/* =====================================================================
 * 趣绮梦 Chat 主样式表
 *
 * 设计取向：
 *   - 主色 #FF6633（暖橙）+ 辅助 #FF9966 渐变
 *   - 背景：奶白 #FAFAFA + 浅灰卡片
 *   - 暗色模式：跟随系统 prefers-color-scheme
 *   - 字体：中文系统字体 + 数字英文用 Sora
 * 布局：
 *   - 桌面：导航栏 64px + 会话列表 320px + 主区域 + 详情面板
 *   - 平板：导航栏 + 会话列表 + 主区域
 *   - 手机：单栏切换
 * ===================================================================== */

/* ============== 变量 ============== */
:root {
    --color-primary: #FF6633;
    --color-primary-dark: #E55525;
    --color-primary-soft: #FFEDE3;
    --color-accent: #FF9966;
    --color-text-1: #1F2937;
    --color-text-2: #4B5563;
    --color-text-3: #9CA3AF;
    --color-bg: #FAFAFA;
    --color-bg-card: #FFFFFF;
    --color-surface: #FFFFFF;
    --color-bg-hover: #F3F4F6;
    --color-border: #E5E7EB;
    --color-text: #1F2937;
    --color-muted: #9CA3AF;
    --color-me: #FF6633;
    --color-danger: #EF4444;
    --color-success: #22C55E;

    --shadow-sm: 0 1px 2px rgba(15,23,42,0.04), 0 1px 3px rgba(15,23,42,0.06);
    --shadow-md: 0 4px 12px rgba(15,23,42,0.08);
    --shadow-lg: 0 20px 40px rgba(15,23,42,0.16);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-pill: 999px;

    --font-body: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    --font-num: "Sora", "HarmonyOS Sans SC", system-ui, sans-serif;

    --rail-width: 72px;
    --sidebar-width: 320px;
    --detail-width: 320px;

    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-text-1: #F3F4F6;
        --color-text-2: #D1D5DB;
        --color-text-3: #6B7280;
        --color-bg: #0F1115;
        --color-bg-card: #1A1D24;
        --color-surface: #1A1D24;
        --color-bg-hover: #242832;
        --color-border: #2A2F3A;
        --color-text: #F3F4F6;
        --color-muted: #6B7280;
        --color-primary-soft: rgba(255,102,51,0.16);
    }
}

/* ============== 重置 ============== */
*, *::before, *::after { box-sizing: border-box; }
html, body {
    margin: 0; padding: 0;
    height: 100%; width: 100%;
    font-family: var(--font-body);
    color: var(--color-text-1);
    background: var(--color-bg);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
input, textarea { font-family: inherit; color: inherit; }
img { display: block; max-width: 100%; }
a { color: var(--color-primary); text-decoration: none; }
[hidden] { display: none !important; }

/* ============== 启动屏 ============== */
.qm-boot-screen {
    position: fixed; inset: 0;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 18px;
    background: radial-gradient(120% 100% at 50% 0%, #FFEDE3 0%, #FAFAFA 60%);
    z-index: 100;
    transition: opacity .4s ease;
}
.qm-boot-screen.hide { opacity: 0; pointer-events: none; }
.qm-boot-logo {
    width: 88px; height: 88px;
    border-radius: 24px;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-lg);
    animation: qm-pulse 2s ease-in-out infinite;
    overflow: hidden;
}
.qm-boot-mark {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
}
.qm-boot-text {
    font-size: 18px;
    color: var(--color-text-2);
    letter-spacing: 1px;
}
.qm-boot-spinner {
    width: 32px; height: 32px;
    border: 2px solid var(--color-primary-soft);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: qm-spin 0.9s linear infinite;
}
@keyframes qm-pulse {
    0%,100% { transform: scale(1); }
    50% { transform: scale(1.06); }
}
@keyframes qm-spin { to { transform: rotate(360deg); } }

