:root{color-scheme:light dark;--bg-primary: #f5f5f5;--bg-secondary: #fff;--bg-tertiary: #f8f8f8;--bg-hover: #f0f0f0;--bg-active: #e8e8e8;--bg-input: #fff;--bg-canvas: #fff;--text-primary: #333;--text-secondary: #555;--text-tertiary: #666;--text-muted: #9e9e9e;--border-primary: #e0e0e0;--border-secondary: #ddd;--border-tertiary: #d0d0d0;--accent-primary: #007bff;--accent-primary-hover: #0056b3;--accent-secondary: #2196f3;--success: #28a745;--success-bg: #d4edda;--success-text: #155724;--warning: #ffc107;--warning-bg: #fff3cd;--warning-text: #856404;--danger: #dc3545;--danger-bg: #f8d7da;--danger-text: #721c24;--info: #17a2b8;--info-bg: #d1ecf1;--info-text: #0c5460;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .1);--shadow-md: 0 4px 12px rgba(0, 0, 0, .15);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .2);--code-bg: #f8f8f8;--code-line-number: #888;--msg-other-bg: #f5f5f5;--msg-self-bg: #e3f2fd;--msg-self-border: #2196f3;--host-badge: #f59e0b}:root.dark-theme,:root[data-theme=dark]{--bg-primary: #1a1a1a;--bg-secondary: #242424;--bg-tertiary: #2d2d2d;--bg-hover: #333;--bg-active: #404040;--bg-input: #2d2d2d;--bg-canvas: #1e1e1e;--text-primary: #e0e0e0;--text-secondary: #b0b0b0;--text-tertiary: #888;--text-muted: #666;--border-primary: #404040;--border-secondary: #333;--border-tertiary: #444;--accent-primary: #4da6ff;--accent-primary-hover: #66b3ff;--accent-secondary: #64b5f6;--success: #4caf50;--success-bg: #1b3a1f;--success-text: #81c784;--warning: #ffb300;--warning-bg: #3d3015;--warning-text: #ffcc80;--danger: #ef5350;--danger-bg: #3d1f1f;--danger-text: #ef9a9a;--info: #29b6f6;--info-bg: #1a3a4a;--info-text: #81d4fa;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--code-bg: #1e1e1e;--code-line-number: #666;--msg-other-bg: #2d2d2d;--msg-self-bg: #1a3a4a;--msg-self-border: #64b5f6;--host-badge: #fbbf24}:root.dark-theme ::selection,:root[data-theme=dark] ::selection{background:#264f78;color:#fff}:root.dark-theme ::-moz-selection,:root[data-theme=dark] ::-moz-selection{background:#264f78;color:#fff}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) ::selection{background:#264f78;color:#fff}:root:not([data-theme=light]) ::-moz-selection{background:#264f78;color:#fff}}:root.dark-theme code[class*=language-],:root.dark-theme pre[class*=language-],:root[data-theme=dark] code[class*=language-],:root[data-theme=dark] pre[class*=language-]{color:#f0f0f0!important;background:none!important;text-shadow:none!important}:root.dark-theme .token,:root[data-theme=dark] .token{color:#f0f0f0}:root.dark-theme .token.comment,:root.dark-theme .token.prolog,:root.dark-theme .token.doctype,:root.dark-theme .token.cdata,:root[data-theme=dark] .token.comment,:root[data-theme=dark] .token.prolog,:root[data-theme=dark] .token.doctype,:root[data-theme=dark] .token.cdata{color:#7ec699!important}:root.dark-theme .token.punctuation,:root[data-theme=dark] .token.punctuation{color:#e0e0e0!important}:root.dark-theme .token.property,:root.dark-theme .token.tag,:root.dark-theme .token.boolean,:root.dark-theme .token.number,:root.dark-theme .token.constant,:root.dark-theme .token.symbol,:root[data-theme=dark] .token.property,:root[data-theme=dark] .token.tag,:root[data-theme=dark] .token.boolean,:root[data-theme=dark] .token.number,:root[data-theme=dark] .token.constant,:root[data-theme=dark] .token.symbol{color:#c8e6a0!important}:root.dark-theme .token.selector,:root.dark-theme .token.attr-name,:root.dark-theme .token.string,:root.dark-theme .token.char,:root.dark-theme .token.builtin,:root[data-theme=dark] .token.selector,:root[data-theme=dark] .token.attr-name,:root[data-theme=dark] .token.string,:root[data-theme=dark] .token.char,:root[data-theme=dark] .token.builtin{color:#e6b089!important}:root.dark-theme .token.operator,:root.dark-theme .token.entity,:root.dark-theme .token.url,:root[data-theme=dark] .token.operator,:root[data-theme=dark] .token.entity,:root[data-theme=dark] .token.url{color:#e0e0e0!important}:root.dark-theme .token.atrule,:root.dark-theme .token.attr-value,:root.dark-theme .token.keyword,:root[data-theme=dark] .token.atrule,:root[data-theme=dark] .token.attr-value,:root[data-theme=dark] .token.keyword{color:#6bb3f0!important}:root.dark-theme .token.function,:root.dark-theme .token.class-name,:root[data-theme=dark] .token.function,:root[data-theme=dark] .token.class-name{color:#e6d396!important}:root.dark-theme .token.regex,:root.dark-theme .token.important,:root.dark-theme .token.variable,:root[data-theme=dark] .token.regex,:root[data-theme=dark] .token.important,:root[data-theme=dark] .token.variable{color:#e07070!important}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) code[class*=language-],:root:not([data-theme=light]) pre[class*=language-]{color:#f0f0f0!important;background:none!important;text-shadow:none!important}:root:not([data-theme=light]) .token{color:#f0f0f0}:root:not([data-theme=light]) .token.comment,:root:not([data-theme=light]) .token.prolog,:root:not([data-theme=light]) .token.doctype,:root:not([data-theme=light]) .token.cdata{color:#7ec699!important}:root:not([data-theme=light]) .token.punctuation{color:#e0e0e0!important}:root:not([data-theme=light]) .token.property,:root:not([data-theme=light]) .token.tag,:root:not([data-theme=light]) .token.boolean,:root:not([data-theme=light]) .token.number,:root:not([data-theme=light]) .token.constant,:root:not([data-theme=light]) .token.symbol{color:#c8e6a0!important}:root:not([data-theme=light]) .token.selector,:root:not([data-theme=light]) .token.attr-name,:root:not([data-theme=light]) .token.string,:root:not([data-theme=light]) .token.char,:root:not([data-theme=light]) .token.builtin{color:#e6b089!important}:root:not([data-theme=light]) .token.operator,:root:not([data-theme=light]) .token.entity,:root:not([data-theme=light]) .token.url{color:#e0e0e0!important}:root:not([data-theme=light]) .token.atrule,:root:not([data-theme=light]) .token.attr-value,:root:not([data-theme=light]) .token.keyword{color:#6bb3f0!important}:root:not([data-theme=light]) .token.function,:root:not([data-theme=light]) .token.class-name{color:#e6d396!important}:root:not([data-theme=light]) .token.regex,:root:not([data-theme=light]) .token.important,:root:not([data-theme=light]) .token.variable{color:#e07070!important}}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg-primary: #1a1a1a;--bg-secondary: #242424;--bg-tertiary: #2d2d2d;--bg-hover: #333;--bg-active: #404040;--bg-input: #2d2d2d;--bg-canvas: #1e1e1e;--text-primary: #e0e0e0;--text-secondary: #b0b0b0;--text-tertiary: #888;--text-muted: #666;--border-primary: #404040;--border-secondary: #333;--border-tertiary: #444;--accent-primary: #4da6ff;--accent-primary-hover: #66b3ff;--accent-secondary: #64b5f6;--success: #4caf50;--success-bg: #1b3a1f;--success-text: #81c784;--warning: #ffb300;--warning-bg: #3d3015;--warning-text: #ffcc80;--danger: #ef5350;--danger-bg: #3d1f1f;--danger-text: #ef9a9a;--info: #29b6f6;--info-bg: #1a3a4a;--info-text: #81d4fa;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--code-bg: #1e1e1e;--code-line-number: #666;--msg-other-bg: #2d2d2d;--msg-self-bg: #1a3a4a;--msg-self-border: #64b5f6;--host-badge: #fbbf24}}*{margin:0;padding:0;box-sizing:border-box}html{-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%}html,body{height:100%;height:100dvh;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none}#app{display:flex;flex-direction:column;height:100vh;height:100dvh;width:100vw;overflow:hidden}.content-hidden{visibility:hidden;pointer-events:none}header{background-color:var(--bg-secondary);padding:8px 16px;border-bottom:1px solid var(--border-primary);box-shadow:var(--shadow-sm);display:flex;justify-content:space-between;align-items:center;flex-wrap:nowrap;gap:12px;flex-shrink:0;z-index:100;min-height:48px;position:relative}main{flex:1;display:flex;flex-direction:column;overflow:hidden;padding:12px;gap:12px;min-height:0}header h1{font-size:20px;font-weight:600;white-space:nowrap}.header-left{display:flex;align-items:baseline;gap:8px;flex-shrink:0}.app-version{font-size:12px;color:var(--text-muted);font-weight:400}.header-right{display:flex;align-items:center;gap:8px;flex-shrink:0}.clickable-title{cursor:pointer;-webkit-user-select:none;user-select:none;transition:color .2s}.clickable-title:hover{color:var(--accent-primary)}.debug-info-panel{position:absolute;top:100%;left:0;right:0;background-color:var(--bg-tertiary);border-bottom:1px solid var(--border-primary);padding:8px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;z-index:99;box-shadow:0 2px 4px #0000001a;animation:slideDown .2s ease-out}.debug-info-panel.hidden{display:none}.close-debug-btn{width:24px;height:24px;min-width:24px;padding:0;background:transparent;border:none;font-size:18px;color:var(--text-tertiary);cursor:pointer;display:flex;align-items:center;justify-content:center;border-radius:4px}.close-debug-btn:hover{background-color:var(--border-primary);color:var(--text-primary)}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.icon-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;background-color:var(--bg-hover);border:1px solid var(--border-secondary);border-radius:6px;cursor:pointer;transition:all .2s;color:var(--text-secondary)}.icon-btn:hover{background-color:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.icon-btn:active{transform:scale(.95)}.icon-btn svg{flex-shrink:0}#sessionInfoContainer{display:none}#sessionInfo{font-size:13px;color:var(--text-tertiary);background-color:var(--bg-hover);padding:6px 12px;border-radius:4px;font-family:Monaco,Menlo,Ubuntu Mono,Consolas,monospace}#headerControls{display:none}.control-group{display:flex;align-items:center;gap:8px}.control-group label{font-size:14px;font-weight:500;color:var(--text-secondary)}.control-group select{padding:8px 12px;border:1px solid var(--border-secondary);border-radius:4px;background-color:var(--bg-secondary);font-size:14px;cursor:pointer;transition:border-color .2s}.control-group select:hover{border-color:var(--accent-primary)}.control-group select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #007bff1a}.role-badge{display:inline-block;padding:6px 12px;border-radius:16px;font-size:14px;font-weight:600;text-transform:capitalize}.role-badge.role-interviewer{background-color:var(--msg-self-bg);color:var(--accent-secondary);border:1px solid var(--msg-self-border)}.role-badge.role-candidate{background-color:var(--warning-bg);color:var(--warning);border:1px solid var(--warning)}button{padding:10px 20px;background-color:var(--accent-primary);color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:14px;font-weight:500;transition:background-color .2s}button:hover{background-color:var(--accent-primary-hover)}button:disabled{background-color:var(--border-primary);cursor:not-allowed}#contentWrapper{display:flex;flex:1;min-height:0;overflow:hidden;gap:16px}#mainLayout{display:flex;flex-direction:column;flex:1;min-height:0;overflow:hidden}.messages-panel.desktop-panel{position:relative;width:350px;min-width:350px;max-width:350px;flex:0 0 350px;height:auto;max-height:none;border-radius:0;box-shadow:-2px 0 8px #0000001a;transform:none;transition:flex-basis .3s ease,width .3s ease,min-width .3s ease,max-width .3s ease,opacity .3s ease}.messages-panel.desktop-panel.collapsed{width:0;min-width:0;max-width:0;flex:0 0 0;opacity:0;overflow:hidden;padding:0}#tabGroup{display:flex;flex-direction:column;flex:1;min-height:0}#tabBarWrapper{display:flex;align-items:flex-end;flex-shrink:0;position:relative;border-bottom:1px solid var(--border-tertiary)}#tabBar{display:inline-flex;gap:0;background-color:transparent;padding:0;flex-shrink:0;position:relative;z-index:1;margin-bottom:-1px}.tab-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 24px;background-color:var(--bg-active);color:var(--text-tertiary);border:1px solid var(--border-tertiary);border-bottom:1px solid var(--border-tertiary);border-radius:8px 8px 0 0;cursor:pointer;font-size:14px;font-weight:500;transition:all .15s ease;position:relative;margin-right:-1px}.tab-btn:hover:not(.active){color:var(--text-primary);background-color:var(--bg-hover)}.tab-btn.active{background-color:var(--bg-secondary);color:var(--text-primary);font-weight:600;border-bottom-color:var(--bg-secondary);z-index:2}.header-left .sync-indicator{align-self:center;padding:0;background:transparent}.header-left .sync-indicator .sync-dot{width:8px;height:8px}.session-timer{align-self:center;padding:3px 8px;font-size:13px;font-weight:500;color:var(--text-secondary);background-color:var(--bg-tertiary);border-radius:4px;font-family:SF Mono,Monaco,Cascadia Code,monospace;letter-spacing:.5px}.connection-status{display:inline-flex;align-items:center;gap:6px;align-self:center;padding:3px 8px;font-size:12px;font-weight:500;background-color:var(--bg-tertiary);border-radius:4px;font-family:SF Mono,Monaco,Cascadia Code,monospace}.connection-status .conn-mode{padding:1px 6px;border-radius:3px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.connection-status .conn-mode.p2p{background-color:var(--success-bg);color:var(--success)}.connection-status .conn-mode.relay{background-color:var(--warning-bg);color:var(--warning-text)}.connection-status .conn-mode.host{background-color:var(--info-bg);color:var(--info-text)}.connection-status .conn-mode.guest{background-color:var(--success-bg);color:var(--success)}.connection-status .conn-mode.offline{background-color:var(--bg-active);color:var(--text-muted)}.connection-status .conn-latency{color:var(--text-secondary)}.connection-status .conn-latency.low{color:var(--success)}.connection-status .conn-latency.medium{color:var(--warning-text)}.connection-status .conn-latency.high{color:var(--danger)}.connection-status .conn-latency.host-label{color:var(--primary);font-weight:500}.participant-count{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}#tabContent{flex:1;display:flex;flex-direction:column;min-height:0;overflow:hidden;background-color:var(--bg-secondary);border:1px solid var(--border-tertiary);border-top:none}#codeCanvas,#diagramCanvas{display:none;background-color:var(--bg-secondary);padding:12px;flex:1;flex-direction:column;min-height:0;overflow:hidden;position:relative}#codeCanvas.active,#diagramCanvas.active{display:flex}#codeCanvas h2,#diagramCanvas h2{font-size:18px;font-weight:600;margin-bottom:15px;color:var(--text-primary)}#languageSelector{display:flex;align-items:center;margin-left:auto;margin-bottom:4px}#languageSelector select{padding:6px 10px;border:1px solid var(--border-tertiary);border-radius:4px;background-color:var(--bg-secondary);color:var(--text-primary);font-size:13px;cursor:pointer;transition:border-color .2s}#languageSelector select:hover{border-color:var(--accent-primary)}#languageSelector select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 2px #007bff1a}#languageSelector select option{background-color:var(--bg-secondary);color:var(--text-primary)}#languageSelector.hidden{display:none}#codeEditorWrapper{flex:1;position:relative;overflow:visible;border-radius:4px;min-height:0}.remote-cursor{transition:top .05s linear,left .05s linear}.remote-cursor-label{pointer-events:none;-webkit-user-select:none;user-select:none}#remoteCursor{position:absolute;width:2px;background-color:#f009;pointer-events:none;z-index:1000;transition:all .1s ease}#remoteCursor span{position:absolute;top:-20px;left:0;font-size:11px;background-color:#f00c;color:#fff;padding:2px 5px;border-radius:3px;white-space:nowrap}#codeInput,#codeHighlight{margin:0;padding:12px;border:none;width:100%;height:100%;font-family:Monaco,Menlo,Ubuntu Mono,Consolas,monospace;font-size:14px;line-height:1.5;white-space:pre;overflow:auto;box-sizing:border-box;border-radius:4px}#codeInput{position:absolute;top:0;left:0;z-index:1;color:transparent;background-color:transparent;caret-color:var(--text-primary);resize:none;outline:none}#codeHighlight{position:relative;z-index:0;background-color:var(--bg-tertiary);color:var(--text-primary);pointer-events:none}#codeHighlight code,#codeOutput{color:var(--text-primary)}#codeOutput{font-family:inherit;font-size:inherit;line-height:inherit}:root[data-theme=dark] #codeOutput,:root[data-theme=dark] #codeHighlight code{color:#f0f0f0!important}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) #codeOutput,:root:not([data-theme=light]) #codeHighlight code{color:#f0f0f0!important}}#diagramControls{display:flex;flex-wrap:nowrap;align-items:center;gap:8px;margin-bottom:12px;padding:8px 12px;background-color:var(--bg-tertiary);border-radius:8px;border:1px solid var(--border-primary);overflow-x:auto}.tool-btn-icon{width:36px;height:36px;min-width:36px;min-height:36px;padding:0;background-color:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:6px;cursor:pointer;font-size:12px;font-weight:600;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;transition:all .15s ease}.tool-btn-icon svg{stroke:var(--text-secondary)}.tool-btn-icon:hover{background-color:var(--bg-primary);border-color:var(--accent-primary)}.tool-btn-icon:hover svg{stroke:var(--accent-primary)}.tool-btn-icon.active{background-color:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.tool-btn-icon.active svg{stroke:#fff}.tool-btn-icon:disabled,.tool-btn-icon:disabled:hover{opacity:.5;cursor:not-allowed;background-color:var(--bg-secondary);border-color:var(--border-primary)}.tool-btn-icon:disabled svg,.tool-btn-icon:disabled:hover svg{stroke:var(--text-secondary)}.tool-divider{width:1px;height:24px;background-color:var(--border-secondary);margin:0 4px;flex-shrink:0}#colorPicker{width:36px;height:36px;min-width:36px;padding:2px;border:1px solid var(--border-secondary);border-radius:6px;cursor:pointer;background-color:var(--bg-tertiary);-webkit-appearance:none;-moz-appearance:none;appearance:none}#colorPicker::-webkit-color-swatch-wrapper{padding:2px}#colorPicker::-webkit-color-swatch{border:none;border-radius:4px}#colorPicker::-moz-color-swatch{border:none;border-radius:4px}.size-control-wrapper{display:flex;align-items:center;gap:4px;position:relative}.size-slider{width:80px;height:36px;margin:0}.size-slider.hidden{display:none}.size-value{font-size:12px;color:var(--text-secondary);min-width:16px;text-align:center}.tool-group,.tool-group label,.tool-btn{display:none}#brushSizeValue{font-size:12px;color:var(--text-secondary);min-width:16px}#diagramArea{flex:1;width:100%;min-height:0;border:1px solid