:root {
    /* 背景色系 */
    --chat-bg: #f5f1e6;           /* 整体背景：极浅米色 */
    --chat-panel: #fffcf5;        /* 面板：极浅米色 */
    --chat-panel-soft: #ece5d8;   /* 柔和内层面板：浅米色 */
    
    /* 主色调 */
    --chat-primary: #a67c52;      /* 主色：中棕色 */
    --chat-primary-foreground: #ffffff; /* 主色前景：白色 */
    --chat-accent: #d4c8aa;       /* 强调色：浅棕米色 */
    --chat-accent-dark: #5c4d3f;  /* 强调色深色：深棕色 */
    --chat-accent-soft: #e2d8c3;  /* 强调色浅色：浅米色 */
    
    /* 文字色系 */
    --chat-text: #3a322c;         /* 主文字：深棕色 */
    --chat-muted: #7d6b56;        /* 次要文字：中棕色 */
    --chat-muted-bg: #ece5d8;     /* 次要背景：浅米色 */
    
    /* 卡片和气泡 */
    --chat-card: #fffcf5;         /* 卡片背景：极浅米色 */
    --chat-bubble: #ffffff;       /* 对方气泡：白色 */
    --chat-bubble-me: #f5f1e6;    /* 自己气泡：浅米色 */
    
    /* 边框和输入 */
    --chat-border: #dbd0ba;       /* 边框：浅棕米色 */
    --chat-input: #dbd0ba;        /* 输入框边框：浅棕米色 */
    --chat-ring: #a67c52;         /* 焦点环：中棕色 */
    
    /* 警告和错误（破坏性动作配色） */
    --chat-alert: #b54a35;        /* 警告/错误色：红棕色（Destructive） */
    --chat-alert-soft: #f8e0da;   /* 警告柔和背景：Destructive 的浅色版 */
    --chat-alert-foreground: #ffffff; /* 警告前景：白色 */
    --chat-success: #2f7d4c;      /* 在线 / 成功状态色：柔和绿色 */
    --chat-success-soft: #e1f3e8; /* 在线柔和背景 */
    
    /* 统一圆角与阴影等级 */
    --chat-radius-xl: 24px;
    --chat-radius-lg: 16px;
    --chat-radius-md: 12px;
    --chat-radius-pill: 8px;
    
    --chat-shadow-elevated: 0 10px 30px rgba(0, 0, 0, 0.04);
    --chat-shadow-card: 0 2px 8px rgba(0, 0, 0, 0.02);
    --chat-shadow-soft: 0 2px 6px rgba(0, 0, 0, 0.03);
    /* 视口预留高度：用于抵消站点头部/页边距，方便内部滚动 */
    --chat-viewport-gap: 120px;
}

body.chat-page {
    background: var(--chat-bg);
}

body.chat-page #page {
    width: min(1200px, 100%);
    max-width: 1200px;
    margin: 0 auto;
}

body.chat-page #main {
    background: transparent;
    padding: 12px 0 24px;
}

body.chat-page #main .inner-wrap,
body.chat-page #content,
body.chat-page #primary {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    float: none;
    padding: 0;
    box-sizing: border-box;
}

body.chat-page .toggle-key {
    display: none !important;
}

.chat-app {
    background: var(--chat-panel);
    border-radius: 0 0 var(--chat-radius-xl) var(--chat-radius-xl);
    box-shadow: var(--chat-shadow-elevated);
    overflow: visible;
    color: var(--chat-text);
    width: 100%;
    max-width: 1200px; /* 与头图一致的容器宽度 */
    margin: 0 auto;
}
.chat-app img{margin-bottom: 0;}

.chat-topbar {
    background: transparent;
    padding: 12px 8px 0px;
    border-radius: var(--chat-radius-xl) var(--chat-radius-xl) 0 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    overflow: visible;
}

.chat-topbar-main {
    /* 使用与主体布局相同的列宽：左侧 280px 为侧边栏，右侧为内容区 */
    display: grid;
    grid-template-columns: 280px 1fr;
    column-gap: 12px;
    align-items: center;
    padding: 0 0 8px;
    overflow: visible;
    position: relative;
}

.chat-topbar-controls {
    grid-column: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    overflow: visible;
    position: relative;
}

.chat-topbar-brand {
    grid-column: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 220px;
}

.chat-brand-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: transparent; /* 只保留 logo，本身不再绘制底色圆形 */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 600;
    color: #ffffff;
    box-shadow: none; /* 去掉底部的投影圆板 */
}

/* 品牌 Logo 图片样式，使其完全填充圆形容器 */
.chat-brand-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.chat-brand-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.chat-brand-title {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
    color: var(--chat-text);
    letter-spacing: -0.01em;
}

.chat-brand-tip {
    margin: 0;
    font-size: 12px;
    color: var(--chat-muted);
    font-weight: 400;
}

.chat-topnav-wrap {
    padding: 2px; /* 减小内边距，配合内部高度减少整体尺寸 */
    overflow: hidden; /* 防止溢出 */
    background: var(--chat-muted-bg);
    border-radius: 10px; /* 稍微减小圆角 */
    box-shadow: var(--chat-shadow-soft);
    border: 1px solid var(--chat-border);
    margin-left: 0;
    height: 38px; /* 强制高度 */
    display: flex;
    align-items: center;
    box-sizing: border-box;
}

.chat-topnav {
    display: flex;
    gap: 6px;
    /* align-items: center; Removed to allow stretch */
    margin: 0;
    padding: 0;
    height: 100%;
}

/* .chat-topbar-controls .chat-topnav removed */

.chat-topnav-item {
    border: 1px solid transparent; /* shadcn-ui 风格：默认透明边框 */
    border-radius: 6px; /* shadcn-ui 风格：rounded-md (6px) */
    padding: 0 12px;
    font-weight: 500;
    font-size: 13px;
    background: transparent;
    color: var(--chat-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    min-width: 64px;
    /* height: 100%; See parents */
    white-space: nowrap;
}

.chat-topnav-item:hover {
    background: rgba(166, 124, 82, 0.08); /* shadcn-ui 风格：hover:bg-accent */
    color: var(--chat-text);
}

.chat-topnav-item.active {
    background: var(--chat-card); /* shadcn-ui 风格：bg-background */
    color: var(--chat-text);
    border-color: var(--chat-border); /* shadcn-ui 风格：激活时显示边框 */
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05); /* shadcn-ui 风格：shadow-sm */
}



.chat-topnav-icon {
    width: 16px; /* shadcn-ui 风格：size-4 (16px) */
    height: 16px; /* shadcn-ui 风格：size-4 (16px) */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.chat-topnav-icon img,
.chat-topnav-icon svg {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    opacity: 0.7;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.chat-topnav-item.active .chat-topnav-icon img,
.chat-topnav-item.active .chat-topnav-icon svg,
.chat-topnav-item:hover .chat-topnav-icon img,
.chat-topnav-item:hover .chat-topnav-icon svg {
    opacity: 1;
    transform: translateY(-1px);
}

.chat-nav-indicator {
    position: absolute;
    top: -4px;
    right: 4px;
    min-width: 18px;
    height: 18px;
    border-radius: 999px;
    background: var(--chat-alert);
    color: var(--chat-alert-foreground);
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
    opacity: 0;
    transform: scale(0.8);
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.2s ease;
    pointer-events: none;
    z-index: 10;
    box-shadow: 0 2px 6px rgba(181, 74, 53, 0.3);
    border: 2px solid var(--chat-card);
}

.chat-nav-indicator::after {
    content: attr(data-count);
    display: block;
    line-height: 20px;
    text-align: center;
}

.chat-nav-indicator.show {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.chat-icon {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #201202;
}

/* 当 .chat-icon 包含 SVG 图标时，移除黑色背景 */
.chat-icon.icon-plus,
.chat-icon.icon-users {
    background: transparent !important;
    width: auto;
    height: auto;
    border-radius: 0;
}

.chat-icon .chat-icon-svg {
    display: block;
}

.chat-icon.icon-search {
    width: 14px;
    height: 14px;
    border-radius: 0;
    background: transparent;
    position: relative;
    flex-shrink: 0;
}

.chat-icon.icon-search::before {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    border: 2px solid var(--chat-text);
    border-radius: 50%;
    top: 0;
    left: 0;
    opacity: 0.7;
}

.chat-icon.icon-search::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 2px;
    background: var(--chat-text);
    border-radius: 1px;
    transform: rotate(45deg);
    bottom: 1px;
    right: -1px;
    opacity: 0.7;
}

/* 搜索按钮样式 - 使其看起来可点击 */
.chat-icon.icon-search.search-btn {
    cursor: pointer;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.chat-icon.icon-search.search-btn:hover {
    opacity: 1;
    transform: scale(1.1);
}

.chat-icon.icon-search.search-btn:hover::before,
.chat-icon.icon-search.search-btn:hover::after {
    opacity: 1;
}

.icon-group,
.icon-friend,
.icon-bell,
.icon-gear,
.icon-users,
.icon-plus,
.icon-send {
    border-radius: 4px;
}

/* 通用 SVG 图标样式（shadcn-ui / Lucide 风格） */
.chat-icon-svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
}

/* 仅保留线性 SVG 图标：隐藏附件工具区中旧的彩色位图图标（无论是否在按钮内） */
.chat-composer-tools img {
    display: none !important;
}

.chat-top-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    min-width: 300px;
    flex: 0 0 320px;
    align-self: center;
}

.chat-top-search {
    display: flex;
    justify-content: flex-end;
    width: 100%;
}

.chat-top-search-box {
    background: var(--chat-card);
    border-radius: var(--chat-radius-md);
    padding: 0 12px;
    height: 36px; /* 强制高度为 36px */
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    max-width: 300px;
    border: 1px solid var(--chat-border);
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
    margin-right: 16px;
}

