/* ARPM 对话系统 - 简洁风格 */

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f9f9f9;
    --bg-sidebar: #f5f5f5;
    --bg-hover: #e5e5e5;
    --bg-input: #f5f5f5;
    
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    
    --border-color: #e0e0e0;
    --border-light: #f0f0f0;
    
    --accent: #1a1a1a;
    --accent-hover: #333333;
    --accent-blue: #2563eb;
    --accent-green: #10a37f;
    --accent-red: #ef4444;
    --accent-soft: #eef2ff;
    
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-focus: 0 0 0 3px rgba(37, 99, 235, 0.14);
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    --sidebar-width: 260px;
    --panel-width: 300px;
    --header-height: 48px;
}

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

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
}

.app {
    height: 100vh;
    display: flex;
}

/* 侧边栏 */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.btn-new-chat {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

.btn-new-chat:hover {
    background: var(--bg-hover);
    border-color: var(--text-secondary);
}

.btn-new-chat span {
    font-size: 16px;
    font-weight: 300;
}

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

.session-item {
    padding: 10px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 13px;
    margin-bottom: 4px;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

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

.session-item:hover .btn-export {
    opacity: 1;
}

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

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

.session-info {
    min-width: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.session-role {
    font-size: 12px;
    color: var(--text-tertiary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.session-actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.session-rename,
.session-delete {
    width: 22px;
    height: 22px;
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    opacity: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.session-item:hover .session-rename,
.session-item:hover .session-delete,
.session-rename:focus-visible,
.session-delete:focus-visible {
    opacity: 1;
}

.session-rename:hover,
.session-rename:focus-visible,
.session-delete:hover,
.session-delete:focus-visible {
    color: var(--text-primary);
    background: var(--bg-primary);
}

.session-delete:hover,
.session-delete:focus-visible {
    color: #dc2626;
}

.btn-export {
    width: 20px;
    height: 20px;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    opacity: 0;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    font-size: 12px;
}

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

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid var(--border-color);
}

.btn-settings {
    width: 100%;
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

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

/* 主内容区 */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--bg-primary);
}

.header {
    height: var(--header-height);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
}

.model-selector {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

/* 聊天容器 */
.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px 0;
    scroll-behavior: smooth;
}

/* 欢迎消息 */
.welcome {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-secondary);
}

.welcome h1 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.welcome p {
    font-size: 15px;
}

/* 消息样式 */
.message {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-light);
}

.message:last-child {
    border-bottom: none;
}

.message-content-wrapper {
    max-width: 768px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 16px;
}

.message-avatar {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
}

.message.assistant .message-avatar {
    background: var(--accent-green);
    color: white;
}

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

.message-avatar.has-image {
    background: transparent;
    color: transparent;
    overflow: hidden;
}

.message-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: inherit;
}

.session-label {
    display: block;
    margin-top: 2px;
    color: var(--text-tertiary);
    font-size: 11px;
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.session-label-edit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 4px;
    color: var(--text-tertiary);
    font-size: 13px;
    line-height: 1;
}

.session-label-edit:hover,
.session-label-edit:focus {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.message-body {
    flex: 1;
    min-width: 0;
}

.message-header {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.message-text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-primary);
    word-wrap: break-word;
}

.message-text pre {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    margin: 12px 0;
    overflow-x: auto;
}

.message-text code {
    font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
    font-size: 13px;
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
}

.message-text pre code {
    background: none;
    padding: 0;
}

.message-text p {
    margin-bottom: 12px;
}

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

/* 输入区域 */
.input-container {
    padding: 16px 20px 20px;
    background: var(--bg-primary);
}

.input-wrapper {
    max-width: 768px;
    margin: 0 auto;
    position: relative;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: flex-end;
    transition: border-color 0.2s;
}

.input-wrapper:focus-within {
    border-color: var(--text-secondary);
}

.input-wrapper textarea {
    flex: 1;
    background: transparent;
    border: none;
    padding: 12px 16px;
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-primary);
    resize: none;
    min-height: 24px;
    max-height: 200px;
    outline: none;
    font-family: inherit;
}

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

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

.btn-ghost {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: #ffffff;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

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

button.is-busy {
    opacity: 0.72;
}

.btn-send, .btn-stop {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.btn-send {
    background: var(--accent);
    color: white;
}

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

.btn-send:disabled {
    background: var(--bg-hover);
    color: var(--text-tertiary);
    cursor: not-allowed;
}

.btn-stop {
    background: var(--accent-red);
    color: white;
}

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

.input-footer {
    max-width: 768px;
    margin: 8px auto 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-tertiary);
}

.input-footer .divider {
    color: var(--border-color);
}

#status-text.processing {
    color: var(--accent-blue);
}

#status-text.success {
    color: var(--accent-green);
}

#status-text.error {
    color: var(--accent-red);
}

/* 右侧信息面板 */
.info-panel {
    width: var(--panel-width);
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.panel-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.panel-section:last-child {
    border-bottom: none;
}

.panel-header {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    font-weight: 600;
    flex-shrink: 0;
}

.panel-header .count {
    background: var(--bg-hover);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
}

.panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

.panel-content .empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-tertiary);
    font-size: 13px;
}

/* 召回内容区块样式 */
.retrieval-block {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px;
    margin-bottom: 8px;
    font-size: 12px;
}

.retrieval-block.kb {
    border-left: 3px solid #3b82f6;
}

.retrieval-block.chat {
    border-left: 3px solid #10b981;
}

.retrieval-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
    font-size: 11px;
    color: var(--text-secondary);
}

.retrieval-source {
    font-weight: 500;
}

.retrieval-time {
    font-size: 10px;
    color: var(--text-tertiary);
}

.retrieval-text {
    line-height: 1.5;
    color: var(--text-primary);
    word-break: break-word;
}

/* 思维链样式 */
.cot-content {
    font-size: 12px;
    line-height: 1.6;
}

.cot-line {
    margin-bottom: 8px;
    padding-left: 12px;
    border-left: 2px solid var(--border-color);
}

.cot-line.prefix-match {
    border-left-color: #f59e0b;
    background: rgba(245, 158, 11, 0.05);
    padding: 4px 8px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.protocol-log {
    margin-top: 8px;
    padding: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    font-size: 11px;
    line-height: 1.45;
    white-space: pre-wrap;
    overflow-x: auto;
}

.rag-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    margin-bottom: 8px;
    font-size: 12px;
    line-height: 1.5;
}

.rag-item:last-child {
    margin-bottom: 0;
}

.rag-index {
    display: inline-block;
    background: var(--accent-blue);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    margin-bottom: 6px;
}

.rag-text {
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 思维链样式 */
.cot-step {
    display: flex;
    gap: 8px;
    padding: 8px;
    margin-bottom: 6px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 12px;
    line-height: 1.5;
}

.cot-step:last-child {
    margin-bottom: 0;
}

.cot-step-num {
    width: 18px;
    height: 18px;
    background: var(--accent-blue);
    color: white;
    border-radius: 50%;
    font-size: 10px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cot-step-text {
    color: var(--text-secondary);
    flex: 1;
}

/* 弹窗 */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-primary);
    width: 90%;
    max-width: 480px;
    max-height: 85vh;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-size: 16px;
    font-weight: 600;
}

.btn-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: all 0.2s;
}

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

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
}

/* 配置表单 */
.session-name-modal {
    background: rgba(15, 23, 42, 0.28);
}

.session-name-dialog {
    max-width: 420px;
}

.session-name-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.session-name-body label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.session-name-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font: inherit;
    outline: none;
    transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.session-name-input:focus {
    border-color: var(--text-secondary);
    box-shadow: var(--shadow-focus);
}

