.ai-chat-shell {
  --ai-bg: #f3f2f2;
  --ai-surface: #eae9e9;
  --ai-text: #201f1d;
  --ai-accent: #b68235;
  --ai-divider: rgba(32, 31, 29, 0.16);
  --ai-neutral-100: #f8f4f4;
  --ai-neutral-500: #9b9797;
  --ai-neutral-800: #444141;
  --ai-danger: #b93b2e;
  --ai-accent-100: #fff3e4;
  --ai-accent-800: #5a3b0a;
  --ai-radius-sm: 2px;
  --ai-radius-md: 4px;
  --ai-sp-1: 4.6px;
  --ai-sp-2: 9.2px;
  --ai-sp-3: 13.8px;
  --ai-sp-4: 18.4px;
  --ai-sp-5: 23px;
  --ai-sp-6: 27.6px;
  --ai-sp-8: 36.8px;
  display: flex;
  background: var(--ai-bg);
  color: var(--ai-text);
  font-family: "Inter", sans-serif;
  overflow: hidden;
}

.ai-sidebar {
  flex-shrink: 0;
  overflow: hidden;
  background: var(--ai-surface);
  border-right: 1px solid var(--ai-divider);
  transition: width 0.25s ease;
}

.ai-sidebar-inner {
  width: 264px;
  height: 100%;
  padding: var(--ai-sp-4);
  display: flex;
  flex-direction: column;
  gap: var(--ai-sp-4);
  box-sizing: border-box;
}

.ai-brand-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.ai-brand-title {
  font-weight: 600;
  font-size: 19px;
}

.ai-hr {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--ai-divider);
}

.ai-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 3px 10px;
  border-radius: 3px;
  background: transparent;
}

.ai-tag-outline {
  border: 1px solid var(--ai-accent);
  color: var(--ai-accent);
}

.ai-tag-accent {
  background: var(--ai-accent-100);
  color: var(--ai-accent-800);
}

.ai-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  text-decoration: none;
  font-family: "Inter", sans-serif;
  font-weight: 600;
  font-size: 14px;
  line-height: 1.2;
  color: var(--ai-text);
  background: transparent;
  border: 1px solid transparent;
  padding: var(--ai-sp-2) calc(var(--ai-sp-3) * 1.2);
  border-radius: var(--ai-radius-md);
}

.ai-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.ai-btn-primary {
  color: var(--ai-accent);
  border-color: var(--ai-accent);
}

.ai-btn-primary:hover {
  background: rgba(182, 130, 53, 0.12);
}

.ai-btn-secondary {
  border-color: var(--ai-divider);
}

.ai-btn-secondary:hover {
  background: rgba(32, 31, 29, 0.07);
}

.ai-btn-ghost {
  color: var(--ai-accent);
  padding-inline: var(--ai-sp-1);
  border: none;
}

.ai-btn-ghost:hover {
  background: rgba(182, 130, 53, 0.1);
}

.ai-btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
}

.ai-btn-block {
  width: 100%;
}

.ai-input {
  width: 100%;
  min-height: 36px;
  padding: 6px 10px;
  font: inherit;
  font-size: 13px;
  color: var(--ai-text);
  background: transparent;
  border: 1px solid var(--ai-divider);
  border-radius: var(--ai-radius-md);
  box-sizing: border-box;
}

.ai-input:focus-visible {
  outline: none;
  border-color: var(--ai-accent);
}

.ai-group-label {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(32, 31, 29, 0.55);
}

.ai-chat-item {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  min-width: 0;
  text-align: left;
  background: transparent;
  border: none;
  padding: 6px 8px;
  font-family: inherit;
  font-size: 13.5px;
  color: var(--ai-text);
  font-weight: 400;
  cursor: pointer;
  border-radius: var(--ai-radius-sm);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.ai-chat-item-row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 2px;
}

.ai-kebab-btn {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border: none;
  background: transparent;
  border-radius: var(--ai-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--ai-text);
  opacity: 0;
  transition: opacity 0.15s ease;
}

.ai-kebab-btn.is-visible {
  opacity: 1;
}

.ai-kebab-btn:hover {
  background: rgba(32, 31, 29, 0.08);
}

.ai-msg-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.ai-msg-action-btn {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border: none;
  background: transparent;
  border-radius: var(--ai-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--ai-text);
  opacity: 0;
  transition: opacity 0.15s ease;
}

.ai-msg-row:hover .ai-msg-action-btn {
  opacity: 1;
}

.ai-msg-action-btn:hover {
  background: rgba(32, 31, 29, 0.08);
}

.ai-unread-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ai-accent);
  flex-shrink: 0;
}

.ai-rename-input {
  flex: 1;
  min-width: 0;
  height: 28px;
  padding: 2px 6px;
  font-size: 13px;
}

.ai-context-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
}

.ai-context-menu {
  position: fixed;
  z-index: 201;
  min-width: 210px;
  background: var(--ai-bg);
  border: 1px solid var(--ai-divider);
  border-radius: var(--ai-radius-md);
  box-shadow: 0 3px 10px rgba(45, 43, 43, 0.16);
  padding: var(--ai-sp-1);
  display: flex;
  flex-direction: column;
  font-family: inherit;
}

