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var(--ui-transition)}.login-input:focus{outline:none;border-color:var(--ui-color-brand)}.login-error{background:#ef44441a;color:var(--ui-color-danger);padding:var(--ui-space-3);border-radius:var(--ui-radius-sm);font-size:14px;margin-bottom:var(--ui-space-3);text-align:left}.login-back{position:absolute;top:var(--ui-space-6);left:var(--ui-space-6);background:none;border:none;color:var(--ui-color-text-muted);font-size:14px;cursor:pointer;display:flex;align-items:center;gap:var(--ui-space-2)}.login-back:hover{color:var(--ui-color-text)}.messenger-app{display:flex;height:100vh;overflow:hidden}.messenger-sidebar{width:360px;border-right:1px solid var(--ui-color-border);display:flex;flex-direction:column;background:var(--ui-color-bg);box-shadow:var(--ui-shadow-xs)}@media (max-width: 900px){.messenger-sidebar{position:fixed;left:0;top:0;bottom:0;z-index:100;transform:translate(-100%);transition:transform var(--ui-transition);box-shadow:var(--ui-shadow-lg)}.messenger-sidebar.open{transform:translate(0)}}.sidebar-header{height:60px;padding:0 var(--ui-space-4);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--ui-color-border)}.sidebar-title{font-size:24px;font-weight:700;color:var(--ui-color-text)}.sidebar-search{padding:var(--ui-space-3) var(--ui-space-4);border-bottom:1px solid var(--ui-color-border)}.search-input{width:100%;height:36px;padding:0 var(--ui-space-3);background:var(--ui-color-bg-muted);border:none;border-radius:var(--ui-radius-xl);font-size:14px}.search-input:focus{outline:none;background:var(--ui-color-bg-subtle)}.sidebar-nav{flex:1;overflow-y:auto}.nav-section{padding:var(--ui-space-2) 0}.nav-section-title{padding:var(--ui-space-2) var(--ui-space-4);font-size:13px;font-weight:600;color:var(--ui-color-text-muted);text-transform:uppercase;letter-spacing:.5px}.nav-item{display:flex;align-items:center;gap:var(--ui-space-3);padding:var(--ui-space-3) var(--ui-space-4);color:var(--ui-color-text);text-decoration:none;transition:background var(--ui-transition);cursor:pointer;border:none;background:none;width:100%;text-align:left;font-size:15px}.nav-item:hover{background:var(--ui-color-bg-muted)}.nav-item.active{background:#0084ff1a;color:var(--ui-color-brand);font-weight:600}.nav-icon{width:36px;height:36px;border-radius:50%;background:var(--ui-color-bg-muted);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:18px}.nav-item.active .nav-icon{background:var(--ui-color-brand);color:#fff}.nav-badge{margin-left:auto;background:var(--ui-color-brand);color:#fff;padding:2px 8px;border-radius:var(--ui-radius-xl);font-size:12px;font-weight:600}.messenger-main{flex:1;display:flex;flex-direction:column;background:var(--ui-color-bg)}.main-header{height:60px;padding:0 var(--ui-space-4);display:flex;align-items:center;gap:var(--ui-space-4);border-bottom:1px solid var(--ui-color-border);background:var(--ui-color-bg);box-shadow:var(--ui-shadow-xs)}.header-menu-btn{width:40px;height:40px;border:none;background:none;border-radius:50%;cursor:pointer;display:none;align-items:center;justify-content:center;flex-direction:column;gap:4px}.header-menu-btn:hover{background:var(--ui-color-bg-muted)}.header-menu-btn span{width:20px;height:2px;background:var(--ui-color-text)}@media (max-width: 900px){.header-menu-btn{display:flex}}.header-title{font-size:16px;font-weight:600}.header-actions{margin-left:auto;display:flex;align-items:center;gap:var(--ui-space-2)}.icon-btn{width:36px;height:36px;border:none;background:var(--ui-color-bg-muted);border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--ui-transition)}.icon-btn:hover{background:var(--ui-color-bg-subtle)}.chat-container-wrapper{height:calc(100vh - 60px);display:flex;flex-direction:column}.chat-container{display:flex;height:100%;position:relative}.chat-list-panel{width:360px;border-right:1px solid var(--ui-color-border);overflow-y:auto;transition:transform .3s ease;background:var(--ui-color-bg)}.chat-sidebar-list{flex:1;overflow-y:auto;padding:var(--ui-space-2)}.chat-room-item{display:flex;align-items:flex-start;gap:var(--ui-space-3);padding:var(--ui-space-3);border-radius:var(--ui-radius-sm);cursor:pointer;transition:background var(--ui-transition);text-decoration:none;color:inherit;border:none;background:none;width:100%;text-align:left}.chat-room-item:hover{background:var(--ui-color-bg-muted)}.chat-room-item.active{background:#0084ff1a}.chat-room-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:16px}.chat-room-item:nth-child(2n) .chat-room-avatar{background:linear-gradient(135deg,#f093fb,#f5576c)}.chat-room-item:nth-child(3n) .chat-room-avatar{background:linear-gradient(135deg,#4facfe,#00f2fe)}.chat-room-item:nth-child(4n) .chat-room-avatar{background:linear-gradient(135deg,#43e97b,#38f9d7)}.chat-room-item:nth-child(5n) .chat-room-avatar{background:linear-gradient(135deg,#fa709a,#fee140)}.chat-room-content{flex:1;min-width:0}.chat-room-name{font-weight:600;margin-bottom:var(--ui-space-1);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ui-color-text)}.chat-room-preview{font-size:13px;color:var(--ui-color-text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.messages-panel{flex:1;display:flex;flex-direction:column;transition:transform .3s ease;background:var(--ui-color-bg)}.messages-list{flex:1;overflow-y:auto;padding:var(--ui-space-4);display:flex;flex-direction:column;gap:var(--ui-space-2);background:var(--ui-color-bg)}.message-group{display:flex;align-items:flex-end;gap:var(--ui-space-2);max-width:75%}.message-group.sent{justify-content:flex-end;align-self:flex-end}.message-group.received{align-self:flex-start}.chat-avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:14px}.message-bubble{padding:var(--ui-space-3) var(--ui-space-4);border-radius:var(--ui-radius-lg);font-size:15px;line-height:1.4;word-wrap:break-word}.message-group.received .message-bubble{background:var(--ui-color-bg-muted);color:var(--ui-color-text);border-bottom-left-radius:4px}.message-group.sent .message-bubble{background:var(--ui-color-brand);color:#fff;border-bottom-right-radius:4px}.message-time{font-size:11px;color:var(--ui-color-text-muted);margin-top:var(--ui-space-1);padding:0 var(--ui-space-2)}.message-input-container{padding:var(--ui-space-4);border-top:1px solid var(--ui-color-border);background:var(--ui-color-bg)}.message-input-wrapper{display:flex;align-items:center;gap:var(--ui-space-2);background:var(--ui-color-bg-muted);border-radius:var(--ui-radius-xl);padding:var(--ui-space-2)}.message-input{flex:1;border:none;background:none;padding:var(--ui-space-2) var(--ui-space-3);font-size:15px;resize:none;outline:none;color:var(--ui-color-text)}.send-btn{width:32px;height:32px;border:none;background:var(--ui-color-brand);color:#fff;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--ui-transition)}.send-btn:hover:not(:disabled){background:var(--ui-color-brand-strong)}.send-btn:disabled{opacity:.5;cursor:not-allowed}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:var(--ui-space-4);background:var(--ui-color-bg)}.spinner{width:40px;height:40px;border:3px solid