/* ============== 主应用容器 ============== */
.qm-app {
    display: grid;
    grid-template-columns: var(--rail-width) var(--sidebar-width) 1fr;
    height: 100vh;
    height: 100dvh;
    background: var(--color-bg);
}

/* ============== 左侧导航栏 ============== */
.qm-rail {
    background: var(--color-bg-card);
    border-right: 1px solid var(--color-border);
    display: flex; flex-direction: column;
    align-items: center;
    padding: 16px 0;
    gap: 8px;
}
.qm-rail-avatar {
    width: 44px; height: 44px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--color-primary-soft);
    box-shadow: 0 0 0 2px var(--color-primary) inset;
    margin-bottom: 12px;
}
.qm-rail-avatar img { width: 100%; height: 100%; object-fit: cover; }
.qm-rail-icons {
    display: flex; flex-direction: column;
    gap: 6px;
    flex: 1;
}
.qm-rail-btn {
    position: relative;
    width: 44px; height: 44px;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    color: var(--color-text-2);
    font-size: 22px;
    transition: background .15s, color .15s;
}
.qm-rail-btn:hover { background: var(--color-bg-hover); color: var(--color-text-1); }
.qm-rail-btn.active {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(255,102,51,0.4);
}
.qm-rail-badge {
    position: absolute;
    top: 4px; right: 4px;
    min-width: 18px; height: 18px;
    padding: 0 5px;
    border-radius: var(--radius-pill);
    background: var(--color-danger);
    color: #fff;
    font-size: 11px;
    line-height: 18px;
    text-align: center;
    font-weight: 600;
    box-shadow: 0 0 0 2px var(--color-bg-card);
}
.qm-rail-footer { margin-top: auto; }

/* ============== 会话列表 ============== */
.qm-sidebar {
    background: var(--color-bg-card);
    border-right: 1px solid var(--color-border);
    display: flex; flex-direction: column;
    overflow: hidden;
}
.qm-sidebar-head {
    padding: 16px;
    display: flex; gap: 10px;
    border-bottom: 1px solid var(--color-border);
    padding-top: calc(16px + var(--safe-top));
}
.qm-sidebar-search {
    flex: 1;
    height: 38px;
    padding: 0 14px;
    background: var(--color-bg-hover);
    border: 1px solid transparent;
    border-radius: var(--radius-pill);
    font-size: 14px;
    outline: none;
    transition: border .15s, background .15s;
}
.qm-sidebar-search:focus {
    background: var(--color-bg-card);
    border-color: var(--color-primary);
}
.qm-sidebar-action {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(255,102,51,0.32);
}
.qm-sidebar-action:hover { background: var(--color-primary-dark); }
.qm-sidebar-list { flex: 1; overflow-y: auto; padding: 6px; }

.qm-session {
    display: flex; gap: 12px;
    padding: 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background .12s;
    align-items: center;
    position: relative;
}
.qm-session:hover { background: var(--color-bg-hover); }
.qm-session.active { background: var(--color-primary-soft); }
.qm-session-avatar {
    width: 48px; height: 48px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-bg-hover);
}
.qm-session-avatar img { width: 100%; height: 100%; object-fit: cover; }
.qm-session-main { flex: 1; min-width: 0; }
.qm-session-row1 {
    display: flex; justify-content: space-between; align-items: center;
    gap: 8px;
}
.qm-session-name {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-1);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}
.qm-session-time {
    font-size: 12px;
    color: var(--color-text-3);
    flex-shrink: 0;
    font-family: var(--font-num);
}
.qm-session-row2 {
    display: flex; justify-content: space-between; align-items: center;
    margin-top: 4px;
    gap: 8px;
}
.qm-session-snippet {
    font-size: 13px;
    color: var(--color-text-3);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}
.qm-session-unread {
    min-width: 18px; height: 18px;
    padding: 0 6px;
    background: var(--color-danger);
    color: #fff;
    border-radius: var(--radius-pill);
    font-size: 11px;
    font-weight: 600;
    line-height: 18px;
    text-align: center;
    flex-shrink: 0;
}