.chat-top-search-box:focus-within {
    border-color: var(--chat-ring);
    background: var(--chat-card);
    box-shadow: 0 0 0 3px rgba(166, 124, 82, 0.15);
}

.chat-top-search-box input {
    border: none;
    background: transparent;
    color: var(--chat-text);
    font-size: 14px;
    width: 100%;
    height: 100%; /* 确保填满搜索框高度，实现垂直居中 */
    outline: none;
    padding: 0; /* Reset padding */
    margin: 0; /* Reset margin */
    line-height: normal; /* Let height center the text */
}

.chat-top-search-box input::placeholder {
    color: var(--chat-muted);
    opacity: 0.6;
}

.chat-top-search-box input::-webkit-input-placeholder {
    color: rgba(67, 32, 6, 0.6);
}

.chat-top-search-box input::-moz-placeholder {
    color: rgba(67, 32, 6, 0.6);
    opacity: 1;
}

.chat-top-search-box input:-ms-input-placeholder {
    color: rgba(67, 32, 6, 0.6);
}

.chat-announcement {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fffcf5;
    color: #fff;
    padding: 0 28px;
    gap: 12px;
}

.chat-announcement.is-hidden {
    display: none;
}

.chat-announcement-body {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-height: 32px;
}

.chat-announcement-icon {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    position: relative;
}

.chat-announcement-icon::after {
    content: '';
    position: absolute;
    top: 7px;
    left: 7px;
    width: 12px;
    height: 12px;
    border-radius: 2px;
    border: 2px solid #fff;
    border-top: none;
    transform: rotate(45deg);
}

.chat-announcement-text {
    margin: 0;
    font-size: 14px;
}

.chat-announcement-text a.chat-announcement-link {
    color: inherit;
    text-decoration: underline;
}

.chat-announcement-close {
    border: 1px solid var(--chat-border);
    background: var(--chat-muted-bg);
    color: var(--chat-muted);
    font-size: 20px;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, color 0.2s ease;
}

.chat-announcement-close:hover {
    background: var(--chat-border);
    color: var(--chat-text);
}

.chat-announcement:not(.is-hidden) {
    animation: fadeSlideDown 0.45s ease;
}

/* 破坏性按钮（如 删除好友 / 解散群组） */
.is-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 14px;
    border-radius: var(--chat-radius-pill);
    border: 1px solid transparent;
    background: var(--chat-alert);
    color: var(--chat-alert-foreground);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease, border-color 0.2s ease;
    box-shadow: 0 2px 6px rgba(181, 74, 53, 0.25);
}

.is-danger:hover {
    background: #a14331;
    box-shadow: 0 3px 10px rgba(181, 74, 53, 0.35);
}

.is-danger:active {
    transform: translateY(1px);
    box-shadow: 0 1px 4px rgba(181, 74, 53, 0.3);
}

.is-danger:disabled,
.is-danger.is-disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
}

.chat-layout {
    display: grid;
    /* 调整布局比例：缩窄左右侧边栏，放大中间聊天区域 */
    grid-template-columns: 260px 500px 240px; /* SidebarLeft / Stage / SidebarRight */
    gap: 12px;
    padding: 0 8px 8px;
    height: calc(100vh - var(--chat-viewport-gap)); /* 固定整体聊天区域高度，内部滚动 */
    min-height: calc(100vh - var(--chat-viewport-gap));
    max-height: calc(100vh - var(--chat-viewport-gap));
    overflow: hidden; /* 防止消息内容撑高整页 */
}

/* 当右侧栏隐藏时，中间区域占据更多空间 */
.chat-column-right[style*="display: none"],
.chat-column-right:not(:visible) {
    display: none !important;
}

.chat-layout:has(.chat-column-right:not(:visible)) .chat-column-stage,
.chat-layout:has(.chat-column-right[style*="display: none"]) .chat-column-stage {
    grid-column: 2 / 4;
}

/* 聊天消息操作菜单（三点折叠） */
.chat-action-menu-wrap {
    position: relative;
    display: inline-block;
    vertical-align: middle;
}

.chat-action-more-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    color: var(--chat-muted);
    cursor: pointer;
    background: transparent;
    border: none;
    transition: all 0.2s;
    padding: 0;
    position: relative;
    z-index: 10;
}

.chat-action-more-btn:hover,
.chat-action-menu-wrap.active .chat-action-more-btn {
    background: rgba(166, 124, 82, 0.1);
    color: var(--chat-text);
}

.chat-action-dropdown {
    position: absolute;
    /* 默认向上弹出，如果空间不够可以动态通过JS调整，这里暂时默认bottom: 100% 居右 */
    bottom: 100%;
    right: 0;
    margin-bottom: 6px;
    background: #fff;
    border: 1px solid var(--chat-border);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: 4px;
    min-width: 90px;
    z-index: 1000;
    display: none;
    flex-direction: column;
    gap: 2px;
}

.chat-action-menu-wrap.active .chat-action-dropdown {
    display: flex;
    animation: fadeIn 0.15s ease;
}

/* 调整菜单内的按钮样式 */
.chat-action-dropdown .chat-message-action {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    padding: 8px 12px;
    background: transparent;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    color: var(--chat-text);
    cursor: pointer;
    white-space: nowrap;
    text-align: left;
    margin: 0;
}

.chat-action-dropdown .chat-message-action:hover {
    background: #f5f1e6; /* 使用主题背景色 */
    color: var(--chat-primary);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}
.chat-layout.no-right-sidebar {
    grid-template-columns: 280px 1fr;
}

.chat-layout.no-right-sidebar .chat-column-stage {
    grid-column: 2;
}

.chat-column {
    background: var(--chat-card);
    border-radius: var(--chat-radius-lg);
    padding: 8px;
    border: 1px solid var(--chat-border);
    box-shadow: var(--chat-shadow-card);
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
    min-height: 0;
    height: 100%;
    overflow: hidden;
}

.chat-column-stage {
    background: var(--chat-card);
    /* padding: 14px 14px 12px; */
    gap: 0; /* 移除聊天区域内元素间距 */
    display: flex;
    flex-direction: column;
    min-height: 0;
    height: 100%;
    overflow: hidden;
}

/* 聊天区域标题栏 */
.chat-stage-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--chat-border);
}

.chat-stage-heading h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--chat-text);
    line-height: 1.4;
}

.chat-stage-heading p {
    margin: 4px 0 0;
    font-size: 13px;
    color: var(--chat-muted);
    line-height: 1.5;
}

.chat-stage-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* 群公告板块（shadcn-ui 风格） */
.chat-group-notice {
    background: var(--chat-card);
    border: 1px solid var(--chat-border);
    border-radius: var(--chat-radius-md);
    padding: 10px 12px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

.chat-group-notice-body {
    flex: 1;
    min-width: 0;
}

.chat-group-notice-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--chat-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.chat-group-notice-text {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    color: var(--chat-text);
    word-wrap: break-word;
}

.chat-group-notice-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
    align-items: center;
}

/* 链接按钮（shadcn-ui 风格） */
.chat-link-btn {
    border: none;
    background: transparent;
    color: var(--chat-primary);
    font-size: 13px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--chat-radius-pill);
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    line-height: 1.4;
}

.chat-link-btn:hover {
    background: rgba(166, 124, 82, 0.08);
    color: var(--chat-primary);
}

.chat-link-btn.ghost {
    color: var(--chat-muted);
}

.chat-link-btn.ghost:hover {
    background: rgba(125, 107, 86, 0.08);
    color: var(--chat-text);
}

.chat-link-btn.edit {
    color: var(--chat-primary);
}

/* 单条消息容器 */
.chat-message {
    display: flex;
    align-items: flex-end;
    gap: 8px;
}

.chat-message.z-top {
    z-index: 100;
    position: relative;
}

.chat-message.me {
    justify-content: flex-end;
}

.chat-message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--chat-muted-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--chat-text);
    flex-shrink: 0;
    overflow: hidden;
}

.chat-message-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.chat-message-body {
    max-width: 100%;
    background: #f5f1e6;
    border-radius: 12px; /* 稍微减小圆角使其更紧凑 */
    padding: 5px 8px; /* 减小内边距 */
    font-size: 14px;
    line-height: 1.5;
    box-shadow: 0 2px 4px rgba(15, 23, 42, 0.06);
    text-align: left; /* 聊天气泡内部文本默认靠左 */
}

.chat-message.me .chat-message-body {
    background: #f5f1e6;
}

.chat-message-body.meta-bottom {
    padding-bottom: 4px;
}

.chat-message-text {
    margin: 0;
    text-align: left; /* 确保正文始终左对齐 */
}

.chat-message-meta {
    margin-top: 2px;
    margin-bottom: 0;
    font-size: 11px;
    color: var(--chat-muted);
    display: flex;
    justify-content: flex-start; /* 时间等信息默认靠左 */
    gap: 6px;
}

.chat-message-meta.compact {
    justify-content: flex-end;
}

.chat-message-sender {
    max-width: 140px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-message-time {
    white-space: nowrap;
    color: #a09080; /* 更浅的棕灰色 */
}

/* 撤回按钮：压缩高度，贴近气泡底部 */
/* 撤回按钮/菜单区域：位于气泡外侧并对齐底部 */
.chat-message-actions {
    margin-top: 0;
    margin-left: 6px;
    margin-right: 6px;
    align-self: flex-end; /* 与气泡底部对齐 */
    opacity: 1; 
    max-height: none;
    overflow: visible; 
    transition: none;
    z-index: 10;
}

.chat-message-action {
    border: none;
    padding: 0;
    font-size: 11px;
    color: var(--chat-muted);
    background: transparent;
    cursor: pointer;
}

.chat-message-action:hover {
    color: #4b5563;
}

/* 移除旧的 hover 显示逻辑，因为现在常显了 */
/* 
.chat-message:hover .chat-message-actions,
.chat-message.me:hover .chat-message-actions {
    opacity: 1;
    max-height: 24px;
} 
*/

