/* فقط کنترل‌های جدید مشاهده پیام؛ استایل‌های قبلی دست‌نخورده‌اند. */
#ft-app .ft-receipt-btn {
    display:inline-flex; align-items:center; justify-content:center; vertical-align:middle;
    width:28px; height:22px; margin:0 5px 0 0; padding:0; border:0;
    background:transparent; color:#69766e; cursor:pointer; opacity:1;
    -webkit-tap-highlight-color:transparent;
}
#ft-app .ft-own-message .ft-msg-time { opacity:1; }
#ft-app .ft-receipt-btn.ft-receipt-seen { color:#007da8; }
#ft-app .ft-receipt-btn:focus-visible { outline:2px solid currentColor; border-radius:4px; }
#ft-app .ft-receipt-overlay {
    position:fixed; inset:0; z-index:100000; background:rgba(0,0,0,.42);
    display:flex; align-items:center; justify-content:center; padding:20px;
    box-sizing:border-box; font-family:inherit;
}
#ft-app .ft-receipt-panel {
    width:100%; max-width:420px; max-height:75vh; overflow:auto;
    padding:20px; border-radius:20px; box-sizing:border-box;
    background:var(--white, #fff); color:var(--text, #17221a);
    box-shadow:0 8px 32px rgba(0,0,0,.18); font-size:14px;
}
#ft-app .ft-receipt-header { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:16px; }
#ft-app .ft-receipt-close { border:0; background:transparent; color:inherit; font-size:20px; width:36px; height:36px; cursor:pointer; }
#ft-app .ft-receipt-reader { display:flex; flex-direction:column; gap:6px; padding:12px 0; border-bottom:1px solid rgba(128,128,128,.2); }
#ft-app .ft-receipt-reader time { color:var(--muted, #646970); font-size:12px; }
#ft-app .ft-receipt-note { margin:16px 0 0; color:var(--muted, #646970); font-size:11px; line-height:1.8; }