:root {
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --gray-50: #f9fafb;
  --gray-100: #f2f3f5;
  --gray-150: #ebedf0;
  --gray-200: #e5e7eb;
  --gray-250: #d5d8de;
  --gray-300: #c5cad1;
  --gray-350: #a9afb8;
  --gray-400: #9ca3af;
  --gray-500: #6e7480;
  --gray-700: #424851;
  --gray-800: #2f343b;
  --gray-900: #1d1f24;
  --green-50: #f0fdf4;
  --green-600: #16a34a;
  --orange-50: #fff7ed;
  --orange-600: #ea580c;
  --red-50: #fef2f2;
  --red-600: #dc2626;
  --white-1000: #ffffff;
  --black-10: rgba(0, 0, 0, 0.1);

  --color-bg-page: var(--gray-50);
  --color-bg-surface: var(--white-1000);
  --color-bg-surface-raised: var(--white-1000);
  --color-bg-sidebar: var(--gray-100);
  --color-bg-hover: var(--gray-200);
  --color-bg-muted: var(--gray-200);
  --color-brand-primary: var(--blue-600);
  --color-brand-primary-hover: var(--blue-700);
  --color-brand-primary-subtle: var(--blue-50);
  --color-text-primary: var(--gray-900);
  --color-text-secondary: var(--gray-500);
  --color-text-placeholder: var(--gray-350);
  --color-text-disabled: var(--gray-350);
  --color-text-body: var(--gray-500);
  --color-text-brand: var(--blue-700);
  --color-text-link: var(--blue-600);
  --color-text-emphasis: var(--gray-800);
  --color-status-error: var(--red-600);
  --color-status-error-bg: var(--red-50);
  --color-status-success: var(--green-600);
  --color-status-success-bg: var(--green-50);
  --color-status-paused: var(--orange-600);
  --color-status-paused-bg: var(--orange-50);
  --color-border-default: var(--gray-250);
  --color-border-strong: var(--gray-350);
  --color-border-subtle: var(--gray-100);
  --color-scrollbar-thumb: var(--gray-200);
  --color-scrollbar-thumb-hover: var(--gray-250);

  --font-family-sans:
    "PingFang SC", "Microsoft YaHei", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-family-display: "DingTalk JinBuTi", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-sans: var(--font-family-sans);
  --font-display: var(--font-family-display);
  --font-family-mono:
    ui-monospace, SFMono-Regular, "SF Mono", "Fira Code", Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;

  --font-size-sm: 12px;
  --font-size-md: 14px;
  --font-size-md-plus: 15px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-3xl: 20px;
  --radius-full: 9999px;
  --size-sidebar-width: 280px;
  --border-width-default: 1px;
  --transition: all 0.2s ease;
  --shadow-surface-sm: 0 8px 24px color-mix(in srgb, var(--black-10) 42%, transparent);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-width: 320px;
  height: 100%;
  min-height: 100vh;
  margin: 0;
  background: var(--color-bg-page);
  color: var(--color-text-primary);
  font-family: var(--font-family-sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

button,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: default;
}

[hidden] {
  display: none !important;
}

.hidden {
  display: none !important;
}

.app-layout {
  display: grid;
  grid-template-columns: var(--size-sidebar-width) minmax(0, 1fr);
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: var(--color-bg-page);
}

.sidebar {
  width: var(--size-sidebar-width);
  min-width: 240px;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.nexbot-sidebar {
  border-right: var(--border-width-default) solid var(--color-border-default);
  background: var(--color-bg-sidebar);
  box-shadow: none;
}

.sidebar-header {
  padding: 12px 12px 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-mark__img {
  display: block;
  width: 42px;
  height: 42px;
}

.sidebar-title {
  color: var(--color-text-primary);
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1;
  font-weight: 500;
  white-space: nowrap;
}

.sidebar-toggle {
  width: 30px;
  height: 30px;
  border: 0;
  padding: 0;
  border-radius: 24px;
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background-color 0.18s ease;
}

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

.sidebar-toggle__icon {
  display: block;
  width: 30px;
  height: 30px;
}

.sidebar-panel {
  padding: 4px 12px 0;
  display: flex;
  flex-direction: column;
}

.sidebar-panel--top {
  flex: 0 0 auto;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 36px;
  padding: 8px 12px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--color-text-primary);
  font-size: 14px;
  text-align: left;
  transition: var(--transition);
}

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

.nav-item.active,
.nav-item[aria-current="page"] {
  background: var(--color-bg-surface);
  box-shadow: 0 1px 3px color-mix(in srgb, var(--black-10) 40%, transparent);
}

.nav-item.active .nav-label,
.nav-item[aria-current="page"] .nav-label {
  font-weight: 600;
}

.nav-icon-stack {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nav-icon-img {
  position: absolute;
  inset: 0;
  width: 16px;
  height: 16px;
  transition: opacity 0.2s ease;
}

.nav-icon-img--active {
  opacity: 0;
}

.nav-item.active .nav-icon-img--default,
.nav-item[aria-current="page"] .nav-icon-img--default {
  opacity: 0;
}

.nav-item.active .nav-icon-img--active,
.nav-item[aria-current="page"] .nav-icon-img--active {
  opacity: 1;
}