/* 搜索结果跳转时的消息高亮动画 */
.chat-message.highlight-jump {
    position: relative;
}

.chat-message-body.highlight-anim {
    animation: messageHighlightPulse 0.6s ease-out;
    box-shadow: 0 0 0 3px var(--chat-accent), 0 4px 12px rgba(166, 124, 82, 0.25) !important;
    border-radius: 14px;
}

.chat-message.highlight-flash .chat-message-body {
    animation: messageFlash 1.5s ease-out;
}

@keyframes messageHighlightPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(166, 124, 82, 0.6), 0 2px 4px rgba(15, 23, 42, 0.06);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 0 6px rgba(166, 124, 82, 0.3), 0 4px 16px rgba(166, 124, 82, 0.3);
        transform: scale(1.02);
    }
    100% {
        box-shadow: 0 0 0 3px var(--chat-accent), 0 4px 12px rgba(166, 124, 82, 0.25);
        transform: scale(1);
    }
}

@keyframes messageFlash {
    0%, 100% {
        background-color: inherit;
    }
    25%, 75% {
        background-color: rgba(242, 165, 36, 0.15);
    }
    50% {
        background-color: rgba(242, 165, 36, 0.25);
    }
}

.chat-profile-card {
    display: flex;
    align-items: center;
    gap: 14px;
}

.chat-avatar {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: var(--chat-muted-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 600;
    color: var(--chat-primary);
    overflow: hidden;
    position: relative;
}

.chat-avatar::before {
    content: attr(data-initial);
    z-index: 0;
}

.chat-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    border-radius: inherit;
}

.chat-avatar.has-image {
    background: transparent !important;
}

.chat-avatar.has-image img {
    display: block;
}

.chat-avatar.has-image > span,
.chat-avatar.has-image::before {
    display: none;
}

.chat-profile-name {
    margin: 0;
    font-size: 18px;
}

.chat-profile-username {
    margin: 4px 0 0;
    color: var(--chat-muted);
    font-size: 13px;
}

.chat-status-badge {
    margin-left: auto;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(7, 209, 149, 0.18);
    color: #0cd6a2;
    font-size: 12px;
    font-weight: 600;
}

.chat-left-actions {
    display: flex;
    gap: 12px;
}

.chat-btn {
    border: none;
    border-radius: 6px; /* shadcn-ui 风格：rounded-md (6px) */
    padding: 8px 16px; /* shadcn-ui 风格：px-4 py-2 (16px 8px) */
    font-size: 14px; /* shadcn-ui 风格：text-sm (14px) */
    font-weight: 500; /* shadcn-ui 风格：font-medium (500) */
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px; /* shadcn-ui 风格：gap-2 (8px) */
    transition: all 0.2s ease;
    letter-spacing: 0.02em;
    height: 36px; /* shadcn-ui 风格：h-9 (36px) */
    white-space: nowrap; /* shadcn-ui 风格：防止文字换行 */
}

.chat-btn.primary {
    background: #fffcf5; /* 极浅米色，未激活状态 */
    color: var(--chat-text);
    border: 1px solid var(--chat-border);
    box-shadow: none;
}

.chat-btn.primary:hover,
.chat-btn.primary:active,
.chat-btn.primary.is-active {
    background: var(--chat-primary);
    color: var(--chat-primary-foreground);
}

.chat-btn.ghost {
    background: #fffcf5; /* 极浅米色，未激活状态 */
    color: var(--chat-text);
    border: 1px solid var(--chat-border);
    box-shadow: none;
}

.chat-btn.ghost:hover {
    background: var(--chat-accent-soft);
    color: var(--chat-text);
}

.chat-btn:hover {
    transform: none; /* 去掉上浮动效，保持稳重 */
}

.chat-thread-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--chat-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.chat-thread-header strong {
    color: var(--chat-text);
    font-size: 13px;
    letter-spacing: normal;
}

.chat-thread-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1 1 0;
    min-height: 0;
    overflow-y: auto;
}

.chat-thread-list li {
    border: 1px solid var(--chat-border);
    border-radius: var(--chat-radius-md);
    padding: 10px;
    background: var(--chat-card);
    cursor: pointer;
    display: flex;
    gap: 10px;
    position: relative;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.chat-thread-list li:hover,
.chat-thread-list li.active {
    border-color: var(--chat-primary);
    box-shadow: var(--chat-shadow-soft);
    background: var(--chat-card);
}

.chat-thread-list li[data-unread="true"] {
    border-color: var(--chat-alert);
    box-shadow: 0 12px 30px rgba(181, 74, 53, 0.25);
}

.chat-thread-avatar {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: var(--chat-muted-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--chat-text);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.chat-thread-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    border-radius: inherit;
}

.chat-thread-avatar:has(img),
.chat-thread-avatar.has-image {
    background: transparent !important;
}

.chat-thread-avatar:has(img) > span,
.chat-thread-avatar.has-image > span {
    display: none;
}

/* 群组九宫格头像 */
.chat-thread-avatar.chat-group-avatars {
    background: transparent;
    padding: 1px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 1px;
}

.chat-thread-avatar.chat-group-avatars .avatar-item {
    width: 100%;
    height: 100%;
    border-radius: 2px;
    overflow: hidden;
    background: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8px;
    font-weight: 600;
    color: #6b7280;
}

.chat-thread-avatar.chat-group-avatars .avatar-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 九宫格不同数量时的显示 */
.chat-thread-avatar.chat-group-avatars[data-count="1"] {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}

.chat-thread-avatar.chat-group-avatars[data-count="2"] {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: 1fr;
}

.chat-thread-avatar.chat-group-avatars[data-count="3"],
.chat-thread-avatar.chat-group-avatars[data-count="4"] {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
}

.chat-thread-avatar.chat-group-avatars[data-count="5"],
.chat-thread-avatar.chat-group-avatars[data-count="6"],
.chat-thread-avatar.chat-group-avatars[data-count="7"],
.chat-thread-avatar.chat-group-avatars[data-count="8"],
.chat-thread-avatar.chat-group-avatars[data-count="9"] {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
}

.chat-thread-avatar::after {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--chat-alert);
    opacity: 0;
    transform: scale(0.5);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.chat-thread-list li[data-unread="true"] .chat-thread-avatar::after {
    opacity: 1;
    transform: scale(1);
    animation: chatPulse 1.8s infinite;
}

.chat-thread-body {
    flex: 1;
    min-width: 0;
}

.chat-thread-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--chat-text);
}

.chat-thread-title-text {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    min-width: 0;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-handle-btn {
    border: 1px solid var(--chat-border);
    background: #ffffff;
    color: var(--chat-muted);
    font-size: 11px;
    line-height: 1.2;
    padding: 2px 8px;
    border-radius: 999px;
    cursor: pointer;
    flex-shrink: 0;
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.chat-handle-btn.is-pending {
    border-color: var(--chat-alert);
    color: var(--chat-alert);
    background: rgba(181, 74, 53, 0.08);
    margin: 0;
}

.chat-handle-btn.is-handled {
    border-color: var(--chat-border);
    color: var(--chat-muted);
    background: rgba(0, 0, 0, 0.02);
    margin: 0;
}

.chat-thread-meta {
    margin-top: 4px;
    font-size: 12px;
    color: #888888;
    display: flex;
    justify-content: space-between;
}

.chat-thread-meta span {
    color: #888888;
}

.chat-badge {
    background: var(--chat-alert);
    color: #fff;
    min-width: 14px;
    height: 14px;
    padding: 0 5px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    line-height: 1;
}

.chat-unread-count {
    background: var(--chat-alert);
    color: #fff;
    min-width: 14px;
    height: 14px;
    padding: 0 5px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    line-height: 1;
}

.chat-unread-dot {
    width: 8px;
    height: 8px;
    background: var(--chat-alert);
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.chat-request-card {
    border: 1px solid var(--chat-border);
    border-radius: 16px;
    padding: 14px;
    background: #ffffff;
}

.chat-empty {
    text-align: center;
    color: var(--chat-muted);
    padding: 12px 0;
    font-size: 13px;
}

.chat-request-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-request-list li {
    border: 1px solid var(--chat-border);
    border-radius: 12px;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.chat-request-actions {
    display: flex;
    gap: 6px;
}

.chat-request-actions button {
    padding: 6px 12px;
    border-radius: 999px;
    border: none;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.chat-request-actions [data-action="accept"] {
    background: var(--chat-accent);
    color: #432006;
}

.chat-request-actions [data-action="reject"] {
    background: rgba(255, 255, 255, 0.2);
    color: var(--chat-text);
}

.chat-stage-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

.chat-stage-heading h2 {
    margin: 0;
    font-size: 24px;
    padding-bottom: 0;
}

.chat-stage-title-row {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.chat-title-wrap {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chat-group-notice-inline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--chat-muted);
    font-size: 13px;
    line-height: 1.4;
}

.chat-group-notice-label-inline {
    font-weight: 600;
    color: var(--chat-text);
}

.chat-group-notice-text-inline {
    color: var(--chat-muted);
}

.chat-conversation-meta-inline {
    color: var(--chat-muted);
    font-size: 13px;
    line-height: 1.4;
}

.chat-stage-heading p {
    margin: 6px 0 0;
    color: var(--chat-muted);
    font-size: 14px;
}

.chat-stage-heading p.is-hidden {
    display: none;
}

.chat-stage-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.chat-stage-actions .chat-link-btn {
    padding: 6px 16px;
    background: rgba(242, 165, 36, 0.16);
    border-radius: 999px;
    color: var(--chat-accent-dark);
    font-weight: 600;
    font-size: 13px;
    box-shadow: 0 10px 22px rgba(249, 94, 61, 0.08);
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.chat-stage-actions .chat-link-btn:hover {
    background: rgba(242, 165, 36, 0.24);
    box-shadow: 0 16px 28px rgba(249, 94, 61, 0.12);
    transform: translateY(-1px);
}

