/* ---------- 共用 ---------- */
.lemon-ai-chat{display:flex;flex-direction:column;height:var(--lac-height,520px);max-height:80vh;border:1px solid rgba(0,0,0,.12);border-radius:16px;background:#fff;overflow:hidden;font-size:15px;line-height:1.7;color:#111;box-sizing:border-box}
.lemon-ai-chat *,.lemon-ai-chat *::before,.lemon-ai-chat *::after{box-sizing:border-box}
.lemon-ai-chat .lac-log{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:12px;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
.lemon-ai-chat .lac-msg{max-width:82%;padding:10px 14px;border-radius:14px;white-space:pre-wrap;word-break:break-word}
.lemon-ai-chat .lac-bot{align-self:flex-start;background:#f3f4f6;color:#111;border-bottom-left-radius:4px}
.lemon-ai-chat .lac-user{align-self:flex-end;background:#ffd100;color:#3a2a00;border-bottom-right-radius:4px}
.lemon-ai-chat .lac-msg.lac-pending{opacity:.6;font-style:italic}
.lemon-ai-chat .lac-form{display:flex;gap:8px;padding:12px;margin:0;border-top:1px solid rgba(0,0,0,.08);background:#fafafa}
.lemon-ai-chat .lac-input{flex:1;display:block;width:auto;resize:none;height:44px;min-height:0;max-height:120px;margin:0;padding:10px 12px;overflow-y:auto;border:1px solid rgba(0,0,0,.15);border-radius:10px;font:inherit;line-height:1.5;color:#111;background:#fff;box-shadow:none}
.lemon-ai-chat .lac-input:focus{outline:2px solid #ffd100;outline-offset:1px}
.lemon-ai-chat button{font:inherit;line-height:1;text-transform:none;letter-spacing:normal;box-shadow:none;min-height:0;margin:0}
.lemon-ai-chat .lac-send{flex:0 0 auto;padding:0 20px;border:0;border-radius:10px;background:#111;color:#fff;cursor:pointer}
.lemon-ai-chat .lac-send:hover{background:#333;color:#fff}
.lemon-ai-chat .lac-send:disabled{opacity:.45;cursor:not-allowed}
@media (max-width:600px){.lemon-ai-chat.lac-embed{height:min(70vh,480px)}.lemon-ai-chat .lac-msg{max-width:92%}}

/* ---------- 全站浮動 ---------- */
.lemon-ai-chat.lac-floating{position:fixed;z-index:99990;left:50%;transform:translateX(-50%);bottom:20px;width:min(600px,calc(100vw - 24px));height:auto;max-height:none;border-radius:20px;box-shadow:0 10px 30px rgba(0,0,0,.18),0 2px 6px rgba(0,0,0,.08)}
.lemon-ai-chat.lac-floating .lac-form{border-top:0;background:#fff}
.lemon-ai-chat.lac-floating .lac-panel{display:none;flex-direction:column;height:min(60vh,460px);border-bottom:1px solid rgba(0,0,0,.08)}
.lemon-ai-chat.lac-floating.lac-open .lac-panel{display:flex}
.lemon-ai-chat .lac-head{display:flex;align-items:center;gap:6px;padding:10px 10px 10px 18px;border-bottom:1px solid rgba(0,0,0,.08);background:#fafafa}
.lemon-ai-chat .lac-title{flex:1;font-weight:600}
.lemon-ai-chat .lac-reset,.lemon-ai-chat .lac-close{display:inline-flex;align-items:center;justify-content:center;height:32px;padding:0 10px;border:0;border-radius:8px;background:transparent;color:#555;cursor:pointer;font-size:13px}
.lemon-ai-chat .lac-reset:hover,.lemon-ai-chat .lac-close:hover{background:rgba(0,0,0,.06);color:#111}

/* 上方置中：聊天列在上，對話紀錄往下展開 */
.lemon-ai-chat.lac-floating.lac-pos-top{bottom:auto;top:16px;flex-direction:column-reverse}
.lemon-ai-chat.lac-floating.lac-pos-top .lac-panel{border-bottom:0;border-top:1px solid rgba(0,0,0,.08)}
body.admin-bar .lemon-ai-chat.lac-floating.lac-pos-top{top:48px}

/* 右下角 */
.lemon-ai-chat.lac-floating.lac-pos-bottom-right{left:auto;right:20px;transform:none;width:min(380px,calc(100vw - 24px))}

@media (max-width:600px){
  .lemon-ai-chat.lac-floating,.lemon-ai-chat.lac-floating.lac-pos-bottom-right{left:12px;right:12px;transform:none;width:auto;bottom:12px;border-radius:16px}
  .lemon-ai-chat.lac-floating.lac-pos-top{top:12px}
  body.admin-bar .lemon-ai-chat.lac-floating.lac-pos-top{top:58px}
  .lemon-ai-chat.lac-floating .lac-panel{height:min(55vh,420px)}
  .lemon-ai-chat.lac-floating .lac-form{padding:8px;gap:6px}
  .lemon-ai-chat.lac-floating .lac-input{height:40px;padding:8px 12px;font-size:16px;line-height:1.4} /* 16px 避免 iPhone 點輸入框時自動放大 */
  .lemon-ai-chat.lac-floating .lac-send{padding:0 14px;height:40px;align-self:flex-end}
  .lemon-ai-chat.lac-floating .lac-head{padding:6px 6px 6px 14px}
}
@media print{.lemon-ai-chat.lac-floating{display:none}}
.lemon-ai-chat.lac-floating.lac-pos-top .lac-close svg{transform:rotate(180deg)}