.nav-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}

.nav-label {
  color: var(--color-text-primary);
  font-size: 0.875rem;
  font-weight: 400;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-history {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 8px 12px 0;
}

.sidebar-history__sep {
  width: 100%;
  height: 0.6px;
  background: var(--color-border-default);
  margin: 6px 0 8px;
}

.sidebar-history__toolbar {
  position: relative;
  height: 44px;
  flex-shrink: 0;
}

.sidebar-history__head {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 8px 8px;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
}

.sidebar-history__title {
  color: var(--color-text-secondary);
  font-size: 13px;
  line-height: 20px;
  flex: 1;
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.sidebar-history__list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 8px;
}

.history-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 32px;
  padding: 0 8px 0 12px;
  border-radius: 8px;
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

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

.history-item.active {
  background: var(--color-bg-surface);
  border: none;
  box-shadow: none;
}

.history-item.active .history-item__title {
  font-weight: 600;
}

.history-item__bullet {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-text-secondary) 70%, var(--color-bg-surface)),
    color-mix(in srgb, var(--color-text-body) 80%, var(--color-bg-surface))
  );
}

.history-item__title {
  flex: 1;
  min-width: 0;
  color: var(--color-text-primary);
  font-size: 14px;
  font-weight: 400;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding-right: 6px;
}

.sidebar-history__empty {
  padding: 10px 12px;
  color: var(--color-text-secondary);
  font-size: 13px;
}

.sidebar-footer {
  padding: 10px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid color-mix(in srgb, var(--color-border-default) 92%, transparent);
  margin-top: auto;
}

.user-pill {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  padding: 3px 12px 3px 3px;
  border-radius: 300px;
  background: color-mix(in srgb, var(--color-bg-surface) 50%, transparent);
  transition: var(--transition);
}

.user-pill:hover {
  background: var(--color-bg-hover);
}

.user-pill-avatar {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-brand-primary-subtle) 84%, var(--color-bg-surface)),
    color-mix(in srgb, var(--color-brand-primary) 14%, var(--color-bg-surface))
  );
  border: 0.9px solid var(--color-bg-surface);
  color: var(--color-text-brand);
  font-size: 0.92rem;
  font-weight: 600;
  overflow: hidden;
}

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

.user-pill-name {
  flex: 1;
  min-width: 0;
  color: var(--color-text-primary);
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-pill-chevron {
  flex-shrink: 0;
  color: var(--color-text-placeholder);
}

.chat-layout {
  min-width: 0;
  min-height: 0;
  display: flex;
  background: var(--color-bg-page);
}

.chat-window {
  position: relative;
  flex: 1;
  min-width: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: transparent;
}

.chat-window--active {
  background: var(--color-bg-surface);
}

.chat-window--preview-open .chat-top-actions {
  right: 478px;
}

.chat-top-actions {
  position: absolute;
  top: 12px;
  right: 18px;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.login-entry {
  height: 32px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  border: 1px solid var(--color-border-default);
  border-radius: 8px;
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  font-size: 13px;
  line-height: 1;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--black-10) 30%, transparent);
  transition: var(--transition);
}

.login-entry:hover:not(:disabled) {
  border-color: var(--color-border-strong);
  background: var(--color-bg-hover);
}

.login-entry:disabled {
  opacity: 0.5;
}

.chat-expert-strip {
  min-width: 0;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}

.chat-expert-strip::-webkit-scrollbar {
  display: none;
}

.chat-expert-tile {
  min-width: 0;
  height: 32px;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 2px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-primary);
  font-family: var(--font-family-sans);
  font-size: 14px;
  line-height: 1;
  white-space: nowrap;
  transition: var(--transition);
}

.chat-expert-tile:hover:not(:disabled),
.chat-expert-tile--active {
  background: var(--color-bg-hover);
  color: var(--color-brand-primary);
}

.chat-expert-tile:disabled {
  opacity: 0.58;
  cursor: not-allowed;
}

.chat-expert-tile--assistant {
  color: var(--color-text-body);
}

.chat-expert-tile--assistant:hover:not(:disabled) {
  color: var(--color-text-primary);
}

.chat-expert-tile--assistant .chat-expert-tile__avatar {
  width: 16px;
  height: 16px;
  border-radius: 0;
  background: transparent;
  color: inherit;
}

.chat-expert-tile__avatar {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: var(--radius-full);
  background: var(--color-bg-page);
  color: var(--color-text-primary);
  font-size: 11px;
  font-weight: 700;
}

.chat-expert-tile__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.chat-expert-tile__name {
  min-width: 0;
  max-width: 148px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-expert-avatar--initial {
  background: var(--color-bg-muted);
}

.chat-header {
  flex-shrink: 0;
  height: 54px;
  width: 100%;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border-subtle);
  z-index: 2;
}

.chat-header__left {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 0;
}

.chat-header__title-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  max-width: 480px;
  padding: 4px 8px;
  border: none;
  border-radius: 8px;
  background: transparent;
  transition: var(--transition);
}

.chat-header__title-btn:hover {
  background: var(--color-bg-hover);
}

.chat-header__title-text {
  color: var(--color-text-primary);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.messages-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.messages-container {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 8px 24px 12px;
  background: transparent;
}

