*{box-sizing:border-box}:root{--background: hsl(0, 0%, 6.7%);--foreground: hsl(0, 0%, 98%);--muted: hsl(240, 3.7%, 15.9%);--muted-foreground: hsl(240, 5%, 64.9%);--card: hsl(240, 10%, 3.9%);--card-foreground: hsl(0, 0%, 98%);--border: hsl(240, 3.7%, 15.9%);--primary: hsl(207, 90%, 54%);--primary-foreground: hsl(211, 100%, 99%);--control-bg: hsl(0, 0%, 20%);--fab-size-d: 48px;--fab-size-m: 40px;--panel-width: clamp(240px, 16vw, 270px);--panel-bg: #2b2b2b;--panel-shadow: -4px 0 8px rgba(0, 0, 0, .5);--marker-turquoise: hsl(184, 100%, 40%);--marker-red: hsl(4, 90%, 58%);--marker-blue: hsl(207, 90%, 54%);--marker-black: hsl(0, 0%, 26%);--accent-turquoise: #00bcd4;--accent-red: #f44336;--accent-blue: #2196f3;--accent-black: #000000;--accent-orange: #ff9800;--accent-green: #4caf50;--accent-purple: #9c27b0;--accent-brown: #795548;--accent-gray-1: #9e9e9e;--accent-gray-2: #757575;--accent-gray-3: #616161;--accent-gray-4: #424242}body{font-family:Roboto,-apple-system,BlinkMacSystemFont,Segoe 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h3{margin:0;font-size:1.2rem;font-weight:500;color:#fff}.close-sheet{width:32px;height:32px;border-radius:50%;background:#ffffff1a;border:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.close-sheet:hover{background:#fff3}.sheet-content{padding:20px 24px;padding-bottom:calc(100px + env(safe-area-inset-bottom));flex:1;overflow-y:auto}.sheet-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0006;opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:999}.sheet-overlay.active{opacity:1;pointer-events:auto}@media (max-width: 768px){.canvas-container{height:calc(100vh - 70px)}.nav-icon{width:40px;height:40px}.bottom-nav{height:70px;padding:0 12px}.sheet-content{padding:16px 20px;padding-bottom:calc(90px + env(safe-area-inset-bottom))}.sheet-header{padding:16px 20px 12px}}.panel-header{display:flex;justify-content:space-between;align-items:center;padding-bottom:16px;border-bottom:1px solid 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300px)}.sidebar-trigger{position:fixed;top:0;inset-inline-end:0;width:20px;height:100vh;z-index:999;background:transparent}body.mobile-mode{overflow:auto}body.mobile-mode .canvas-container{height:100vh;margin-bottom:0}body.mobile-mode .canvas-container.sidebar-pinned{margin-inline-end:300px;height:100vh;margin-bottom:0}body.mobile-mode .control-panel{position:fixed;top:0;inset-inline-end:-300px;bottom:0;width:280px;height:100vh;background:#262626fa;border-radius:0;border-inline-start:2px solid hsla(0,0%,30%,.5);border-top:none;padding:15px;transition:inset-inline-end .3s ease;box-shadow:-4px 0 20px #0000004d;overflow-y:auto}body.mobile-mode .control-panel.visible{inset-inline-end:0}body.mobile-mode .control-panel.pinned{inset-inline-end:0;border-inline-start-color:var(--primary)}body.mobile-mode .sidebar-trigger{top:0;inset-inline-end:0;bottom:0;width:20px;height:100vh;inset-inline-start:auto;background:#ffffff0d;border-inline-start:1px solid rgba(255,255,255,.1);display:block;z-index:100}body.mobile-mode .control-section{margin-bottom:10px}body.mobile-mode .section-title{font-size:.75rem;margin-bottom:6px}body.mobile-mode .zoom-controls,body.mobile-mode .color-controls,body.mobile-mode .action-controls{grid-template-columns:1fr;gap:8px}body.mobile-mode .control-button{width:100%;max-width:240px;height:50px;border-radius:8px;font-size:.9rem;justify-content:flex-start;padding-left:16px;gap:12px}body.mobile-mode .tooltip,body.mobile-mode .keyboard-hint{display:none}body.mobile-mode .sidebar-header{margin-bottom:8px;padding-bottom:6px}body.mobile-mode .sidebar-title{font-size:.9rem}.mobile-button-text{display:none}body.mobile-mode .mobile-button-text{display:inline;font-weight:500}body.mobile-mode .navigation-grid .control{min-height:60px}body.mobile-mode .navigation-grid .fab{width:48px;height:48px;min-width:48px;min-height:48px}body.mobile-mode .fab{min-width:44px;min-height:44px}.mobile-text-actions{display:none!important}.mobile-context-menu{position:fixed;background:#1f1f1ff2;border:1px solid hsla(0,0%,30%,.6);border-radius:16px;padding:16px 20px 12px;display:flex;gap:16px;z-index:4000;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);flex-direction:column;min-width:320px}.mobile-context-menu.hidden{display:none}.menu-buttons{display:flex;gap:16px;justify-content:center}.ctx-btn{display:flex;flex-direction:column;align-items:center;gap:4px;width:56px;height:56px;color:#fff;background:none;border:none;border-radius:12px;cursor:pointer;transition:all .2s ease}.ctx-btn:hover:not(:disabled){background:#ffffff1a}.ctx-btn:disabled{opacity:.35;cursor:not-allowed}.ctx-btn span:first-child{font-size:20px}.ctx-btn