.btn{justify-content:center;align-items:center;gap:var(--space-2);font-family:var(--font-heading);font-weight:var(--font-weight-semibold);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);white-space:nowrap;border:none;text-decoration:none;display:inline-flex;position:relative;overflow:hidden}.btn:focus-visible{outline:2px solid var(--color-primary-200);outline-offset:2px}.btn:disabled,.btn[aria-disabled=true]{opacity:.5;cursor:not-allowed;pointer-events:none}.btn-sm{height:36px;padding:0 var(--space-4);font-size:var(--text-sm)}.btn-md{height:48px;padding:0 var(--space-6);font-size:var(--text-base)}.btn-lg{height:56px;padding:0 var(--space-8);font-size:var(--text-lg)}.btn-primary{background:linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));color:#fff;box-shadow:var(--shadow-md), var(--shadow-glow)}.btn-primary:hover{background:linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));box-shadow:var(--shadow-lg), 0 0 40px #0d8ae040;transform:translateY(-2px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{color:var(--text-primary);background:0 0;border:1px solid #ffffff26}.btn-secondary:hover{background:#ffffff0f;border-color:#ffffff40;transform:translateY(-2px)}.btn-ghost{color:var(--color-primary-200);background:0 0}.btn-ghost:hover{background:#0d8ae01a}.btn-whatsapp{background:linear-gradient(135deg, var(--color-whatsapp), #20bd5a);color:#fff;box-shadow:var(--shadow-md)}.btn-whatsapp:hover{box-shadow:var(--shadow-lg), 0 0 30px #25d3664d;transform:translateY(-2px)}.btn-cta{background:linear-gradient(135deg, var(--color-cta-500), var(--color-cta-600));color:#fff;box-shadow:var(--shadow-md), var(--shadow-glow-cta)}.btn-cta:hover{box-shadow:var(--shadow-lg), 0 0 40px #f973164d;transform:translateY(-2px)}.btn-loading{pointer-events:none}.btn-spinner{border:2px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:18px;height:18px;animation:.6s linear infinite spin}@media (max-width:767px){.btn-lg{width:100%}}