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var(--border-default)}.export-buttons button{background:var(--surface-primary);color:var(--gray-800);border:1px solid var(--border-strong);padding:.3rem .75rem;border-radius:var(--radius-sm);cursor:pointer;font-size:var(--text-sm);font-weight:var(--font-weight-medium);transition:all var(--transition-fast)}.export-buttons button:hover{background:var(--gray-150);border-color:var(--gray-400)}.spec-viewer pre{flex:1;margin:0;padding:1rem;overflow:auto;font-family:var(--font-family-mono);font-size:var(--text-base);line-height:var(--leading-normal);background-color:var(--gray-50);color:var(--gray-800)}.canvas-context-menu{position:fixed;background:var(--surface-primary);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:calc(var(--z-overlay) + 10);min-width:120px;overflow:hidden;animation:fadeIn .15s ease-out}@keyframes 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3px);right:0;z-index:var(--z-dropdown, 1000);list-style:none;margin:0;padding:3px 0;background:var(--surface-primary);border:1px solid var(--border-default);border-radius:var(--radius-sm);box-shadow:var(--shadow-md);min-width:260px;white-space:nowrap}.cvd-dropdown-item{padding:.35rem .6rem;cursor:pointer;transition:background var(--transition-fast)}.cvd-dropdown-item:hover{background:var(--gray-100)}.cvd-dropdown-item.selected{background:var(--color-accent-lighter);font-weight:var(--font-weight-medium)}.cvd-item-main{display:flex;align-items:center;justify-content:space-between;gap:.5rem}.cvd-item-label{font-size:var(--text-base);color:var(--text-primary)}.cvd-item-prevalence{font-size:var(--text-xs);color:var(--text-tertiary)}.cvd-item-desc{font-size:var(--text-xs);color:var(--text-tertiary);margin-top:1px}.custom-drag-layer{position:fixed;pointer-events:none;z-index:var(--z-drag);left:0;top:0;width:100%;height:100%}.drag-chip{position:absolute;left:0;top:0;display:inline-flex;align-items:center;padding:4px 10px;background:var(--color-accent);color:var(--surface-primary);font-size:var(--text-sm);font-weight:500;border-radius:var(--radius-sm);box-shadow:var(--shadow-md);white-space:nowrap;max-width:200px;overflow:hidden;text-overflow:ellipsis}.shortcuts-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--surface-overlay, rgba(0, 0, 0, .4));display:flex;align-items:center;justify-content:center;z-index:var(--z-modal, 9999);animation:shortcuts-fade-in var(--transition-fast, .12s) ease}@keyframes shortcuts-fade-in{0%{opacity:0}to{opacity:1}}.shortcuts-panel{background:var(--surface-primary, #ffffff);border-radius:var(--radius-lg, 8px);box-shadow:var(--shadow-xl, 0 8px 30px rgba(0, 0, 0, .18));width:480px;max-width:92vw;max-height:80vh;display:flex;flex-direction:column;overflow:hidden;animation:shortcuts-slide-up var(--transition-normal, .2s) ease}@keyframes shortcuts-slide-up{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.shortcuts-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-3, 12px) var(--space-4, 16px);border-bottom:1px solid var(--border-default, #e0e0e0);flex-shrink:0}.shortcuts-header h2{margin:0;font-size:var(--text-md, 14px);font-weight:var(--font-weight-semibold, 600);color:var(--text-primary, #1e1e1e)}.shortcuts-close-btn{background:none;border:none;cursor:pointer;color:var(--text-secondary, #666);font-size:18px;line-height:1;padding:var(--space-1, 4px);border-radius:var(--radius-sm, 3px);display:flex;align-items:center;justify-content:center;transition:background var(--transition-fast, .12s)}.shortcuts-close-btn:hover{background:var(--surface-secondary, #fafafa);color:var(--text-primary, #1e1e1e)}.shortcuts-body{padding:var(--space-4, 16px);overflow-y:auto;flex:1}.shortcuts-category{margin-bottom:var(--space-5, 20px)}.shortcuts-category:last-child{margin-bottom:0}.shortcuts-category-title{font-size:var(--text-sm, 12px);font-weight:var(--font-weight-semibold, 600);color:var(--text-secondary, #666);text-transform:uppercase;letter-spacing:.05em;margin:0 0 var(--space-2, 8px) 0;padding-bottom:var(--space-1, 4px);border-bottom:1px solid var(--border-light, #eee)}.shortcut-row{display:flex;align-items:center;justify-content:space-between;padding:var(--space-1, 4px) 