,
    .chat-file-preview-body iframe {
        width: 100%;
    }

    .chat-file-attachment-card {
        max-width: min(100%, 420px);
    }

}

.chat-progress-card {
    display: flex;
    align-items: center;
    gap: 10px;
    width: min(100%, 320px);
    max-width: 320px;
    min-width: 220px;
    margin-top: 8px;
}

.chat-progress-bar {
    position: relative;
    flex: 1;
    max-width: 260px;
    height: 5px;
    border-radius: 999px;
    background: linear-gradient(90deg, #e5e7eb 0%, #d1d5db 100%);
    overflow: hidden;
    box-shadow: inset 0 0 0 1px rgba(17, 24, 39, 0.12);
}

.chat-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #d7d7d7 0%, #111827 100%);
    transition: width 0.2s ease;
}

.chat-progress-meta {
    display: flex;
    align-items: center;
    font-size: 12px;
    color: #374151;
    white-space: nowrap;
}

.chat-progress-percent {
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.2px;
}

.message-content p {
    margin: 0 0 10px 0;
    line-height: 1.6;
    color: #000000;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content pre {
    background: #f5f5f5;
    border-radius: 10px;
    padding: 15px;
    margin: 10px 0;
    overflow-x: auto;
    position: relative;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e0e0e0;
}

.code-lang {
    font-size: 12px;
    color: #666;
    font-weight: 600;
}

.copy-code-btn {
    padding: 5px 10px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s;
}

.copy-code-btn:hover {
    background: #764ba2;
}

.copy-code-btn.copied {
    background: #4caf50;
}

.message-content code {
    background: #f0f0f0;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

/* 聊天输入区域 */
.chat-input {
    padding: 10px;
    background: white;
    border-top: 1px solid #e0e0e0;
    position: relative;
    z-index: 6000;
}

.skill-suggestions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: nowrap;
    min-width: 0;
    overflow: hidden;
}

.skill-suggestions.hidden {
    display: none;
}

.skill-suggestion {
    border: 1px solid #e2e8f0;
    background: #ffffff;
    color: #1f2937;
    border-radius: 999px;
    padding: 0 12px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    height: 32px;
    box-shadow: none;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    flex: 0 0 auto;
}

.skill-suggestion:hover {
    background: #f8fafc;
    border-color: #c7d2fe;
}

.skill-selected {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    flex: 0 0 auto;
}

.skill-selected.hidden {
    display: none;
}

.skill-selected-card {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 1px solid #c7d2fe;
    background: #f5f7ff;
    color: #111827;
    border-radius: 999px;
    padding: 0 12px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    height: 32px;
    box-shadow: none;
    white-space: nowrap;
}

.skill-selected-close {
    border: none;
    background: rgba(15, 23, 42, 0.1);
    color: #334155;
    width: 20px;
    height: 20px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    cursor: pointer;
    font-size: 12px;
    line-height: 1;
}

.skill-selected-close:hover {
    background: rgba(15, 23, 42, 0.18);
}

.input-wrapper {
    background: #f5f5f5;
    border-radius: 8px;
    padding: 8px 10px 10px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    transition: all 0.3s;
    position: relative;
}

.input-wrapper:focus-within {
    background: #eeeeee;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.chat-textarea {
    flex: 0 0 auto;
    width: 100%;
    display: block;
    background: transparent;
    border: none;
    outline: none;
    padding: 8px 10px;
    font-size: 14px;
    resize: none;
    min-height: 28px;
    line-height: 1.5;
    color: #333;
    overflow-y: hidden;
    transition: height 0.12s ease;
}

.chat-textarea::placeholder {
    color: #999;
}

.input-actions {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: flex-end;
    gap: 12px;
    width: 100%;
}

.input-actions-left {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 0 0 auto;
}

.input-skills-slot {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    overflow: hidden;
}

.input-submit-group {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex: 0 0 auto;
    min-width: 76px;
}

.chat-input .prompt-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    font-size: 12px;
}

.send-btn {
    width: 34px;
    height: 34px;
    flex: 0 0 auto;
    background: linear-gradient(135deg, #111827 0%, #374151 100%);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    margin-right: 0;
}

.stop-btn {
    width: 34px;
    height: 34px;
    flex: 0 0 auto;
    background: #fee2e2;
    border: 1px solid #fecaca;
    border-radius: 50%;
    color: #dc2626;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.stop-btn:hover:not(:disabled) {
    background: #fecaca;
    box-shadow: 0 5px 15px rgba(220, 38, 38, 0.18);
}

.stop-btn:disabled {
    opacity: 0.6;
    cursor: wait;
}

.upload-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.upload-btn {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #111827 0%, #374151 100%);
    border: none;
    border-radius: 50%;
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 6px 16px rgba(17, 24, 39, 0.25);
}

