:root{--bg-primary:#0b1929;--bg-secondary:#111e30;--bg-tertiary:#162b4d;--bg-chat:#0d1f33;--bg-bubble-sent:#1b5e3b;--bg-bubble-received:#1e2d40;--bg-hover:#ffffff0d;--bg-active:#ffffff14;--text-primary:#e8edf3;--text-secondary:#89a;--text-muted:#567;--accent:#3b8ed9;--accent-hover:#4da0e8;--accent-light:#3b8ed926;--success:#2ecc71;--danger:#e74c3c;--warning:#f39c12;--border:#ffffff14;--shadow:0 2px 12px #0000004d;--radius-sm:8px;--radius-md:12px;--radius-lg:20px;--radius-full:50%;--font-display:"Nunito",sans-serif;--font-body:"DM Sans",sans-serif;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px)}*,:after,:before{box-sizing:border-box;margin:0;padding:0}#root,body,html{-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;background:#0b1929;background:var(--bg-primary);color:#e8edf3;color:var(--text-primary);font-family:DM Sans,sans-serif;font-family:var(--font-body);font-size:15px;height:100%;line-height:1.5;overflow:hidden;overscroll-behavior:none}button,input,select,textarea{background:none;border:none;color:inherit;font-family:inherit;font-size:inherit;outline:none}button{-webkit-appearance:none;cursor:pointer}a{color:#3b8ed9;color:var(--accent);text-decoration:none}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:#0000}::-webkit-scrollbar-thumb{background:#567;background:var(--text-muted);border-radius:2px}.app-container{display:flex;height:100%;margin:0 auto;max-width:1200px;overflow:hidden}.sidebar{background:#111e30;background:var(--bg-secondary);border-right:1px solid #ffffff14;border-right:1px solid var(--border);flex-direction:column;min-width:320px;width:380px}.main-panel,.sidebar{display:flex;height:100%}.main-panel{background:#0d1f33;background:var(--bg-chat);flex:1 1;flex-direction:column;position:relative}@media(max-width:768px){.sidebar{min-width:100%;width:100%}.main-panel.hidden,.sidebar.hidden{display:none}.main-panel{width:100%}}.header{align-items:center;background:#162b4d;background:var(--bg-tertiary);display:flex;flex-shrink:0;gap:12px;justify-content:space-between;padding:calc(env(safe-area-inset-top, 0px) + 12px) 16px 12px;padding:calc(var(--safe-top) + 12px) 16px 12px}.header h1{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,#3b8ed9,#2ecc71);-webkit-background-clip:text;background-clip:text;font-family:Nunito,sans-serif;font-family:var(--font-display);font-size:22px;font-weight:800}.header-actions{display:flex;gap:4px}.icon-btn{align-items:center;border-radius:50%;border-radius:var(--radius-full);color:#89a;color:var(--text-secondary);display:flex;font-size:18px;height:40px;justify-content:center;position:relative;transition:background .15s;width:40px}.icon-btn:active,.icon-btn:hover{background:#ffffff0d;background:var(--bg-hover)}.search-bar{flex-shrink:0;padding:8px 16px}.search-input{background:#0b1929;background:var(--bg-primary);border:1px solid #0000;border-radius:20px;border-radius:var(--radius-lg);color:#e8edf3;color:var(--text-primary);font-size:14px;padding:10px 16px 10px 40px;transition:border-color .2s;width:100%}.search-input:focus{border-color:#3b8ed9;border-color:var(--accent)}.search-wrapper{position:relative}.search-wrapper svg{color:#567;color:var(--text-muted);height:18px;left:12px;pointer-events:none;position:absolute;top:50%;transform:translateY(-50%);width:18px}.conversation-list{flex:1 1;overflow-y:auto}.conversation-item{align-items:center;border-bottom:1px solid #ffffff14;border-bottom:1px solid var(--border);cursor:pointer;display:flex;gap:12px;padding:12px 16px;transition:background .15s}.conversation-item:hover{background:#ffffff0d;background:var(--bg-hover)}.conversation-item.active{background:#ffffff14;background:var(--bg-active)}.avatar{align-items:center;border-radius:50%;border-radius:var(--radius-full);color:#fff;display:flex;flex-shrink:0;font-family:Nunito,sans-serif;font-family:var(--font-display);font-size:18px;font-weight:700;height:48px;justify-content:center;position:relative;width:48px}.avatar.sm{font-size:14px;height:36px;width:36px}.avatar.lg{font-size:24px;height:64px;width:64px}.avatar .online-dot{background:#2ecc71;background:var(--success);border:2px solid #111e30;border:2px solid var(--bg-secondary);border-radius:50%;border-radius:var(--radius-full);bottom:1px;height:12px;position:absolute;right:1px;width:12px}.conv-info{flex:1 1;min-width:0}.conv-name{font-size:15px;font-weight:600}.conv-name,.conv-preview{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-preview{color:#89a;color:var(--text-secondary);font-size:13px;margin-top:2px}.conv-meta{align-items:flex-end;display:flex;flex-direction:column;flex-shrink:0;gap:4px}.conv-time{color:#567;color:var(--text-muted);font-size:11px}.unread-badge{background:#3b8ed9;background:var(--accent);border-radius:10px;color:#fff;font-size:11px;font-weight:700;height:20px;justify-content:center;min-width:20px;padding:0 6px}.chat-header,.unread-badge{align-items:center;display:flex}.chat-header{background:#162b4d;background:var(--bg-tertiary);border-bottom:1px solid #ffffff14;border-bottom:1px solid var(--border);flex-shrink:0;gap:12px;padding:calc(env(safe-area-inset-top, 0px) + 10px) 16px 10px;padding:calc(var(--safe-top) + 10px) 16px 10px}.chat-header .back-btn{align-items:center;border-radius:50%;border-radius:var(--radius-full);color:#89a;color:var(--text-secondary);display:none;font-size:20px;height:36px;justify-content:center;width:36px}@media(max-width:768px){.chat-header .back-btn{display:flex}}.chat-header-info{flex:1 1;min-width:0}.chat-header-name{font-size:16px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-header-status{color:#89a;color:var(--text-secondary);font-size:12px}.chat-header-status.online{color:#2ecc71;color:var(--success)}.messages-area{flex:1 1;gap:4px;overflow-y:auto;padding:16px}.message-group,.messages-area{display:flex;flex-direction:column}.message-group{max-width:80%}.message-group.sent{align-self:flex-end}.message-group.received{align-self:flex-start}.message-bubble{word-wrap:break-word;animation:msgIn .2s ease-out;border-radius:12px;border-radius:var(--radius-md);line-height:1.45;overflow-wrap:break-word;padding:8px 12px}@keyframes msgIn{0%{opacity:0;transform:translateY(8px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.message-group.sent .message-bubble{background:#1b5e3b;background:var(--bg-bubble-sent);border-bottom-right-radius:4px}.message-group.received .message-bubble{background:#1e2d40;background:var(--bg-bubble-received);border-bottom-left-radius:4px}.message-sender{font-size:12px;font-weight:600;margin-bottom:2px}.message-text{font-size:14.5px}.message-time{color:#567;color:var(--text-muted);font-size:10.5px;margin-top:2px;text-align:right}.message-date-separator{padding:12px 0;text-align:center}.message-date-separator span{background:#162b4d;background:var(--bg-tertiary);border-radius:20px;border-radius:var(--radius-lg);color:#89a;color:var(--text-secondary);font-size:12px;font-weight:500;padding:4px 14px}.typing-indicator{align-items:center;color:#89a;color:var(--text-secondary);display:flex;font-size:13px;font-style:italic;gap:6px;padding:4px 12px}.typing-dots{display:flex;gap:3px}.typing-dots span{animation:typingBounce 1.2s infinite;background:#567;background:var(--text-muted);border-radius:50%;border-radius:var(--radius-full);height:6px;width:6px}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes typingBounce{0%,80%,to{transform:translateY(0)}40%{transform:translateY(-6px)}}.message-input-area{align-items:flex-end;background:#111e30;background:var(--bg-secondary);display:flex;flex-shrink:0;gap:8px;padding:8px 12px calc(env(safe-area-inset-bottom, 0px) + 8px);padding:8px 12px calc(var(--safe-bottom) + 8px)}.message-input-wrapper{align-items:flex-end;background:#0b1929;background:var(--bg-primary);border:1px solid #ffffff14;border:1px solid var(--border);border-radius:24px;display:flex;flex:1 1;max-height:120px;min-height:44px;padding:4px 12px;transition:border-color .2s}.message-input-wrapper:focus-within{border-color:#3b8ed9;border-color:var(--accent)}.message-input{background:none;border:none;color:#e8edf3;color:var(--text-primary);flex:1 1;font-size:15px;line-height:1.4;max-height:100px;padding:8px 0;resize:none}.message-input::placeholder{color:#567;color:var(--text-muted)}.emoji-btn{align-items:center;border-radius:50%;border-radius:var(--radius-full);display:flex;flex-shrink:0;font-size:22px;height:36px;justify-content:center;transition:background .15s;width:36px}.emoji-btn:hover{background:#ffffff0d;background:var(--bg-hover)}.send-btn{align-items:center;background:#3b8ed9;background:var(--accent);border-radius:50%;border-radius:var(--radius-full);color:#fff;display:flex;flex-shrink:0;font-size:20px;height:44px;justify-content:center;transition:all .15s;width:44px}.send-btn:hover{background:#4da0e8;background:var(--accent-hover)}.send-btn:active{transform:scale(.95)}.send-btn:disabled{cursor:default;opacity:.4}.emoji-picker{background:#111e30;background:var(--bg-secondary);border:1px solid #ffffff14;border:1px solid var(--border);border-radius:12px;border-radius:var(--radius-md);bottom:100%;box-shadow:0 2px 12px #0000004d;box-shadow:var(--shadow);left:12px;max-height:280px;overflow-y:auto;padding:12px;position:absolute;right:12px;z-index:10}.emoji-picker-grid{grid-gap:4px;display:grid;gap:4px;grid-template-columns:repeat(8,1fr)}.emoji-picker-grid button{align-items:center;aspect-ratio:1;border-radius:8px;border-radius:var(--radius-sm);display:flex;font-size:24px;justify-content:center;transition:background .15s;width:100%}.emoji-picker-grid button:hover{background:#ffffff0d;background:var(--bg-hover)}.call-overlay{animation:fadeIn .3s;background:#0a0e17;display:flex;flex-direction:column;inset:0;position:fixed;z-index:100}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.call-center{flex:1 1;flex-direction:column;gap:16px;padding:32px}.call-avatar,.call-center{align-items:center;display:flex;justify-content:center}.call-avatar{border-radius:50%;border-radius:var(--radius-full);color:#fff;font-family:Nunito,sans-serif;font-family:var(--font-display);font-size:48px;font-weight:700;height:120px;width:120px}.call-avatar.ringing{animation:callPulse 2s ease-in-out infinite}@keyframes callPulse{0%,to{box-shadow:0 0 0 0 #3b8ed966}50%{box-shadow:0 0 0 30px #3b8ed900}}.call-name{color:#fff;font-family:Nunito,sans-serif;font-family:var(--font-display);font-size:28px;font-weight:700}.call-status-text{color:#89a;color:var(--text-secondary);font-size:16px;margin-bottom:32px}.call-actions{display:flex;gap:32px}.call-action-btn{align-items:center;border-radius:50%;border-radius:var(--radius-full);color:#fff;display:flex;height:64px;justify-content:center;transition:transform .15s;width:64px}.call-action-btn:active{transform:scale(.9)}.call-action-btn.accept{background:#2ecc71;background:var(--success)}.call-action-btn.decline{background:#e74c3c;background:var(--danger)}.call-header-bar{align-items:center;background:#00000080;display:flex;flex-shrink:0;padding:calc(env(safe-area-inset-top, 0px) + 8px) 16px 8px;padding:calc(var(--safe-top) + 8px) 16px 8px;z-index:2}.call-header-info{display:flex;flex:1 1;flex-direction:column;gap:2px}.call-header-name{color:#fff;font-size:15px;font-weight:600}.call-header-dur{color:#89a;color:var(--text-secondary);font-size:12px}.call-grid{grid-gap:4px;background:#0a0e17;display:grid;flex:1 1;gap:4px;overflow:hidden;padding:4px}.call-tile{align-items:center;background:#111922;display:flex;justify-content:center;min-height:120px;overflow:hidden;position:relative}.call-tile,.call-video{border-radius:12px;border-radius:var(--radius-md)}.call-video{height:100%;object-fit:cover;width:100%}.call-tile-avatar{align-items:center;border-radius:50%;border-radius:var(--radius-full);color:#fff;display:flex;font-family:Nunito,sans-serif;font-family:var(--font-display);font-size:32px;font-weight:700;height:80px;justify-content:center;width:80px}.call-tile-label{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0009;border-radius:8px;border-radius:var(--radius-sm);bottom:8px;color:#fff;font-size:12px;font-weight:500;left:8px;padding:4px 