:root{--bg-dark:#f5f5f7;--bg-surface:#fff;--bg-panel:#fff;--border-color:#0000001a;--text-primary:#1d1d1f;--text-secondary:#6e6e73;--accent:#0071e3;--font-main:"Segoe UI", "SF Pro Display", -apple-system, system-ui, sans-serif;--radius:8px;--radius-lg:12px}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-primary);font-family:var(--font-main);min-height:100vh;overflow:hidden}.app-container{background:var(--bg-dark);flex-direction:column;height:100vh;display:flex}.app-header{background:var(--bg-surface);border-bottom:1px solid var(--border-color);flex-shrink:0;align-items:center;height:48px;padding:0 16px;display:flex}.header-container{justify-content:space-between;align-items:center;width:100%;display:flex}.logo{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:8px;display:flex}.logo-icon{background:var(--accent);border-radius:4px;justify-content:center;align-items:center;width:24px;height:24px;display:flex}.logo-icon svg{fill:#fff;width:16px;height:16px}.logo-text{color:var(--text-primary);font-size:14px;font-weight:600}.logo-text span{color:var(--accent)}.main-content{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow:hidden}.work-container{background:var(--bg-panel);border:1px solid var(--border-color);border-radius:var(--radius-lg);flex-direction:column;flex:1;display:flex;overflow:hidden;box-shadow:0 1px 3px #0000000a}.upload-panel{flex:1;justify-content:center;align-items:center;padding:2rem;display:flex}.drop-zone{border:2px dashed var(--border-color);border-radius:var(--radius-lg);text-align:center;cursor:pointer;background:var(--bg-surface);padding:3rem 4rem;transition:all .2s}.drop-zone:hover,.drop-zone.dragover{border-color:var(--accent);background:#0071e305}.drop-zone h3{color:var(--text-primary);margin-bottom:.5rem;font-size:1rem;font-weight:500}.drop-zone p{color:var(--text-secondary);margin-bottom:1rem;font-size:.85rem}.upload-icon{color:var(--accent);margin-bottom:1rem}.btn{border-radius:var(--radius);font-family:var(--font-main);cursor:pointer;border:none;justify-content:center;align-items:center;gap:6px;padding:8px 16px;font-size:13px;font-weight:500;transition:all .15s;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:#0077ed}.btn-secondary{color:var(--text-primary);border:1px solid var(--border-color);background:#0000000d}.btn-secondary:hover:not(:disabled){background:#00000014}.btn-large{padding:12px 24px;font-size:14px}.editor-panel{flex-direction:column;flex:1;display:flex;overflow:hidden}.editor-layout{flex:1;display:flex;overflow:hidden}.canvas-container{border-radius:var(--radius);background:#f0f0f0;flex:1;justify-content:center;align-items:center;margin:12px;display:flex;position:relative;overflow:hidden}.canvas-wrapper{background-image:linear-gradient(45deg,#e0e0e0 25%,#0000 25%),linear-gradient(-45deg,#e0e0e0 25%,#0000 25%),linear-gradient(45deg,#0000 75%,#e0e0e0 75%),linear-gradient(-45deg,#0000 75%,#e0e0e0 75%);background-position:0 0,0 10px,10px -10px,-10px 0;background-size:20px 20px;position:relative}#image-canvas{max-width:100%;max-height:calc(100vh - 200px);display:block}#mask-canvas{cursor:crosshair;position:absolute;top:0;left:0}.controls-panel{background:var(--bg-surface);border-left:1px solid var(--border-color);flex-direction:column;gap:16px;width:240px;padding:16px;display:flex;overflow-y:auto}.control-title{color:var(--text-primary);margin-bottom:4px;font-size:13px;font-weight:600}.control-group{flex-direction:column;gap:8px;display:flex}.control-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-size:11px;font-weight:500}.brush-slider-wrapper{align-items:center;gap:12px;display:flex}.slider{-webkit-appearance:none;background:#0000001a;border-radius:2px;outline:none;flex:1;height:4px}.slider::-webkit-slider-thumb{-webkit-appearance:none;background:var(--accent);cursor:pointer;border-radius:50%;width:14px;height:14px}.brush-preview{background:#ef4444b3;border:1px solid #fff;border-radius:50%;width:16px;height:16px}.engine-selector{flex-direction:column;gap:6px;display:flex}.engine-opt{border:1px solid var(--border-color);border-radius:var(--radius);cursor:pointer;background:0 0;padding:10px 12px;transition:all .15s}.engine-opt:hover{border-color:#0071e366}.engine-opt.active{border-color:var(--accent);background:#0071e30d}.engine-title{margin-bottom:2px;font-size:12px;font-weight:500;display:block}.engine-opt.active .engine-title{color:var(--accent)}.engine-desc{color:var(--text-secondary);font-size:11px}.actions-row{gap:8px;display:flex}.actions-row .btn{flex:1}.spinner{border:2px solid #0000001a;border-top-color:var(--accent);border-radius:50%;width:14px;height:14px;animation:.8s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.btn-loader{align-items:center;gap:8px;display:flex}.result-panel{flex-direction:column;flex:1;display:flex;overflow:hidden}.result-layout{flex:1;display:flex;overflow:hidden}.slider-comparison{border-radius:var(--radius);-webkit-user-select:none;user-select:none;background:#f0f0f0;flex:1;margin:12px;position:relative;overflow:hidden}.comparison-img{width:100%;height:100%;position:absolute;top:0;left:0}.comparison-img img{object-fit:contain;width:100%;height:100%;display:block}.img-before{z-index:1}.img-after{z-index:2}.slider-bar{z-index:3;cursor:ew-resize;background:#fff;width:3px;position:absolute;top:0;bottom:0;left:50%;box-shadow:0 0 3px #0003}.slider-button{width:32px;height:32px;color:var(--accent);background:#fff;border-radius:50%;justify-content:center;align-items:center;display:flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 1px 3px #00000026}.result-controls{background:var(--bg-surface);border-left:1px solid var(--border-color);flex-direction:column;gap:12px;width:240px;padding:16px;display:flex;overflow-y:auto}.control-desc{color:var(--text-secondary);font-size:12px;line-height:1.4}.result-buttons{flex-direction:column;gap:8px;margin-top:auto;display:flex}.export-tiers{flex-direction:column;gap:6px;display:flex}.export-tier-card{border:1px solid var(--border-color);border-radius:var(--radius);cursor:pointer;background:0 0;justify-content:space-between;align-items:center;padding:10px 12px;transition:all .15s;display:flex}.export-tier-card:hover{border-color:#0003}.export-tier-card.active{border-color:var(--accent);background:#0071e30d}.export-tier-left{align-items:center;gap:8px;display:flex}.export-radio{border:2px solid var(--border-color);border-radius:50%;width:14px;height:14px}.export-tier-card.active .export-radio{border-color:var(--accent);background:var(--accent)}.export-tier-title{font-size:12px;font-weight:500;display:block}.export-tier-desc{color:var(--text-secondary);font-size:10px}.export-tier-badge{border-radius:4px;padding:2px 6px;font-size:10px;font-weight:600}.badge-free{color:#00c864;background:#00c8641a}.badge-premium{color:#ff9500;background:#ff95001a}.app-footer{background:var(--bg-surface);border-top:1px solid var(--border-color);height:28px;color:var(--text-secondary);flex-shrink:0;justify-content:space-between;align-items:center;padding:0 12px;font-size:11px;display:flex}.credits-badge{color:var(--text-secondary);align-items:center;gap:4px;font-size:11px;display:inline-flex}.modal-overlay{z-index:1000;background:#0006;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-container{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);width:400px;max-width:90vw;padding:24px;box-shadow:0 10px 40px #00000026}.modal-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.modal-title{font-size:16px;font-weight:600}.modal-close{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;padding:4px}.modal-body{flex-direction:column;gap:12px;display:flex}.paywall-message{color:#b35900;border-radius:var(--radius);text-align:center;background:#ff95001a;border:1px solid #ff950033;padding:12px;font-size:13px}.paywall-options{flex-direction:column;gap:8px;display:flex}.paywall-card{border:1px solid var(--border-color);border-radius:var(--radius);cursor:pointer;background:0 0;padding:14px;transition:all .15s}.paywall-card:hover{border-color:#0071e366}.paywall-card.selected{border-color:var(--accent);background:#0071e30d}.paywall-card-header{justify-content:space-between;align-items:center;margin-bottom:4px;display:flex}.paywall-card-title{font-size:13px;font-weight:600}.paywall-card-badge{color:#fff;background:#ff9500;border-radius:4px;padding:2px 6px;font-size:10px}.paywall-card-desc{color:var(--text-secondary);margin-bottom:6px;font-size:11px}.paywall-card-price{font-size:16px;font-weight:700}.paywall-card-price span{color:var(--text-secondary);font-size:12px;font-weight:400}.checkout-form{flex-direction:column;gap:12px;margin-top:8px;display:flex}.input-group{flex-direction:column;gap:4px;display:flex}.input-label{color:var(--text-secondary);font-size:11px;font-weight:500}.form-input{border:1px solid var(--border-color);border-radius:var(--radius);color:var(--text-primary);font-family:var(--font-main);background:#00000005;outline:none;padding:10px 12px;font-size:13px}.form-input:focus{border-color:var(--accent)}.form-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}@media (width<=768px){.editor-layout,.result-layout{flex-direction:column}.controls-panel,.result-controls{border-left:none;border-top:1px solid var(--border-color);width:100%}.canvas-container{min-height:300px}}.hidden{display:none!important}