/* ============================================================
   Gemini 主题 — 还原 gemini.google.com 当前界面
   浅色默认:白画布 + 底部蓝色辉光 + 居中胶囊输入框 + 四色星标头像
   深色: #131314 画布(沿用官方截图配色)
   默认展开侧栏(LAYOUT.sidebar=open)
   ============================================================ */
body.theme-gemini {
  --font-body: "Google Sans", "Product Sans", Roboto, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: inherit;

  --bg-main: #ffffff;
  --bg-sidebar: #f0f4f9;
  --bg-panel: #ffffff;
  --bg-menu: #ffffff;
  --surface: #ffffff;
  --fg: #1f1f1f;
  --fg-dim: #5f6368;
  --border: #e3e3e3;
  --border-strong: #c9cdd2;
  --accent: #1a73e8;

  --sidebar-w: 288px;
  --chat-w: 760px;

  --item-hover: #eaedf1;
  --item-active: #dfe3e8;
  --radius-btn: 22px;
  --radius-item: 22px;

  --newchat-fg: #1f1f1f;
  --newchat-bg: transparent;
  --newchat-bg-hover: #eaedf1;
  --newchat-border: none;

  --avatar-ai-bg: linear-gradient(135deg, #4285f4, #9b72cb 55%, #d96570);
  --avatar-ai-fg: #ffffff;
  --avatar-radius: 50%;

  --user-bubble: #f0f4f9;
  --user-bubble-fg: #1f1f1f;
  --user-bubble-radius: 18px 4px 18px 18px;
  --user-bubble-pad: 10px 16px;

  --composer-bg: #ffffff;
  --composer-border: 1px solid #dfe3e8;
  --composer-radius: 28px;
  --composer-shadow: 0 2px 12px rgba(60, 64, 67, .14);
  --composer-focus: #a8c7fa;

  --send-bg: transparent;
  --send-fg: #1f1f1f;
  --send-radius: 50%;

  --search-bg: #eaedf1;

  --code-bg: #f8f9fa;
  --code-bar-bg: #eef0f2;
  --code-inline-bg: #eef0f2;
  --scrollbar: #c9ccd1;
  --user-avatar: #1a73e8;
}

html[data-theme="dark"] body.theme-gemini {
  --bg-main: #131314;
  --bg-sidebar: #1e1f20;
  --bg-panel: #1e1f20;
  --bg-menu: #28292a;
  --surface: #1e1f20;
  --fg: #e3e3e3;
  --fg-dim: #9aa0a6;
  --border: #37393b;
  --border-strong: #56585b;
  --accent: #8ab4f8;

  --item-hover: #28292a;
  --item-active: #37393b;
  --newchat-bg-hover: #45474a;

  --avatar-ai-bg: linear-gradient(135deg, #4285f4, #9b72cb 55%, #d96570);
  --avatar-ai-fg: #ffffff;

  --user-bubble: #333537;
  --user-bubble-fg: #e3e3e3;

  --composer-bg: #1e1f20;
  --composer-border: 1px solid #3c3e40;
  --composer-shadow: none;
  --composer-focus: #55575a;

  --send-fg: #c4c7c5;
  --search-bg: rgba(255, 255, 255, .06);
  --code-bg: #1b1c1d;
  --code-bar-bg: #242526;
  --code-inline-bg: rgba(255, 255, 255, .1);
  --scrollbar: rgba(255, 255, 255, .16);
  --user-avatar: #8ab4f8;
}

body.theme-gemini { font-family: var(--font-body); background: var(--bg-main); color: var(--fg); -webkit-font-smoothing: antialiased; }

/* 底部中央蓝色辉光(官方空状态氛围光) */
body.theme-gemini .main {
  background:
    radial-gradient(55% 42% at 50% 80%, rgba(120, 160, 255, .20), transparent 72%),
    var(--bg-main);
}
body.theme-gemini .gemini-upstream-notice {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin: 8px 18px 0;
  padding: 9px 14px;
  border: 1px solid #d5a44a;
  border-radius: 12px;
  background: #fff6dc;
  color: #704700;
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
}
body.theme-gemini .gemini-upstream-notice strong { font-weight: 650; }
body.theme-gemini .gemini-search-boundary {
  margin: 0 0 10px;
  padding: 8px 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--border));
  border-radius: 10px;
  color: var(--fg-dim);
  background: color-mix(in srgb, var(--accent) 6%, var(--surface));
  font-size: 12px;
  line-height: 1.45;
}
html[data-theme="dark"] body.theme-gemini .main {
  background:
    radial-gradient(55% 42% at 50% 78%, rgba(60, 90, 170, .34), transparent 72%),
    #131314;
}
html[data-theme="dark"] body.theme-gemini .gemini-upstream-notice {
  border-color: #8d6d36;
  background: #3d301b;
  color: #f5d590;
}

