/* ========================================
   Messages CSS - 讯息页面
   ins风白色系 · 圆角 · 轻阴影 · 留白舒适
   ======================================== */

/* ---- 全屏容器 ---- */
.messages-screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #ffffff;
  z-index: var(--z-drawer);
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.messages-screen.is-active {
  display: flex;
}

/* ================================================
   1. 顶部导航栏
   ================================================ */
.messages-nav {
  height: var(--status-bar-height);
  margin-top: var(--safe-area-top);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  background-color: #ffffff;
  flex-shrink: 0;
  position: relative;
}

.messages-nav__back {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-primary);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.messages-nav__back:active {
  background-color: rgba(0, 0, 0, 0.04);
}

.messages-nav__back svg {
  width: 22px;
  height: 22px;
}

.messages-nav__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  letter-spacing: 0.3px;
}

.messages-nav__add {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-primary);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.messages-nav__add:active {
  background-color: rgba(0, 0, 0, 0.04);
}

.messages-nav__add svg {
  width: 22px;
  height: 22px;
}

/* ================================================
   2. 可滚动内容区
   ================================================ */
.messages-body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0 var(--spacing-lg);
  padding-bottom: calc(68px + var(--safe-area-bottom) + 16px);
}

/* ================================================
   3. 搜索栏
   ================================================ */
.messages-search {
  margin-top: 6px;
  margin-bottom: 16px;
}

.messages-search__input-wrapper {
  display: flex;
  align-items: center;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 14px;
  padding: 10px 14px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.messages-search__input-wrapper:focus-within {
  border-color: rgba(0, 0, 0, 0.10);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.messages-search__icon {
  width: 18px;
  height: 18px;
  color: var(--color-text-hint);
  flex-shrink: 0;
  margin-right: 10px;
}

.messages-search__input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  font-family: var(--font-family);
}

.messages-search__input::placeholder {
  color: var(--color-text-hint);
  font-weight: var(--font-weight-light);
}

/* ================================================
   4. 分组切换栏
   ================================================ */
.messages-tabs {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
  padding: 4px;
  background: rgba(0, 0, 0, 0.025);
  border-radius: 12px;
}

.messages-tabs__item {
  flex: 1;
  text-align: center;
  padding: 8px 0;
  border-radius: 10px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background: transparent;
  font-family: var(--font-family);
  user-select: none;
}

.messages-tabs__item:active {
  background: rgba(0, 0, 0, 0.03);
}

.messages-tabs__item.is-active {
  background: #ffffff;
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

/* ================================================
   5. 置顶消息卡片（独立卡片）
   ================================================ */
.messages-pinned {
  margin-bottom: 14px;
}

.messages-pinned__label {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  margin-bottom: 8px;
  padding-left: 4px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: var(--font-weight-regular);
}

.messages-pinned__card {
  display: flex;
  align-items: center;
  padding: 14px 16px;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 16px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  position: relative;
}

.messages-pinned__card:active {
  background-color: rgba(0, 0, 0, 0.015);
}

/* ---- 头像 ---- */
.messages-avatar {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
  object-fit: cover;
}

/* 占位头像（渐变圆形） */
.messages-avatar--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: var(--font-weight-semibold);
  color: #ffffff;
}

/* 服务号头像：ins风黑白简约，不用彩色渐变 */
.messages-avatar--service {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fafafa;
  border: 1.5px solid rgba(0, 0, 0, 0.08);
}

.messages-avatar--service svg {
  width: 28px;
  height: 28px;
}

.messages-avatar--grad1 {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.messages-avatar--grad2 {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.messages-avatar--grad3 {
  background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.messages-avatar--grad4 {
  background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.messages-avatar--grad5 {
  background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
}

.messages-avatar--grad6 {
  background: linear-gradient(135deg, #fccb90 0%, #d57eeb 100%);
}

.messages-avatar--grad7 {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* ---- 消息内容 ---- */
.messages-item__body {
  flex: 1;
  margin-left: 14px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.messages-item__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.messages-item__name {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 65%;
}

.messages-item__time {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  flex-shrink: 0;
  margin-left: 8px;
}

