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#ff6b9d80}.register-modal-button:active{transform:translateY(0)}.register-modal-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);animation:buttonShimmer 2s infinite}@media (max-width: 480px){.chat-header{padding:12px 15px}.profile-name{font-size:16px}.message-bubble{max-width:250px;font-size:15px}.chat-input{font-size:16px}.send-button{width:36px;height:36px}.send-button svg{width:18px;height:18px}.register-button{padding:14px 28px;font-size:16px;min-width:180px}.register-modal-overlay{padding:15px}.register-modal-content{padding:30px 20px;max-width:320px;min-width:280px;width:95%}.register-modal-title{font-size:18px;margin-bottom:20px;line-height:1.4}.register-modal-button{padding:14px 28px;font-size:16px;width:100%}}@media (min-width: 768px){body.chat-interface{max-width:400px;margin:0 auto;box-shadow:0 0 30px #0003}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes 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