.zalo-support-button{position:fixed;bottom:24px;right:24px;z-index:1300;display:flex;flex-direction:column;align-items:center;gap:12px}.zalo-support-button .MuiFab-root{width:60px;height:60px;background-color:#0068ff;color:#fff;box-shadow:0 8px 16px rgba(0,0,0,.24);transition:all .3s cubic-bezier(.4,0,.2,1)}.zalo-support-button .MuiFab-root:hover{background-color:#0052cc;transform:scale(1.05);box-shadow:0 12px 24px rgba(0,0,0,.32)}.zalo-support-button .MuiFab-root:active{transform:scale(.95)}.zalo-support-button .MuiFab-root[aria-label*=YouTube]{width:60px;height:60px;background-color:#FF0000}.zalo-support-button .MuiFab-root[aria-label*=YouTube]:hover{background-color:#CC0000}.zalo-support-button img{width:28px;height:28px;object-fit:contain;filter:brightness(1.1)}@media (max-width:768px){.zalo-support-button{bottom:20px;right:20px;gap:10px}.zalo-support-button .MuiFab-root,.zalo-support-button .MuiFab-root[aria-label*=YouTube]{width:56px;height:56px}.zalo-support-button img,.zalo-support-button svg{width:24px;height:24px}}.zalo-support-button .MuiFab-root:focus-visible{outline:2px solid #0068ff;outline-offset:2px}.zalo-support-button .MuiFab-root[aria-label*=YouTube]:focus-visible{outline:2px solid #FF0000;outline-offset:2px}.zalo-support-label{background-color:rgba(0,0,0,.8);color:#fff;padding:4px 8px;border-radius:4px;font-size:.75rem;font-weight:500;white-space:nowrap;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 4px 8px rgba(0,0,0,.16);transform-origin:center bottom}@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(0,104,255,.7)}70%{box-shadow:0 0 0 10px rgba(0,104,255,0)}to{box-shadow:0 0 0 0 rgba(0,104,255,0)}}.zalo-support-button .MuiFab-root.pulse{animation:pulse 2s infinite}