.app{display:flex;height:100vh;background:#111b21;position:relative}.chat-list{width:350px;background:#111b21;border-right:1px solid #2a3942;display:flex;flex-direction:column;transition:transform .3s ease}.chat-list.hidden{transform:translate(-100%);position:absolute;z-index:1}@media (max-width: 768px){.chat-list{width:100%;position:absolute;z-index:2}.chat-list.hidden{transform:translate(-100%)}}.chat-list-header{padding:15px 20px;background:#202c33;border-bottom:1px solid #2a3942;display:flex;justify-content:space-between;align-items:center;height:60px}.chat-list-header h2{margin:0;color:#e9edef;font-size:20px;font-weight:600}.chat-list-items{overflow-y:auto;flex:1}.chat-item{display:flex;align-items:center;padding:12px 20px;cursor:pointer;border-bottom:1px solid #2a3942;transition:background .2s}.chat-item:hover{background:#202c33}.chat-item.active{background:#2a3942}.avatar{width:50px;height:50px;border-radius:50%;background:#06c;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;font-weight:700;margin-right:15px;flex-shrink:0}.chat-info{flex:1;min-width:0}.chat-info h3{margin:0;color:#e9edef;font-size:16px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-info p{margin:3px 0 0;color:#8696a0;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-window{flex:1;display:flex;flex-direction:column;background:#0b141a;width:100%}.chat-header{display:flex;align-items:center;padding:10px 20px;background:#202c33;border-bottom:1px solid #2a3942;height:60px}.back-button{background:none;border:none;color:#8696a0;font-size:24px;cursor:pointer;padding:5px 10px;margin-right:10px;display:flex;align-items:center;justify-content:center;transition:color .2s}.back-button:hover{color:#e9edef}@media (min-width: 769px){.back-button{display:none}}.chat-header .avatar{margin-right:15px}.chat-header-info{display:flex;flex-direction:column}.chat-header-info h2{margin:0;color:#e9edef;font-size:16px;font-weight:500}.chat-header-info .status{color:#8696a0;font-size:13px;margin-top:2px}.messages{flex:1;overflow-y:auto;padding:20px;background-color:#0b141a;background-image:repeating-linear-gradient(45deg,transparent,transparent 10px,rgba(255,255,255,.02) 10px,rgba(255,255,255,.02) 20px)}.message{margin-bottom:10px;display:flex}.message.sent{justify-content:flex-end}.message.received{justify-content:flex-start}.message-content{max-width:60%;padding:8px 12px;border-radius:8px;word-wrap:break-word;position:relative;box-shadow:0 1px .5px #00000021}.message-content p{margin:0 0 4px;color:#e9edef;font-size:14px;line-height:19px}.message-time{font-size:11px;color:#ffffff80;float:right;margin-left:10px;margin-top:4px}.message.sent .message-content{background:#005c4b}.message.sent .message-content p{color:#e9edef}.message.received .message-content{background:#202c33}.message.received .message-content p{color:#e9edef}.message-input{display:flex;padding:10px 20px;background:#202c33;border-top:1px solid #2a3942;align-items:center;gap:10px}.message-input input{flex:1;padding:10px 15px;border:none;border-radius:8px;background:#2a3942;color:#e9edef;font-size:15px;outline:none}.message-input input::placeholder{color:#8696a0}.message-input button{width:45px;height:45px;border:none;border-radius:50%;background:#06c;color:#fff;font-size:20px;cursor:pointer;transition:background .2s;display:flex;align-items:center;justify-content:center;flex-shrink:0}.message-input button:hover{background:#0052a3}.no-chat{display:flex;align-items:center;justify-content:center;height:100%;color:#8696a0;padding:40px;text-align:center}.no-chat h2{font-size:18px;font-weight:400}.login{display:flex;align-items:center;justify-content:center;height:100vh;background:#111b21}.login-box{background:#202c33;padding:40px;border-radius:10px;text-align:center;min-width:350px}.login-box h1{color:#06c;margin-bottom:30px}.login-box input{width:100%;padding:12px 15px;border:none;border-radius:8px;background:#2a3942;color:#e9edef;font-size:15px;margin-bottom:15px;outline:none}.login-box button{width:100%;padding:12px;border:none;border-radius:8px;background:#06c;color:#fff;font-size:16px;cursor:pointer;transition:background .2s}.login-box button:hover{background:#0052a3}.auth-container{display:flex;align-items:center;justify-content:center;height:100vh;background:#111b21}.auth-box{background:#202c33;padding:40px;border-radius:10px;text-align:center;min-width:400px}.auth-box h1{color:#06c;margin-bottom:10px;font-size:28px}.auth-box h2{color:#e9edef;margin-bottom:30px;font-size:20px;font-weight:400}.auth-box input{width:100%;padding:12px 15px;border:none;border-radius:8px;background:#2a3942;color:#e9edef;font-size:15px;margin-bottom:15px;outline:none;box-sizing:border-box}.auth-box button{width:100%;padding:12px;border:none;border-radius:8px;background:#06c;color:#fff;font-size:16px;cursor:pointer;transition:background .2s;margin-top:10px}.auth-box button:hover:not(:disabled){background:#0052a3}.auth-box button:disabled{opacity:.6;cursor:not-allowed}.auth-switch{color:#8696a0;margin-top:20px;font-size:14px}.auth-switch span{color:#06c;cursor:pointer;text-decoration:underline}.auth-switch span:hover{color:#0052a3}.error-message{background:#d32f2f;color:#fff;padding:10px;border-radius:5px;margin-bottom:15px;font-size:14px}.profile-modal{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000}.profile-content{background:#202c33;border-radius:12px;width:90%;max-width:400px;max-height:80vh;overflow-y:auto;position:relative;box-shadow:0 5px 40px #00000080}.close-btn{position:absolute;top:15px;right:15px;background:none;border:none;color:#8696a0;font-size:24px;cursor:pointer;padding:5px;transition:color .2s;z-index:10}.close-btn:hover{color:#e9edef}.profile-header{padding:20px;border-bottom:1px solid #2a3942}.profile-header h2{margin:0;color:#e9edef;font-size:20px;font-weight:600}.profile-body{padding:30px 20px}.avatar-section{display:flex;flex-direction:column;align-items:center;margin-bottom:30px}.avatar-display{width:120px;height:120px;border-radius:50%;background:#06c;display:flex;align-items:center;justify-content:center;margin-bottom:20px;overflow:hidden;border:3px solid #2a3942}.avatar-display img{width:100%;height:100%;object-fit:cover}.avatar-placeholder{color:#fff;font-size:48px;font-weight:700}.upload-btn{padding:10px 20px;background:#06c;color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:14px;font-weight:500;transition:background .2s}.upload-btn:hover{background:#0052a3}.upload-btn:disabled{background:#8696a0;cursor:not-allowed}.profile-info{display:flex;flex-direction:column;gap:20px}.info-item{display:flex;flex-direction:column}.info-item label{color:#8696a0;font-size:12px;font-weight:600;text-transform:uppercase;margin-bottom:5px}.info-item p{color:#e9edef;font-size:16px;margin:0}.error-message{background:#f44336;color:#fff;padding:12px;border-radius:8px;font-size:14px;margin-top:15px;text-align:center}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{height:100vh}