0}.shortcut-description{font-size:var(--text-base, 13px);color:var(--text-primary, #1e1e1e)}.shortcut-keys{display:flex;align-items:center;gap:var(--space-1, 4px);flex-shrink:0;margin-left:var(--space-4, 16px)}.shortcut-keys kbd{display:inline-block;padding:2px 6px;font-family:var(--font-family-mono, "Consolas", monospace);font-size:var(--text-xs, 11px);font-weight:var(--font-weight-medium, 500);color:var(--text-primary, #1e1e1e);background:var(--surface-secondary, #fafafa);border:1px solid var(--border-default, #e0e0e0);border-radius:var(--radius-sm, 3px);box-shadow:0 1px 0 var(--border-default, #e0e0e0);line-height:1.4;white-space:nowrap}.shortcut-keys .key-separator{font-size:var(--text-xs, 11px);color:var(--text-tertiary, #999)}.shortcuts-footer{padding:var(--space-2, 8px) var(--space-4, 16px);border-top:1px solid var(--border-light, #eee);text-align:center;flex-shrink:0}.shortcuts-footer-hint{font-size:var(--text-xs, 11px);color:var(--text-tertiary, #999);margin:0}.shortcuts-trigger-btn{background:none;border:1px solid transparent;cursor:pointer;color:var(--text-secondary, #666);font-size:var(--text-sm, 12px);padding:2px 8px;border-radius:var(--radius-sm, 3px);transition:all var(--transition-fast, .12s);display:flex;align-items:center;gap:var(--space-1, 4px)}.shortcuts-trigger-btn:hover{background:var(--surface-secondary, #fafafa);border-color:var(--border-default, #e0e0e0);color:var(--text-primary, #1e1e1e)}.shortcuts-trigger-btn kbd{display:inline-block;padding:0 4px;font-family:var(--font-family-mono, "Consolas", monospace);font-size:var(--text-xs, 11px);background:var(--surface-secondary, #fafafa);border:1px solid var(--border-default, #e0e0e0);border-radius:2px;line-height:1.5}.status-bar{flex-shrink:0;width:100%;height:28px;background:var(--surface-panel);border-top:1px solid var(--border-default);display:flex;align-items:center;justify-content:space-between;padding:0 var(--space-4);font-size:var(--text-xs);color:var(--text-secondary);box-shadow:0 -1px 3px #0000000d}.status-bar-left{display:flex;align-items:center;gap:var(--space-4);min-width:0;flex-shrink:0}.status-bar-right{display:flex;align-items:center;gap:var(--space-4);flex-shrink:0}.status-bar-center{flex:1;display:flex;align-items:center;justify-content:center;min-width:0;padding:0 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pulse-indicator{0%,to{opacity:1}50%{opacity:.6}}.settings-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--surface-overlay, rgba(0, 0, 0, .4));display:flex;align-items:center;justify-content:center;z-index:var(--z-modal, 9999);animation:settings-fade-in var(--transition-fast)}@keyframes settings-fade-in{0%{opacity:0}to{opacity:1}}.settings-panel{background:var(--surface-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);display:flex;flex-direction:column;max-height:90vh;width:90%;max-width:480px;animation:settings-slide-up var(--transition-fast)}@keyframes settings-slide-up{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4);border-bottom:1px solid var(--border-default);gap:var(--space-2)}.settings-header h2{margin:0;font-size:var(--text-base);font-weight:600;color:var(--text-primary);letter-spacing:.5px}.settings-close-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border:1px solid transparent;border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast);flex-shrink:0}.settings-close-btn:hover{background:var(--surface-hover);color:var(--text-primary)}.settings-body{flex:1;padding:var(--space-4);overflow-y:auto}.settings-section{display:flex;flex-direction:column;gap:var(--space-3)}.settings-section 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#0078d41a}.settings-input{padding:var(--space-2) var(--space-2);border:1px solid var(--border-default);border-radius:var(--radius-md);background:var(--surface-primary);color:var(--text-primary);font-size:var(--text-sm);font-family:var(--font-family-body);transition:border-color var(--transition-fast),background var(--transition-fast)}.settings-input::placeholder{color:var(--text-tertiary);opacity:.6}.settings-input:hover{border-color:var(--border-hover)}.settings-input:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 2px #0078d41a}.settings-input-hint{margin:0;font-size:var(--text-xs);color:var(--text-tertiary);opacity:.7;line-height:1.4}.settings-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--space-2);padding:var(--space-4);border-top:1px solid var(--border-default);background:var(--surface-panel)}.settings-btn-cancel,.settings-btn-save{padding:var(--space-2) var(--space-4);border:1px solid 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#0078d44d}.settings-btn-save:active{opacity:.95}.settings-body::-webkit-scrollbar{width:8px}.settings-body::-webkit-scrollbar-track{background:transparent}.settings-body::-webkit-scrollbar-thumb{background:var(--border-default);border-radius:4px}.settings-body::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.app{display:flex;flex-direction:column;height:100vh;background-color:var(--gray-150)}.app:fullscreen,.app:-webkit-full-screen,.app:-moz-full-screen{display:flex;flex-direction:column;width:100vw;height:100vh;background-color:var(--gray-150)}.app-header{background:var(--surface-panel);color:var(--text-primary);padding:0 var(--space-4);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-default);height:var(--header-height);min-height:var(--header-height)}.header-left{display:flex;align-items:center;gap:var(--space-2);min-width:0}.header-menu-wrapper{position:relative;flex-shrink:0}.header-menu-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border:1px solid transparent;border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast);flex-shrink:0}.header-menu-btn:hover,.header-menu-btn.active{background:var(--surface-header);color:var(--text-primary);border-color:var(--border-default)}.header-menu-dropdown{position:absolute;top:calc(100% + 4px);left:0;z-index:var(--z-dropdown);background:var(--surface-primary);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);min-width:210px;padding:var(--space-1) 0;display:flex;flex-direction:column}.header-menu-dropdown button{display:flex;align-items:center;gap:var(--space-2);width:100%;padding:.35rem var(--space-3);border:none;background:transparent;color:var(--text-primary);font-size:var(--text-sm);font-weight:var(--font-weight-normal);text-align:left;cursor:pointer;white-space:nowrap;transition:background var(--transition-fast)}.header-menu-dropdown button:hover:not(:disabled){background:var(--surface-header)}.header-menu-dropdown button:disabled{color:var(--text-tertiary);cursor:not-allowed}.header-menu-dropdown button kbd{margin-left:auto;font-size:var(--text-xs);color:var(--text-tertiary);background:var(--surface-header);border:1px solid var(--border-default);border-radius:3px;padding:0 4px;font-family:var(--font-family-mono)}.header-menu-divider{height:1px;background:var(--border-default);margin:var(--space-1) 0}.app-header h1{font-size:var(--text-md);font-weight:var(--font-weight-semibold);margin:0;letter-spacing:.3px;white-space:nowrap;color:var(--text-primary)}.app-header h1 .version{font-size:var(--text-sm);font-weight:var(--font-weight-normal);opacity:.5;margin-left:var(--space-2)}.header-attribution-link{font-size:var(--text-sm);font-weight:var(--font-weight-medium);color:var(--color-accent);text-decoration:none;margin-left:var(--space-2)}.header-attribution-link:hover{text-decoration:underline}.header-attribution-link:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:2px}.header-rights{font-size:var(--text-sm);font-weight:var(--font-weight-normal);opacity:.5;margin-left:2px}.header-experimental-warning{font-size:var(--text-xs, 11px);font-weight:var(--font-weight-medium);color:#fff;background:#d97706;padding:2px 8px;border-radius:4px;margin-top:3px;letter-spacing:.01em}.app-header p{display:none}.theme-selector{display:flex;align-items:center;gap:var(--space-2)}.theme-label{font-size:var(--text-sm);font-weight:var(--font-weight-medium);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.4px}.app-content{display:flex;flex:1;overflow:hidden}.schema-panel-wrapper{position:relative;display:flex;flex-shrink:0}.schema-resize-handle{width:4px;cursor:col-resize;background:transparent;transition:background-color var(--transition-fast);flex-shrink:0}.schema-resize-handle:hover{background-color:var(--color-accent)}.build-panel-wrapper{position:relative;display:flex;flex-shrink:0;overflow:hidden;border-right:1px