/* ---- 顶栏:汉堡键(展开侧栏) + Gemini 彩色字标 ---- */
body.theme-gemini .topbar { gap: 6px; }
body.theme-gemini .topbar .model-picker { display: none; }
body.theme-gemini .topbar-wordmark { display: flex; align-items: center; gap: 8px; font-size: 22px; font-weight: 500; color: var(--fg); letter-spacing: .2px; }
body.theme-gemini .topbar-wordmark .wm-logo svg,
body.theme-gemini .topbar-wordmark .wm-logo img.gemini-logo-img {
  width: 22px;
  height: 22px;
  display: block;
}
/* base.css 为其他主题保留 display:none；Gemini 的会话标题由 app.js
 * 绑定重命名动作，因此在真实会话中必须恢复为可见按钮。 */
body.theme-gemini .session-title-bar:not(.hidden) {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  max-width: min(360px, 34vw);
  padding: 6px 10px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--fg-dim);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
body.theme-gemini .session-title-bar:not(.hidden):hover,
body.theme-gemini .session-title-bar:not(.hidden):focus-visible {
  background: var(--item-hover);
  color: var(--fg);
}
body.theme-gemini .composer-picker { display: block; }
body.theme-gemini .composer-model-btn {
  color: var(--fg-dim); font-size: 13px; padding: 6px 10px; border-radius: 999px;
  display: inline-flex; align-items: center; gap: 7px;
}
body.theme-gemini .composer-model-btn:hover { background: var(--item-hover); color: var(--fg); }
body.theme-gemini .composer-model-btn .picker-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: linear-gradient(135deg, #4285f4, #9b72cb 55%, #d96570);
}

/* ---- 侧边栏 ---- */
body.theme-gemini .sidebar { background: var(--bg-sidebar); border-right: none; }
body.theme-gemini .brand-icon { color: var(--accent); }
body.theme-gemini .brand-name { font-weight: 500; font-size: 17px; color: var(--fg); }
body.theme-gemini .new-chat-btn {
  width: fit-content; padding: 9px 18px 9px 14px; font-size: 13.5px;
  border-radius: 999px; color: var(--newchat-fg); gap: 8px;
}
body.theme-gemini .new-chat-btn:hover { background: var(--newchat-bg-hover); }
body.theme-gemini .snav-item { color: var(--fg); }
body.theme-gemini .snav-item:hover { background: var(--item-hover); }
body.theme-gemini .snav-item[data-action="geminiSpark"] {
  gap: 8px;
}
body.theme-gemini .snav-item[data-action="geminiSpark"] > span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
}
/* 官方侧栏显示“Spark Beta 版”；用视觉徽标补齐现有按钮的状态，不改变其可访问名称。 */
body.theme-gemini .snav-item[data-action="geminiSpark"] > span::after {
  content: 'Beta 版';
  color: var(--fg-dim);
  font-size: 10px;
  font-weight: 500;
  white-space: nowrap;
}
body.theme-gemini .snav-item[data-action="geminiSpark"][aria-pressed="true"] {
  background: #e8f0fe;
  color: #0b57d0;
  font-weight: 600;
}
body.theme-gemini .snav-item[data-action="geminiSpark"][aria-pressed="true"] > span::after { color: #174ea6; }
/* 这些入口在当前 shared app.js 中打开的是本地工作区或本地降级。
 * 徽标只增加视觉说明，不改变按钮的可访问名称，也不把本地能力宣称为 Google 云端能力。 */
body.theme-gemini .snav-item[data-action="geminiVideo"] > span::after,
body.theme-gemini .snav-item[data-action="geminiLibrary"] > span::after,
body.theme-gemini .snav-item[data-action="geminiGem"] > span::after,
body.theme-gemini .gemini-section-toggle > span:first-child::after {
  content: '本地';
  display: inline-flex;
  align-items: center;
  min-height: 17px;
  padding: 1px 5px;
  border: 1px solid color-mix(in srgb, var(--fg-dim) 28%, transparent);
  border-radius: 999px;
  color: var(--fg-dim);
  font-size: 10px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
}
body.theme-gemini .snav-item[data-action="geminiVideo"] > span,
body.theme-gemini .snav-item[data-action="geminiLibrary"] > span,
body.theme-gemini .snav-item[data-action="geminiGem"] > span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
}
body.theme-gemini .sidebar-search { background: var(--search-bg); }
body.theme-gemini .sidebar-search:hover, body.theme-gemini .sidebar-search:focus-within { background: var(--item-hover); }
body.theme-gemini .gemini-notebook-section {
  margin: 2px 10px 8px;
  border-top: 1px solid color-mix(in srgb, var(--fg-dim) 14%, transparent);
  padding-top: 4px;
}
body.theme-gemini .gemini-section-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 38px;
  padding: 0 12px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--fg);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
body.theme-gemini .gemini-section-toggle:hover,
body.theme-gemini .gemini-section-toggle:focus-visible { background: var(--item-hover); outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent); outline-offset: -2px; }
body.theme-gemini .gemini-section-toggle > span:first-child { display: inline-flex; align-items: center; gap: 8px; }
body.theme-gemini .gemini-section-toggle svg { width: 15px; height: 15px; color: var(--fg-dim); }
body.theme-gemini .gemini-section-chevron { color: var(--fg-dim); font-size: 17px; }
body.theme-gemini .gemini-notebook-items { display: grid; gap: 1px; padding: 2px 0 0 10px; }
body.theme-gemini .gemini-notebook-item { min-height: 34px; padding-left: 14px; font-size: 12px; }
body.theme-gemini .gemini-notebook-plus { color: var(--accent); font-size: 17px; line-height: 1; }
body.theme-gemini .gemini-official-link { white-space: nowrap; text-decoration: none; }