.upload-btn:hover {
    background: linear-gradient(135deg, #0f172a 0%, #4b5563 100%);
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.3);
}

.chat-input .upload-menu {
    position: absolute;
    bottom: 44px;
    right: 0;
    min-width: 140px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.12);
    padding: 6px 0;
    z-index: 5000;
}

.header-upload {
    position: relative;
    display: flex;
    align-items: center;
}

.file-header .upload-menu {
    position: absolute;
    top: 42px;
    right: 0;
    min-width: 140px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.12);
    padding: 6px 0;
    z-index: 5000;
}

.header-upload .upload-menu {
    bottom: auto;
}

.header-create {
    position: relative;
    display: flex;
    align-items: center;
}

.header-create .upload-menu {
    bottom: auto;
}

.header-archive {
    position: relative;
    display: flex;
    align-items: center;
}

.header-archive .upload-menu {
    bottom: auto;
}

.header-settings .upload-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    bottom: auto;
    min-width: 168px;
    padding: 6px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid rgba(229, 231, 235, 0.95);
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.14);
    backdrop-filter: blur(18px);
    z-index: 6000;
}

@media (max-width: 768px) {
    .chat-input .upload-menu {
        left: 0;
        right: auto;
        bottom: 46px;
        min-width: 150px;
        max-width: calc(100vw - 24px);
    }
}

.agent-settings-menu .upload-item {
    min-height: 38px;
    padding: 9px 12px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 500;
}

.agent-settings-menu .upload-item i {
    width: 14px;
    text-align: center;
}

.upload-item-danger {
    color: #dc2626;
}

.upload-item-danger i {
    color: #dc2626;
}

.upload-item-danger:hover {
    background: #fef2f2;
}

.upload-item {
    padding: 10px 14px;
    font-size: 13px;
    color: #111827;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.upload-item:hover {
    background: #f3f4f6;
}

.upload-item i {
    width: 16px;
    text-align: center;
    color: #667eea;
}

.send-btn:hover:not(:disabled) {
    transform: scale(1.1);
    box-shadow: 0 5px 15px rgba(15, 23, 42, 0.3);
}

.send-btn:disabled {
    background: #9ca3af;
    cursor: not-allowed;
}

.input-submit-group .hidden.stop-btn {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
}

/* 添加按钮 */
.add-btn {
    width: 40px;
    height: 40px;
    background: #ffc107;
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    margin-left: 10px;
}

.add-btn:hover {
    background: #ff9800;
    transform: rotate(90deg);
}

/* 打字动画 */
.typing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 15px 20px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: #667eea;
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 拖拽区域 */
.drop-zone {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.drop-zone.active {
    display: flex;
}

.drop-content {
    background: white;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.drop-content i {
    font-size: 48px;
    color: #667eea;
    margin-bottom: 20px;
}

/* 联系人分组标题 */
.contact-section-title {
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    color: #6b7280;
    background: #f9fafb;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    gap: 8px;
}

.contact-section-title:first-child {
    border-top: none;
}

/* AI智能体头像样式 */
.ai-agent-avatar {
    background: none !important;
    box-shadow: none !important;
    position: relative;
    width: 40px !important;
    height: 40px !important;
}

.ai-agent-avatar i {
    display: none;
}

/* AI头像圆形背景 - 覆盖所有样式 */
.ai-agent-avatar .ai-avatar-badge,
.contact-avatar .ai-avatar-badge {
    width: 100% !important;
    height: 100% !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-weight: bold !important;
    font-size: 14px !important;
    color: white !important;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1) !important;
}

/* 用户头像首字母 */
.user-initials {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
    }

    .file-container {
        width: 100%;
        height: 40%;
    }

    .chat-container {
        height: 60%;
    }
}

/* 2026 AI assistant visual refresh */
:root {
    --qb-page-bg: #f7f8fa;
    --qb-panel-bg: #ffffff;
    --qb-panel-muted: #fafafa;
    --qb-text: #111827;
    --qb-text-soft: #6b7280;
    --qb-text-faint: #9ca3af;
    --qb-line: #edf0f3;
    --qb-line-strong: #e4e9ef;
    --qb-hover: #f3f4f6;
    --qb-active: #eef4ff;
    --qb-accent: #4f46e5;
    --qb-accent-soft: rgba(79, 70, 229, 0.08);
    --qb-danger-soft: rgba(239, 68, 68, 0.08);
    --qb-shadow-sm: 0 1px 1px rgba(17, 24, 39, 0.025);
    --qb-shadow-md: 0 4px 18px rgba(17, 24, 39, 0.045);
}

body {
    background: var(--qb-page-bg);
    color: var(--qb-text);
    font: 14px/1.6 "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
    scrollbar-width: thin;
    scrollbar-color: rgba(148, 163, 184, 0.45) transparent;
}