.chat-stage-actions .chat-link-btn:active {
    transform: translateY(0);
}

.chat-link-btn {
    border: none;
    background: none;
    color: var(--chat-accent-soft);
    font-weight: 600;
    cursor: pointer;
}

.chat-pins {
    border: 1px solid var(--chat-border);
    border-radius: var(--chat-radius-md);
    padding: 6px 10px;
    background: #ffffff;
    margin-bottom: 8px;
    display: none;
    max-height: 220px; /* 增加整体高度，内容区更大 */
    overflow: hidden;
}

.chat-pins.is-collapsed .chat-pins-list {
    display: none;
}

.chat-pins-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 2px;
    min-height: 14px;
}

.chat-pins-actions {
    display: flex;
    align-items: center;
}

.chat-pins-meta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--chat-text);
    font-weight: 600;
    font-size: 12px;
}

.chat-pins-icon {
    width: 14px;
    height: 14px;
    border-left: 3px solid var(--chat-primary);
    background: var(--chat-muted-bg);
    border-radius: 4px;
    display: inline-block;
}

.chat-pins-count {
    color: var(--chat-muted);
    font-weight: 500;
    font-size: 12px;
}

/* Note: Using single definition for .chat-pins-actions */

#chatPinsToggleBtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    height: 22px;
    line-height: 1;
    padding: 0 10px;
    margin: 0;
    border: none;
    background: rgba(166, 124, 82, 0.08);
    color: var(--chat-muted);
    font-size: 11px;
    font-weight: 500;
    border-radius: var(--chat-radius-pill);
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}

#chatPinsToggleBtn:hover {
    background: rgba(166, 124, 82, 0.16);
    color: var(--chat-text);
}

.chat-pins-list {
    list-style: none;
    padding: 0;
    margin: 4px 0 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 180px;
    overflow-y: auto;
}

.chat-pin-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border: 1px solid var(--chat-border);
    border-radius: var(--chat-radius-md);
    background: #fff;
}

.chat-pin-body {
    flex: 1 1 auto;
    min-width: 0;
}

.chat-pin-title {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--chat-text);
    font-weight: 600;
    line-height: 1.3;
}

.chat-pin-title .chat-pin-time {
    color: var(--chat-muted);
    font-weight: 500;
    font-size: 11px;
}

.chat-pin-preview {
    margin-top: 2px;
    font-size: 12px;
    color: var(--chat-muted);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
}

.chat-pin-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.chat-pin-btn {
    border: none;
    background: none;
    color: var(--chat-muted) !important;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    padding: 4px 8px;
    margin: 0;
    line-height: 1.2;
    text-decoration: none;
    border-radius: var(--chat-radius-pill);
    transition: background 0.2s ease, color 0.2s ease;
}

.chat-pin-btn:hover {
    background: rgba(166, 124, 82, 0.08);
    color: var(--chat-text) !important;
}

.chat-pin-btn:focus {
    outline: none;
    background: rgba(166, 124, 82, 0.08);
    color: var(--chat-text) !important;
}

.chat-pin-btn.danger {
    color: var(--chat-muted) !important;
}

.chat-pin-btn.danger:hover,
.chat-pin-btn.danger:focus {
    background: rgba(181, 74, 53, 0.08);
    color: var(--chat-alert) !important;
}

.chat-pin-empty {
    padding: 6px 0;
    font-size: 13px;
    color: var(--chat-muted);
}

.chat-message[data-pinned="1"] .chat-message-body {
    box-shadow: inset 0 0 0 1px var(--chat-accent-soft);
}

.chat-message.is-pinned-focus .chat-message-body {
    background: #fff7d6;
    transition: background 0.4s ease;
}

.chat-messages {
    flex: 1 1 0;
    border: 1px solid var(--chat-border);
    border-radius: var(--chat-radius-lg);
    padding: 12px;
    background: #fffcf5 !important; /* 极浅米色，与左侧会话列表保持一致 */
    overflow-y: auto;
    min-height: 0;
    max-height: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative; /* 确保子元素 position() 计算相对于此容器 */
}

.chat-placeholder {
    text-align: center;
    color: var(--chat-muted);
    margin: auto;
}

.chat-message {
    display: flex;
    gap: 10px;
    max-width: 78%;
    align-items: flex-end;
    animation: chatMessageIn 0.35s ease both;
}

.chat-message.me {
    margin-left: auto;
    flex-direction: row-reverse;
    align-items: flex-end;
}

.chat-message-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #f0f3fb;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--chat-text);
    overflow: hidden;
    flex-shrink: 0;
}

.chat-message-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

.chat-message-avatar span {
    display: inline-block;
}

.chat-message.me .chat-message-avatar {
    background: var(--chat-accent);
    color: #432006;
}

.chat-message-avatar.has-image img {
    display: block;
}

.chat-message-avatar.has-image span {
    display: none;
}

.chat-message-body {
    background: var(--chat-bubble);
    border-radius: var(--chat-radius-md);
    padding: 10px 14px;
    flex: 0 1 auto;
    min-width: 120px;
    max-width: 460px;
    display: inline-flex;
    flex-direction: column;
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.05);
    color: var(--chat-text);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.chat-message.me .chat-message-body {
    background: var(--chat-bubble-me);
    color: var(--chat-text);
    box-shadow: none;
    align-items: flex-end;
    max-width: 360px;
    padding: 8px 12px 9px;
}

.chat-message-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--chat-muted);
    gap: 10px;
    font-variant-numeric: tabular-nums;
}

.chat-message.me .chat-message-meta {
    color: rgba(0, 0, 0, 0.5);
}

.chat-message-meta .chat-message-sender {
    font-weight: 600;
    color: rgba(31, 37, 51, 0.85);
}

.chat-message-meta .chat-message-time {
    opacity: 0.9;
}

.chat-message-meta.compact {
    margin-top: 6px;
    font-size: 11px;
    gap: 6px;
    opacity: 0.85;
}

.chat-message-meta.compact .chat-message-sender {
    display: none;
}

.chat-message:not(.me) .chat-message-meta.compact {
    justify-content: flex-start;
}

.chat-message.me .chat-message-meta.compact {
    justify-content: flex-end;
}

.chat-message-body.meta-bottom .chat-message-meta {
    width: 100%;
}

.chat-message-text {
    margin-top: 6px;
    line-height: 1.6;
    font-size: 14px;
    color: var(--chat-text);
}

.chat-message.me .chat-message-text {
    color: var(--chat-text);
}

.chat-message-media {
    margin-top: 10px;
    border-radius: var(--chat-radius-md);
    overflow: hidden;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: #fff;
    max-width: 520px;
}

.chat-message-media.image img {
    display: block;
    width: 100%;
    height: auto;
}

.chat-message-file {
    margin-top: 10px;
    padding: 12px 14px;
    border-radius: var(--chat-radius-md);
    background: rgba(15, 23, 42, 0.05);
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-message-file-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: rgba(15, 23, 42, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--chat-text);
}

.chat-message-file-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 13px;
}

.chat-message-file-info a {
    font-weight: 600;
    color: var(--chat-text);
    text-decoration: none;
}

.chat-message-file-info span {
    font-size: 12px;
    color: var(--chat-muted);
}

/* 工具栏简化 */
.chat-composer-tools {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 2px;
    margin: 2px 0 -20px;
    padding: 0 8px;
    background: transparent;
    border: none;
}

.chat-composer {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 8px 12px;
    margin-top: 0;
    border-radius: 18px;
    border: 1px solid rgba(148, 163, 184, 0.35);
    background: #ffffff;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.chat-composer:focus-within {
    border-color: var(--chat-accent);
    box-shadow: 0 0 0 2px rgba(184, 135, 70, 0.15);
    background-color: #ffffff;
}

.chat-attach-btn {
    border: none;
    background: transparent;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--chat-muted);
    transition: all 0.2s ease;
}

.chat-attach-btn:hover {
    background-color: rgba(166, 124, 82, 0.08);
    color: var(--chat-text);
    transform: none;
    box-shadow: none;
}

.chat-attach-btn:active {
    transform: translateY(0);
    box-shadow: none;
}

.chat-attach-btn.is-busy {
    opacity: 0.5;
    pointer-events: none;
}

.chat-attach-icon {
    width: 20px;
    height: 20px;
    display: inline-block;
    background-size: cover;
    background-position: center;
}

.chat-attach-icon {
    background-image: none;
}

.chat-attach-icon.image::before {
    content: '📷';
    font-size: 20px;
    display: block;
    line-height: 20px;
    text-align: center;
}

.chat-attach-icon.file::before {
    content: '📎';
    font-size: 20px;
    display: block;
    line-height: 20px;
    text-align: center;
}

/* 引用回复预览区域 */
.chat-reply-preview {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    margin: 0 16px 8px;
    background: rgba(148, 163, 184, 0.1);
    border-radius: 8px;
    border-left: 3px solid var(--chat-accent);
    font-size: 13px;
    color: var(--chat-text);
}

.chat-reply-preview.show {
    display: flex;
}

.chat-reply-content {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: 12px;
}

.chat-reply-close {
    background: none;
    border: none;
    color: var(--chat-muted);
    cursor: pointer;
    font-size: 18px;
    padding: 0;
    line-height: 1;
}

.chat-reply-close:hover {
    color: var(--chat-text);
}

/* 消息气泡中的引用样式 */
.chat-message-quote {
    margin-bottom: 6px;
    padding: 6px 10px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 6px;
    border-left: 3px solid var(--chat-accent);
    font-size: 12px;
    color: var(--chat-muted);
    cursor: pointer;
}

.chat-message.me .chat-message-quote {
    background: rgba(0, 0, 0, 0.05);
    border-left-color: var(--chat-accent);
    color: var(--chat-text);
}