var(--ui-color-border);border-top-color:var(--ui-color-brand);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--ui-color-text-muted);text-align:center;padding:var(--ui-space-6)}.empty-icon{font-size:64px;margin-bottom:var(--ui-space-4)}.loading-text{color:var(--ui-color-text-muted);text-align:center;padding:var(--ui-space-6)}.status-badge{display:inline-block;padding:4px 8px;border-radius:var(--ui-radius-xl);font-size:11px;font-weight:600;text-transform:uppercase}.status-connected{background:#10b98126;color:var(--ui-color-success)}.status-connecting{background:#f59e0b33;color:#d97706}.status-reconnecting{background:#fb923c33;color:#c2410c}.status-disconnected{background:#ef444426;color:var(--ui-color-danger)}.alert{padding:var(--ui-space-4);border-radius:var(--ui-radius-sm);margin-bottom:var(--ui-space-4);font-size:14px}.alert-error{background:#ef44441a;color:var(--ui-color-danger);border:1px solid rgba(239,68,68,.3)}.alert-success{background:#10b9811a;color:var(--ui-color-success);border:1px solid rgba(16,185,129,.3)}.alert-info{background:#0084ff1a;color:var(--ui-color-brand);border:1px solid rgba(0,132,255,.3)}.page-container{max-width:800px;margin:0 auto;padding:var(--ui-space-6)}.page-title{font-size:28px;font-weight:700;margin-bottom:var(--ui-space-2);color:var(--ui-color-text)}.page-subtitle{font-size:15px;color:var(--ui-color-text-muted);margin-bottom:var(--ui-space-6)}.form-group{margin-bottom:var(--ui-space-4)}.form-label{display:block;font-weight:600;margin-bottom:var(--ui-space-2);font-size:14px;color:var(--ui-color-text)}.form-input{width:100%;height:44px;padding:0 var(--ui-space-3);border:1px solid var(--ui-color-border);border-radius:var(--ui-radius-sm);font-size:15px;background:var(--ui-color-bg);color:var(--ui-color-text)}.form-input:focus{outline:none;border-color:var(--ui-color-brand)}.btn{height:44px;padding:0 var(--ui-space-5);border:none;border-radius:var(--ui-radius-sm);font-size:15px;font-weight:600;cursor:pointer;transition:all var(--ui-transition)}.btn-primary{background:var(--ui-color-brand);color:#fff}.btn-primary:hover:not(:disabled){background:var(--ui-color-brand-strong)}.btn:disabled{opacity:.5;cursor:not-allowed}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:var(--ui-space-4);margin:var(--ui-space-6) 0}.stat-card{background:var(--ui-color-bg-muted);padding:var(--ui-space-4);border-radius:var(--ui-radius-md);text-align:center}.stat-value{font-size:32px;font-weight:700;color:var(--ui-color-brand);margin-bottom:var(--ui-space-2)}.stat-label{font-size:13px;color:var(--ui-color-text-muted);text-transform:uppercase;letter-spacing:.5px}.content-card{background:var(--ui-color-bg);border-radius:var(--ui-radius-md);padding:var(--ui-space-6);margin-bottom:var(--ui-space-4);border:1px solid var(--ui-color-border)}@media (max-width: 900px){.chat-list-panel{width:100%;border-right:none}.messages-panel{display:none;position:absolute;top:0;left:0;right:0;bottom:0;background:var(--ui-color-bg);z-index:10}.messages-panel.active{display:flex}.chat-list-panel.hidden{display:none}.mobile-back-btn{display:flex!important}}.sidebar-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:99;display:none}@media (max-width: 900px){.sidebar-backdrop.show{display:block}}.text-muted{color:var(--ui-color-text-muted)}.text-error{color:var(--ui-color-danger);font-size:14px}.text-success{color:var(--ui-color-success);font-size:14px}.error-boundary{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:var(--ui-space-6);text-align:center;gap:var(--ui-space-3);color:var(--ui-color-text)}.error-boundary