:root {
  --bg: #f4f6fa;
  --bg-secondary: #eaeff5;
  --assistant-bubble: #d9e4ef;
  --assistant-text: #2c3e50;
  --user-bubble: #f0ded5;
  --user-text: #4a3228;
  --assistant-accent: #7a9bb5;
  --user-accent: #c4886e;
  --surface: #ffffff;
  --border: #dfe6ee;
  --input-border: #d5dce4;
  --text: #2c3e50;
  --muted: #8494a7;
  --faint: #a8b5c4;
  --thinking-bg: #f0f4f8;
  --thinking-border: #c8d5e2;
  --tool-bg: #fdf6f2;
  --tool-border: #e8d0c0;
  --memory-bg: #f0f4f8;
  --memory-border: #b8cadb;
  color-scheme: light;
  font-family: "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background: var(--bg-secondary);
  color: var(--text);
}

button,
textarea {
  font: inherit;
}

button {
  -webkit-tap-highlight-color: transparent;
}

#app {
  min-height: 100vh;
  position: relative;
}

.shell {
  width: 100%;
  max-width: 430px;
  height: 100vh;
  height: 100dvh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  overflow: hidden;
}

.auth-gate {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(234, 239, 245, 0.92);
  backdrop-filter: blur(6px);
}

.auth-card {
  width: min(100%, 360px);
  display: grid;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  box-shadow: 0 18px 40px rgba(44, 62, 80, 0.12);
}

.auth-card__brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.auth-card__brand strong {
  display: block;
  margin-bottom: 4px;
  font-size: 18px;
}

.auth-card__brand p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.auth-card__field {
  display: grid;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.auth-card__field input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  background: #f9fbfd;
  color: var(--text);
}

.auth-card__error {
  padding: 10px 12px;
  border: 1px solid #e8baba;
  border-radius: 8px;
  background: #fff0f0;
  color: #9f3434;
  font-size: 12px;
}

.auth-card__submit {
  border: 0;
  border-radius: 8px;
  padding: 11px 14px;
  background: var(--assistant-accent);
  color: #fff;
  cursor: pointer;
}

.auth-card__submit:disabled {
  cursor: default;
  opacity: 0.7;
}

.topbar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.menu-button,
.icon-button,
.attach-button,
.send-button {
  display: grid;
  place-items: center;
  border: 0;
  cursor: pointer;
}

.menu-button {
  width: 36px;
  height: 36px;
  gap: 4px;
  background: transparent;
  padding: 8px;
}

.menu-button span {
  width: 18px;
  height: 2px;
  background: var(--muted);
  border-radius: 1px;
}

.avatar {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: #fff;
  font-weight: 700;
}

.avatar--assistant {
  background: var(--assistant-accent);
}

.avatar--user {
  background: var(--user-accent);
}

.topbar__title {
  min-width: 0;
  flex: 1;
  display: grid;
  gap: 2px;
}

.topbar__title strong {
  font-size: 15px;
}

.topbar__title span,
.sidebar__header p {
  font-size: 11px;
  color: var(--muted);
}

.context-pill {
  padding: 4px 8px;
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}

.chat,
.terminal {
  flex: 1;
  overflow-y: auto;
}

.chat {
  padding: 16px 12px;
}

.terminal {
  display: flex;
  flex-direction: column;
  padding: 12px;
  background: #101820;
  color: #dfe8ef;
}

.terminal[hidden] {
  display: none;
}

.terminal__header {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 2px 12px;
  color: #f4f8fb;
}

.terminal__header strong {
  flex: 1;
}

.terminal__header strong {
  font-size: 14px;
}

.terminal__header span {
  color: #8fa3b5;
  font-size: 12px;
}

.terminal__back {
  flex: 0 0 auto;
  border: 1px solid #31485a;
  border-radius: 6px;
  padding: 5px 10px;
  background: #17232e;
  color: #dfe8ef;
  cursor: pointer;
  font-size: 12px;
}

.terminal__back:active {
  background: #223140;
}

.terminal__events {
  flex: 1;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
}

.terminal-event {
  flex: 0 0 auto;
  min-height: 76px;
  border-left: 3px solid #5e7284;
  border-radius: 6px;
  background: #17232e;
  overflow: hidden;
}

