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1fr;gap:32px}}@media(max-width:600px){.footer__grid{grid-template-columns:1fr;gap:28px}.footer__bottom{flex-direction:column;gap:12px;text-align:center}}.whatsapp-btn{position:fixed;bottom:28px;right:28px;z-index:999;width:60px;height:60px;background:#25d366;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px #25d36666;transition:var(--transition-fast);opacity:0;transform:scale(.6) translateY(20px);pointer-events:none}.whatsapp-btn--visible{opacity:1;transform:scale(1) translateY(0);pointer-events:all}.whatsapp-btn:hover{transform:scale(1.08) translateY(-2px);box-shadow:0 8px 30px #25d36680}.whatsapp-btn__pulse{position:absolute;inset:-4px;border-radius:50%;border:2px solid rgba(37,211,102,.4);animation:waPulse 2s ease-in-out infinite}@keyframes waPulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.15);opacity:0}}@media(max-width:600px){.whatsapp-btn{width:54px;height:54px;bottom:20px;right:20px}}