.chat-welcome {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 0 32px;
  text-align: center;
}

.chat-welcome__agent-avatar {
  width: 100px;
  height: 100px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 50%;
}

.chat-welcome__agent-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.chat-welcome__copy h2 {
  margin: 0;
  color: var(--color-text-primary);
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.35rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0;
}

.chat-welcome__copy p {
  margin-top: 8px;
  margin-left: auto;
  margin-right: auto;
  max-width: 720px;
  color: var(--color-text-body);
  font-size: 15px;
  line-height: 1.8;
  text-align: center;
  text-indent: 0;
  letter-spacing: 0.01em;
  white-space: pre-line;
}

.chat-welcome__suggestions {
 /* display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 6px;*/
  margin-top: 24px;
  padding: 0 24px;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}


.chat-suggestion-item {
  display: flex;
  justify-content: center;
  gap:0 6px;
}

.chat-suggestion-item + .chat-suggestion-item {
   margin-top: 8px;
}



.chat-suggestion-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
/*  width: 100%;*/
  height: 40px;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  color: var(--color-text-primary);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.chat-suggestion-chip__text {
  display: block;
  min-width: 0;
  max-width: 100%;
  height: 40px;
  padding: 0 16px;
  border: 1px solid var(--color-border-default);
  border-radius: 12px;
  background: var(--gray-100);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
  line-height: 38px;
  transition: var(--transition);
}

.chat-suggestion-chip:hover .chat-suggestion-chip__text {
  border-color: var(--color-border-strong);
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.tool-shortcut-bar {
  flex-shrink: 0;
  width: 100%;
  padding: 10px 24px 12px;
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border-subtle);
}

.tool-shortcut-bar.hidden {
  display: none;
}


.markdown-content {
  line-height: 1.7;
  word-break: break-word;
  color: inherit;
}

.markdown-content p {
  margin: 4px 0;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5 {
  margin: 14px 0 6px;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.4;
}

.markdown-content h1 {
  font-size: var(--font-size-3xl);
}

.markdown-content h2 {
  font-size: var(--font-size-2xl);
}

.markdown-content h3 {
  font-size: var(--font-size-xl);
}

.markdown-content h4,
.markdown-content h5 {
  font-size: var(--font-size-lg);
}

.markdown-content hr {
  border: none;
  height: 0.5px;
  background: var(--color-border-default);
  margin: 20px 0;
}

.markdown-content strong {
  font-weight: 700;
  color: var(--color-text-primary);
}

.markdown-content em {
  font-style: italic;
  color: var(--color-text-body);
}

.markdown-content pre {
  background: var(--color-bg-page);
  border: 1px solid var(--color-border-default);
  color: var(--color-text-emphasis);
  padding: 16px;
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin: 12px 0;
  font-size: 13px;
  line-height: 1.55;
}

.markdown-content code {
  font-family: var(--font-family-mono);
  font-size: 0.9em;
}

.markdown-content :not(pre) > code {
  background: var(--color-brand-primary-subtle);
  color: var(--color-text-brand);
  padding: 2px 6px;
  border-radius: 6px;
}

.markdown-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.markdown-content a {
  color: var(--color-text-link);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-all;
  transition: var(--transition);
}

.markdown-content a:hover {
  color: var(--color-text-brand);
  text-decoration-thickness: 2px;
}

.markdown-content ul,
.markdown-content ol {
  padding-left: 20px;
  margin: 8px 0;
}

.markdown-content li {
  margin: 4px 0;
}

.markdown-content table {
  border-collapse: collapse;
  margin: 10px 0;
  font-size: 0.9em;
  width: auto;
  max-width: 100%;
}

.markdown-content th,
.markdown-content td {
  border: 1px solid var(--color-border-default);
  padding: 6px 10px;
  text-align: left;
}

.markdown-content thead th {
  background: var(--color-bg-sidebar);
  font-weight: 700;
  color: var(--color-text-primary);
}

.markdown-content tbody tr:nth-child(even) {
  background: var(--color-bg-page);
}

.markdown-content blockquote {
  margin: 8px 0;
  padding: 4px 12px;
  border-left: 3px solid var(--color-border-default);
  color: var(--color-text-secondary);
}

.user-chat-text-card .markdown-content,
.user-chat-bubble--assistant .markdown-content {
  font-size: var(--font-size-md-plus);
  line-height: 26px;
}

.user-chat-bubble--assistant .markdown-content :is(h1, h2) {
  margin: 0 0 20px;
  font-size: 21px;
  font-weight: 700;
  line-height: 28px;
}

.user-chat-bubble--assistant .markdown-content :is(h3, h4, h5) {
  margin: 14px 0 6px;
  font-size: 17px;
  line-height: 26px;
}

.user-chat-bubble--assistant .markdown-content p {
  margin: 0 0 14px;
  font-size: var(--font-size-md-plus);
  line-height: 26px;
  color: var(--color-text-primary);
}

.user-chat-bubble--assistant .markdown-content p:last-child {
  margin-bottom: 0;
}