var(--border-primary);border-radius:4px;background-color:var(--bg-canvas);cursor:crosshair;touch-action:none}.text-input-overlay{position:absolute;z-index:100}.text-input-overlay input{font-family:sans-serif;font-size:16px;padding:4px 8px;border:2px solid var(--accent-primary);border-radius:4px;background-color:var(--bg-primary);color:var(--text-primary);outline:none;min-width:100px;max-width:300px}.text-input-overlay input:focus{box-shadow:0 0 0 2px #007bff4d}.messages-fab{position:fixed;bottom:calc(24px + env(safe-area-inset-bottom,0px));right:calc(24px + env(safe-area-inset-right,0px));width:56px;height:56px;border-radius:50%;background-color:var(--accent-primary);color:#fff;border:none;box-shadow:0 4px 12px #007bff66;cursor:pointer;display:none;align-items:center;justify-content:center;z-index:1000;transition:transform .2s,box-shadow .2s,background-color .2s}.messages-fab:hover{background-color:var(--accent-primary-hover);transform:scale(1.05);box-shadow:0 6px 16px #007bff80}.messages-fab:active{transform:scale(.95)}.messages-fab svg{flex-shrink:0}.unread-badge{position:absolute;top:-4px;right:-4px;min-width:20px;height:20px;padding:0 6px;border-radius:10px;background-color:var(--danger);color:#fff;font-size:11px;font-weight:600;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 4px #0003;border:2px solid white}.unread-badge[hidden]{display:none}.unread-badge.pulse{animation:badge-pulse .3s ease-out}@keyframes badge-pulse{0%{transform:scale(1)}50%{transform:scale(1.3)}to{transform:scale(1)}}.messages-overlay{display:none}.messages-overlay.open{opacity:1;visibility:visible}.messages-panel{position:fixed;bottom:0;right:0;width:400px;max-width:100%;height:60vh;max-height:500px;background-color:var(--bg-secondary);border-radius:16px 16px 0 0;box-shadow:0 -4px 20px #00000026;display:flex;flex-direction:column;overflow:hidden;transform:translateY(100%);transition:transform .3s ease-out;padding-bottom:env(safe-area-inset-bottom,0px)}.messages-overlay.open .messages-panel{transform:translateY(0)}.messages-header{display:flex;justify-content:space-between;align-items:center;padding:16px;border-bottom:1px solid var(--border-primary);flex-shrink:0}.messages-header h2{font-size:18px;font-weight:600;color:var(--text-primary);margin:0}.close-messages-btn{width:36px;height:36px;padding:0;background-color:var(--bg-hover);border:none;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:all .2s}.close-messages-btn:hover{background-color:var(--border-primary);color:var(--text-primary)}#messagesBlock{background-color:var(--bg-secondary);padding:0;flex:1;display:flex;flex-direction:column;overflow:hidden}#messagesList{flex:1;min-height:0;overflow-y:auto;padding:12px;background-color:var(--bg-tertiary);display:flex;flex-direction:column;gap:8px}.message{padding:10px;border-radius:6px;max-width:80%;word-wrap:break-word}.message-other{align-self:flex-start;background-color:var(--bg-primary);border-left:3px solid var(--text-muted)}.message-self{align-self:flex-end;background-color:var(--msg-self-bg);border-right:3px solid var(--msg-self-border);border-left:none}.message-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;font-size:12px}.message-role{font-weight:600}.message-other .message-role{color:var(--text-tertiary)}.message-self .message-role{color:var(--accent-secondary)}.message-timestamp{color:var(--text-tertiary);font-size:11px}.message-text{font-size:14px;line-height:1.4;color:var(--text-primary)}.message-footer{display:flex;justify-content:flex-end;margin-top:4px}.message-status{color:var(--text-muted);display:flex;align-items:center}.message-self .message-status{color:var(--accent-secondary)}.messages-empty{text-align:center;color:var(--text-muted);padding:24px 16px;font-size:13px}#messageInput{display:flex;gap:8px;flex-shrink:0;padding:12px;border-top:1px solid var(--border-primary);background-color:var(--bg-secondary)}#messageText{flex:1;padding:10px;border:1px solid var(--border-secondary);border-radius:4px;font-size:14px;font-family:inherit;background-color:var(--bg-secondary);color:var(--text-primary)}#messageText:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #007bff1a}#sendMessageBtn{padding:10px 20px}.toast-container{position:fixed;top:20px;right:20px;z-index:10000;display:flex;flex-direction:column;gap:10px;max-width:400px;pointer-events:none}.toast{display:flex;align-items:center;gap:12px;padding:14px 18px;border-radius:8px;box-shadow:0 4px 12px #00000026;background-color:var(--bg-secondary);pointer-events:auto;transform:translate(120%);opacity:0;transition:transform .3s ease,opacity .3s