:root{--primary:#4f46e5;--primary-dark:#4338ca;--primary-light:#818cf8;--secondary:#7c3aed;--bg-dark:#f8fafc;--bg-card:#fff;--bg-input:#f1f5f9;--text-primary:#0f172a;--text-secondary:#64748b;--border:#e2e8f0;--success:#10b981}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-dark);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;overflow:hidden}.app-container{background:var(--border);grid-template-columns:320px 1fr 300px;gap:1px;height:100vh;display:grid}.sidebar{background:var(--bg-card);padding:1.5rem;overflow-y:auto}.sidebar::-webkit-scrollbar{width:8px}.sidebar::-webkit-scrollbar-track{background:var(--bg-input)}.sidebar::-webkit-scrollbar-thumb{background:var(--primary);border-radius:4px}h1{background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:.5rem;font-size:1.5rem}.subtitle{color:var(--text-secondary);margin-bottom:1.5rem;font-size:.875rem;line-height:1.4}.section{margin-bottom:2rem}.section-title{border-bottom:2px solid var(--primary);margin-bottom:1rem;padding-bottom:.5rem;font-size:1rem;font-weight:600}.control-group{margin-bottom:1.25rem}label{color:var(--text-primary);margin-bottom:.5rem;font-size:.875rem;font-weight:500;display:block}input[type=file]{display:none}.btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;padding:.75rem 1rem;font-size:.875rem;font-weight:600;transition:all .2s}.btn:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #6366f166}.btn-secondary{background:var(--bg-input);color:var(--text-secondary);margin-top:.5rem}.btn-secondary:hover{background:var(--border);box-shadow:none}input[type=range]{background:var(--bg-input);-webkit-appearance:none;border-radius:3px;outline:none;width:100%;height:6px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;background:var(--primary);cursor:pointer;border-radius:50%;width:18px;height:18px;transition:all .2s}input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2);box-shadow:0 0 0 4px #6366f133}input[type=range]::-moz-range-thumb{background:var(--primary);cursor:pointer;border:none;border-radius:50%;width:18px;height:18px}input[type=number]{background:var(--bg-input);border:1px solid var(--border);width:100%;color:var(--text-primary);border-radius:6px;padding:.5rem;font-size:.875rem}select{background:var(--bg-input);border:1px solid var(--border);width:100%;color:var(--text-primary);cursor:pointer;border-radius:6px;padding:.5rem;font-size:.875rem}.range-value{justify-content:space-between;align-items:center;margin-bottom:.5rem;display:flex}.value-display{color:var(--primary);font-size:.875rem;font-weight:600}.checkbox-group{flex-direction:column;gap:.5rem;display:flex}.checkbox-label{cursor:pointer;border-radius:6px;align-items:center;gap:.5rem;padding:.5rem;transition:background .2s;display:flex}.checkbox-label:hover{background:var(--bg-input)}input[type=checkbox]{cursor:pointer;width:18px;height:18px;accent-color:var(--primary)}.canvas-area{background:var(--bg-dark);cursor:grab;position:relative;overflow:hidden}.canvas-area.grabbing{cursor:grabbing}.viewport{transform-origin:50%;transition:transform .1s ease-out;position:absolute;top:50%;left:50%}.preview-stack{display:inline-block;position:relative}.preview-layer{pointer-events:none;max-width:none;display:block}#imgPreview{z-index:1;position:relative}#svgPreview{z-index:2;position:absolute;top:0;left:0}#svgPreview svg{display:block}.preview-stack:not(.compare-active) #imgPreview{display:none!important}.preview-stack.compare-active #imgPreview{display:block!important}.compare-divider{background:var(--primary);cursor:ew-resize;z-index:10;pointer-events:auto;width:1px;display:none;position:absolute;top:0;bottom:0;left:50%;box-shadow:0 0 10px #6366f180}.compare-divider:before{content:"";background:var(--primary);border:1px solid #fff;border-radius:50%;width:24px;height:24px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 4px 20px #6366f199}.compare-divider:after{content:"⟷";color:#fff;z-index:1;font-size:12px;font-weight:700;line-height:1;position:absolute;top:50%;left:50%;transform:translate(-50%,-68%)}.compare-divider.active{display:block}.toolbar{z-index:100;gap:.5rem;display:flex;position:absolute;top:1.5rem;right:1.5rem}.tool-btn{color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#1e293bf2;border:2px solid #0000;border-radius:10px;justify-content:center;align-items:center;width:44px;height:44px;font-size:1.25rem;transition:all .2s;display:flex}.tool-btn:hover{background:var(--primary);transform:scale(1.05)}.tool-btn.active{background:var(--primary);box-shadow:0 0 0 2px var(--primary);border-color:#fff}.slider-control{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:100;background:#1e293bf2;border-radius:12px;align-items:center;gap:1rem;min-width:400px;padding:1rem 2rem;display:none;position:absolute;bottom:2rem;left:50%;transform:translate(-50%);box-shadow:0 4px 20px #0000004d}.slider-control.active{display:flex}.slider-label{color:var(--text-secondary);white-space:nowrap;font-size:.875rem;font-weight:600}.slider-wrapper{flex:1;position:relative}.compare-slider{background:linear-gradient(90deg,#fff3 0%,#6366f180 50%,#8b5cf680 100%);border-radius:4px;width:100%;height:8px}.compare-slider::-webkit-slider-thumb{border:3px solid var(--primary);background:#fff;width:24px;height:24px;box-shadow:0 2px 8px #0000004d}.compare-slider::-moz-range-thumb{border:3px solid var(--primary);background:#fff;width:24px;height:24px;box-shadow:0 2px 8px #0000004d}.slider-value{color:var(--primary);text-align:right;min-width:60px;font-size:.875rem;font-weight:600}.slider-labels{color:var(--text-secondary);justify-content:space-between;margin-top:.5rem;font-size:.75rem;display:flex}.zoom-info{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:var(--primary);z-index:100;background:#1e293bf2;border-radius:10px;padding:.75rem 1.5rem;font-size:.875rem;font-weight:600;display:none;position:absolute;bottom:6rem;left:50%;transform:translate(-50%)}.zoom-info.show{display:block}.loading-overlay{z-index:200;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#0f172ae6;justify-content:center;align-items:center;display:none;position:absolute;inset:0}.loading-overlay.active{display:flex}.spinner{border:4px solid var(--bg-input);border-top-color:var(--primary);border-radius:50%;width:50px;height:50px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.info-panel{background:var(--bg-card);padding:1.5rem;overflow-y:auto}.info-section{margin-bottom:1.5rem}.info-title{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.75rem;font-size:.875rem;font-weight:600}.stat-grid{gap:.75rem;display:grid}.stat-item{background:var(--bg-input);border-radius:8px;justify-content:space-between;align-items:center;padding:.75rem;display:flex}.stat-label{color:var(--text-secondary);font-size:.875rem}.stat-value{color:var(--primary);font-weight:600}textarea{background:var(--bg-input);border:1px solid var(--border);width:100%;min-height:150px;color:var(--text-primary);resize:vertical;border-radius:8px;padding:.75rem;font-family:Courier New,monospace;font-size:.75rem}.action-buttons{gap:.5rem;margin-top:.75rem;display:grid}.btn-small{padding:.5rem;font-size:.75rem}.upload-zone{border:2px dashed var(--border);text-align:center;cursor:pointer;background:var(--bg-input);border-radius:12px;padding:2rem;transition:all .3s}.upload-zone:hover{border-color:var(--primary);background:#6366f11a}.upload-zone.dragover{border-color:var(--primary);background:#6366f133}.upload-icon{opacity:.5;margin-bottom:1rem;font-size:3rem}.notification{background:var(--success);color:#fff;z-index:1000;border-radius:10px;padding:1rem 1.5rem;animation:.3s slideIn;position:fixed;top:2rem;right:2rem;box-shadow:0 4px 12px #0000004d}@keyframes slideIn{0%{opacity:0;transform:translate(400px)}to{opacity:1;transform:translate(0)}}@media (max-width:1200px){.app-container{grid-template-columns:280px 1fr}.info-panel{display:none}.slider-control{min-width:300px}}