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ease;width:36px;height:36px}.zoom-button:hover{background-color:var(--color-gray-100);border-color:var(--color-primary);color:var(--color-primary)}.zoom-button:active{transform:scale(.95)}.zoom-button:disabled{opacity:.5;cursor:not-allowed}.zoom-level{color:var(--color-text-secondary);font-family:var(--font-mono);font-size:var(--font-size-sm);min-width:50px;text-align:center}.preview-info{align-items:center;color:var(--color-text-secondary);display:flex;font-family:var(--font-mono);font-size:var(--font-size-sm);gap:var(--space-lg);justify-content:center}.controls-area{background-color:var(--color-surface);border-radius:var(--radius-xl);display:flex;flex-direction:column;gap:var(--space-lg);min-width:260px;padding:var(--space-xl)}.controls-title{color:var(--color-text-primary);font-size:var(--font-size-xl);font-weight:var(--font-weight-semibold);margin-bottom:0}.control-group{display:flex;flex-direction:column;gap:var(--space-sm)}.preset-thumbnails{display:flex;gap:var(--space-xs);overflow-x:auto;padding-bottom:var(--space-xs);scrollbar-color:var(--color-border) transparent;scrollbar-width:thin}.preset-thumbnails:empty{display:none}.preset-tile{align-items:center;background:var(--color-white);border:2px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;display:flex;flex-direction:column;flex-shrink:0;gap:3px;padding:3px;transition:border-color .15s,box-shadow .15s;width:82px}.preset-tile:hover{border-color:var(--color-primary-light);box-shadow:var(--shadow-md)}.preset-tile.active{border-color:var(--color-primary);box-shadow:0 0 0 2px var(--color-primary-light)}.preset-tile:disabled{cursor:not-allowed;opacity:.45;pointer-events:none}.preset-tile:focus-visible{border-color:var(--color-primary);outline:2px solid var(--color-primary);outline-offset:2px}.preset-thumb{background:var(--color-gray-100);border-radius:3px;display:block;height:72px;image-rendering:pixelated;width:72px}.preset-thumb.loading{animation:preset-shimmer 1.2s ease-in-out infinite;background:linear-gradient(90deg,var(--color-gray-100) 25%,var(--color-gray-200) 50%,var(--color-gray-100) 75%);background-size:200% 100%}@keyframes preset-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.preset-tile-name{color:var(--color-text-secondary);font-size:10px;line-height:1.2;overflow:hidden;text-align:center;text-overflow:ellipsis;white-space:nowrap;width:100%}#palette-control{transition:opacity .2s}#palette-control.palette-locked .control-hint:before{content:"🔒 "}.control-label{align-items:center;color:var(--color-text-primary);display:flex;font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);gap:var(--space-sm);justify-content:space-between}.control-value{color:var(--color-primary);font-family:var(--font-mono);font-weight:var(--font-weight-semibold)}.control-select{appearance:none;background-color:var(--color-white);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 9L1 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var(--color-white);border-radius:var(--radius-full);box-shadow:var(--shadow-md);cursor:pointer;height:20px;margin-top:-7px;transition:all var(--transition-fast);width:20px}.control-slider::-webkit-slider-thumb:hover{background-color:var(--color-primary-dark);transform:scale(1.1)}.control-slider::-moz-range-track{background-color:var(--color-gray-200);border-radius:var(--radius-full);height:6px}.control-slider::-moz-range-thumb{background-color:var(--color-primary);border:2px solid var(--color-white);border-radius:var(--radius-full);box-shadow:var(--shadow-md);cursor:pointer;height:20px;transition:all var(--transition-fast);width:20px}.control-slider::-moz-range-thumb:hover{background-color:var(--color-primary-dark);transform:scale(1.1)}.control-checkbox-label{align-items:center;cursor:pointer;display:flex;font-size:var(--font-size-sm);gap:var(--space-sm)}.control-checkbox{accent-color:var(--color-primary);cursor:pointer;height:18px;width:18px}.control-hint{color:var(--color-text-secondary);font-size:var(--font-size-xs);line-height:var(--line-height-normal)}.control-actions{border-top:1px solid var(--color-border);display:flex;gap:var(--space-sm);margin-top:var(--space-md);padding-top:var(--space-lg)}.button{align-items:center;border:none;border-radius:var(--radius-md);cursor:pointer;display:inline-flex;font-family:var(--font-sans);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);gap:var(--space-sm);justify-content:center;padding:var(--space-sm) var(--space-lg);transition:all var(--transition-fast);white-space:nowrap}.button:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.button-primary{background-color:var(--color-primary);color:var(--color-white)}.button-primary:hover{background-color:var(--color-primary-dark);transform:translateY(-1px)}.button-primary:active{transform:translateY(0)}.button-secondary{background-color:var(--color-white);border:1px