:root{--color-neutral-0: #ffffff;--color-neutral-50: #fafafa;--color-neutral-100: #f5f5f5;--color-neutral-200: #eeeeee;--color-neutral-300: #e0e0e0;--color-neutral-400: #bdbdbd;--color-neutral-500: #9e9e9e;--color-neutral-600: #757575;--color-neutral-700: #616161;--color-neutral-800: #424242;--color-neutral-900: #212121;--color-primary-50: #e3f2fd;--color-primary-100: #bbdefb;--color-primary-200: #90caf9;--color-primary-300: #64b5f6;--color-primary-400: #42a5f5;--color-primary-500: #2196f3;--color-primary-600: #1e88e5;--color-primary-700: #1976d2;--color-primary-800: #1565c0;--color-primary-900: #0d47a1;--color-success: #4caf50;--color-warning: #ff9800;--color-error: #f44336;--color-info: #2196f3;--color-bg-dark: #1e1e1e;--color-bg-darker: #141414;--color-border-dark: #333333;--color-text-dark: #e0e0e0;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-xl: 10px;--radius-full: 9999px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-family-mono: "Consolas", "Monaco", "Courier New", monospace;--font-size-xs: 11px;--font-size-sm: 12px;--font-size-base: 13px;--font-size-md: 14px;--font-size-lg: 16px;--font-size-xl: 18px;--font-size-2xl: 20px;--font-size-3xl: 24px;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.2;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px 0 rgba(0, 0, 0, .06);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--transition-fast: .12s ease-out;--transition-base: .18s ease-out;--transition-slow: .3s ease-out;--z-dropdown: 1000;--z-sticky: 1100;--z-fixed: 1200;--z-modal-backdrop: 1300;--z-modal: 1400;--z-popover: 1500;--z-tooltip: 1600;--activity-bar-width: 48px;--sidebar-width: 300px;--sidebar-collapsed-width: 0px;--statusbar-height: 24px;--titlebar-height: 35px;--bg-primary: var(--color-neutral-0);--bg-secondary: var(--color-neutral-50);--bg-tertiary: var(--color-neutral-100);--bg-hover: var(--color-neutral-200);--bg-active: var(--color-neutral-300);--text-primary: var(--color-neutral-900);--text-secondary: var(--color-neutral-700);--text-tertiary: var(--color-neutral-500);--text-disabled: var(--color-neutral-400);--border-color: var(--color-neutral-300);--border-hover: var(--color-neutral-400);--border-focus: var(--color-primary-500);--accent-color: var(--color-primary-600);--accent-hover: var(--color-primary-700);--accent-active: var(--color-primary-800)}[data-theme=dark]{--bg-primary: var(--color-bg-dark);--bg-secondary: var(--color-bg-darker);--bg-tertiary: #252525;--bg-hover: #2d2d2d;--bg-active: #353535;--text-primary: var(--color-text-dark);--text-secondary: var(--color-neutral-400);--text-tertiary: var(--color-neutral-500);--text-disabled: var(--color-neutral-600);--border-color: var(--color-border-dark);--border-hover: #404040;--border-focus: var(--color-primary-500);--accent-color: var(--color-primary-500);--accent-hover: var(--color-primary-400);--accent-active: var(--color-primary-300)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--text-primary);background-color:var(--bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button{font-family:inherit;cursor:pointer}input,textarea,select{font-family:inherit}*:focus-visible{outline:2px solid var(--border-focus);outline-offset:2px}::selection{background-color:var(--color-primary-200);color:var(--color-primary-900)}[data-theme=dark] ::selection{background-color:var(--color-primary-800);color:var(--color-primary-100)}.app-shell{width:100vw;height:100vh;overflow:hidden;background-color:var(--bg-primary)}.app-shell__grid{display:grid;grid-template-columns:var(--activity-bar-width) var(--sidebar-width) 1fr;grid-template-rows:1fr;height:calc(100vh - var(--statusbar-height));transition:grid-template-columns var(--transition-base)}.app-shell__grid.sidebar-collapsed{grid-template-columns:var(--activity-bar-width) var(--sidebar-collapsed-width) 1fr}.activity-bar{background-color:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;align-items:center;padding:var(--space-2) 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var(--space-4);border-bottom:1px solid var(--border-color);min-height:40px}.sidebar__title{font-size:var(--font-size-md);font-weight:var(--font-weight-semibold);color:var(--text-primary)}.sidebar__actions{display:flex;gap:var(--space-1)}.sidebar__action-btn{width:24px;height:24px;border:none;background:transparent;color:var(--text-secondary);font-size:18px;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center}.sidebar__action-btn:hover{background-color:var(--bg-hover);color:var(--text-primary)}.sidebar__content{flex:1;overflow-y:auto;overflow-x:hidden}.app-shell__editor{position:relative;background-color:var(--bg-primary);overflow:hidden}.viewer-host__canvas{width:100%;height:100%;display:block}.statusbar{height:var(--statusbar-height);background-color:var(--bg-secondary);border-top:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 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var(--transition-fast)}.panel__list-item:hover{background-color:var(--bg-hover)}.panel__list-icon{font-size:16px}.panel__list-text{font-size:var(--font-size-sm);color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.panel__empty{font-size:var(--font-size-sm);color:var(--text-tertiary);text-align:center;padding:var(--space-6) var(--space-4)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);background-color:var(--bg-secondary);color:var(--text-primary);cursor:pointer;transition:all var(--transition-fast)}.btn:hover{background-color:var(--bg-hover);border-color:var(--border-hover)}.btn--primary{background-color:var(--accent-color);color:#fff;border-color:var(--accent-color)}.btn--primary:hover{background-color:var(--accent-hover);border-color:var(--accent-hover)}.btn--block{width:100%}.input{width:100%;padding:var(--space-2) var(--space-3);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:var(--font-size-sm);background-color:var(--bg-secondary);color:var(--text-primary);transition:all var(--transition-fast)}.input:hover{border-color:var(--border-hover)}.input:focus{border-color:var(--border-focus);outline:none}.input--block{width:100%}.modal-host{position:fixed;inset:0;z-index:var(--z-modal);pointer-events:none}.modal-backdrop{position:absolute;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity 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i{font-size:16px}.avatar-customizer-content::-webkit-scrollbar{width:8px}.avatar-customizer-content::-webkit-scrollbar-track{background:#ffffff0d;border-radius:4px}.avatar-customizer-content::-webkit-scrollbar-thumb{background:#fff3;border-radius:4px}.avatar-customizer-content::-webkit-scrollbar-thumb:hover{background:#ffffff4d}@media(max-width:768px){.avatar-customizer-panel{max-width:100%;max-height:100vh;border-radius:0}.avatar-presets-grid{grid-template-columns:repeat(2,1fr)}.avatar-parts-grid{grid-template-columns:repeat(auto-fill,minmax(80px,1fr))}.avatar-customizer-footer{flex-wrap:wrap}.avatar-name-input{width:100%;flex:1 1 100%}}.multiplayer-controls{position:fixed;bottom:20px;left:50%;transform:translate(-50%);z-index:1000;display:flex;align-items:center;justify-content:center;pointer-events:auto}.multiplayer-controls-panel{background:#14141ef2;backdrop-filter:blur(10px);border-radius:50px;padding:12px 24px;display:flex;align-items:center;gap:12px;box-shadow:0 8px 32px 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