*{box-sizing:border-box;margin:0;padding:0}body{color:#e9edef;background:#111b21;height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;overflow:hidden}#root{height:100vh;display:flex}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-thumb{background:#2a3942;border-radius:2px}.login-page{background:#0b141a;justify-content:center;align-items:center;width:100%;display:flex}.login-box{background:#202c33;border-radius:16px;width:380px;padding:40px;box-shadow:0 16px 48px #00000080}.login-logo{text-align:center;margin-bottom:8px;font-size:52px}.login-box h1{text-align:center;color:#00a884;margin-bottom:4px;font-size:24px;font-weight:700}.login-box>p{text-align:center;color:#8696a0;margin-bottom:28px;font-size:13px}.login-box input{color:#e9edef;background:#2a3942;border:1.5px solid #0000;border-radius:8px;outline:none;width:100%;margin-bottom:10px;padding:12px 14px;font-size:14px;transition:all .2s}.login-box input:focus{border-color:#00a884}.login-box button{color:#fff;cursor:pointer;background:#00a884;border:none;border-radius:8px;width:100%;margin-top:4px;padding:12px;font-size:15px;font-weight:600;transition:all .2s}.login-box button:hover{background:#017561}.login-error{color:#f15c6d;text-align:center;margin-top:10px;font-size:13px}.app-container{width:100%;height:100vh;display:flex;overflow:hidden}.nav-bar{background:#1a2530;border-right:1px solid #2a3942;flex-direction:column;align-items:center;gap:4px;width:60px;min-width:60px;padding:12px 0;display:flex}.nav-logo{color:#fff;background:#00a884;border-radius:10px;justify-content:center;align-items:center;width:36px;height:36px;margin-bottom:8px;font-size:15px;font-weight:700;display:flex}.nav-icons{flex-direction:column;align-items:center;gap:4px;display:flex}.nav-icon{color:#8696a0;cursor:pointer;background:0 0;border:none;border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;transition:all .2s;display:flex}.nav-icon:hover{color:#e9edef;background:#2a3942}.nav-icon.active{color:#00a884;background:#00a88420}.nav-bottom{flex-direction:column;align-items:center;gap:4px;margin-top:auto;display:flex}.sidebar{background:#111b21;border-right:1px solid #2a3942;flex-direction:column;flex-shrink:0;width:360px;min-width:300px;max-width:360px;display:flex}.sidebar-header{background:#202c33;border-bottom:1px solid #2a3942;padding:14px 16px 10px}.sidebar-title{color:#e9edef;margin-bottom:2px;font-size:17px;font-weight:700}.sidebar-user{color:#8696a0;font-size:12px}.search-box{background:#111b21;border-bottom:1px solid #1f2c33;padding:8px 12px}.search-input{color:#e9edef;background:#2a3942;border:none;border-radius:8px;outline:none;width:100%;padding:8px 14px;font-size:13px}.search-input::placeholder{color:#8696a0}.filter-tabs{background:#111b21;border-bottom:1px solid #2a3942;gap:6px;padding:8px 12px;display:flex}.filter-tab{color:#8696a0;cursor:pointer;background:#2a3942;border:none;border-radius:20px;padding:5px 14px;font-size:12px;transition:all .2s}.filter-tab.active{color:#fff;background:#00a884}.contact-list{flex:1;overflow-y:auto}.contact-item{cursor:pointer;border-bottom:1px solid #1f2c33;align-items:center;gap:10px;padding:10px 14px;transition:all .15s;display:flex}.contact-item:hover{background:#1f2c33}.contact-item.active{background:#2a3942}.contact-avatar{color:#fff;background:#2a6278;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;font-size:17px;font-weight:700;display:flex}.contact-info{flex:1;min-width:0}.contact-name-row{justify-content:space-between;align-items:center;margin-bottom:3px;display:flex}.contact-name{color:#e9edef;white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;font-size:15px;font-weight:500;overflow:hidden}.contact-time{color:#8696a0;flex-shrink:0;margin-left:6px;font-size:11px}.contact-preview-row{justify-content:space-between;align-items:center;display:flex}.contact-preview{color:#8696a0;white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;font-size:13px;overflow:hidden}.unread-badge{color:#fff;background:#00a884;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;min-width:18px;height:18px;padding:0 