.session-name-hint {
    font-size: 12px;
    color: var(--text-tertiary);
}

.session-name-error {
    min-height: 18px;
    font-size: 12px;
    color: #dc2626;
}

.session-name-footer {
    gap: 8px;
}

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

.config-section:last-child {
    margin-bottom: 0;
}

.config-section h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-item {
    margin-bottom: 12px;
}

.form-item:last-child {
    margin-bottom: 0;
}

.form-item label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-item input,
.form-item textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-item input:focus,
.form-item textarea:focus {
    outline: none;
    border-color: var(--text-secondary);
}

.form-item textarea {
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.btn-primary {
    padding: 10px 20px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    padding: 8px 16px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--text-secondary);
}

/* 文件上传 */
.file-upload {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

#file-name {
    font-size: 13px;
    color: var(--text-secondary);
}

/* 进度条 */
.progress-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.progress-bar {
    flex: 1;
    height: 6px;
    background: var(--bg-hover);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-blue);
    border-radius: 3px;
    transition: width 0.3s;
    width: 0%;
}

#progress-text {
    font-size: 12px;
    color: var(--text-secondary);
    min-width: 40px;
    text-align: right;
}

.knowledge-info {
    padding: 10px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--text-secondary);
}

.knowledge-info strong {
    color: var(--text-primary);
}

#test-result {
    margin-left: 12px;
    font-size: 12px;
}

#test-result.success {
    color: var(--accent-green);
}

#test-result.error {
    color: var(--accent-red);
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 2000;
}

.toast {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 13px;
    animation: slideIn 0.3s ease;
    max-width: 320px;
}

.toast.success {
    border-left-color: var(--accent-green);
}

.toast.error {
    border-left-color: var(--accent-red);
}

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

/* 加载指示器 */
.typing {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 0;
}

.typing span {
    width: 6px;
    height: 6px;
    background: var(--text-tertiary);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-4px);
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* 响应式 */
@media (max-width: 1200px) {
    .info-panel {
        display: none;
    }
}

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

/* 隐藏类 */
.hidden {
    display: none !important;
}

/* 知识库管理 */
.btn-link {
    background: none;
    border: none;
    color: var(--accent-blue);
    cursor: pointer;
    font-size: 13px;
}

.btn-link:hover {
    text-decoration: underline;
}

.modal-large {
    width: 700px;
    max-width: 90vw;
    max-height: 80vh;
}

.kb-toolbar {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.kb-toolbar input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.kb-toolbar select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
}

.kb-list {
    max-height: 500px;
    overflow-y: auto;
}

.kb-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 8px;
    background: var(--bg-secondary);
}

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

.kb-item-title {
    font-weight: 500;
    font-size: 13px;
}

.kb-item-badges {
    display: flex;
    gap: 4px;
}

.badge {
    font-size: 12px;
    padding: 2px 4px;
    border-radius: 4px;
}

.badge.blind {
    background: #fef3c7;
}

.badge.conditional {
    background: #dbeafe;
}

.kb-item-text {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 8px;
}

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

.btn-icon {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

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

.btn-icon.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.btn-danger {
    color: var(--accent-red);
    border-color: var(--accent-red);
}

.btn-danger:hover {
    background: var(--accent-red);
    color: white;
}

/* 条件编辑 */
.cond-rule {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 12px;
    background: var(--bg-secondary);
}

.rule-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.rule-header select {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: white;
}

.rule-header label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-secondary);
}

.rule-settings {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.rule-settings input,
.rule-settings select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

/* 新增徽章样式 */
.badge.nostalgia {
    background: #fde68a;
    color: #92400e;
}

.badge.keywords {
    background: #ddd6fe;
    color: #5b21b6;
}

.badge.scene {
    background: #c7d2fe;
    color: #3730a3;
}

/* 关键词编辑 */
.keyword-item {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    align-items: center;
}

.keyword-item input[type="text"] {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.keyword-item input[type="number"] {
    width: 80px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.help-text {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 16px;
}

.hint {
    color: var(--text-tertiary);
    font-size: 12px;
    margin-top: 4px;
    display: block;
}

/* 场景管理 */
.scene-toolbar {
    margin-bottom: 16px;
}

.scene-item {
    display: flex;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    background: var(--bg-secondary);
}

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

.scene-range {
    color: var(--text-secondary);
    font-size: 13px;
    margin-right: 12px;
}

/* 诊断系统 */
.diag-toolbar {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.diag-summary {
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

.diag-summary.healthy {
    background: #dcfce7;
    color: #166534;
}

.diag-summary.unhealthy {
    background: #fee2e2;
    color: #991b1b;
}

.diag-checks {
    max-height: 400px;
    overflow-y: auto;
}

.diag-check {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-light);
    gap: 12px;
}

.diag-check.ok {
    color: var(--text-secondary);
}

.diag-check.warning {
    background: #fef3c7;
}

.diag-check.error {
    background: #fee2e2;
}

.diag-icon {
    font-size: 16px;
}

.diag-name {
    font-weight: 500;
    min-width: 120px;
}

.diag-message {
    flex: 1;
    color: var(--text-secondary);
    font-size: 13px;
}

/* 知识库过滤下拉 */
#kb-filter {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
    min-width: 120px;
}


/* ============================================
   新版知识库管理样式 - 增强版
   ============================================ */

/* 弹窗尺寸 */
.modal-xlarge {
    width: 90vw;
    max-width: 1200px;
    height: 85vh;
    max-height: 900px;
}

.modal-xlarge .modal-body {
    padding: 0;
    overflow: hidden;
}

.kb-header-stats {
    font-size: 13px;
    color: var(--text-secondary);
    margin-left: auto;
    margin-right: 16px;
}

/* 知识库容器布局 */
.kb-container {
    display: flex;
    height: 100%;
}

/* 左侧边栏 */
.kb-sidebar {
    width: 220px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.kb-sidebar h3 {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 12px 16px 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 统计面板 */
.kb-stats-panel {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.kb-stats-list {
    padding: 0 8px;
}

.stat-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 2px;
}

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

.stat-item.active {
    background: var(--accent);
    color: white;
}

.stat-item.active .stat-count {
    background: rgba(255,255,255,0.2);
    color: white;
}

.stat-icon {
    font-size: 14px;
    margin-right: 8px;
    width: 20px;
    text-align: center;
}

.stat-label {
    flex: 1;
    font-size: 13px;
}

.stat-count {
    font-size: 12px;
    font-weight: 600;
    padding: 2px 8px;
    background: var(--bg-hover);
    border-radius: 12px;
    min-width: 28px;
    text-align: center;
}

/* 来源面板 */
.kb-sources-panel {
    flex: 1;
    overflow-y: auto;
}

.kb-sources-list {
    padding: 0 16px 16px;
}

.source-item {
    display: flex;
    align-items: center;
    padding: 6px 8px;
    font-size: 12px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    margin-bottom: 2px;
}

.source-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.source-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.source-count {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-left: 8px;
}

/* 主内容区 */
.kb-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* 工具栏 */
.kb-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.kb-search-box {
    flex: 1;
    display: flex;
    gap: 8px;
}

.kb-search-box input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
}

.kb-search-box input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.btn-rag {
    padding: 8px 16px;
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 13px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.btn-rag:hover {
    background: #1d4ed8;
}

.btn-rag:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.kb-toolbar-actions select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
    font-size: 13px;
}