ease}.toast-visible{transform:translate(0);opacity:1}.toast-hiding{transform:translate(120%);opacity:0}.toast-icon{font-size:18px;font-weight:700;flex-shrink:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:50%}.toast-success .toast-icon{background-color:var(--success-bg);color:var(--success)}.toast-error .toast-icon{background-color:var(--danger-bg);color:var(--danger)}.toast-warning .toast-icon{background-color:var(--warning-bg);color:var(--warning-text)}.toast-info .toast-icon{background-color:var(--info-bg);color:var(--info-text)}.toast-message{flex:1;font-size:14px;line-height:1.4;color:var(--text-primary)}.toast-success{border-left:4px solid var(--success)}.toast-error{border-left:4px solid var(--danger)}.toast-warning{border-left:4px solid var(--warning)}.toast-info{border-left:4px solid var(--info)}.toast-close{background:none;border:none;font-size:20px;color:var(--text-tertiary);cursor:pointer;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:background-color .2s}.toast-close:hover{background-color:var(--bg-hover);color:var(--text-primary)}.toast-action{padding:6px 12px;background-color:var(--accent-primary);color:#fff;border:none;border-radius:4px;font-size:12px;cursor:pointer;font-weight:500;transition:background-color .2s}.toast-action:hover{background-color:var(--accent-primary-hover)}.retry-banner{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background-color:var(--warning-bg);border:1px solid var(--warning);border-radius:0;max-height:50px;animation:slideDown .3s ease;position:relative;z-index:99}.retry-banner.retry-failed{background-color:var(--danger-bg);border-color:var(--danger)}@keyframes slideDown{0%{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}.retry-content{display:flex;align-items:center;gap:10px;flex:1;min-width:0}.retry-spinner{width:16px;height:16px;min-width:16px;border:2px solid var(--warning);border-top-color:transparent;border-radius:50%;animation:spin 1s linear infinite}.retry-failed .retry-spinner{display:none}@keyframes spin{to{transform:rotate(360deg)}}.retry-message{font-size:13px;font-weight:500;color:var(--warning-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.retry-failed .retry-message{color:var(--danger-text)}.retry-attempt{font-size:12px;color:var(--warning-text);opacity:.8;white-space:nowrap}.retry-actions{display:flex;gap:6px;flex-shrink:0}.retry-cancel-btn,.retry-manual-btn{padding:4px 12px;font-size:12px;border-radius:4px;cursor:pointer;transition:all .2s;min-height:28px}.retry-cancel-btn{background-color:transparent;border:1px solid var(--warning-text);color:var(--warning-text)}.retry-cancel-btn:hover{background-color:var(--warning-text);color:#fff}.retry-manual-btn{background-color:var(--danger);border:none;color:#fff}.retry-manual-btn:hover{background-color:var(--danger)}.sync-indicator{display:inline-flex;align-items:center;gap:6px;margin-left:12px;font-size:11px;font-weight:500;padding:3px 8px;border-radius:12px;vertical-align:middle}.sync-dot{width:8px;height:8px;border-radius:50%;display:inline-block}.sync-indicator.synced{background-color:var(--success-bg);color:var(--success-text)}.sync-indicator.synced .sync-dot{background-color:var(--success)}.sync-indicator.syncing{background-color:var(--info-bg);color:var(--info-text)}.sync-indicator.syncing .sync-dot{background-color:var(--accent-primary);animation:pulse 1s infinite}.sync-indicator.pending{background-color:var(--warning-bg);color:var(--warning-text)}.sync-indicator.pending .sync-dot{background-color:var(--warning)}.sync-indicator.error{background-color:var(--danger-bg);color:var(--danger-text)}.sync-indicator.error .sync-dot{background-color:var(--danger);animation:pulse .5s infinite}.sync-indicator.offline{background-color:var(--bg-active);color:var(--text-tertiary)}.sync-indicator.offline .sync-dot{background-color:var(--text-tertiary)}.compatibility-warning{padding:12px 20px;background-color:var(--danger-bg);border:1px solid var(--danger-bg);border-radius:8px;margin-bottom:15px;color:var(--danger-text)}.compatibility-warning h3{font-size:14px;margin-bottom:8px}.compatibility-warning ul{margin:0;padding-left:20px;font-size:13px}.compatibility-warning li{margin-bottom:4px}#sessionInfo.status-connected{background-color:var(--success-bg)!important;color:var(--success-text)!important}#sessionInfo.status-connecting,#sessionInfo.status-reconnecting{background-color:var(--warning-bg)!important;color:var(--warning-text)!important}#sessionInfo.status-failed{background-color:var(--danger-bg)!important;color:var(--danger-text)!important}#sessionInfo.status-disconnected{background-color:var(--bg-hover)!important;color:var(--text-tertiary)!important}@media(max-width:1024px){header{padding:10px 