@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap";:root{--primary: #229ED9;--primary-dark: #1a7fb0;--primary-light: #e8f4fd;--primary-rgb: 34, 158, 217;--accent: #10b981;--danger: #ef4444;--warning: #f59e0b;--bg: #f0f2f5;--white: #ffffff;--surface: #ffffff;--surface2: #f8fafc;--text-primary: #0f172a;--text-secondary: #64748b;--text-muted: #94a3b8;--border: rgba(0, 0, 0, .06);--border-strong: rgba(0, 0, 0, .12);--separator: #e2e8f0;--shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.05);--shadow-lg: 0 10px 30px rgba(0,0,0,.12), 0 4px 10px rgba(0,0,0,.06);--shadow-xl: 0 20px 60px rgba(0,0,0,.15);--radius-sm: 6px;--radius: 10px;--radius-lg: 14px;--radius-xl: 20px;--radius-full: 9999px;--sidebar-width: 360px;--transition: all .2s cubic-bezier(.4, 0, .2, 1);--chat-bg: linear-gradient(135deg, #e8f4fd 0%, #d1ebf8 100%);--msg-mine-bg: #229ED9;--msg-other-bg: #ffffff}[data-theme=dark]{--primary: #38bdf8;--primary-dark: #0ea5e9;--primary-light: rgba(56, 189, 248, .1);--bg: #0f1117;--white: #1e2330;--surface: #1a2035;--surface2: #151b2c;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--border: rgba(255,255,255,.06);--border-strong: rgba(255,255,255,.1);--separator: rgba(255,255,255,.08);--shadow-sm: 0 1px 3px rgba(0,0,0,.3);--shadow-md: 0 4px 12px rgba(0,0,0,.4);--shadow-lg: 0 10px 30px rgba(0,0,0,.5);--chat-bg: linear-gradient(135deg, #0d1117 0%, #0f1923 100%);--msg-mine-bg: #1d6fa5;--msg-other-bg: #1e2330}[data-theme=emerald]{--primary: #059669;--primary-dark: #047857;--primary-light: #d1fae5;--primary-rgb: 5, 150, 105;--chat-bg: linear-gradient(135deg, #f0fdf4 0%, #d1fae5 100%);--msg-mine-bg: #059669}*,*:before,*:after{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html{height:100%}body{margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;font-size:14px;line-height:1.5;color:var(--text-primary);background:var(--bg);overscroll-behavior:none;-webkit-font-smoothing:antialiased;height:100%}#root{height:100%}input,textarea,button{font-family:inherit}input,textarea{font-size:16px!important}button{cursor:pointer;border:none;background:none}a{text-decoration:none;color:inherit}img{display:block}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#00000026;border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#00000047}[data-theme=dark] ::-webkit-scrollbar-thumb{background:#ffffff1a}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}@keyframes ripple{0%{transform:scale(.8);opacity:1}to{transform:scale(2.5);opacity:0}}@keyframes msgIn{0%{opacity:0;transform:scale(.94) translateY(6px)}to{opacity:1;transform:scale(1) translateY(0)}}.animate-spin{animation:spin 1s linear infinite}.animate-pulse{animation:pulse 1.5s ease-in-out infinite}.animate-fade-in{animation:fadeIn .25s ease forwards}.app-container{display:flex;height:100dvh;overflow:hidden;width:100vw;background:var(--bg)}.sidebar-panel{width:var(--sidebar-width);min-width:var(--sidebar-width);display:flex;flex-direction:column;background:var(--surface);border-right:1px solid var(--border);height:100%;position:relative;flex-shrink:0;box-shadow:2px 0 8px #00000008;transition:var(--transition)}.chat-panel{flex:1;display:flex;flex-direction:column;background:var(--chat-bg);height:100%;min-width:0;position:relative}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:0 16px;height:58px;background:var(--primary);flex-shrink:0;position:relative}.sidebar-logo{font-size:20px;font-weight:800;color:#fff;letter-spacing:-.5px}.sidebar-logo span{opacity:.7;font-weight:400;font-size:11px;margin-left:6px}.sidebar-nav{display:flex;background:var(--surface);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom);flex-shrink:0}.nav-tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:10px 0 8px;color:var(--text-muted);position:relative;transition:color .2s;background:none;border:none;cursor:pointer}.nav-tab.active{color:var(--primary)}.nav-tab.active:after{content:"";position:absolute;top:0;left:25%;right:25%;height:2px;background:var(--primary);border-radius:0 0 var(--radius-sm) var(--radius-sm)}.nav-tab span{font-size:10px;font-weight:600}.nav-badge{position:absolute;top:5px;left:50%;margin-left:2px;min-width:16px;height:16px;padding:0 