solid var(--color-border);color:var(--color-text-primary)}.button-secondary:hover{background-color:var(--color-gray-50);border-color:var(--color-primary)}.button-large{font-size:var(--font-size-base);padding:var(--space-md) var(--space-2xl)}button#copy-clipboard-button{padding:8px 30px;width:35%;@media (max-width: 768px){width:50%}}.download-tools{display:flex;align-items:center;justify-content:center}.download-section{margin-bottom:var(--space-3xl)}.download-controls{display:grid;gap:var(--space-lg);grid-template-columns:1fr;margin-bottom:var(--space-xl);max-width:500px;.control-group{width:150px}}@media (min-width: 640px){.download-controls{grid-template-columns:1fr 1fr}}@media (max-width: 768px){.download-tools{flex-wrap:wrap;.download-controls,.download-buttons{flex-basis:100%}}.download-controls{.control-group{margin:15px auto}}.download-buttons{>div{display:flex;flex-basis:100%!important;justify-content:center;button{margin:0 auto;width:50%!important}}}}#download-button{margin:0}.sample-gallery{padding:var(--space-3xl) 0;margin-top:var(--space-3xl)}.sample-gallery .section-title{text-align:center;margin-bottom:var(--space-sm)}.sample-gallery .section-description{color:var(--color-text-secondary);font-size:var(--font-size-base);line-height:var(--line-height-relaxed);margin:0 auto var(--space-2xl);max-width:720px;text-align:center}.gallery-grid{columns:3;column-gap:var(--space-lg);margin:0 auto}.gallery-item{width:100%;margin-bottom:var(--space-lg);break-inside:avoid;overflow:hidden;border-radius:var(--radius-lg);background-color:var(--color-white);box-shadow:var(--shadow-md);transition:all .3s cubic-bezier(.4,0,.2,1);cursor:pointer;@media (max-width: 768px){margin:25px auto;width:80%}figcaption{margin:.5rem auto;text-align:center;font-size:.875rem;color:#64748b}}.gallery-item:hover{transform:translateY(-8px) scale(1.02);box-shadow:var(--shadow-xl)}.gallery-image{width:100%;height:auto;display:block}.site-footer{background-color:var(--color-gray-50);border-top:1px solid var(--color-border);color:var(--color-text-secondary);padding:var(--space-2xl) 0;text-align:center}.footer-privacy{color:var(--color-text-primary);font-size:var(--font-size-sm);margin-bottom:var(--space-xl);text-align:center}.footer-privacy strong{color:var(--color-text-primary);font-weight:var(--font-weight-semibold)}.footer-columns{display:flex;gap:var(--space-2xl);align-items:flex-start;justify-content:space-between;p{flex-basis:45%;text-align:left}@media (max-width: 768px){p{margin:0 auto;text-align:center;width:85%}}}.footer-description{color:var(--color-text-secondary);flex:1;font-size:var(--font-size-sm);line-height:var(--line-height-relaxed);margin:0;text-align:left}.footer-copyright{color:var(--color-gray-500);flex-shrink:0;font-size:.75rem;margin:2.5rem 0 0;min-width:300px;text-align:center;.footer-heart{color:var(--color-primary-light)}}.footer-copyright small{display:block}@media (max-width: 768px){.footer-columns{flex-direction:column;gap:var(--space-lg);text-align:center}.footer-description,.footer-copyright{text-align:center;min-width:unset}}.notification-container{bottom:var(--space-lg);display:flex;flex-direction:column;gap:var(--space-sm);max-width:400px;position:fixed;right:var(--space-lg);z-index:var(--z-notification)}.notification{animation:slideIn .3s ease-out;background-color:var(--color-white);border-left:4px solid;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);display:flex;gap:var(--space-md);padding:var(--space-md)}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes slideOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(100%)}}.notification-icon{flex-shrink:0}.notification-content{flex:1}.notification-message{color:var(--color-text-primary);font-size:var(--font-size-sm);margin-bottom:0}.notification-close{align-items:center;background:transparent;border:none;color:var(--color-text-secondary);cursor:pointer;display:flex;flex-shrink:0;padding:var(--space-xs);transition:color var(--transition-fast)}.notification-close:hover{color:var(--color-text-primary)}.notification-action{align-items:center;background:var(--color-primary);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;display:flex;flex-shrink:0;font-family:inherit;font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);padding:var(--space-xs) var(--space-sm);transition:background-color