.chat-quote-author {
    font-weight: 600;
    margin-right: 4px;
}

.chat-composer textarea {
    flex: 1;
    border: none;
    border-radius: 12px;
    padding: 10px 0;
    background: transparent;
    color: var(--chat-text);
    resize: none;
    min-height: 40px;
    max-height: 150px;
    overflow-y: hidden;
    font-size: 14px;
    line-height: 1.6;
}

.chat-composer textarea::placeholder {
    color: var(--chat-muted);
    opacity: 1;
}

.chat-send-btn {
    border: none;
    background: var(--chat-primary);
    color: var(--chat-primary-foreground);
    border-radius: 999px;
    padding: 9px 18px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    min-height: 36px;
    transition: background-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.chat-send-btn:hover {
    background: #8f6b47;
    box-shadow: 0 6px 18px rgba(166, 124, 82, 0.25);
    transform: translateY(-1px);
}

.chat-send-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(166, 124, 82, 0.18);
}

.chat-send-btn:disabled,
.chat-send-btn.is-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

/* 访客模式下的功能限制提示 */
.chat-guest-hint {
    margin-top: 8px;
    font-size: 12px;
    line-height: 1.6;
    color: var(--chat-muted);
    text-align: right;
}

.chat-column-right .chat-side-panel {
    border: 1px solid var(--chat-border);
    border-radius: var(--chat-radius-md);
    padding: 16px;
    background: #ffffff;
    display: none;
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--chat-shadow-card);
}

.chat-status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px 10px;
    border-radius: 999px;
    background: var(--chat-success-soft);
    color: var(--chat-success);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.03em;
    border: 1px solid rgba(47, 125, 76, 0.18);
}

.chat-column-right .chat-side-panel.active {
    display: flex;
}

.chat-side-panel h3 {
    margin: 0;
    font-size: 16px;
}

.chat-side-panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-side-panel-note {
    font-size: 12px;
    color: var(--chat-muted);
    letter-spacing: 1px;
}

.chat-side-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    height: 100%;
    overflow-y: auto;
}

.chat-side-list li {
    border: 1px solid var(--chat-border);
    border-radius: 14px;
    padding: 10px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    background: #ffffff;
}

.chat-side-list .side-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.chat-side-list button {
    border: none;
    background: var(--chat-accent);
    color: #432006;
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 18px rgba(242, 165, 36, 0.25);
}

.chat-hints {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--chat-muted);
    font-size: 13px;
}

.chat-manage-list {
    overflow-y: auto;
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    grid-auto-rows: 42px;
    row-gap: 10px;
    column-gap: 30px;
}

.chat-manage-card {
    background: #ffffff;
    border-radius: 10px;
    padding: 6px 10px;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    transition: box-shadow 0.2s ease, transform 0.15s ease;
}

.chat-manage-card:hover {
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.1);
    transform: translateY(-1px);
}

.chat-manage-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(242, 165, 36, 0.28), rgba(245, 195, 101, 0.18));
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 0;
}

.chat-manage-card[data-unread="true"]::before {
    opacity: 1;
}

.chat-manage-card > * {
    position: relative;
    z-index: 1;
}

.chat-manage-main {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}

.chat-manage-profile {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}

.chat-manage-initial {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--chat-panel-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--chat-text);
    font-size: 12px;
    flex-shrink: 0;
}

.chat-manage-avatar {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--chat-panel-soft);
    overflow: hidden;
    flex-shrink: 0;
}

.chat-manage-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.chat-manage-meta {
    display: flex;
    flex-direction: column;
    gap: 0;
    min-width: 0;
    flex: 1;
}

.chat-manage-meta strong {
    font-size: 12px;
    color: var(--chat-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.chat-manage-meta small {
    font-size: 10px;
    color: var(--chat-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.chat-manage-badge {
    background: var(--chat-alert);
    color: #fff;
    border-radius: 999px;
    width: fit-content;
    min-width: 16px;
    height: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 600;
    padding: 0 4px;
    flex-shrink: 0;
}

.chat-manage-secondary {
    font-size: 12px;
    color: var(--chat-muted);
}

.chat-manage-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    align-self: stretch;
}

.chat-manage-actions button {
    border: none;
    border-radius: 999px;
    padding: 0 10px;
    margin: 0;
    height: 26px;
    font-size: 10px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(242, 165, 36, 0.15);
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.chat-manage-actions button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(242, 165, 36, 0.25);
}

.chat-manage-actions .is-ghost {
    background: rgba(255, 255, 255, 0.9);
    color: var(--chat-text);
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08);
}

.chat-manage-actions .is-danger {
    background: #ff9080;
    color: #fff;
    box-shadow: 0 16px 30px rgba(255, 144, 128, 0.35);
}

.chat-manage-actions .is-success {
    background: var(--chat-accent);
    color: #432006;
}

.chat-manage-card.is-pinned::before {
    opacity: 1;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(242, 165, 36, 0.45), rgba(255, 215, 130, 0.25));
}

.chat-setting-block {
    border: 1px solid var(--chat-border);
    border-radius: 14px;
    padding: 12px;
}

.chat-setting-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.chat-chip {
    border: none;
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    color: var(--chat-text);
}

.chat-chip.active {
    background: var(--chat-accent);
    color: #432006;
}

.chat-chip.ghost {
    border: 1px solid var(--chat-border);
}

.chat-chip.success,
.chat-chip.completed {
    background: #1bbc9b;
    color: #ffffff;
    border: none;
    box-shadow: 0 8px 18px rgba(27, 188, 155, 0.25);
}

.chat-setting-tip {
    font-size: 12px;
    color: var(--chat-muted);
}

.chat-modal {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.25);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1200;
}

.chat-modal.show {
    display: flex;
}

.chat-modal-content {
    background: #ffffff;
    border-radius: var(--chat-radius-lg);
    border: 1px solid var(--chat-border);
    width: 440px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--chat-shadow-elevated);
}

.chat-modal-header,
.chat-modal-footer {
    padding: 16px 20px;
    border-bottom: 1px solid var(--chat-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-modal-footer {
    border-top: 1px solid var(--chat-border);
    border-bottom: none;
    justify-content: flex-end;
}

.chat-modal-body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
}

.chat-close {
    border: none;
    background: none;
    color: var(--chat-muted);
    font-size: 22px;
    cursor: pointer;
}

.chat-inline-search {
    display: flex;
    gap: 8px;
}

.chat-inline-search input {
    flex: 1;
    border: 1px solid var(--chat-border);
    border-radius: 999px;
    padding: 10px 14px;
    background: #f7f8fd;
    color: var(--chat-text);
}

.chat-modal-tip {
    margin: 0;
    color: var(--chat-muted);
    font-size: 12px;
}

.chat-modal-profile .chat-modal-body {
    gap: 16px;
}

.chat-avatar-upload {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 8px;
}

.chat-avatar-preview {
    width: 100px;
    height: 100px;
    border-radius: 20px;
    background: #f3f5fb;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.chat-avatar-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

.chat-avatar-preview img.show {
    display: block;
}

.chat-avatar-fallback {
    font-size: 28px;
    font-weight: 600;
    color: #9aa3c0;
}

.chat-upload-actions {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.chat-upload-hint {
    margin: 0;
    font-size: 12px;
    color: var(--chat-muted);
}

.chat-form-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 13px;
    color: var(--chat-text);
}

.chat-form-field input {
    border: 1px solid var(--chat-border);
    border-radius: 8px;
    padding: 8px 12px;
    background: var(--chat-panel-soft);
    color: var(--chat-text);
    font-size: 14px;
}

.chat-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
}

.chat-modal-list {
    border: 1px solid var(--chat-border);
    border-radius: 12px;
    padding: 10px;
    max-height: 300px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-modal-list .search-result {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--chat-radius-md);
    background: var(--chat-card);
    border: 1px solid var(--chat-border);
    transition: all 0.2s ease;
    margin-bottom: 8px;
}

.chat-modal-list .search-result:last-child {
    margin-bottom: 0;
}

.chat-modal-list .search-result:hover {
    border-color: var(--chat-primary);
    box-shadow: var(--chat-shadow-soft);
    transform: translateY(-1px);
}

.search-avatar {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--chat-muted-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
    font-weight: 600;
    color: var(--chat-primary);
    font-size: 14px;
}

.search-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.search-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.search-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--chat-text);
    display: flex;
    align-items: center;
    gap: 6px;
}

.search-status-tag {
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 4px;
    background: var(--chat-alert-soft);
    color: var(--chat-alert);
    font-weight: 500;
}

.search-meta {
    font-size: 12px;
    color: var(--chat-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-action {
    flex-shrink: 0;
}

/* Small button variant for search results */
.chat-btn-sm {
    border: none;
    border-radius: var(--chat-radius-pill);
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 28px;
}

.chat-btn-sm.primary {
    background: var(--chat-primary);
    color: var(--chat-primary-foreground);
}

.chat-btn-sm.primary:hover {
    background: #8f6b47;
    box-shadow: 0 2px 8px rgba(166, 124, 82, 0.2);
}

.chat-btn-sm.disabled {
    background: var(--chat-muted-bg);
    color: var(--chat-muted);
    cursor: not-allowed;
}

.chat-toast {
    position: fixed;
    bottom: 40px;
    right: 40px;
    background: rgba(12, 24, 52, 0.95);
    color: #fff;
    padding: 12px 20px;
    border-radius: 20px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1500;
}

.chat-toast.show {
    opacity: 1;
    transform: translateY(0);
}

@keyframes chatPulse {
    0% {
        transform: scale(0.5);
        opacity: 0.8;
    }
    70% {
        transform: scale(1.4);
        opacity: 0;
    }
    100% {
        opacity: 0;
    }
}

@keyframes fadeSlideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-member-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-member-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    border: 1px solid var(--chat-border);
    border-radius: 12px;
    background: #fff;
    font-size: 14px;
}

.chat-member-role {
    font-size: 12px;
    color: var(--chat-muted);
}

/* 会话列表项操作按钮 */
.chat-thread-item {
    position: relative;
    transition: all 0.2s ease;
}