4px;background:var(--danger);color:#fff;border-radius:var(--radius-full);font-size:9px;font-weight:700;display:flex;align-items:center;justify-content:center}.sidebar-item{display:flex;align-items:center;padding:10px 14px;gap:12px;cursor:pointer;border-radius:var(--radius);margin:1px 8px;transition:var(--transition);position:relative}.sidebar-item:hover{background:var(--primary-light)}.sidebar-item:hover .item-name{color:var(--primary)}.sidebar-item.active{background:var(--primary-light)}.sidebar-item.active .item-name{color:var(--primary);font-weight:700}.item-name{font-size:14px;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s}.item-sub{font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:1px}.item-sub.online{color:var(--accent)}.search-wrap{padding:10px 14px;background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0}.search-box{display:flex;align-items:center;background:var(--surface2);border:1.5px solid var(--border);border-radius:var(--radius-full);padding:8px 14px;gap:8px;transition:var(--transition)}.search-box:focus-within{border-color:var(--primary);background:var(--white);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.08)}.search-box input{flex:1;background:none;border:none;outline:none;font-size:14px!important;color:var(--text-primary)}.search-box input::placeholder{color:var(--text-muted)}.chat-header{display:flex;align-items:center;gap:12px;padding:10px 16px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);flex-shrink:0;height:58px}.chat-messages{flex:1;overflow-y:auto;padding:16px 20px;display:flex;flex-direction:column;gap:4px;scroll-behavior:smooth}.msg-row{display:flex;animation:msgIn .2s ease;position:relative}.msg-row.mine{justify-content:flex-end}.msg-row.other{justify-content:flex-start}.msg-bubble{max-width:68%;padding:10px 14px;position:relative;word-break:break-word;font-size:14.5px;line-height:1.5}.msg-row.mine .msg-bubble{background:var(--msg-mine-bg);color:#fff;border-radius:16px 16px 3px;box-shadow:0 2px 8px rgba(var(--primary-rgb),.25)}.msg-row.other .msg-bubble{background:var(--msg-other-bg);color:var(--text-primary);border-radius:16px 16px 16px 3px;box-shadow:var(--shadow-sm);border:1px solid var(--border)}.msg-time{font-size:9px;font-weight:500;margin-top:4px;text-align:right}.msg-row.mine .msg-time{color:#ffffffa6}.msg-row.other .msg-time{color:var(--text-muted)}.date-separator{display:flex;align-items:center;gap:12px;margin:12px 0 8px}.date-separator:before,.date-separator:after{content:"";flex:1;height:1px;background:var(--border-strong)}.date-separator span{font-size:11px;font-weight:600;color:var(--text-muted);padding:3px 10px;background:#0000000d;border-radius:var(--radius-full);white-space:nowrap}[data-theme=dark] .date-separator span{background:#ffffff0d}.typing-indicator{display:flex;align-items:center;gap:4px;padding:10px 14px;background:var(--msg-other-bg);border-radius:16px 16px 16px 3px;width:fit-content;box-shadow:var(--shadow-sm);border:1px solid var(--border)}.typing-dot{width:7px;height:7px;background:var(--text-muted);border-radius:50%;animation:bounce 1.4s ease-in-out infinite}.typing-dot:nth-child(2){animation-delay:.16s}.typing-dot:nth-child(3){animation-delay:.32s}.reply-preview{border-left:3px solid var(--primary);padding:4px 8px;margin-bottom:6px;font-size:12px;opacity:.8;border-radius:0 4px 4px 0;background:#0000000d}.msg-row.mine .reply-preview{border-color:#ffffff80;background:#ffffff1a}.input-bar{display:flex;align-items:flex-end;gap:8px;padding:10px 16px;background:var(--surface);border-top:1px solid var(--border);padding-bottom:calc(10px + env(safe-area-inset-bottom));flex-shrink:0}.input-field{flex:1;padding:10px 16px;border:1.5px solid var(--separator);border-radius:var(--radius-xl);font-size:14.5px!important;outline:none;background:var(--surface2);color:var(--text-primary);resize:none;max-height:120px;line-height:1.4;transition:var(--transition)}.input-field:focus{border-color:var(--primary);background:var(--white);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.08)}.input-field::placeholder{color:var(--text-muted)}.btn-icon{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-full);color:var(--text-secondary);transition:var(--transition);flex-shrink:0;background:none;border:none;cursor:pointer}.btn-icon:hover{background:var(--primary-light);color:var(--primary);transform:scale(1.1)}.btn-send{width:38px;height:38px;border-radius:var(--radius-full);background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:var(--transition);border:none;cursor:pointer;box-shadow:0 