.messages-item__preview {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

/* 小红点 */
.messages-item__badge {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: #ff3b30;
  flex-shrink: 0;
  margin-left: 10px;
}

/* 置顶图标小标识 */
.messages-pinned__icon {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 14px;
  height: 14px;
  color: var(--color-text-hint);
  opacity: 0.5;
}

/* ================================================
   6. 普通好友消息列表卡片
   ================================================ */
.messages-list {
  margin-bottom: 16px;
}

.messages-list__label {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  margin-bottom: 8px;
  padding-left: 4px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: var(--font-weight-regular);
}

.messages-list__card {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 16px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

.messages-list__item {
  display: flex;
  align-items: center;
  padding: 14px 16px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  position: relative;
}

.messages-list__item:active {
  background-color: rgba(0, 0, 0, 0.015);
}

/* 置顶聊天项背景 */
.messages-list__item--pinned {
  background: rgba(0, 0, 0, 0.018);
}

/* 置顶小标签 */
.pin-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 6px;
  padding: 1px 5px;
  border-radius: 999px;
  font-size: 10px;
  line-height: 1.4;
  color: rgba(0, 0, 0, 0.4);
  background: rgba(0, 0, 0, 0.05);
  font-weight: 400;
  vertical-align: middle;
  flex-shrink: 0;
}

/* 分隔线 */
.messages-list__item + .messages-list__item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 80px;
  right: 16px;
  height: 1px;
  background: rgba(0, 0, 0, 0.04);
}

/* ================================================
   7. 底部导航栏
   ================================================ */
.messages-bottom-nav {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-around;
  padding: 8px 0;
  padding-bottom: calc(8px + var(--safe-area-bottom));
  background: #ffffff;
  border-top: 1px solid rgba(0, 0, 0, 0.04);
  flex-shrink: 0;
}

.messages-bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 4px 0;
  background: none;
  border: none;
  cursor: pointer;
  min-width: 56px;
  transition: opacity var(--transition-fast);
}

.messages-bottom-nav__item:active {
  opacity: 0.6;
}

.messages-bottom-nav__icon {
  width: 24px;
  height: 24px;
  color: var(--color-text-hint);
}

.messages-bottom-nav__label {
  font-size: 10px;
  color: var(--color-text-hint);
  font-weight: var(--font-weight-light);
  font-family: var(--font-family);
}

/* 高亮态 */
.messages-bottom-nav__item.is-active .messages-bottom-nav__icon {
  color: var(--color-text-primary);
}

.messages-bottom-nav__item.is-active .messages-bottom-nav__label {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

/* ================================================
   8. 头像图片样式
   ================================================ */
.messages-avatar--img {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #f5f5f5;
}

.messages-avatar__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-full);
}

/* ================================================
   9. 加号弹出菜单
   ================================================ */
.msg-popup-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 80;
  display: none;
}

.msg-popup-backdrop.is-active {
  display: block;
}

.msg-popup-menu {
  position: absolute;
  top: calc(var(--safe-area-top) + var(--status-bar-height) + 4px);
  right: var(--spacing-lg);
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 14px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.10);
  z-index: 90;
  overflow: hidden;
  min-width: 160px;
  opacity: 0;
  transform: scale(0.9) translateY(-8px);
  transform-origin: top right;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.msg-popup-menu.is-active {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: auto;
}

.msg-popup-menu__item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 18px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text-primary);
  transition: background-color var(--transition-fast);
}

.msg-popup-menu__item:active {
  background-color: rgba(0, 0, 0, 0.03);
}

.msg-popup-menu__item + .msg-popup-menu__item {
  border-top: 1px solid rgba(0, 0, 0, 0.04);
}

.msg-popup-menu__item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

/* ================================================
   10. 联系人选择浮层
   ================================================ */
.msg-contact-picker {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #ffffff;
  z-index: 100;
  display: none;
  flex-direction: column;
}

.msg-contact-picker.is-active {
  display: flex;
}

.msg-contact-picker__header {
  height: var(--status-bar-height);
  margin-top: var(--safe-area-top);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  flex-shrink: 0;
}