10px;position:absolute}.call-controls{background:#00000080;flex-shrink:0;gap:16px;justify-content:center;padding:16px 20px calc(env(safe-area-inset-bottom, 0px) + 16px);padding:16px 20px calc(var(--safe-bottom) + 16px);z-index:2}.call-controls,.call-ctrl-btn{align-items:center;display:flex}.call-ctrl-btn{background:#ffffff1a;border-radius:12px;border-radius:var(--radius-md);color:#fff;flex-direction:column;gap:4px;padding:12px 16px;transition:all .15s}.call-ctrl-btn:hover{background:#ffffff26}.call-ctrl-btn:active{transform:scale(.95)}.call-ctrl-btn.off{background:#ffffff40;color:#f39c12;color:var(--warning)}.call-ctrl-btn.end{background:#e74c3c;background:var(--danger)}.call-ctrl-btn.end:hover{background:#c0392b}.call-ctrl-label{font-size:11px;font-weight:500}.auth-screen{align-items:center;background:linear-gradient(135deg,#0b1929,#0d2137);background:linear-gradient(135deg,var(--bg-primary),#0d2137);display:flex;flex-direction:column;justify-content:center;min-height:100%;padding:24px}.auth-card{background:#111e30;background:var(--bg-secondary);border:1px solid #ffffff14;border:1px solid var(--border);border-radius:20px;border-radius:var(--radius-lg);box-shadow:0 2px 12px #0000004d;box-shadow:var(--shadow);max-width:400px;padding:32px 28px;width:100%}.auth-logo{margin-bottom:24px;text-align:center}.auth-logo-icon{font-size:56px;margin-bottom:8px}.auth-logo h1{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,#3b8ed9,#2ecc71);-webkit-background-clip:text;background-clip:text;font-family:Nunito,sans-serif;font-family:var(--font-display);font-size:28px;font-weight:800}.auth-logo p{color:#89a;color:var(--text-secondary);font-size:14px;margin-top:4px}.form-group{margin-bottom:16px}.form-label{color:#89a;color:var(--text-secondary);display:block;font-size:13px;font-weight:500;margin-bottom:6px}.form-input{background:#0b1929;background:var(--bg-primary);border:1px solid #ffffff14;border:1px solid var(--border);border-radius:12px;border-radius:var(--radius-md);color:#e8edf3;color:var(--text-primary);font-size:15px;padding:12px 14px;transition:border-color .2s;width:100%}.form-input:focus{border-color:#3b8ed9;border-color:var(--accent)}.form-input::placeholder{color:#567;color:var(--text-muted)}.btn{align-items:center;border-radius:12px;border-radius:var(--radius-md);cursor:pointer;display:flex;font-size:15px;font-weight:600;gap:8px;justify-content:center;padding:12px 20px;transition:all .15s;width:100%}.btn-primary{background:#3b8ed9;background:var(--accent);color:#fff}.btn-primary:hover{background:#4da0e8;background:var(--accent-hover)}.btn-primary:disabled{cursor:default;opacity:.5}.btn-secondary{background:#0b1929;background:var(--bg-primary);border:1px solid #ffffff14;border:1px solid var(--border);color:#e8edf3;color:var(--text-primary)}.btn-secondary:hover{background:#ffffff0d;background:var(--bg-hover)}.btn-danger{background:#e74c3c;background:var(--danger);color:#fff}.auth-switch{color:#89a;color:var(--text-secondary);font-size:14px;margin-top:16px;text-align:center}.auth-switch button{color:#3b8ed9;color:var(--accent);font-weight:600}.error-text{color:#e74c3c;color:var(--danger);font-size:13px;margin-top:8px;text-align:center}.settings-panel{animation:slideIn .2s ease-out;background:#0b1929;background:var(--bg-primary);display:flex;flex-direction:column;inset:0;position:fixed;z-index:50}@keyframes slideIn{0%{transform:translateX(100%)}to{transform:translateX(0)}}.settings-header{align-items:center;background:#162b4d;background:var(--bg-tertiary);display:flex;flex-shrink:0;gap:12px;padding:calc(env(safe-area-inset-top, 0px) + 12px) 16px 12px;padding:calc(var(--safe-top) + 12px) 16px 12px}.settings-header h2{font-family:Nunito,sans-serif;font-family:var(--font-display);font-size:18px;font-weight:700}.settings-content{flex:1 