.contact-buttons{position:fixed;right:16px;top:50%;transform:translateY(-50%);z-index:50;display:flex;flex-direction:column;gap:12px}.contact-button{display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:50%;box-shadow:0 4px 12px #00000026;transition:all .3s ease;position:relative;text-decoration:none;color:#fff}.contact-button:hover{transform:scale(1.1);box-shadow:0 6px 20px #00000040}.contact-button i{font-size:20px}.contact-button .tooltip{position:absolute;right:64px;background-color:#1f2937;color:#fff;padding:8px 12px;border-radius:8px;font-size:14px;white-space:nowrap;opacity:0;visibility:hidden;transition:all .3s ease;z-index:60}.contact-button .tooltip:after{content:"";position:absolute;top:50%;right:-6px;transform:translateY(-50%);border:6px solid transparent;border-left-color:#1f2937}.contact-button:hover .tooltip{opacity:1;visibility:visible}.contact-button.phone{background-color:#dc2626}.contact-button.phone:hover{background-color:#b91c1c}.contact-button.zalo{background-color:#2563eb}.contact-button.zalo:hover{background-color:#1d4ed8}.contact-button.facebook{background-color:#1877f2}.contact-button.facebook:hover{background-color:#166fe5}.contact-button.instagram{background-color:#e4405f}.contact-button.instagram:hover{background-color:#d62976}@media (max-width: 768px){.contact-buttons{right:12px;bottom:20px;top:auto;transform:none;flex-direction:row;justify-content:center;flex-wrap:wrap}.contact-button{width:48px;height:48px}.contact-button i{font-size:18px}.contact-button .tooltip{display:none}}@keyframes slideInRight{0%{opacity:0;transform:translate(100px)}to{opacity:1;transform:translate(0)}}.contact-button{animation:slideInRight .5s ease-out}.contact-button:nth-child(1){animation-delay:.1s}.contact-button:nth-child(2){animation-delay:.2s}.contact-button:nth-child(3){animation-delay:.3s}.contact-button:nth-child(4){animation-delay:.4s}