/* ============== 主聊天区 ============== */
.qm-main {
    background: var(--color-bg);
    display: flex; flex-direction: column;
    overflow: hidden;
    position: relative;
}

.qm-empty {
    flex: 1;
    display: flex; align-items: center; justify-content: center;
    color: var(--color-text-3);
}
.qm-empty-inner { text-align: center; }
.qm-empty-inner i {
    font-size: 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 18px;
    display: inline-block;
}
.qm-empty-inner h2 {
    margin: 0 0 8px;
    font-size: 22px;
    color: var(--color-text-1);
    font-weight: 600;
}
.qm-empty-inner p { margin: 0; font-size: 14px; }

.qm-chatroom { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

/* 会话头部 */
.qm-room-head {
    height: 64px;
    padding: 0 16px;
    padding-top: var(--safe-top);
    display: flex; align-items: center;
    gap: 12px;
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
}
.qm-back-btn { display: none; font-size: 22px; color: var(--color-text-2); }
.qm-room-avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--color-bg-hover);
}
.qm-room-info { flex: 1; min-width: 0; }
.qm-room-title {
    font-size: 16px; font-weight: 600;
    color: var(--color-text-1);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.qm-room-sub {
    font-size: 12px; color: var(--color-text-3); margin-top: 2px;
}
.qm-room-action { font-size: 20px; color: var(--color-text-2); padding: 6px; }

/* 消息流 */
.qm-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex; flex-direction: column;
    gap: 6px;
    scroll-behavior: smooth;
    /* 切换会话时配合 JS opacity 0 隐藏旧消息，平滑过渡避免闪烁 */
    transition: opacity .15s ease;
}
.qm-load-more { text-align: center; padding: 8px 0 16px; }
.qm-load-more button {
    padding: 6px 18px;
    border-radius: var(--radius-pill);
    background: var(--color-bg-card);
    color: var(--color-text-2);
    font-size: 13px;
    box-shadow: var(--shadow-sm);
}
.qm-load-more button:hover { color: var(--color-primary); }

.qm-day-divider {
    display: flex; align-items: center; justify-content: center;
    color: var(--color-text-3);
    font-size: 12px;
    margin: 16px 0 8px;
    gap: 8px;
}
.qm-day-divider::before, .qm-day-divider::after {
    content: ''; flex: 1; height: 1px; background: var(--color-border);
    max-width: 80px;
}

