/* 五小峰 个人网站 视觉覆盖层
   品牌层：邬晓峰设计系统（墨/米纸/朱红 · Space Grotesk + Noto · 方正克制）
   套用 CPA AGENT 项目的 topbar / built-by / 二层模型选择器 + 模型标签 chip */

/* ========== 二层下拉选择器（供应商 → 模型，带 thinking/vision badges） ========== */
.webhook-dropdown .webhook-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 14px;
  font-size: 0.88rem;
  color: var(--color-on-surface);
  cursor: pointer;
  border-radius: 4px;
  margin: 1px 6px;
  transition: background-color 0.15s;
}
.webhook-dropdown .webhook-item:hover {
  background: var(--color-surface-container-high);
}
.webhook-dropdown .webhook-item.active {
  background: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  font-weight: 600;
}
.webhook-item-name {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.webhook-item-badges {
  display: inline-flex;
  gap: 4px;
}
.webhook-item-badges .badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 2px;
  font-size: 0.65rem;
  color: var(--color-on-surface-variant);
  background: var(--color-surface-container-high);
}
.webhook-item-badges .badge-vision {
  color: var(--color-primary);
  background: var(--color-primary-container);
}
.webhook-item-badges .badge-thinking {
  color: var(--color-on-secondary-container);
  background: var(--color-secondary-container);
}
.provider-selector { margin-bottom: 6px; }

/* 思考模式 toggle */
.thinking-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  padding: 6px 10px;
  width: 100%;
  background: transparent;
  border: 1px solid var(--color-outline-variant);
  border-radius: 4px;
  color: var(--color-on-surface-variant);
  font-family: var(--font-body);
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.2s;
}
.thinking-toggle:hover {
  background: var(--color-surface-container-high);
  color: var(--color-on-surface);
}
.thinking-toggle.active {
  background: var(--color-primary-container);
  border-color: var(--color-primary);
  color: var(--color-on-primary-container);
}
.thinking-toggle i { font-size: 0.9rem; }

/* assistant 消息的模型标签 chip */
.model-chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 400;
  color: var(--color-on-surface-variant);
  background: var(--color-surface-container-high);
  padding: 3px 8px;
  border-radius: 2px;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* ========== Logo（wxf 徽章 + PATRICK WU） ========== */
.sidebar .logo {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  margin-bottom: 32px;
  padding: 0 4px;
}
.sidebar .logo .logo-img {
  height: 28px;
  width: auto;
  object-fit: contain;
  filter: none;
  mix-blend-mode: normal;
}
.sidebar .logo .logo-title {
  font-family: var(--font-headline);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-on-surface);
  letter-spacing: 0.22em;
  padding-left: 12px;
  line-height: 1;
  border-left: 1px solid var(--color-outline-variant);
}

/* ========== 侧边栏导航选中态（墨主导：纯墨底纸字） ========== */
.sidebar nav li.active > a,
.sidebar nav li.active a {
  background: var(--color-primary) !important;
  color: var(--color-on-primary) !important;
  font-weight: 600 !important;
  box-shadow: none !important;
  border-radius: 4px;
}
.sidebar nav li.active > a i { color: var(--color-on-primary); }

/* ========== 左下角作者署名 ========== */
.sidebar .built-by {
  margin-top: auto;
  padding: 16px 4px 0;
  border-top: 1px solid color-mix(in srgb, var(--color-outline-variant) 50%, transparent);
}
.sidebar .built-by-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-on-surface-variant);
  opacity: 0.5;
}
.sidebar .built-by-name {
  font-family: var(--font-body);
  font-size: 0.66rem;
  font-weight: 500;
  color: var(--color-on-surface-variant);
  margin-top: 2px;
  opacity: 0.5;
}