.ai-context-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  padding: 7px 10px;
  border: none;
  background: transparent;
  font-size: 13.5px;
  font-family: inherit;
  color: var(--ai-text);
  cursor: pointer;
  border-radius: var(--ai-radius-sm);
  text-align: left;
}

.ai-context-item:hover {
  background: rgba(32, 31, 29, 0.05);
}

.ai-context-item.is-danger {
  color: var(--ai-danger);
}

.ai-context-hint {
  font-size: 11px;
  color: var(--ai-neutral-500);
}

.ai-context-submenu {
  position: absolute;
  left: 100%;
  margin-left: 4px;
  min-width: 150px;
  background: var(--ai-bg);
  border: 1px solid var(--ai-divider);
  border-radius: var(--ai-radius-md);
  box-shadow: 0 3px 10px rgba(45, 43, 43, 0.16);
  padding: var(--ai-sp-1);
  display: flex;
  flex-direction: column;
}

.ai-chat-item:hover {
  background: rgba(32, 31, 29, 0.05);
}

.ai-chat-item.is-active {
  color: var(--ai-accent);
  font-weight: 600;
}

.ai-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.ai-header {
  height: 56px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--ai-sp-6);
  border-bottom: 1px solid var(--ai-divider);
  gap: var(--ai-sp-2);
  min-width: 0;
}

.ai-header-title {
  font-weight: 600;
  font-size: 18px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.ai-content {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
}

.ai-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--ai-sp-8) var(--ai-sp-6);
  text-align: center;
  gap: var(--ai-sp-4);
}

.ai-empty-icon {
  animation: aiFloatY 4s ease-in-out infinite;
}

@keyframes aiFloatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.ai-empty-heading {
  font-weight: 600;
  font-size: 27px;
  margin-bottom: 8px;
}

.ai-empty-sub {
  color: rgba(32, 31, 29, 0.55);
  font-size: 15px;
  max-width: 440px;
}

.ai-suggestions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--ai-sp-3);
  max-width: 600px;
  width: 100%;
  margin-top: var(--ai-sp-2);
}

.ai-card {
  display: flex;
  flex-direction: column;
  gap: var(--ai-sp-2);
  padding: var(--ai-sp-3);
  border-radius: var(--ai-radius-md);
  background: transparent;
  border: 1px solid var(--ai-divider);
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}

.ai-card:hover {
  border-color: var(--ai-accent);
  background: rgba(182, 130, 53, 0.06);
}

.ai-card-kicker {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ai-accent);
}

.ai-card-title {
  font-weight: 600;
  font-size: 15px;
  line-height: 1.2;
}

.ai-thread {
  flex: 1;
  overflow-y: auto;
  padding: var(--ai-sp-6);
}

.ai-thread-inner {
  max-width: 700px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--ai-sp-6);
}

.ai-msg-row {
  display: flex;
  animation: aiMsgIn 0.4s ease both;
}

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

.ai-msg-row.is-user { justify-content: flex-end; }
.ai-msg-row.is-ai { justify-content: flex-start; }

.ai-msg-box.is-user {
  max-width: 78%;
  width: fit-content;
  border: 1px solid var(--ai-divider);
  border-radius: var(--ai-radius-md);
  padding: var(--ai-sp-3);
}

.ai-msg-box.is-ai {
  max-width: 100%;
  width: 100%;
}

.ai-role-label {
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ai-accent);
  margin-bottom: 6px;
}

.ai-msg-title {
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 8px;
}

.ai-msg-text {
  font-size: 15.5px;
  line-height: 1.7;
  white-space: pre-line;
}

.ai-cursor {
  display: inline-block;
  width: 2px;
  height: 15px;
  background: var(--ai-accent);
  vertical-align: -3px;
  margin-left: 2px;
  animation: aiBlink 0.9s steps(1) infinite;
}

@keyframes aiBlink {
  0%, 50% { opacity: 1; }
  50.01%, 100% { opacity: 0; }
}

.ai-msg-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--ai-sp-2);
}

.ai-msg-list li {
  font-size: 15px;
  line-height: 1.6;
  display: flex;
  gap: 8px;
}

.ai-msg-list li::before {
  content: "—";
  color: var(--ai-accent);
}

.ai-code-block {
  border: 1px solid var(--ai-divider);
  border-radius: var(--ai-radius-md);
  background: var(--ai-surface);
  overflow: hidden;
}

.ai-code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--ai-sp-2) var(--ai-sp-3);
  border-bottom: 1px solid var(--ai-divider);
}

.ai-code-pre {
  margin: 0;
  padding: var(--ai-sp-3);
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-x: auto;
}

.ai-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-top: 2px;
}

.ai-table th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(32, 31, 29, 0.6);
  padding: var(--ai-sp-2);
  border-bottom: 1px solid var(--ai-divider);
}

.ai-table td {
  padding: var(--ai-sp-2);
  border-bottom: 1px solid var(--ai-divider);
}