.msg-contact-picker__back {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  transition: background-color var(--transition-fast);
}

.msg-contact-picker__back:active {
  background-color: rgba(0, 0, 0, 0.04);
}

.msg-contact-picker__back svg {
  width: 22px;
  height: 22px;
}

.msg-contact-picker__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.msg-contact-picker__body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 12px var(--spacing-lg);
}

/* ---- 选择列表项 ---- */
.msg-picker-item {
  display: flex;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.msg-picker-item:last-child {
  border-bottom: none;
}

.msg-picker-item.is-added {
  opacity: 0.55;
}

.msg-picker-avatar {
  width: 44px;
  height: 44px;
  font-size: 16px;
}

.msg-picker-info {
  flex: 1;
  margin-left: 12px;
  min-width: 0;
}

.msg-picker-name {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.msg-picker-remark {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.msg-picker-btn {
  flex-shrink: 0;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1.5px solid var(--color-text-primary);
  background: none;
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.msg-picker-btn:active {
  background: var(--color-text-primary);
  color: #ffffff;
}

.msg-picker-added {
  flex-shrink: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  padding: 6px 12px;
}

.msg-picker-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--color-text-hint);
  font-size: var(--font-size-sm);
}

/* ================================================
   11. Toast 提示（讯息页专用）
   ================================================ */
.msg-toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  padding: 10px 24px;
  border-radius: 20px;
  font-size: 13px;
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  white-space: nowrap;
}

.msg-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ================================================
   15. 长按上下文菜单（置顶 / 删除好友）
   ================================================ */
.msg-context-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 80;
  display: none;
}

.msg-context-backdrop.is-active {
  display: block;
}

.msg-context-menu {
  position: absolute;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 14px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
  z-index: 90;
  overflow: hidden;
  min-width: 160px;
  opacity: 0;
  transform: scale(0.88) translateY(-6px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.msg-context-menu.is-active {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: auto;
}

.msg-context-menu__item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 18px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text-primary);
  transition: background-color var(--transition-fast);
}

.msg-context-menu__item:active {
  background-color: rgba(0, 0, 0, 0.03);
}

.msg-context-menu__item + .msg-context-menu__item {
  border-top: 1px solid rgba(0, 0, 0, 0.04);
}

.msg-context-menu__item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

.msg-context-menu__item--danger {
  color: #ff3b30;
}

.msg-context-menu__item--danger svg {
  color: #ff3b30;
}

/* ================================================
   12. 空状态占位（备用）
   ================================================ */
.messages-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--color-text-hint);
}

.messages-empty__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  opacity: 0.3;
}

.messages-empty__text {
  font-size: var(--font-size-sm);
}

/* ================================================
   13. 好友板块 - 横向头像列表
   ================================================ */
.messages-friends-bar {
  margin-bottom: 18px;
  overflow: hidden;
  min-width: 0;
}

.messages-friends-bar__header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
  padding-left: 4px;
}

.messages-friends-bar__title {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: var(--font-weight-regular);
}

.messages-friends-bar__count {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  font-weight: var(--font-weight-light);
}

.messages-friends-bar__scroll {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  padding: 4px 2px 8px;
  scrollbar-width: none;
  width: 100%;
  flex-wrap: nowrap;
}

.messages-friends-bar__scroll::-webkit-scrollbar {
  display: none;
}

/* 单个好友项 */
.friends-bar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  cursor: pointer;
  width: 56px;
}

.friends-bar-item:active {
  opacity: 0.7;
}

.friends-bar-item__avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: var(--font-weight-semibold);
  color: #ffffff;
  position: relative;
  border: 2px solid transparent;
  transition: border-color 0.2s;
}

.friends-bar-item__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-full);
}

/* 在线状态指示点 */
.friends-bar-item__online {
  position: absolute;
  bottom: 1px;
  right: 1px;
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: #34c759;
  border: 2px solid #ffffff;
}

.friends-bar-item__name {
  font-size: 11px;
  color: var(--color-text-secondary);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 56px;
  line-height: 1.2;
}

/* 好友板块空状态 */
.friends-bar-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px 0;
  color: var(--color-text-hint);
  font-size: var(--font-size-xs);
}

