:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f7f7f8;
    --bg-tertiary: #ececf1;
    --bg-hover: #e5e5eb;
    --bg-active: #d9d9e0;
    --text-primary: #1a1a2e;
    --text-secondary: #5a5a6e;
    --text-tertiary: #8e8ea0;
    --border-color: #e5e5eb;
    --border-hover: #d1d1d9;
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-light: #e0e7ff;
    --user-bubble: #f0f4ff;
    --user-text: #1a1a2e;
    --ai-bubble: #ffffff;
    --ai-text: #1a1a2e;
    --reasoning-bg: #f9f9fb;
    --reasoning-border: #e5e5eb;
    --reasoning-text: #6b6b7b;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
    --code-bg: #1e1e2e;
    --code-text: #cdd6f4;
    --success: #10b981;
    --error: #ef4444;
    --model-select-bg: #f0f0f5;
    --model-select-border: #d1d1d9;
    --edit-bg: #f0f7ff;
    --dialog-bg: #ffffff;
    --dialog-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);
    --overlay-opacity: 0.4;
}

html.dark {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252538;
    --bg-hover: #2a2a3e;
    --bg-active: #32324a;
    --text-primary: #e4e4f0;
    --text-secondary: #a0a0b8;
    --text-tertiary: #6e6e85;
    --border-color: #2a2a3e;
    --border-hover: #3a3a50;
    --accent: #6366f1;
    --accent-hover: #7c7cff;
    --accent-light: rgba(99, 102, 241, 0.15);
    --user-bubble: #1e2540;
    --user-text: #e4e4f0;
    --ai-bubble: #1a1a2e;
    --ai-text: #e4e4f0;
    --reasoning-bg: #14141f;
    --reasoning-border: #2a2a3e;
    --reasoning-text: #8e8ea0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --code-bg: #1a1a2e;
    --code-text: #cdd6f4;
    --model-select-bg: #1a1a2e;
    --model-select-border: #2a2a3e;
    --edit-bg: #1a2540;
    --dialog-bg: #1f1f34;
    --dialog-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
    --overlay-opacity: 0.55;
}

/* ========== Element UI 组件暗黑主题适配 ========== */
html.dark .el-dropdown-menu {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
}

html.dark .el-dropdown-menu__item {
    color: var(--text-secondary);
}

html.dark .el-dropdown-menu__item:not(.is-disabled):hover,
html.dark .el-dropdown-menu__item:focus {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

html.dark .el-dropdown-menu__item.is-disabled {
    color: var(--text-tertiary);
}

html.dark .el-popper[x-placement^=bottom] .popper__arrow,
html.dark .el-popper[x-placement^=bottom] .popper__arrow::after {
    border-bottom-color: var(--bg-tertiary);
}

html.dark .el-popper[x-placement^=top] .popper__arrow,
html.dark .el-popper[x-placement^=top] .popper__arrow::after {
    border-top-color: var(--bg-tertiary);
}

/* el-select 下拉适配 */
html.dark .el-select-dropdown {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
}

html.dark .el-select-dropdown__item {
    color: var(--text-secondary);
}

html.dark .el-select-dropdown__item.hover,
html.dark .el-select-dropdown__item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

html.dark .el-select-dropdown__item.selected {
    color: var(--accent);
}

/* el-input 暗色适配 */
html.dark .el-input__inner {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

html.dark .el-input__inner:hover {
    border-color: var(--border-hover);
}

html.dark .el-input__inner::placeholder {
    color: var(--text-tertiary);
}

html.dark .el-input__prefix,
html.dark .el-input__suffix {
    color: var(--text-tertiary);
}

/* el-button 默认样式适配 */
html.dark .el-button--default {
    background-color: var(--bg-secondary);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

html.dark .el-button--default:hover,
html.dark .el-button--default:focus {
    background-color: var(--bg-tertiary);
    border-color: var(--accent);
    color: var(--text-primary);
}

html.dark .el-button--default.is-disabled,
html.dark .el-button--default.is-disabled:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-tertiary);
}

html.dark .el-button--text {
    color: var(--accent);
}

html.dark .el-button--text:hover,
html.dark .el-button--text:focus {
    color: var(--accent-hover);
}

/* el-button 语义色按钮（primary/success/warning/danger/info）暗色适配 */
html.dark .el-button--primary {
    background-color: var(--accent);
    border-color: var(--accent);
}

html.dark .el-button--primary:hover,
html.dark .el-button--primary:focus {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
}

html.dark .el-button--primary.is-plain {
    background-color: rgba(99, 102, 241, 0.12);
    border-color: rgba(99, 102, 241, 0.4);
    color: #8b93ff;
}

html.dark .el-button--primary.is-plain:hover,
html.dark .el-button--primary.is-plain:focus {
    background-color: rgba(99, 102, 241, 0.22);
    border-color: var(--accent);
    color: #b0b6ff;
}

html.dark .el-button--success {
    background-color: #3aa876;
    border-color: #3aa876;
}

html.dark .el-button--success:hover,
html.dark .el-button--success:focus {
    background-color: #47bf88;
    border-color: #47bf88;
}

html.dark .el-button--success.is-plain {
    background-color: rgba(52, 168, 83, 0.12);
    border-color: rgba(52, 168, 83, 0.4);
    color: #4fcb8b;
}

html.dark .el-button--success.is-plain:hover,
html.dark .el-button--success.is-plain:focus {
    background-color: rgba(52, 168, 83, 0.22);
    border-color: #52d196;
    color: #52d196;
}

html.dark .el-button--warning {
    background-color: #d9952f;
    border-color: #d9952f;
}

html.dark .el-button--warning:hover,
html.dark .el-button--warning:focus {
    background-color: #e5a844;
    border-color: #e5a844;
}

html.dark .el-button--warning.is-plain {
    background-color: rgba(230, 162, 60, 0.12);
    border-color: rgba(230, 162, 60, 0.4);
    color: #e8b054;
}

html.dark .el-button--warning.is-plain:hover,
html.dark .el-button--warning.is-plain:focus {
    background-color: rgba(230, 162, 60, 0.22);
    border-color: #edb964;
    color: #edb964;
}

html.dark .el-button--danger {
    background-color: #e05050;
    border-color: #e05050;
}

html.dark .el-button--danger:hover,
html.dark .el-button--danger:focus {
    background-color: #ee6363;
    border-color: #ee6363;
}

html.dark .el-button--danger.is-plain {
    background-color: rgba(245, 108, 108, 0.12);
    border-color: rgba(245, 108, 108, 0.4);
    color: #f08484;
}

html.dark .el-button--danger.is-plain:hover,
html.dark .el-button--danger.is-plain:focus {
    background-color: rgba(245, 108, 108, 0.22);
    border-color: #f29393;
    color: #f29393;
}

html.dark .el-button--info {
    background-color: #5c6070;
    border-color: #5c6070;
}

html.dark .el-button--info:hover,
html.dark .el-button--info:focus {
    background-color: #6f7486;
    border-color: #6f7486;
}

html.dark .el-button--info.is-plain {
    background-color: rgba(144, 147, 153, 0.12);
    border-color: rgba(144, 147, 153, 0.35);
    color: #a8adb8;
}

html.dark .el-button--info.is-plain:hover,
html.dark .el-button--info.is-plain:focus {
    background-color: rgba(144, 147, 153, 0.22);
    border-color: #b6bac4;
    color: #b6bac4;
}

/* el-button 禁用态（语义色按钮） */
html.dark .el-button.is-disabled,
html.dark .el-button.is-disabled:hover,
html.dark .el-button.is-disabled:focus {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-tertiary);
}

/* el-form 标签 */
html.dark .el-form-item__label {
    color: var(--text-secondary);
}

/* el-loading 遮罩 */
html.dark .el-loading-mask {
    background-color: rgba(15, 15, 26, 0.7);
}

html.dark .el-loading-spinner .path {
    stroke: var(--accent);
}

/* el-message 消息提示 */
html.dark .el-message {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
}

html.dark .el-message__content {
    color: var(--text-primary);
}

/* el-messagebox 弹窗 */
html.dark .el-message-box {
    background-color: var(--dialog-bg);
    border-color: var(--border-hover);
}

html.dark .el-message-box__title {
    color: var(--text-primary);
}

html.dark .el-message-box__content {
    color: var(--text-secondary);
}

/* el-dialog 弹窗暗色适配（全局，所有 el-dialog 组件共用） */
html.dark .el-dialog {
    background-color: var(--dialog-bg);
    border-color: var(--border-hover);
    box-shadow: var(--dialog-shadow);
}

html.dark .el-dialog__title {
    color: var(--text-primary);
}

html.dark .el-dialog__header {
    border-bottom-color: var(--border-color);
    background-color: var(--dialog-bg);
}

html.dark .el-dialog__body {
    color: var(--text-primary);
    background-color: var(--dialog-bg);
}

html.dark .el-dialog__footer {
    border-top-color: var(--border-color);
    background-color: var(--dialog-bg);
}

html.dark .el-dialog__headerbtn .el-dialog__close {
    color: var(--text-tertiary);
}

html.dark .el-dialog__headerbtn:focus .el-dialog__close,
html.dark .el-dialog__headerbtn:hover .el-dialog__close {
    color: var(--text-primary);
}