pre{background:var(--ui-color-bg-muted);padding:var(--ui-space-3);border-radius:var(--ui-radius-md);max-width:640px;white-space:pre-wrap;color:var(--ui-color-text-muted)}.error-boundary button{border:none;border-radius:var(--ui-radius-xl);background:var(--ui-color-brand);color:#fff;padding:10px 20px;font-size:15px;cursor:pointer}.wallet-container{max-width:600px;margin:0 auto;padding:var(--ui-space-4)}.wallet-stats{margin-bottom:var(--ui-space-6)}.wallet-stat-main{text-align:center;padding:var(--ui-space-6);background:linear-gradient(135deg,var(--ui-color-brand) 0%,#00c6ff 100%);border-radius:var(--ui-radius-lg);color:#fff;margin-bottom:var(--ui-space-4);box-shadow:var(--ui-shadow-md)}.wallet-balance-label{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;opacity:.9;margin-bottom:var(--ui-space-2)}.wallet-balance-value{font-size:48px;font-weight:700;line-height:1;margin-bottom:var(--ui-space-1)}.wallet-balance-currency{font-size:14px;opacity:.8}.wallet-stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--ui-space-3)}.wallet-stat-card{background:var(--ui-color-bg);border:1px solid var(--ui-color-border);border-radius:var(--ui-radius-md);padding:var(--ui-space-4);text-align:center}.wallet-stat-value{font-size:24px;font-weight:700;color:var(--ui-color-brand);margin-bottom:var(--ui-space-1)}.wallet-stat-label{font-size:12px;color:var(--ui-color-text-muted);text-transform:uppercase;letter-spacing:.5px}.wallet-section{margin-bottom:var(--ui-space-6)}.wallet-section-title{font-size:16px;font-weight:700;color:var(--ui-color-text);margin-bottom:var(--ui-space-4)}.wallet-transactions{background:var(--ui-color-bg);border:1px solid var(--ui-color-border);border-radius:var(--ui-radius-md);overflow:hidden}.wallet-transaction{display:flex;align-items:center;gap:var(--ui-space-3);padding:var(--ui-space-4);border-bottom:1px solid var(--ui-color-border);transition:background var(--ui-transition)}.wallet-transaction:last-child{border-bottom:none}.wallet-transaction:hover{background:var(--ui-color-bg-muted)}.transaction-icon{width:40px;height:40px;border-radius:50%;background:var(--ui-color-bg-muted);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}.transaction-details{flex:1;min-width:0}.transaction-type{font-weight:600;color:var(--ui-color-text);margin-bottom:2px}.transaction-date{font-size:12px;color:var(--ui-color-text-muted)}.transaction-amount{font-size:16px;font-weight:700;flex-shrink:0}.transaction-amount.positive{color:var(--ui-color-success)}.transaction-amount.negative{color:var(--ui-color-danger)}.wallet-action-section{margin-bottom:var(--ui-space-4);border:1px solid var(--ui-color-border);border-radius:var(--ui-radius-md);overflow:hidden}.wallet-action-header{display:flex;align-items:center;justify-content:space-between;padding:var(--ui-space-4);background:var(--ui-color-bg);cursor:pointer;font-weight:600;color:var(--ui-color-text);list-style:none;-webkit-user-select:none;user-select:none;transition:background var(--ui-transition)}.wallet-action-header:hover{background:var(--ui-color-bg-muted)}.wallet-action-header::-webkit-details-marker{display:none}.wallet-action-icon{font-size:12px;transition:transform var(--ui-transition)}details[open] .wallet-action-icon{transform:rotate(180deg)}.wallet-form{padding:var(--ui-space-4);background:var(--ui-color-bg-muted);border-top:1px solid var(--ui-color-border)}.wallet-form .form-group:last-of-type{margin-bottom:var(--ui-space-4)}@media (max-width: 600px){.wallet-stats-grid{grid-template-columns:1fr}.wallet-balance-value{font-size:36px}.wallet-container{padding:var(--ui-space-3)}}