.terminal-event--assistant {
  border-left-color: #7a9bb5;
}

.terminal-event--thinking {
  border-left-color: #b8cadb;
}

.terminal-event--tool {
  border-left-color: #c4886e;
}

.terminal-event--result {
  border-left-color: #7fb384;
}

.terminal-event--error {
  border-left-color: #d66b6b;
}

.terminal-event__meta {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border: 0;
  padding: 10px;
  background: #17232e;
  color: #c9d6df;
  cursor: pointer;
  font-size: 12px;
  line-height: 1.35;
  text-align: left;
}

.terminal-event__meta strong {
  min-width: 0;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.terminal-event__meta::after {
  content: "展开";
  flex: 0 0 auto;
  margin-left: 2px;
  color: #7f94a6;
  font-size: 11px;
}

.terminal-event.is-open .terminal-event__meta::after {
  content: "收起";
}

.terminal-event__meta span {
  flex: 0 0 auto;
  color: #7f94a6;
}

.terminal-event__preview {
  display: block;
  min-height: 18px;
  padding: 0 10px 12px;
  color: #aebdca;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
  line-height: 1.45;
}

.terminal-event pre {
  max-height: 260px;
  margin: 0;
  padding: 10px;
  border-radius: 0;
  background: #0f171f;
  color: #dfe8ef;
  overflow: auto;
  font-size: 11px;
}

.settings {
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px 20px;
  display: grid;
  align-content: start;
  gap: 12px;
}

.settings__header {
  display: grid;
  gap: 4px;
  padding: 4px 2px 0;
}

.settings__title-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.settings__header strong {
  font-size: 20px;
}

.settings__header span {
  color: var(--muted);
  font-size: 12px;
  word-break: break-all;
}

.settings__back {
  flex: 0 0 auto;
  border: 1px solid var(--thinking-border);
  border-radius: 6px;
  padding: 5px 10px;
  background: var(--surface);
  color: var(--assistant-text);
  cursor: pointer;
  font-size: 12px;
}

.settings-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.settings-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.settings-card__head strong {
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
}

.settings-card__head p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.settings-save {
  flex: 0 0 auto;
  border: 1px solid var(--thinking-border);
  border-radius: 6px;
  padding: 6px 12px;
  background: var(--thinking-bg);
  color: var(--assistant-text);
  cursor: pointer;
  font-size: 12px;
}

.settings-save:disabled {
  cursor: default;
  opacity: 0.7;
}

.settings-editor {
  width: 100%;
  min-height: 220px;
  padding: 12px;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  background: #f9fbfd;
  color: var(--text);
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12px;
  line-height: 1.6;
}

.settings-editor--json {
  min-height: 260px;
}

.settings-status {
  padding: 10px 12px;
  border: 1px solid #cfe0cd;
  border-radius: 8px;
  background: #f4fbf2;
  color: #486246;
  font-size: 12px;
}

.settings-status.is-error {
  border-color: #e8baba;
  background: #fff0f0;
  color: #9f3434;
}

.date-pill {
  width: max-content;
  margin: 8px auto 20px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--bg-secondary);
  color: var(--faint);
  font-size: 11px;
}

.message {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.message--user {
  flex-direction: row-reverse;
  padding-left: 40px;
}

.message--assistant {
  padding-right: 40px;
}

.message__body {
  min-width: 0;
  flex: 1;
  display: grid;
  gap: 6px;
}

.bubble {
  width: fit-content;
  max-width: 100%;
  padding: 10px 14px;
  border-radius: 2px 14px 14px 14px;
  line-height: 1.7;
  font-size: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}

.message--assistant .bubble {
  background: var(--assistant-bubble);
  color: var(--assistant-text);
}

.message--user .bubble {
  margin-left: auto;
  background: var(--user-bubble);
  color: var(--user-text);
  border-radius: 14px 2px 14px 14px;
}

.bubble--error {
  border: 1px solid #e8baba;
  background: #fff0f0 !important;
  color: #9f3434 !important;
}

.message__time {
  padding: 0 4px;
  color: var(--faint);
  font-size: 11px;
}

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

.collapsible {
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
  font-size: 13px;
}

.collapsible summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--panel-bg);
  color: var(--muted);
  cursor: pointer;
  list-style: none;
}

.collapsible summary::-webkit-details-marker {
  display: none;
}

.collapsible summary::after {
  content: "⌄";
  margin-left: auto;
  color: var(--faint);
  transition: transform 0.2s ease;
}

