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button:disabled{opacity:.6;cursor:default}.fab-whatsapp{z-index:30;width:56px;height:56px;box-shadow:var(--shadow-lg);color:#fff;background:#25d366;border-radius:50%;justify-content:center;align-items:center;text-decoration:none;transition:transform .15s;display:flex;position:fixed;bottom:20px;right:20px}.fab-whatsapp:hover{transform:scale(1.06)}.fab-whatsapp svg{width:28px;height:28px}