/* v-modal 遮罩暗色 */
html.dark .v-modal {
    background-color: #000;
    opacity: var(--overlay-opacity) !important;
}

/* el-tabs 暗色适配 */
html.dark .el-tabs__item {
    color: var(--text-secondary);
}

html.dark .el-tabs__item:hover {
    color: var(--text-primary);
}

html.dark .el-tabs__item.is-active {
    color: var(--accent);
}

html.dark .el-tabs__active-bar {
    background-color: var(--accent);
}

html.dark .el-tabs__nav-wrap::after {
    background-color: var(--border-color);
}

html.dark .el-tabs__nav-prev,
html.dark .el-tabs__nav-next {
    color: var(--text-tertiary);
}

/* el-radio / el-checkbox 暗色适配 */
html.dark .el-radio__label,
html.dark .el-checkbox__label {
    color: var(--text-primary);
}

html.dark .el-radio__input.is-checked .el-radio__inner,
html.dark .el-checkbox__input.is-checked .el-checkbox__inner {
    background-color: var(--accent);
    border-color: var(--accent);
}

html.dark .el-radio__input.is-checked + .el-radio__label,
html.dark .el-checkbox__input.is-checked + .el-checkbox__label {
    color: var(--accent);
}

html.dark .el-checkbox__inner {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
}

html.dark .el-radio__inner {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
}

/* el-switch 暗色适配 */
html.dark .el-switch__core {
    background-color: #3a3a4a;
    border-color: #3a3a4a;
}

html.dark .el-switch.is-checked .el-switch__core {
    background-color: var(--accent);
    border-color: var(--accent);
}

/* el-tag 暗色适配（info 之外的通用兜底） */
html.dark .el-tag {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

/* el-tooltip 暗色适配 */
html.dark .el-tooltip__popper.is-dark {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

html.dark .el-tooltip__popper.is-dark[x-placement^=bottom] .popper__arrow,
html.dark .el-tooltip__popper.is-dark[x-placement^=bottom] .popper__arrow::after {
    border-bottom-color: var(--bg-hover);
}

html.dark .el-tooltip__popper.is-dark[x-placement^=top] .popper__arrow,
html.dark .el-tooltip__popper.is-dark[x-placement^=top] .popper__arrow::after {
    border-top-color: var(--bg-hover);
}

html.dark .el-tooltip__popper.is-dark[x-placement^=left] .popper__arrow,
html.dark .el-tooltip__popper.is-dark[x-placement^=left] .popper__arrow::after {
    border-left-color: var(--bg-hover);
}

html.dark .el-tooltip__popper.is-dark[x-placement^=right] .popper__arrow,
html.dark .el-tooltip__popper.is-dark[x-placement^=right] .popper__arrow::after {
    border-right-color: var(--bg-hover);
}

/* el-message-box 弹窗按钮区（暗色下边框更清楚） */
html.dark .el-message-box {
    border-color: var(--border-hover);
    box-shadow: var(--dialog-shadow);
}

html.dark .el-message-box__headerbtn .el-message-box__close {
    color: var(--text-tertiary);
}

html.dark .el-message-box__headerbtn:hover .el-message-box__close {
    color: var(--text-primary);
}

/* el-popper 通用边框/阴影（dropdown/select 等浮层） */
html.dark .el-popper {
    border-color: var(--border-hover) !important;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45) !important;
}

/* el-drawer 暗色适配 */
html.dark .el-drawer {
    background-color: var(--dialog-bg);
}

/* el-scrollbar 暗色适配 */
html.dark .el-scrollbar__bar.is-vertical > div {
    background-color: var(--border-hover);
}

/* el-pagination 暗色适配 */
html.dark .el-pagination.is-background .el-pager li {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}

html.dark .el-pagination.is-background .el-pager li:not(.disabled):hover {
    color: var(--accent);
}

html.dark .el-pagination.is-background .el-pager li.active {
    background-color: var(--accent);
    color: #fff;
}

html.dark .el-pagination.is-background .btn-prev,
html.dark .el-pagination.is-background .btn-next {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}

html.dark .el-pagination.is-background .btn-prev:not(:disabled):hover,
html.dark .el-pagination.is-background .btn-next:not(:disabled):hover {
    color: var(--accent);
}

/* el-message 图标/按钮配色 */
html.dark .el-message .el-icon-success { color: var(--success); }
html.dark .el-message .el-icon-error { color: var(--error); }
html.dark .el-message .el-icon-warning { color: #f59e0b; }
html.dark .el-message .el-icon-info { color: var(--accent); }

/* el-textarea 暗色适配 */
html.dark .el-textarea__inner {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

html.dark .el-textarea__inner::placeholder {
    color: var(--text-tertiary);
}

html.dark .el-textarea__inner:focus {
    border-color: var(--accent);
}

/* el-input 内数字/清空按钮图标颜色 */
html.dark .el-input.is-focus .el-input__inner {
    border-color: var(--accent);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
}

#app {
    display: flex;
    height: 100vh;
    background: var(--bg-primary);
}

/* ========== 侧边栏 ========== */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    transition: width 0.25s ease, margin-left 0.25s ease;
    flex-shrink: 0;
    border-right: 1px solid var(--border-color);
    overflow: hidden;
}

.sidebar.collapsed {
    width: 60px;
}

/* AI 页面折叠态：侧边栏平滑收起（宽度动画），顶部左侧图标栏淡入代替 */
.ai-app .sidebar {
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                margin-left 0.25s ease,
                border-right-width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ai-app .sidebar.collapsed {
    width: 0;
    border-right-width: 0;
}

.sidebar.collapsed .sidebar-header h3 span,
.sidebar.collapsed .sidebar-header .new-chat,
.sidebar.collapsed .session-item .session-title,
.sidebar.collapsed .sidebar-footer .kb-section,
.sidebar.collapsed .sidebar-footer .user-details,
.sidebar.collapsed .sidebar-footer .user-more-icon {
    display: none;
}

.sidebar.collapsed .new-chat-icon {
    display: flex;
}

.new-chat-icon {
    display: none;
    background: var(--accent);
    color: #fff;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.new-chat-icon:hover {
    background: var(--accent-hover);
}

.sidebar.collapsed .sidebar-header {
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.sidebar.collapsed .sidebar-header h3 {
    justify-content: center;
    font-size: 18px;
}

.sidebar.collapsed .session-list {
    padding: 8px 6px;
}

.sidebar.collapsed .session-item {
    padding: 8px 6px;
    justify-content: center;
}

.sidebar.collapsed .session-item .session-icon {
    display: block;
}

.sidebar.collapsed .sidebar-footer {
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.sidebar.collapsed .sidebar-footer .user-info-area {
    padding: 0;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    border-bottom: none;
}

.sidebar.collapsed .sidebar-footer .user-info-area .inline-theme-toggle {
    margin-left: 0;
}

.sidebar.collapsed .sidebar-footer .footer-actions {
    margin-top: 0;
    justify-content: center;
}

/* ===== 折叠态悬浮图标栏（DeepSeek 风格，悬浮于左上角） ===== */
.top-rail {
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 999;
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 5px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.04);
    -webkit-backdrop-filter: blur(14px) saturate(1.4);
    backdrop-filter: blur(14px) saturate(1.4);
    transition: box-shadow 0.2s ease;
}

.top-rail:hover {
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12), 0 2px 6px rgba(0, 0, 0, 0.05);
}

/* 顶栏出现/消失过渡：淡入 + 左上角滑入 */
.rail-fade-enter-active {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.rail-fade-leave-active {
    transition: all 0.2s ease;
}

.rail-fade-enter,
.rail-fade-leave-to {
    opacity: 0;
    transform: translate(-14px, -6px) scale(0.96);
}

.top-rail-logo,
.top-rail-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: none;
    background: transparent;
    color: #5b6472;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 19px;
    transition: all 0.18s ease;
}

/* logo：渐变圆角块，突出品牌感 */
.top-rail-logo {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    font-size: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.35);
}

.top-rail-logo:hover {
    filter: brightness(1.06);
    box-shadow: 0 3px 10px rgba(102, 126, 234, 0.45);
}

.top-rail-btn:hover {
    background: rgba(0, 0, 0, 0.06);
    color: #1f2937;
}

.top-rail-btn:active {
    transform: scale(0.94);
}

/* 暗色模式：深色毛玻璃 */
html.dark .top-rail {
    background: rgba(28, 30, 40, 0.72);
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

html.dark .top-rail:hover {
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
}

html.dark .top-rail-btn {
    color: #9ca3af;
}

html.dark .top-rail-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #f3f4f6;
}

