:root {
  color-scheme: light;
  --page: #ffffff;
  --sidebar: #f7f7f8;
  --hover: #ececed;
  --line: #e6e6e8;
  --text: #202123;
  --muted: #6f7075;
  --accent: #10a37f;
  --accent-hover: #0d8f70;
  --danger: #c2413a;
  --assistant: #f7f7f8;
  --sidebar-width: 280px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html, body { width: 100%; height: 100%; margin: 0; }

body { background: var(--page); color: var(--text); overflow: hidden; }

button, textarea, select { font: inherit; letter-spacing: 0; }
button { color: inherit; }

.app-shell { display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); height: 100dvh; }

.sidebar {
  display: flex;
  min-width: 0;
  flex-direction: column;
  background: var(--sidebar);
  border-right: 1px solid var(--line);
  padding: 12px;
  z-index: 20;
}

.sidebar-top, .brand, .sidebar-footer, .topbar, .topbar-actions, .skill-control,
.user-box, .approval-actions, .composer-meta { display: flex; align-items: center; }

.sidebar-top { justify-content: space-between; min-height: 40px; }
.brand { gap: 10px; font-size: 14px; font-weight: 650; }
.brand-mark, .welcome-mark {
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--accent);
  font-weight: 750;
}
.brand-mark { width: 28px; height: 28px; border-radius: 6px; font-size: 14px; }
.welcome-mark { width: 42px; height: 42px; border-radius: 8px; font-size: 20px; }

.icon-button {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 0;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  font-size: 19px;
}
.icon-button:hover { background: var(--hover); }
.sidebar-close { display: none; }

.new-chat {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  margin: 14px 0 16px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  cursor: pointer;
  font-weight: 600;
  text-align: left;
}
.new-chat:hover { background: #f1f1f2; }
.plus { font-size: 22px; line-height: 1; }

.session-nav { min-height: 0; flex: 1; overflow-y: auto; }
.section-label { padding: 6px 10px; color: var(--muted); font-size: 12px; font-weight: 650; }
.session-list { display: flex; flex-direction: column; gap: 2px; }
.session-row { display: grid; grid-template-columns: minmax(0, 1fr) 32px; border-radius: 6px; }
.session-row.active { background: var(--hover); }
.session-row:hover { background: var(--hover); }
.session-open {
  min-width: 0;
  height: 40px;
  padding: 0 10px;
  overflow: hidden;
  border: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}
.session-delete { opacity: 0; width: 32px; height: 40px; font-size: 15px; }
.session-row:hover .session-delete, .session-row.active .session-delete { opacity: 1; }
.session-empty { padding: 14px 10px; color: var(--muted); font-size: 13px; }

.sidebar-footer { gap: 10px; min-height: 58px; padding: 10px; border-top: 1px solid var(--line); }
.sidebar-footer div { display: flex; min-width: 0; flex-direction: column; gap: 2px; }
.sidebar-footer strong { font-size: 13px; }
.sidebar-footer span:not(.status-dot) { color: var(--muted); font-size: 12px; }
.status-dot { width: 8px; height: 8px; flex: 0 0 auto; border-radius: 50%; background: #d29c2f; }
.status-dot.online { background: var(--accent); }
.status-dot.offline { background: var(--danger); }

.workspace { display: grid; min-width: 0; min-height: 0; grid-template-rows: 58px minmax(0, 1fr) auto; background: var(--page); }
.topbar { justify-content: space-between; padding: 0 18px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); }
.menu-button { display: none; }
.model-identity { display: flex; min-width: 0; flex-direction: column; gap: 1px; }
.model-identity strong { font-size: 15px; }
.model-identity span { overflow: hidden; color: var(--muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.topbar-actions { gap: 8px; }
.skill-control { gap: 8px; color: var(--muted); font-size: 12px; }
/* 技能名属于内部实现：只有 debug 模式才解除 hidden，因此需要显式覆盖上面共用的 display:flex。 */
.skill-control[hidden] { display: none; }
.skill-control select { height: 34px; max-width: 160px; border: 1px solid var(--line); border-radius: 6px; background: #fff; color: var(--text); padding: 0 28px 0 10px; }