/* 收起侧栏时隐藏个人中心，仅在侧边栏展开时随侧边栏一起显示 */
body.sidebar-collapsed.theme-gemini .sidebar-footer {
  display: none !important;
}

/* ---- 官方 Gemini 的顶栏、状态和菜单 affordance ---- */
body.theme-gemini .gemini-settings-top-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 36px;
  padding: 6px 9px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--fg-dim);
  cursor: pointer;
}
body.theme-gemini .gemini-settings-top-btn:hover,
body.theme-gemini .gemini-settings-top-btn[aria-expanded="true"] {
  background: var(--item-hover);
  color: var(--fg);
}
body.theme-gemini .gemini-settings-menu,
body.theme-gemini .add-menu.gemini-add-menu,
body.theme-gemini .add-submenu,
body.theme-gemini .model-menu,
body.theme-gemini .session-context-menu,
body.theme-gemini .message-context-menu {
  border-radius: 16px;
  box-shadow: 0 10px 32px rgba(60, 64, 67, .18);
}
body.theme-gemini .gemini-settings-menu,
body.theme-gemini .add-menu.gemini-add-menu,
body.theme-gemini .add-submenu,
body.theme-gemini .model-menu {
  border: 1px solid var(--border-strong);
  color: var(--fg);
  background: var(--bg-menu);
  z-index: 180;
}
body.theme-gemini .gemini-settings-menu button,
body.theme-gemini .add-menu.gemini-add-menu .add-menu-item,
body.theme-gemini .add-submenu-item,
body.theme-gemini .model-menu .model-item {
  min-height: 40px;
}
body.theme-gemini .gemini-add-menu .add-menu-label {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}
body.theme-gemini .gemini-add-menu .add-menu-item,
body.theme-gemini .add-submenu .add-submenu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 11px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 13px;
  line-height: 1.25;
  text-align: left;
  cursor: pointer;
}
body.theme-gemini .gemini-add-menu .add-menu-icon,
body.theme-gemini .add-submenu .add-menu-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  min-width: 20px;
  color: var(--fg-dim);
  font-size: 16px;
}
body.theme-gemini .gemini-add-menu .add-menu-right,
body.theme-gemini .add-submenu .add-menu-right {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  margin-left: auto;
  color: var(--fg-dim);
}
body.theme-gemini .gemini-add-menu .add-menu-divider,
body.theme-gemini .add-submenu .add-menu-divider {
  height: 1px;
  margin: 6px 3px;
  background: var(--border);
}
body.theme-gemini .gemini-add-menu .add-menu-label small {
  color: var(--fg-dim);
  font-size: 11px;
  line-height: 1.3;
}
body.theme-gemini .gemini-add-menu .add-menu-item[aria-haspopup="menu"] .add-menu-right {
  font-size: 17px;
}
body.theme-gemini .gemini-add-menu,
body.theme-gemini .add-submenu {
  min-width: min(280px, calc(100vw - 16px));
  max-height: min(70vh, 520px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}
/* Drive 项是“打开官方页面/本地上传”的降级入口；生成入口使用管理员配置的
 * 本地上游。视觉副文案和弹窗内的详细提示共同组成诚实的状态反馈。 */
body.theme-gemini .gemini-add-menu [data-gemini-add="gemini-drive"] .add-menu-label::after {
  content: '未连接 Google Drive';
  margin-top: 2px;
  color: #a15c00;
  font-size: 10px;
  line-height: 1.3;
}
body.theme-gemini .gemini-add-menu [data-gemini-add="gemini-image"] .add-menu-label::after,
body.theme-gemini .gemini-add-menu [data-gemini-add="gemini-video"] .add-menu-label::after {
  content: '使用管理员配置的本地上游';
  margin-top: 2px;
  color: var(--fg-dim);
  font-size: 10px;
  line-height: 1.3;
}
html[data-theme="dark"] body.theme-gemini .gemini-add-menu [data-gemini-add="gemini-drive"] .add-menu-label::after {
  color: #f5c26b;
}
body.theme-gemini #attach-btn[aria-expanded="true"],
body.theme-gemini .composer-model-btn[aria-expanded="true"] {
  background: var(--item-hover);
  color: var(--fg);
}
/* Claude/Grok 的菜单基础规则是 provider-scoped 的；Gemini 必须自己提供
 * 会话/消息菜单的布局，否则菜单虽然被 JS 创建，却没有背景、定位和可点击区域。 */
body.theme-gemini .session-context-menu,
body.theme-gemini .message-context-menu {
  position: fixed;
  z-index: 180;
  min-width: 190px;
  max-width: min(300px, calc(100vw - 16px));
  max-height: min(70vh, 520px);
  overflow-y: auto;
  padding: 6px;
  background: var(--bg-menu);
  color: var(--fg);
  border: 1px solid var(--border-strong);
  overscroll-behavior: contain;
}
body.theme-gemini .session-context-menu button,
body.theme-gemini .message-context-menu button {
  display: block;
  width: 100%;