/* RAG结果区域 */
.kb-rag-results {
    background: #eff6ff;
    border-bottom: 1px solid #dbeafe;
    padding: 12px 16px;
}

.kb-rag-results .rag-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 13px;
    color: #1e40af;
    margin-bottom: 4px;
}

.kb-rag-results .rag-query {
    font-size: 12px;
    color: #3b82f6;
}

/* 列表容器 */
.kb-list-container {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.kb-list-header {
    display: grid;
    grid-template-columns: 50px 80px 1fr 120px 140px;
    gap: 12px;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.kb-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}

.kb-loading {
    text-align: center;
    padding: 40px;
    color: var(--text-tertiary);
}

.kb-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-tertiary);
}

.kb-empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* 知识片段项 */
.kb-row {
    display: grid;
    grid-template-columns: 50px 80px 1fr 120px 140px;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    align-items: start;
    transition: background 0.15s;
}

.kb-row:hover {
    background: var(--bg-secondary);
}

.kb-row.loading {
    opacity: 0.6;
    pointer-events: none;
}

.kb-col-index {
    font-size: 12px;
    color: var(--text-tertiary);
    font-family: monospace;
    padding-top: 4px;
}

.kb-col-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.kb-col-content {
    min-width: 0;
}

.kb-text-preview {
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    cursor: pointer;
}

.kb-text-preview:hover {
    color: var(--accent-blue);
}

.kb-text-full {
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-primary);
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-top: 8px;
    white-space: pre-wrap;
}

.kb-col-source {
    font-size: 12px;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kb-col-actions {
    display: flex;
    gap: 4px;
    justify-content: flex-end;
}

.kb-col-actions .btn-icon {
    width: 28px;
    height: 28px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 小徽章 */
.badge-mini {
    font-size: 11px;
    padding: 2px 5px;
    border-radius: 4px;
    cursor: help;
}

/* 分页 */
.kb-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.btn-page {
    padding: 6px 16px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-page:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--text-secondary);
}

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

.page-info {
    font-size: 13px;
    color: var(--text-secondary);
}

.page-total {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-left: 8px;
}

/* 操作状态指示器 */
.kb-action-status {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 12px 24px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 3000;
    animation: slideDown 0.3s ease;
}

.kb-action-status.success {
    border-color: var(--accent-green);
}

.kb-action-status.error {
    border-color: var(--accent-red);
}

.kb-action-status.processing {
    border-color: var(--accent-blue);
}

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

.status-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 文本展开动画 */
.kb-text-full {
    animation: expand 0.2s ease;
}

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

/* 响应式调整 */
@media (max-width: 1024px) {
    .kb-sidebar {
        width: 180px;
    }
    
    .kb-list-header,
    .kb-row {
        grid-template-columns: 40px 70px 1fr 100px 120px;
    }
}

@media (max-width: 768px) {
    .modal-xlarge {
        width: 95vw;
        height: 90vh;
    }
    
    .kb-sidebar {
        display: none;
    }
    
    .kb-list-header,
    .kb-row {
        grid-template-columns: 40px 1fr 80px;
    }
    
    .kb-col-badges,
    .kb-col-source {
        display: none;
    }
}


/* ============================================
   消融测试 (Ablation Study) 样式
   ============================================ */

.ablation-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 16px;
}

.ablation-item {
    margin-bottom: 12px;
}

.ablation-item:last-child {
    margin-bottom: 0;
}

.ablation-master {
    background: white;
    border: 2px solid var(--accent-blue);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 12px;
}

.ablation-master.disabled {
    border-color: var(--border-color);
    opacity: 0.7;
}

.ablation-divider {
    text-align: center;
    font-size: 11px;
    color: var(--text-tertiary);
    margin: 12px 0;
    padding: 4px;
}

.ablation-subitems {
    padding-left: 12px;
    border-left: 2px solid var(--border-color);
}

.ablation-subitems.disabled {
    opacity: 0.5;
    pointer-events: none;
}

.ablation-toggle {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
}

.ablation-toggle input {
    display: none;
}

.toggle-slider {
    width: 44px;
    height: 24px;
    background: var(--border-color);
    border-radius: 12px;
    position: relative;
    flex-shrink: 0;
    transition: background 0.3s;
}

.toggle-slider::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform 0.3s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.ablation-toggle input:checked + .toggle-slider {
    background: var(--accent-green);
}

.ablation-toggle input:checked + .toggle-slider::after {
    transform: translateX(20px);
}

.ablation-label {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ablation-label strong {
    font-size: 14px;
    color: var(--text-primary);
}

.ablation-desc {
    font-size: 12px;
    color: var(--text-secondary);
}

.hint-text {
    font-size: 11px;
    color: var(--text-tertiary);
    font-weight: normal;
    text-transform: none;
    margin-left: 8px;
}

.config-section .hint {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-top: 6px;
    display: block;
}

/* 消融测试警告提示 */
.ablation-warning {
    background: #fef3c7;
    border: 1px solid #fcd34d;
    border-radius: var(--radius-md);
    padding: 12px 16px;
    margin-top: 16px;
    font-size: 13px;
    color: #92400e;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ablation-warning.hidden {
    display: none;
}


/* ============================================
   消息反馈机制样式
   ============================================ */

.message-feedback {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border-light);
    opacity: 0;
    transition: opacity 0.2s;
}

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

.feedback-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.feedback-btn:hover {
    background: var(--bg-hover);
    border-color: var(--text-secondary);
}

.feedback-btn.liked {
    background: #dcfce7;
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.feedback-btn.disliked {
    background: #fee2e2;
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.feedback-btn.report {
    margin-left: auto;
    color: var(--accent-red);
    border-color: var(--accent-red);
}

.feedback-btn.report:hover {
    background: var(--accent-red);
    color: white;
}

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

.feedback-status {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-left: 8px;
}

/* 举报弹窗 */
.report-modal {
    max-width: 400px;
}

.report-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 16px 0;
}

.report-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.report-option:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
}

.report-option input {
    width: 18px;
    height: 18px;
}

.report-detail {
    margin-top: 12px;
}

.report-detail textarea {
    width: 100%;
    min-height: 80px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 13px;
    resize: vertical;
}

/* 重新生成动画 */
.message.regenerating {
    opacity: 0.6;
}

.regenerate-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-blue);
    font-size: 13px;
    padding: 8px 0;
}

.regenerate-indicator .spinner {
    width: 14px;
    height: 14px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 归档标签 */
.archived-tag {
    display: inline-block;
    font-size: 10px;
    padding: 2px 6px;
    background: #fef3c7;
    color: #92400e;
    border-radius: 4px;
    margin-left: 8px;
}

/* ============================================
   清空聊天记录按钮样式
   ============================================ */

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

.btn-clear-chat:hover {
    color: var(--accent-red);
    background: rgba(239, 68, 68, 0.1);
}

/* 删除单条消息按钮 */
.feedback-btn.delete-msg {
    color: var(--text-tertiary);
    border-color: transparent;
    opacity: 0;
    transition: opacity 0.2s;
}

.message:hover .feedback-btn.delete-msg {
    opacity: 1;
}

.feedback-btn.delete-msg:hover {
    color: var(--accent-red);
    border-color: var(--accent-red);
    background: rgba(239, 68, 68, 0.1);
}

/* 确认弹窗特殊样式 */
#clear-chat-modal .modal-content {
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ==================== 诊断模块样式 ==================== */