var(--transition-fast);white-space:nowrap}.notification-action:hover{background:var(--color-primary-dark)}.notification.success{border-left-color:var(--color-success)}.notification.error{border-left-color:var(--color-error)}.notification.warning{border-left-color:var(--color-warning)}.notification.info{border-left-color:var(--color-primary)}.hidden{display:none!important}.sr-only{border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;white-space:nowrap;width:1px}@media (max-width: 640px){:root{font-size:14px}.container{padding-left:var(--space-md);padding-right:var(--space-md)}.site-description{font-size:18px;margin:40px auto 20px;padding:var(--space-sm) var(--space-md)}.section-description{font-size:12px;margin:10px auto;max-width:85%;padding:0 var(--space-md)}.control-actions{flex-direction:column}.button{width:100%}.gallery-grid{columns:1}}@media (min-width: 641px) and (max-width: 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article{background:transparent;line-height:var(--line-height-relaxed);margin:0 auto;max-width:900px;position:relative;z-index:1}div.border-section{border:1px solid var(--color-border);border-radius:var(--radius-2xl);box-shadow:var(--shadow-lg);margin:0 auto;max-width:900px;padding:var(--space-3xl);position:relative;@media (max-width: 768px){padding:25px}h3{margin-top:0}}div.border-section:before{content:"";position:absolute;inset:-1px;border-radius:var(--radius-2xl);background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-secondary) 100%);opacity:.05;pointer-events:none;z-index:-1}.break-out-section{margin:0 auto;max-width:900px;padding:var(--space-3xl);position:relative;@media (max-width: 768px){margin:25px auto;padding:25px}h3{margin-top:0}}.content-section h2{color:var(--color-primary-dark);font-size:var(--font-size-3xl);font-weight:var(--font-weight-bold);line-height:var(--line-height-tight);margin-bottom:var(--space-xl);position:relative;text-align:center}.content-section h2:after{content:"";position:absolute;bottom:-12px;left:50%;transform:translate(-50%);width:80px;height:3px;background:linear-gradient(90deg,transparent,var(--color-primary),transparent);border-radius:var(--radius-full)}.content-section h3{color:var(--color-text-primary);font-size:var(--font-size-2xl);font-weight:var(--font-weight-semibold);line-height:var(--line-height-tight);margin-bottom:var(--space-md);padding-bottom:var(--space-sm);border-bottom:1px solid var(--color-border)}.content-section h4{background:linear-gradient(135deg,var(--color-primary-light) 0%,var(--color-primary) 100%);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent;color:var(--color-primary);font-size:var(--font-size-xl);font-weight:var(--font-weight-semibold);line-height:var(--line-height-tight);margin-bottom:var(--space-sm);margin-top:var(--space-xl)}.content-section p{color:var(--color-text-secondary);font-size:var(--font-size-base);line-height:var(--line-height-relaxed);margin-bottom:var(--space-lg)}.content-section ul,.content-section ol{background:var(--color-surface);border-radius:var(--radius-md);color:var(--color-text-secondary);line-height:var(--line-height-relaxed);padding:var(--space-lg) var(--space-lg) var(--space-lg) var(--space-2xl);@media (max-width: 768px){margin-bottom:0}}.content-section li{margin-bottom:var(--space-sm)}.content-section li::marker{color:var(--color-primary)}.content-section strong{color:var(--color-text-primary);font-weight:var(--font-weight-semibold)}.content-section ul li strong{color:var(--color-primary)}.content-section code{background:var(--color-gray-100);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-primary-dark);font-family:var(--font-mono);font-size:.9em;padding:.2em .4em}@media (max-width: 640px){.content-section{padding:var(--space-xl) var(--space-md)}.content-section article{padding:var(--space-xl) var(--space-lg)}.content-section h2{font-size:var(--font-size-2xl)}.content-section h2:after{width:60px}.content-section h3{font-size:var(--font-size-xl)}.content-section h4{font-size:var(--font-size-lg)}.content-section ul,.content-section ol{padding:var(--space-md) var(--space-md) var(--space-md) var(--space-xl)}}@media print{.upload-section,.controls-area,.download-section,.site-footer,.notification-container{display:none}.editor-section,.content-section{page-break-inside:avoid}}:root{--color-canvas-surface: #f1f2f4;--shadow-inset-soft: inset 0 1px 3px rgba(17, 24, 39, .05);--gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%)}.sr-only{clip:rect(0,0,0,0);clip-path:inset(50%);height:1px;overflow:hidden;position:absolute;white-space:nowrap;width:1px}.editor-shell{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-2xl);box-shadow:var(--shadow-lg);display:grid;gap:var(--space-md);grid-template-areas:"toolbar" "body" "footer";grid-template-columns:minmax(0,1fr);grid-template-rows:auto 1fr auto;margin-bottom:var(--space-3xl);overflow-x:hidden;padding:var(--space-md)}.editor-body{display:grid;gap:var(--space-md);grid-area:body;grid-template-columns:minmax(0,1fr) 