.qm-msg {
    display: flex; gap: 8px;
    margin: 4px 0;
    max-width: 100%;
    /* 关键修复：默认不加动画
       renderMessages 用 innerHTML 整体重绘，每条消息都是新挂载的 DOM，
       若默认带 animation，发/收消息时整列消息会重新淡入，视觉上"闪一下"
       改为只对带 .qm-msg-new 的真正新增的消息加动画 */
}
/* 仅对真正新增的最后一条消息加淡入动画 */
.qm-msg.qm-msg-new {
    animation: qm-fade-up .25s ease;
}
@keyframes qm-fade-up {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}
.qm-msg-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-bg-hover);
}
.qm-msg-avatar img { width: 100%; height: 100%; object-fit: cover; }
.qm-msg-body { max-width: 70%; display: flex; flex-direction: column; gap: 4px; }
.qm-msg-name {
    font-size: 12px;
    color: var(--color-text-3);
    padding: 0 4px;
}
.qm-msg-bubble {
    padding: 10px 14px;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    color: var(--color-text-1);
    font-size: 14px;
    line-height: 1.55;
    word-break: break-word;
    position: relative;
    transition: transform .15s;
    /* 关键修复：保留换行符，否则默认 white-space: normal 会把 \n 折叠成空格 */
    white-space: pre-wrap;
    /* 关键修复：让气泡按内容宽度，不被 .qm-msg-name 撑开
       （对方消息有昵称栏，默认 stretch 会导致气泡宽度 >= 昵称宽度） */
    align-self: flex-start;
    max-width: 100%;
}
.qm-msg-bubble img.msg-img {
    border-radius: var(--radius-md);
    max-width: 240px;
    max-height: 320px;
    cursor: zoom-in;
    /* 关键修复：图片加载完成前保持透明，加载完毕后通过 .loaded 类淡入显示
       避免图片"一点一点加载出现" */
    opacity: 0;
    transition: opacity .2s ease;
}
.qm-msg-bubble img.msg-img.loaded {
    opacity: 1;
}
/* 图片占位容器：依据服务端下发的 width/height 等比缩放预设尺寸
   避免图片加载期间容器高度为 0 导致布局抖动 */
.qm-img-wrap {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--color-bg-hover);
    max-width: 240px;
    max-height: 320px;
    min-width: 80px;   /* 防止 extra 缺失时容器塌陷 */
    min-height: 80px;
}
/* 占位骨架 + 加载图标 */
.qm-img-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-3);
    font-size: 22px;
    background: linear-gradient(110deg, var(--color-bg-hover) 0%, var(--color-border) 50%, var(--color-bg-hover) 100%);
    background-size: 200% 100%;
    animation: qm-img-shimmer 1.5s linear infinite;
}
@keyframes qm-img-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
.qm-img-placeholder i {
    animation: qm-spin 1s linear infinite;
}
.qm-msg.me .qm-img-wrap {
    /* 自己发的图片气泡已有渐变背景，占位改为半透明黑 */
    background: rgba(0,0,0,0.08);
}
.qm-msg.me .qm-img-placeholder {
    color: rgba(255,255,255,0.8);
    background: linear-gradient(110deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.2) 50%, rgba(255,255,255,0.08) 100%);
    background-size: 200% 100%;
}
.qm-msg.me { flex-direction: row-reverse; }
.qm-msg.me .qm-msg-body { align-items: flex-end; }
.qm-msg.me .qm-msg-name { display: none; }
.qm-msg.me .qm-msg-bubble {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: #fff;
    border-top-right-radius: 4px;
}
.qm-msg.other .qm-msg-bubble { border-top-left-radius: 4px; }

/* 已读/未读标签：私聊场景下显示在我发的消息气泡下 */
.qm-msg-read {
    font-size: 11px;
    line-height: 1;
    padding: 2px 4px 0;
    text-align: right;
    align-self: flex-end;
}
.qm-msg-read.is-read   { color: var(--color-text-3); }
.qm-msg-read.is-unread { color: var(--color-primary); }
.qm-msg-bubble.system {
    background: transparent;
    box-shadow: none;
    color: var(--color-text-3);
    font-size: 12px;
    text-align: center;
    margin: 0 auto;
}
.qm-msg-bubble.revoked {
    color: var(--color-text-3);
    font-style: italic;
    font-size: 13px;
    background: transparent;
    box-shadow: none;
}
/* 撤回提示：整行居中显示，不带气泡框 */
.qm-msg-revoke {
    text-align: center;
    color: var(--color-text-3);
    font-size: 12px;
    line-height: 20px;
    margin: 4px 16px;
    user-select: none;
}

/* 输入栏 */
.qm-input-bar {
    padding: 12px 16px;
    padding-bottom: calc(12px + var(--safe-bottom));
    background: var(--color-bg-card);
    border-top: 1px solid var(--color-border);
    display: flex; align-items: flex-end; gap: 10px;
}
.qm-input-btn {
    width: 36px; height: 36px;
    border-radius: 50%;
    color: var(--color-text-2);
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    transition: background .15s, color .15s;
    flex-shrink: 0;
}
.qm-input-btn:hover { background: var(--color-bg-hover); color: var(--color-primary); }
.qm-input-area {
    flex: 1;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 8px 14px;
    font-size: 14px;
    line-height: 1.5;
    max-height: 120px;
    min-height: 38px;
    resize: none;
    outline: none;
    background: var(--color-bg);
    transition: border .15s;
}
.qm-input-area:focus { border-color: var(--color-primary); }
.qm-send-btn {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(255,102,51,0.32);
    transition: transform .12s;
}
.qm-send-btn:active { transform: scale(0.92); }
.qm-send-btn:disabled { background: var(--color-text-3); box-shadow: none; }

