/* ── Secondhander – install prompt ─────────────────────────────────────────── */
.ub-install {
    position: fixed; left: 12px; right: 12px; bottom: calc(76px + env(safe-area-inset-bottom, 0px)); z-index: 9000;
    display: flex; align-items: center; gap: 12px; max-width: 460px; margin: 0 auto;
    padding: 10px 12px; border-radius: 16px; background: #fff; color: #2b1010;
    box-shadow: 0 10px 30px rgba(0,0,0,.22); border: 1px solid #f1e0e0;
    transform: translateY(140%); transition: transform .35s cubic-bezier(.2,.9,.3,1.1);
}
.ub-install.in { transform: translateY(0); }
.ub-install-icon { border-radius: 10px; flex: none; }
.ub-install-text { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
.ub-install-text b { font-size: .92rem; }
.ub-install-text span { font-size: .78rem; color: #6b4a4a; }
.ub-ios-share { display: inline-block; font-weight: 700; }
.ub-install-go {
    flex: none; border: 0; border-radius: 10px; padding: 9px 14px; background: #800000; color: #fff;
    font-weight: 700; font-size: .85rem;
}
.ub-install-x { flex: none; border: 0; background: transparent; color: #666; font-size: 1.4rem; line-height: 1; padding: 4px 6px; }
@media (prefers-reduced-motion: reduce) { .ub-install { transition: none; } }

.ub-install.nudge { animation: ub-nudge .7s ease 2; }
@keyframes ub-nudge { 0%,100% { transform: translateY(0); } 30% { transform: translateY(-9px); } 60% { transform: translateY(0); } 80% { transform: translateY(-4px); } }
@media (prefers-reduced-motion: reduce) { .ub-install.nudge { animation: none; } }