body{font-family:Arial,sans-serif;background:#f5f5f5;margin:0}#chat-popup{position:fixed;bottom:20px;right:20px;width:320px;display:none;flex-direction:column;background:white;border-radius:16px;box-shadow:0 0 10px rgba(0,0,0,0.2);overflow:hidden;z-index:1000}#chat-header{color:white;padding:10px;font-weight:bold;cursor:pointer;display:flex;justify-content:space-between;align-items:center}#chevron{font-size:16px;margin-left:10px;transition:transform .3s ease}#chat-header.collapsed #chevron{transform:rotate(-180deg)}#chat-body{padding:10px;height:300px;overflow-y:auto}.message{display:flex;align-items:flex-start;margin-bottom:10px}.avatar{width:32px;height:32px;border-radius:50%;margin-right:8px}.bubble{background:#e0f7fa;padding:.5rem 1rem;border-radius:16px;max-width:70%}.user .bubble{background:#c8e6c9;margin-left:auto}#chat-input{display:flex;padding:10px}#chat-input input{flex:1;padding:8px;border:1px solid #ccc}#chat-input button{color:white;border:0;padding:8px 12px}#open-chat-btn{position:fixed;bottom:20px;right:20px;color:white;border:0;border-radius:50%;width:60px;height:60px;font-size:24px;cursor:pointer}form{background:white;padding:2rem;max-width:500px;margin:3rem auto;box-shadow:0 0 10px rgba(0,0,0,0.1);border-radius:16px}form input,form textarea{width:100%;padding:.75rem;margin:.5rem 0;border:1px solid #ccc;border-radius:8px}form button{background:#00796b;color:white;padding:.75rem 1.5rem;border:0;border-radius:8px;cursor:pointer}.center{text-align:center}.center-btn{display:flex;justify-content:center;margin-top:20px}.typing{display:flex;gap:4px;align-items:center}.typing .dot{width:6px;height:6px;background-color:#999;border-radius:50%;animation:blink 1.4s infinite both}.typing .dot:nth-child(2){animation-delay:.2s}.typing .dot:nth-child(3){animation-delay:.4s}@keyframes blink{0%,80%,100%{opacity:0}40%{opacity:1}}.fade-out{opacity:0;transition:opacity .3s ease}.header-avatar{width:28px;height:28px;border-radius:50%;margin-right:8px;vertical-align:middle}.whatsapp-img{width:10vw;max-width:60px;min-width:40px;height:auto;border-radius:50%;padding:5px;background:#25d366;box-shadow:0 0 10px rgba(0,0,0,0.2);transition:transform .2s ease}.whatsapp-img:hover{transform:scale(1.1)}