/* ============== 登录引导 ============== */
.qm-auth {
    position: fixed; inset: 0;
    display: flex; align-items: center; justify-content: center;
    background: radial-gradient(120% 100% at 50% 0%, #FFEDE3 0%, var(--color-bg) 60%);
    z-index: 50;
}
.qm-auth-card {
    background: var(--color-bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
    max-width: 360px;
    width: 90%;
}
.qm-auth-logo {
    width: 72px; height: 72px;
    margin: 0 auto 18px;
    border-radius: 20px;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.qm-auth-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.qm-auth-card h2 { margin: 0 0 10px; font-size: 22px; font-weight: 600; }
.qm-auth-card p { margin: 0 0 24px; color: var(--color-text-2); font-size: 14px; }
.qm-auth-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 32px;
    background: var(--color-primary);
    color: #fff !important;
    border-radius: var(--radius-pill);
    font-weight: 500;
    font-size: 15px;
    box-shadow: 0 6px 16px rgba(255,102,51,0.32);
    transition: transform .12s, background .15s;
}
.qm-auth-btn:hover { background: var(--color-primary-dark); transform: translateY(-1px); }
.qm-auth-tip { margin: 16px 0 0; font-size: 12px; color: var(--color-text-3); }

/* ============== 图片预览 ============== */
.qm-image-preview {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.92);
    display: flex; align-items: center; justify-content: center;
    z-index: 200;
    padding: 32px;
}
.qm-image-preview img { max-width: 100%; max-height: 100%; object-fit: contain; }
.qm-image-close {
    position: absolute; top: 18px; right: 18px;
    width: 44px; height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    cursor: pointer;
}

/* ============== 模态框 ============== */
.qm-modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.45);
    display: flex; align-items: center; justify-content: center;
    z-index: 500;
    animation: qm-modal-fade .2s ease;
}
@keyframes qm-modal-fade {
    from { opacity: 0; }
    to   { opacity: 1; }
}
.qm-modal {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 400px;
    overflow: hidden;
    animation: qm-modal-in .2s ease;
}
@keyframes qm-modal-in {
    from { opacity: 0; transform: translateY(20px) scale(0.95); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
.qm-modal-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px;
    font-size: 16px; font-weight: 600;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}
.qm-modal-close {
    background: none; border: none;
    color: var(--color-muted);
    font-size: 16px; cursor: pointer;
    padding: 4px;
}
.qm-modal-close:hover { color: var(--color-text); }
.qm-modal-body {
    padding: 20px;
}
.qm-modal-label {
    display: block;
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: 8px;
}
.qm-modal-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 15px;
    color: var(--color-text);
    background: var(--color-bg);
    outline: none;
    transition: border-color .2s;
    box-sizing: border-box;
}
.qm-modal-input:focus {
    border-color: var(--color-primary);
}
.qm-modal-foot {
    display: flex; justify-content: flex-end; gap: 10px;
    padding: 12px 20px;
    border-top: 1px solid var(--color-border);
}
.qm-modal-btn {
    padding: 8px 20px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    cursor: pointer;
    transition: background .15s;
}
.qm-modal-btn-cancel {
    background: var(--color-bg);
    color: var(--color-muted);
}
.qm-modal-btn-cancel:hover {
    background: var(--color-border);
}
.qm-modal-btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.qm-modal-btn-primary:hover {
    background: var(--color-primary-dark);
}