span:last-child{font-size:10px;font-weight:500}.menu-subtitle{font-size:11px;color:#ffffffb3;text-align:center;margin-top:4px;padding-top:8px;border-top:1px solid rgba(255,255,255,.1);display:none}.menu-subtitle.visible{display:block}.format-panel{position:fixed;top:50%;right:20px;transform:translateY(-50%);width:280px;background:var(--card);border:1px solid var(--border);border-radius:8px;box-shadow:0 8px 32px #0000004d;z-index:1000;color:var(--foreground);max-height:80vh;overflow-y:auto}.format-panel.hidden{display:none}.format-header{display:flex;justify-content:space-between;align-items:center;padding:16px;border-bottom:1px solid var(--border);background:var(--muted)}.format-header h3{margin:0;font-size:1rem;font-weight:500;color:var(--foreground)}.close-btn{background:none;border:none;color:var(--muted-foreground);cursor:pointer;padding:12px;border-radius:4px;transition:all .2s ease;min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}.close-btn:hover{background:var(--muted);color:var(--foreground)}.format-controls{padding:16px;display:flex;flex-direction:column;gap:16px}.control-group{display:flex;flex-direction:column;gap:8px}.control-group label{font-size:.85rem;font-weight:500;color:var(--foreground)}.radio-group{display:flex;flex-direction:column;gap:6px}.radio-group label{display:flex;align-items:center;gap:8px;font-size:.8rem;font-weight:400;cursor:pointer}.radio-group input[type=radio]{margin:0}.control-group input[type=color]{width:100%;height:32px;border:1px solid var(--border);border-radius:4px;background:transparent;cursor:pointer}.control-group input[type=range]{width:100%;height:6px;background:var(--muted);border-radius:3px;outline:none;cursor:pointer}.control-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;background:var(--primary);border-radius:50%;cursor:pointer}.control-group input[type=number],.control-group select{width:100%;padding:8px 12px;background:var(--muted);border:1px solid var(--border);border-radius:4px;color:var(--foreground);font-size:.85rem}.control-group input[type=number]:focus,.control-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px #3b82f61a}#textBoxLineFormat{display:none}body.textbox-active #textBoxLineFormat{display:flex;flex-direction:column;gap:12px;margin-top:12px;padding:12px;background:var(--muted);border-radius:8px;border:1px solid var(--border)}#textBoxSection.collapsed #textBoxLineFormat{display:none!important}.line-format .format-group{display:flex;flex-direction:column;gap:6px}.line-format .format-group label{font-size:.85rem;font-weight:500;color:var(--foreground)}.line-format input[type=range]{width:100%;accent-color:var(--primary);height:6px;background:var(--muted);border-radius:3px;outline:none;cursor:pointer}.line-format input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;background:var(--primary);border-radius:50%;cursor:pointer}.line-format input[type=color]{width:100%;height:32px;border:1px solid var(--border);border-radius:4px;background:transparent;cursor:pointer}.line-format select{width:100%;padding:8px 12px;background:var(--card);border:1px solid var(--border);border-radius:4px;color:var(--foreground);font-size:.85rem;cursor:pointer}.line-format select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px #3b82f61a}.line-format .radio-group{display:flex;flex-direction:column;gap:8px}.line-format .radio-option{display:flex;align-items:center;gap:8px;font-size:.85rem;font-weight:400;cursor:pointer}.line-format .radio-option input[type=radio]{margin:0;accent-color:var(--primary)}.line-format .range-value{font-size:.75rem;color:var(--muted-foreground);text-align:center;font-weight:500}.textbox-handle{position:absolute;width:8px;height:8px;background:var(--primary);border:1px solid 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var(--primary)}.dialog-buttons{display:flex;gap:12px;justify-content:flex-end}.dialog-buttons button{background:var(--primary);color:#fff;border:none;padding:8px 16px;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500}.dialog-buttons button:hover{filter:brightness(1.1)}.dialog-buttons button:active{transform:translateY(1px)}@media (max-width: 600px){:root{--fab-size-d: var(--fab-size-m)}.control-panel{width:240px;padding:16px 12px;gap:20px}.panel-title,.panel-group h2{font-size:1rem}.section-header .toggle{width:24px;height:24px}.section-header .toggle .material-icons-outlined{font-size:18px}.toolset{gap:6px}.tool{width:36px;height:36px}.palette{gap:6px}.swatch{width:28px;height:28px}.color-controls{gap:6px}#colorPicker,#saveColor{width:36px;height:36px}}@media (max-width: 768px){.device-selection-content{padding:24px;max-width:90%}.device-options{flex-direction:column;gap:16px}.device-option{min-width:unset;max-width:unset;padding:24px 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