/* ================================================
   14. 身份选择浮层
   ================================================ */
.identity-picker-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 200;
  display: none;
  align-items: flex-end;
  justify-content: center;
}

.identity-picker-overlay.is-active {
  display: flex;
}

.identity-picker-sheet {
  width: 100%;
  max-height: 75%;
  background: #ffffff;
  border-radius: 20px 20px 0 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: identitySheetSlideUp 0.3s ease;
}

@keyframes identitySheetSlideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

.identity-picker-sheet__header {
  padding: 24px 20px 16px;
  text-align: center;
  flex-shrink: 0;
}

.identity-picker-sheet__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.identity-picker-sheet__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.identity-picker-sheet__list {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0 16px;
}

/* 单个身份选项 */
.identity-picker-item {
  display: flex;
  align-items: center;
  padding: 14px 12px;
  border-radius: 14px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  margin-bottom: 4px;
}

.identity-picker-item:active {
  background-color: rgba(0, 0, 0, 0.03);
}

.identity-picker-item.is-selected {
  background-color: rgba(0, 0, 0, 0.04);
  border: 1.5px solid var(--color-text-primary);
}

.identity-picker-item__avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f0f0f0;
  flex-shrink: 0;
}

.identity-picker-item__avatar svg {
  width: 22px;
  height: 22px;
  color: var(--color-text-hint);
}

.identity-picker-item__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-full);
}

.identity-picker-item__info {
  flex: 1;
  margin-left: 12px;
  min-width: 0;
}

.identity-picker-item__name {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.identity-picker-item__sub {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.identity-picker-item__check {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  border: 2px solid rgba(0, 0, 0, 0.15);
  flex-shrink: 0;
  margin-left: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.identity-picker-item.is-selected .identity-picker-item__check {
  background: var(--color-text-primary);
  border-color: var(--color-text-primary);
}

.identity-picker-item__check svg {
  width: 14px;
  height: 14px;
  color: #ffffff;
  opacity: 0;
  transition: opacity 0.2s;
}

.identity-picker-item.is-selected .identity-picker-item__check svg {
  opacity: 1;
}

/* 底部操作区 */
.identity-picker-sheet__actions {
  padding: 12px 20px calc(12px + var(--safe-area-bottom));
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
  border-top: 1px solid rgba(0, 0, 0, 0.04);
}

.identity-picker-sheet__skip {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  border: none;
  background: var(--color-text-primary);
  color: #ffffff;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-family);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.identity-picker-sheet__skip:active {
  opacity: 0.8;
}

.identity-picker-sheet__manage {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: transparent;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background-color var(--transition-fast);
}

.identity-picker-sheet__manage:active {
  background-color: rgba(0, 0, 0, 0.03);
}

/* 身份列表空状态 */
.identity-picker-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  color: var(--color-text-hint);
}

.identity-picker-empty__icon {
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
  opacity: 0.3;
}

.identity-picker-empty__text {
  font-size: var(--font-size-sm);
  text-align: center;
  line-height: 1.5;
}

/* ================================================
   16. 删除聊天确认弹窗
   ================================================ */
.msg-confirm-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 300;
  display: none;
}

.msg-confirm-backdrop.is-active {
  display: block;
}

.msg-confirm-dialog {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.92);
  width: calc(100% - 64px);
  max-width: 300px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.18);
  z-index: 310;
  padding: 28px 24px 20px;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.msg-confirm-dialog.is-active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: auto;
}

.msg-confirm-dialog__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 10px;
}

.msg-confirm-dialog__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 24px;
}

.msg-confirm-dialog__actions {
  display: flex;
  gap: 10px;
}

.msg-confirm-dialog__btn {
  flex: 1;
  padding: 12px 0;
  border-radius: 10px;
  border: none;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-family);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.msg-confirm-dialog__btn:active {
  opacity: 0.7;
}

.msg-confirm-dialog__btn--cancel {
  background: rgba(0, 0, 0, 0.06);
  color: var(--color-text-primary);
}

.msg-confirm-dialog__btn--danger {
  background: #ff3b30;
  color: #ffffff;
}