#chat-toggle{position:fixed;bottom:40px;left:20px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;padding:12px 20px;border-radius:25px;cursor:pointer;z-index:9999;font-weight:600;font-size:14px;box-shadow:0 4px 15px rgba(102,126,234,.4);transition:all .3s ease;border:none}#chat-toggle:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(102,126,234,.6)}#chat-box{position:fixed;bottom:120px;left:20px;width:450px;height:500px;background:#fff;border:none;border-radius:20px;display:none;flex-direction:column;z-index:9999;box-shadow:0 10px 40px rgba(0,0,0,.15);overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;animation:slideIn .3s ease}#chat-header{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;padding:20px;text-align:center}#chat-header h3{margin:0 0 8px;font-size:18px;font-weight:600;color:#fff}#chat-header .warning-text{margin:0;font-size:12px;opacity:.9;line-height:1.4;color:#fff}#chat-messages{flex:1;padding:20px;overflow-y:auto;font-size:14px;background:#f8f9fa}#chat-messages .user-message{background:#e3f2fd;padding:12px 16px;border-radius:18px;margin-bottom:12px;border-bottom-left-radius:4px;max-width:90%;margin-left:auto;box-shadow:0 2px 8px rgba(0,0,0,.1);line-height:1.4;min-height:44px;display:flex;align-items:center}#chat-messages .ai-message{background:#fff;padding:12px 16px;border-radius:18px;margin-bottom:12px;border-bottom-right-radius:4px;max-width:90%;box-shadow:0 2px 8px rgba(0,0,0,.1);border-left:3px solid #4caf50;line-height:1.4;min-height:44px;display:flex;align-items:center}#chat-messages .ai-message.error{border-left-color:#f44336;background:#ffebee}#chat-messages .user-message strong{margin-right:8px}#chat-messages .ai-message strong{margin-right:8px}#chat-input{border-top:1px solid #e0e0e0;display:flex;padding:15px;background:#fff;gap:8px}#chat-input textarea{flex:1;border:2px solid #e0e0e0;border-radius:15px;padding:12px 16px;font-size:14px;outline:none;transition:border-color .3s ease;resize:none;font-family:inherit;line-height:1.4;min-height:60px;max-height:120px}#chat-input textarea:focus{border-color:#667eea}#chat-input textarea::placeholder{color:#999;font-style:italic}#chat-input button{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;border:none;padding:12px 20px;border-radius:25px;cursor:pointer;font-weight:600;font-size:14px;transition:all .3s ease;min-width:80px}#chat-input button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px rgba(102,126,234,.4)}#chat-input button:disabled{opacity:.6;cursor:not-allowed;transform:none}#chat-input button.loading{position:relative;cursor:wait;opacity:.9;font-size:0px}#chat-input button.loading:before{content:'Generating…';color:#fff;font-size:14px;padding-right:12px}#chat-input button.loading:after{content:'';position:absolute;right:8px;top:50%;width:14px;height:14px;margin-top:-7px;border-radius:50%;border:2px solid rgba(255,255,255,.6);border-top-color:#fff;animation:chat-spin .7s linear infinite}#chat-undo{background:#f44336 !important;min-width:60px}#chat-undo:hover{background:#d32f2f !important}#chat-messages::-webkit-scrollbar{width:6px}#chat-messages::-webkit-scrollbar-track{background:#f1f1f1;border-radius:3px}#chat-messages::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:3px}#chat-messages::-webkit-scrollbar-thumb:hover{background:#a8a8a8}@keyframes slideIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes chat-spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}@media (max-width:768px){#chat-box{width:calc(100vw - 40px);left:20px;right:20px}#chat-toggle{left:20px;right:20px;text-align:center}}