  padding: 9px 11px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: inherit;
  text-align: left;
  font: inherit;
  font-size: 13px;
  line-height: 1.35;
  cursor: pointer;
}
body.theme-gemini .session-context-menu button:hover,
body.theme-gemini .session-context-menu button:focus-visible,
body.theme-gemini .message-context-menu button:hover,
body.theme-gemini .message-context-menu button:focus-visible,
body.theme-gemini .gemini-settings-menu button:focus-visible,
body.theme-gemini .add-menu.gemini-add-menu .add-menu-item:focus-visible,
body.theme-gemini .add-submenu-item:focus-visible,
body.theme-gemini .model-menu .model-item:focus-visible {
  background: var(--item-hover);
  outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: -2px;
}
body.theme-gemini .session-context-menu button.danger,
body.theme-gemini .message-context-menu button.danger { color: #c0392b; }
/* 动态菜单的 ARIA 语义由 app.js 负责；这里确保键盘焦点在浅色、深色和
 * 高对比度模式下都不会被圆角菜单吞掉。CSS 不把缺少的键盘事件伪装成已实现。 */
body.theme-gemini :where(.gemini-add-menu, .add-submenu, .gemini-settings-menu, .session-context-menu, .message-context-menu)
  :where([role="menuitem"], [role="menuitemcheckbox"], [role="menuitemradio"]):focus-visible {
  background: var(--item-hover);
  color: var(--fg);
  outline: 2px solid color-mix(in srgb, var(--accent) 60%, transparent);
  outline-offset: -2px;
}
body.theme-gemini .session-context-menu .session-menu-separator,
body.theme-gemini .message-context-menu .session-menu-separator {
  height: 1px;
  margin: 6px 3px;
  background: var(--border);
}
body.theme-gemini .gemini-settings-menu {
  max-height: min(78vh, 560px);
  overscroll-behavior: contain;
  scrollbar-width: thin;
}
body.theme-gemini .gemini-settings-menu button,
body.theme-gemini .add-menu.gemini-add-menu .add-menu-item,
body.theme-gemini .add-submenu-item,
body.theme-gemini .model-menu .model-item,
body.theme-gemini .session-context-menu button,
body.theme-gemini .message-context-menu button {
  min-height: 38px;
}
body.theme-gemini .gemini-add-menu .add-menu-item[role="menuitemcheckbox"][aria-checked="true"],
body.theme-gemini .gemini-add-menu .add-menu-item.active {
  background: #e8f0fe;
  color: #0b57d0;
}
body.theme-gemini .gemini-add-menu .add-menu-item:disabled,
body.theme-gemini .gemini-add-menu .add-menu-item[aria-disabled="true"],
body.theme-gemini .model-menu .model-item:disabled,
body.theme-gemini .model-menu .model-item[aria-disabled="true"] {
  color: var(--fg-dim);
  cursor: not-allowed;
  opacity: .62;
}
body.theme-gemini .gemini-add-menu .add-menu-item:disabled:hover,
body.theme-gemini .gemini-add-menu .add-menu-item[aria-disabled="true"]:hover,
body.theme-gemini .model-menu .model-item:disabled:hover,
body.theme-gemini .model-menu .model-item[aria-disabled="true"]:hover {
  background: transparent;
}
body.theme-gemini .gemini-add-menu .add-menu-item[role="menuitemcheckbox"][aria-checked="true"] .add-menu-icon,
body.theme-gemini .gemini-add-menu .add-menu-item.active .add-menu-icon { color: #0b57d0; }
body.theme-gemini .model-menu .model-item[role="menuitemcheckbox"][aria-checked="true"],
body.theme-gemini .model-menu .model-item.model-thinking-item[aria-checked="true"] {
  background: #e8f0fe;
  color: #0b57d0;
}
body.theme-gemini .model-menu .model-item[role="menuitemcheckbox"][aria-checked="true"] .mi-check { color: #0b57d0; }
body.theme-gemini .model-menu .model-item {
  padding: 8px 14px;
}
body.theme-gemini .model-menu .model-item .mi-icon {
  display: none;
}
body.theme-gemini .model-menu .model-item .mi-body {
  gap: 3px;
}
body.theme-gemini .model-menu .model-item .mi-label {
  font-size: 14px;
  font-weight: 500;
}
body.theme-gemini .model-menu .model-item .mi-sub {
  font-size: 12px;
  color: var(--fg-dim);
}
body.theme-gemini .model-menu .model-menu-divider { height: 1px; margin: 6px 3px; background: var(--border); }
body.theme-gemini .composer .mic-btn[aria-pressed="true"],
body.theme-gemini .composer .mic-btn.recording,
body.theme-gemini .composer .voice-mode-btn.active {
  background: #e8f0fe;
  color: #0b57d0;
}
body.theme-gemini .composer .send-btn:disabled {
  color: var(--fg-dim);
  opacity: .48;
  cursor: not-allowed;
}
body.theme-gemini .composer .send-btn:disabled:hover { background: transparent; }