*::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

*::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.32);
    border: 2px solid transparent;
    border-radius: 999px;
    background-clip: padding-box;
}

*::-webkit-scrollbar-thumb:hover {
    background: rgba(100, 116, 139, 0.48);
    border: 2px solid transparent;
    background-clip: padding-box;
}

*::-webkit-scrollbar-corner {
    background: transparent;
}

.mobile-workbench-nav {
    display: none;
}

.mobile-my-panel {
    display: none;
}

.particles {
    opacity: 0.3;
}

.particle {
    background: rgba(79, 70, 229, 0.035);
}

.navbar {
    background: rgba(255, 255, 255, 0.78);
    border-bottom: 1px solid rgba(229, 231, 235, 0.9);
    backdrop-filter: blur(18px);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.brand-logo i,
.navbar .user-name,
.nav-item.active:hover {
    color: #111827;
}

.brand-logo i {
    color: #0f172a;
    background: linear-gradient(135deg, #06b6d4 0%, #4f46e5 35%, #8b5cf6 68%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 2px 8px rgba(99, 102, 241, 0.18));
}

.brand-text {
    background: linear-gradient(135deg, #0f172a 0%, #1d4ed8 22%, #6366f1 46%, #8b5cf6 68%, #0ea5a4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
}

.brand-pro {
    background: linear-gradient(135deg, #0ea5a4 0%, #22c55e 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-tagline,
.nav-item,
.user-menu i {
    color: #6b7280;
}

.nav-item:hover,
.action-btn:hover,
.user-menu:hover,
.dropdown-item:hover {
    background: #f3f4f6;
    color: #111827;
}

.nav-item.active {
    background: #eef4ff;
    color: #3b82f6;
    border: 1px solid #dbeafe;
}

.action-btn,
.user-menu {
    background: rgba(255, 255, 255, 0.78);
    border-color: #e5e7eb;
    color: #4b5563;
    box-shadow: none;
}

.navbar .user-avatar {
    background: #eef2ff;
    color: #3b82f6;
    box-shadow: none;
}

.user-dropdown {
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--qb-line);
    border-radius: 14px;
    box-shadow: var(--qb-shadow-md);
}

.dropdown-item {
    color: var(--qb-text);
}

.dropdown-item.logout:hover {
    background: var(--qb-danger-soft);
}

.main-container {
    gap: 1px;
    padding: 8px;
    padding-top: 54px;
}

.file-container,
.right-container {
    background: var(--qb-panel-bg);
    border: 1px solid var(--qb-line);
    border-radius: 8px;
    backdrop-filter: none;
    box-shadow: var(--qb-shadow-sm);
}

.right-container {
    order: 1;
}

.file-toggle {
    order: 2;
}

.file-container {
    order: 3;
}

.main-container.file-collapsed .right-container {
    width: calc(100% - 4px);
}

.file-toggle {
    width: 2px;
}

.file-toggle-btn {
    width: 2px;
    height: 64px;
    border: none;
    background: #d1d5db;
    color: #4b5563;
    box-shadow: none;
    padding: 0;
    overflow: hidden;
}

.file-toggle-btn:hover,
.main-container.file-collapsed .file-toggle-btn {
    background: #9ca3af;
    color: #374151;
    box-shadow: none;
    transform: none;
}

.file-header,
.contacts-header,
.chat-header {
    background: var(--qb-panel-bg);
    color: var(--qb-text);
    border-bottom: 1px solid rgba(237, 240, 243, 0.72);
}

.file-header {
    padding: 10px 12px;
}

.mobile-back-btn {
    display: none;
    width: 32px;
    height: 32px;
    border: 1px solid var(--qb-line);
    border-radius: 8px;
    background: #f9fafb;
    color: var(--qb-text-soft);
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
}

.contacts-header,
.chat-header {
    min-height: 56px;
    padding: 10px 14px;
    border-radius: 0;
}

.conversation-name,
.contacts-title,
.chat-header h2 {
    color: var(--qb-text);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.contact-status,
.chat-subtitle,
.file-tree-empty,
.file-tree-empty-text,
.contact-time {
    color: var(--qb-text-soft);
}

.header-action-btn,
.contact-action-btn,
.chat-action-btn,
.upload-btn,
.chat-input .prompt-btn,
.skill-selected-close {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--qb-line);
    background: #f9fafb;
    color: var(--qb-text-soft);
    box-shadow: none;
}