/* ========== 模型选择器（对齐 CPA AGENT：图标方块 + 开关） ========== */
.sidebar .webhook-section {
  padding-left: 12px;
  padding-right: 12px;
  margin-top: 0;
}
.sidebar-section-label {
  font-family: var(--font-headline);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-on-surface-variant);
  padding: 0 4px 8px;
}
/* 三行统一布局：图标 + 文字 + 右侧控件 */
.webhook-section .current-webhook-display,
.thinking-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 7px 10px;
  margin-bottom: 4px;
  border-radius: 4px;
  cursor: pointer;
  background: transparent;
  border: none;
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--color-on-surface);
  transition: background 0.2s;
}
.webhook-section .current-webhook-display:hover,
.thinking-toggle:hover {
  background: var(--color-surface-container-high);
}
.model-setting-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dim));
  color: var(--color-on-primary);
  font-size: 0.72rem;
}
.model-setting-text {
  flex: 1;
  min-width: 0;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.model-setting-caret {
  flex-shrink: 0;
  font-size: 0.75rem;
  color: var(--color-on-surface-variant);
}
.thinking-toggle { margin-top: 2px; }
.thinking-switch {
  flex-shrink: 0;
  position: relative;
  width: 40px;
  height: 22px;
  border-radius: 2px;
  background: var(--color-outline-variant);
  transition: background 0.2s;
}
.thinking-switch-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 2px;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.25);
  transition: transform 0.2s;
}
.thinking-toggle.active .thinking-switch { background: var(--color-primary); }
.thinking-toggle.active .thinking-switch-thumb { transform: translateX(18px); }

/* ========== 顶部 topbar ========== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: transparent;
  flex-shrink: 0;
}
.topbar-spacer { flex: 1; }
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.topbar-username {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-on-surface);
  font-weight: 500;
}
.topbar-logout {
  background: transparent;
  border: none;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-on-surface-variant);
  transition: all 0.2s;
}
.topbar-logout:hover {
  color: var(--color-error);
  background: var(--color-surface-container-high);
}
.topbar-avatar {
  display: block;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s;
}
.topbar-avatar:hover { transform: scale(1.05); }
.topbar-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.topbar .theme-toggle {
  position: static !important;
  top: auto !important;
  right: auto !important;
  width: 38px;
  height: 38px;
}

/* ========== 色阶：topbar 与 sidebar 同色，输入框加深 ========== */
.topbar {
  background: var(--color-surface-container-low);
}
.input-wrapper {
  background: var(--color-surface-container-high);
}
.input-wrapper:focus-within {
  background: var(--color-surface-container-high);
  box-shadow: 0 0 0 2px var(--color-primary-container), var(--shadow-ambient);
}

/* placeholder 字号缩小 */
#chat-input::placeholder {
  font-size: 0.85rem;
}

/* 上传按钮 vision 模型才可点 */
#upload-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}

/* ========== Thinking 按钮：未启用虚线半透明，启用实线高亮 ========== */
.thinking-toggle {
  border: 1px dashed var(--color-outline-variant);
  opacity: 0.5;
  transition: all 0.2s;
}
.thinking-toggle:hover {
  opacity: 0.85;
}
.thinking-toggle.active {
  opacity: 1;
  border: 1px solid var(--color-primary);
}
.thinking-toggle.active:hover {
  opacity: 1;
}

/* ========== 桌面端隐藏汉堡和遮罩 ========== */
.mobile-menu-btn { display: none; }
.sidebar-overlay { display: none; }

/* ========== Mobile（≤768px）：抽屉式 sidebar ==========
   覆盖 style.css 中"底部 tab bar"设计，统一改为汉堡抽屉。 */
@media (max-width: 768px) {
  /* iOS 100vh 修复 */
  html, body {
    height: 100dvh !important;
    height: -webkit-fill-available !important;
  }
  body { height: 100dvh !important; overflow: hidden; }

  /* 撤回 col-reverse */
  .container {
    flex-direction: row !important;
    height: 100% !important;
  }

  /* sidebar 抽屉：用纯块流（非 flex）整列一起滚。
     flex 列 + overflow 下子项高度计算不可靠（nav 被 flex:1 压矮、
     recents overflow 溢出框外盖住 built-by）；block 流按内容高自然堆叠 */
  .sidebar {
    position: fixed !important;
    top: 0;
    left: 0;
    width: 280px !important;
    height: 100vh !important;
    height: 100dvh !important;
    display: block !important;
    padding: 32px 20px !important;
    box-shadow: 4px 0 20px rgba(0,0,0,0.15);
    transform: translateX(-100%);
    transition: transform 0.28s ease;
    z-index: 200;
    overflow-y: auto;
  }
  .sidebar.open { transform: translateX(0); }

