:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-primary-light: #dbeafe;--color-success: #10b981;--color-success-light: #d1fae5;--color-warning: #f59e0b;--color-warning-light: #fef3c7;--color-error: #ef4444;--color-error-light: #fee2e2;--color-bg: #ffffff;--color-bg-secondary: #f8fafc;--color-bg-tertiary: #f1f5f9;--color-text: #0f172a;--color-text-secondary: #475569;--color-text-muted: #94a3b8;--color-border: #e2e8f0;--color-border-hover: #cbd5e1;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: "SF Mono", Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.75rem;--leading-tight: 1.25;--leading-normal: 1.5;--leading-relaxed: 1.625;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--z-dropdown: 1000;--z-sticky: 1020;--z-modal: 1100;--z-tooltip: 1200;--safe-area-top: env(safe-area-inset-top, 0px);--safe-area-bottom: env(safe-area-inset-bottom, 0px);--safe-area-left: env(safe-area-inset-left, 0px);--safe-area-right: env(safe-area-inset-right, 0px);--touch-target: 44px}@media (prefers-color-scheme: dark){:root{--color-bg: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-text: #f8fafc;--color-text-secondary: #cbd5e1;--color-text-muted: #64748b;--color-border: #334155;--color-border-hover: #475569;--color-primary-light: #1e3a5f}}*,*:before,*:after{box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}body{margin:0;padding:0;font-family:var(--font-sans);font-size:var(--text-base);line-height:var(--leading-normal);color:var(--color-text);background:var(--color-bg);overflow-x:hidden;overscroll-behavior-y:contain}h1,h2,h3,h4,h5,h6{margin:0 0 var(--space-3);font-weight:600;line-height:var(--leading-tight)}h1{font-size:var(--text-2xl)}h2{font-size:var(--text-xl)}h3{font-size:var(--text-lg)}h4{font-size:var(--text-base)}p{margin:0 0 var(--space-3)}a{color:var(--color-primary);text-decoration:none;-webkit-touch-callout:none}a:hover,a:active{text-decoration:underline}img{max-width:100%;height:auto;display:block}#app{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh;padding-top:var(--safe-area-top);padding-bottom:var(--safe-area-bottom)}.app-header{display:flex;justify-content:space-between;align-items:center;padding:var(--space-3) var(--space-4);background:var(--color-bg);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:var(--z-sticky)}.logo{display:flex;align-items:center;gap:var(--space-2)}.logo-icon{flex-shrink:0;width:28px;height:28px}.logo-text{font-size:var(--text-lg);font-weight:700;color:var(--color-text)}.app-main{flex:1;overflow-y:auto;overflow-x:hidden;padding:var(--space-4);-webkit-overflow-scrolling:touch}.app-footer{display:flex;justify-content:space-between;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);padding-bottom:calc(var(--space-3) + var(--safe-area-bottom));background:var(--color-bg);border-top:1px solid var(--color-border);position:sticky;bottom:0;z-index:var(--z-sticky)}.app-footer .btn{flex:1;max-width:160px}.icon{width:1.25em;height:1.25em;vertical-align:middle;flex-shrink:0}.icon.spin{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.text-muted{color:var(--color-text-muted)}.text-secondary{color:var(--color-text-secondary)}.hide-mobile{display:none!important}.show-mobile{display:block!important}::-webkit-scrollbar{width:0;height:0}@media (min-width: 640px){h1{font-size:var(--text-2xl)}h2{font-size:var(--text-xl)}.app-header{padding:var(--space-3) var(--space-6)}.app-main{padding:var(--space-6)}.app-footer{padding:var(--space-4) var(--space-6)}.logo-icon{width:32px;height:32px}.logo-text{font-size:var(--text-xl)}}@media (min-width: 1024px){h1{font-size:var(--text-3xl)}h2{font-size:var(--text-2xl)}h3{font-size:var(--text-xl)}.hide-mobile{display:block!important}.show-mobile{display:none!important}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-border-hover)}}.step-indicator{padding:var(--space-2) var(--space-3);background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border);overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;scrollbar-width:none;-ms-overflow-style:none}.step-indicator::-webkit-scrollbar{display:none}.steps{display:flex;justify-content:flex-start;align-items:center;gap:var(--space-1);list-style:none;margin:0;padding:0;min-width:max-content}.step{display:flex;align-items:center;justify-content:center;gap:var(--space-1);min-height:var(--touch-target);min-width:var(--touch-target);padding:var(--space-2);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base);color:var(--color-text-muted);font-size:var(--text-sm);user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;position:relative}.step:active:not(.disabled){transform:scale(.95)}.step:hover:not(.disabled){color:var(--color-text-secondary);background:var(--color-bg-tertiary)}.step.active{color:var(--color-primary);background:var(--color-primary-light);font-weight:500}.step.completed{color:var(--color-success)}.step.disabled{opacity:.5;cursor:not-allowed}.step-number{display:flex;align-items:center;justify-content:center;width:1.75rem;height:1.75rem;border-radius:var(--radius-full);background:var(--color-bg-tertiary);font-size:var(--text-xs);font-weight:600;flex-shrink:0}.step.active .step-number{background:var(--color-primary);color:#fff}.step.completed .step-number{background:var(--color-success);color:#fff}.step.completed .step-number span{display:none}.step.completed .step-number:after{content:"✓"}.step-label{display:none}.step-badge{font-size:var(--text-xs);padding:2px var(--space-2);background:var(--color-warning);color:#fff;border-radius:var(--radius-full);font-weight:500;position:absolute;top:0;right:0;transform:translate(25%,-25%)}.step:not(:last-child):after{content:"";width:1rem;height:2px;background:var(--color-border);margin-left:var(--space-1);flex-shrink:0}.step.completed:not(:last-child):after{background:var(--color-success)}@media (min-width: 640px){.step-indicator{padding:var(--space-3) var(--space-4);overflow-x:visible}.steps{justify-content:center;gap:var(--space-1);min-width:auto}.step{padding:var(--space-2) var(--space-3);gap:var(--space-2)}.step-label{display:inline}.step:not(:last-child):after{width:1.5rem;margin-left:var(--space-2)}.step-badge{position:static;transform:none;margin-left:var(--space-1)}}@media (min-width: 768px){.step-indicator{padding:var(--space-3) var(--space-6)}.step{padding:var(--space-2) var(--space-4)}.step:not(:last-child):after{width:2rem}}@media (min-width: 1024px){.step:not(:last-child):after{width:3rem}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:var(--touch-target);padding:var(--space-3) var(--space-4);font-family:inherit;font-size:var(--text-base);font-weight:500;line-height:1.25;border-radius:var(--radius-lg);border:1px solid transparent;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent}.btn:active:not(:disabled){transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.btn-secondary{background:var(--color-bg);color:var(--color-text);border-color:var(--color-border)}.btn-secondary:hover:not(:disabled){background:var(--color-bg-secondary);border-color:var(--color-border-hover)}.btn-text{background:transparent;color:var(--color-primary);border:none;min-height:auto;padding:var(--space-2) var(--space-3)}.btn-text:hover:not(:disabled){background:var(--color-primary-light)}.btn-small{min-height:36px;padding:var(--space-2) var(--space-3);font-size:var(--text-sm)}.btn-large{min-height:52px;padding:var(--space-4) var(--space-6);font-size:var(--text-lg);border-radius:var(--radius-xl)}.btn-block{width:100%}input[type=text],input[type=password],input[type=email],input[type=number],input[type=search],textarea,select{width:100%;min-height:var(--touch-target);padding:var(--space-3) var(--space-4);font-family:inherit;font-size:var(--text-base);line-height:1.5;color:var(--color-text);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);-webkit-appearance:none;appearance:none}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}input::placeholder,textarea::placeholder{color:var(--color-text-muted)}textarea{resize:vertical;min-height:100px}select{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='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right var(--space-4) center;padding-right:var(--space-10)}.input-group{display:flex;flex-direction:column;gap:var(--space-2)}.input-group input{flex:1}label{display:block;margin-bottom:var(--space-2);font-size:var(--text-sm);font-weight:500;color:var(--color-text-secondary)}label .icon{margin-right:var(--space-1)}.help-text{margin-top:var(--space-2);font-size:var(--text-sm);color:var(--color-text-muted)}input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:8px;background:var(--color-bg-tertiary);border-radius:var(--radius-full);cursor:pointer;margin:var(--space-2) 0}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:24px;height:24px;background:var(--color-primary);border-radius:50%;cursor:pointer;transition:transform var(--transition-fast);box-shadow:var(--shadow-md);border:2px solid