.footer-actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    padding: 0 14px 10px;
}

/* ========== 侧边栏用户信息 ========== */
.user-info-area {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    cursor: pointer;
    transition: background 0.15s;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.user-info-area:hover {
    background: var(--bg-hover);
}

.user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-avatar.guest {
    background: linear-gradient(135deg, #9ca3af, #6b7280);
    font-size: 16px;
}

.user-details {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.3;
}

.user-sub {
    font-size: 11px;
    color: var(--text-tertiary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.3;
    margin-top: 1px;
}

.user-more-icon {
    color: var(--text-tertiary);
    font-size: 12px;
    flex-shrink: 0;
    transition: transform 0.2s, color 0.2s;
}

.user-info-area:hover .user-more-icon {
    color: var(--text-secondary);
}

/* 用户信息行内的主题切换按钮 */
.user-info-area .inline-theme-toggle {
    width: 32px;
    height: 32px;
    font-size: 15px;
    border-radius: 8px;
    flex-shrink: 0;
    margin-left: 4px;
}

.user-info-area .inline-theme-toggle:hover {
    background: var(--bg-hover);
    color: var(--accent);
}

/* 用户下拉菜单 - 向上展开 */
.user-dropdown-menu {
    display: none;
    position: absolute;
    bottom: calc(100% + 4px);
    left: 8px;
    right: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.12);
    z-index: 9999;
    padding: 6px 0;
    overflow: visible;
}

.user-dropdown-menu.open {
    display: block;
}

.user-dropdown-menu .dropdown-item {
    padding: 8px 16px;
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.12s;
    white-space: nowrap;
    border: none;
    background: transparent;
    width: 100%;
    font-family: inherit;
}

.user-dropdown-menu .dropdown-item:hover {
    background: var(--bg-hover);
}

.user-dropdown-menu .dropdown-item.danger {
    color: #ef4444;
}

.user-dropdown-menu .dropdown-item.danger:hover {
    background: rgba(239, 68, 68, 0.08);
}

.user-dropdown-menu .dropdown-item i {
    width: 16px;
    text-align: center;
    font-size: 14px;
}

/* 用户菜单遮罩 */
.user-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9998;
    background: transparent;
}

.sidebar-header {
    padding: 16px 14px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    margin: 0;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    line-height: 1;
    color: var(--text-primary);
}

.sidebar-header h3 i {
    color: var(--accent);
    font-size: 18px;
}

/* 标题行高平衡：图标与文字垂直居中，去除内联 SVG 的基线偏移 */
.sidebar-header h3 .icon {
    display: block;
    flex-shrink: 0;
}

.sidebar-header .new-chat {
    width: 100%;
    margin-top: 12px;
    background: var(--accent);
    border-color: var(--accent);
}

.sidebar-header .new-chat:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

/* ===== 侧边栏头部操作行 ===== */
.sidebar-header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.sidebar-header-top h3 {
    min-width: 0;
    overflow: hidden;
}

.sidebar-header-actions {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
}

.sidebar-search-toggle {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    width: 34px;
    height: 34px;
    border-radius: 9px;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.15s;
}

.sidebar-search-toggle:hover {
    background: var(--bg-hover);
    color: var(--accent);
}

.session-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.session-list::-webkit-scrollbar {
    width: 4px;
}

.session-list::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 2px;
}

.session-item {
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
    transition: background 0.15s;
    position: relative;
    white-space: nowrap;
    overflow: visible;
    text-overflow: ellipsis;
    font-size: 13px;
    color: var(--text-secondary);
}

.session-item:hover {
    background: var(--bg-hover);
}

.session-item.active {
    background: var(--bg-active);
    color: var(--text-primary);
    font-weight: 500;
}

.session-item .session-icon {
    font-size: 16px;
    flex-shrink: 0;
}

.session-item.active .session-icon {
    color: var(--accent);
}

.session-item .session-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ===== 会话列表日期分组标题 ===== */
.session-group-title {
    padding: 10px 12px 4px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar.collapsed .session-group-title {
    display: none;
}

.sidebar-footer {
    padding: 0px;
    border-top: 1px solid var(--border-color);
    position: relative;
}

/* ========== 主区域 ========== */
.main-area {
    flex: 1;
    max-width: 1000px;        /* 新增：限制最大宽度 */
    margin: 0 auto;          /* 新增：居中 */
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    background: var(--bg-primary);
    position: relative;
}

.main-header {
    flex: 0 0 56px;
    height: 56px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 0px;
    background: var(--bg-primary);
    box-sizing: border-box;
}

.main-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.main-title .badge {
    background: linear-gradient(135deg, var(--accent), #7c3aed);
    color: #fff;
    padding: 3px 10px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 500;
}

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

.buy-source-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 34px;
    padding: 0 14px;
    border-radius: 17px;
    background: linear-gradient(135deg, #ff8a3d, #ff5e62);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s;
    box-shadow: 0 2px 8px rgba(255, 94, 98, 0.3);
}

.buy-source-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(255, 94, 98, 0.4);
    color: #fff;
}

.buy-source-btn i {
    font-size: 14px;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    font-size: 17px;
}

.icon-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.theme-toggle {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    font-size: 17px;
}

.theme-toggle:hover {
    background: var(--bg-hover);
    color: var(--accent);
}

/* ========== 聊天容器 ========== */
.chat-container {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    padding: 20px 28px 230px;
    box-sizing: border-box;
}

.chat-container::-webkit-scrollbar {
    width: 6px;
}

.chat-container::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 3px;
}

/* ========== 滚动到底部按钮 ========== */
.scroll-bottom-btn {
    position: absolute;
    right: 24px;
    bottom: 215px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease, color 0.15s, box-shadow 0.15s;
    z-index: 10;
}

.scroll-bottom-btn:hover {
    color: var(--accent);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
}

.scroll-bottom-btn.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ========== 欢迎页 ========== */
.welcome-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px 40px;
    min-height: 100%;
    box-sizing: border-box;
}

.welcome-screen .logo {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--accent), #7c3aed);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #fff;
    margin-bottom: 24px;
    box-shadow: 0 8px 32px rgba(79, 70, 229, 0.35);
}

.welcome-screen h1 {
    font-size: 26px;
    margin: 0 0 8px;
    color: var(--text-primary);
    font-weight: 700;
}

.welcome-screen p {
    color: var(--text-secondary);
    margin: 0 0 28px;
    font-size: 14px;
}

.quick-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 32px;
}

.quick-btn {
    padding: 10px 18px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.quick-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-light);
}

.kb-selector {
    background: var(--bg-secondary);
    border-radius: 14px;
    padding: 16px 20px;
    width: 100%;
    max-width: 560px;
    text-align: left;
    border: 1px solid var(--border-color);
}

.kb-selector-title {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.kb-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.kb-chip {
    padding: 6px 14px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    cursor: pointer;
    font-size: 12px;
    color: var(--text-secondary);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.kb-chip:hover {
    border-color: var(--accent);
}

.kb-chip.selected {
    background: var(--accent);
    color: #fff;
    border-color: transparent;
}

.kb-chip .kb-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

/* ========== 消息 ========== */
.message {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: #fff;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
    font-weight: 600;
}

.message.user .message-avatar {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.message.assistant .message-avatar {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.message.assistant .avatar-ai {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.message-content {
    flex: 1;
    min-width: 0;
    max-width: 78%;
}

.message-role {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
    font-weight: 500;
}

.message.user .message-role {
    text-align: right;
}

.message-text {
    background: var(--ai-bubble);
    border-radius: 12px;
    padding: 10px 14px;
    line-height: 1.6;
    font-size: 14px;
    color: var(--ai-text);
    white-space: pre-wrap;
    word-break: break-word;
    border: 1px solid var(--border-color);
}

.message.user .message-text {
    background: var(--user-bubble);
    border-color: transparent;
    border-top-right-radius: 4px;
}

.message.assistant .message-text {
    border-top-left-radius: 4px;
}

/* ========== Markdown 渲染样式 ========== */
.message-text.marked {
    font-size: 14px;
    line-height: 1.6;
    white-space: normal !important;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* 对话内容中的超链接（亮暗主题自适应） */
.message-text.marked a,
.reasoning-body .marked a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid rgba(99, 102, 241, 0.35);
    transition: color 0.15s, border-color 0.15s;
    word-break: break-all;
}

.message-text.marked a:hover,
.reasoning-body .marked a:hover {
    color: var(--accent-hover);
    border-bottom-color: var(--accent-hover);
}

/* 重置 marked 生成的 pre 标签默认样式 */
.message-text.marked pre {
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
    border-radius: 0;
}
.message-text.marked pre code {
    background: transparent;
    border: none;
    padding: 0;
    border-radius: 0;
}
.message-text.marked :not(pre) > code[class*="language-"] {
    background: transparent;
    border: none;
    padding: 0;
}

