.container { max-width: 1200px; margin: 0 auto; padding: var(--space-6) var(--space-4); }
.container-sm { max-width: 480px; margin: 0 auto; padding: var(--space-6) var(--space-4); }
.auth-shell { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: var(--space-4); background: linear-gradient(135deg, var(--bg) 0%, var(--bg-muted) 100%); }
.auth-card { width: 100%; max-width: 420px; }