2px 8px rgba(var(--primary-rgb),.35)}.btn-send:hover{background:var(--primary-dark);transform:scale(1.05)}.btn-send:disabled{background:var(--separator);box-shadow:none;cursor:default;transform:none}.reply-bar{display:flex;align-items:center;gap:10px;padding:8px 16px;background:var(--primary-light);border-top:1px solid var(--border);animation:fadeIn .15s ease}.reply-bar-content{flex:1;min-width:0;border-left:3px solid var(--primary);padding-left:8px}.reply-bar-name{font-size:12px;font-weight:700;color:var(--primary)}.reply-bar-text{font-size:12px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.emoji-picker{position:absolute;bottom:70px;left:16px;width:330px;height:250px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:200;overflow-y:auto;padding:10px;display:grid;grid-template-columns:repeat(8,1fr);gap:2px;animation:scaleIn .15s ease;transform-origin:bottom 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rgba(var(--primary-rgb),.4)}.btn-primary:active{transform:translateY(0)}.btn-ghost{background:var(--surface2);color:var(--text-primary);border:1px solid var(--border)}.btn-ghost:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.btn-danger{background:#fee2e2;color:var(--danger)}.btn-danger:hover{background:var(--danger);color:#fff}.btn-sm{padding:6px 12px;font-size:12px}.btn-xs{padding:3px 9px;font-size:11px;border-radius:var(--radius-sm)}.btn-round{border-radius:var(--radius-full)!important}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a8c;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:9000;padding:20px;animation:fadeIn .2s ease}.modal{background:var(--surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);width:100%;max-width:480px;animation:scaleIn .2s ease;overflow:hidden}.modal-lg{max-width:820px}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);background:var(--surface2)}.modal-title{font-size:15px;font-weight:700;color:var(--text-primary)}.modal-body{padding:20px}.modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:14px 20px;border-top:1px solid var(--border);background:var(--surface2)}.form-group{margin-bottom:16px}.form-label{display:block;font-size:12px;font-weight:700;color:var(--text-secondary);margin-bottom:6px;letter-spacing:.3px;text-transform:uppercase}.form-input{width:100%;padding:11px 14px;border:1.5px solid var(--separator);border-radius:var(--radius);font-size:14px!important;color:var(--text-primary);background:var(--surface2);outline:none;transition:var(--transition)}.form-input:focus{border-color:var(--primary);background:var(--white);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.08)}.form-input::placeholder{color:var(--text-muted)}.form-input:disabled{opacity:.6;cursor:not-allowed}.section-label{font-size:10.5px;font-weight:700;color:var(--text-muted);letter-spacing:.6px;text-transform:uppercase;padding:8px 14px 4px}.badge{display:inline-flex;align-items:center;justify-content:center;padding:1px 7px;border-radius:var(--radius-full);font-size:10px;font-weight:700}.badge-primary{background:var(--primary);color:#fff}.badge-success{background:#d1fae5;color:#065f46}.badge-danger{background:#fee2e2;color:#991b1b}.badge-admin{background:var(--primary);color:#fff;font-size:9px;padding:2px 6px;border-radius:var(--radius-sm);text-transform:uppercase;letter-spacing:.4px}.call-modal{position:fixed;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,#1a1f2e,#0d1117);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:9999;animation:fadeIn .3s ease;color:#fff}.call-avatar{width:100px;height:100px;border-radius:50%;margin-bottom:16px;box-shadow:0 0 0 6px #ffffff1f,0 0 0 14px #ffffff0a;position:relative}.call-pulse{position:absolute;top:-12px;right:-12px;bottom:-12px;left:-12px;border-radius:50%;border:2px solid rgba(255,255,255,.2);animation:ripple 1.8s ease-out infinite}.call-name{font-size:22px;font-weight:700;margin-bottom:6px}.call-status{font-size:14px;color:#fff9;margin-bottom:40px}.call-video-local{position:absolute;top:20px;right:20px;width:120px;height:180px;border-radius:var(--radius-lg);overflow:hidden;border:2px