.btn{border-radius:var(--radius-md);font-weight:var(--font-weight-medium);transition:all var(--transition-fast);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;display:inline-flex;box-shadow:0 1px 2px #0000000d}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--color-primary);color:var(--color-text-inverse);box-shadow:0 4px 6px -1px #2563eb33,0 2px 4px -2px #2563eb33}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-hover);transform:translateY(-1px);box-shadow:0 10px 15px -3px #2563eb4d,0 4px 6px -4px #2563eb4d}.btn-secondary{background-color:var(--color-secondary);color:var(--color-text-inverse)}.btn-outline{border-color:var(--color-border);color:var(--color-text-primary);background-color:#0000}.btn-outline:hover:not(:disabled){background-color:var(--color-surface-hover)}.btn-whatsapp{color:#fff;background-color:#25d366;box-shadow:0 4px 6px -1px #25d36633}.btn-whatsapp:hover:not(:disabled){background-color:#1ebd5a;transform:translateY(-1px);box-shadow:0 10px 15px -3px #25d3664d}.btn-sm{padding:var(--space-2) var(--space-3);font-size:var(--text-sm);min-height:44px}.btn-md{padding:var(--space-3) var(--space-4);font-size:var(--text-base);min-height:52px}.btn-lg{padding:var(--space-4) var(--space-6);font-size:var(--text-lg);min-height:56px}.btn-full{width:100%}.btn-spinner{width:1em;height:1em;margin-right:var(--space-2);border:2px solid;border-right-color:#0000;border-radius:50%;animation:.75s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}