/* ===== 泓萌量子 · AI 客服智能助手 ===== */
/* 浮动入口按钮 + 聊天窗口，原生 CSS，无依赖 */

/* ---------- 浮动入口按钮 ---------- */
#qad-ai-toggle{
    position:fixed;
    right:24px;
    bottom:96px;
    width:60px;height:60px;
    border-radius:50%;
    background:linear-gradient(135deg,#0AADFF 0%,#07A3F5 100%);
    box-shadow:0 8px 24px rgba(7,170,255,.35);
    cursor:pointer;
    z-index:9999;
    display:flex;align-items:center;justify-content:center;
    color:#fff;
    transition:transform .25s ease,box-shadow .25s ease;
    border:none;
    outline:none;
    -webkit-tap-highlight-color:transparent;
    user-select:none;
}
#qad-ai-toggle:hover{transform:translateY(-2px) scale(1.04);box-shadow:0 12px 28px rgba(7,170,255,.45)}
#qad-ai-toggle:active{transform:scale(.96)}
#qad-ai-toggle svg{width:28px;height:28px;fill:currentColor}
/* 呼吸光晕 */
#qad-ai-toggle::before{
    content:"";position:absolute;inset:-6px;border-radius:50%;
    border:2px solid rgba(10,173,255,.45);
    animation:qad-ai-pulse 2.4s ease-out infinite;
    pointer-events:none;
}
@keyframes qad-ai-pulse{
    0%{transform:scale(1);opacity:.75}
    100%{transform:scale(1.55);opacity:0}
}
/* 未读提示红点 */
#qad-ai-badge{
    position:absolute;top:-2px;right:-2px;
    min-width:18px;height:18px;padding:0 5px;
    background:#FF4D4F;color:#fff;font-size:11px;line-height:18px;
    border-radius:9px;text-align:center;
    border:2px solid #fff;display:none;
}

/* ---------- 聊天窗口 ---------- */
#qad-ai-chat{
    position:fixed;
    right:24px;
    bottom:170px;
    width:360px;max-width:calc(100vw - 32px);
    height:560px;max-height:calc(100vh - 200px);
    background:#fff;
    border-radius:16px;
    box-shadow:0 20px 60px rgba(15,23,42,.18),0 4px 12px rgba(15,23,42,.08);
    z-index:10000;
    display:none;flex-direction:column;
    overflow:hidden;
    font-family:"DM Sans","Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
    transform:translateY(20px) scale(.96);
    opacity:0;
    transition:transform .28s ease,opacity .28s ease;
}
#qad-ai-chat.qad-open{
    display:flex;
    transform:translateY(0) scale(1);
    opacity:1;
}

/* 头部 */
.qad-ai-header{
    padding:16px 18px;
    background:linear-gradient(135deg,#0AADFF 0%,#07A3F5 100%);
    color:#fff;
    display:flex;align-items:center;gap:10px;
    flex-shrink:0;
}
.qad-ai-avatar{
    width:36px;height:36px;border-radius:50%;
    background:rgba(255,255,255,.2);
    display:flex;align-items:center;justify-content:center;
    flex-shrink:0;
}
.qad-ai-avatar svg{width:20px;height:20px;fill:#fff}
.qad-ai-title{font-size:15px;font-weight:600;line-height:1.2}
.qad-ai-sub{font-size:11px;opacity:.85;margin-top:2px;display:flex;align-items:center;gap:5px}
.qad-ai-dot{width:6px;height:6px;background:#5BFF8F;border-radius:50%;display:inline-block}
.qad-ai-close{
    margin-left:auto;background:transparent;border:none;color:#fff;
    cursor:pointer;padding:4px;border-radius:6px;
    display:flex;align-items:center;justify-content:center;
}
.qad-ai-close:hover{background:rgba(255,255,255,.15)}
.qad-ai-close svg{width:18px;height:18px;fill:#fff}

/* 消息区 */
.qad-ai-body{
    flex:1;
    overflow-y:auto;
    padding:16px 14px;
    background:#F8FAFC;
    scroll-behavior:smooth;
}
.qad-ai-body::-webkit-scrollbar{width:6px}
.qad-ai-body::-webkit-scrollbar-thumb{background:#CBD5E1;border-radius:3px}
.qad-ai-body::-webkit-scrollbar-track{background:transparent}