/* ---- 空对话:问候语 + 胶囊输入框垂直居中 ---- */
body.empty-chat.theme-gemini .main::before { content: ''; flex: 1 1 0; }
body.empty-chat.theme-gemini .main::after  { content: ''; flex: 1.25 1 0; }
body.empty-chat.theme-gemini .chat-scroll  { flex: 0 0 auto; overflow: visible; }
body.empty-chat.theme-gemini .welcome { padding: 0 24px 30px; }
body.theme-gemini .welcome-icon { display: none; }
body.theme-gemini .welcome-title { font-size: 34px; font-weight: 400; color: var(--fg); letter-spacing: .3px; text-align: center; }
body.theme-gemini .welcome-sub { display: none; }

/* ---- 消息:不显示左右头像;用户深灰蓝气泡右对齐 ---- */
body.theme-gemini .msg-avatar { display: none; }
body.theme-gemini .msg-user { flex-direction: row-reverse; }
body.theme-gemini .msg-user .msg-body { display: flex; flex-direction: column; align-items: flex-end; }
body.theme-gemini .msg-user .msg-content { max-width: 72%; }
body.theme-gemini .msg-assistant .msg-content { font-size: 16px; line-height: 1.7; color: var(--fg); }

/* ---- 输入框:单行胶囊 [+] [文本] [模型芯片] [麦克风] [发送] ---- */
body.theme-gemini .composer {
  max-width: var(--chat-w); padding: 7px 8px 7px 8px;
  border: var(--composer-border); border-radius: var(--composer-radius);
  box-shadow: var(--composer-shadow); background: var(--composer-bg);
}
body.theme-gemini .composer:focus-within { border-color: var(--composer-focus); box-shadow: 0 2px 14px rgba(60, 64, 67, .18); }
body.theme-gemini .composer-grid {
  display: grid; align-items: center; gap: 6px;
  grid-template-columns: auto 1fr auto auto auto;
  grid-template-areas: "attach text picker mic send";
}
body.theme-gemini .composer-grid .attach-btn { grid-area: attach; color: var(--fg-dim); }
body.theme-gemini .composer-grid textarea { grid-area: text; padding: 9px 4px; font-size: 15px; }
body.theme-gemini .composer-grid .composer-picker { grid-area: picker; }
body.theme-gemini .composer-grid .mic-area { grid-area: mic; }
body.theme-gemini .composer-grid #send-btn { grid-area: send; }
body.theme-gemini .composer-grid #stop-btn { grid-area: send; }
body.theme-gemini .send-btn { width: 40px; height: 40px; }
body.theme-gemini .send-btn:hover { background: var(--item-hover); opacity: 1; }
body.theme-gemini .send-btn svg { stroke: var(--send-fg); width: 20px; height: 20px; }
body.theme-gemini .stop-btn svg { fill: var(--send-fg); }
body.theme-gemini .attach-btn, body.theme-gemini .mic-btn { color: var(--fg-dim); }
body.theme-gemini .attach-btn:hover, body.theme-gemini .mic-btn:hover { background: var(--item-hover); color: var(--fg); }

