body{font-family:Arial,sans-serif;height:100vh;margin:0;overflow:hidden;padding:0}#nicknameModal,body{align-items:center;display:flex;justify-content:center}#nicknameModal{background-color:rgba(0,0,0,.5);height:100%;left:0;position:fixed;top:0;width:100%;z-index:1000}.modal-content{align-items:center;background-color:#fff;border-radius:10px;box-shadow:0 4px 8px rgba(0,0,0,.2);display:flex;flex-direction:column;height:auto;justify-content:center;max-width:500px;min-width:300px;padding:20px;text-align:center;transition:transform .3s ease;width:40%}.modal-content h2{color:#333;font-size:1.7em;margin-bottom:20px}#nicknameInput{border:1px solid #ccc;font-size:1.3em;height:15%;margin-bottom:20px;padding:10px;width:90%}#continueButton{background-color:#007bff;border:none;border-radius:20px;color:#fff;cursor:pointer;font-size:1.3em;padding:15px;width:60%}#continueButton:hover{background-color:#0056b3}#chatContainer{border-radius:10px;display:flex;height:90vh;max-width:1200px;overflow:hidden;width:90vw}#userList{background-color:#f4f6fa;border:1px solid #000;border-radius:10px 0 0 10px;display:flex;flex-direction:column;gap:7px;height:48%;margin-left:24px;margin-top:20px;max-height:100%;opacity:.85;overflow-y:auto;padding:10px;transform:translateX(1px);width:20%}.user-item{align-items:center;display:flex;margin-bottom:10px;margin-left:10px}.user-item:first-child{margin-top:16px}.avatar{background-image:url(3562194d850cca995097.png);background-position:bottom;background-repeat:no-repeat;background-size:cover;background-size:109%;border:1px solid #000;border-radius:50%;height:3.4em;margin-right:10px;width:3.4em}.user-name{font-size:1.55em}.user-name.you{color:#fe7c68}#chatWrapper{background-color:#f4f6fa;border:1px solid #000;border-radius:10px;flex:1;flex-direction:column}#chatBox,#chatWrapper{display:flex;overflow:hidden;position:relative}#chatBox{flex:1;overflow-y:auto;padding:10px}#messagesContainer{display:flex;flex:1;flex-direction:column;gap:10px;overflow-y:auto;scrollbar-width:none;scrollbar-width:thin;-ms-overflow-style:none}#messagesContainer::-webkit-scrollbar{display:none}#customScrollBar{align-items:center;background:#e0e0e0;border-radius:5px;bottom:10px;display:flex;flex-direction:column;height:calc(100% - 10px);justify-content:space-between;padding:0 0 40px;position:absolute;right:5px;top:10px;width:19px}#customScrollThumb{background:#888;border-radius:5px;cursor:grab;height:30px;left:0;position:absolute;top:0;width:100%}.scrollButton{align-items:center;border-radius:5px;color:#888;cursor:pointer;display:flex;font-weight:700;height:20px;justify-content:center;width:100%}.scrollButton:hover{background:#555}#chatBox::-webkit-scrollbar{display:none}.message{border-radius:10px;font-size:1.55em;padding:20px;position:relative;width:46%}.message.you{align-self:flex-end;background-color:#007bff;color:#fff;margin-right:30px;opacity:.9}.message.other{align-self:flex-start;background-color:#e9ecef;color:#333}.message .meta{color:#666;font-size:.8em;font-weight:500;margin-bottom:8.5px}.message.you .meta{color:#fe7c68}#messageInput{border:1px solid #ccc;border-radius:20px;font-size:1.35em;margin:10px;padding:15px 8px;width:calc(100% - 40px)}#messageInput:focus{border-color:#000;outline:none}#chatBox::-webkit-scrollbar{width:8px}#chatBox::-webkit-scrollbar-track{background:#f1f1f1;border-radius:10px}#chatBox::-webkit-scrollbar-thumb{background:#888;border-radius:10px}#chatBox::-webkit-scrollbar-thumb:hover{background:#555}@media (max-width:768px){#chatContainer{border-radius:0;flex-direction:column;height:100vh;margin:0;width:100vw}#userList{background-color:#fff;border-bottom:1px solid #ddd;border-radius:0;border-right:none;box-shadow:0 2px 4px rgba(0,0,0,.1);height:20%;margin-left:0;margin-top:0;opacity:1;transform:none;width:100%}.user-item{margin-bottom:8px}.user-item:first-child{margin-top:10px}.avatar{height:2.5em;width:2.5em}.user-name{font-size:1.2em}#chatWrapper{background-color:#f4f6fa;border:none;border-radius:0;flex:1}#chatBox{padding:5px}#messagesContainer{gap:8px}.message{font-size:1.2em;padding:15px;width:80%}.message.you{margin-right:10px}.message.other{margin-left:10px}#messageInput{border-radius:15px;font-size:1.2em;margin:5px;padding:10px;width:calc(100% - 20px)}#customScrollBar{right:2px;width:15px}.scrollButton{font-size:.8em;height:15px}#customScrollThumb{height:20px}}@media (max-width:480px){#userList{height:15%}.avatar{height:2em;width:2em}.message,.user-name{font-size:1em}.message{padding:10px;width:90%}#messageInput{border-radius:10px;font-size:1em;padding:8px}#customScrollBar{width:12px}.scrollButton{font-size:.7em;height:12px}#customScrollThumb{height:15px}}