/* 登录态区域：认证开启时显示当前用户或「未登录」入口。 */
.user-box { gap: 8px; }
.user-box[hidden] { display: none; }
.user-name { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); font-size: 12px; }
.user-login { display: inline-flex; height: 32px; padding: 0 11px; align-items: center; border-radius: 6px; background: var(--text); color: #fff; font-size: 12px; text-decoration: none; }
.user-login:hover { background: #303238; }
.user-logout { width: auto; height: 32px; padding: 0 10px; border: 1px solid var(--line); border-radius: 6px; background: #fff; font-size: 12px; }
.knowledge-button { min-height: 32px; padding: 0 10px; font-size: 12px; }

.conversation {
	width: 100%;
	height: 100%;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scroll-behavior: auto;
  scrollbar-gutter: stable;
}
.conversation.has-messages .welcome { display: none; }
.welcome { display: flex; width: min(680px, calc(100% - 40px)); height: 100%; min-height: 430px; margin: 0 auto; align-items: center; justify-content: center; flex-direction: column; text-align: center; }
.welcome[hidden] { display: none !important; }
.welcome h1 { margin: 20px 0 6px; font-size: 28px; line-height: 1.25; font-weight: 650; }
.welcome p { margin: 0; color: var(--muted); font-size: 14px; }
.suggestions { display: grid; width: 100%; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 30px; }
.suggestions button { min-height: 72px; padding: 12px; border: 1px solid var(--line); border-radius: 7px; background: #fff; cursor: pointer; text-align: left; font-size: 13px; line-height: 1.45; }
.suggestions button:hover { background: var(--sidebar); }