3px;font-size:11px;font-weight:700;display:flex}.chat-area{background:#0b141a;flex-direction:column;flex:1;min-width:0;display:flex}.chat-empty{color:#8696a0;flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex}.chat-header{background:#202c33;border-bottom:1px solid #2a3942;flex-shrink:0;align-items:center;gap:12px;padding:10px 16px;display:flex}.messages-container{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3C/svg%3E");flex-direction:column;flex:1;gap:2px;padding:12px 8%;display:flex;overflow-y:auto}.date-divider{text-align:center;justify-content:center;align-items:center;margin:10px 0;display:flex}.date-divider span{color:#8696a0;background:#1f2c33;border:1px solid #2a3942;border-radius:8px;padding:4px 12px;font-size:11px}.message-bubble{word-break:break-word;border-radius:8px;max-width:65%;margin-bottom:2px;padding:7px 12px 4px;position:relative}.message-bubble.out{background:#005c4b;border-radius:8px 0 8px 8px;align-self:flex-end}.message-bubble.in{background:#202c33;border-radius:0 8px 8px;align-self:flex-start}.message-text{color:#e9edef;margin-bottom:2px;font-size:14px;line-height:1.4;display:block}.message-time{color:#8696a0;float:right;margin-left:8px;font-size:11px}.message-check{color:#53bdeb;margin-left:4px;font-size:11px}.message-input-area{background:#202c33;border-top:1px solid #2a3942;flex-shrink:0;align-items:center;gap:10px;padding:10px 16px;display:flex}.message-input{color:#e9edef;background:#2a3942;border:none;border-radius:24px;outline:none;flex:1;padding:10px 16px;font-size:14px}.message-input::placeholder{color:#8696a0}.send-btn{color:#fff;cursor:pointer;background:#00a884;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;transition:all .2s;display:flex}.send-btn:hover{background:#017561}.send-btn:disabled{cursor:not-allowed;background:#2a3942}.modal-overlay{z-index:1000;background:#000000b3;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:#202c33;border-radius:12px;flex-direction:column;width:420px;max-width:95vw;max-height:90vh;display:flex;overflow:hidden}.modal-header{color:#e9edef;background:#2a3942;flex-shrink:0;justify-content:space-between;align-items:center;padding:16px 20px;font-size:16px;font-weight:600;display:flex}.modal-close{color:#8696a0;cursor:pointer;background:0 0;border:none;padding:0;font-size:20px;line-height:1}.modal-close:hover{color:#e9edef}.modal-body{flex:1;padding:20px;overflow-y:auto}.modal-footer{background:#2a3942;flex-shrink:0;justify-content:flex-end;gap:10px;padding:14px 20px;display:flex}.form-group{margin-bottom:14px}.form-group label{color:#8696a0;margin-bottom:6px;font-size:12px;font-weight:500;display:block}.form-input{color:#e9edef;background:#2a3942;border:1.5px solid #0000;border-radius:8px;outline:none;width:100%;padding:10px 12px;font-family:inherit;font-size:14px;transition:all .2s}.form-input:focus{border-color:#00a884}.btn-primary{color:#fff;cursor:pointer;background:#00a884;border:none;border-radius:8px;padding:9px 20px;font-size:14px;font-weight:600;transition:all .2s}.btn-primary:hover{background:#017561}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{color:#e9edef;cursor:pointer;background:#2a3942;border:none;border-radius:8px;padding:9px 20px;font-size:14px;transition:all .2s}.btn-secondary:hover{background:#3a4a52}.error-msg{color:#f15c6d;background:#f15c6d20;border:1px solid #f15c6d40;border-radius:8px;padding:8px 12px;font-size:13px}