/* ---- 弹层 ---- */
body.theme-gemini .login-card button:not(.auth-tab), body.theme-gemini .primary-btn { background: #0b57d0; border-radius: 22px; color: #fff; }
body.theme-gemini .modal-tabs .tab.active { color: var(--accent); border-bottom-color: var(--accent); }
body.theme-gemini .cursor { background: var(--accent); }
body.theme-gemini .user-menu, body.theme-gemini .model-menu { border-radius: 16px; }
body.theme-gemini #settings-status { color: #2a9d3f; }
body.theme-gemini .gemini-library-list { gap: 12px; }
body.theme-gemini .gemini-library-row { align-items: center; gap: 12px; min-height: 76px; padding: 10px 14px; border-bottom: 1px solid var(--border); }
body.theme-gemini .gemini-library-row:hover { background: var(--item-hover); }
body.theme-gemini .gemini-library-asset { width: 84px; min-width: 84px; height: 64px; display: flex; align-items: center; justify-content: center; overflow: hidden; border-radius: 10px; background: var(--item-hover); }
body.theme-gemini .gemini-library-preview { display: block; width: 100%; height: 100%; object-fit: cover; }
body.theme-gemini .gemini-library-asset audio { width: 78px; }
body.theme-gemini .gemini-library-asset video { width: 100%; height: 100%; object-fit: cover; }
body.theme-gemini .gemini-library-file-icon { font-size: 28px; color: var(--fg-dim); }
body.theme-gemini .gemini-library-actions { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; }
body.theme-gemini .gemini-library-actions .btn-secondary { padding: 7px 12px; border-radius: 999px; font-size: 12px; }
body.theme-gemini .share-btn:not(.hidden) {
  align-self: center;
  margin: 4px auto 0;
  padding: 7px 13px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--fg-dim);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}
body.theme-gemini .share-btn:not(.hidden):hover,
body.theme-gemini .share-btn:not(.hidden):focus-visible { background: var(--item-hover); color: var(--fg); }
body.theme-gemini .gemini-notebook-modal { width: min(700px, 94vw); max-height: min(760px, 92vh); overflow-y: auto; }
body.theme-gemini .gemini-notebook-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 14px; }
body.theme-gemini .gemini-notebook-actions .btn-secondary,
body.theme-gemini .gemini-notebook-actions .primary-btn { padding: 8px 13px; border-radius: 999px; }
body.theme-gemini .gemini-notebook-list { display: grid; gap: 10px; }
body.theme-gemini .gemini-notebook-row { align-items: flex-start; }
body.theme-gemini .gemini-notebook-row .settings-action-stack { flex-wrap: wrap; justify-content: flex-end; }

/* 响应式 */
@media (max-width: 768px) {
  body.theme-gemini .welcome-title { font-size: 28px; }
  body.empty-chat.theme-gemini .main::before, body.empty-chat.theme-gemini .main::after { flex: .6 1 0; }
  body.theme-gemini .snav-item[data-action="geminiSpark"] > span::after { font-size: 9px; }
  body.theme-gemini .snav-item[data-action="geminiVideo"] > span::after,
  body.theme-gemini .snav-item[data-action="geminiLibrary"] > span::after,
  body.theme-gemini .snav-item[data-action="geminiGem"] > span::after,
  body.theme-gemini .gemini-section-toggle > span:first-child::after { font-size: 9px; }
  body.theme-gemini .session-title-bar:not(.hidden) { max-width: 42vw; }
  body.theme-gemini .gemini-upstream-notice { align-items: flex-start; flex-direction: column; gap: 2px; text-align: left; }
  body.theme-gemini .gemini-library-row { align-items: flex-start; flex-wrap: wrap; }
  body.theme-gemini .gemini-library-actions { width: calc(100% - 96px); margin-left: 96px; }
  body.theme-gemini .gemini-settings-menu,
  body.theme-gemini .add-menu.gemini-add-menu,
  body.theme-gemini .add-submenu,
  body.theme-gemini .model-menu,
  body.theme-gemini .session-context-menu,
  body.theme-gemini .message-context-menu {
    max-width: calc(100vw - 16px);
  }
  body.theme-gemini .composer-model-btn { max-width: 130px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

