.btu-chat{position:fixed;right:22px;bottom:22px;z-index:9997}.btu-chat-bubble{display:inline-flex;align-items:center;gap:10px;border:0;background:linear-gradient(135deg,#AC3400,#ff7a3a);color:#fff;padding:12px 20px 12px 14px;border-radius:999px;box-shadow:0 16px 38px rgba(172,52,0,0.45),0 4px 12px rgba(0,0,0,0.18);font-weight:700;font-size:14px;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease;position:relative;}.btu-chat-bubble:hover{transform:translateY(-3px);box-shadow:0 22px 48px rgba(172,52,0,0.55),0 6px 16px rgba(0,0,0,0.2)}.btu-chat-bubble-icon{width:32px;height:32px;background:rgba(255,255,255,0.22);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:15px;}.btu-chat-bubble-pulse{position:absolute;top:6px;right:8px;width:10px;height:10px;background:#22c55e;border-radius:50%;box-shadow:0 0 0 4px rgba(255,255,255,0.85);animation:btuChatPulse 1.6s ease-in-out infinite;}@keyframes btuChatPulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.2);opacity:0.75}}.btu-chat-panel{position:absolute;right:0;bottom:70px;width:360px;max-width:calc(100vw - 32px);background:#fff;border-radius:18px;box-shadow:0 24px 70px rgba(15,23,42,0.22),0 4px 12px rgba(15,23,42,0.08);overflow:hidden;transform-origin:bottom right;animation:btuChatPop .22s ease;}@keyframes btuChatPop{from{transform:scale(.92);opacity:0}to{transform:scale(1);opacity:1}}.btu-chat-head{background:linear-gradient(135deg,#0b1020 0%,#1e2742 60%,#2a3458 100%);color:#fff;padding:18px 18px 18px 16px;display:flex;align-items:center;gap:12px;}.btu-chat-head-avatar{width:40px;height:40px;background:linear-gradient(135deg,#AC3400,#ff7a3a);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff;flex-shrink:0;}.btu-chat-head-text{flex:1}.btu-chat-head-text strong{display:block;font-size:15px;color:#fff}.btu-chat-head-text small{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:rgba(255,255,255,0.72)}.btu-chat-dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 8px rgba(34,197,94,0.6)}.btu-chat-close{background:rgba(255,255,255,0.1);border:0;color:rgba(255,255,255,0.85);width:30px;height:30px;border-radius:50%;cursor:pointer;transition:background .15s;}.btu-chat-close:hover{background:rgba(255,255,255,0.22);color:#fff}.btu-chat-body{padding:18px;max-height:70vh;overflow-y:auto}.btu-chat-greet p{font-size:13.5px;color:#475569;margin:0 0 14px;line-height:1.5}.btu-chat-form{display:flex;flex-direction:column;gap:6px;position:relative}.btu-chat-label{font-size:12px;font-weight:600;color:#475569;margin-top:8px}.btu-chat-form input,.btu-chat-form textarea{border:1px solid #e2e8f0;border-radius:10px;padding:10px 12px;font-size:14px;color:#0f172a;background:#f8fafc;transition:border .15s,background .15s;width:100%;font-family:inherit;}.btu-chat-form input:focus,.btu-chat-form textarea:focus{outline:none;border-color:#AC3400;background:#fff;box-shadow:0 0 0 3px rgba(172,52,0,0.12);}.btu-chat-loggedin{background:#f1f5f9;border-radius:10px;padding:10px 12px;font-size:13px;color:#475569;margin:0 0 8px;}.btu-chat-loggedin strong{color:#0f172a}.btu-chat-submit{margin-top:12px;background:linear-gradient(135deg,#AC3400,#ff7a3a);color:#fff;border:0;padding:13px 22px;border-radius:10px;font-weight:700;font-size:14px;cursor:pointer;transition:transform .15s,box-shadow .15s;display:inline-flex;align-items:center;justify-content:center;gap:10px;}.btu-chat-submit:hover:not([disabled]){transform:translateY(-1px);box-shadow:0 12px 28px rgba(172,52,0,0.4)}.btu-chat-submit[disabled]{opacity:.7;cursor:not-allowed}.btu-chat-spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,0.3);border-top-color:#fff;border-radius:50%;display:none;animation:btuChatSpin .8s linear infinite;}@keyframes btuChatSpin{to{transform:rotate(360deg)}}.btu-chat-submit.is-loading .btu-chat-spinner{display:inline-block}.btu-chat-success{text-align:center;padding:22px 4px 8px;}.btu-chat-success-icon{width:64px;height:64px;margin:0 auto 14px;background:linear-gradient(135deg,#22c55e,#16a34a);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:28px;box-shadow:0 14px 30px rgba(34,197,94,0.35);}.btu-chat-success h4{color:#0f172a;font-weight:800;margin:0 0 8px;font-size:17px}.btu-chat-success-msg{color:#475569;font-size:14px;margin:0 0 10px}.btu-chat-success-ticket{color:#475569;font-size:13px;margin:6px 0 0}.btu-chat-success-ticket strong{color:#AC3400}.btu-chat-error{background:#fef2f2;color:#b91c1c;border-radius:10px;padding:10px 14px;margin-top:12px;font-size:13px;border:1px solid #fecaca;}@media (max-width:480px){.btu-chat{right:12px;bottom:12px}.btu-chat-bubble-label{display:none}.btu-chat-bubble{padding:12px}.btu-chat-panel{width:calc(100vw - 24px);bottom:80px}}