.message-text.marked h1 {
    font-size: 1.4em;
    margin: 4px 0 2px;
    font-weight: 700;
}
.message-text.marked h2 {
    font-size: 1.25em;
    margin: 4px 0 2px;
    font-weight: 700;
}
.message-text.marked h3 {
    font-size: 1.1em;
    margin: 3px 0 1px;
    font-weight: 600;
}
.message-text.marked h4,
.message-text.marked h5,
.message-text.marked h6 {
    margin: 3px 0 1px;
    font-weight: 600;
}
.message-text.marked p {
    margin: 0 0 2px 0;
    line-height: 1.6;
}
.message-text.marked ul,
.message-text.marked ol {
    padding-left: 20px;
    margin: 2px 0;
}
.message-text.marked li {
    margin: 0;
    line-height: 1.6;
    padding: 0;
}
.message-text.marked li > ul,
.message-text.marked li > ol {
    margin: 1px 0;
}
.message-text.marked blockquote {
    border-left: 3px solid var(--accent);
    padding: 2px 10px;
    color: var(--text-secondary);
    margin: 2px 0;
    background: var(--accent-light);
    border-radius: 0 4px 4px 0;
}
.message-text.marked blockquote p {
    margin: 0;
}
.message-text.marked hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 4px 0;
}
.message-text.marked table {
    border-collapse: collapse;
    margin: 3px 0;
    width: 100%;
    font-size: 13px;
}
.message-text.marked table th,
.message-text.marked table td {
    border: 1px solid var(--border-color);
    padding: 3px 6px;
    text-align: left;
}
.message-text.marked table th {
    background: var(--bg-secondary);
    font-weight: 600;
}

/* 行内代码 - 无额外边框 */
.message-text.marked code:not([class]) {
    background: var(--bg-tertiary);
    padding: 1px 5px;
    border-radius: 4px;
    font-family: 'SF Mono', Monaco, Consolas, monospace;
    font-size: 0.88em;
    color: #e11d48;
}
html.dark .message-text.marked code:not([class]) {
    color: #fb7185;
}

/* ===== 代码块容器 ===== */
.message-text.marked .hljs-container {
    position: relative;
    margin: 4px 0;
    border-radius: 8px;
    overflow: hidden;
    background: var(--code-bg);
}

/* 代码块头部 */
.message-text.marked .code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.04);
    user-select: none;
}

.message-text.marked .code-lang {
    font-size: 10px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-family: 'SF Mono', Monaco, Consolas, monospace;
}

.message-text.marked .code-actions {
    display: flex;
    gap: 2px;
}

.message-text.marked .code-copy-btn {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 3px;
    font-family: inherit;
}

.message-text.marked .code-copy-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
}

.message-text.marked .code-copy-btn.copied {
    color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

/* 代码主体 */
.message-text.marked .code-body {
    display: flex;
    /*overflow: auto;*/
    max-height: 450px;
}

.message-text.marked .code-body::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}
.message-text.marked .code-body::-webkit-scrollbar-track {
    background: transparent;
}
.message-text.marked .code-body::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
}

/* 行号列 */
.message-text.marked .line-numbers {
    flex-shrink: 0;
    padding: 6px 0;
    text-align: right;
    color: rgba(255, 255, 255, 0.25);
    font-size: 12px;
    line-height: 1.5;
    font-family: 'SF Mono', Monaco, Consolas, monospace;
    user-select: none;
    min-width: 36px;
    padding-right: 8px;
    padding-left: 6px;
    background: rgba(0, 0, 0, 0.15);
}

.message-text.marked .line-numbers span {
    display: block;
    padding: 0 2px;
    min-height: 1.5em;
    line-height: 1.5;
}

/* 代码内容 - 逐行渲染，避免 hljs token 间换行 */
.message-text.marked .code-content {
    flex: 1;
    padding: 4px 12px;
    overflow-x: auto;
    font-family: 'SF Mono', Monaco, Consolas, monospace;
    font-size: 12.5px;
    line-height: 1.5;
    color: var(--code-text);
    white-space: normal;
    tab-size: 4;
}

.message-text.marked .code-content .code-line {
    display: block;
    white-space: pre;
    min-height: 1.5em;
    line-height: 1.5;
}

.message-text.marked .code-content code {
    background: transparent !important;
    color: inherit !important;
    padding: 0 !important;
    margin: 0 !important;
    font-size: inherit !important;
    font-family: inherit !important;
    line-height: inherit !important;
    white-space: normal !important;
    display: block !important;
}

/* ===== highlight.js 主题覆盖 ===== */
.message-text.marked .hljs {
    background: transparent !important;
    padding: 0 !important;
}

.message-text.marked .code-content .hljs {
    background: transparent !important;
}

/* --- highlight.js 语法颜色美化（Catppuccin 风格）--- */
/* 关键字 */
.message-text.marked .hljs-keyword,
.message-text.marked .hljs-selector-tag,
.message-text.marked .hljs-literal,
.message-text.marked .hljs-section,
.message-text.marked .hljs-link {
    color: #cba6f7;
}

/* 内置函数/类型 */
.message-text.marked .hljs-type,
.message-text.marked .hljs-built_in,
.message-text.marked .hljs-class .hljs-title {
    color: #89b4fa;
}

/* 字符串 */
.message-text.marked .hljs-string,
.message-text.marked .hljs-attr,
.message-text.marked .hljs-symbol,
.message-text.marked .hljs-bullet,
.message-text.marked .hljs-addition,
.message-text.marked .hljs-attribute,
.message-text.marked .hljs-meta-string {
    color: #a6e3a1;
}

/* 数字/布尔/常量 */
.message-text.marked .hljs-number,
.message-text.marked .hljs-regexp,
.message-text.marked .hljs-meta,
.message-text.marked .hljs-meta .hljs-keyword,
.message-text.marked .hljs-selector-attr,
.message-text.marked .hljs-selector-pseudo,
.message-text.marked .hljs-variable.language_ {
    color: #fab387;
}

/* 函数名 */
.message-text.marked .hljs-title,
.message-text.marked .hljs-title.function_,
.message-text.marked .hljs-name {
    color: #89dceb;
}

/* 注释 */
.message-text.marked .hljs-comment,
.message-text.marked .hljs-quote,
.message-text.marked .hljs-deletion,
.message-text.marked .hljs-formula {
    color: #6c7086;
    font-style: italic;
}

/* 标签/选择器 */
.message-text.marked .hljs-selector-id,
.message-text.marked .hljs-selector-class,
.message-text.marked .hljs-tag,
.message-text.marked .hljs-name,
.message-text.marked .hljs-params {
    color: #f38ba8;
}

/* 属性名 */
.message-text.marked .hljs-attribute {
    color: #f9e2af;
}

/* 变量/占位符 */
.message-text.marked .hljs-variable,
.message-text.marked .hljs-template-variable,
.message-text.marked .hljs-punctuation,
.message-text.marked .hljs-operator {
    color: #cdd6f4;
}

/* 泛用/强调 */
.message-text.marked .hljs-emphasis {
    font-style: italic;
}
.message-text.marked .hljs-strong {
    font-weight: 700;
}

/* ========== 推理区域 Markdown 样式适配 ========== */
.reasoning-body .marked,
.reasoning-body [class*="language-"],
.reasoning-body pre,
.reasoning-body code {
    white-space: normal !important;
}
.reasoning-body p {
    margin: 0 0 3px 0;
    line-height: 1.5;
}
.reasoning-body ul,
.reasoning-body ol {
    padding-left: 18px;
    margin: 2px 0;
}
.reasoning-body li {
    line-height: 1.5;
    padding: 1px 0;
}
.reasoning-body blockquote {
    border-left: 2px solid var(--accent);
    padding-left: 8px;
    margin: 3px 0;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-radius: 0 4px 4px 0;
    padding-top: 2px;
    padding-bottom: 2px;
}
.reasoning-body code:not([class]) {
    background: var(--bg-tertiary);
    padding: 1px 4px;
    border-radius: 3px;
    font-family: 'SF Mono', Monaco, Consolas, monospace;
    font-size: 0.9em;
    color: #e11d48;
}
html.dark .reasoning-body code:not([class]) {
    color: #fb7185;
}
.reasoning-body pre {
    background: var(--code-bg);
    border-radius: 6px;
    padding: 4px 10px;
    overflow-x: auto;
    margin: 3px 0;
    font-size: 12px;
    line-height: 1.5;
    color: var(--code-text);
    font-family: 'SF Mono', Monaco, Consolas, monospace;
    white-space: pre;
}