.chat-thread-item:hover .chat-thread-actions {
    opacity: 1;
    visibility: visible;
}

.chat-thread-item.is-pinned {
    background: rgba(242, 165, 36, 0.08);
    border-left: 3px solid var(--chat-accent);
}

/* 状态图标样式（置顶、免扰） */
.chat-status-icon {
    font-size: 10px;
    margin-right: 2px;
    opacity: 0.8;
}

.chat-thread-actions {
    display: none !important; /* 隐藏会话列表操作按钮 */
}

.chat-action-btn {
    border: none;
    background: transparent;
    padding: 6px 8px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    transition: background 0.15s ease, transform 0.15s ease;
}

.chat-action-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    transform: scale(1.1);
}

.chat-action-btn:active {
    transform: scale(0.95);
}

/* 未读消息徽章动画 */
.chat-badge {
    display: inline-block;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: #f95e3d;
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    border-radius: 9px;
    text-align: center;
    line-height: 18px;
    animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* 群成员操作 */
.chat-member-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--chat-border);
    border-radius: 12px;
    background: #fff;
    transition: all 0.2s ease;
}

.chat-member-item:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

.chat-member-info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.chat-member-name {
    font-weight: 600;
    font-size: 14px;
}

.chat-member-actions {
    display: flex;
    gap: 8px;
}

.chat-btn-sm {
    border: none;
    border-radius: 8px;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    background: rgba(242, 165, 36, 0.1);
    color: var(--chat-accent);
}

.chat-btn-sm:hover {
    background: rgba(242, 165, 36, 0.2);
    transform: translateY(-1px);
}

.chat-btn-sm.danger {
    background: rgba(249, 94, 61, 0.1);
    color: #f95e3d;
}

.chat-btn-sm.danger:hover {
    background: rgba(249, 94, 61, 0.2);
}

/* 消息发送动画 */
.chat-message {
    animation: messageSlideIn 0.3s ease;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes chatMessageIn {
    0% {
        opacity: 0;
        transform: translateY(12px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 模态框动画优化 */
.chat-modal {
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.chat-modal.show {
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.chat-modal-content {
    animation: modalSlideUp 0.3s ease;
}

.chat-modal.show .chat-modal-content {
    animation: modalSlideUp 0.3s ease;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Toast 通知动画 */
.chat-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(0, 0, 0, 0.85);
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.chat-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* 响应式设计优化 */
@media (max-width: 1200px) {
    .chat-layout {
        grid-template-columns: 200px 1fr 200px;
        gap: 16px;
        padding: 16px;
    }

    .chat-thread-actions {
        opacity: 1;
        visibility: visible;
    }
}

@media (max-width: 1024px) {
    .chat-layout {
        grid-template-columns: 1fr;
    }

    .chat-column-right {
        display: none;
    }

    .chat-column-right.active {
        display: flex;
    }

    .chat-thread-actions {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: transparent;
    }
}

@media (max-width: 768px) {
    .chat-topbar-main {
        flex-direction: column;
        align-items: stretch;
    }

    .chat-topbar-controls {
        flex-direction: column;
        gap: 12px;
    }

    .chat-topnav {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .chat-layout {
        padding: 12px;
        gap: 12px;
    }

    .chat-column {
        padding: 16px;
        border-radius: 16px;
    }

    .chat-messages {
        min-height: 300px;
    }

    .chat-composer {
        flex-wrap: wrap;
    }

    .chat-action-btn {
        padding: 8px;
        font-size: 16px;
    }

    .chat-stage-heading {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .chat-stage-actions {
        width: 100%;
        gap: 8px;
    }

    .chat-stage-actions .chat-link-btn {
        flex: 1;
        text-align: center;
    }

    .chat-message {
        max-width: 92%;
    }

    .chat-message.me .chat-message-body {
        max-width: 80vw;
    }
}

/* 加载动画 */
.chat-loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(242, 165, 36, 0.3);
    border-top-color: var(--chat-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 平滑滚动 */
/* .chat-messages, */
.chat-thread-list {
    scroll-behavior: smooth;
}

/* 选中状态 */
.chat-thread-list li.active {
    background: rgba(242, 165, 36, 0.15);
    border-left: 3px solid var(--chat-accent);
}

/* 附件上传进度 */
.chat-attach-btn.is-busy {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.chat-attach-btn.is-busy::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid rgba(242, 165, 36, 0.3);
    border-top-color: var(--chat-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@media (max-width: 1200px) {
    .chat-layout {
        grid-template-columns: 230px 1fr 230px;
        padding: 24px;
    }
    .chat-topbar-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    .chat-top-actions {
        width: 100%;
        justify-content: flex-start;
    }
}

@media (max-width: 1024px) {
    .chat-topbar-main {
        flex-direction: column;
        align-items: flex-start;
        gap: 18px;
    }
    .chat-topbar-controls {
        width: 100%;
    }
    .chat-top-actions {
        width: 100%;
        justify-content: flex-start;
    }
    .chat-layout {
        grid-template-columns: 1fr;
    }

    .chat-column-right .chat-side-panel {
        display: none;
    }

    .chat-column-right .chat-side-panel.active {
        display: flex;
    }
}

@media (max-width: 900px) {
    .chat-topnav {
        flex: 1 1 100%;
        order: 3;
    }

    .chat-top-actions {
        order: 2;
        justify-content: flex-start;
    }
}

@media (max-width: 640px) {
    body.chat-page #main .inner-wrap,
    body.chat-page #primary {
        padding: 0 16px;
    }

    .chat-topnav {
        justify-content: flex-start;
    }

    .chat-top-search {
        flex-direction: column;
        align-items: stretch;
    }

    .chat-composer {
        flex-direction: column;
    }

    .chat-composer-tools {
        flex-direction: row;
        justify-content: flex-start;
        gap: 8px;
        margin-bottom: 8px;
    }
}

/* --- Chat Add-ons: notice, recall, emoji, voice --- */
.chat-group-notice {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    border: 1px solid rgba(242, 165, 36, 0.28);
    border-radius: 16px;
    background: rgba(242, 165, 36, 0.12);
    margin-bottom: 16px;
}

.chat-group-notice-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chat-group-notice-label {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    color: #a56408;
    text-transform: uppercase;
}

.chat-group-notice-text {
    margin: 0;
    font-size: 13px;
    color: #51320f;
    line-height: 1.6;
    word-break: break-word;
}

.chat-group-notice .chat-link-btn.edit {
    color: #a56408;
    font-weight: 600;
}

.chat-message-body.is-recalled {
    background: rgba(148, 163, 184, 0.12);
    color: var(--chat-muted);
    box-shadow: none;
    padding: 6px 10px;
    font-size: 13px;
    display: block;
    min-width: auto;
    max-width: 320px;
}

.chat-message-recalled {
    margin: 0;
    font-size: 12px;
    font-style: italic;
    color: var(--chat-muted);
}

.chat-message-actions {
    margin-top: 10px;
    text-align: right;
}

.chat-message-action {
    border: none;
    background: none;
    color: var(--chat-accent-dark);
    cursor: pointer;
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 12px;
    transition: background 0.15s ease, color 0.15s ease;
}

.chat-message-action:hover {
    background: rgba(242, 165, 36, 0.15);
    color: #8a5a00;
}

.chat-message-audio {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 10px 14px;
    border-radius: 16px;
    background: rgba(15, 23, 42, 0.06);
    cursor: pointer;
    transition: background 0.2s ease, box-shadow 0.2s ease;
}

.chat-message.me .chat-message-audio {
    background: rgba(255, 255, 255, 0.45);
}

.chat-message-audio:hover {
    box-shadow: 0 12px 26px rgba(15, 23, 42, 0.12);
}

.chat-message-audio audio {
    display: none;
}

.chat-audio-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--chat-accent-dark);
    font-size: 16px;
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.16);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    cursor: pointer;
    margin: 0;
}

.chat-audio-btn::before {
    content: '\25B6';
    margin-left: 2px;
}

.chat-message-audio.is-playing .chat-audio-btn::before {
    content: '\275A\275A';
    margin-left: 0;
    font-size: 13px;
}

.chat-message-audio.is-playing .chat-audio-btn {
    transform: scale(1.05);
    box-shadow: 0 14px 26px rgba(15, 23, 42, 0.2);
}

.chat-audio-track {
    position: relative;
    flex: 1;
    height: 6px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.12);
    overflow: hidden;
}

.chat-audio-progress {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0%;
    border-radius: inherit;
    background: var(--chat-accent);
    transition: width 0.1s linear;
}

.chat-message.me .chat-audio-track {
    background: rgba(0, 0, 0, 0.12);
}

.chat-message.me .chat-audio-progress {
    background: #b77700;
}

.chat-audio-duration {
    font-size: 12px;
    color: var(--chat-muted);
    white-space: nowrap;
}

.chat-invite-list {
    max-height: 320px;
    overflow-y: auto;
    display: grid;
    gap: 10px;
}

.chat-invite-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-radius: 16px;
    background: rgba(15, 23, 42, 0.04);
    transition: background 0.2s ease, transform 0.2s ease;
}

.chat-invite-item:hover {
    background: rgba(242, 165, 36, 0.12);
    transform: translateY(-1px);
}

.chat-invite-item.is-selected {
    background: rgba(242, 165, 36, 0.18);
    border: 1px solid var(--chat-accent);
}

.chat-invite-item label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
    color: var(--chat-text);
}

.chat-invite-item input {
    width: 16px;
    height: 16px;
}

.chat-invite-item small {
    color: var(--chat-muted);
    font-size: 12px;
    margin-left: auto;
    padding-left: 16px;
}

.chat-invite-empty {
    text-align: center;
    color: var(--chat-muted);
    padding: 28px 0;
    font-size: 14px;
}