.header-action-btn:hover,
.contact-action-btn:hover,
.chat-action-btn:hover,
.upload-btn:hover,
.chat-input .prompt-btn:hover,
.skill-selected-close:hover {
    background: var(--qb-hover);
    color: var(--qb-text);
    transform: none;
    box-shadow: none;
}

.chat-action-btn[title*="清空"]:hover,
.header-action-btn[title*="清空"]:hover,
.header-action-btn[title*="删除"]:hover {
    background: #fef2f2;
    border-color: #fecaca;
    color: #dc2626;
}

.file-tree,
.contacts-list,
.chat-messages {
    background: var(--qb-panel-bg);
}

.file-tree {
    padding: 8px;
}

.tree-item-content {
    height: 32px;
    padding: 6px 10px;
    border-radius: 10px;
}

.tree-item-content:hover {
    background: var(--qb-hover);
}

.tree-item-content::before {
    width: 2px;
    background: var(--qb-accent);
}

.tree-item-content.selected,
.tree-item.drop-target > .tree-item-content {
    background: var(--qb-active);
}

.upload-menu,
.add-menu,
.chat-input .upload-menu,
.file-header .upload-menu {
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--qb-line);
    border-radius: 14px;
    box-shadow: var(--qb-shadow-md);
}

.upload-item,
.add-item {
    color: var(--qb-text);
}

.upload-item:hover,
.add-item:hover {
    background: var(--qb-hover);
}

.upload-item i,
.add-item i {
    color: var(--qb-accent);
}

.contacts-container {
    width: 23%;
    min-width: 240px;
    background: var(--qb-panel-bg);
}

.search-bar {
    padding: 10px 12px;
    background: var(--qb-panel-bg);
}

.search-input {
    min-height: 36px;
    border: 1px solid var(--qb-line);
    border-radius: 8px;
    background: #ffffff;
    color: var(--qb-text);
    padding: 8px 12px;
}

.search-input:focus {
    border-color: rgba(79, 70, 229, 0.3);
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.06);
}

.contacts-list {
    padding: 8px;
}

.contact-item {
    gap: 12px;
    padding: 10px 12px;
    margin-bottom: 4px;
    border: 1px solid transparent;
    border-radius: 8px;
}

.contact-item:hover {
    background: var(--qb-hover);
    border-color: #eef0f3;
}

.contact-item.active {
    background: var(--qb-active);
    border: 1px solid rgba(79, 70, 229, 0.12);
    border-left: 1px solid rgba(79, 70, 229, 0.12);
}

.contact-item.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 2px;
    border-radius: 999px;
    background: var(--qb-accent);
}

.contact-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--qb-text);
}

.contact-status {
    font-size: 12px;
}

.contact-time {
    font-size: 11px;
}

.contact-avatar,
.ai-agent-avatar,
.user-initials,
.ai-avatar-circle {
    width: 36px !important;
    height: 36px !important;
    border-radius: 8px !important;
    box-shadow: none !important;
    filter: none !important;
}

.contact-avatar {
    background: #eef2ff;
    color: var(--qb-accent);
}

.unread-badge {
    min-width: 20px;
    height: 20px;
    border-radius: 999px;
    background: var(--qb-accent);
    box-shadow: none;
}

.no-contacts,
.loading-spinner {
    padding: 24px 12px;
    color: var(--qb-text-soft);
    text-align: center;
    font-size: 13px;
}

.right-container {
    overflow: hidden;
}

.chat-header-avatar {
    width: 36px !important;
    height: 36px !important;
    border-radius: 8px !important;
    background: #eef2ff !important;
    color: var(--qb-accent) !important;
}

.chat-header-avatar i {
    color: var(--qb-accent) !important;
    font-size: 14px;
}

.ai-avatar-circle,
.chat-header-avatar.agent-head-avatar {
    background: transparent !important;
    border: 1px solid rgba(15, 23, 42, 0.06);
    overflow: hidden;
}

.contact-avatar img,
.ai-avatar-circle img,
.chat-header-avatar img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
}

.chat-header-avatar.agent-head-avatar img {
    border-radius: 10px;
}

.chat-subtitle {
    margin-top: 2px;
    font-size: 12px;
    opacity: 1;
}

.chat-actions {
    gap: 6px;
}

.chat-messages {
    padding: 20px 24px 16px;
    background:
        radial-gradient(circle at top, rgba(79, 70, 229, 0.03), transparent 36%),
        #f8f9fc;
}

.chat-messages.chat-messages-empty {
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-empty-state {
    width: min(420px, 100%);
    padding: 24px;
    border: 1px solid var(--qb-line);
    border-radius: 10px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(249, 250, 251, 0.96));
    box-shadow: var(--qb-shadow-sm);
}

