.login-overlay[hidden] { display: none; }
.login-overlay {
    position: fixed;
    inset: 0;
    z-index: 2147483647;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, .8);
    cursor: wait;
}
.login-progress { display: flex; flex-direction: column; align-items: center; gap: 16px; color: #205b35; font-weight: 600; }
.login-spinner { width: 48px; height: 48px; border: 5px solid #dce9df; border-top-color: #287a44; border-radius: 50%; animation: login-spin .8s linear infinite; }
@keyframes login-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .login-spinner { animation-duration: 2s; } }