.auth-canvas {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--efax-dark), var(--efax-header));
    padding: 1.5rem;
}
.auth-card {
    width: 100%;
    max-width: 380px;
    background: var(--efax-card);
    border-radius: 14px;
    padding: 2rem 1.75rem;
}
.auth-brand {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--efax-primary);
}
.auth-brand i { font-size: 1.7rem; }
.auth-sub {
    color: var(--efax-muted);
    font-size: .85rem;
    margin: .25rem 0 1.5rem;
}