.user-chat-bubble--assistant .markdown-content ul,
.user-chat-bubble--assistant .markdown-content ol {
  margin: 0 0 14px;
  padding-left: 18px;
}

.user-chat-bubble--assistant .markdown-content li {
  margin: 0 0 8px;
  line-height: 26px;
}

.user-chat-bubble--assistant .markdown-content pre {
  margin: 10px 0 0;
}

.user-chat-bubble--assistant .markdown-content hr {
  margin: 24px 0;
}

.user-chat-row {
  display: flex;
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 8px 8px 10px;
}

.user-chat-row--tx {
  flex-direction: row-reverse;
}

.user-chat-content {
  flex: 1;
  min-width: 0;
}

.user-chat-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
  font-size: 12px;
  line-height: 18px;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.user-chat-content:hover .user-chat-meta,
.user-chat-meta--visible {
  opacity: 1;
}

.user-chat-meta--tx {
  justify-content: flex-end;
}

.user-chat-role {
  color: var(--color-text-primary);
  font-weight: 500;
}

.user-chat-streaming-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: var(--color-text-secondary);
}

.user-chat-streaming-status__spinner {
  width: 12px;
  height: 12px;
  border: 2px solid color-mix(in srgb, var(--color-text-secondary) 32%, transparent);
  border-top-color: var(--color-brand-primary);
  border-radius: 50%;
  flex-shrink: 0;
  animation: spin 1s linear infinite;
}

.user-chat-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.user-chat-bubble {
  width: fit-content;
  max-width: min(780px, 100%);
  box-sizing: border-box;
  overflow-wrap: anywhere;
}

.user-chat-bubble--assistant {
  width: 100%;
  max-width: 100%;
  color: var(--color-text-primary);
}

.user-chat-bubble--user {
  margin-left: auto;
  padding: 12px 16px;
  border-radius: 16px 0 16px 16px;
  background: var(--color-brand-primary-subtle);
  color: var(--color-text-primary);
}

.user-chat-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: min(780px, 100%);
}

.user-chat-row--tx .user-chat-attachments {
  justify-content: flex-end;
  margin-left: auto;
}

.user-chat-attachment {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  max-width: 100%;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  font-size: 13px;
}

.user-chat-attachment__name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-chat-attachment__size {
  flex-shrink: 0;
  color: var(--color-text-secondary);
  font-size: 12px;
}

.user-chat-section-divider {
  width: 100%;
  height: 1px;
  margin: 12px 0;
  background: var(--color-border-subtle);
}

.user-turn-user {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

.user-turn-attachments {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.file-card {
  display: flex;
  align-items: center;
  gap: 10px;
  border-radius: 16px;
  position: relative;
}

.file-card--composer {
  padding: 10px 12px;
  background: var(--color-bg-sidebar);
  max-width: 260px;
}

.file-card--message {
  padding: 12px;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  max-width: min(360px, 100%);
  gap: 8px;
  transition: var(--transition);
}

.file-card--message:hover {
  background: var(--color-bg-page);
  border-color: var(--color-border-strong);
}

.file-type-icon {
  width: 40px;
  height: 40px;
  display: inline-block;
  flex-shrink: 0;
  object-fit: contain;
}

.file-card__thumb {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-bg-muted);
}

.file-card__preview {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  border-radius: 10px;
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.file-card__preview:hover {
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-brand-primary) 34%, transparent);
}

.file-card__preview .file-card__thumb {
  display: block;
}

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

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

.file-card__name {
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-card__meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.file-card__remove {
  width: 20px;
  height: 20px;
  border: none;
  border-radius: 50%;
  background: var(--color-bg-hover);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition);
  padding: 0;
  opacity: 0;
}

.file-card--composer:hover .file-card__remove {
  opacity: 1;
}

.file-card__remove:hover {
  background: var(--color-status-error-bg);
  color: var(--color-status-error);
}

.file-card__download {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  padding: 0;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  cursor: pointer;
  text-decoration: none;
  opacity: 0;
  transition: var(--transition);
}

.file-card--message:hover .file-card__download {
  opacity: 1;
}

.file-card__download:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.file-card__download.is-loading {
  opacity: 1;
  pointer-events: none;
  color: var(--color-brand-primary);
}

.image-preview-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  width: min(460px, 44vw);
  min-width: 380px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-left: 1px solid var(--color-border-default);
  background: var(--color-bg-page);
  box-shadow: -12px 0 32px color-mix(in srgb, var(--black-10) 54%, transparent);
}

.image-preview-panel__header {
  height: 54px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px 0 20px;
  border-bottom: 0.5px solid var(--color-border-default);
  background: var(--color-bg-surface);
}

.image-preview-panel__title {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  color: var(--color-text-primary);
  font-size: 18px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.image-preview-panel__actions {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.image-preview-panel__btn {
  width: 30px;
  height: 30px;
  padding: 0;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-body);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.image-preview-panel__btn:hover:not(:disabled) {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.image-preview-panel__btn:disabled {
  color: var(--color-text-disabled);
}

.image-preview-panel__body {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow: auto;
}

.image-preview-panel__image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-lg);
  background: var(--color-bg-surface);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--black-10) 40%, transparent);
}