/* ============== 右键/长按菜单 ============== */
.qm-ctx-menu {
    position: fixed;
    z-index: 400;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 140px;
    padding: 4px 0;
    animation: qm-ctx-in .15s ease;
}
@keyframes qm-ctx-in {
    from { opacity: 0; transform: scale(0.95); }
    to   { opacity: 1; transform: scale(1); }
}
.qm-ctx-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 14px;
    color: var(--color-text);
    cursor: pointer;
    transition: background .15s;
}
.qm-ctx-item:hover {
    background: var(--color-primary-soft);
    color: var(--color-primary);
}
.qm-ctx-item .fa {
    width: 16px;
    text-align: center;
    font-size: 13px;
}
/* 危险操作项（删除聊天记录等）—— 红色文字提醒 */
.qm-ctx-item.qm-ctx-danger {
    color: #e53935;
}
.qm-ctx-item.qm-ctx-danger:hover {
    background: #ffebee;
    color: #c62828;
}

/* ============== Toast ============== */
.qm-toast {
    position: fixed; left: 50%; bottom: 60px;
    transform: translateX(-50%);
    background: rgba(15,23,42,0.88);
    color: #fff;
    padding: 10px 22px;
    border-radius: var(--radius-pill);
    font-size: 14px;
    z-index: 300;
    box-shadow: var(--shadow-md);
    animation: qm-toast-in .2s ease;
}
@keyframes qm-toast-in {
    from { opacity: 0; transform: translateX(-50%) translateY(10px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ============== 响应式：平板 (768-1023) ============== */
@media (max-width: 1023px) {
    .qm-app { grid-template-columns: var(--rail-width) var(--sidebar-width) 1fr; }
    .qm-detail { display: none; }
}

/* ============== 响应式：手机 (<768) ============== */
@media (max-width: 767px) {
    :root { --sidebar-width: 100%; }
    .qm-app {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr;
    }
    .qm-rail { display: none; }
    .qm-sidebar { display: flex; }
    .qm-main { position: absolute; inset: 0; z-index: 5; transform: translateX(100%); transition: transform .25s; }
    .qm-main.show { transform: translateX(0); }
    .qm-back-btn { display: flex; }
    .qm-msg-body { max-width: 82%; }
    .qm-room-head { padding-left: 8px; }
    .qm-session-avatar { width: 44px; height: 44px; }
}

/* ============== 嵌入模式（iframe） ============== */
.qm-chat-body.qm-embed .qm-app {
    grid-template-columns: var(--rail-width) var(--sidebar-width) 1fr;
}
.qm-chat-body.qm-embed .qm-rail { width: 60px; }
@media (max-width: 520px) {
    .qm-chat-body.qm-embed .qm-app,
    .qm-chat-body.qm-embed .qm-main {
        grid-template-columns: 1fr;
    }
    .qm-chat-body.qm-embed .qm-rail { display: none; }
}

/* ============== 嵌入单会话模式（embed + peer_id） ==============
   适用场景：uc 站订单页 iframe 嵌入，只显示双方私聊，无导航/无列表
   - 隐藏左侧导航栏（.qm-rail）
   - 隐藏会话列表（.qm-sidebar）
   - 主聊天区占满全宽，永远显示（不走移动端 transform 滑入）
   - 隐藏移动端返回按钮（无列表可返回）
*/
.qm-chat-body.qm-embed-only .qm-app {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}
.qm-chat-body.qm-embed-only .qm-rail,
.qm-chat-body.qm-embed-only .qm-sidebar,
.qm-chat-body.qm-embed-only .qm-detail {
    display: none !important;
}
/* embed 单会话模式下，主聊天区永远显示，不受移动端 transform 滑入控制 */
.qm-chat-body.qm-embed-only .qm-main {
    position: static;
    transform: none !important;
    inset: auto;
}
.qm-chat-body.qm-embed-only .qm-back-btn {
    display: none;
}
/* embed 单会话模式下，隐藏右上角"更多"按钮（订单聊天不需要会话菜单） */
.qm-chat-body.qm-embed-only .qm-room-action {
    display: none;
}
/* embed 单会话模式永远展示聊天室，隐藏空状态 */
.qm-chat-body.qm-embed-only #qm-empty {
    display: none !important;
}