.messages:empty { display: none; }
.messages { padding-bottom: 24px; }
.message { width: 100%; border-bottom: 1px solid transparent; }
.message.assistant { background: var(--assistant); border-color: #ededee; }
.message-inner { display: grid; width: min(760px, calc(100% - 40px)); margin: 0 auto; grid-template-columns: 32px minmax(0, 1fr); gap: 16px; padding: 24px 0; }
.avatar { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 6px; color: #fff; background: #4b5563; font-size: 12px; font-weight: 700; }
.assistant .avatar { background: var(--accent); }
.message-content { min-width: 0; }
.message-body { min-width: 0; padding-top: 3px; font-size: 15px; line-height: 1.7; overflow-wrap: anywhere; }
.user .message-body { white-space: pre-wrap; }
.message-body.empty { min-height: 22px; }
.message-body p { margin: 0 0 12px; }
.message-body p:last-child { margin-bottom: 0; }
.message-body h1, .message-body h2, .message-body h3, .message-body h4, .message-body h5, .message-body h6 { margin: 16px 0 8px; line-height: 1.35; }
.message-body h1:first-child, .message-body h2:first-child, .message-body h3:first-child { margin-top: 0; }
.message-body ul, .message-body ol { margin: 6px 0 12px; padding-left: 24px; }
.message-body li { margin: 3px 0; }
.message-body strong { font-weight: 700; }
.message-body em { font-style: italic; }
.message-body a { color: var(--accent-hover); text-decoration: underline; }
.message-body code { padding: 2px 5px; border-radius: 4px; background: #ececef; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .9em; }
.message-body pre { margin: 10px 0; padding: 12px; overflow-x: auto; border-radius: 7px; background: #202124; color: #f5f5f5; }
.message-body pre code { padding: 0; background: transparent; color: inherit; font-size: 12px; white-space: pre; }
.stream-status { display: flex; align-items: center; gap: 7px; margin: 0 0 8px; color: #1686a6; font-size: 12px; }
.stream-status[hidden] { display: none !important; }
.stream-status-dot { width: 8px; height: 8px; border-radius: 50%; background: #2ea7c7; animation: pulse 1.1s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .35; transform: scale(.75); } }
.think-block { margin: 0 0 10px; border: 1px solid #ead59b; border-radius: 7px; background: #fff9e8; overflow: hidden; }
.think-block[hidden] { display: none !important; }
.think-toggle { display: flex; width: 100%; align-items: center; gap: 7px; padding: 8px 10px; border: 0; background: transparent; color: #856718; cursor: pointer; font-size: 12px; text-align: left; }
.think-toggle:hover { background: #fff3cf; }
.think-toggle-icon { width: 11px; font-size: 11px; }
.think-toggle-label { font-weight: 650; }
.think-toggle-hint { margin-left: auto; color: #aa8b3b; }
.think-text { max-height: 220px; margin: 0 10px 10px; padding: 9px 10px; overflow: auto; border-radius: 5px; background: #292a2d; color: #f5f5f5; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12px; line-height: 1.6; white-space: pre-wrap; }
.think-block.collapsed .think-text { display: none; }
.sources { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 12px; color: var(--muted); font-size: 11px; }
.sources[hidden] { display: none !important; }
.source-label { font-weight: 650; }
.source-chip, .confidence { max-width: 100%; padding: 3px 7px; overflow: hidden; border: 1px solid var(--line); border-radius: 999px; background: #fff; text-overflow: ellipsis; white-space: nowrap; }
.confidence { color: var(--accent-hover); }
.message-actions { display: flex; min-height: 28px; align-items: center; margin-top: 8px; opacity: 0; transition: opacity .15s ease; }
.message:hover .message-actions, .message-actions:focus-within { opacity: 1; }
.message.pending .message-actions { visibility: hidden; }
.copy-button { min-height: 28px; padding: 0 7px; border: 0; border-radius: 5px; background: transparent; color: var(--muted); cursor: pointer; font-size: 12px; }
.copy-button:hover { background: var(--hover); color: var(--text); }
.message.pending .message-body::after { content: ""; display: inline-block; width: 7px; height: 16px; margin-left: 3px; vertical-align: -2px; background: var(--accent); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.composer-region { padding: 14px max(20px, calc((100% - 780px) / 2)) 18px; background: linear-gradient(to top, #fff 78%, rgba(255,255,255,0)); }
.composer { display: grid; grid-template-columns: 34px minmax(0, 1fr) 42px; align-items: end; gap: 8px; min-height: 54px; padding: 8px 8px 8px 10px; border: 1px solid #d7d7da; border-radius: 8px; background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,.06); }
.composer:focus-within { border-color: #a7a7aa; box-shadow: 0 3px 16px rgba(0,0,0,.09); }
.composer textarea { width: 100%; max-height: 180px; resize: none; border: 0; outline: 0; background: transparent; color: var(--text); padding: 8px 0; line-height: 1.5; }
.composer textarea::placeholder { color: #8d8e92; }
.send-button { display: grid; width: 38px; height: 38px; place-items: center; border: 0; border-radius: 7px; background: var(--text); color: #fff; cursor: pointer; font-size: 21px; font-weight: 700; }
.send-button:disabled { background: #d1d1d3; cursor: default; }
.attachment-button { display: grid; width: 34px; height: 38px; place-items: center; border: 0; border-radius: 7px; background: transparent; color: var(--muted); cursor: pointer; font-size: 23px; }
.attachment-button:hover { background: var(--hover); color: var(--text); }
.attachment-button:disabled { opacity: .45; cursor: default; }
.pending-attachments { display: flex; flex-wrap: wrap; gap: 7px; padding: 8px 3px 0; }
.attachment-chip { display: inline-flex; align-items: center; gap: 7px; max-width: 100%; border: 1px solid var(--line); border-radius: 7px; padding: 5px 8px; background: #fff; color: var(--muted); font-size: 11px; }
.attachment-chip-name { max-width: 240px; overflow: hidden; color: var(--text); text-overflow: ellipsis; white-space: nowrap; }
.attachment-chip-status { white-space: nowrap; }
.attachment-chip button { border: 0; background: transparent; color: var(--muted); cursor: pointer; }
.send-button.stop span { width: 12px; height: 12px; background: #fff; font-size: 0; }
.composer-meta { justify-content: space-between; gap: 12px; padding: 7px 4px 0; color: var(--muted); font-size: 11px; }