.diagnose-container {
    max-height: 70vh;
    overflow-y: auto;
}

.diagnose-toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: center;
}

.diagnose-section {
    margin-bottom: 24px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.diagnose-section h3 {
    margin-bottom: 12px;
    font-size: 16px;
    color: var(--text-primary);
}

.diagnose-content {
    margin-top: 12px;
}

.diagnose-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px;
    margin-bottom: 8px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--border-color);
}

.diagnose-item.ok {
    border-left-color: var(--accent-green);
}

.diagnose-item.warning {
    border-left-color: #f59e0b;
}

.diagnose-item.error {
    border-left-color: var(--accent-red);
}

.diagnose-item.success {
    border-left-color: var(--accent-green);
}

.status-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.diagnose-item .detail {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ARPM 报告标签 */
.arpm-tabs, .delete-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.arpm-tab, .delete-tab {
    padding: 6px 12px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.arpm-tab:hover, .delete-tab:hover {
    background: var(--bg-hover);
}

.arpm-tab.active, .delete-tab.active {
    background: var(--accent);
    color: white;
}

.component-card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
}

.component-card.active {
    border-left: 3px solid var(--accent-green);
}

.component-card.disabled {
    border-left: 3px solid var(--text-tertiary);
    opacity: 0.7;
}

.component-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.status-badge {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
}

.status-badge.active {
    background: #d1fae5;
    color: #065f46;
}

.status-badge.disabled {
    background: var(--bg-hover);
    color: var(--text-tertiary);
}

.component-desc {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.component-config {
    display: grid;
    gap: 6px;
}

.config-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
}

.config-item code {
    background: var(--bg-hover);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 11px;
}

.config-desc {
    color: var(--text-tertiary);
    font-size: 11px;
}

/* 遗忘逻辑卡片 */
.forgetting-card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
}

.forgetting-header {
    margin-bottom: 10px;
}

.formula {
    background: var(--bg-sidebar);
    padding: 12px;
    border-radius: var(--radius-sm);
    font-family: "Courier New", monospace;
    font-size: 13px;
    margin-bottom: 10px;
    overflow-x: auto;
}

.forgetting-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.parameters {
    display: grid;
    gap: 4px;
    padding-left: 12px;
    border-left: 2px solid var(--border-color);
}

.param-item {
    font-size: 12px;
}

.param-item code {
    background: var(--bg-hover);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.stats-card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 16px;
    border: 1px solid var(--border-color);
}

.stats-card h4 {
    margin-bottom: 12px;
    font-size: 14px;
    color: var(--text-primary);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 13px;
}

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

/* 删除列表 */
.delete-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.chunks-list {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px;
}

.chunk-item {
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    padding: 10px;
    margin-bottom: 8px;
    border: 1px solid var(--border-light);
}

.chunk-item:last-child {
    margin-bottom: 0;
}

.chunk-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
    gap: 8px;
}

.chunk-header code {
    font-size: 11px;
    background: var(--bg-hover);
    padding: 2px 6px;
    border-radius: 4px;
}

.chunk-source, .chunk-role {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 12px;
    background: var(--bg-hover);
}

.chunk-role.user {
    background: #dbeafe;
    color: #1e40af;
}

.chunk-role.assistant {
    background: #d1fae5;
    color: #065f46;
}

.chunk-text {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    line-height: 1.4;
}

.chunk-meta {
    font-size: 11px;
    color: var(--text-tertiary);
}

.btn-small {
    padding: 4px 10px;
    font-size: 11px;
}

/* 诊断总结 */
.diagnose-summary {
    display: flex;
    gap: 16px;
    padding: 12px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    background: var(--bg-primary);
}

.diagnose-summary.healthy {
    border: 1px solid var(--accent-green);
}

.diagnose-summary.unhealthy {
    border: 1px solid var(--accent-red);
}

.diagnose-summary .ok { color: var(--accent-green); }
.diagnose-summary .warning { color: #f59e0b; }
.diagnose-summary .error { color: var(--accent-red); }

#diagnose-status {
    font-size: 13px;
    padding: 4px 8px;
    border-radius: 4px;
}

#diagnose-status.processing {
    color: var(--accent-blue);
}

#diagnose-status.success {
    color: var(--accent-green);
}

#diagnose-status.error {
    color: var(--accent-red);
}

#diagnose-status.warning {
    color: #f59e0b;
}


/* ========== 帮助按钮 ========== */
.help-btn {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 1px solid var(--text-tertiary);
    background: transparent;
    color: var(--text-tertiary);
    font-size: 11px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: all 0.2s;
}

.help-btn:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
}

/* 帮助内容 */
.help-section {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

.help-section:last-child {
    border-bottom: none;
}

.help-section h3 {
    font-size: 15px;
    color: var(--accent-blue);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-section h4 {
    font-size: 13px;
    color: var(--text-primary);
    margin: 16px 0 8px 0;
}

.help-formula {
    background: #f8f9fa;
    padding: 12px;
    border-radius: 6px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 12px;
    color: #495057;
    margin: 8px 0;
    border-left: 3px solid var(--accent-blue);
}

.help-params {
    display: grid;
    gap: 6px;
    margin: 8px 0;
}

.help-param {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-size: 12px;
}

.help-param code {
    background: #e9ecef;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: monospace;
    color: #495057;
    white-space: nowrap;
}

.help-param-desc {
    color: var(--text-secondary);
}

.help-note {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    padding: 10px;
    border-radius: 6px;
    font-size: 12px;
    color: #856404;
    margin-top: 12px;
}

.help-note.disabled {
    background: #f8f9fa;
    border-color: #dee2e6;
    color: #6c757d;
}

.help-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    margin: 8px 0;
}

.help-table th,
.help-table td {
    padding: 8px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.help-table th {
    background: var(--bg-secondary);
    font-weight: 600;
}

.help-flow {
    background: #f8f9fa;
    padding: 16px;
    border-radius: 8px;
    font-family: monospace;
    font-size: 12px;
    line-height: 1.8;
    margin: 12px 0;
}

.help-flow-step {
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-flow-arrow {
    color: var(--accent-blue);
    margin-left: 20px;
}

.tuning-panel {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.tuning-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.preset-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tuning-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.tuning-guide {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
}

.tuning-guide strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.tuning-guide p + p {
    margin-top: 8px;
}

.chunk-guide {
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .tuning-grid {
        grid-template-columns: 1fr;
    }
}

/* Open-source showcase layout */
:root {
    --sidebar-width: 320px;
    --panel-width: 380px;
    --header-height: 96px;
}

.app {
    min-width: 1120px;
    background: #ffffff;
}

.sidebar {
    background: #ffffff;
}

.brand-panel {
    height: 118px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
}

.brand-logo {
    font-size: 38px;
    line-height: 1;
    font-weight: 800;
    color: #111111;
}

.sidebar-tools {
    border-bottom: 1px solid var(--border-color);
}

.tool-row {
    width: 100%;
    min-height: 56px;
    padding: 10px 18px;
    border: 0;
    border-bottom: 1px solid var(--border-light);
    background: #ffffff;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
    font: inherit;
    cursor: pointer;
    transition: background 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.tool-row:hover {
    background: var(--bg-secondary);
    box-shadow: inset 3px 0 0 var(--accent-blue);
}

.tool-row:active {
    transform: translateY(1px);
}

.tool-row:disabled {
    cursor: wait;
    color: var(--text-tertiary);
    background: var(--bg-secondary);
}

.tool-row:focus-visible,
.btn-settings:focus-visible,
.btn-new-chat:focus-visible,
.btn-ghost:focus-visible,
.btn-secondary:focus-visible,
.btn-primary:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
    outline-offset: 2px;
}