.ai-markdown {
  white-space: normal;
  overflow-x: auto;
}

.ai-markdown > *:first-child { margin-top: 0; }
.ai-markdown > *:last-child { margin-bottom: 0; }

.ai-markdown p {
  margin: 0 0 var(--ai-sp-3);
  line-height: 1.7;
}

.ai-markdown strong { font-weight: 700; }
.ai-markdown em { font-style: italic; }

.ai-markdown ul,
.ai-markdown ol {
  margin: 0 0 var(--ai-sp-3);
  padding-left: 1.6em;
}

.ai-markdown li {
  line-height: 1.6;
}

.ai-markdown li + li {
  margin-top: 4px;
}

.ai-markdown li::marker {
  color: var(--ai-accent);
}

.ai-markdown h1,
.ai-markdown h2,
.ai-markdown h3,
.ai-markdown h4 {
  font-weight: 600;
  line-height: 1.3;
  margin: var(--ai-sp-3) 0 var(--ai-sp-2);
}

.ai-markdown h1 { font-size: 19px; }
.ai-markdown h2 { font-size: 17.5px; }
.ai-markdown h3,
.ai-markdown h4 { font-size: 16px; }

.ai-markdown a {
  color: var(--ai-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.ai-markdown code {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: var(--ai-surface);
  padding: 1px 5px;
  border-radius: var(--ai-radius-sm);
}

.ai-markdown pre {
  margin: 0 0 var(--ai-sp-3);
  padding: var(--ai-sp-3);
  background: var(--ai-surface);
  border: 1px solid var(--ai-divider);
  border-radius: var(--ai-radius-md);
  overflow-x: auto;
}

.ai-markdown pre code {
  background: none;
  padding: 0;
  font-size: 12.5px;
  line-height: 1.6;
}

.ai-markdown blockquote {
  margin: 0 0 var(--ai-sp-3);
  padding: var(--ai-sp-2) var(--ai-sp-3);
  border-left: 3px solid var(--ai-accent);
  color: rgba(32, 31, 29, 0.7);
  background: rgba(182, 130, 53, 0.06);
}

.ai-markdown hr {
  border: none;
  border-top: 1px solid var(--ai-divider);
  margin: var(--ai-sp-3) 0;
}

.ai-markdown table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 0 0 var(--ai-sp-3);
}

.ai-markdown th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(32, 31, 29, 0.6);
  padding: var(--ai-sp-2);
  border-bottom: 1px solid var(--ai-divider);
  white-space: nowrap;
}

.ai-markdown td {
  padding: var(--ai-sp-2);
  border-bottom: 1px solid var(--ai-divider);
  vertical-align: top;
}

.ai-markdown tr:last-child td {
  border-bottom: none;
}

.ai-thinking {
  display: flex;
  align-items: flex-end;
  gap: 3px;
}

.ai-thinking-dot {
  display: inline-block;
  color: var(--ai-accent);
  animation: aiPawPulse 1.3s ease-in-out infinite;
}

@keyframes aiPawPulse {
  0%, 80%, 100% { opacity: 0.2; transform: scale(0.75) rotate(var(--r, 0deg)); }
  40% { opacity: 1; transform: scale(1) rotate(var(--r, 0deg)); }
}

.ai-composer-wrap {
  padding: var(--ai-sp-4) var(--ai-sp-6) var(--ai-sp-5);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--ai-sp-2);
}

.ai-attach-row {
  width: 100%;
  max-width: 700px;
  display: flex;
}

.ai-composer-box {
  width: 100%;
  max-width: 700px;
  border: 1px solid var(--ai-divider);
  border-radius: var(--ai-radius-md);
  padding: var(--ai-sp-2) var(--ai-sp-2) var(--ai-sp-2) var(--ai-sp-3);
  display: flex;
  flex-direction: column;
  gap: var(--ai-sp-2);
  background: var(--ai-bg);
}

.ai-composer-input {
  border: none;
  outline: none;
  font-size: 15px;
  font-family: inherit;
  padding: 6px 0;
  background: transparent;
  color: var(--ai-text);
  width: 100%;
}

.ai-composer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ai-disclaimer {
  font-size: 11.5px;
  color: rgba(32, 31, 29, 0.55);
}

.ai-dropdown-menu .ai-menu-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  padding: 7px 10px;
  border: none;
  background: transparent;
  font-size: 13px;
  font-family: inherit;
  color: var(--ai-text);
  cursor: pointer;
  border-radius: var(--ai-radius-sm);
  text-align: left;
}

.ai-dropdown-menu .ai-menu-item.is-active {
  color: var(--ai-accent);
}

.ai-dropdown-menu .ai-menu-item:hover {
  background: rgba(32, 31, 29, 0.05);
}

.ai-dropdown-menu .ai-menu-item-lines {
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  min-width: 220px;
}

.ai-dropdown-menu .ai-menu-item-sub {
  font-size: 11px;
  font-weight: 400;
  color: var(--ai-neutral-500);
  white-space: normal;
  line-height: 1.4;
}