15px;gap:10px}header h1{font-size:20px}main{padding:10px;gap:10px}#mainLayout{gap:10px}#codeCanvas,#diagramCanvas{padding:10px}#diagramControls{gap:8px;padding:8px}.tool-group{gap:6px}.messages-panel{width:350px}}@media(max-width:768px){header{display:flex;flex-wrap:wrap;padding:10px;gap:6px;align-items:center}.header-left{display:flex;flex-wrap:wrap;align-items:center;gap:6px;width:100%;padding-right:120px}.header-left h1{font-size:18px;flex:0 0 100%;max-width:calc(100% + -0px)}.header-left .app-version,.header-left .sync-indicator,.header-left .session-timer,.header-left .connection-status{flex-shrink:0}.header-right{position:absolute;top:10px;right:10px;display:flex;gap:6px}.icon-btn{width:36px;height:36px}.header-left .app-version,.header-left .session-timer{font-size:11px}.header-left .sync-indicator{transform:scale(.9)}.header-left .connection-status{font-size:11px;padding:2px 6px;display:inline-flex!important}.header-left .connection-status .conn-mode,.header-left .connection-status .conn-latency{font-size:10px}#sessionInfoContainer{width:100%}#sessionInfo{font-size:11px;padding:4px 8px;word-break:break-all}#headerControls{flex-direction:column;align-items:flex-start;width:100%;gap:8px}.control-group{width:100%}.control-group label{min-width:60px}.control-group select{flex:1;min-height:40px}main{padding:8px;gap:8px}#mainLayout{gap:8px}#tabBar{padding:0}.tab-btn{padding:8px 16px;font-size:13px}#codeCanvas,#diagramCanvas{padding:8px}#codeCanvas h2,#diagramCanvas h2{font-size:14px;margin-bottom:8px}#tabBarWrapper{flex-wrap:wrap;gap:8px}#languageSelector select{min-height:36px;font-size:14px}#codeInput,#codeHighlight{font-size:13px;padding:8px}#diagramControls{flex-wrap:wrap;gap:6px;padding:6px}#diagramControls .tool-divider{width:100%;height:1px;margin:0}#diagramControls .tool-btn-icon{width:32px;height:32px;min-width:32px;min-height:32px}#diagramControls .tool-btn-icon svg{width:16px;height:16px}#diagramControls #colorPicker{width:32px;height:32px;min-width:32px}.tool-group{width:100%;flex-wrap:wrap}.tool-group label{min-width:45px;font-size:12px}.tool-btn{padding:8px 12px;min-height:40px;font-size:13px}#colorPicker{width:44px;height:40px}#brushSize{flex:1;min-width:70px;height:40px}#diagramArea{touch-action:none}.messages-fab{display:flex!important;bottom:calc(16px + env(safe-area-inset-bottom,0px));right:calc(16px + env(safe-area-inset-right,0px));width:52px;height:52px}.messages-panel.desktop-panel{position:fixed;bottom:0;right:0;width:100%;height:70vh;max-height:none;min-width:0;border-radius:16px 16px 0 0;box-shadow:0 -4px 20px #00000026;transform:translateY(100%);z-index:1002;transition:transform .3s ease-out}.messages-panel.desktop-panel.mobile-open{transform:translateY(0)}.messages-overlay{display:block;position:fixed;inset:0;background-color:#0000004d;z-index:1001;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}.messages-overlay.open{opacity:1;visibility:visible}.messages-header{padding:12px}.messages-header h2{font-size:16px}#messagesList{padding:8px}.message{max-width:90%;padding:6px}#messageInput{flex-direction:column;gap:6px;padding:8px}#messageText{min-height:40px;font-size:16px}#sendMessageBtn{width:100%;min-height:40px}.toast-container{left:8px;right:8px;top:8px;max-width:none}.toast{flex-wrap:wrap;padding:10px}.toast-action{margin-top:6px;margin-left:auto}.retry-banner{flex-direction:column;gap:10px;text-align:center;padding:8px 12px}.retry-content{justify-content:center}.retry-actions{width:100%;justify-content:center}.retry-cancel-btn,.retry-manual-btn{min-height:40px;padding:8px 16px}.sync-indicator .sync-text{display:none}.sync-indicator{padding:2px 5px}}@media(max-width:480px){header{padding:8px}header h1{font-size:16px}#sessionInfo{font-size:10px}main{padding:6px;gap:6px}#codeCanvas,#diagramCanvas{border-radius:6px;padding:6px}#codeInput,#codeHighlight{font-size:12px;padding:6px}.tool-btn{padding:6px 8px;font-size:12px}#diagramControls{gap:4px;padding:4px}#diagramControls .tool-btn-icon{width:30px;height:30px;min-width:30px;min-height:30px;border-radius:5px}#diagramControls .tool-btn-icon svg{width:14px;height:14px}#diagramControls #colorPicker{width:30px;height:30px;min-width:30px}#diagramControls .tool-divider{margin:0}.messages-fab{bottom:calc(12px + env(safe-area-inset-bottom,0px));right:calc(12px + env(safe-area-inset-right,0px));width:48px;height:48px}.messages-fab svg{width:20px;height:20px}.message{font-size:12px}.message-header{font-size:10px}.message-text{font-size:12px}}.modal{display:flex;position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;z-index:2000;align-items:center;justify-content:center;padding:20px}.modal.hidden{display:none}.modal-content{background-color:var(--bg-secondary);padding:32px;border-radius:12px;box-shadow:0 