.tool-icon {
    width: 30px;
    height: 30px;
    border: 1px solid #dbe3f8;
    border-radius: var(--radius-md);
    background: var(--accent-soft);
    color: var(--accent-blue);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    flex-shrink: 0;
}

.tool-copy {
    display: flex;
    flex-direction: column;
    gap: 1px;
    line-height: 1.25;
}

.tool-copy strong {
    font-size: 14px;
    font-weight: 650;
}

.tool-copy small,
.btn-settings small {
    display: block;
    color: var(--text-tertiary);
    font-size: 11px;
    font-weight: 400;
    margin-top: 2px;
}

.session-area {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--border-color);
}

.btn-new-chat {
    width: auto;
    margin: 14px;
}

.session-list {
    padding: 0 14px 14px;
}

.session-item {
    border: 1px solid transparent;
}

.session-item.active {
    border-color: var(--border-color);
    background: var(--bg-secondary);
}

.sidebar-footer {
    padding: 0;
    border-top: 0;
}

body.sidebar-collapsed .sidebar {
    width: 72px;
}

body.sidebar-collapsed .brand-logo,
body.sidebar-collapsed .tool-copy,
body.sidebar-collapsed .session-area,
body.sidebar-collapsed .btn-settings span {
    display: none;
}

body.sidebar-collapsed .brand-panel {
    height: 72px;
}

body.sidebar-collapsed .brand-panel::before {
    content: "A";
    font-size: 28px;
    font-weight: 800;
}

body.sidebar-collapsed .tool-row,
body.sidebar-collapsed .btn-settings {
    justify-content: center;
    padding: 0;
}

.btn-settings {
    min-height: 58px;
    padding: 0 18px;
    border-radius: 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.25;
    transition: background 0.16s ease, box-shadow 0.16s ease;
}

.btn-settings:hover {
    box-shadow: inset 3px 0 0 var(--accent-green);
}

.btn-settings strong {
    font-size: 14px;
    font-weight: 650;
}

.main {
    min-width: 0;
    border-right: 1px solid var(--border-color);
}

.header {
    height: var(--header-height);
    position: relative;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    grid-template-rows: 48px 36px;
    align-items: center;
    gap: 0 20px;
    padding: 8px 28px;
}

.session-meta {
    grid-column: 1 / 2;
    justify-self: start;
    min-width: 310px;
    height: 36px;
    padding: 0 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    color: var(--text-secondary);
}

.session-meta strong,
.status-strip strong {
    color: var(--text-primary);
    font-weight: 600;
    max-width: 170px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.status-strip {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
    justify-self: center;
    min-width: 420px;
    height: 30px;
    padding: 0 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    background: #ffffff;
    box-shadow: 0 1px 0 rgba(0,0,0,0.02);
}

.status-strip span {
    white-space: nowrap;
}

.status-strip .success,
#arpm-status-text.success {
    color: var(--accent-green);
}

.status-strip .error,
#arpm-status-text.error {
    color: var(--accent-red);
}

.top-actions {
    grid-column: 3 / 4;
    grid-row: 1 / 3;
    justify-self: end;
    width: 265px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.theme-switch,
.language-switch {
    height: 36px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-bottom: 1px solid var(--border-color);
}

.theme-switch button,
.language-switch button,
.btn-export-current {
    border: 0;
    background: #ffffff;
    color: var(--text-primary);
    font: inherit;
    cursor: pointer;
}

.theme-switch button:first-child,
.language-switch button:first-child {
    border-right: 1px solid var(--border-color);
}

.theme-switch button.active,
.language-switch button.active {
    background: var(--bg-secondary);
    font-weight: 600;
    box-shadow: inset 0 -2px 0 var(--accent-blue);
}

.btn-export-current {
    width: 100%;
    height: 42px;
}

.btn-export-current:hover,
.theme-switch button:hover,
.language-switch button:hover {
    background: var(--bg-hover);
}

.welcome-actions {
    margin-top: 22px;
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.chat-container {
    padding: 22px 0;
    background: #ffffff;
}

.welcome {
    padding: 76px 24px;
}

.welcome h1 {
    font-size: 40px;
    margin-bottom: 14px;
}

.message-content-wrapper {
    max-width: min(920px, calc(100% - 72px));
}

.input-container {
    padding: 18px 34px 24px;
    border-top: 1px solid var(--border-color);
}

.input-wrapper,
.input-footer {
    max-width: 920px;
}

.input-wrapper {
    min-height: 86px;
    background: #ffffff;
    border-color: #111111;
    border-radius: var(--radius-md);
}

.input-wrapper textarea {
    min-height: 82px;
    padding: 26px 18px;
    text-align: center;
    font-size: 24px;
}

.input-wrapper textarea:focus {
    text-align: left;
}

.info-panel {
    background: #ffffff;
}

.panel-section {
    min-height: 0;
}

.panel-retrieval {
    flex: 2;
}

.panel-cot {
    flex: 1;
}

.panel-header {
    min-height: 48px;
    padding: 0 16px;
    font-size: 14px;
}

.panel-content {
    padding: 14px;
}

.diagnose-toolbar.compact {
    padding: 0;
    border: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

#common-diagnose-status {
    color: var(--text-secondary);
    font-size: 13px;
}

#common-diagnose-status.success {
    color: var(--accent-green);
}

#common-diagnose-status.error {
    color: var(--accent-red);
}

#common-diagnose-status.processing {
    color: var(--accent-blue);
}

#params-modal .modal-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

#params-modal .config-section {
    margin-bottom: 0;
}

.rag-item,
.retrieval-block,
.cot-step {
    border-radius: var(--radius-sm);
}

.rag-text {
    -webkit-line-clamp: unset;
    color: var(--text-primary);
}

@media (max-width: 1280px) {
    :root {
        --sidebar-width: 270px;
        --panel-width: 320px;
    }

    .app {
        min-width: 980px;
    }

    .header {
        grid-template-columns: 1fr auto;
        grid-template-rows: auto auto;
        height: 112px;
    }

    .top-actions {
        grid-column: 2 / 3;
    }

    .session-meta,
    .status-strip {
        min-width: 0;
        width: 100%;
    }
}

/* Theme skins: default immersive chat, optional clean research */
body.theme-chat {
    --bg-primary: #fbfdff;
    --bg-secondary: rgba(255,255,255,0.72);
    --bg-sidebar: rgba(255,255,255,0.74);
    --bg-hover: rgba(37,99,235,0.08);
    --bg-input: rgba(255,255,255,0.88);
    --border-color: rgba(148,163,184,0.34);
    --border-light: rgba(148,163,184,0.22);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    background:
        radial-gradient(circle at 16% 10%, rgba(96,165,250,0.22), transparent 28%),
        radial-gradient(circle at 86% 16%, rgba(16,185,129,0.16), transparent 30%),
        linear-gradient(135deg, #f8fbff 0%, #eef6ff 46%, #f7fbf7 100%);
}

body.theme-chat .app,
body.theme-chat .chat-container,
body.theme-chat .main,
body.theme-chat .info-panel,
body.theme-chat .sidebar {
    background: transparent;
}

body.theme-chat .sidebar,
body.theme-chat .info-panel,
body.theme-chat .header,
body.theme-chat .input-container {
    backdrop-filter: blur(18px);
}