/* ============== 商品卡片消息样式 ==============
   适用场景：用户在 uc 商品页点击右下角"联系卖家" → 进入 chat embed 模式
   点击输入栏左侧购物袋按钮 → 把当前商品作为卡片消息发给卖家
   对方收到后点击卡片 → 新标签打开 uc 商品详情页

   设计参考：淘宝商品卡片（主图 + 标题 + 价格 + 已售）
*/
.qm-product-card {
    display: flex;
    width: 260px;
    max-width: 100%;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: box-shadow .15s, border-color .15s;
    /* 防止内容过长导致卡片高度异常 */
    box-sizing: border-box;
}
.qm-product-card:hover {
    border-color: #FF6633;
    box-shadow: 0 2px 10px rgba(255, 102, 51, 0.15);
}
.qm-product-img {
    width: 88px;
    height: 88px;
    flex-shrink: 0;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: #ccc;
    font-size: 28px;
}
.qm-product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* 淡入效果，避免图片加载时布局抖动 */
    opacity: 0;
    transition: opacity .2s;
}
.qm-product-img img[loading="lazy"]:not([src=""]) {
    /* 已有 src 的延迟加载图，触发 load 后才显示 */
}
.qm-product-img img.loaded,
.qm-product-img img[src=""] {
    opacity: 1;
}
/* 图片加载完成后立即显示（兜底，由 JS 加 .loaded 类触发） */
.qm-product-img img[src]:not([src=""]) {
    opacity: 1;
}
.qm-product-info {
    flex: 1;
    padding: 8px 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-width: 0;  /* 关键：允许 flex 项内容收缩 */
}
.qm-product-title {
    font-size: 13px;
    color: #333;
    line-height: 1.4;
    /* 2 行省略号，超长标题不撑破卡片 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-all;
}
.qm-product-meta {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 6px;
    margin-top: 4px;
}
.qm-product-price {
    color: #FF4D00;
    font-size: 15px;
    font-weight: 600;
    /* 防止 ¥ 符号换行 */
    white-space: nowrap;
}
.qm-product-sold {
    color: #999;
    font-size: 11px;
    flex-shrink: 0;
}

/* 商品卡片发送提示条（消息区上方）
 * 仅 embed + product_type + product_id 场景下显示
 * 用户点击"发送"按钮把当前商品卡片发给对方 */
.qm-product-tip {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: linear-gradient(90deg, #FFF7F2 0%, #FFFEF8 100%);
    border-bottom: 1px solid #FFE0D0;
    color: var(--color-text-1);
    flex-shrink: 0;
}
.qm-product-tip-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(255,102,51,0.3);
}
.qm-product-tip-body {
    flex: 1;
    min-width: 0;
}
.qm-product-tip-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-1);
    line-height: 1.3;
}
.qm-product-tip-desc {
    font-size: 12px;
    color: var(--color-text-3);
    line-height: 1.3;
    margin-top: 2px;
}
.qm-product-tip-btn {
    height: 32px;
    padding: 0 16px;
    border-radius: var(--radius-pill);
    background: var(--color-primary);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    flex-shrink: 0;
    transition: background .15s, transform .1s;
    box-shadow: 0 2px 6px rgba(255,102,51,0.3);
}
.qm-product-tip-btn:hover {
    background: var(--color-primary-dark);
}
.qm-product-tip-btn:active {
    transform: scale(0.96);
}
.qm-product-tip-close {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    color: var(--color-text-3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
    transition: background .15s, color .15s;
}
.qm-product-tip-close:hover {
    background: rgba(0,0,0,0.06);
    color: var(--color-text-1);
}
@media (prefers-color-scheme: dark) {
    .qm-product-tip {
        background: linear-gradient(90deg, rgba(255,102,51,0.10) 0%, rgba(255,255,255,0.02) 100%);
        border-bottom-color: rgba(255,102,51,0.2);
    }
}