  /* 抽屉里所有元素都显示 */
  .sidebar .logo { display: flex !important; }
  .sidebar .built-by {
    display: flex !important;
    flex-direction: column;
    align-items: flex-start;
    margin-top: 24px; /* 块流里不再钉底（覆盖 margin-top:auto），自然跟在 recents 之后 */
  }
  .sidebar .webhook-section {
    display: block !important;
  }
  .sidebar nav { width: 100%; height: auto; }
  .sidebar nav ul {
    flex-direction: column !important;
    height: auto;
    justify-content: flex-start;
    align-items: stretch !important;
    gap: 8px;
  }
  .sidebar nav a {
    flex-direction: row !important;
    padding: 10px 14px !important;
    gap: 10px !important;
    font-size: 0.9rem !important;
    border-radius: 4px;
  }
  .sidebar nav a i { font-size: 1rem !important; }

  /* 遮罩 */
  .sidebar-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 150;
  }
  .sidebar-overlay.open {
    opacity: 1;
    pointer-events: auto;
  }

  /* 主区占满 */
  .chat-area, .settings-area {
    width: 100%;
    padding-bottom: 16px;
  }

  /* topbar 加汉堡按钮 */
  .topbar {
    padding: 12px 16px;
    justify-content: space-between;
  }
  .topbar-spacer { display: none; }
  .topbar-actions { gap: 10px; }
  .topbar-username { display: none; }
  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: transparent;
    border: none;
    color: var(--color-on-surface);
    font-size: 1.1rem;
    cursor: pointer;
    border-radius: 50%;
    transition: background 0.2s;
  }
  .mobile-menu-btn:hover {
    background: var(--color-surface-container-high);
  }

  .chat-history { padding: 16px; }
  .chat-input-area { padding: 0 12px; }
  .settings-content { padding: 8px 16px 32px; }
  .workspaces-content { padding: 8px 16px 32px; }
  .model-chip { white-space: normal; }

  /* 气泡 padding 缩小，给内容多挤出横向空间（mobile 视口窄） */
  .message-bubble {
    padding: 12px 16px;
  }
}

/* ========== 登录页（HBJ 风格 + 品牌层） ========== */
.login-page .auth-container {
  flex-direction: column;
  gap: 32px;
  padding: 32px 16px;
}
.login-page .auth-card {
  text-align: left;
  padding: 40px 44px;
  max-width: 440px;
}
.auth-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
}
.auth-brand-logo {
  height: 38px;
  width: auto;
  object-fit: contain;
}
.auth-brand-text {
  border-left: 1px solid var(--color-outline-variant);
  padding-left: 14px;
}
.auth-brand-title {
  font-family: var(--font-headline);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-on-surface);
  letter-spacing: 0.2em;
  line-height: 1.2;
}
.auth-brand-subtitle {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--color-on-surface-variant);
  margin-top: 4px;
  letter-spacing: 0.04em;
}
.auth-heading {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--color-on-surface);
  margin: 0 0 28px;
  letter-spacing: 0.02em;
}
.auth-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.auth-label {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-on-surface-variant);
  letter-spacing: 0.04em;
}
.auth-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 8px;
}
.auth-submit i { font-size: 0.9rem; }
.auth-built-by {
  text-align: center;
  font-family: var(--font-body);
}
.auth-built-by .built-by-label {
  font-family: var(--font-headline);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-on-surface-variant);
  opacity: 0.7;
}
.auth-built-by .built-by-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-on-surface-variant);
  margin-top: 2px;
}
.theme-toggle-fixed {
  position: absolute;
  top: 24px;
  right: 30px;
  width: 44px;
  height: 44px;
}