.chat-empty-badge {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    background: #eef2ff;
    color: var(--qb-accent);
}

.chat-empty-title {
    font-size: 22px;
    line-height: 1.2;
    font-weight: 700;
    color: var(--qb-text);
    letter-spacing: -0.02em;
}

.chat-empty-desc {
    margin-top: 10px;
    font-size: 14px;
    line-height: 1.65;
    color: var(--qb-text-soft);
}

.chat-empty-tips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
}

.chat-empty-tip {
    padding: 8px 12px;
    border: 1px solid var(--qb-line);
    border-radius: 8px;
    background: #ffffff;
    font-size: 12px;
    color: var(--qb-text-soft);
    cursor: pointer;
    transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
    appearance: none;
    -webkit-appearance: none;
}

.chat-empty-tip:hover {
    background: var(--qb-hover);
    border-color: var(--qb-line-strong);
    color: var(--qb-text);
}

.message {
    margin-bottom: 18px;
}

.assistant-info {
    gap: 6px;
    margin-bottom: 6px;
    font-size: 12px;
}

.assistant-name,
.assistant-status {
    color: var(--qb-text-soft);
}

.assistant-name {
    font-weight: 600;
}

.assistant-name i {
    color: var(--qb-accent);
}

.assistant-name::after {
    color: #c7ccd5;
}

.message-content {
    max-width: min(760px, 100%);
    padding: 14px 16px;
    border-radius: 5px;
    border: 1px solid #edf0f3;
    background: #ffffff;
    box-shadow: none;
}

.message.user .message-content {
    background: #f3f6fb;
    border-color: #e6eaf2;
    color: var(--qb-text);
}

.message.assistant .message-content {
    background: #ffffff;
}

.message-content p,
.message-content li {
    color: var(--qb-text);
}

.message-content pre {
    background: #f8fafc;
    border: 1px solid #e6ebf1;
    border-radius: 14px;
}

.message-content code {
    background: #f3f4f6;
    color: #1f2937;
}

.copy-code-btn {
    background: #ffffff;
    color: var(--qb-text-soft);
    border: 1px solid var(--qb-line);
    border-radius: 8px;
}

.copy-code-btn:hover,
.copy-code-btn.copied {
    background: var(--qb-hover);
    color: var(--qb-text);
}

.typing-indicator,
.chat-progress-card,
.chat-qr-card,
.chat-file-preview-card {
    border: none;
    border-radius: 10px;
    background: #ffffff;
    box-shadow: none;
}

.chat-file-preview-header {
    background: #f9fafb;
}

.chat-input {
    padding: 14px 18px 18px;
    background: #ffffff;
    border-top: 1px solid rgba(237, 240, 243, 0.72);
}

.skill-suggestion,
.skill-selected-card {
    height: 34px;
    border-radius: 999px;
    border: 1px solid var(--qb-line);
    box-shadow: none;
}

.skill-suggestion:hover {
    background: var(--qb-hover);
    border-color: #dbe2ea;
    transform: none;
}

.skill-selected-card {
    background: #f8faff;
    border-color: #d9e3ff;
}

.input-wrapper {
    background: #ffffff;
    border: 1px solid var(--qb-line-strong);
    border-radius: 6px;
    padding: 10px 12px 10px 14px;
    box-shadow: none;
}

.input-wrapper:focus-within {
    background: #ffffff;
    border-color: rgba(79, 70, 229, 0.28);
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.05);
}

.chat-textarea {
    padding: 4px 2px;
    color: var(--qb-text);
    font-size: 14px;
    line-height: 1.6;
    min-height: 30px;
}

#chatInput,
.chat-textarea,
#fileEditor,
.file-editor {
    cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='24' viewBox='0 0 12 24'%3E%3Cpath d='M6 3v18M4 3h4M4 21h4' stroke='%230f172a' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E") 6 12, text;
}

.chat-textarea::placeholder {
    color: var(--qb-text-faint);
}

.send-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--qb-accent);
    box-shadow: none;
}

.stop-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    box-shadow: none;
}

.send-btn:hover:not(:disabled) {
    background: #4338ca;
    transform: translateY(-1px);
    box-shadow: none;
}

.stop-btn:hover:not(:disabled) {
    background: #fee2e2;
    transform: translateY(-1px);
    box-shadow: none;
}

.send-btn:disabled {
    background: #c7d2fe;
    color: rgba(255, 255, 255, 0.9);
}

.preview-content,
.qb-modal-content,
.skill-publish-card {
    border: 1px solid var(--qb-line);
    border-radius: 10px;
    box-shadow: 0 10px 32px rgba(17, 24, 39, 0.06);
}