8px 32px #0003;max-width:400px;width:100%;text-align:center}.modal-content h2{margin:0 0 8px;font-size:24px;color:var(--text-primary)}.modal-subtitle{color:var(--text-tertiary);font-size:14px;margin-bottom:24px}.modal-content input[type=text]{width:100%;padding:12px 16px;font-size:16px;border:2px solid var(--border-primary);border-radius:8px;margin-bottom:8px;transition:border-color .2s;background-color:var(--bg-tertiary);color:var(--text-primary)}.modal-content input[type=text]:focus{outline:none;border-color:var(--accent-primary)}.modal-content .error-message{color:var(--danger);font-size:13px;min-height:20px;margin-bottom:16px}.modal-content button{width:100%;padding:14px 24px;font-size:16px;font-weight:600;border-radius:8px}.modal-content button:disabled{background-color:var(--border-primary);cursor:not-allowed}.modal-buttons{display:flex;gap:12px;margin-top:8px}.modal-buttons button{flex:1}.modal-content .btn-secondary{background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-primary)}.modal-content .btn-secondary:hover{background-color:var(--bg-hover)}.modal-content .btn-danger{background-color:var(--danger);color:#fff}.modal-content .btn-danger:hover{background-color:#c82333}.participants-section{border-bottom:1px solid var(--border-primary);padding-bottom:8px;margin-bottom:8px}.participants-header{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;cursor:pointer;font-size:13px;font-weight:600;color:var(--text-secondary);-webkit-user-select:none;user-select:none}.participants-header:hover{background-color:var(--bg-primary);border-radius:4px}.participants-header .toggle-icon{transition:transform .2s}.participants-section.collapsed .toggle-icon{transform:rotate(-90deg)}.participants-section.collapsed .participants-list{display:none}.participants-list{list-style:none;margin:0;padding:4px 8px;max-height:150px;overflow-y:auto}.participant-item{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:4px;font-size:13px}.participant-item:hover{background-color:var(--bg-primary)}.participant-item.is-self{background-color:var(--msg-self-bg)}.participant-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.participant-name.editable{cursor:pointer}.participant-name.editable:hover{text-decoration:underline;text-decoration-style:dotted}.edit-name-btn{background:none;border:none;padding:2px 4px;cursor:pointer;opacity:.5;transition:opacity .2s;display:flex;align-items:center}.edit-name-btn:hover{opacity:1}.name-edit-input{flex:1;padding:2px 6px;border:1px solid var(--accent-primary);border-radius:3px;font-size:13px;font-family:inherit;outline:none}.host-badge{color:var(--host-badge);display:flex;align-items:center;flex-shrink:0}.host-badge svg{fill:var(--host-badge)}.connection-dot{width:8px;height:8px;border-radius:50%;background-color:var(--success);flex-shrink:0}.connection-dot.connecting{background-color:var(--warning);animation:pulse 1s infinite}.connection-dot.disconnected{background-color:var(--danger)}.participant-connection-info{display:flex;align-items:center;gap:4px;font-size:10px;font-family:SF Mono,Monaco,Cascadia Code,monospace;flex-shrink:0}.participant-conn-type{padding:1px 4px;border-radius:2px;font-weight:600;text-transform:uppercase;letter-spacing:.3px;background-color:var(--bg-active);color:var(--text-muted)}.participant-conn-type.p2p{background-color:var(--success-bg);color:var(--success)}.participant-conn-type.relay{background-color:var(--warning-bg);color:var(--warning-text)}.participant-conn-latency{color:var(--text-muted)}.participant-conn-latency.low{color:var(--success)}.participant-conn-latency.medium{color:var(--warning-text)}.participant-conn-latency.high{color:var(--danger)}.participant-conn-latency.excellent{color:var(--success)}.participant-conn-latency.good{color:var(--warning-text)}.participant-conn-latency.poor{color:var(--danger)}.participant-conn-latency.unknown{color:var(--text-muted)}.app-footer{display:flex;justify-content:center;align-items:center;gap:.5rem;margin:0;padding:.25rem 1rem;font-size:.7rem;color:var(--text-muted);border-top:1px solid var(--border-primary);background-color:var(--bg-secondary);white-space:nowrap}.app-footer a{color:var(--accent-primary);text-decoration:none}.app-footer a:hover{text-decoration:underline}.app-footer .footer-separator,.app-footer .footer-copyright{color:var(--text-muted)}@media(max-width:768px){.app-footer{text-align:center;font-size:.65rem;padding:.25rem 76px .25rem .5rem}}