.chat-launcher{position:fixed;width:60px;height:60px;background-color:#1ea4c3;border-radius:50%;box-shadow:0 4px 8px rgba(0,0,0,0.2);cursor:pointer;z-index:1000;display:flex;justify-content:center;align-items:center;transition:background-color 0.2s ease}.chat-launcher:hover{background-color:#1891ae}.chat-launcher i{color:#ffffff;font-size:28px}.btn-cskh{bottom:20px;right:20px}.btn-call{bottom:90px;right:20px}.btn-zalo{bottom:160px;right:20px}.modal-chat-cskh{position:fixed;bottom:80px;right:20px;width:350px;height:450px;background-color:#ffffff;border-radius:8px;box-shadow:0 4px 8px rgba(0,0,0,0.1);z-index:1001;display:flex;flex-direction:column;overflow:hidden;transition:opacity 0.3s ease, visibility 0.3s ease}.modal-chat-cskh.hidden{display:none !important}.modal-chat-cskh .modal-header{display:flex;justify-content:space-between;align-items:center;padding:10px 15px;background-color:#1ea4c3;color:#ffffff}.modal-chat-cskh .modal-header .modal-title{font-size:16px;margin:0}.modal-chat-cskh .modal-header .btn-close{background:none;border:none;font-size:20px;color:#ffffff;cursor:pointer;line-height:1}.modal-chat-cskh .chat-messages{flex:1;padding:10px;background-color:#f5f5f5;overflow-y:auto;display:flex;flex-direction:column}.chat-message{max-width:75%;margin-bottom:10px;padding:8px 12px;border-radius:18px;line-height:1.4;word-wrap:break-word}.chat-message.received{background-color:#e4e6eb;align-self:flex-start;border-top-left-radius:4px;border-top-right-radius:18px;border-bottom-right-radius:18px;border-bottom-left-radius:18px}.chat-message.sent{background-color:#1ea4c3;color:#ffffff;align-self:flex-end;border-top-left-radius:18px;border-top-right-radius:4px;border-bottom-right-radius:4px;border-bottom-left-radius:18px}.modal-chat-cskh .chat-input-area{display:flex;align-items:center;padding:8px 10px;border-top:1px solid #ddd;background-color:#ffffff}.modal-chat-cskh .chat-input-area input[type="text"]{flex:1;padding:8px 12px;border:1px solid #ccc;border-radius:18px;outline:none;font-size:14px;margin-right:8px}.modal-chat-cskh .chat-input-area button.send-btn{padding:8px 12px;background-color:#1ea4c3;color:#ffffff;border:none;border-radius:18px;cursor:pointer;font-size:14px;transition:background-color 0.2s ease}.modal-chat-cskh .chat-input-area button.send-btn:hover{background-color:#1ea4c3}