.image-preview-panel__state {
  max-width: 320px;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.7;
  text-align: center;
}

.image-preview-panel__state--error {
  color: var(--color-status-error);
}

.user-chat-bubble--streaming::after {
  content: "▍";
  color: var(--color-brand-primary);
  font-weight: 300;
  margin-left: 1px;
  animation: userChatStreamCaret 0.9s step-end infinite;
}

.assistant-block-with-prompt {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.user-process-collapse {
  width: 100%;
}

.user-process-collapse__summary {
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 24px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.user-process-collapse__summary::-webkit-details-marker {
  display: none;
}

.user-process-collapse__title {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 20px;
  font-weight: 400;
}

.user-process-collapse__chevron {
  flex-shrink: 0;
  color: var(--color-text-primary);
  transition: transform 0.18s ease;
}

.user-process-collapse[open] .user-process-collapse__chevron {
  transform: rotate(90deg);
}

.user-process-collapse__body-wrap {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border-default);
}

.user-process-collapse__body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.thinking-panel {
  max-width: min(780px, 100%);
  border-radius: 16px;
  padding: 10px 12px;
  background: var(--color-bg-surface-raised);
  border: 1px solid var(--color-border-default);
}

.thinking-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--color-text-secondary);
  font-size: 12px;
  line-height: 18px;
}

.thinking-panel__summary-label {
  font-weight: 600;
}

.thinking-panel__summary-count {
  color: var(--color-text-placeholder);
}

.thinking-panel__summary-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.thinking-panel__body {
  position: relative;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border-default);
}

.thinking-panel__body-inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.thinking-panel__step {
  display: flex;
  gap: 10px;
}

.thinking-panel__rail {
  width: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.thinking-panel__dot {
  width: 7px;
  height: 7px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--color-border-strong);
}

.thinking-panel__line {
  width: 1px;
  flex: 1;
  margin-top: 4px;
  background: var(--color-border-default);
}

.thinking-panel__content {
  min-width: 0;
}

.thinking-panel__content .markdown-content {
  color: var(--color-text-body);
  font-size: 13px;
  line-height: 1.7;
}

.thinking-panel__content .markdown-content > :first-child {
  margin-top: 0;
}

.thinking-panel__content .markdown-content > :last-child {
  margin-bottom: 0;
}

.thinking-panel__content .markdown-content p {
  margin: 0;
}

.thinking-panel__content .markdown-content strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.thinking-panel__content .markdown-content em {
  font-style: normal;
}

.thinking-panel__content .markdown-content code {
  font-family: var(--font-family-mono);
  font-size: 12px;
  padding: 1px 4px;
  border-radius: 6px;
  background: var(--color-bg-surface);
}

.thinking-panel__content .markdown-content ul,
.thinking-panel__content .markdown-content ol {
  margin: 0;
  padding-left: 18px;
}

.thinking-panel__content .markdown-content li + li {
  margin-top: 4px;
}

.thinking-panel__content .markdown-content pre {
  margin: 0;
  white-space: pre-wrap;
  font-size: 12px;
  line-height: 1.6;
  padding: 8px 10px;
  border-radius: 10px;
  overflow-x: auto;
  background: var(--color-bg-surface);
}

.tool-status-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tool-status-line {
  display: flex;
  margin-top: 10px;
  align-items: center;
  gap: 8px;
  min-width: 0;
  width: 100%;
  padding: 2px 0;
}

.tool-status-line__state {
  width: 12px;
  height: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tool-status-line__tool {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--color-text-primary);
  font-size: 13px;
  line-height: 20px;
}

.tool-status-line__emoji {
  font-size: 12px;
}

.tool-status-line__label {
  min-width: 0;
  color: var(--color-text-body);
  font-size: 13px;
  line-height: 20px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-status-line__state.done {
  color: var(--color-status-success);
}

.tool-status-line__state.error {
  color: var(--color-status-error);
}

.tool-status-line__state.awaiting_input {
  color: var(--color-status-paused);
}

.tool-status-line__state.cancelled {
  color: var(--color-text-secondary);
}

.spinner {
  width: 12px;
  height: 12px;
  border: 2px solid color-mix(in srgb, var(--color-text-secondary) 40%, transparent);
  border-top-color: var(--color-brand-primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

.check,
.waiting,
.cancel-icon,
.error-icon {
  font-size: 12px;
  line-height: 1;
  font-weight: 700;
}

.ui-card {
  margin: 12px 0 0;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: 18px;
  box-shadow: 0 4px 18px color-mix(in srgb, var(--color-text-secondary) 16%, transparent);
  overflow: hidden;
  max-width: min(780px, 100%);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--color-bg-sidebar);
  border-bottom: 1px solid var(--color-border-default);
  font-size: 14px;
}

.card-header strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-icon {
  flex-shrink: 0;
}

.card-type-badge {
  margin-left: auto;
  padding: 2px 8px;
  background: color-mix(in srgb, var(--color-brand-primary) 12%, transparent);
  color: var(--color-brand-primary);
  border-radius: 8px;
  font-size: 12px;
  font-family: var(--font-family-mono);
}