.reasoning-body .marked {
    white-space: normal !important;
    line-height: 1.55;
}
.reasoning-body .marked p {
    margin: 0 0 2px 0;
}
.reasoning-body .marked h1,
.reasoning-body .marked h2,
.reasoning-body .marked h3 {
    margin: 3px 0 1px;
}
.reasoning-body .marked ul,
.reasoning-body .marked ol {
    padding-left: 18px;
    margin: 2px 0;
}
.reasoning-body .marked li {
    line-height: 1.5;
    padding: 0;
}
.reasoning-body .marked blockquote {
    border-left: 2px solid var(--accent);
    padding: 2px 8px;
    margin: 2px 0;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-radius: 0 4px 4px 0;
}
.reasoning-body .marked code:not([class]) {
    background: var(--bg-tertiary);
    padding: 1px 4px;
    border-radius: 3px;
    font-family: 'SF Mono', Monaco, Consolas, monospace;
    font-size: 0.9em;
    color: #e11d48;
}
html.dark .reasoning-body .marked code:not([class]) {
    color: #fb7185;
}

/* ========== 编辑 ========== */
.message-edit-area {
    background: var(--edit-bg);
    border-radius: 12px;
    padding: 12px 14px;
    border: 2px solid var(--accent);
}

.edit-textarea {
    width: 100%;
    border: none;
    outline: none;
    resize: vertical;
    min-height: 60px;
    font-size: 14px;
    line-height: 1.6;
    font-family: inherit;
    background: transparent;
    color: var(--text-primary);
}

.edit-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.edit-actions button {
    padding: 4px 16px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.edit-confirm {
    background: var(--accent);
    color: #fff;
}

.edit-confirm:hover {
    background: var(--accent-hover);
}

.edit-cancel {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.edit-cancel:hover {
    background: var(--bg-hover);
}

/* ========== 推理过程 ========== */
.reasoning-block {
    margin-bottom: 6px;
    border: 1px solid var(--reasoning-border);
    border-radius: 10px;
    overflow: hidden;
    background: var(--reasoning-bg);
}

.reasoning-header {
    padding: 8px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: background 0.2s;
    user-select: none;
    background: var(--reasoning-bg);
    font-size: 12px;
}

.reasoning-header:hover {
    background: var(--bg-hover);
}

.reasoning-header .reasoning-icon {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6b7280, #9ca3af);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 9px;
    flex-shrink: 0;
}

.reasoning-header .reasoning-title {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    flex: 1;
}

.reasoning-header .reasoning-status {
    font-size: 11px;
    color: var(--text-tertiary);
}

.reasoning-header .reasoning-arrow {
    font-size: 10px;
    color: var(--text-tertiary);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reasoning-body {
    overflow: hidden;
    padding: 0 12px;
    font-size: 13px;
    color: var(--reasoning-text);
    line-height: 1.5;
    background: var(--reasoning-bg);
    max-height: 0;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.reasoning-streaming .reasoning-body {
    transition: none;
}

.reasoning-block.expanded .reasoning-body {
    padding: 4px 12px 8px;
}

.reasoning-streaming .reasoning-header .reasoning-icon {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ========== 消息操作按钮 ========== */
.message-actions {
    display: flex;
    gap: 4px;
    margin-top: 6px;
    opacity: 0;
    transition: opacity 0.2s;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.message:hover .message-actions {
    opacity: 1;
}

.message-action-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-tertiary);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 12px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.message-action-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.message-action-btn.danger:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

/* ========== 输入区域 ========== */
.input-area {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 16px 32px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-primary);
    z-index: 20;
    box-sizing: border-box;
}

.kb-pill-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 10px;
    align-items: center;
}

.kb-pill {
    padding: 4px 12px;
    border-radius: 14px;
    background: var(--accent-light);
    color: var(--accent);
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 4px;
    border: 1px solid var(--accent);
}

.kb-pill .remove {
    cursor: pointer;
    opacity: 0.6;
}

.kb-pill .remove:hover {
    opacity: 1;
}

.kb-pill-add {
    padding: 4px 12px;
    border-radius: 14px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    border: 1px dashed var(--border-hover);
}

.kb-pill-add:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.input-container {
    position: relative;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background: var(--bg-secondary);
    transition: border-color 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
}

.input-container:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

/* 语音输入状态提示条 */
.voice-recording-bar {
    position: absolute;
    top: -34px;
    left: 12px;
    right: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 14px;
    border-radius: 10px;
    background: rgba(244, 63, 94, 0.08);
    border: 1px solid rgba(244, 63, 94, 0.25);
    color: var(--error, #f43f5e);
    font-size: 12px;
    z-index: 5;
}

.voice-rec-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--error, #f43f5e);
    animation: voice-rec-pulse 1.2s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes voice-rec-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

/* 输入栏右侧操作区（语音 + 发送） */
.input-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 语音输入按钮 */
.voice-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 12px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s;
}

.voice-btn:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}

.voice-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.voice-btn.recording {
    background: rgba(244, 63, 94, 0.12);
    border-color: rgba(244, 63, 94, 0.5);
    color: var(--error, #f43f5e);
    animation: voice-btn-pulse 1.5s ease-in-out infinite;
}

.voice-btn.recording:hover {
    background: rgba(244, 63, 94, 0.18);
}

@keyframes voice-btn-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.3); }
    50% { box-shadow: 0 0 0 5px rgba(244, 63, 94, 0); }
}

.voice-btn-text {
    font-size: 12px;
}

/* 录音时的声音波动动画 */
.voice-btn-wave {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    height: 14px;
}

.voice-btn-wave i {
    display: inline-block;
    width: 2px;
    border-radius: 1px;
    background: currentColor;
    animation: voice-wave 1s ease-in-out infinite;
}

.voice-btn-wave i:nth-child(1) { height: 5px; }
.voice-btn-wave i:nth-child(2) { height: 12px; animation-delay: 0.2s; }
.voice-btn-wave i:nth-child(3) { height: 8px; animation-delay: 0.4s; }

@keyframes voice-wave {
    0%, 100% { transform: scaleY(0.6); }
    50% { transform: scaleY(1.2); }
}

.input-textarea {
    width: 100%;
    border: none;
    outline: none;
    resize: none;
    padding: 14px 16px;
    font-size: 14px;
    line-height: 1.6;
    font-family: inherit;
    max-height: 180px;
    min-height: 52px;
    background: transparent;
    color: var(--text-primary);
}

.input-textarea::placeholder {
    color: var(--text-tertiary);
}

.input-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-top: 1px solid var(--border-color);
}

.input-tools {
    display: flex;
    gap: 4px;
    align-items: center;
    flex-wrap: wrap;    /* 兜底：元素过多时允许换行 */
    min-width: 0;
}

.input-tool-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 13px;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.input-tool-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* 联网搜索开关按钮 */
.web-search-btn.active {
    background: rgba(64, 128, 255, 0.12);
    color: var(--accent, #4080ff);
}

.web-search-btn.active i {
    animation: web-search-pulse 2s ease-in-out infinite;
}

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

/* 消息中的联网搜索标签 */
.web-search-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: var(--accent, #4080ff);
    background: rgba(64, 128, 255, 0.1);
    border: 1px solid rgba(64, 128, 255, 0.25);
    border-radius: 6px;
    padding: 3px 8px;
    margin-bottom: 6px;
}

.web-search-tag.clickable {
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.web-search-tag.clickable:hover {
    background: rgba(64, 128, 255, 0.18);
    border-color: rgba(64, 128, 255, 0.45);
}

.ws-tag-arrow {
    font-size: 10px;
    opacity: 0.7;
}

.ws-tag-assistant {
    margin-top: 2px;
}

/* ==================== 联网搜索详情抽屉 ==================== */
.web-search-drawer .el-drawer__body {
    padding: 0;
    overflow: hidden;
    background: var(--bg-primary, #fff);
}

.ws-drawer-body {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.ws-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color, #e8e8e8);
    flex-shrink: 0;
}

.ws-drawer-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary, #1f2329);
}

.ws-drawer-title i {
    color: var(--accent, #4080ff);
}

.ws-drawer-close {
    border: none;
    background: transparent;
    color: var(--text-tertiary, #8f959e);
    font-size: 16px;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    line-height: 1;
}

.ws-drawer-close:hover {
    background: rgba(0, 0, 0, 0.06);
    color: var(--text-primary, #1f2329);
}

.ws-drawer-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px 18px;
}

.ws-section {
    margin-bottom: 24px;
}

.ws-section:last-child {
    margin-bottom: 8px;
}

.ws-section-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary, #4e5969);
    margin-bottom: 10px;
}

.ws-section-label i {
    color: var(--accent, #4080ff);
}

.ws-queries {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.ws-query-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    max-width: 100%;
    padding: 5px 12px;
    font-size: 13px;
    color: var(--text-primary, #1f2329);
    background: rgba(64, 128, 255, 0.08);
    border: 1px solid rgba(64, 128, 255, 0.25);
    border-radius: 16px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.ws-query-icon {
    font-size: 11px;
    color: var(--accent, #4080ff);
    flex-shrink: 0;
}

.ws-empty-text {
    font-size: 13px;
    color: var(--text-tertiary, #8f959e);
    padding: 8px 0;
}

.ws-source-item {
    border: 1px solid var(--border-color, #e8e8e8);
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.ws-source-item:hover {
    border-color: rgba(64, 128, 255, 0.45);
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.06);
}