.chat-emoji-panel {
    position: absolute;
    bottom: auto;
    left: 0;
    top: -280px;
    display: none;
    flex-wrap: wrap;
    width: 260px;
    max-height: 220px;
    overflow-y: auto;
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.16);
    padding: 12px;
    gap: 6px;
    z-index: 30;
}

.chat-emoji-panel.is-active {
    display: flex;
}

.chat-emoji-panel button {
    border: none;
    background: transparent;
    font-size: 20px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    line-height: 32px;
    text-align: center;
    border-radius: 8px;
    transition: background 0.15s ease;
}

.chat-emoji-panel button:hover {
    background: rgba(242, 165, 36, 0.2);
}

.chat-mention-panel {
    position: absolute;
    bottom: auto;
    left: 0;
    top: -260px;
    display: none;
    flex-direction: column;
    width: 320px;
    max-height: 240px;
    overflow-y: auto;
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.16);
    padding: 8px;
    gap: 6px;
    z-index: 40;
}

.chat-mention-panel.is-active {
    display: flex;
}

.chat-mention-panel button[data-mention-type] {
    border: none;
    background: transparent;
    text-align: left;
    padding: 8px 10px;
    border-radius: 12px;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--chat-text);
    transition: background 0.15s ease;
    width: 100%;
    box-sizing: border-box;
    justify-content: flex-start;
}

.chat-mention-panel button[data-mention-type]:hover {
    background: rgba(166, 124, 82, 0.08);
}

.chat-mention-empty {
    padding: 16px 10px;
    font-size: 13px;
    color: var(--chat-muted);
}

.chat-mention-pill {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 999px;
    background: rgba(166, 124, 82, 0.2);
    color: var(--chat-accent-dark);
    font-size: 12px;
    margin-right: 6px;
    margin-top: 4px;
}

.chat-attach-btn.danger {
    background: var(--chat-alert);
    color: var(--chat-alert-foreground);
    box-shadow: 0 14px 24px rgba(181, 74, 53, 0.35);
}

.chat-attach-btn.danger:hover {
    background: #9a3d2a;
}

/* 已禁用：这些伪元素会插入彩色 emoji 图标，与 SVG 图标冲突
.chat-attach-icon.emoji::before {
    content: '\1f60a';
    font-size: 18px;
}

.chat-attach-icon.mention::before {
    content: '@';
    font-size: 18px;
    font-weight: 700;
}

.chat-attach-icon.voice::before {
    content: '\1f3a4';
    font-size: 18px;
}

.chat-attach-icon.stop::before {
    content: '\25a0';
    font-size: 14px;
    line-height: 1;
}
*/

.chat-voice-indicator {
    position: absolute;
    bottom: auto;
    right: 6px;
    top: -78px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: rgba(255, 119, 106, 0.95);
    color: #fff;
    border-radius: 999px;
    box-shadow: 0 18px 45px rgba(255, 119, 106, 0.3);
    z-index: 30;
}

.chat-voice-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #fff;
    animation: chatPulseDot 1.2s infinite ease-in-out;
}

.chat-voice-text {
    font-size: 13px;
    letter-spacing: 1px;
}

.chat-voice-timer {
    font-weight: 600;
}

@keyframes chatPulseDot {
    0%, 100% { transform: scale(0.9); opacity: 0.7; }
    50% { transform: scale(1.2); opacity: 1; }
}
/* --- End chat add-ons --- */

/* 强制隐藏聊天输入工具区中的所有彩色图标，只保留 SVG 线性图标 */
.chat-composer-tools img,
.chat-composer-tools .chat-attach-icon::before,
.chat-composer-tools .chat-attach-icon::after {
    display: none !important;
    content: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    width: 0 !important;
    height: 0 !important;
}

/* 确保 SVG 图标正常显示 */
.chat-composer-tools .chat-icon-svg {
    display: inline-block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* 操作按钮样式（置顶、删除、退出等） */
.chat-thread-actions {
    display: flex;
    gap: 4px;
    align-items: center;
}

.chat-action-btn {
    border: none;
    background: transparent;
    padding: 4px 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background 0.15s ease;
    color: var(--chat-muted);
}

.chat-action-btn:hover {
    background: rgba(166, 124, 82, 0.08);
    color: var(--chat-text);
}

.chat-action-btn .chat-icon-svg {
    width: 14px;
    height: 14px;
    display: inline-block;
    flex-shrink: 0;
}

/* 按钮中的 SVG 图标样式（添加好友、建立群组等） */
.chat-btn .chat-icon-svg,
.chat-left-actions .chat-icon-svg {
    width: 16px;
    height: 16px;
    display: inline-block;
    flex-shrink: 0;
    vertical-align: middle;
    margin-right: 6px;
}

.chat-conversation-tag {
    background: rgba(166, 124, 82, 0.18);
    color: var(--chat-primary);
    border-radius: 8px;
    padding: 2px 6px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 8px;
}

.chat-manage-actions-inline {
    margin-top: 16px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.chat-manage-actions-inline .chat-link-btn {
    background: rgba(166, 124, 82, 0.1);
    border-radius: 999px;
    padding: 6px 14px;
    color: var(--chat-primary);
}

.chat-manage-actions-inline .chat-link-btn:hover {
    background: rgba(166, 124, 82, 0.2);
}

/* === @ 提醒相关样式 === */
.chat-message-body .chat-mention-pill {
    display: inline-block;
    padding: 0 4px;
    margin: 0 1px;
    border-radius: 4px;
    background: rgba(227, 148, 62, 0.12);
    color: #b86a1b;
    font-weight: 600;
}

/* 被 @ 的消息整体高亮（仅对当前登录用户生效，逻辑在 JS 中判断） */
.chat-message.mention-me .chat-message-body {
    background: linear-gradient(90deg, rgba(250, 220, 180, 0.65), rgba(255, 255, 255, 0.95));
    border-left: 3px solid #f2a15c;
}


/* Background blurry blobs for chat app - DISABLED to fix visual artifacts */
.chat-app::before,
.chat-app::after {
    display: none; /* 禁用以修复白色光晕问题 */
    content: '';
    position: absolute;
    width: 461.59px;
    height: 314px;
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    filter: blur(60px);
}

.chat-app::before {
    background: rgb(255, 249, 240);
    top: -78.5px;
    left: -115.4px;
}

.chat-app::after {
    background: rgb(240, 248, 255);
    bottom: -78.5px;
    right: -115.4px;
}

.chat-topnav-item {
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 0 12px;
    font-weight: 500;
    font-size: 13px;
    background: transparent;
    color: var(--chat-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    min-width: 64px;
    height: 34px; /* 明确设置高度以填满容器 (38px - 4px padding) */
    white-space: nowrap;
}

/* 会话列表滚动条样式 */
#chatConversationList {
    max-height: 560px; /* 超过7个会话项才出现滚动条 */
    overflow-y: auto;
    overflow-x: hidden;
    list-style: none;
    margin: 0;
    padding: 0;
}

#chatConversationList::-webkit-scrollbar {
    width: 6px;
}

#chatConversationList::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.03);
    border-radius: 3px;
}

#chatConversationList::-webkit-scrollbar-thumb {
    background: rgba(242, 165, 36, 0.3);
    border-radius: 3px;
}

#chatConversationList::-webkit-scrollbar-thumb:hover {
    background: rgba(242, 165, 36, 0.5);
}

/* Group Management Menu */
.chat-group-management-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--chat-card);
    border: 1px solid var(--chat-border);
    border-radius: var(--chat-radius-md);
    box-shadow: var(--chat-shadow-elevated);
    min-width: 160px;
    z-index: 100;
    display: none;
    flex-direction: column;
    padding: 4px;
}

.chat-group-management-menu.show {
    display: flex;
    animation: fadeSlideDown 0.2s ease;
}

.chat-group-management-item {
    padding: 8px 12px;
    font-size: 13px;
    color: var(--chat-text);
    cursor: pointer;
    border-radius: var(--chat-radius-pill);
    transition: background 0.15s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.chat-group-management-item:hover {
    background: rgba(166, 124, 82, 0.08);
}

.chat-group-management-item.is-danger {
    color: var(--chat-alert);
    background: transparent;
    box-shadow: none;
    justify-content: flex-start;
}

.chat-group-management-item.is-danger:hover {
    background: var(--chat-alert-soft);
}

/* Member Role Badges */
.chat-member-role-badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    margin-left: 6px;
    vertical-align: middle;
}

.chat-member-role-badge.owner {
    background: var(--chat-primary);
    color: #fff;
}

.chat-member-role-badge.admin {
    background: var(--chat-accent);
    color: var(--chat-accent-dark);
}

/* Member List Actions */
.chat-member-actions {
    display: flex;
    gap: 4px;
    margin-left: auto;
}

.chat-member-action-btn {
    border: 1px solid var(--chat-border);
    background: transparent;
    color: var(--chat-muted);
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.chat-member-action-btn:hover {
    background: var(--chat-muted-bg);
    color: var(--chat-text);
}

.chat-member-action-btn.is-danger {
    border-color: var(--chat-alert);
    color: var(--chat-alert);
    background: transparent;
    box-shadow: none;
}

.chat-member-action-btn.is-danger:hover {
    background: var(--chat-alert);
    color: #fff;
}

/* Notification Styles */
.chat-notify-item.is-read,
.chat-notify-card.is-read {
    opacity: 0.5;
    filter: grayscale(0.2);
}

.chat-notify-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--chat-border);
    transition: background 0.2s;
}

.chat-notify-item:last-child {
    border-bottom: none;
}

.chat-notify-item:hover {
    background: rgba(0, 0, 0, 0.02);
}

.chat-notify-main {
    flex: 1;
    font-size: 14px;
    color: var(--chat-text);
    line-height: 1.5;
}