1;overflow-y:auto;padding:16px}.settings-section{margin-bottom:24px}.settings-section h3{color:#3b8ed9;color:var(--accent);font-family:Nunito,sans-serif;font-family:var(--font-display);font-size:14px;font-weight:700;letter-spacing:.05em;margin-bottom:12px;text-transform:uppercase}.settings-item{align-items:center;background:#111e30;background:var(--bg-secondary);border-radius:12px;border-radius:var(--radius-md);display:flex;justify-content:space-between;margin-bottom:8px;padding:12px 16px}.settings-item-label{font-weight:500}.settings-item-value{color:#89a;color:var(--text-secondary);font-size:14px}.invite-code-display{background:#0b1929;background:var(--bg-primary);border:2px dashed #3b8ed9;border:2px dashed var(--accent);border-radius:12px;border-radius:var(--radius-md);margin-top:12px;padding:20px;text-align:center}.invite-code{color:#3b8ed9;color:var(--accent);font-family:Courier New,monospace;font-size:32px;font-weight:700;letter-spacing:4px}.invite-code-exp{font-size:13px;margin-top:8px}.invite-code-exp,.user-role{color:#567;color:var(--text-muted)}.user-role{background:#0b1929;background:var(--bg-primary);border-radius:8px;border-radius:var(--radius-sm);font-size:12px;padding:2px 8px}.modal-overlay{align-items:center;animation:fadeIn .2s;background:#0009;display:flex;inset:0;justify-content:center;padding:24px;position:fixed;z-index:60}.modal{background:#111e30;background:var(--bg-secondary);border:1px solid #ffffff14;border:1px solid var(--border);border-radius:20px;border-radius:var(--radius-lg);max-height:80vh;max-width:420px;overflow-y:auto;padding:24px;width:100%}.modal h2{font-family:Nunito,sans-serif;font-family:var(--font-display);font-size:20px;font-weight:700;margin-bottom:16px}.user-list-item{align-items:center;border-bottom:1px solid #ffffff14;border-bottom:1px solid var(--border);cursor:pointer;display:flex;gap:12px;padding:10px 0;transition:opacity .15s}.user-list-item:hover{opacity:.8}.user-name{flex:1 1;font-weight:500}.checkbox{align-items:center;border:2px solid #567;border:2px solid var(--text-muted);border-radius:6px;display:flex;flex-shrink:0;height:22px;justify-content:center;transition:all .15s;width:22px}.checkbox.checked{border-color:#3b8ed9;border-color:var(--accent)}.checkbox.checked,.fab{background:#3b8ed9;background:var(--accent)}.fab{align-items:center;border-radius:50%;border-radius:var(--radius-full);bottom:calc(env(safe-area-inset-bottom, 0px) + 80px);bottom:calc(var(--safe-bottom) + 80px);box-shadow:0 4px 16px #3b8ed966;color:#fff;display:flex;font-size:28px;height:56px;justify-content:center;position:absolute;right:20px;transition:transform .15s;width:56px;z-index:5}.fab:hover{transform:scale(1.05)}.fab:active{transform:scale(.95)}.empty-state{align-items:center;display:flex;flex:1 1;flex-direction:column;justify-content:center;padding:32px;text-align:center}.empty-state-icon{font-size:64px;margin-bottom:16px}.empty-state h2{font-family:Nunito,sans-serif;font-family:var(--font-display);font-size:20px;font-weight:700;margin-bottom:8px}.empty-state p{color:#89a;color:var(--text-secondary);font-size:14px;max-width:300px}.loading-spinner{animation:spin .8s linear infinite;border:3px solid #ffffff14;border-top-color:#3b8ed9;border:3px solid var(--border);border-radius:50%;border-radius:var(--radius-full);border-top-color:var(--accent);height:24px;width:24px}@keyframes spin{to{transform:rotate(1turn)}}.toast{animation:toastIn .3s ease-out;background:#162b4d;background:var(--bg-tertiary);border:1px solid #ffffff14;border:1px solid var(--border);border-radius:20px;border-radius:var(--radius-lg);box-shadow:0 2px 12px #0000004d;box-shadow:var(--shadow);font-size:14px;font-weight:500;left:50%;padding:12px 24px;position:fixed;top:calc(env(safe-area-inset-top, 0px) + 16px);top:calc(var(--safe-top) + 16px);transform:translateX(-50%);z-index:200}@keyframes toastIn{0%{opacity:0;transform:translate(-50%,-20px)}to{opacity:1;transform:translate(-50%)}}