/* ========== 设置页 LB 风格 ========== */
.settings-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.settings-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px 40px 40px;
}
.settings-content > * {
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}
.settings-header { margin-bottom: 28px; }
.settings-title {
  font-family: var(--font-headline);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-on-surface);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.settings-subtitle {
  font-size: 0.9rem;
  color: var(--color-on-surface-variant);
}
.settings-grid {
  display: grid;
  grid-template-columns: minmax(320px, 380px) 1fr;
  gap: 24px;
}
.settings-card {
  background: var(--color-surface-container-lowest);
  border-radius: 4px;
  padding: 32px;
  box-shadow: var(--shadow-ambient);
}
.profile-card { text-align: center; }
.profile-avatar-wrap {
  position: relative;
  width: 96px;
  height: 96px;
  margin: 0 auto 16px;
}
.profile-avatar-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--color-primary-container);
  padding: 4px;
}
.profile-avatar-ring img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}
.profile-online-dot {
  position: absolute;
  bottom: 6px;
  right: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-ok);
  border: 3px solid var(--color-surface-container-lowest);
}
.profile-name {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-on-surface);
  margin-bottom: 4px;
}
.profile-role {
  color: var(--color-primary);
  font-size: 0.9rem;
  font-style: italic;
  margin-bottom: 6px;
}
.profile-email {
  font-size: 0.85rem;
  color: var(--color-on-surface-variant);
  margin-bottom: 12px;
}
.profile-fy-chip {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 2px;
  background: var(--color-surface-container-high);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-on-surface-variant);
  letter-spacing: 0.06em;
  margin-bottom: 24px;
}
.profile-stats {
  display: flex;
  justify-content: space-around;
  margin: 24px 0;
}
.profile-stat-num {
  font-family: var(--font-headline);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-on-surface);
}
.profile-stat-label {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--color-on-surface-variant);
  margin-top: 2px;
}
.profile-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}
.profile-btn {
  width: 100%;
  padding: 12px;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}
.profile-btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.profile-btn-secondary {
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
}
.profile-btn-ghost {
  background: transparent;
  color: var(--color-on-surface);
  border: 1px solid var(--color-outline-variant);
}
.profile-btn-ghost:hover {
  background: var(--color-surface-container-high);
}

.kb-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}
.kb-title {
  font-family: var(--font-headline);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-on-surface);
}
.kb-subtitle {
  font-size: 0.82rem;
  color: var(--color-on-surface-variant);
  margin-top: 2px;
}
.kb-access-chip {
  padding: 5px 10px;
  border-radius: 2px;
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  font-weight: 600;
}
.kb-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}
.kb-stat-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 16px;
  background: var(--color-surface-container-low);
  border-radius: 4px;
}
.kb-stat-label {
  font-family: var(--font-headline);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--color-on-surface-variant);
}
.kb-stat-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--color-on-surface);
  word-break: break-all;
}
.kb-note {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  background: var(--color-surface-container-high);
  border-radius: 4px;
  font-size: 0.82rem;
  color: var(--color-on-surface-variant);
  line-height: 1.5;
}
.kb-note i {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

.bottom-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}
.status-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--color-surface-container-lowest);
  border-radius: 4px;
  box-shadow: var(--shadow-ambient);
}
.status-card-icon {
  width: 38px;
  height: 38px;
  border-radius: 4px;
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.status-card-label {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--color-on-surface-variant);
  margin-bottom: 2px;
}
.status-card-value {
  font-family: var(--font-headline);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-on-surface);
}
.status-card-note {
  font-size: 0.72rem;
  color: var(--color-on-surface-variant);
  margin-top: 2px;
}

@media (max-width: 920px) {
  .settings-grid { grid-template-columns: 1fr; }
  .bottom-cards { grid-template-columns: 1fr; }
}

.workspaces-subtitle {
  font-family: var(--font-headline);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* 导航图标统一尺寸对齐 */
.sidebar nav a i {
  font-size: 1rem;
  width: 1.25em;
  text-align: center;
}

/* ========================================================================
   导航改造：顶部三分段 pill + 聊天区侧边栏照搬 CPA
   （模型设置无底色线性图标 + 最近对话 + 滚动）
   ======================================================================== */

/* sidebar 纵向 flex：让 nav 撑开、recents 列表内部滚动 */
.sidebar nav {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  width: 100%;
}