.qad-ai-msg{
    display:flex;margin-bottom:14px;gap:8px;
    animation:qad-ai-fadeIn .3s ease;
}
@keyframes qad-ai-fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

.qad-ai-msg .qad-ai-bubble{
    max-width:78%;
    padding:10px 14px;
    border-radius:14px;
    font-size:13px;line-height:1.6;
    word-break:break-word;word-wrap:break-word;
    white-space:pre-wrap;
}
.qad-ai-msg.qad-from-ai .qad-ai-bubble{
    background:#fff;color:#1F2937;
    border:1px solid #E2E6E9;
    border-top-left-radius:4px;
}
.qad-ai-msg.qad-from-user{flex-direction:row-reverse}
.qad-ai-msg.qad-from-user .qad-ai-bubble{
    background:linear-gradient(135deg,#0AADFF 0%,#07A3F5 100%);
    color:#fff;border-top-right-radius:4px;
}
.qad-ai-msg .qad-ai-avatar-sm{
    width:28px;height:28px;border-radius:50%;flex-shrink:0;
    display:flex;align-items:center;justify-content:center;font-size:12px;
}
.qad-ai-msg.qad-from-ai .qad-ai-avatar-sm{
    background:linear-gradient(135deg,#0AADFF 0%,#07A3F5 100%);color:#fff;
}
.qad-ai-msg.qad-from-user .qad-ai-avatar-sm{
    background:#E2E6E9;color:#64748B;
}

/* 打字指示器 */
.qad-ai-typing{display:inline-flex;gap:4px;padding:4px 0}
.qad-ai-typing span{
    width:7px;height:7px;background:#94A3B8;border-radius:50%;
    animation:qad-ai-typing 1.2s infinite ease-in-out;
}
.qad-ai-typing span:nth-child(2){animation-delay:.2s}
.qad-ai-typing span:nth-child(3){animation-delay:.4s}
@keyframes qad-ai-typing{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-5px);opacity:1}}

/* 快捷问题 */
.qad-ai-quick{
    padding:10px 14px 4px;background:#F8FAFC;flex-shrink:0;
}
.qad-ai-quick-title{font-size:11px;color:#94A3B8;margin-bottom:8px}
.qad-ai-quick-list{display:flex;flex-wrap:wrap;gap:6px}
.qad-ai-quick-btn{
    padding:6px 12px;background:#fff;border:1px solid #0AADFF;
    color:#0AADFF;font-size:12px;border-radius:14px;
    cursor:pointer;transition:all .2s;
}
.qad-ai-quick-btn:hover{background:#0AADFF;color:#fff}

/* 输入区 */
.qad-ai-footer{
    padding:10px 12px;
    background:#fff;border-top:1px solid #E2E6E9;
    flex-shrink:0;display:flex;gap:8px;align-items:center;
}
.qad-ai-input{
    flex:1;
    padding:10px 14px;
    border:1px solid #E2E6E9;border-radius:20px;
    font-size:13px;outline:none;
    background:#F8FAFC;color:#1F2937;
    font-family:inherit;
    transition:border-color .2s;
    resize:none;max-height:80px;
}
.qad-ai-input:focus{border-color:#0AADFF;background:#fff}
.qad-ai-send{
    width:36px;height:36px;border-radius:50%;
    background:linear-gradient(135deg,#0AADFF 0%,#07A3F5 100%);
    border:none;color:#fff;cursor:pointer;flex-shrink:0;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 4px 10px rgba(7,170,255,.3);
    transition:transform .2s;
}
.qad-ai-send:hover{transform:scale(1.06)}
.qad-ai-send:active{transform:scale(.94)}
.qad-ai-send:disabled{opacity:.5;cursor:not-allowed}
.qad-ai-send svg{width:18px;height:18px;fill:#fff}

/* ---------- 移动端适配 ---------- */
@media (max-width:768px){
    #qad-ai-toggle{right:16px;bottom:80px;width:54px;height:54px}
    #qad-ai-toggle svg{width:24px;height:24px}
    #qad-ai-chat{
        right:8px;left:8px;bottom:142px;width:auto;
        height:calc(100vh - 220px);max-height:none;
        border-radius:14px;
    }
}

/* 遮罩层（移动端） */
#qad-ai-mask{
    position:fixed;inset:0;background:rgba(15,23,42,.4);
    z-index:9998;display:none;
    -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
}
#qad-ai-mask.qad-open{display:block}