body.theme-chat .brand-panel,
body.theme-chat .sidebar-tools,
body.theme-chat .session-area,
body.theme-chat .sidebar-footer,
body.theme-chat .panel-header,
body.theme-chat .input-container {
    border-color: rgba(148,163,184,0.26);
}

body.theme-chat .brand-logo {
    letter-spacing: 0;
    color: #172554;
}

body.theme-chat .tool-row,
body.theme-chat .btn-settings,
body.theme-chat .session-item,
body.theme-chat .status-strip,
body.theme-chat .session-meta,
body.theme-chat .top-actions,
body.theme-chat .rag-item,
body.theme-chat .cot-step,
body.theme-chat .config-section,
body.theme-chat .modal-content {
    background: rgba(255,255,255,0.72);
    box-shadow: 0 14px 40px rgba(15,23,42,0.08);
}

body.theme-chat .message {
    border-bottom: 0;
}

body.theme-chat .message-content-wrapper {
    max-width: min(860px, calc(100% - 72px));
}

body.theme-chat .message-body {
    padding: 14px 16px;
    border: 1px solid rgba(148,163,184,0.26);
    border-radius: 16px;
    background: rgba(255,255,255,0.82);
    box-shadow: 0 10px 28px rgba(15,23,42,0.06);
}

body.theme-chat .message.user .message-content-wrapper {
    flex-direction: row-reverse;
}

body.theme-chat .message.user .message-body {
    background: linear-gradient(135deg, rgba(219,234,254,0.94), rgba(236,253,245,0.86));
}

.avatar-setting-row {
    gap: 8px;
}

.avatar-setting-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.avatar-preview {
    width: 42px;
    height: 42px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-hover);
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    flex: 0 0 auto;
    overflow: hidden;
}

.avatar-preview[data-role="assistant"] {
    background: var(--accent-green);
    color: #fff;
}

.avatar-preview.has-image {
    background: transparent;
    color: transparent;
}

.avatar-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.avatar-upload-button,
.avatar-reset-button {
    min-height: 34px;
}

.form-hint {
    color: var(--text-tertiary);
    font-size: 12px;
    line-height: 1.4;
}

body.theme-chat .input-wrapper {
    border: 1px solid rgba(37,99,235,0.24);
    border-radius: 18px;
    background: rgba(255,255,255,0.9);
    box-shadow: 0 18px 48px rgba(15,23,42,0.1);
}

body.theme-chat .btn-send {
    background: linear-gradient(135deg, #2563eb, #10a37f);
}

body.theme-chat .welcome h1 {
    font-size: 46px;
    color: #172554;
}

body.theme-chat .welcome p {
    color: #475569;
}

body.theme-research {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-sidebar: #ffffff;
    --bg-hover: #f1f5f9;
    --bg-input: #ffffff;
    --border-color: #d8dee8;
    --border-light: #edf1f6;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #9ca3af;
    --accent: #111827;
    --accent-hover: #374151;
    background: #ffffff;
}

body.theme-research .app {
    background: #ffffff;
}

body.theme-research .brand-logo {
    font-size: 34px;
}

body.theme-research .header {
    height: 92px;
    background: #ffffff;
}

body.theme-research .tool-row,
body.theme-research .btn-settings,
body.theme-research .session-meta,
body.theme-research .status-strip,
body.theme-research .top-actions,
body.theme-research .input-wrapper,
body.theme-research .rag-item,
body.theme-research .cot-step,
body.theme-research .config-section,
body.theme-research .modal-content {
    box-shadow: none;
}

body.theme-research .chat-container {
    background: #ffffff;
}

body.theme-research .message {
    padding: 14px 0;
}

body.theme-research .message-content-wrapper {
    max-width: min(920px, calc(100% - 56px));
}

body.theme-research .message-body {
    padding: 0;
    background: transparent;
    border: 0;
}

body.theme-research .input-wrapper {
    min-height: 74px;
    border-color: #111827;
    border-radius: 8px;
}

body.theme-research .input-wrapper textarea {
    min-height: 70px;
    font-size: 18px;
}

body.theme-research .welcome h1 {
    font-size: 36px;
}

/* =========================================================
   Chat Theme Modal UI Polish
   Scope: body.theme-chat only
   Date: 2026-05-11
   Notes: visual-only patch, no interaction changes
   ========================================================= */

body.theme-chat .modal {
    background:
        radial-gradient(circle at 50% 18%, rgba(37, 99, 235, 0.16), transparent 34%),
        rgba(15, 23, 42, 0.46);
    backdrop-filter: blur(12px) saturate(120%);
    -webkit-backdrop-filter: blur(12px) saturate(120%);
    padding: 24px;
}

body.theme-chat .modal-content {
    width: min(92vw, 560px);
    max-height: 88vh;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.68);
    border-radius: 26px;
    background:
        linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(239, 249, 255, 0.86) 52%, rgba(240, 253, 250, 0.82)),
        rgba(255, 255, 255, 0.9);
    box-shadow:
        0 28px 80px rgba(15, 23, 42, 0.18),
        0 8px 24px rgba(37, 99, 235, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.86);
}

body.theme-chat .modal-header {
    position: sticky;
    top: 0;
    z-index: 3;
    padding: 18px 22px 16px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.24);
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(16px) saturate(130%);
    -webkit-backdrop-filter: blur(16px) saturate(130%);
}

body.theme-chat .modal-header h2 {
    color: #0f172a;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0;
}

body.theme-chat .modal-header .kb-header-stats {
    color: #64748b;
}

body.theme-chat .btn-close {
    width: 36px;
    height: 36px;
    border: 1px solid rgba(148, 163, 184, 0.24);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.66);
    color: #64748b;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}

body.theme-chat .btn-close:hover {
    border-color: rgba(37, 99, 235, 0.28);
    background: rgba(239, 246, 255, 0.95);
    color: #1d4ed8;
    transform: translateY(-1px);
}

body.theme-chat .modal-body {
    padding: 22px;
    background: linear-gradient(180deg, rgba(248, 250, 252, 0.2), rgba(240, 249, 255, 0.34));
    scrollbar-color: rgba(37, 99, 235, 0.34) rgba(226, 232, 240, 0.42);
    scrollbar-width: thin;
}

body.theme-chat .modal-body::-webkit-scrollbar,
body.theme-chat .kb-list::-webkit-scrollbar,
body.theme-chat .kb-sidebar::-webkit-scrollbar,
body.theme-chat .kb-sources-panel::-webkit-scrollbar,
body.theme-chat .chunks-list::-webkit-scrollbar,
body.theme-chat .diagnose-container::-webkit-scrollbar {
    width: 9px;
    height: 9px;
}

body.theme-chat .modal-body::-webkit-scrollbar-track,
body.theme-chat .kb-list::-webkit-scrollbar-track,
body.theme-chat .kb-sidebar::-webkit-scrollbar-track,
body.theme-chat .kb-sources-panel::-webkit-scrollbar-track,
body.theme-chat .chunks-list::-webkit-scrollbar-track,
body.theme-chat .diagnose-container::-webkit-scrollbar-track {
    background: rgba(226, 232, 240, 0.36);
    border-radius: 999px;
}

body.theme-chat .modal-body::-webkit-scrollbar-thumb,
body.theme-chat .kb-list::-webkit-scrollbar-thumb,
body.theme-chat .kb-sidebar::-webkit-scrollbar-thumb,
body.theme-chat .kb-sources-panel::-webkit-scrollbar-thumb,
body.theme-chat .chunks-list::-webkit-scrollbar-thumb,
body.theme-chat .diagnose-container::-webkit-scrollbar-thumb {
    border: 2px solid rgba(255, 255, 255, 0.72);
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.42), rgba(16, 185, 129, 0.36));
}