.card-body {
  padding: 16px;
}

.card-description {
  margin: 0 0 12px;
  color: var(--color-text-secondary);
  font-size: 13px;
  line-height: 1.55;
  white-space: pre-wrap;
}

.card-option-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 0 12px;
}

.card-option-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  min-height: 40px;
  padding: 9px 12px;
  border: 1px solid var(--color-border-default);
  border-radius: 12px;
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.card-option-item:hover,
.card-option-item.selected {
  border-color: color-mix(in srgb, var(--color-brand-primary) 45%, transparent);
  background: var(--color-brand-primary-subtle);
}

.card-option-item span,
.card-option-item small {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-option-item span {
  font-weight: 500;
}

.card-option-item small {
  color: var(--color-text-secondary);
  font-size: 12px;
}

.data-block {
  border: 1px solid var(--color-border-default);
  border-radius: 10px;
  background: var(--color-bg-sidebar);
  overflow: hidden;
}

.data-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  padding: 8px 12px;
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  font-size: 13px;
  cursor: pointer;
  text-align: left;
}

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

.data-json {
  margin: 0;
  padding: 12px;
  font-family: var(--font-family-mono);
  font-size: 12px;
  line-height: 1.45;
  color: var(--color-text-primary);
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border-default);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 320px;
  overflow: auto;
}

.form-card {
  background: var(--color-bg-page);
  border-width: 0;
  border-radius: var(--radius-xl);
}

.form-card.resolved {
  opacity: 0.75;
}

.form-card .card-header {
  background: var(--color-bg-muted);
  border-bottom-width: 0.5px;
}

.form-card-fields {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-primary);
}

.card-field__label {
  font-weight: 500;
}

.field-input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  font-size: 14px;
  transition: var(--transition);
  box-sizing: border-box;
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
}

.field-input:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--color-brand-primary) 45%, transparent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-brand-primary) 14%, transparent);
}

textarea.field-input {
  resize: vertical;
}

.field-switch {
  width: 18px;
  height: 18px;
}

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.nx-button {
  border: 1px solid transparent;
  border-radius: var(--radius-xl);
  padding: 8px 16px;
  font-size: 14px;
  line-height: 20px;
  transition: var(--transition);
}

.nx-button--primary {
  background: var(--color-brand-primary);
  color: #ffffff;
}

.nx-button--primary:hover {
  background: var(--color-brand-primary-hover);
}

.nx-button--secondary {
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border-default);
}

.nx-button--secondary:hover {
  border-color: var(--color-border-strong);
  background: var(--color-bg-hover);
}

.card-stamp {
  text-align: center;
  padding: 8px;
  font-size: 14px;
  margin-top: 12px;
}

.card-stamp.resolved {
  color: var(--color-brand-primary);
}

.card-stamp.rejected {
  color: var(--color-status-error);
}

.table-card {
  margin: 12px 0;
  background: var(--color-bg-page);
  border: 0;
  border-radius: var(--radius-xl);
  box-shadow: none;
  overflow: hidden;
}

.table-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 0.5px solid var(--color-border-default);
  background: var(--color-bg-muted);
}

.table-card__header-left {
  display: flex;
  align-items: center;
  min-width: 0;
}

.table-card__title {
  margin: 0;
  font-size: var(--font-size-md);
  line-height: 20px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.table-card__desc {
  margin-top: 2px;
  color: var(--color-text-body);
  font-size: var(--font-size-sm);
  line-height: 18px;
}

.table-card__view-toggle {
  display: flex;
  align-items: center;
  width: min(328px, 100%);
  min-height: 36px;
  padding: 4px;
  background: var(--color-bg-surface);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.table-card__view-toggle button {
  display: flex;
  flex: 1 0 0;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 0;
  height: 28px;
  padding: 4px 8px;
  border: none;
  background: transparent;
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: normal;
  white-space: nowrap;
  transition: var(--transition);
}

.table-card__view-toggle button.active {
  background: linear-gradient(270deg, #0f98ad 0%, #0891b2 100%);
  color: var(--color-bg-surface);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.table-card__view-toggle button:not(.active):hover {
  background: color-mix(in srgb, #cffafe 62%, transparent);
  color: #0e7490;
  transform: translateY(-1px);
}

.view-toggle-icon {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  color: currentColor;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1;
}

.table-card__body {
  padding: 0;
}

.table-card__table-wrap {
  overflow-x: auto;
}

.table-card table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-md);
}

.table-card th,
.table-card td {
  padding: 10px 14px;
  border-bottom: 0.5px solid var(--color-border-default);
  text-align: left;
  white-space: nowrap;
}

.table-card th {
  background: transparent;
  color: var(--color-text-primary);
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}

.table-card__th-label {
  vertical-align: middle;
}

.sort-icon {
  margin-left: 4px;
  color: var(--color-text-placeholder);
  font-size: 11px;
  vertical-align: middle;
}

.sort-icon.active {
  color: var(--color-text-link);
}

.table-card__footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 14px;
  color: var(--color-text-body);
  font-size: var(--font-size-sm);
}

.table-card__chart-view {
  padding: 16px;
}

.table-card__chart {
  width: 100%;
  height: 300px;
}

.table-card__chart-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 300px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