@media (min-width: 769px) {
    :root {
        --preview-dock-width: clamp(420px, 45vw, 860px);
    }

    .main-container.preview-dock-open {
        width: calc(100vw - var(--preview-dock-width));
        padding-right: 0;
        gap: 0;
        transition: width 0.18s ease;
    }

    .main-container.preview-dock-open .file-container {
        border-top-right-radius: 0;
        border-bottom-right-radius: 0;
        border-right-color: transparent;
        box-shadow: none;
    }

    .main-container.preview-dock-open .file-toggle {
        width: 0;
        overflow: hidden;
        opacity: 0;
        pointer-events: none;
    }

    .preview-modal {
        pointer-events: none;
    }

    .preview-backdrop {
        display: none;
    }

    .preview-content {
        pointer-events: auto;
        top: 0;
        right: 0;
        left: auto;
        transform: none;
        width: var(--preview-dock-width);
        max-width: none;
        height: 100vh;
        background: #ffffff;
        border-radius: 0;
        border-top: 0;
        border-right: 0;
        border-bottom: 0;
        border-left: 1px solid #edf0f3;
        box-shadow: none;
    }

    .preview-header {
        height: 50px;
        min-height: 50px;
        padding: 0 14px;
        background: #ffffff;
        border-bottom: 1px solid #edf0f3;
        box-shadow: 0 1px 0 rgba(15, 23, 42, 0.02);
    }

    .preview-title {
        min-width: 0;
        color: #172033;
        font-size: 12px;
        letter-spacing: 0.01em;
    }

    .preview-title i {
        width: 26px;
        height: 26px;
        border-radius: 8px;
        display: inline-grid;
        place-items: center;
        background: #f1f5f9;
        color: #475569;
        font-size: 12px;
    }

    .preview-title span {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .preview-close {
        width: 28px;
        height: 28px;
        border-radius: 8px;
        background: transparent;
        color: #64748b;
        font-size: 20px;
        line-height: 1;
    }

    .preview-close:hover {
        background: #f1f5f9;
        color: #0f172a;
    }

    .preview-body {
        background: #f8fafc;
        padding: 12px;
    }

    .preview-body.iframe-mode {
        padding: 0;
        background: #ffffff;
    }

    .preview-body pre {
        margin: 0;
        min-height: 100%;
        border-radius: 12px;
        border: 1px solid #e6ebf1;
        background: #ffffff;
        box-shadow: inset 0 1px 0 rgba(15, 23, 42, 0.02);
    }

    .pdf-pages {
        gap: 10px;
    }

    .pdf-page {
        padding: 0;
    }

    .pdf-canvas {
        border: 1px solid #e6ebf1;
        border-radius: 10px;
        box-shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
        overflow: hidden;
    }

    .preview-body > img {
        border-radius: 12px;
        box-shadow: 0 10px 28px rgba(15, 23, 42, 0.1);
        background: #ffffff;
    }

    .preview-loading {
        height: 100%;
        justify-content: center;
        color: #64748b;
    }
}

@media (max-width: 768px) {
    .navbar {
        display: none;
    }

    .mobile-workbench-nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 1200;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
        padding: 6px 12px calc(6px + env(safe-area-inset-bottom));
        border-top: 1px solid rgba(229, 231, 235, 0.9);
        border-radius: 0;
        background: rgba(255, 255, 255, 0.96);
        backdrop-filter: blur(16px);
        box-shadow: 0 -8px 24px rgba(15, 23, 42, 0.05);
    }

    .mobile-workbench-tab {
        min-height: 46px;
        border: none;
        border-radius: 14px;
        background: transparent;
        color: var(--qb-text-soft);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        font-size: 11px;
        font-weight: 600;
    }

    .mobile-workbench-tab i {
        font-size: 15px;
    }

    .mobile-workbench-tab.active {
        background: var(--qb-active);
        color: var(--qb-accent);
    }

    .mobile-back-btn {
        display: inline-flex;
    }

    .file-header,
    .chat-header {
        gap: 10px;
    }

    .chat-header-info {
        min-width: 0;
    }

    .main-container {
        display: block;
        gap: 0;
        padding: 0;
        padding-top: 0;
        padding-bottom: 0;
    }

    .file-toggle {
        display: none;
    }

    .right-container {
        width: 100%;
        min-width: 0;
        height: calc(100vh - 60px - env(safe-area-inset-bottom));
        background: transparent;
        border: none;
        box-shadow: none;
        display: block;
        overflow: visible;
    }

    .file-container,
    .contacts-container,
    .chat-container,
    .mobile-my-panel {
        width: 100%;
        min-width: 0;
        max-width: 100%;
        border-radius: 0;
        min-height: calc(100vh - 60px - env(safe-area-inset-bottom));
        border: none;
        box-shadow: none;
    }