/* —— 顶部三分段 pill（聊天区 / 项目区 / 控制台） —— */
.nav-segment {
  display: flex;
  gap: 2px;
  padding: 3px;
  margin-bottom: 22px;
  background: var(--color-surface-container-high);
  border-radius: 4px;
  flex-shrink: 0;
}
.nav-seg-item {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 6px;
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-on-surface-variant);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}
.nav-seg-item:hover { color: var(--color-on-surface); }
.nav-seg-item.active {
  background: var(--color-surface-container-lowest);
  color: var(--color-on-surface);
  font-weight: 600;
  box-shadow: var(--shadow-ambient);
}
.nav-seg-item svg { width: 17px; height: 17px; flex-shrink: 0; }

/* —— 模型设置：覆盖渐变方块 → 无底色线性图标（对齐 CPA） —— */
.model-setting-icon {
  width: 20px;
  height: 20px;
  border-radius: 0;
  background: none;
  color: var(--color-on-surface-variant);
  font-size: inherit;
  transition: color 0.2s;
}
.model-setting-icon svg { width: 18px; height: 18px; }
.provider-selector .model-setting-icon,
.model-selector .model-setting-icon { color: var(--color-primary); }
.webhook-section .current-webhook-display:hover .model-setting-icon { color: var(--color-primary); }

/* —— Thinking 开关：照搬 CPA（无边框，未启用时图标+文字变淡） —— */
.thinking-toggle {
  border: none;
  opacity: 1;
}
.thinking-toggle.active { border: none; }
.thinking-toggle.active .model-setting-icon { color: var(--color-primary); }
.thinking-toggle:not(.active) .model-setting-icon,
.thinking-toggle:not(.active) .model-setting-text {
  opacity: 0.45;
  transition: opacity 0.2s, color 0.2s;
}
.thinking-toggle.active .model-setting-icon,
.thinking-toggle.active .model-setting-text { opacity: 1; }
.thinking-toggle:not(.active):hover .model-setting-icon,
.thinking-toggle:not(.active):hover .model-setting-text { opacity: 0.8; }

/* —— 最近对话（照搬 CPA） —— */
.recents-section {
  margin-top: 18px;
  padding: 0 12px;
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
}
.recents-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.recents-header .sidebar-section-label { padding-bottom: 0; }
.new-chat-btn {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 2px;
  border: none;
  background: transparent;
  color: var(--color-on-surface-variant);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.new-chat-btn:hover {
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
}
.recents-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 8px 0 0;
  padding: 0 4px 0 0;
  overflow-y: auto;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--color-outline-variant) 60%, transparent) transparent;
}
.recents-list::-webkit-scrollbar {
  width: 6px;
}
.recents-list::-webkit-scrollbar-track {
  background: transparent;
}
.recents-list::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--color-outline-variant) 60%, transparent);
  border-radius: 3px;
}
.recents-list::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--color-outline-variant) 90%, transparent);
}
.recents-item {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 10px;
  padding: 9px 10px;
  margin-bottom: 4px;
  border-radius: 4px;
  cursor: pointer;
  color: var(--color-on-surface-variant);
  transition: background 0.2s;
  min-width: 0;
  overflow: hidden;
}
.recents-item:hover {
  background: var(--color-surface-container-high);
  color: var(--color-on-surface);
}
.recents-item.active {
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
  font-weight: 600;
}
.recents-item > i {
  flex-shrink: 0;
  font-size: 0.9rem;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.recents-item-title {
  flex: 1;
  min-width: 0;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.88rem;
}
.recents-item-time {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  opacity: 0.7;
}
.recents-item-delete {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  border-radius: 2px;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}
.recents-item:hover .recents-item-delete { display: flex; }
.recents-item:hover .recents-item-time { display: none; }
.recents-item-delete:hover { background: rgba(0,0,0,0.12); }

.recents-item-edit {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  border-radius: 2px;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  margin-right: -6px; /* 抵消容器 gap，使铅笔与垃圾桶靠紧 (间距 4px) */
}
.recents-item:hover .recents-item-edit {
  display: flex;
}
.recents-item-edit:hover {
  background: rgba(0, 0, 0, 0.12);
}
[data-theme="dark"] .recents-item-edit:hover {
  background: rgba(255, 255, 255, 0.12);
}


