.app-busy-overlay {
    position: fixed;
    inset: 0;
    z-index: 2147483647;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        radial-gradient(circle at 18% 12%, rgba(37, 99, 235, .22), transparent 30%),
        radial-gradient(circle at 82% 18%, rgba(14, 165, 233, .18), transparent 32%),
        rgba(15, 23, 42, .38);
    backdrop-filter: blur(8px) saturate(1.08);
    -webkit-backdrop-filter: blur(8px) saturate(1.08);
}

.app-busy-card {
    width: min(420px, calc(100vw - 42px));
    min-height: 210px;
    border-radius: 28px;
    display: grid;
    place-items: center;
    text-align: center;
    gap: 14px;
    padding: 34px 28px;
    background: rgba(255, 255, 255, .94);
    border: 1px solid rgba(255, 255, 255, .75);
    box-shadow: 0 32px 90px rgba(15, 23, 42, .24);
}

.app-busy-title {
    margin-top: 8px;
    font-weight: 900;
    font-size: 17px;
    color: #0f172a;
    letter-spacing: .01em;
}

.app-busy-message {
    max-width: 320px;
    font-size: 14px;
    line-height: 1.5;
    color: #64748b;
    font-weight: 650;
}