*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}[hidden]{display:none!important}:root{--bg: #f8f5f1;--surface: #ffffff;--border: #e2dcd5;--accent: #b5707a;--accent-dark: #8f4d57;--accent-lt: #f0dde0;--text: #3a3028;--text-muted: #8a7e76;--success: #5a8a5a;--radius: 10px;--shadow: 0 2px 12px rgba(0,0,0,.08);--shadow-lg: 0 4px 24px rgba(0,0,0,.12);--font: "Segoe UI", system-ui, -apple-system, sans-serif}body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5}.app-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.header-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px}.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.1rem;color:var(--accent-dark);letter-spacing:-.01em;flex-shrink:0;background:none;border:none;padding:0;cursor:pointer;font-family:var(--font);transition:opacity .15s}.logo:hover{opacity:.75}.logo-icon{font-size:1.4rem;color:var(--accent)}.step-nav{display:flex;align-items:center;gap:0}.step-item{display:flex;align-items:center;gap:8px;padding:6px 12px;border-radius:20px;cursor:pointer;transition:background .15s;-webkit-user-select:none;user-select:none}.step-item.pending{opacity:.45;cursor:default;pointer-events:none}.step-item.active .step-num{background:var(--accent);color:#fff}.step-item.completed .step-num{background:var(--success);color:#fff}.step-num{width:26px;height:26px;border-radius:50%;background:var(--border);color:var(--text-muted);font-size:.8rem;font-weight:700;display:flex;align-items:center;justify-content:center;transition:background .2s,color .2s}.step-label{font-size:.85rem;font-weight:600;color:var(--text-muted)}.step-item.active .step-label,.step-item.completed .step-label{color:var(--text)}.step-divider{width:24px;height:1px;background:var(--border);flex-shrink:0}.app-main{max-width:1200px;margin:0 auto;padding:32px 24px 64px}.step-container{display:flex;flex-direction:column;gap:28px}.step-title{font-size:1.6rem;font-weight:800;letter-spacing:-.02em;color:var(--text);line-height:1.2}.step-subtitle{font-size:1rem;color:var(--text-muted);margin-top:-20px}.section-title{font-size:.95rem;font-weight:700;margin-bottom:12px;color:var(--text)}.hint{font-weight:400;color:var(--text-muted);font-size:.85rem}.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;border-radius:8px;border:none;font-family:var(--font);font-size:.9rem;font-weight:600;cursor:pointer;transition:background .15s,transform .1s,opacity .15s;text-decoration:none}.btn:active{transform:scale(.97)}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-dark)}.btn-primary:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}.btn-secondary{background:var(--surface);color:var(--text);border:1.5px solid var(--border)}.btn-secondary:hover{background:var(--bg)}.btn-ghost{background:transparent;color:var(--text-muted);border:none;padding:8px 12px;font-size:.82rem}.btn-ghost:hover{color:var(--text);background:var(--bg)}.btn-icon{width:32px;height:32px;border-radius:6px;border:1.5px solid var(--border);background:var(--surface);cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:background .15s;color:var(--text)}.btn-icon:hover{background:var(--bg)}.btn-icon:disabled{opacity:.35;cursor:not-allowed}.step-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px;padding-top:8px;border-top:1px solid var(--border)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.hidden{display:none!important}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);background:var(--surface);min-height:240px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:border-color .15s,background .15s;position:relative;overflow:hidden}.upload-zone:hover,.upload-zone:focus{border-color:var(--accent);background:#fdf9fa;outline:none}.upload-zone.drag-over{border-color:var(--accent);background:var(--accent-lt)}.upload-zone-inner{display:flex;flex-direction:column;align-items:center;gap:8px;padding:32px;text-align:center}.upload-icon{font-size:2.8rem;color:var(--accent);line-height:1;margin-bottom:4px}.upload-prompt{font-size:1.05rem;font-weight:600;color:var(--text)}.upload-or{color:var(--text-muted);font-size:.85rem}.upload-hint{font-size:.78rem;color:var(--text-muted);margin-top:6px}.upload-preview{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px}.upload-preview img{max-height:200px;max-width:100%;border-radius:6px;object-fit:contain;box-shadow:var(--shadow)}.preview-info{display:flex;align-items:center;gap:8px}.preview-filename{font-size:.82rem;color:var(--text-muted);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dimensions-section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}.palette-swatches{display:flex;flex-wrap:wrap;gap:4px;min-height:24px;margin-top:6px}.palette-swatch{display:inline-block;width:22px;height:22px;border-radius:50%;border:1.5px solid rgba(0,0,0,.12);cursor:pointer;flex-shrink:0;transition:transform .12s,box-shadow .12s}.palette-swatch:hover{transform:scale(1.2);box-shadow:0 2px 8px #0003}.palette-swatch.overridden{box-shadow:0 0 0 2.5px var(--accent)}.swatch-picker-popover{position:fixed;z-index:9999;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:8px 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var(--border);border-radius:var(--radius);flex-wrap:wrap}.paint-palette-label{font-size:.78rem;font-weight:600;color:var(--text-muted);white-space:nowrap}.paint-palette-swatches{display:flex;flex-wrap:wrap;gap:5px;flex:1}.paint-swatch{display:inline-block;width:26px;height:26px;border-radius:50%;border:2px solid rgba(0,0,0,.1);cursor:pointer;flex-shrink:0;transition:transform .1s,box-shadow .1s}.paint-swatch:hover{transform:scale(1.15);box-shadow:0 2px 8px #00000038}.paint-swatch.selected{border-color:transparent;box-shadow:0 0 0 3px var(--accent);transform:scale(1.1)}.paint-change-count{font-size:.75rem;color:var(--text-muted);white-space:nowrap;font-variant-numeric:tabular-nums}.eraser-btn{display:inline-flex;align-items:center;gap:4px;padding:4px 12px;border-radius:20px;border:1.5px dashed var(--border);background:none;color:var(--text-muted);font-size:.78rem;font-weight:600;font-family:var(--font);cursor:pointer;white-space:nowrap;flex-shrink:0;transition:background .12s,color 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input[type=number]{width:90px;padding:8px 10px;border:1.5px solid var(--border);border-radius:6px;font-family:var(--font);font-size:1rem;font-weight:600;color:var(--text);background:var(--bg);transition:border-color .15s}.input-group input[type=number]:focus{outline:none;border-color:var(--accent)}.input-unit{font-size:.78rem;color:var(--text-muted);align-self:flex-end;margin-bottom:9px}.lock-btn{background:none;border:1.5px solid var(--border);border-radius:6px;width:38px;height:38px;cursor:pointer;font-size:1.1rem;display:flex;align-items:center;justify-content:center;transition:border-color .15s,background .15s;margin-bottom:2px}.lock-btn:hover,.lock-btn.active{border-color:var(--accent);background:var(--accent-lt)}.stitch-count{font-size:.82rem;color:var(--text-muted);margin-top:12px}.stitch-count strong{color:var(--text)}.suggestion-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:12px}.suggestion-title{font-size:.85rem;font-weight:600;color:var(--text);display:flex;align-items:center;gap:8px}.ratio-badge{display:inline-block;padding:2px 8px;background:var(--accent-lt);color:var(--accent-dark);border-radius:20px;font-size:.75rem;font-weight:700;font-family:monospace}.count-selector{display:flex;align-items:center;gap:6px}.count-label{font-size:.78rem;color:var(--text-muted)}.count-btn{padding:4px 10px;border-radius:16px;border:1.5px solid var(--border);background:var(--surface);font-size:.78rem;font-weight:600;cursor:pointer;color:var(--text-muted);transition:all .15s;font-family:var(--font)}.count-btn:hover{border-color:var(--accent);color:var(--accent)}.count-btn.active{background:var(--accent-lt);border-color:var(--accent);color:var(--accent-dark)}.suggestion-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px;margin-bottom:10px}.suggestion-card{display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 8px;border:1.5px solid var(--border);border-radius:8px;background:var(--surface);cursor:pointer;transition:all 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700px){.preview-panels{grid-template-columns:1fr}}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.panel-label{padding:8px 14px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.grid-size-editor{display:flex;align-items:center;gap:4px}.grid-dim-input{width:48px;padding:2px 4px;border:1.5px solid var(--border);border-radius:4px;font-family:monospace;font-size:.78rem;font-weight:700;color:var(--accent-dark);background:var(--bg);text-align:center;-moz-appearance:textfield}.grid-dim-input::-webkit-inner-spin-button,.grid-dim-input::-webkit-outer-spin-button{-webkit-appearance:none}.grid-dim-input:focus{outline:none;border-color:var(--accent)}.grid-dim-sep{font-size:.75rem;color:var(--text-muted)}.grid-dim-unit{font-size:.72rem;color:var(--text-muted);text-transform:none;letter-spacing:0}.original-panel img{width:100%;height:260px;object-fit:contain;display:block;background:var(--bg);padding:8px}.canvas-wrapper{position:relative;background:var(--bg);min-height:200px;display:flex;align-items:center;justify-content:center;overflow:hidden}#previewCanvas{display:block;max-width:100%;image-rendering:pixelated;image-rendering:crisp-edges}.processing-overlay{display:none;position:absolute;top:0;right:0;bottom:0;left:0;background:#f8f5f1d9;flex-direction:column;align-items:center;justify-content:center;gap:10px;font-size:.85rem;color:var(--text-muted)}.processing-overlay.visible{display:flex}.spinner{width:28px;height:28px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.controls-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:16px}.controls-grid{display:flex;flex-direction:column;gap:16px}.control-group{display:flex;flex-direction:column;gap:6px;padding-bottom:16px;border-bottom:1px solid var(--border)}.control-group:last-child{border-bottom:none;padding-bottom:0}.slider-label{display:flex;align-items:center;justify-content:space-between;font-size:.83rem;font-weight:600;color:var(--text)}.slider-value{font-variant-numeric:tabular-nums;font-weight:700;color:var(--accent-dark);min-width:28px;text-align:right}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:4px;border-radius:2px;background:var(--border);outline:none;cursor:pointer}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent);cursor:pointer;border:2px solid white;box-shadow:0 1px 4px #0003}input[type=range]:disabled{opacity:.35;cursor:not-allowed}.select-label{font-size:.83rem;font-weight:600;color:var(--text);display:block;margin-bottom:4px}select{width:100%;padding:7px 10px;border:1.5px solid var(--border);border-radius:6px;font-family:var(--font);font-size:.85rem;color:var(--text);background:var(--bg);cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238a7e76' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center}select:focus{outline:none;border-color:var(--accent)}.toggle-label{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:.83rem;font-weight:600;color:var(--text);cursor:pointer}.toggle-label.compact{gap:6px;font-size:.78rem}.toggle-switch{position:relative;display:inline-block;width:38px;height:22px;flex-shrink:0}.toggle-switch.small{width:32px;height:18px}.toggle-switch input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--border);border-radius:22px;transition:background .2s;cursor:pointer}.toggle-slider:before{content:"";position:absolute;left:3px;top:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:transform .2s;box-shadow:0 1px 3px #0003}.toggle-switch.small .toggle-slider:before{width:12px;height:12px;left:3px;top:3px}input:checked+.toggle-slider{background:var(--accent)}input:checked+.toggle-slider:before{transform:translate(16px)}.toggle-switch.small input:checked+.toggle-slider:before{transform:translate(14px)}.hint-text{font-size:.75rem;color:var(--text-muted);line-height:1.4}.controls-actions{display:flex;justify-content:flex-end}.pattern-header{display:flex;flex-direction:column;gap:4px}.pattern-header .step-subtitle{margin-top:0}.pattern-layout{display:grid;grid-template-columns:1fr 280px;gap:20px;align-items:start}@media (max-width: 900px){.pattern-layout{grid-template-columns:1fr}}.pattern-canvas-area{display:flex;flex-direction:column;gap:10px}.zoom-controls{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.zoom-controls #zoomLabel{font-size:.78rem;font-variant-numeric:tabular-nums;color:var(--text-muted);min-width:28px;text-align:center}.canvas-scroll-wrapper{overflow:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);max-height:600px}#patternCanvas,#paintCanvas{display:block;image-rendering:pixelated;image-rendering:crisp-edges}.legend-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.legend-title{padding:12px 16px;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);border-bottom:1px solid var(--border)}.legend-list{overflow-y:auto;max-height:560px}.legend-item{display:flex;align-items:center;gap:10px;padding:8px 16px;border-bottom:1px solid var(--border);transition:background .1s;cursor:default}.legend-item:last-child{border-bottom:none}.legend-item.active{background:var(--accent-lt)}.legend-swatch{width:20px;height:20px;border-radius:4px;flex-shrink:0;border:1px solid rgba(0,0,0,.1)}.legend-symbol{font-size:1rem;width:20px;text-align:center;flex-shrink:0}.legend-info{display:flex;flex-direction:column;gap:1px;min-width:0}.legend-dmc{font-size:.8rem;font-weight:700;color:var(--text)}.legend-name{font-size:.72rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.legend-count{font-size:.7rem;color:var(--text-muted)}.export-actions{justify-content:space-between;flex-wrap:wrap}.export-btns{display:flex;gap:10px}@media (max-width: 768px){.app-main{padding:24px 16px 48px}.step-container{gap:20px}.step-title{font-size:1.35rem}.original-panel img{height:200px}.legend-list{max-height:280px}.canvas-scroll-wrapper{max-height:420px}.export-btns{flex-wrap:wrap}}@media (max-width: 480px){.header-inner{padding:0 14px;gap:8px}.logo-text{font-size:1rem}.step-label{display:none}.step-item{padding:6px}.step-divider{width:12px}.app-main{padding:16px 12px 40px}.step-container{gap:16px}.step-title{font-size:1.2rem}.step-subtitle{font-size:.88rem;margin-top:-12px}.step-actions{flex-direction:column-reverse;align-items:stretch}.step-actions .btn{width:100%;justify-content:center;padding:13px 16px}.upload-zone{min-height:180px}.upload-zone-inner{padding:20px 14px;gap:6px}.upload-icon{font-size:2rem}.upload-prompt{font-size:.92rem}.upload-or,.upload-hint{display:none}.dimensions-section{padding:14px}.suggestion-header{flex-direction:column;align-items:flex-start;gap:8px}.count-btn{padding:6px 12px;font-size:.82rem}.suggestion-grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr))}.suggestion-card{padding:12px 8px}.dimension-inputs{gap:8px}.input-group input[type=number]{width:80px;font-size:1.05rem;padding:10px 8px}.lock-btn{width:44px;height:44px}.input-unit{display:none}.preset-btn{padding:8px 14px}.original-panel img{height:150px}.panel-label{flex-wrap:wrap;gap:4px;font-size:.7rem}.grid-dim-unit{display:none}input[type=range]::-webkit-slider-thumb{width:22px;height:22px}.controls-panel{padding:14px}.zoom-controls{gap:6px}.canvas-scroll-wrapper{max-height:340px}.legend-list{max-height:240px}.export-actions{flex-direction:column;align-items:stretch;gap:10px}.export-btns{flex-direction:column}.export-btns .btn,.export-actions>.btn{width:100%;justify-content:center;padding:13px 16px}}