    .contacts-container {
        width: 100%;
        margin-right: 0;
        padding-right: 0;
        border-right: none;
    }

    .chat-container {
        height: calc(100vh - 60px - env(safe-area-inset-bottom));
        min-height: calc(100vh - 60px - env(safe-area-inset-bottom));
    }

    .main-container[data-mobile-tab="menu"] .file-container,
    .main-container[data-mobile-tab="menu"] .chat-container {
        display: none;
    }

    .main-container[data-mobile-tab="menu"] .right-container,
    .main-container[data-mobile-tab="menu"] .contacts-container {
        display: block;
    }

    .main-container[data-mobile-tab="chat"] .file-container,
    .main-container[data-mobile-tab="chat"] .contacts-container {
        display: none;
    }

    .main-container[data-mobile-tab="chat"] .right-container,
    .main-container[data-mobile-tab="chat"] .chat-container {
        display: flex;
    }

    .main-container[data-mobile-tab="files"] .right-container {
        display: none;
    }

    .main-container[data-mobile-tab="files"] .file-container {
        display: flex;
    }

    .main-container[data-mobile-tab="my"] .file-container,
    .main-container[data-mobile-tab="my"] .right-container {
        display: none;
    }

    .main-container[data-mobile-tab="my"] .mobile-my-panel {
        display: flex;
        flex-direction: column;
    }

    .chat-messages {
        padding: 16px;
    }

    .chat-input {
        padding: 12px;
    }

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

    .mobile-my-panel {
        padding: 20px 16px calc(20px + env(safe-area-inset-bottom));
        background: #f7f8fa;
        color: var(--qb-text);
        overflow-y: auto;
    }

    .mobile-my-header {
        padding: 4px 4px 18px;
    }

    .mobile-my-title {
        font-size: 24px;
        line-height: 1.2;
        font-weight: 700;
        color: var(--qb-text);
        letter-spacing: -0.02em;
    }

    .mobile-my-subtitle {
        margin-top: 6px;
        font-size: 13px;
        color: var(--qb-text-soft);
    }

    .mobile-my-list {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .mobile-my-item {
        min-height: 56px;
        padding: 0 16px;
        border: 1px solid var(--qb-line);
        border-radius: 8px;
        background: #ffffff;
        color: var(--qb-text);
        display: flex;
        align-items: center;
        justify-content: space-between;
        box-shadow: var(--qb-shadow-sm);
    }

    .mobile-my-item-main {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        font-size: 14px;
        font-weight: 600;
    }

    .mobile-my-item-main i {
        width: 18px;
        text-align: center;
        color: var(--qb-accent);
    }

    .mobile-my-item > i:last-child {
        font-size: 12px;
        color: var(--qb-text-faint);
    }

    .mobile-my-item-danger {
        color: #dc2626;
    }

    .mobile-my-item-danger .mobile-my-item-main i,
    .mobile-my-item-danger > i:last-child {
        color: #dc2626;
    }
}

.contacts-title {
    letter-spacing: -0.01em;
}

.contacts-list {
    padding: 10px 8px 12px;
}

.feature-group {
    margin-bottom: 3px;
}

.feature-group-trigger {
    width: 100%;
    border: 1px solid transparent;
    background: transparent;
    border-radius: 7px;
    min-height: 38px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    color: var(--qb-text);
    position: relative;
    transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.feature-group-trigger:hover {
    background: #f8fafc;
}

.feature-group.active > .feature-group-trigger {
    background: #f6f8fb;
    border-color: transparent;
}

.feature-group.active > .feature-group-trigger::before {
    content: "";
    position: absolute;
    left: 0;
    top: 7px;
    bottom: 7px;
    width: 2px;
    border-radius: 999px;
    background: #4f46e5;
}

.feature-group-main {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 600;
}

.feature-group-main i {
    width: 16px;
    text-align: center;
    color: var(--qb-text-soft);
}

.feature-group-arrow {
    font-size: 11px;
    color: var(--qb-text-faint);
    transition: transform 0.16s ease;
}

.feature-group.expanded .feature-group-arrow {
    transform: rotate(90deg);
}

.feature-submenu {
    margin-top: 4px;
    padding-left: 10px;
}

.feature-submenu .contact-item {
    min-height: 36px;
    margin-bottom: 2px;
    padding: 6px 8px 6px 10px;
    border-radius: 8px;
}

.feature-submenu .contact-item::before {
    left: 4px;
}

.feature-submenu .contact-avatar,
.feature-submenu .ai-agent-avatar,
.feature-submenu .user-initials,
.feature-submenu .ai-avatar-circle {
    width: 32px !important;
    height: 32px !important;
    border-radius: 5px !important;
}