.ws-source-link {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    text-decoration: none;
}

.ws-source-num {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(64, 128, 255, 0.12);
    color: var(--accent, #4080ff);
    font-size: 12px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 1px;
}

.ws-source-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.ws-source-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary, #1f2329);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ws-source-url {
    font-size: 11px;
    color: var(--text-tertiary, #8f959e);
    word-break: break-all;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ws-source-snippet {
    font-size: 12px;
    color: var(--text-secondary, #4e5969);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ws-source-ext {
    flex-shrink: 0;
    font-size: 12px;
    color: var(--text-tertiary, #8f959e);
    margin-top: 4px;
}

/* ==================== 联网搜索抽屉 暗黑模式 ==================== */
html.dark .web-search-drawer .el-drawer__body {
    background-color: var(--dialog-bg);
}

html.dark .ws-drawer-header {
    border-bottom-color: var(--border-color);
}

html.dark .ws-drawer-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

html.dark .ws-source-item {
    border-color: var(--border-color);
}

html.dark .ws-source-item:hover {
    border-color: rgba(64, 128, 255, 0.45);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

html.dark .ws-query-chip {
    background: rgba(99, 102, 241, 0.14);
    border-color: rgba(99, 102, 241, 0.35);
}

html.dark .ws-source-num {
    background: rgba(99, 102, 241, 0.2);
}

.send-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.send-btn:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.stop-btn {
    background: var(--error);
    color: #fff;
    border: none;
    padding: 8px 16px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.stop-btn:hover {
    opacity: 0.9;
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
}

.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 100;
}

/* ========== 版本切换 ========== */
.version-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
    padding: 4px 10px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    font-size: 12px;
    width: fit-content;
}

.version-switcher .version-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 6px;
    transition: all 0.2s;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.version-switcher .version-btn:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

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

.version-switcher .version-btn.version-new {
    color: var(--accent);
}

.version-switcher .version-btn.version-new:hover:not(:disabled) {
    background: var(--accent-light);
    color: var(--accent-hover);
}

.version-switcher .version-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 12px;
    min-width: 70px;
    text-align: center;
}

/* ========== 模型选择器 ========== */
.model-selector-deepseek {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 6px;
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
}

.model-selector-deepseek .model-option {
    flex: 1 1 200px;
    min-width: 0;
    padding: 10px 14px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
    position: relative;
    user-select: none;
    background: transparent;
    border: 1px solid transparent;
    font-family: inherit;
    overflow: hidden;
}

.model-selector-deepseek .model-option:hover:not(.active) {
    background: var(--bg-hover);
}

.model-selector-deepseek .model-option .model-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: color 0.25s;
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    /* 关键：让名称部分能收缩省略，不被图标/标签挤爆 */
}

.model-selector-deepseek .model-option .model-name .model-icon {
    font-size: 16px;
    flex-shrink: 0;
}

/* 名称文本本身：允许省略 */
.model-selector-deepseek .model-option .model-name .model-name-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
    flex: 0 1 auto;
}

.model-selector-deepseek .model-option .model-desc {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 2px;
    transition: color 0.25s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding-right: 22px;  /* 给右侧对勾留出位置 */
}

.model-selector-deepseek .model-option .model-badge {
    font-size: 10px;
    background: var(--accent-light);
    color: var(--accent);
    padding: 1px 7px;
    border-radius: 10px;
    font-weight: 500;
    margin-left: 2px;
    flex-shrink: 0;
    white-space: nowrap;
}

.model-selector-deepseek .model-option.active {
    background: var(--bg-primary);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--border-color);
}

.model-selector-deepseek .model-option.active .model-name {
    color: var(--text-primary);
}

.model-selector-deepseek .model-option.active .model-desc {
    color: var(--text-secondary);
}

.model-selector-deepseek .model-option .model-check {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent);
    font-size: 18px;
    opacity: 0;
    transition: opacity 0.25s;
}

.model-selector-deepseek .model-option.active .model-check {
    opacity: 1;
}

/* 停用的模型项：点击会引导用户去启用，视觉上明显弱化 */
.model-selector-deepseek .model-option.model-option-disabled {
    cursor: not-allowed;
    opacity: 0.6;
    background: var(--bg-tertiary);
}
.model-selector-deepseek .model-option.model-option-disabled:hover {
    opacity: 1;
    background: var(--bg-hover);
}

/* 欢迎页：「+N 更多 / 收起」功能按钮，视觉区别于真实模型项 */
.model-selector-deepseek .model-option.model-option-toggle {
    opacity: 0.9;
    background: var(--bg-tertiary);
}
.model-selector-deepseek .model-option.model-option-toggle:hover {
    background: var(--bg-primary);
}
.model-selector-deepseek .model-option.model-option-toggle .model-name .model-name-text {
    color: var(--text-primary);
    font-weight: 600;
}
.model-selector-deepseek .model-option.model-option-toggle .model-check {
    opacity: 0.9;
    color: var(--text-tertiary) !important;
}

.inline-model-toggle {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    padding: 3px;
    margin-left: 4px;
    max-width: 100%;
    /* 模型按钮过多时允许收缩，不挤爆工具栏 */
    overflow: hidden;
}

.inline-model-toggle .inline-opt {
    padding: 4px 10px;
    border-radius: 16px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-tertiary);
    font-weight: 500;
    border: none;
    background: transparent;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
    flex-shrink: 0;
    max-width: 140px;
    overflow: hidden;
}

/* 模型按钮里的文本：允许省略 */
.inline-model-toggle .inline-opt .opt-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.inline-model-toggle .inline-opt:hover {
    color: var(--text-secondary);
}

.inline-model-toggle .inline-opt.active {
    background: var(--bg-primary);
    color: var(--text-primary);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.inline-model-toggle .inline-opt .opt-badge {
    font-size: 9px;
    background: var(--accent-light);
    color: var(--accent);
    padding: 0 6px;
    border-radius: 8px;
    margin-left: 2px;
}

/* 输入栏：「⋯ 更多(N)」按钮——数字带紫色小泡 */
.inline-model-toggle .inline-opt.inline-opt-more .more-count {
    margin-left: 4px;
    padding: 1px 6px;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    box-shadow: 0 1px 3px rgba(99,102,241,.35);
    line-height: 1.4;
}
.inline-model-toggle .inline-opt.inline-opt-more:hover {
    background: var(--accent-light);
    color: var(--accent);
}

/* 输入栏：停用模型按钮样式 */
.inline-model-toggle .inline-opt.inline-opt-disabled {
    cursor: not-allowed;
    opacity: 0.55;
}
.inline-model-toggle .inline-opt.inline-opt-disabled:hover {
    opacity: 0.9;
    color: var(--text-tertiary);
    background: var(--bg-hover);
}

.config-panel {
    padding: 16px 18px;
    background: var(--bg-secondary);
    border-radius: 14px;
    margin-top: 10px;
    border: 1px solid var(--border-color);
}

/* 配置面板内的模型选择器：撑满面板宽度，不再居中限宽 */
.config-panel .model-selector-deepseek {
    max-width: none;
    margin: 0;
}

/* 移动端：模型选择器每个卡片占满整行 */
@media (max-width: 540px) {
    .model-selector-deepseek .model-option {
        flex: 1 1 100%;
    }
}

.config-panel-title {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

/* ========== 智能体 ========== */

/* 顶部标题区：当前智能体标签 */
.agent-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, rgba(99,102,241,.12), rgba(139,92,246,.12));
    border: 1px solid rgba(99,102,241,.28);
    border-radius: 999px;
    padding: 2px 10px;
    margin-left: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    cursor: default;
    flex-shrink: 0;
}
.agent-badge .agent-badge-avatar {
    font-size: 13px;
    line-height: 1;
}
.agent-badge .agent-badge-name {
    font-weight: 600;
    color: var(--text-primary);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.agent-badge .agent-badge-switch {
    cursor: pointer;
    color: var(--text-tertiary);
    font-size: 11px;
    padding: 0 2px;
    transition: color .2s;
}
.agent-badge .agent-badge-switch:hover {
    color: var(--accent);
}

