/* 手机端整体外观 */
html, body{
    margin:0;
    height:100%;
    overflow:hidden; /* ✅ 关键 */
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial;
    background:#e9ebee;
}

.chat-wrapper{
    display:flex;
    flex-direction:column;
    height:100dvh;
    max-width:600px;
    margin:0 auto;
    background:#f7f7f7;
}

/* 顶部栏 */
.chat-header{
    padding:12px 0;
    text-align:center;
    background:#035f47;
    color:#fff;
    font-size:17px;
    font-weight:bold;
}

/* 聊天内容区 */
.chat-list{
    flex:1;
    overflow-y:auto;
    padding:12px 10px;
    overscroll-behavior:contain;
}

/* 消息行 */
.bubble-row{
    display:flex;
    margin-bottom:14px;
    align-items:flex-end;
}

/* admin 左 */
.bubble-row-admin{
    justify-content:flex-start;
}

/* user 右 */
.bubble-row-user{
    justify-content:flex-end;
}

/* 头像（admin 显示） */
.avatar{
    width:32px;
    height:32px;
    border-radius:50%;
    margin-right:8px;
}
.avatar-hidden{
    width:0;
    height:0;
    margin:0;
    padding:0;
}

/* 气泡基础样式 */
.bubble{
    max-width:70%;
    padding:10px 12px;
    border-radius:12px;
    font-size:14px;
    line-height:20px;
    word-break:break-word;
    white-space:pre-wrap;
}

/* admin 白色气泡 */
.bubble-admin{
    background:#ffffff;
    border:1px solid #e0e0e0;
    border-bottom-left-radius:4px;
    color:#333;
}

/* user 绿色气泡 */
.bubble-user{
    background:#16a085;
    color:white;
    border-bottom-right-radius:4px;
}

/* 图片消息（不带气泡背景） */
.chat-img{
    max-width:170px;
    border-radius:10px;
    cursor:pointer;
    display:block;
}

/* 图片不受 bubble 背景限制 */
.bubble-admin img,
.bubble-user img{
    background:transparent !important;
    border:none !important;
    padding:0 !important;
}

/* 时间全部隐藏 */
.bubble-time{
    display:none;
}

/* 输入区 */
.chat-input-bar{
    display:flex;
    align-items:center;
    padding:10px;
    background:#fff;
    border-top:1px solid #ddd;
}

/* 图片按钮 */
.img-btn{
    font-size:22px;
    cursor:pointer;
    margin-right:8px;
}

/* 输入框 */
.chat-input-bar input[type=text]{
    flex:1;
    padding:10px;
    font-size:16px;
    border-radius:25px;
    border:1px solid #ccc;
    outline:none;
}

/* 发送按钮（绿色圆形按钮） */
.send-btn{
    width:38px;
    height:38px;
    border-radius:50%;
    background:#035f47;
    color:#fff;
    font-size:20px;
    border:none;
    margin-left:6px;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
}
/* 图片全屏放大弹层 */
.img-modal{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,0.85);
    display:none;
    align-items:center;
    justify-content:center;
    z-index:9999;
}

.img-modal-inner{
    max-width:100%;
    max-height:100%;
    display:flex;
    align-items:center;
    justify-content:center;
}

#img-modal-src{
    max-width:100%;
    max-height:100%;
    object-fit:contain;
}
.chat-header{
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 返回按钮 */
.back-btn{
    position: absolute;
    left: 12px;
    color: #fff;
    font-size: 15px;
    cursor: pointer;
    user-select: none;
}

.back-btn:active{
    opacity: .7;
}