360px;min-height:540px}.editor-toolbar{align-items:center;background:var(--color-background);border:1px solid var(--color-border);border-radius:var(--radius-lg);display:flex;gap:var(--space-sm);grid-area:toolbar;min-height:52px;padding:0 var(--space-md)}.toolbar-left{align-items:center;display:flex;flex:1;gap:var(--space-sm);min-width:0}.toolbar-file-info{align-items:center;color:var(--color-text-secondary);display:flex;font-family:var(--font-mono);font-size:var(--font-size-xs);gap:6px;min-width:0;overflow:hidden}.toolbar-filename{color:var(--color-text-primary);font-weight:var(--font-weight-medium);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.toolbar-dims{color:var(--color-text-secondary);flex-shrink:0;white-space:nowrap}.toolbar-sep{color:var(--color-gray-300);flex-shrink:0}.toolbar-center{flex-shrink:0}.toolbar-right{align-items:center;display:flex;flex-shrink:0;gap:3px}.toolbar-sep-v{background:var(--color-border);flex-shrink:0;height:20px;margin:0 4px;width:1px}.btn-autotune{align-items:center;background:var(--gradient-primary);border:none;border-radius:var(--radius-md);box-shadow:0 1px 4px #6366f166;color:var(--color-white);cursor:pointer;display:flex;font-family:var(--font-sans);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);gap:6px;padding:8px var(--space-md);transition:filter var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);white-space:nowrap}.btn-autotune:hover:not(:disabled){box-shadow:0 3px 10px #6366f180;filter:brightness(1.06);transform:translateY(-1px)}.btn-autotune:active:not(:disabled){transform:translateY(0)}.btn-autotune:disabled{box-shadow:none;cursor:not-allowed;opacity:.5}.btn-autotune:focus-visible{outline:2px solid var(--color-white);outline-offset:2px;box-shadow:0 0 0 4px #6366f180}.toolbar-btn{align-items:center;background:transparent;border:none;border-radius:var(--radius-md);color:var(--color-text-secondary);cursor:pointer;display:flex;font-family:var(--font-sans);font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);gap:4px;min-height:32px;min-width:32px;padding:6px 8px;transition:background var(--transition-fast),color var(--transition-fast)}.toolbar-btn:hover:not(:disabled){background:var(--color-gray-100);color:var(--color-text-primary)}.toolbar-btn:disabled{cursor:not-allowed;opacity:.38}.toolbar-btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.zoom-segmented{align-items:center;background:var(--color-gray-100);border-radius:var(--radius-md);display:flex;padding:2px}.zoom-segmented .toolbar-btn{border-radius:4px;min-width:28px;padding:4px 6px}.zoom-segmented .toolbar-btn:hover:not(:disabled){background:var(--color-background)}.zoom-level{color:var(--color-text-primary);font-family:var(--font-mono);font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);min-width:36px;padding:0 2px;text-align:center;white-space:nowrap}.canvas-stage{background:var(--color-canvas-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-inset-soft);display:flex;flex-direction:column;overflow:hidden}.canvas-stage .preview-container{align-items:center;background:transparent;border-radius:0;box-shadow:none;cursor:default;display:flex;flex:1;justify-content:center;min-height:400px;overflow:auto;position:relative}.canvas-stage .preview-container.zoomed{cursor:grab}.canvas-stage .preview-container.zoomed:active{cursor:grabbing}.stage-empty{align-items:center;color:var(--color-gray-400);display:flex;flex-direction:column;gap:var(--space-md);padding:var(--space-3xl) var(--space-xl);pointer-events:none;text-align:center}.stage-empty-icon{color:var(--color-gray-300)}.stage-empty-text{font-size:var(--font-size-sm);margin:0}.preview-container.has-image .stage-empty{display:none}.stage-status{align-items:center;border-top:1px solid var(--color-border);color:var(--color-text-secondary);display:flex;flex-shrink:0;font-size:var(--font-size-xs);gap:var(--space-sm);min-height:32px;padding:0 var(--space-md)}.stage-status span{white-space:nowrap}.inspector{background:var(--color-background);border:1px solid var(--color-border);border-radius:var(--radius-xl);display:flex;flex-direction:column;overflow:hidden}.inspector-tabs{background:var(--color-gray-50);border-bottom:1px solid var(--color-border);display:flex;flex-shrink:0;gap:2px;padding:4px}.inspector-tab{align-items:center;background:transparent;border:none;border-radius:var(--radius-md);color:var(--color-text-secondary);cursor:pointer;display:flex;flex:1;font-family:var(--font-sans);font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);gap:5px;justify-content:center;padding:7px var(--space-xs);transition:background var(--transition-fast),color 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