}

@media (forced-colors: active) {
  body.theme-gemini .main,
  body.theme-gemini .sidebar,
  body.theme-gemini .topbar,
  body.theme-gemini .composer,
  body.theme-gemini .gemini-settings-menu,
  body.theme-gemini .add-menu.gemini-add-menu,
  body.theme-gemini .add-submenu,
  body.theme-gemini .model-menu,
  body.theme-gemini .session-context-menu,
  body.theme-gemini .message-context-menu,
  body.theme-gemini .gemini-upstream-notice {
    background: Canvas;
    color: CanvasText;
    border-color: CanvasText;
    box-shadow: none;
  }
  body.theme-gemini .gemini-add-menu .add-menu-label small,
  body.theme-gemini .gemini-add-menu [data-gemini-add="gemini-drive"] .add-menu-label::after,
  body.theme-gemini .gemini-library-file-icon { color: GrayText; }
  body.theme-gemini .gemini-settings-menu button:hover,
  body.theme-gemini .gemini-settings-menu button:focus-visible,
  body.theme-gemini .add-menu.gemini-add-menu .add-menu-item:hover,
  body.theme-gemini .add-menu.gemini-add-menu .add-menu-item:focus-visible,
  body.theme-gemini .add-submenu-item:hover,
  body.theme-gemini .add-submenu-item:focus-visible,
  body.theme-gemini .model-menu .model-item:hover,
  body.theme-gemini .model-menu .model-item:focus-visible,
  body.theme-gemini .session-context-menu button:focus-visible,
  body.theme-gemini .message-context-menu button:focus-visible {
    background: Highlight;
    color: HighlightText;
    outline: 2px solid Highlight;
    outline-offset: -2px;
  }
}

@media (prefers-contrast: more) {
  body.theme-gemini {
    --fg-dim: var(--fg);
    --border: var(--fg);
    --border-strong: var(--fg);
  }
  body.theme-gemini .gemini-settings-menu,
  body.theme-gemini .add-menu.gemini-add-menu,
  body.theme-gemini .add-submenu,
  body.theme-gemini .model-menu,
  body.theme-gemini .session-context-menu,
  body.theme-gemini .message-context-menu,
  body.theme-gemini .composer { border-color: currentColor; }
  body.theme-gemini :where(button, a, input, textarea):focus-visible {
    outline: 2px solid #fff !important;
    outline-offset: 2px;
    box-shadow: 0 0 0 6px #0b3d91 !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.theme-gemini *,
  body.theme-gemini *::before,
  body.theme-gemini *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}

/* Gemini Spark 本地工作区 */
body.theme-gemini .gemini-spark-workspace-modal { width: min(760px, calc(100vw - 24px)); max-width: 760px; }
body.theme-gemini .gemini-spark-boundary { margin: 0 20px 12px; padding: 10px 12px; border: 1px solid color-mix(in srgb, #7c5cff 26%, var(--border)); border-radius: 10px; color: var(--fg-dim); font-size: 12px; line-height: 1.5; background: color-mix(in srgb, #7c5cff 7%, var(--surface)); }
body.theme-gemini .gemini-spark-layout { display: grid; grid-template-columns: 150px minmax(0, 1fr); min-height: 360px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
body.theme-gemini .gemini-spark-tabs { display: flex; flex-direction: column; gap: 3px; padding: 12px 8px; border-right: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 82%, #7c5cff 18%); }
body.theme-gemini .gemini-spark-tabs button { border: 0; border-radius: 8px; padding: 9px 10px; text-align: left; background: transparent; color: var(--fg-dim); cursor: pointer; font: inherit; }
body.theme-gemini .gemini-spark-tabs button:hover,
body.theme-gemini .gemini-spark-tabs button.active,
body.theme-gemini .gemini-spark-tabs button[aria-selected="true"] {
  background: color-mix(in srgb, #7c5cff 13%, var(--surface));
  color: var(--fg);
  font-weight: 600;
}
body.theme-gemini .gemini-spark-tabs button:focus-visible,
body.theme-gemini .gemini-spark-content :where(button, a, input, textarea, select):focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 60%, transparent);
  outline-offset: 2px;
}
body.theme-gemini .gemini-spark-content { padding: 18px; overflow: auto; }
body.theme-gemini .gemini-spark-content h3 { margin: 0 0 10px; }
body.theme-gemini .gemini-spark-hero { padding: 16px; margin-bottom: 18px; border-radius: 12px; background: linear-gradient(135deg, color-mix(in srgb, #7c5cff 15%, var(--surface)), var(--surface)); }
body.theme-gemini .gemini-spark-hero h3 { margin: 7px 0 4px; }
body.theme-gemini .gemini-spark-hero p, body.theme-gemini .gemini-spark-content .settings-lead { color: var(--fg-dim); line-height: 1.55; font-size: 13px; }
body.theme-gemini .gemini-spark-beta { font-size: 10px; letter-spacing: .08em; color: #6b4cc3; font-weight: 700; }
body.theme-gemini .gemini-spark-task-list, body.theme-gemini .gemini-spark-suggestions { display: grid; gap: 8px; margin: 8px 0 18px; }
body.theme-gemini .gemini-spark-task-card { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 11px 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
body.theme-gemini .gemini-spark-task-card strong, body.theme-gemini .gemini-spark-task-card small { display: block; }
body.theme-gemini .gemini-spark-task-card small { margin-top: 4px; color: var(--fg-dim); line-height: 1.4; }
body.theme-gemini .gemini-spark-task-actions { display: flex; gap: 6px; flex: 0 0 auto; }
body.theme-gemini .gemini-spark-task-actions button, body.theme-gemini .gemini-spark-suggestions button { border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; color: var(--fg); background: var(--surface); cursor: pointer; font: inherit; }
body.theme-gemini .gemini-spark-suggestions button { text-align: left; }
body.theme-gemini .gemini-spark-suggestions strong, body.theme-gemini .gemini-spark-suggestions small { display: block; }
body.theme-gemini .gemini-spark-suggestions small { margin-top: 3px; color: var(--fg-dim); }
body.theme-gemini .gemini-spark-content .btn-secondary,
body.theme-gemini .gemini-spark-content .primary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 36px; margin: 4px 6px 4px 0; }
body.theme-gemini .gemini-spark-content :where(button, a)[aria-pressed="true"] {
  background: #e8f0fe;
  color: #0b57d0;
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}
body.theme-gemini .gemini-spark-workspace-modal .modal-footer { flex-wrap: wrap; }
@media (max-width: 560px) {
  body.theme-gemini .gemini-spark-layout { grid-template-columns: 1fr; }
  body.theme-gemini .gemini-spark-tabs { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--border); }
  body.theme-gemini .gemini-spark-tabs button { white-space: nowrap; }
  body.theme-gemini .gemini-spark-task-card { align-items: flex-start; flex-direction: column; }
}