.approval-panel { align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 10px; padding: 13px 14px; border: 1px solid #e3c56c; border-radius: 7px; background: #fff8df; }
.approval-panel:not([hidden]) { display: flex; }
.approval-panel > div:first-child { display: flex; min-width: 0; flex-direction: column; gap: 3px; }
.approval-panel strong { font-size: 13px; }
.approval-panel span { overflow: hidden; color: #6e5c24; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.approval-actions { flex: 0 0 auto; gap: 8px; }
.primary-button, .secondary-button { min-height: 34px; border-radius: 6px; padding: 0 12px; cursor: pointer; font-size: 13px; font-weight: 600; }
.primary-button { border: 1px solid var(--accent); background: var(--accent); color: #fff; }
.primary-button:hover { background: var(--accent-hover); }
.secondary-button { border: 1px solid #d0b85e; background: transparent; }

.toast { position: fixed; left: 50%; bottom: 98px; z-index: 50; max-width: min(440px, calc(100% - 32px)); transform: translate(-50%, 18px); padding: 10px 14px; border-radius: 6px; background: #292a2d; color: #fff; opacity: 0; pointer-events: none; transition: .2s ease; font-size: 13px; }
.toast.visible { opacity: 1; transform: translate(-50%, 0); }
.sidebar-scrim { display: none; }

.confirm-dialog { width: min(420px, calc(100% - 32px)); padding: 0; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--text); box-shadow: 0 20px 56px rgba(0,0,0,.22); }
.confirm-dialog::backdrop { background: rgba(0,0,0,.38); }
.confirm-dialog form { padding: 22px; }
.confirm-dialog h2 { margin: 0 0 8px; font-size: 18px; line-height: 1.35; }
.confirm-dialog p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 22px; }
.danger-button { min-height: 34px; padding: 0 13px; border: 1px solid var(--danger); border-radius: 6px; background: var(--danger); color: #fff; cursor: pointer; font-size: 13px; font-weight: 600; }
.danger-button:hover { background: #a93631; }

.exec-panel { margin-bottom: 10px; border: 1px solid var(--line); border-radius: 7px; background: #fff; overflow: hidden; }
.exec-panel[hidden] { display: none !important; }
.exec-toggle { display: flex; width: 100%; align-items: center; gap: 8px; padding: 8px 10px; border: 0; background: transparent; cursor: pointer; text-align: left; font-size: 12px; color: var(--muted); }
.exec-toggle:hover { background: var(--sidebar); }
.exec-toggle-icon { display: inline-block; font-size: 10px; transition: transform .15s ease; }
.exec-panel:not(.collapsed) .exec-toggle-icon { transform: rotate(90deg); }
.exec-toggle-label { font-weight: 650; color: var(--text); }
.exec-toggle-meta { margin-left: auto; font-variant-numeric: tabular-nums; }
.exec-list { display: flex; flex-direction: column; gap: 5px; margin: 0; padding: 0 12px 10px; list-style: none; }
.exec-panel.collapsed .exec-list { display: none; }
.exec-item { display: grid; grid-template-columns: 16px minmax(0, 1fr) auto; align-items: baseline; gap: 8px; font-size: 12px; color: var(--muted); }
.exec-icon { font-size: 11px; line-height: 1.6; text-align: center; color: var(--muted); }
.exec-item[data-state="pending"] .exec-icon, .exec-item[data-state="done"] .exec-icon { color: var(--accent); }
.exec-item[data-state="failed"] .exec-icon, .exec-item[data-state="failed"] .exec-text { color: var(--danger); }
.exec-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.exec-time { font-variant-numeric: tabular-nums; }