solid rgba(255,255,255,.2);background:#000;cursor:grab}.call-video-remote{width:100%;height:100%;object-fit:cover}.call-controls{display:flex;gap:16px;margin-top:20px}.call-btn{width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--transition);cursor:pointer;border:none;font-size:22px}.call-btn:hover{transform:scale(1.08)}.call-btn-end{background:#ef4444;color:#fff;box-shadow:0 4px 16px #ef444466}.call-btn-mute{background:#ffffff1f;color:#fff}.call-btn-mute.active{background:#ef44444d;color:#ef4444}.call-btn-video{background:#ffffff1f;color:#fff}.unread-badge{min-width:18px;height:18px;background:var(--primary);color:#fff;border-radius:var(--radius-full);font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 5px;flex-shrink:0}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;color:var(--text-muted);text-align:center;gap:10px}.empty-state svg{opacity:.3}.empty-state h3{font-size:14px;font-weight:600;color:var(--text-secondary);margin:0}.empty-state p{font-size:12px;color:var(--text-muted);margin:0;max-width:220px;line-height:1.6}.img-msg{max-width:240px;max-height:240px;object-fit:cover;border-radius:var(--radius);display:block;cursor:pointer;transition:transform .2s}.img-msg:hover{transform:scale(1.02)}.ctx-menu{position:fixed;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);z-index:5000;min-width:160px;padding:4px;animation:scaleIn .12s ease}.ctx-item{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;cursor:pointer;color:var(--text-primary);transition:background .15s}.ctx-item:hover{background:var(--surface2)}.ctx-item.danger{color:var(--danger)}.ctx-item.danger:hover{background:#fee2e2}.lightbox{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000eb;display:flex;align-items:center;justify-content:center;z-index:9999;animation:fadeIn .2s ease;cursor:zoom-out}.lightbox img{max-width:90vw;max-height:90vh;object-fit:contain;border-radius:var(--radius)}.settings-item{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);cursor:pointer;transition:var(--transition);text-align:left;width:100%}.settings-item:hover{border-color:var(--primary);background:var(--primary-light)}.settings-icon{width:36px;height:36px;border-radius:var(--radius-sm);background:var(--surface2);display:flex;align-items:center;justify-content:center;flex-shrink:0}@media (max-width: 767px){.sidebar-panel{width:100%!important;min-width:100%!important;position:absolute;left:0;top:0;bottom:0;z-index:10;display:flex}.chat-panel{position:absolute;top:0;right:0;bottom:0;left:0;z-index:20;display:none}.app-container.has-active-chat .sidebar-panel{display:none}.app-container.has-active-chat .chat-panel{display:flex}.emoji-picker{width:calc(100vw - 32px);left:16px}.msg-bubble{max-width:80%}}@media (min-width: 1200px){:root{--sidebar-width: 380px}}.toast-container{position:fixed;top:20px;right:20px;z-index:99999;display:flex;flex-direction:column;gap:8px;pointer-events:none}.toast{padding:12px 18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);font-size:13.5px;font-weight:500;display:flex;align-items:center;gap:10px;animation:slideInRight .25s ease,fadeIn .25s ease;pointer-events:all;max-width:320px}.toast.success{border-left:3px solid var(--accent)}.toast.error{border-left:3px solid var(--danger)}.toast.info{border-left:3px solid var(--primary)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.flex-1{flex:1}.min-w-0{min-width:0}.gap-2{gap:8px}.gap-3{gap:12px}.overflow-hidden{overflow:hidden}.text-ellipsis{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.font-bold{font-weight:700}.text-muted{color:var(--text-muted)}.text-sm{font-size:12px}.mt-auto{margin-top:auto}.w-full{width:100%}.p-4{padding:16px}.rounded-full{border-radius:var(--radius-full)}.auth-page{min-height:100dvh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#e8f4fd,#bde0f8 40%,#d1e8f5);padding:20px}[data-theme=dark] .auth-page{background:linear-gradient(135deg,#0a0f1a,#0d1b2e)}.auth-card{background:var(--surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);padding:36px 40px;width:100%;max-width:400px;animation:scaleIn .3s ease}@media (max-width: 480px){.auth-card{padding:28px 24px;border-radius:var(--radius-lg)}}