solid var(--border-default)}.build-resize-handle{width:4px;cursor:col-resize;background:transparent;transition:background-color var(--transition-fast);flex-shrink:0}.build-resize-handle:hover{background-color:var(--color-accent)}.grid-toggle{display:inline-flex;align-items:center;gap:.3rem;font-size:var(--text-sm);font-weight:var(--font-weight-medium);color:var(--text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none;margin-left:var(--space-3)}.grid-toggle input[type=checkbox]{width:13px;height:13px;margin:0;accent-color:var(--color-accent)}.header-settings-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border:1px solid transparent;border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast);flex-shrink:0;margin-left:var(--space-2)}.header-settings-btn:hover{background:var(--surface-header);color:var(--text-primary);border-color:var(--border-default)}.header-preview-btn{display:inline-flex;align-items:center;gap:.3rem;padding:.3rem .65rem;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface-primary);color:var(--text-secondary);font-size:var(--text-sm);font-weight:var(--font-weight-medium);cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast);margin-right:var(--space-2)}.header-preview-btn:hover{background:var(--gray-150);color:var(--text-primary)}.header-preview-btn.active{background:var(--color-accent);color:var(--text-on-accent);border-color:var(--color-accent)}:root{--gray-50: #fafafa;--gray-100: #f3f3f3;--gray-150: #eaeaea;--gray-200: #e0e0e0;--gray-300: #d0d0d0;--gray-400: #b0b0b0;--gray-500: #888888;--gray-600: #666666;--gray-700: #444444;--gray-800: #333333;--gray-900: #1e1e1e;--color-accent: var(--accent-color, #0078d4);--color-accent-hover: color-mix(in srgb, var(--color-accent), black 18%);--color-accent-light: color-mix(in srgb, var(--color-accent), transparent 90%);--color-accent-lighter:color-mix(in srgb, var(--color-accent), transparent 94%);--color-success: #2ea043;--color-success-light: #f0fdf4;--color-error: #d32f2f;--color-error-light: #fef2f2;--color-warning: #e65100;--color-warning-light: #fff3e0;--surface-primary: #ffffff;--surface-secondary: var(--gray-50);--surface-panel: #f8f9fa;--surface-header: var(--gray-100);--surface-overlay: rgba(0, 0, 0, .25);--text-primary: var(--gray-900);--text-secondary: var(--gray-600);--text-tertiary: var(--gray-500);--text-placeholder: var(--gray-400);--text-on-accent: #ffffff;--border-default: var(--gray-200);--border-light: var(--gray-150);--border-strong: var(--gray-300);--border-input: var(--gray-300);--text-xs: .6875rem;--text-sm: .75rem;--text-base: .8125rem;--text-md: .875rem;--text-lg: 1rem;--text-xl: 1.25rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold:600;--font-weight-bold: 700;--font-family-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-family-mono: "Cascadia Code", "Fira Code", "JetBrains Mono", Consolas, "Courier New", monospace;--leading-tight: 1.3;--leading-normal: 1.5;--space-0: 0;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--radius-sm: 3px;--radius-md: 5px;--radius-lg: 8px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 2px 8px rgba(0, 0, 0, .12);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .15);--shadow-xl: 0 8px 30px rgba(0, 0, 0, .18);--transition-fast: .12s ease;--transition-normal: .2s ease;--transition-slow: .3s ease;--z-dropdown: 100;--z-sticky: 200;--z-overlay: 1000;--z-modal: 9999;--z-drag: 10000;--header-height: 38px;--panel-collapsed-width: 36px;--scrollbar-width: 8px}@keyframes icon-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-family-body);font-size:var(--text-base);line-height:var(--leading-normal);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--gray-150);color:var(--text-primary)}code{font-family:var(--font-family-mono);font-size:.9em}::-webkit-scrollbar{width:var(--scrollbar-width);height:var(--scrollbar-width)}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#00000026;border-radius:var(--radius-sm)}::-webkit-scrollbar-thumb:hover{background:#00000040}.template-library ::-webkit-scrollbar-thumb{background:#0000001f}.template-library ::-webkit-scrollbar-thumb:hover{background:#00000038}::selection{background:var(--color-accent-light)}