/* 欢迎页：智能体模式选择器 */
.agent-selector {
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
}
.agent-selector .agent-selector-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.agent-selector .agent-selector-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 6px;
}
.agent-selector .agent-option {
    flex: 1 1 150px;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 10px;
    cursor: pointer;
    transition: all .25s cubic-bezier(.4,0,.2,1);
    text-align: left;
    position: relative;
    user-select: none;
    background: transparent;
    border: 1px solid transparent;
    font-family: inherit;
}
.agent-selector .agent-option:hover:not(.active) {
    background: var(--bg-hover);
}
.agent-selector .agent-option .agent-opt-avatar {
    width: 30px;
    height: 30px;
    border-radius: 9px;
    background: var(--bg-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    overflow: hidden;
}
.agent-selector .agent-option .agent-opt-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.agent-selector .agent-option .agent-opt-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 0 1 auto;
    min-width: 0;
}
.agent-selector .agent-option .agent-opt-desc {
    font-size: 11px;
    color: var(--text-tertiary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 0;
}
.agent-selector .agent-option .agent-opt-check {
    position: absolute;
    right: 10px;
    top: 10px;
    font-size: 13px;
    color: transparent;
    transition: color .2s;
}
.agent-selector .agent-option.active {
    background: var(--accent-light);
    border-color: var(--accent);
}
.agent-selector .agent-option.active .agent-opt-name {
    color: var(--accent);
}
.agent-selector .agent-option.active .agent-opt-check {
    color: var(--accent);
}
.agent-selector .agent-option.agent-option-more {
    flex: 0 1 auto;
}
.agent-selector .agent-option.agent-option-more .agent-opt-avatar {
    background: rgba(156,163,175,.16);
    color: #6b7280;
    font-weight: 600;
}

/* 会话中：智能体切换面板 */
.agent-picker-panel .agent-picker-list {
    max-height: 340px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.agent-picker-panel .agent-picker-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 10px;
    cursor: pointer;
    transition: all .2s;
    border: 1px solid transparent;
    position: relative;
}
.agent-picker-panel .agent-picker-item:hover:not(.active) {
    background: var(--bg-hover);
}
.agent-picker-panel .agent-picker-item.active {
    background: var(--accent-light);
    border-color: var(--accent);
}
.agent-picker-panel .agent-picker-item .agent-picker-avatar {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: var(--bg-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    flex-shrink: 0;
    overflow: hidden;
}
.agent-picker-panel .agent-picker-item .agent-picker-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.agent-picker-panel .agent-picker-item .agent-picker-info {
    flex: 1;
    min-width: 0;
}
.agent-picker-panel .agent-picker-item .agent-picker-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}
.agent-picker-panel .agent-picker-item.active .agent-picker-name {
    color: var(--accent);
}
.agent-picker-panel .agent-picker-item .agent-picker-desc {
    font-size: 11px;
    color: var(--text-tertiary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.agent-picker-panel .agent-picker-item .agent-picker-check {
    font-size: 14px;
    color: transparent;
    flex-shrink: 0;
}
.agent-picker-panel .agent-picker-item.active .agent-picker-check {
    color: var(--accent);
}

/* 会话中：知识库选择面板（卡片布局，与附件一致） */
.kb-picker-panel .kb-picker-header-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}
.kb-card {
    cursor: pointer;
    user-select: none;
}
.kb-card.active {
    background: var(--accent-light);
    border-color: var(--accent);
}
.kb-card.active .doc-card-name {
    color: var(--accent);
}
.kb-card-icon {
    width: 100%;
    height: 40px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: #fff;
    flex-shrink: 0;
}
.kb-card-desc {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.kb-card-check {
    font-size: 14px;
    color: transparent;
    flex-shrink: 0;
    transition: color .2s;
}
.kb-card.active .kb-card-check {
    color: var(--accent);
}
.kb-picker-panel .kb-picker-empty {
    text-align: center;
    padding: 22px 0;
    color: var(--text-tertiary);
    font-size: 13px;
}
.kb-picker-panel .kb-picker-empty i {
    font-size: 20px;
    display: block;
    margin-bottom: 6px;
}

/* 智能体模式下的 AI 消息头像 */
.message.assistant .avatar-ai.avatar-agent {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    overflow: hidden;
}
.message.assistant .avatar-ai.avatar-agent img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 输入栏：智能体切换按钮 */
.input-tool-btn.agent-tool-btn.active {
    color: var(--accent);
    background: var(--accent-light);
}
.input-tool-btn.agent-tool-btn .agent-tool-name {
    max-width: 70px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ========== 空状态 ========== */
.empty-chat {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    flex-direction: column;
    gap: 12px;
    box-sizing: border-box;
}

.empty-chat i {
    font-size: 48px;
}

/* ========== 会话下拉菜单 ========== */
.session-more-wrapper {
    position: relative;
    display: inline-flex;
    flex-shrink: 0;
    overflow: visible;
    z-index: 10;
}

.session-more-btn {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.15s;
    flex-shrink: 0;
    font-size: 14px;
    position: relative;
    z-index: 5;
}

.session-more-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.session-dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 4px);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
    min-width: 140px;
    z-index: 9999999999 !important;
    padding: 6px 0;
    margin-top: 0;
    overflow: visible;
}

.session-dropdown-menu.open {
    display: block;
}

.session-dropdown-menu .dropdown-item {
    padding: 8px 18px;
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.12s;
    white-space: nowrap;
    border: none;
    background: transparent;
    width: 100%;
    font-family: inherit;
}

.session-dropdown-menu .dropdown-item:hover {
    background: var(--bg-hover);
}

.session-dropdown-menu .dropdown-item.danger {
    color: #ef4444;
}

.session-dropdown-menu .dropdown-item.danger:hover {
    background: rgba(239, 68, 68, 0.08);
}

.session-dropdown-menu .dropdown-item i {
    width: 16px;
    text-align: center;
    font-size: 14px;
}

.dropdown-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9998;
    display: none;
    background: transparent;
}

.dropdown-overlay.show {
    display: none;
}

/* ========== 侧边栏/输入区浮层 暗黑模式 ========== */
html.dark .session-dropdown-menu,
html.dark .user-dropdown-menu {
    background: var(--bg-secondary);
    border-color: var(--border-hover);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.5);
}

html.dark .config-panel {
    border-color: var(--border-hover);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

html.dark .doc-quick-preview {
    border-color: var(--border-hover);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

html.dark .session-title-input,
html.dark .session-title-editable-input {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.sidebar.collapsed .session-more-btn {
    display: none;
}

.sidebar.collapsed .session-more-wrapper {
    display: none;
}

/* ========== 会话标题编辑 ========== */
.session-title-edit {
    flex: 1;
    min-width: 0;
}

.session-title-input {
    width: 100%;
    padding: 2px 6px;
    border: 1px solid var(--accent);
    border-radius: 4px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
}

.main-title .session-title-editable {
    display: inline-block;
    cursor: pointer;
    border-radius: 4px;
    padding: 2px 6px;
    transition: background 0.15s, border-color 0.15s;
    border: 1px solid transparent;
}

.main-title .session-title-editable:hover {
    background: var(--bg-hover);
    border-color: var(--border-color);
}

.main-title .session-title-editable-input {
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--accent);
    font-size: inherit;
    font-weight: 500;
    color: var(--text-primary);
    outline: none;
    padding: 0 2px;
    min-width: 60px;
    max-width: 320px;
}

/* ========== 文档卡片网格 ========== */
.doc-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 6px;
    margin: 4px 0;
}

.doc-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 4px 10px 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: relative;
    min-height: 54px;
    justify-content: center;
}

.doc-card:hover {
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

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

.doc-card-name {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.doc-card-meta {
    display: flex;
    gap: 6px;
    font-size: 10px;
    color: var(--text-tertiary);
    margin-top: 0;
}

.doc-card-thumb {
    width: 100%;
    height: 56px;
    object-fit: cover;
    border-radius: 6px;
    background: var(--bg-secondary);
}

.doc-card-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 2px;
    padding-top: 4px;
    border-top: 1px solid var(--border-color);
}

.doc-card-del {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    font-size: 12px;
    transition: all 0.15s;
}

.doc-card-del:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.08);
}

.doc-card-upload-placeholder {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 4px 10px 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-height: 54px;
    color: var(--text-tertiary);
}

.doc-card-upload-placeholder:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-light);
}

.doc-card-upload-placeholder .upload-icon {
    font-size: 18px;
}

.doc-card-upload-placeholder .upload-text {
    font-size: 11px;
    font-weight: 500;
}

.doc-card-upload-placeholder .upload-hint {
    font-size: 9px;
    color: var(--text-tertiary);
    opacity: 0.7;
}

.doc-quick-preview {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
    max-height: 320px;
    overflow-y: auto;
}

.doc-quick-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-color);
}

.doc-quick-header span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.doc-quick-close {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: 18px;
    padding: 0 4px;
}

.doc-quick-close:hover {
    color: var(--text-primary);
}

.doc-ref-stats {
    font-size: 11px;
    color: var(--text-tertiary);
    font-weight: 400;
}

.doc-ref-stats .ref-count-on {
    color: var(--accent);
    font-weight: 600;
}

.doc-ref-control {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.doc-ref-switch {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
}

.doc-ref-switch input {
    display: none;
}

.doc-ref-slider {
    width: 34px;
    height: 18px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    position: relative;
    transition: all 0.25s ease;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.doc-ref-slider::after {
    content: '';
    position: absolute;
    top: 1px;
    left: 1px;
    width: 14px;
    height: 14px;
    background: #fff;
    border-radius: 50%;
    transition: all 0.25s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.doc-ref-switch input:checked + .doc-ref-slider {
    background: var(--accent);
    border-color: var(--accent);
}