.feature-submenu .contact-name {
    margin-bottom: 1px;
}

.feature-submenu .contact-status,
.feature-submenu .contact-time {
    font-size: 11px;
}

.feature-link.placeholder,
.feature-placeholder {
    width: 100%;
    min-height: 38px;
    padding: 10px 12px;
    border: 1px dashed #e5e7eb;
    border-radius: 12px;
    background: #fbfbfc;
    color: var(--qb-text-soft);
    font-size: 12px;
    text-align: left;
}

.feature-link.placeholder {
    cursor: pointer;
}

.feature-link.placeholder:hover {
    background: #f7f8fa;
    color: var(--qb-text);
}

.feature-child {
    width: 100%;
    min-height: 38px;
    padding: 9px 12px;
    border: 1px solid transparent;
    border-radius: 12px;
    background: transparent;
    color: var(--qb-text-soft);
    text-align: left;
    cursor: pointer;
    transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.feature-child + .feature-child {
    margin-top: 4px;
}

.feature-child:hover {
    background: var(--qb-hover);
    color: var(--qb-text);
}

.feature-child.active {
    background: var(--qb-active);
    border-color: rgba(79, 70, 229, 0.12);
    color: var(--qb-text);
}

.feature-child-main {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    font-weight: 600;
}

.feature-child-main i {
    width: 16px;
    text-align: center;
    color: var(--qb-text-faint);
}

.feature-child.active .feature-child-main i {
    color: var(--qb-accent);
}

.qa-group-widget {
    position: fixed;
    left: 22px;
    bottom: 22px;
    z-index: 1200;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}

.qa-group-trigger {
    border: none;
    border-radius: 18px;
    padding: 6px 10px 6px 6px;
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.96), rgba(45, 62, 97, 0.94));
    box-shadow: 0 18px 38px rgba(15, 23, 42, 0.18);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.qa-group-trigger:hover {
    transform: translateY(-1px);
    box-shadow: 0 22px 44px rgba(15, 23, 42, 0.24);
}

.qa-group-trigger-orb {
    width: 34px;
    height: 34px;
    border-radius: 12px;
    background: radial-gradient(circle at 30% 30%, #7dd3fc, #2563eb 68%, #1d4ed8 100%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: #ffffff;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.32);
}

.qa-group-trigger-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
}

.qa-group-trigger-text strong {
    font-size: 12px;
    line-height: 1;
    font-weight: 700;
}

.qa-group-trigger-text small {
    font-size: 10px;
    line-height: 1.3;
    color: rgba(255, 255, 255, 0.75);
}

.qa-group-popup {
    width: min(260px, calc(100vw - 28px));
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid rgba(255, 255, 255, 0.85);
    box-shadow: 0 26px 56px rgba(15, 23, 42, 0.2);
    backdrop-filter: blur(16px);
    overflow: hidden;
}

.qa-group-popup.hidden {
    display: none;
}

.qa-group-popup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 12px 10px;
    border-bottom: 1px solid rgba(226, 232, 240, 0.9);
}

.qa-group-popup-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.qa-group-popup-icon {
    width: 30px;
    height: 30px;
    border-radius: 10px;
    background: linear-gradient(135deg, #e0f2fe, #dbeafe);
    color: #2563eb;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
}

.qa-group-popup-title strong {
    display: block;
    font-size: 13px;
    color: #111827;
}

.qa-group-popup-title span {
    display: block;
    margin-top: 2px;
    font-size: 11px;
    color: #6b7280;
}

.qa-group-popup-close {
    width: 26px;
    height: 26px;
    border: none;
    border-radius: 8px;
    background: #f3f4f6;
    color: #4b5563;
    cursor: pointer;
}

.qa-group-popup-body {
    padding: 10px;
}

.qa-group-popup-body img {
    display: block;
    width: 100%;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: 0 10px 26px rgba(15, 23, 42, 0.12);
}

@media (max-width: 768px) {
    .qa-group-widget {
        display: none;
    }

    .qa-group-widget {
        left: 12px;
        bottom: calc(74px + env(safe-area-inset-bottom));
    }

    .qa-group-trigger {
        padding: 8px 12px 8px 8px;
        border-radius: 18px;
    }

    .qa-group-trigger-orb {
        width: 38px;
        height: 38px;
        border-radius: 14px;
    }

    .qa-group-trigger-text strong {
        font-size: 13px;
    }

    .qa-group-trigger-text small {
        font-size: 10px;
    }

    .qa-group-popup {
        width: min(300px, calc(100vw - 24px));
        border-radius: 18px;
    }
}