body.theme-chat .modal-footer {
    position: sticky;
    bottom: 0;
    z-index: 3;
    gap: 10px;
    padding: 16px 22px 18px;
    border-top: 1px solid rgba(148, 163, 184, 0.24);
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(16px) saturate(130%);
    -webkit-backdrop-filter: blur(16px) saturate(130%);
}

body.theme-chat .modal .config-section,
body.theme-chat .modal .diagnose-section,
body.theme-chat .modal .component-card,
body.theme-chat .modal .forgetting-card,
body.theme-chat .modal .stats-card,
body.theme-chat .modal .chunk-item,
body.theme-chat .modal .kb-item,
body.theme-chat .modal .kb-row {
    border: 1px solid rgba(148, 163, 184, 0.24);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.76);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.07);
}

body.theme-chat .modal .config-section {
    padding: 16px;
}

body.theme-chat .modal .config-section h3,
body.theme-chat .modal .diagnose-section h3 {
    color: #172554;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: none;
}

body.theme-chat .modal .form-item label {
    color: #475569;
    font-weight: 600;
}

body.theme-chat .modal input,
body.theme-chat .modal textarea,
body.theme-chat .modal select {
    border: 1px solid rgba(148, 163, 184, 0.34);
    border-radius: 13px;
    background: rgba(255, 255, 255, 0.84);
    color: #0f172a;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
    transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

body.theme-chat .modal input:focus,
body.theme-chat .modal textarea:focus,
body.theme-chat .modal select:focus {
    outline: none;
    border-color: rgba(37, 99, 235, 0.62);
    background: rgba(255, 255, 255, 0.96);
    box-shadow:
        0 0 0 4px rgba(37, 99, 235, 0.12),
        0 10px 26px rgba(37, 99, 235, 0.08);
}

body.theme-chat .modal button,
body.theme-chat .modal .btn,
body.theme-chat .modal .btn-small,
body.theme-chat .modal .btn-page,
body.theme-chat .modal .btn-rag {
    border-radius: 12px;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

body.theme-chat .modal button:hover:not(:disabled),
body.theme-chat .modal .btn:hover:not(:disabled),
body.theme-chat .modal .btn-small:hover:not(:disabled),
body.theme-chat .modal .btn-page:hover:not(:disabled),
body.theme-chat .modal .btn-rag:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.1);
}

body.theme-chat .modal .btn-primary,
body.theme-chat .modal .btn-rag {
    border: 0;
    background: linear-gradient(135deg, #2563eb, #10a37f);
    color: #ffffff;
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.22);
}

body.theme-chat .modal .btn-secondary,
body.theme-chat .modal .btn-page,
body.theme-chat .modal .btn-small {
    border: 1px solid rgba(148, 163, 184, 0.28);
    background: rgba(255, 255, 255, 0.76);
    color: #334155;
}

body.theme-chat #settings-modal .modal-content,
body.theme-chat #rag-help-modal .modal-content {
    width: min(92vw, 640px);
}

body.theme-chat #settings-modal .diagnose-toolbar.compact {
    padding: 12px;
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 16px;
    background: rgba(248, 250, 252, 0.68);
}

body.theme-chat #params-modal .modal-content {
    width: min(94vw, 960px);
    max-width: 960px;
}

body.theme-chat #params-modal .modal-body {
    gap: 18px;
}

body.theme-chat #params-modal .config-section {
    display: grid;
    gap: 12px;
    padding: 18px;
}

body.theme-chat #params-modal .rag-retrieval-settings,
body.theme-chat #params-modal .retrieval-block,
body.theme-chat #params-modal .ablation-panel,
body.theme-chat #params-modal .forgetting-card {
    border: 1px solid rgba(37, 99, 235, 0.14);
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(239, 246, 255, 0.74), rgba(236, 253, 245, 0.62));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

body.theme-chat #kb-modal .modal-content {
    width: min(96vw, 960px);
    max-width: 960px;
    height: min(88vh, 820px);
}

body.theme-chat #kb-modal .modal-body {
    padding: 0;
}

body.theme-chat #kb-modal .kb-container {
    gap: 0;
    background: rgba(255, 255, 255, 0.32);
}

body.theme-chat #kb-modal .kb-sidebar {
    width: 190px;
    border-right: 1px solid rgba(148, 163, 184, 0.22);
    background: rgba(248, 250, 252, 0.66);
}

body.theme-chat #kb-modal .kb-sidebar h3 {
    color: #475569;
    letter-spacing: 0;
}

body.theme-chat #kb-modal .stat-item,
body.theme-chat #kb-modal .source-item {
    border-radius: 12px;
}

body.theme-chat #kb-modal .stat-item.active {
    background: linear-gradient(135deg, #2563eb, #10a37f);
}

body.theme-chat #kb-modal .kb-toolbar {
    margin: 14px;
    padding: 12px;
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.76);
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.06);
}

body.theme-chat #kb-modal .kb-list-container {
    padding: 0 14px 14px;
}

body.theme-chat #kb-modal .kb-list-header {
    margin-bottom: 8px;
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 14px;
    background: rgba(241, 245, 249, 0.72);
}

body.theme-chat #kb-modal .kb-list {
    padding: 0 4px 4px;
}

body.theme-chat #kb-modal .kb-row {
    margin-bottom: 10px;
    border-bottom: 0;
    align-items: stretch;
}

body.theme-chat #kb-modal .kb-row:hover {
    background: rgba(239, 246, 255, 0.78);
    border-color: rgba(37, 99, 235, 0.22);
}

body.theme-chat #kb-modal .kb-col-index,
body.theme-chat #kb-modal .kb-col-source,
body.theme-chat #kb-modal .chunk-meta {
    color: #64748b;
}

body.theme-chat #kb-modal .kb-text-preview,
body.theme-chat #kb-modal .kb-text-full,
body.theme-chat .chunk-text {
    line-height: 1.62;
}

body.theme-chat #kb-modal .kb-text-full {
    border: 1px solid rgba(148, 163, 184, 0.2);
    background: rgba(248, 250, 252, 0.82);
}

body.theme-chat #kb-modal .kb-pagination {
    border-top: 1px solid rgba(148, 163, 184, 0.22);
    background: rgba(255, 255, 255, 0.66);
}

body.theme-chat #diagnose-modal .modal-content {
    width: min(94vw, 920px);
}

body.theme-chat #diagnose-modal .diagnose-container {
    max-height: none;
}

body.theme-chat #diagnose-modal .diagnose-toolbar {
    position: sticky;
    top: 0;
    z-index: 2;
    padding: 12px;
    margin-bottom: 18px;
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.76);
    box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

body.theme-chat #diagnose-modal .diagnose-section {
    padding: 18px;
}

body.theme-chat #diagnose-modal .diagnose-item {
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-left-width: 4px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.74);
}

body.theme-chat #diagnose-modal .arpm-tabs,
body.theme-chat #diagnose-modal .delete-tabs {
    gap: 4px;
    padding: 4px;
    border: 1px solid rgba(148, 163, 184, 0.24);
    border-radius: 14px;
    background: rgba(241, 245, 249, 0.78);
}

body.theme-chat #diagnose-modal .arpm-tab,
body.theme-chat #diagnose-modal .delete-tab {
    border-radius: 10px;
    color: #475569;
}

body.theme-chat #diagnose-modal .arpm-tab.active,
body.theme-chat #diagnose-modal .delete-tab.active {
    background: linear-gradient(135deg, #2563eb, #10a37f);
    color: #ffffff;
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.18);
}

body.theme-chat .chunks-list {
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 16px;
    background: rgba(248, 250, 252, 0.56);
}

body.theme-chat .chunk-header code,
body.theme-chat .config-item code,
body.theme-chat .formula,
body.theme-chat .chunk-source,
body.theme-chat .chunk-role,
body.theme-chat .status-badge {
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 999px;
    background: rgba(241, 245, 249, 0.82);
}

body.theme-chat #rag-help-modal .modal-body {
    line-height: 1.7;
}

.mobile-action-bar,
.mobile-display-menu,
.mobile-panel-close {
    display: none;
}