.doc-ref-switch input:checked + .doc-ref-slider::after {
    left: 17px;
}

.doc-ref-label {
    font-size: 11px;
    font-weight: 500;
    min-width: 32px;
    transition: color 0.2s;
}

.doc-ref-label.ref-on {
    color: var(--accent);
}

.doc-ref-label.ref-off {
    color: var(--text-tertiary);
}

.doc-tool-btn {
    position: relative;
}

.doc-btn-badge {
    position: absolute;
    top: -6px;
    right: -4px;
    background: var(--accent);
    color: #fff;
    border-radius: 10px;
    min-width: 18px;
    height: 16px;
    padding: 0 4px;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 16px;
    pointer-events: none;
    box-shadow: 0 0 0 2px var(--bg-secondary);
}

/* ========== 引用区域 ========== */
.referenced-items {
    margin-top: 8px;
    padding: 10px 12px;
    background: var(--bg-secondary);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.message.user .referenced-items {
    background: rgba(99, 102, 241, 0.06);
    border-color: var(--accent-light);
}

.ref-items-header {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-color);
}

.message.user .ref-items-header {
    color: var(--accent);
}

.ref-items-header i {
    color: var(--accent);
}

.ref-items-hint {
    font-size: 10px;
    color: var(--text-tertiary);
    margin-left: auto;
    font-weight: 400;
}

.ref-items-group {
    margin-top: 6px;
}

.ref-items-group:first-child {
    margin-top: 0;
}

.ref-items-group-label {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.ref-items-group-label i {
    font-size: 12px;
}

.ref-items-grid {
    display: grid;
    gap: 6px;
}

.ref-docs-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}

.ref-kbs-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
}

.ref-item-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 10px;
    background: var(--bg-primary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
    cursor: pointer;
}

.ref-item-card:hover {
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transform: translateY(-1px);
}

.message.user .ref-item-card {
    /*background: rgba(255, 255, 255, 0.5);*/
}

.message.user .ref-item-card:hover {
    background: rgba(99, 102, 241, 0.08);
}

.ref-item-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

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

.ref-item-name {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ref-item-desc {
    font-size: 10px;
    color: var(--text-tertiary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 120px;
}

.ref-item-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 10px;
    color: var(--text-tertiary);
    margin-top: 1px;
}

.ref-item-type {
    background: var(--bg-tertiary);
    padding: 0 6px;
    border-radius: 3px;
    font-size: 9px;
    font-weight: 600;
    color: var(--text-secondary);
}

.ref-item-thumb {
    width: 34px;
    height: 34px;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
    background: var(--bg-secondary);
}

.ref-item-action {
    flex-shrink: 0;
    font-size: 12px;
    color: var(--text-tertiary);
    padding: 4px 6px;
    border-radius: 4px;
    transition: all 0.2s;
}

.ref-item-card:hover .ref-item-action {
    color: var(--accent);
    background: var(--accent-light);
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    #app {
        height: 100vh;
        height: 100dvh;
    }

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

    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 101;
        margin-left: -260px;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.2);
    }

    .sidebar.open {
        margin-left: 0;
    }

    .sidebar.collapsed {
        width: 260px;
    }

    /* 移动端：AI 页面折叠态侧边栏恢复显示（以滑出形式出现） */
    .ai-app .sidebar.collapsed {
        display: flex;
        width: 260px;
        border-right-width: 1px;
    }

    .sidebar.collapsed .sidebar-header h3 span,
    .sidebar.collapsed .sidebar-header .new-chat,
    .sidebar.collapsed .session-item .session-title,
    .sidebar.collapsed .sidebar-footer .kb-section,
    .sidebar.collapsed .sidebar-footer .theme-toggle,
    .sidebar.collapsed .sidebar-footer .user-details,
    .sidebar.collapsed .sidebar-footer .user-more-icon {
        display: revert;
    }

    .sidebar.collapsed .new-chat-icon {
        display: none !important;
    }

    .sidebar.collapsed .sidebar-header {
        padding: 16px 14px;
        display: block;
    }

    .sidebar.collapsed .sidebar-header h3 {
        justify-content: flex-start;
        font-size: 15px;
    }

    .sidebar.collapsed .session-list {
        padding: 8px;
    }

    .sidebar.collapsed .session-item {
        padding: 10px 12px;
        justify-content: flex-start;
    }

    .sidebar.collapsed .sidebar-footer {
        padding: 12px;
        display: block;
    }

    .sidebar.collapsed .sidebar-footer .user-info-area {
        padding: 10px 14px;
        flex-direction: row;
        justify-content: flex-start;
        gap: 10px;
        border-bottom: 1px solid var(--border-color);
    }

    .sidebar.collapsed .sidebar-footer .user-info-area .inline-theme-toggle {
        margin-left: 4px;
    }

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

    .main-area {
        width: 100%;
    }

    .main-header {
        padding: 0 12px;
        height: 50px;
        flex-basis: 50px;
    }

    .main-title {
        font-size: 14px;
    }

    /* 移动端：购买源码按钮只显示购物车图标，避免标题区溢出 */
    .buy-source-btn {
        padding: 0 10px;
    }

    .buy-source-btn span {
        display: none;
    }

    /* 移动端：无悬浮栏，主标题无需右移 */
    .ai-app .sidebar.collapsed + .main-area .main-title {
        padding-left: 0;
    }

    .chat-container {
        padding: 12px 12px 200px;
    }

    .message {
        gap: 8px;
        margin-bottom: 16px;
    }

    .message-avatar {
        width: 34px;
        height: 34px;
        font-size: 14px;
    }

    .message-text {
        padding: 10px 14px;
        font-size: 13px;
    }

    .input-area {
        padding: 10px 12px 14px;
        padding-bottom: calc(14px + env(safe-area-inset-bottom));
    }

    .scroll-bottom-btn {
        right: 12px;
        bottom: 90px;
    }

    .input-toolbar {
        padding: 6px 8px;
        flex-wrap: wrap;     /* 移动端工具栏允许换行 */
        gap: 4px;
    }

    .input-tools {
        gap: 2px;
    }

    .input-tool-btn {
        padding: 4px 8px;
        font-size: 12px;
    }

    /* 移动端：联网搜索按钮只显示图标，节省空间 */
    .web-search-btn .web-search-text {
        display: none;
    }

    .web-search-btn {
        padding: 4px 7px;
    }

    /* 移动端：模型切换器紧凑一行，不换行 */
    .inline-model-toggle {
        flex-wrap: nowrap;
        overflow: hidden;
        margin-left: 0;
    }

    .inline-model-toggle .inline-opt {
        padding: 3px 8px;
        font-size: 11px;
        max-width: 100px;
    }

    /* 移动端：更多按钮里的文字缩短 */
    .inline-model-toggle .inline-opt.inline-opt-more .opt-text {
        max-width: 32px;
    }

    .send-btn {
        padding: 6px 14px;
        font-size: 12px;
    }

    /* 移动端：语音按钮紧凑显示，隐藏文字和波动动画 */
    .voice-btn {
        padding: 6px 9px;
        font-size: 12px;
        gap: 0;
    }

    .voice-btn-text,
    .voice-btn-wave {
        display: none;
    }

    .voice-recording-bar {
        top: -30px;
        left: 8px;
        right: 8px;
        padding: 5px 10px;
        font-size: 11px;
    }

    .kb-selector {
        padding: 12px;
    }

    .welcome-screen {
        padding: 20px 16px;
    }

    .welcome-screen h1 {
        font-size: 20px;
    }

    .welcome-screen p {
        font-size: 13px;
        margin-bottom: 20px;
    }

    .welcome-screen .logo {
        width: 56px;
        height: 56px;
        font-size: 24px;
        margin-bottom: 16px;
    }

    .quick-actions {
        margin-bottom: 20px;
        gap: 8px;
    }

    .quick-btn {
        padding: 8px 14px;
        font-size: 12px;
    }

    .kb-selector {
        padding: 10px 14px;
    }

    .model-selector-deepseek .model-option {
        padding: 8px 12px;
    }

    .model-selector-deepseek .model-option .model-name {
        font-size: 13px;
    }

    .model-selector-deepseek .model-option .model-desc {
        font-size: 11px;
    }

    .message-actions {
        opacity: 1;
    }

    .doc-card-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }

    .doc-quick-preview {
        max-height: 260px;
        padding: 10px 12px;
    }

    .doc-ref-control .doc-ref-label {
        display: none;
    }

    .doc-ref-slider {
        width: 30px;
        height: 16px;
    }

    .doc-ref-slider::after {
        width: 12px;
        height: 12px;
        top: 1px;
        left: 1px;
    }

    .doc-ref-switch input:checked + .doc-ref-slider::after {
        left: 15px;
    }

    .desktop-only {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .ref-docs-grid,
    .ref-kbs-grid {
        grid-template-columns: 1fr;
    }
}