/* Shared graphite backdrop: only transform is animated, never layout or filters. */
html { min-height: 100%; background: #090a0b; }
body.smart-login-background {
    margin: 0;
    min-height: 100vh;
    min-height: 100svh;
    position: relative;
    isolation: isolate;
    background: #090a0b;
}
.smart-login-background::before {
    content: "";
    position: fixed;
    inset: -8%;
    z-index: -2;
    pointer-events: none;
    background: #090a0b url('/images/login-graphite-v1.png') center / cover no-repeat;
    transform: translate3d(-3%, -1.5%, 0) scale(1.12);
    animation: graphite-drift 24s ease-in-out infinite alternate;
    will-change: transform;
}
.smart-login-background::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background: linear-gradient(115deg, rgba(0,0,0,.12), rgba(0,0,0,.32));
}
@keyframes graphite-drift {
    from { transform: translate3d(-3%, -1.5%, 0) scale(1.12); }
    to { transform: translate3d(3%, 1.5%, 0) scale(1.2); }
}
.smart-login-background.motion-paused::before { animation-play-state: paused; }
.smart-help-login-content {
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(24px, 5vw, 80px);
    min-height: 100svh;
    padding: 30px;
}
.smart-help-login-content > div { min-width: 0; box-sizing: border-box; }
@media (max-width: 760px) {
    .smart-help-login-content { flex-direction: column; padding: 24px 16px; }
    .smart-help-login-content > div { width: 100%; }
}