/* —— 移动端：抽屉窄，三段横排放不下 → 改竖排三行（图标+文字，左对齐） —— */
@media (max-width: 768px) {
  .nav-segment {
    flex-direction: column;
    gap: 4px;
    margin-bottom: 18px;
  }
  .nav-seg-item {
    justify-content: flex-start;
    font-size: 0.92rem;
    font-weight: 500;
    padding: 11px 14px;
    gap: 12px;
  }
  .nav-seg-item svg { width: 18px; height: 18px; }
  /* 抽屉内最近对话不内部滚动，跟随抽屉整体滚动 */
  .recents-section { flex: none; display: block; min-height: 0; }
  .recents-list { overflow: visible; min-height: 0; max-height: none; }
}

/* ========== Chat 升级：思考折叠 / 复制·重生成 / Toast / typing / 字母头像 ========== */

/* typing 三点动画 */
.message.typing .message-bubble .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin: 0 2px;
  border-radius: 50%;
  background: var(--color-on-surface-variant);
  opacity: 0.4;
  animation: pw-typing 1.2s infinite ease-in-out;
}
.message.typing .message-bubble .dot:nth-child(2) { animation-delay: 0.15s; }
.message.typing .message-bubble .dot:nth-child(3) { animation-delay: 0.3s; }
@keyframes pw-typing {
  0%, 80%, 100% { opacity: 0.3; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-3px); }
}

/* 思考过程折叠块（真实 reasoning） */
.reasoning-block {
  margin-bottom: 10px;
  border: 1px solid var(--color-outline-variant, rgba(0,0,0,0.10));
  border-radius: 4px;
  background: var(--color-surface-container, rgba(0,0,0,0.025));
  overflow: hidden;
}
.reasoning-block > summary {
  cursor: pointer;
  list-style: none;
  padding: 8px 12px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-on-surface-variant);
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
}
.reasoning-block > summary::-webkit-details-marker { display: none; }
.reasoning-block > summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.66rem;
  margin-left: auto;
  opacity: 0.6;
  transition: transform 0.2s ease;
}
.reasoning-block[open] > summary::after { transform: rotate(180deg); }
.reasoning-block .reasoning-body {
  padding: 8px 12px 10px;
  margin-top: 0;
  border-top: 1px solid var(--color-outline-variant, rgba(0,0,0,0.08));
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--color-on-surface-variant);
  opacity: 0.88;
}

/* 并发上限/提示 toast */
.pw-toast {
  position: fixed;
  left: 50%;
  bottom: 96px;
  transform: translateX(-50%) translateY(10px);
  background: var(--color-inverse-surface, #2b2b2b);
  color: var(--color-inverse-on-surface, #fff);
  padding: 10px 18px;
  border-radius: 2px;
  font-size: 0.82rem;
  box-shadow: var(--shadow-2, 0 4px 16px rgba(0,0,0,0.18));
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 1000;
}
.pw-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* assistant 气泡 + 操作按钮列 */
.message-content-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  max-width: calc(100% - 44px);
}
.message-actions {
  display: flex;
  gap: 8px;
  margin-left: 12px;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.message.assistant:hover .message-actions { opacity: 1; }
@media (hover: none) {
  .message-actions { opacity: 1; }
}
.action-btn {
  background: transparent;
  border: none;
  color: var(--color-on-surface-variant);
  cursor: pointer;
  padding: 6px;
  border-radius: 2px;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s, color 0.2s;
  opacity: 0.65;
}
.action-btn:hover {
  background-color: var(--color-surface-container-high);
  color: var(--color-on-surface);
  opacity: 1;
}
.action-btn i { font-size: 14px; }
.action-btn.copy-success {
  color: var(--color-ok) !important;
  opacity: 1;
}

/* 用户无头像时的字母头像（聊天气泡内） */
.user-name-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-weight: 600;
  font-family: var(--font-headline), system-ui, sans-serif;
  user-select: none;
  border-radius: 50%;
}
.chat-name-avatar {
  width: 34px;
  height: 34px;
  font-size: 0.9rem;
}