.chat-btn{bottom:20px;background-color:#0070f3;color:#fff;border:none;border-radius:50%;width:60px;height:60px;font-size:1.5rem;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,.3)}.chat-box,.chat-btn{position:fixed;right:20px;z-index:9999}.chat-box{bottom:90px;width:90%;max-width:320px;height:400px;background-color:#fff;border:2px solid #0070f3;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,.3);display:flex;flex-direction:column}.chat-header{padding:1rem;background-color:#0070f3;color:#fff;border-top-left-radius:12px;border-top-right-radius:12px;display:flex;justify-content:space-between;align-items:center}.close-chat{background:transparent;border:none;color:#fff;font-size:1.2rem;cursor:pointer}.chat-body{flex:1 1;padding:1rem;overflow-y:auto;background-color:#f9f9f9}.chat-footer{padding:1rem;border-top:1px solid #ddd;display:flex}.chat-footer input{flex:1 1;padding:.5rem;border-radius:8px;border:1px solid #ccc}.chat-footer button{margin-left:.5rem;background-color:#0070f3;color:#fff;border:none;border-radius:8px;padding:.5rem 1rem;cursor:pointer}body,html{max-width:100%;overflow-x:hidden;margin:0;padding:0;height:100%;background-color:#cbe2e8}*{box-sizing:border-box}.chat-body button{padding:.5rem 1rem;border-radius:20px;border:1px solid #0070f3;background-color:#fff;color:#0070f3;cursor:pointer;transition:background .3s ease;margin-right:.5rem;margin-bottom:.5rem}.chat-body button:hover{background-color:#0070f3;color:#fff}.chat-body{scroll-behavior:smooth}@media (max-width:480px){.chat-box{width:95%;height:80%;bottom:10px;right:10px}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.chat-body p{background-color:#e0e0e0;padding:.5rem 1rem;border-radius:20px;margin-bottom:.5rem;max-width:80%;word-wrap:break-word;animation:fadeIn .3s ease-in-out}.chat-body p:nth-child(2n){background-color:#0070f3;color:#fff;margin-left:auto;text-align:right;animation:fadeIn .3s ease-in-out}