@media (max-width: 768px) {
    html,
    body {
        height: 100%;
        overflow: hidden;
    }

    .app {
        height: 100dvh;
        flex-direction: column;
        min-width: 0;
    }

    .sidebar {
        display: none;
    }

    .mobile-action-bar {
        display: grid;
        grid-template-columns: repeat(6, minmax(0, 1fr));
        gap: 6px;
        padding: 8px;
        background: var(--bg-sidebar);
        border-bottom: 1px solid var(--border-color);
        flex-shrink: 0;
        z-index: 8;
        position: relative;
    }

    .mobile-action-btn {
        min-width: 0;
        height: 44px;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        background: var(--bg-primary);
        color: var(--text-primary);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        cursor: pointer;
        font: inherit;
        line-height: 1.1;
    }

    .mobile-action-btn:active {
        background: var(--bg-hover);
    }

    .mobile-action-btn.active {
        background: var(--bg-hover);
        border-color: var(--text-secondary);
    }

    .mobile-action-btn span {
        font-size: 15px;
        height: 16px;
        line-height: 16px;
    }

    .mobile-action-btn strong {
        font-size: 10px;
        font-weight: 600;
        white-space: nowrap;
    }

    .mobile-display-menu.show {
        position: absolute;
        top: calc(100% + 6px);
        right: 8px;
        z-index: 20;
        width: min(280px, calc(100vw - 16px));
        display: grid;
        gap: 10px;
        padding: 12px;
        background: var(--bg-primary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
    }

    .mobile-display-menu label {
        display: grid;
        gap: 5px;
        font-size: 12px;
        color: var(--text-secondary);
    }

    .mobile-display-menu select,
    .mobile-menu-command {
        width: 100%;
        min-height: 36px;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        background: var(--bg-primary);
        color: var(--text-primary);
        font: inherit;
        padding: 0 10px;
    }

    .mobile-menu-command {
        cursor: pointer;
        text-align: center;
    }

    .main {
        width: 100%;
        min-height: 0;
        flex: 1;
        border-right: 0;
    }

    .header {
        height: auto;
        min-height: 0;
        padding: 8px;
        display: grid;
        grid-template-columns: 1fr;
        grid-template-rows: auto auto;
        gap: 6px;
        flex-shrink: 0;
    }

    .session-meta,
    .status-strip,
    .top-actions {
        grid-column: 1;
        grid-row: auto;
        justify-self: stretch;
        width: 100%;
        min-width: 0;
    }

    .session-meta,
    .status-strip {
        height: auto;
        min-height: 32px;
        overflow-x: auto;
        justify-content: flex-start;
        padding: 6px 8px;
        scrollbar-width: none;
    }

    .session-meta::-webkit-scrollbar,
    .status-strip::-webkit-scrollbar {
        display: none;
    }

    .top-actions {
        display: none;
    }

    .theme-switch,
    .language-switch {
        width: 100%;
        min-width: 0;
    }

    .btn-export-current {
        width: 100%;
        height: 34px;
    }

    .chat-container {
        padding: 12px 0;
        min-height: 0;
    }

    .welcome {
        padding: 36px 18px;
    }

    .welcome h1 {
        font-size: 28px;
    }

    .welcome-actions {
        flex-direction: column;
        align-items: stretch;
        width: min(100%, 320px);
        margin-left: auto;
        margin-right: auto;
    }

    .input-container {
        padding: 10px 10px 12px;
        flex-shrink: 0;
    }

    .input-wrapper {
        max-width: none;
    }

    .input-footer {
        max-width: none;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 2px;
        scrollbar-width: none;
    }

    .input-footer::-webkit-scrollbar {
        display: none;
    }

    .btn-clear-chat {
        white-space: nowrap;
        flex-shrink: 0;
    }

    body.mobile-rag-open .info-panel,
    body.mobile-cot-open .info-panel {
        position: fixed;
        inset: 0;
        z-index: 1000;
        width: auto;
        height: auto;
        display: flex;
        align-items: flex-start;
        justify-content: center;
        padding: 12px;
        background: rgba(0, 0, 0, 0.5);
        border-left: 0;
    }

    body.mobile-rag-open .info-panel .panel-section,
    body.mobile-cot-open .info-panel .panel-section {
        display: none;
    }

    body.mobile-rag-open .info-panel .panel-retrieval,
    body.mobile-cot-open .info-panel .panel-cot {
        display: flex;
        width: calc(100vw - 24px);
        max-width: calc(100vw - 24px);
        height: min(86vh, 760px);
        margin-top: env(safe-area-inset-top);
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
        overflow: hidden;
    }

    body.mobile-rag-open .info-panel .panel-header,
    body.mobile-cot-open .info-panel .panel-header {
        min-height: 48px;
        padding: 12px 14px;
        background: var(--bg-primary);
    }

    body.mobile-rag-open .info-panel .panel-content,
    body.mobile-cot-open .info-panel .panel-content {
        padding: 12px;
        min-height: 0;
    }

    .mobile-panel-close {
        display: inline-flex;
        width: 30px;
        height: 30px;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        background: var(--bg-primary);
        color: var(--text-secondary);
        font-size: 20px;
        line-height: 1;
        cursor: pointer;
    }

    .modal {
        padding: 10px;
        align-items: flex-start;
    }

    .modal-content,
    .modal-large {
        width: calc(100vw - 20px);
        max-width: calc(100vw - 20px);
        max-height: 90dvh;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding-left: 14px;
        padding-right: 14px;
    }
}

@media (max-width: 768px) {
    body.theme-chat .modal {
        padding: 12px;
        align-items: flex-start;
    }

    body.theme-chat .modal-content,
    body.theme-chat #settings-modal .modal-content,
    body.theme-chat #params-modal .modal-content,
    body.theme-chat #kb-modal .modal-content,
    body.theme-chat #diagnose-modal .modal-content,
    body.theme-chat #rag-help-modal .modal-content {
        width: calc(100vw - 24px);
        max-width: calc(100vw - 24px);
        max-height: 88vh;
        border-radius: 22px;
    }

    body.theme-chat .modal-header,
    body.theme-chat .modal-body,
    body.theme-chat .modal-footer {
        padding-left: 16px;
        padding-right: 16px;
    }

    body.theme-chat #kb-modal .kb-toolbar,
    body.theme-chat #diagnose-modal .diagnose-toolbar {
        align-items: stretch;
        flex-direction: column;
    }

    body.theme-chat #kb-modal .kb-search-box,
    body.theme-chat #kb-modal .kb-toolbar-actions {
        width: 100%;
        flex-direction: column;
    }

    body.theme-chat #kb-modal .kb-list-container {
        padding: 0 10px 10px;
    }

    body.theme-chat #kb-modal .kb-row {
        grid-template-columns: 40px 1fr 84px;
        padding: 12px;
    }
}