.app-install-button { display:inline-flex; align-items:center; justify-content:center; padding:11px 18px; margin-top:18px; border:1px solid #3f3f46; border-radius:999px; background:#18181b; color:#e4e4e7; font:inherit; font-size:13px; cursor:pointer; transition:background .18s,transform .18s; }
.app-install-button:hover { background:#27272a; transform:translateY(-1px); }
.app-install-button[hidden], .ebtv-installed .app-install-button { display:none; }
.app-install-guide { box-sizing:border-box; width:calc(100% - 32px); max-width:380px; padding:32px 26px 24px; border:1px solid #3f3f46; border-radius:24px; background:#111113; color:#f4f4f5; text-align:center; box-shadow:0 24px 90px #0009; }
.app-install-guide::backdrop { background:#0009; backdrop-filter:blur(8px); }
.app-install-guide img { margin:0 auto 18px; border-radius:18px; }
.app-install-guide h2 { font-size:22px; font-weight:800; margin:0 0 12px; }
.app-install-guide p { color:#a1a1aa; font-size:15px; line-height:1.6; }
.app-install-close { position:absolute; top:8px; right:14px; background:none; border:0; color:#a1a1aa; font-size:28px; cursor:pointer; }
.app-install-done { width:100%; margin-top:20px; padding:12px; border:0; border-radius:14px; background:#dc2626; color:white; font:inherit; font-weight:700; cursor:pointer; }
#auth-form[aria-busy] button, #password-form[aria-busy] button { opacity:.6; cursor:wait; }
@media (prefers-reduced-motion:reduce) { .app-install-button { transition:none; } }