.atl-btn{justify-content:center;align-items:center;gap:var(--space-2);min-height:var(--button-height-md);padding:0 var(--space-4);border-radius:var(--radius-sm);font-weight:600;font-size:var(--fs-body);letter-spacing:.01em;transition:background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);white-space:nowrap;border:1px solid #0000;display:inline-flex}.atl-btn:focus-visible{box-shadow:var(--focus-ring);outline:none}.atl-btn:active:not(:disabled){transform-origin:50%;transform:scale(.98)}.atl-btn:disabled{opacity:.45;cursor:not-allowed}.atl-btn--sm{min-height:var(--button-height-sm);padding:0 var(--space-3);font-size:var(--fs-meta)}.atl-btn--primary{background:var(--signature);color:var(--text-on-signature)}.atl-btn--primary:hover:not(:disabled){background:var(--signature-hover)}.atl-btn--secondary{background:var(--surface-3);border-color:var(--surface-border);color:var(--text-primary)}.atl-btn--secondary:hover:not(:disabled){border-color:var(--accent-border);color:var(--text-primary)}.atl-btn--ghost{color:var(--text-secondary);background:0 0}.atl-btn--ghost:hover:not(:disabled){color:var(--text-primary);background:var(--surface-2)}.atl-btn--danger{background:var(--status-danger);color:var(--surface-0)}.atl-btn--danger:hover:not(:disabled){background:var(--status-danger-strong)}.atl-btn__spinner{flex-shrink:0;animation:.8s linear infinite atl-btn-spin}@keyframes atl-btn-spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.atl-btn__spinner{animation:none}.atl-btn:active:not(:disabled){transform:none}}