@media (max-width: 720px) {
  .table-card__header {
    align-items: stretch;
    flex-direction: column;
  }

  .table-card__view-toggle {
    width: 100%;
  }
}

.webpage-card {
  display: flex;
  align-items: center;
  gap: 12px;
  width: min(100%, 560px);
  padding: 10px 12px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-page);
  box-shadow: none;
  color: inherit;
  text-decoration: none;
  transition:
    border-color 120ms ease,
    background 120ms ease,
    transform 120ms ease;
}

.webpage-card__link {
  min-width: 0;
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.webpage-card:hover {
  background: var(--color-bg-icon);
  border-color: var(--color-brand-primary);
}

.webpage-card__icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-brand-primary-subtle);
  flex-shrink: 0;
}

.webpage-card__content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.webpage-card__content strong,
.webpage-card__content span,
.webpage-card__content p {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.webpage-card__content p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 13px;
}

.webpage-card__content span {
  color: var(--color-text-link);
  font-size: 12px;
}

.webpage-card__action {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  padding: 0;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-body);
  cursor: pointer;
  transition: var(--transition);
}

.webpage-card__action:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.webpage-card__action:active {
  transform: translateY(1px);
}

.file-output-card {
  padding: 12px;
  background: transparent;
  box-shadow: none;
}

.file-output-card .file-card {
  max-width: 100%;
}

.file-output-card__description {
  margin-top: 8px;
  color: var(--color-text-secondary);
  font-size: 12px;
  line-height: 18px;
}

.ui-form-status-card {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.ui-form-status-card.success,
.ui-form-status-card.resolved {
  color: var(--color-status-success);
  background: var(--color-status-success-bg);
}

.ui-form-status-card.failed,
.ui-form-status-card.cancelled {
  color: var(--color-status-error);
  background: var(--color-status-error-bg);
}

.message-input {
  padding: 12px 24px 24px;
  background: transparent;
}

.message-input__shell {
  max-width: 1032px;
  margin: 0 auto;
  border-radius: 20px;
  background: var(--color-bg-surface);
  border: 0.6px solid var(--color-border-default);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--color-text-secondary) 20%, transparent);
  transition: var(--transition);
}

.message-input__shell:hover,
.message-input__shell:focus-within {
  border-color: var(--color-border-strong);
  box-shadow: 0 6px 18px color-mix(in srgb, var(--color-text-secondary) 26%, transparent);
}

.message-input__file {
  display: none;
}

.message-input__attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 16px 0;
}

.attachment-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  max-width: min(100%, 360px);
  height: 32px;
  padding: 0 6px 0 10px;
  border-radius: var(--radius-md);
  background: var(--color-bg-muted);
  color: var(--color-text-primary);
  font-size: 13px;
}

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

.attachment-chip__size {
  flex-shrink: 0;
  color: var(--color-text-secondary);
  font-size: 12px;
}

.attachment-chip__remove {
  position: relative;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text-secondary);
}

.attachment-chip__remove:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.attachment-chip__remove::before,
.attachment-chip__remove::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.4px;
  border-radius: 999px;
  background: currentColor;
}

.attachment-chip__remove::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.attachment-chip__remove::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.message-input__field {
  padding: 12px 16px 0;
  min-height: 54px;
  max-height: 120px;
}

.message-input__field textarea {
  width: 100%;
  max-width: 100%;
  min-height: 54px;
  max-height: 120px;
  box-sizing: border-box;
  border: none;
  border-radius: 0;
  padding: 0;
  resize: none;
  outline: none;
  box-shadow: none;
  background: transparent;
  color: var(--color-text-primary);
  font-size: 15px;
  line-height: 24px;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  overflow-x: hidden;
  overflow-y: auto;
}

.message-input__field textarea::placeholder {
  color: var(--color-text-disabled);
}

.message-input__field textarea:disabled {
  opacity: 0.72;
}

.message-input__toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px 12px;
}

.message-input__controls {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  min-width: 0;
}

.toolbar-btn {
  height: 32px;
  padding: 0 12px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  line-height: 1;
  transition: var(--transition);
  gap: 6px;
}

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

.toolbar-btn:disabled {
  color: var(--color-text-disabled);
}

.toolbar-btn--icon {
  width: 32px;
  padding: 0;
  color: var(--color-text-body);
}

.toolbar-plus {
  position: relative;
  width: 16px;
  height: 16px;
  display: inline-block;
}

.toolbar-plus::before,
.toolbar-plus::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 14px;
  height: 1.6px;
  border-radius: 999px;
  background: currentColor;
  transform: translate(-50%, -50%);
}

.toolbar-plus::after {
  width: 1.6px;
  height: 14px;
}

.agent-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
  height: 32px;
  padding: 0 8px;
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: 13px;
}

.agent-chip img {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  object-fit: cover;
}

.agent-chip span {
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.message-input__action {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border: none;
  border-radius: 50%;
  background: var(--color-brand-primary);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: var(--transition);
}

.message-input__action:hover:not(:disabled) {
  background: var(--color-brand-primary-hover);
}

.message-input__action:disabled {
  background: var(--color-bg-muted);
  color: var(--color-text-disabled);
}