.model-selector {
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--page);
  cursor: pointer;
  font-size: 13px;
  color: var(--muted);
  transition: background .15s;
}
.model-selector:hover { background: var(--hover); }

.model-dialog {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0;
  box-shadow: 0 8px 32px rgba(0,0,0,.12);
  max-width: 420px;
  width: calc(100vw - 32px);
}
.knowledge-dialog {
  width: min(680px, calc(100vw - 32px));
  max-height: min(720px, calc(100vh - 40px));
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0;
  box-shadow: 0 8px 32px rgba(0,0,0,.12);
}
.knowledge-dialog::backdrop { background: rgba(0,0,0,.32); }
.dialog-subtitle { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.knowledge-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 12px 20px; border-bottom: 1px solid var(--line); }
.knowledge-upload { display: inline-flex; align-items: center; }
.knowledge-list { max-height: 480px; overflow: auto; padding: 12px 20px 20px; }
.knowledge-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.knowledge-row:last-child { border-bottom: 0; }
.knowledge-meta { min-width: 0; }
.knowledge-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; font-weight: 600; }
.knowledge-detail { margin-top: 3px; color: var(--muted); font-size: 11px; }
.knowledge-delete { min-height: 30px; padding: 0 9px; border: 1px solid #e0b4b0; border-radius: 6px; background: #fff; color: var(--danger); cursor: pointer; font-size: 12px; }
.knowledge-empty { padding: 24px 0; color: var(--muted); text-align: center; font-size: 13px; }
.model-dialog::backdrop { background: rgba(0,0,0,.32); }
.model-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 12px;
  border-bottom: 1px solid var(--line);
}
.model-dialog-header h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 650;
}
.model-list {
  padding: 12px;
  max-height: 360px;
  overflow-y: auto;
}
.model-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  margin-bottom: 8px;
  background: var(--page);
  cursor: pointer;
  transition: background .15s;
}
.model-item:last-child { margin-bottom: 0; }
.model-item:hover { background: var(--hover); }
.model-item.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.model-item.active .model-provider { color: rgba(255,255,255,.8); }
.model-icon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 650;
  font-size: 14px;
  flex-shrink: 0;
}
.model-item.active .model-icon { background: rgba(255,255,255,.2); }
.model-info { flex: 1; min-width: 0; }
.model-name {
  font-weight: 600;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.model-provider {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

@media (max-width: 760px) {
  .app-shell { display: block; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: min(86vw, 320px); transform: translateX(-100%); transition: transform .2s ease; box-shadow: 8px 0 28px rgba(0,0,0,.16); }
  body.sidebar-open .sidebar { transform: translateX(0); }
  .sidebar-scrim { position: fixed; inset: 0; z-index: 15; background: rgba(0,0,0,.32); }
  body.sidebar-open .sidebar-scrim { display: block; }
  .sidebar-close, .menu-button { display: grid; }
  .workspace { height: 100dvh; grid-template-rows: 56px minmax(0, 1fr) auto; }
  .topbar { padding: 0 10px; gap: 8px; }
  .model-identity { margin-right: auto; }
  .skill-control > span { display: none; }
  .skill-control select { max-width: 112px; }
  .topbar-actions { gap: 2px; }
  .knowledge-button { padding: 0 7px; }
  .welcome { width: calc(100% - 28px); min-height: 360px; }
  .welcome h1 { font-size: 24px; }
  .suggestions { grid-template-columns: 1fr; margin-top: 24px; }
  .suggestions button { min-height: 50px; }
  .message-inner { width: calc(100% - 28px); grid-template-columns: 28px minmax(0, 1fr); gap: 12px; padding: 20px 0; }
  .avatar { width: 28px; height: 28px; }
  .message-actions { opacity: 1; }
  .composer-region { padding: 10px 10px max(10px, env(safe-area-inset-bottom)); }
  .composer-meta span:last-child { display: none; }
  .approval-panel { align-items: stretch; flex-direction: column; }
  .approval-actions { justify-content: flex-end; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}