.chat-notify-actions {
    display: flex;
    gap: 8px;
    margin-left: 12px;
}

/* System Notification Specifics */
.chat-notify-item.system-notification .chat-notify-main {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Audit view adjustments */
.chat-main-panel[data-main-panel="audit"] {
    min-height: 0;
}
.chat-main-panel[data-main-panel="notifications"] button {margin-bottom: 0;}
.chat-audit-body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
    min-height: 0;
}
.chat-audit-list-wrap {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding-right: 4px;
}
.chat-audit-item {
    align-items: flex-start;
}
.chat-audit-item .audit-content {
    word-break: break-all;
    white-space: normal;
}
.chat-audit-item .chat-notify-main {
    max-width: 100%;
}
.chat-audit-item .chat-notify-actions {
    margin-left: 0;
    margin-top: 6px;
    flex-wrap: wrap;
}
.chat-audit-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    font-size: 12px;
    color: var(--chat-muted);
}
.chat-audit-pagination button {
    min-width: 86px;
}
.chat-audit-pagination button[disabled] {
    opacity: 0.55;
    cursor: not-allowed;
}
.chat-audit-page-info {
    flex: 1;
    text-align: center;
    color: var(--chat-text);
    font-weight: 500;
}

.chat-notify-content {
    font-weight: 500;
}

.chat-notify-time {
    font-size: 12px;
    color: var(--chat-muted);
}

/* === 新建群聊模态框美化样式 === */
/* 修复关闭按钮样式：移除绿色背景，使用主题配色 */
.chat-modal .chat-close {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: transparent;
    color: var(--chat-muted);
    border: none;
    font-size: 20px;
    font-weight: 400;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    line-height: 1;
}

.chat-modal .chat-close:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--chat-text);
}

/* 模态框头部优化 */
.chat-modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--chat-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(to bottom, rgba(255, 252, 245, 0.8), transparent);
}

.chat-modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--chat-text);
    letter-spacing: -0.01em;
}

/* 模态框主体优化 */
.chat-modal-body {
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
}

/* 表单标签样式 */
.chat-modal-body > label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--chat-text);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

/* 表单输入框样式 */
.chat-modal-body > input[type="text"],
.chat-modal-body input#chatGroupName {
    width: 100%;
    border: 1px solid var(--chat-border);
    border-radius: var(--chat-radius-md);
    padding: 12px 14px;
    font-size: 14px;
    color: var(--chat-text);
    background: var(--chat-panel-soft);
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.chat-modal-body > input[type="text"]:focus,
.chat-modal-body input#chatGroupName:focus {
    outline: none;
    border-color: var(--chat-ring);
    background: var(--chat-card);
    box-shadow: 0 0 0 3px rgba(166, 124, 82, 0.12);
}

.chat-modal-body > input[type="text"]::placeholder,
.chat-modal-body input#chatGroupName::placeholder {
    color: var(--chat-muted);
    opacity: 0.7;
}

/* 好友选择列表样式优化 */
#chatGroupFriendCheckboxes {
    border: 1px solid var(--chat-border);
    border-radius: var(--chat-radius-md);
    padding: 8px;
    max-height: 220px;
    overflow-y: auto;
    background: var(--chat-panel-soft);
}

#chatGroupFriendCheckboxes::-webkit-scrollbar {
    width: 5px;
}

#chatGroupFriendCheckboxes::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.02);
    border-radius: 3px;
}

#chatGroupFriendCheckboxes::-webkit-scrollbar-thumb {
    background: var(--chat-accent);
    border-radius: 3px;
    opacity: 0.6;
}

/* 好友选择项样式 */
#chatGroupFriendCheckboxes label {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--chat-radius-pill);
    cursor: pointer;
    transition: all 0.15s ease;
    font-size: 14px;
    color: var(--chat-text);
    margin-bottom: 4px;
}

#chatGroupFriendCheckboxes label:last-child {
    margin-bottom: 0;
}

#chatGroupFriendCheckboxes label:hover {
    background: rgba(166, 124, 82, 0.08);
}

/* 自定义复选框样式 */
#chatGroupFriendCheckboxes input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    border: 2px solid var(--chat-border);
    background: var(--chat-card);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    position: relative;
    transition: all 0.15s ease;
    flex-shrink: 0;
}

#chatGroupFriendCheckboxes input[type="checkbox"]:checked {
    background: var(--chat-primary);
    border-color: var(--chat-primary);
}

#chatGroupFriendCheckboxes input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: 600;
}

#chatGroupFriendCheckboxes input[type="checkbox"]:hover {
    border-color: var(--chat-primary);
}

/* 模态框底部优化 */
.chat-modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--chat-border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    background: linear-gradient(to top, rgba(245, 241, 230, 0.5), transparent);
}

/* 确保新建群聊模态框的按钮样式 */
#chatGroupModal .chat-btn.primary {
    background: var(--chat-primary);
    color: var(--chat-primary-foreground);
    border: none;
    padding: 10px 24px;
    border-radius: var(--chat-radius-pill);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(166, 124, 82, 0.25);
}

#chatGroupModal .chat-btn.primary:hover {
    background: var(--chat-accent-dark);
    box-shadow: 0 4px 12px rgba(166, 124, 82, 0.35);
    transform: translateY(-1px);
}

#chatGroupModal .chat-btn.primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(166, 124, 82, 0.2);
}


/* Search Results Styles (View Groups / Add Friend) */
.search-result {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--chat-border);
    transition: background 0.2s ease;
    gap: 12px;
}

.search-result:last-child {
    border-bottom: none;
}

.search-result:hover {
    background: rgba(166, 124, 82, 0.05);
}

.search-avatar {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--chat-muted-bg);
    flex-shrink: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.search-avatar .avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--chat-text);
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 600;
    color: var(--chat-muted);
    background: var(--chat-muted-bg);
}

.search-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.search-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--chat-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-meta {
    font-size: 12px;
    color: var(--chat-muted);
}

.search-action {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.search-action .chat-btn.small {
    padding: 6px 14px;
    font-size: 12px;
    height: auto;
    min-height: 28px;
}

.search-empty {
    padding: 32px;
    text-align: center;
    color: var(--chat-muted);
    font-size: 14px;
}

.chat-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--chat-accent);
    color: var(--chat-primary-foreground);
    font-size: 11px;
    font-weight: 600;
}

/* 日期分隔线 */
.chat-date-divider {
    display: flex;
    justify-content: center;
    margin: 24px 0 12px;
    width: 100%;
    pointer-events: none;
    animation: fadeIn 0.3s ease;
}

.chat-date-divider span {
    background: rgba(0, 0, 0, 0.06);
    color: #8890a0;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 头像备用样式：当图片加载失败时显示首字母 */
.avatar-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: var(--chat-muted-bg);
    color: var(--chat-muted);
    font-size: 14px;
    font-weight: 600;
    border-radius: inherit;
    text-transform: uppercase;
}

/* 九宫格头像中的备用样式 */
.avatar-item .avatar-fallback {
    font-size: 10px;
    background: rgba(0, 0, 0, 0.08);
    color: #888;
}

/* Audio Progress Bar Fix */
.chat-audio-track {
    position: relative;
    flex: 1;
    height: 3px;
    background: rgba(0,0,0,0.1);
    border-radius: 99px;
    overflow: hidden;
    margin: 0 10px;
}
.chat-audio-progress {
    display: block;
    height: 100%;
    background-color: var(--chat-primary);
    width: 0%;
    border-radius: 99px;

    transition: width 0.1s linear;
}

/* 补充缺失的音频播放器基础样式 */
.chat-message-audio {
    display: flex;
    align-items: center;
    width: 200px;
    height: 36px;
    gap: 8px;
    padding: 0 4px;
    box-sizing: border-box;
}

.chat-audio-btn {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background-color: var(--chat-primary);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23ffffff'%3E%3Cpath d='M8 5v14l11-7z'/%3E%3C/svg%3E");
    background-size: 50%;
    background-repeat: no-repeat;
    background-position: center 50%;
    cursor: pointer;
    flex-shrink: 0;
    transition: transform 0.1s ease, background-color 0.2s;
    padding: 0;
}

.chat-audio-btn:hover {
    transform: scale(1.05);
    background-color: var(--chat-accent);
}

.chat-message-audio.is-playing .chat-audio-btn {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23ffffff'%3E%3Cpath d='M6 6h4v12H6zm8 0h4v12h-4z'/%3E%3C/svg%3E");
}

.chat-audio-duration {
    font-size: 12px;
    font-variant-numeric: tabular-nums;
    color: var(--chat-muted);
    min-width: 32px;
    text-align: right;
    white-space: nowrap;
}

/* =========================================
   图片灯箱 (Lightbox) 样式
   ========================================= */
.chat-image-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    display: none;
    align-items: center;
    justify-content: center;
}

.chat-image-lightbox.is-active {
    display: flex;
}

.chat-lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    cursor: pointer;
}

.chat-lightbox-image {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    cursor: pointer;
    z-index: 1;
}

.chat-lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 28px;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, transform 0.2s ease;
    z-index: 2;
}

.chat-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

/* 禁止页面滚动（当 lightbox 打开时） */
body.chat-lightbox-open {
    overflow: hidden;
}

/* 消息内的图片添加可点击提示 */
.chat-message-media.image {
    cursor: pointer;
}

.chat-message-media.image:hover img {
    opacity: 0.9;
    transition: opacity 0.2s ease;
}

/* 图片放大状态 */
.chat-image-lightbox.is-zoomed {
    overflow: auto; /* 允许滚动查看大图 */
}

.chat-image-lightbox.is-zoomed .chat-lightbox-image {
    max-width: none;
    max-height: none;
    cursor: zoom-out;
    transition: transform 0.2s ease;
}

/* 默认状态下显示放大光标提示 */
.chat-lightbox-image {
    cursor: zoom-in;
    transition: transform 0.2s ease;
}

/* 移动端优化：添加触摸提示 */
@media (hover: none) {
    .chat-lightbox-image {
        cursor: default;
    }
    .chat-image-lightbox.is-zoomed .chat-lightbox-image {
        cursor: default;
    }
}