.collapsible[open] summary::after {
  transform: rotate(180deg);
}

.collapsible__content {
  max-height: 280px;
  overflow: auto;
  padding: 10px 12px;
  color: var(--muted);
  line-height: 1.6;
  white-space: pre-wrap;
}

.panel--thinking {
  --panel-bg: var(--thinking-bg);
  --panel-border: var(--thinking-border);
}

.panel--tool {
  --panel-bg: var(--tool-bg);
  --panel-border: var(--tool-border);
}

.panel--tool-running {
  --panel-bg: #f4f7fa;
  --panel-border: #b8cadb;
}

.panel--tool-error {
  --panel-bg: #fff0f0;
  --panel-border: #e8baba;
}

.panel--memory {
  --panel-bg: var(--memory-bg);
  --panel-border: var(--memory-border);
}

pre {
  margin: 8px 0;
  padding: 8px;
  overflow-x: auto;
  border-radius: 6px;
  background: var(--bg-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 11px;
  font-family: "JetBrains Mono", Consolas, monospace;
}

.context-warning {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 12px 8px;
  padding: 8px 12px;
  border: 1px solid #f0d8c0;
  border-radius: 8px;
  background: #fff8f0;
  color: #8b6914;
  font-size: 12px;
}

.context-warning p {
  flex: 1;
  margin: 0;
}

.context-warning button {
  border: 0;
  border-radius: 6px;
  padding: 4px 10px;
  background: var(--assistant-accent);
  color: #fff;
}

.composer {
  flex: 0 0 auto;
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 10px 12px;
  padding-bottom: max(10px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.attach-button,
.send-button {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 10px;
}

.attach-button {
  border: 1px solid var(--input-border);
  background: var(--bg);
  color: var(--muted);
  font-size: 18px;
}

.send-button {
  background: var(--assistant-accent);
  color: #fff;
  box-shadow: 0 2px 8px rgb(122 155 181 / 30%);
}

.send-button:disabled {
  opacity: 0.55;
  cursor: wait;
}

textarea {
  flex: 1;
  min-height: 38px;
  max-height: 120px;
  resize: none;
  border: 1px solid var(--input-border);
  border-radius: 12px;
  outline: 0;
  padding: 9px 14px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

.sidebar {
  position: fixed;
  z-index: 50;
  inset: 0 auto 0 0;
  width: 280px;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  box-shadow: 4px 0 20px rgb(0 0 0 / 10%);
  transform: translateX(-100%);
  transition: transform 0.24s ease;
}

.sidebar.is-open {
  transform: translateX(0);
}

.overlay {
  position: fixed;
  z-index: 40;
  inset: 0;
  background: rgb(44 62 80 / 30%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s ease;
}

.overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 16px 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar__header h2,
.sidebar__header p {
  margin: 0;
}

.sidebar__header h2 {
  font-size: 16px;
}

.sidebar__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.icon-button {
  width: 32px;
  height: 32px;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--muted);
  font-size: 18px;
}

.thread-list {
  height: 100%;
  overflow: auto;
  padding: 8px;
}

.thread-item {
  width: 100%;
  display: block;
  margin-bottom: 2px;
  padding: 12px;
  border: 0;
  border-left: 3px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.thread-item.is-active {
  border-left-color: var(--assistant-accent);
  background: var(--bg-secondary);
  font-weight: 600;
}

.thread-item strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}

.thread-item span {
  display: block;
  margin-top: 4px;
  color: var(--faint);
  font-size: 11px;
}

.sidebar__threads {
  flex: 0 0 65%;
  min-height: 0;
  border-bottom: 1px solid var(--border);
}

.sidebar__features {
  flex: 0 0 35%;
  min-height: 0;
  padding: 16px;
}

.sidebar__features-inner {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.feature-list {
  display: grid;
  gap: 6px;
}

.feature-entry {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--muted);
  text-align: left;
  padding: 10px 2px;
  font-size: 15px;
  line-height: 1.35;
  cursor: pointer;
}

.feature-entry.is-active {
  color: var(--assistant-text);
  font-weight: 600;
}

.feature-entry--danger {
  margin-top: auto;
  color: #8d7b75;
}

@media (min-width: 760px) {
  .shell {
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
  }
}