.message-input__action--stop {
  background: var(--color-status-error);
}

.error-text {
  max-width: 1032px;
  margin: 8px auto 0;
  color: var(--color-status-error);
  font-size: 13px;
}

.nexbot-scrollbar {
  scrollbar-width: thin;
  scrollbar-color: var(--color-scrollbar-thumb) transparent;
}

.nexbot-scrollbar::-webkit-scrollbar {
  width: 8px;
}

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

.nexbot-scrollbar::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: var(--color-scrollbar-thumb);
}

.nexbot-scrollbar::-webkit-scrollbar-thumb:hover {
  background: var(--color-scrollbar-thumb-hover);
}

/* ===== Chat header chevron + dropdown menu (matching nexbot) ===== */
.chat-header__chevron {
  flex-shrink: 0;
  color: var(--color-text-secondary);
  transition: transform 0.18s ease;
}

.chat-header__chevron--open {
  transform: rotate(180deg);
}

.chat-header__menu,
.history-item-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 140px;
  padding: 4px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-radius: 20px;
  border: 1px solid var(--color-border-default);
  background: var(--color-bg-surface);
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-text-secondary) 30%, transparent);
  z-index: 100;
}

.history-item-menu {
  position: fixed;
  top: auto;
  left: auto;
  z-index: 300;
}

.chat-header__menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--color-text-primary);
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.chat-header__menu-item:hover {
  background: var(--color-bg-hover);
}

.chat-header__menu-item--danger:hover {
  background: var(--color-status-error-bg);
  color: var(--color-status-error);
}

.chat-header__menu-divider {
  height: 1px;
  margin: 0 4px;
  background: var(--color-border-subtle);
}

/* ===== Chat header rename input ===== */
.chat-header__rename-wrap {
  display: inline-grid;
  min-width: 80px;
  max-width: 480px;
}

.chat-header__rename-input {
  grid-area: 1 / 1;
  min-width: 0;
  border: 1px solid var(--color-brand-primary);
  border-radius: 8px;
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.4;
  outline: none;
  padding: 4px 8px;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-brand-primary) 12%, transparent);
}

/* ===== Scroll-to-bottom button (matching nexbot) ===== */
.scroll-to-bottom {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

.scroll-to-bottom__btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border-default);
  background: var(--color-bg-surface);
  color: var(--color-text-secondary);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--color-text-secondary) 20%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  padding: 0;
}

.scroll-to-bottom__btn:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}

/* ===== Sidebar collapsed state (matching nexbot) ===== */
.nexbot-sidebar.collapsed {
  width: 64px;
  min-width: 64px;
  transition: width 0.2s ease;
  overflow: visible;
}

.nexbot-sidebar.collapsed .sidebar-header {
  justify-content: center;
  padding: 16px 12px 8px;
}

.nexbot-sidebar.collapsed .brand-block {
  display: none;
}

.nexbot-sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 8px;
}

.nexbot-sidebar.collapsed .nav-copy {
  display: none;
}

.nexbot-sidebar.collapsed .sidebar-history,
.nexbot-sidebar.collapsed .sidebar-footer {
  display: none;
}

.nexbot-sidebar:not(.collapsed) {
  transition: width 0.2s ease;
}

/* ===== Message input locked state (matching nexbot) ===== */
.message-input--locked .message-input__shell {
  background: var(--color-bg-page);
  opacity: 0.8;
}

/* ===== History search button (matching nexbot) ===== */
.history-search-btn {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 0;
  transition: var(--transition);
}

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

.sidebar-search-row {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 8px 8px;
}

.sidebar-search-row .search-input {
  flex: 1;
  min-width: 0;
  height: 30px;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  font-size: 12px;
  font-family: var(--font-family-sans);
  padding: 0 8px;
  outline: none;
  transition: var(--transition);
}

.sidebar-search-row .search-input:focus {
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-brand-primary) 12%, transparent);
}

.sidebar-search-row .search-input::placeholder {
  color: var(--color-text-placeholder);
}

/* ===== History item more button ===== */
.history-item__meta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  flex-shrink: 0;
}

.history-item__more {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--color-text-placeholder);
  opacity: 0;
  cursor: pointer;
  transition: var(--transition);
  padding: 0;
}

.history-item:hover .history-item__more {
  opacity: 1;
}

.history-item__more:hover {
  background: color-mix(in srgb, var(--black-10) 60%, transparent);
  color: var(--color-text-primary);
}

@keyframes userChatStreamCaret {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.2;
  }
}

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

@media (max-width: 960px) {
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
  }

  .sidebar {
    width: 100%;
    min-width: 0;
    max-height: 300px;
    border-right: 0;
    border-bottom: 1px solid var(--color-border-default);
  }

  .sidebar-footer {
    display: none;
  }

  .message-input,
  .messages-container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .chat-welcome {
    padding-top: 28px;
  }

  .image-preview-panel {
    width: 100%;
    min-width: 0;
  }

  .chat-window--preview-open .chat-top-actions {
    right: 18px;
  }
}

@media (max-width: 640px) {
  .message-input {
    padding: 12px 12px 18px;
  }

  .message-input__toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .message-input__action {
    align-self: flex-end;
  }
}