/* Provider adapter layout contract. Keep the legacy theme tokens above while
 * exposing the canonical dimensions from one provider-scoped source. */
:root {
  --gemini-sidebar-width: 280px;
  --gemini-content-width: 760px;
}

body.theme-gemini {
  --provider-sidebar-width: 280px;
  --provider-content-width: 760px;
  --sidebar-w: var(--gemini-sidebar-width);
  --chat-w: var(--gemini-content-width);
}

body.theme-gemini :where(button, a, input, textarea, select):focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 72%, CanvasText);
  outline-offset: 2px;
}

@media (max-width: 680px) {
  body.theme-gemini .topbar {
    padding-left: max(12px, env(safe-area-inset-left));
    padding-right: max(12px, env(safe-area-inset-right));
  }

  /* 移动端对齐官方：模型选择置于顶栏，底栏保持纯净大胶囊 */
  body.theme-gemini .topbar .model-picker {
    display: inline-flex !important;
    align-items: center !important;
    margin-left: 6px !important;
    max-width: 180px !important;
  }
  body.theme-gemini .topbar .model-picker-btn {
    font-size: 14.5px !important;
    font-weight: 500 !important;
    padding: 5px 8px !important;
    color: var(--fg) !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 4px !important;
    max-width: 100% !important;
  }
  body.theme-gemini .topbar .model-picker-btn span {
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
  }
  body.theme-gemini .composer-picker {
    display: none !important;
  }
  body.theme-gemini .composer {
    border-radius: 999px !important;
    padding: 6px 14px 6px 16px !important;
  }
  body.theme-gemini .composer-grid {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    grid-template-columns: none !important;
    grid-template-areas: none !important;
  }
  body.theme-gemini .composer-grid textarea {
    flex: 1 1 auto !important;
    min-width: 0 !important;
    padding: 8px 4px !important;
    font-size: 16px !important;
  }

  body.theme-gemini .composer-wrap {
    padding-right: max(12px, env(safe-area-inset-right));
    padding-bottom: calc(12px + env(safe-area-inset-bottom));
    padding-left: max(12px, env(safe-area-inset-left));
  }

  body.theme-gemini .welcome-title { font-size: 28px; }
  body.theme-gemini .gemini-spark-workspace-modal { max-width: calc(100vw - 16px); }
}

/* Official Gemini wait: a four-point sparkle that rotates and breathes. */
body.theme-gemini .waiting-gemini {
  width: 18px;
  height: 18px;
  color: var(--accent);
  animation: gemini-waiting-spin 1.8s infinite linear;
}
body.theme-gemini .waiting-elapsed {
  font-size: 12px;
  color: var(--fg-dim, #5f6368);
}
body.theme-gemini .waiting-gemini svg {
  display: block;
  width: 18px;
  height: 18px;
  animation: gemini-waiting-breathe 1.2s infinite ease-in-out;
}
@keyframes gemini-waiting-spin {
  to { transform: rotate(180deg); }
}
@keyframes gemini-waiting-breathe {
  0%, 100% { opacity: .55; transform: scale(.88); }
  50% { opacity: 1; transform: scale(1.08); }
}
@media (prefers-reduced-motion: reduce) {
  body.theme-gemini .waiting-gemini,
  body.theme-gemini .waiting-gemini svg { animation: none; }
}