:root{--bg-app: #0f1117;--bg-sidebar: #161922;--bg-panel: #1e2230;--bg-input: #12141c;--bg-hover: #262c3e;--border: #2a3044;--text-main: #f3f4f6;--text-muted: #9ca3af;--primary: #6d5efc;--primary-hover: #7f72fd;--accent: #ec4899;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--font-sans: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, monospace}[data-theme=light]{--bg-app: #f4f5f8;--bg-sidebar: #ffffff;--bg-panel: #f8fafc;--bg-input: #ffffff;--bg-hover: #e2e8f0;--border: #e2e8f0;--text-main: #0f172a;--text-muted: #64748b;--primary: #6366f1;--primary-hover: #4f46e5}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-app);color:var(--text-main);height:100vh;display:flex;flex-direction:column;overflow:hidden;-webkit-user-select:none;user-select:none}.topbar{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 16px;background-color:var(--bg-sidebar);border-bottom:1px solid var(--border);z-index:20}.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:-.3px}.brand-icon{width:28px;height:28px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:var(--radius-sm);display:grid;place-items:center;color:#fff}.tool-nav{display:flex;background-color:var(--bg-input);padding:3px;border-radius:var(--radius-md);border:1px solid var(--border);gap:2px}.tool-btn{display:flex;align-items:center;gap:6px;padding:6px 12px;font-size:13px;font-weight:500;color:var(--text-muted);background:transparent;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s ease}.tool-btn:hover{color:var(--text-main);background-color:var(--bg-hover)}.tool-btn.active{color:#fff;background-color:var(--primary);font-weight:600}.top-actions{display:flex;align-items:center;gap:8px}.btn-icon{width:34px;height:34px;display:grid;place-items:center;background-color:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-main);cursor:pointer;transition:all .15s ease}.btn-icon:hover:not(:disabled){background-color:var(--bg-hover);border-color:var(--primary)}.btn-icon:disabled{opacity:.35;cursor:not-allowed}.btn-primary{display:flex;align-items:center;gap:6px;height:34px;padding:0 14px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);font-size:13px;font-weight:600;cursor:pointer;transition:background .15s ease}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{display:flex;align-items:center;gap:6px;height:34px;padding:0 12px;background:var(--bg-input);color:var(--text-main);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s ease}.btn-secondary:hover{background:var(--bg-hover)}.workspace{display:flex;flex:1;overflow:hidden;position:relative}.stage{flex:1;display:flex;align-items:center;justify-content:center;overflow:auto;padding:30px;background-color:var(--bg-app);position:relative;background-image:radial-gradient(var(--border) 1px,transparent 1px);background-size:24px 24px}.annot-toolbar{position:absolute;top:16px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:4px;padding:4px 8px;background-color:var(--bg-sidebar);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:0 10px 25px #0006;z-index:10}.annot-btn{width:32px;height:32px;display:grid;place-items:center;background:transparent;border:1px solid transparent;border-radius:var(--radius-sm);color:var(--text-muted);font-size:13px;font-weight:600;cursor:pointer;transition:all .15s ease}.annot-btn:hover{background-color:var(--bg-hover);color:var(--text-main)}.annot-btn.active{background-color:var(--primary);color:#fff}.canvas-container{display:flex;align-items:center;justify-content:center;max-width:100%;max-height:100%;box-shadow:0 20px 40px #0006;border-radius:var(--radius-md);transition:transform .1s ease-out}#preview-canvas{max-width:100%;max-height:calc(100vh - 130px);object-fit:contain;border-radius:var(--radius-md)}.sidebar{width:380px;background-color:var(--bg-sidebar);border-left:1px solid var(--border);overflow-y:auto;display:flex;flex-direction:column}.sidebar::-webkit-scrollbar{width:6px}.sidebar::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.panel{border-bottom:1px solid var(--border)}.panel-head{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;font-size:13px;font-weight:600;cursor:pointer;background-color:var(--bg-sidebar);transition:background .15s ease}.panel-head:hover{background-color:var(--bg-panel)}.panel-head svg.chevron{transition:transform .2s ease}.panel.collapsed .panel-head svg.chevron{transform:rotate(-90deg)}.panel.collapsed .panel-body{display:none}.panel-body{padding:14px 16px;display:flex;flex-direction:column;gap:14px;background-color:var(--bg-sidebar)}.field{display:flex;flex-direction:column;gap:6px}.field-label{display:flex;justify-content:space-between;font-size:12px;font-weight:500;color:var(--text-muted)}.field-value{color:var(--text-main);font-family:var(--font-mono);font-size:11px}input[type=text],input[type=number],select,textarea{width:100%;background:var(--bg-input);border:1px solid var(--border);color:var(--text-main);padding:8px 10px;border-radius:var(--radius-sm);font-size:13px;font-family:inherit;outline:none;transition:border-color .15s ease}input[type=text]:focus,input[type=number]:focus,select:focus,textarea:focus{border-color:var(--primary)}input[type=range]{-webkit-appearance:none;width:100%;height:6px;background:var(--bg-input);border-radius:3px;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--primary);cursor:pointer;box-shadow:0 1px 4px #0006}.segmented{display:flex;background:var(--bg-input);padding:3px;border-radius:var(--radius-sm);border:1px solid var(--border);gap:2px}.seg-btn{flex:1;padding:6px;font-size:12px;font-weight:500;color:var(--text-muted);background:transparent;border:none;border-radius:4px;cursor:pointer;text-align:center;transition:all .15s ease}.seg-btn:hover{color:var(--text-main)}.seg-btn.active{color:#fff;background:var(--primary);font-weight:600}.icon-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.grid-btn{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 4px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-muted);font-size:11px;cursor:pointer;transition:all .15s ease}.grid-btn:hover{background:var(--bg-hover);color:var(--text-main)}.grid-btn.active{border-color:var(--primary);color:var(--primary);background:var(--bg-panel);font-weight:600}.swatches{display:flex;flex-wrap:wrap;gap:6px}.swatch{width:28px;height:28px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:transform .1s ease,border-color .15s ease}.swatch:hover{transform:scale(1.15)}.swatch.active{border-color:#fff;box-shadow:0 0 0 2px var(--primary)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:grid;place-items:center;z-index:100;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-overlay.hidden{display:none}.modal{width:90%;max-width:600px;background:var(--bg-sidebar);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;display:flex;flex-direction:column;gap:16px;box-shadow:0 25px 50px -12px #00000080}.modal-header{display:flex;align-items:center;justify-content:space-between;font-size:16px;font-weight:700}.modal-close{background:transparent;border:none;color:var(--text-muted);cursor:pointer}.modal-close:hover{color:var(--text-main)}