white}input[type=range]::-webkit-slider-thumb:active{transform:scale(1.15)}input[type=range]::-moz-range-thumb{width:24px;height:24px;background:var(--color-primary);border-radius:50%;cursor:pointer;border:2px solid white;box-shadow:var(--shadow-md)}.slider-control{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-2);margin-bottom:var(--space-4)}.slider-control label{flex:1;margin-bottom:0;min-width:80px}.slider-control input[type=range]{flex-basis:100%;order:3}.slider-value{font-size:var(--text-sm);color:var(--color-text-muted);min-width:3rem;text-align:right;font-variant-numeric:tabular-nums}input[type=color]{-webkit-appearance:none;appearance:none;width:var(--touch-target);height:var(--touch-target);padding:2px;border:2px solid var(--color-border);border-radius:var(--radius-lg);cursor:pointer;overflow:hidden;background:var(--color-bg)}input[type=color]::-webkit-color-swatch-wrapper{padding:0}input[type=color]::-webkit-color-swatch{border:none;border-radius:var(--radius-md)}.btn-toggle{display:flex;border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden;background:var(--color-bg)}.toggle-btn{flex:1;min-height:var(--touch-target);padding:var(--space-2) var(--space-3);font-family:inherit;font-size:var(--text-sm);font-weight:500;color:var(--color-text-secondary);background:var(--color-bg);border:none;cursor:pointer;transition:all var(--transition-fast);-webkit-tap-highlight-color:transparent}.toggle-btn:not(:last-child){border-right:1px solid var(--color-border)}.toggle-btn:active{background:var(--color-bg-tertiary)}.toggle-btn.active{background:var(--color-primary);color:#fff}.toggle-group{margin-bottom:var(--space-4)}.toggle-group label{display:block;margin-bottom:var(--space-2)}.color-swatch{width:40px;height:40px;border-radius:var(--radius-lg);border:2px solid var(--color-border);cursor:pointer;transition:transform var(--transition-fast),box-shadow var(--transition-fast);background-image:linear-gradient(45deg,#ccc 25%,transparent 25%),linear-gradient(-45deg,#ccc 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#ccc 75%),linear-gradient(-45deg,transparent 75%,#ccc 75%);background-size:10px 10px;background-position:0 0,0 5px,5px -5px,-5px 0px;flex-shrink:0}.color-swatch:active{transform:scale(.95)}.color-swatch.selected{border-color:var(--color-primary);box-shadow:0 0 0 2px var(--color-primary-light)}.color-palette{display:flex;flex-wrap:wrap;gap:var(--space-2)}.color-palette-section{margin-bottom:var(--space-4)}.color-palette-section h4{font-size:var(--text-sm);margin-bottom:var(--space-2)}.color-swap{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-3);margin-bottom:var(--space-4)}.color-swap .arrow{color:var(--color-text-muted);font-size:var(--text-xl)}.button-group{display:flex;flex-wrap:wrap;gap:var(--space-2)}.quick-actions{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-bottom:var(--space-4)}.quick-actions .btn{flex:1;min-width:fit-content}.settings-group{border:1px solid var(--color-border);border-radius:var(--radius-xl);margin-bottom:var(--space-3);overflow:hidden;background:var(--color-bg)}.group-header{display:flex;justify-content:space-between;align-items:center;width:100%;min-height:var(--touch-target);padding:var(--space-3) var(--space-4);font-family:inherit;font-size:var(--text-base);font-weight:600;color:var(--color-text);background:var(--color-bg-secondary);border:none;cursor:pointer;transition:background var(--transition-fast);-webkit-tap-highlight-color:transparent}.group-header:active{background:var(--color-bg-tertiary)}.group-header .chevron{transition:transform var(--transition-base);color:var(--color-text-muted)}.settings-group.collapsed .group-header .chevron{transform:rotate(-90deg)}.group-content{padding:var(--space-4);border-top:1px solid var(--color-border)}.settings-group.collapsed .group-content{display:none}.progress-bar{width:100%;height:8px;background:var(--color-bg-tertiary);border-radius:var(--radius-full);overflow:hidden}.progress-fill{height:100%;background:var(--color-primary);border-radius:var(--radius-full);transition:width var(--transition-base)}.progress-item{margin-bottom:var(--space-4)}.progress-label{display:flex;justify-content:space-between;margin-bottom:var(--space-2);font-size:var(--text-sm)}.progress-percent{color:var(--color-text-muted);font-variant-numeric:tabular-nums}.tool-bar{display:flex;flex-wrap:wrap;gap:var(--space-2);padding:var(--space-3);background:var(--color-bg-secondary);border-radius:var(--radius-xl);margin-top:var(--space-4)}.tool-btn{display:flex;align-items:center;justify-content:center;width:var(--touch-target);height:var(--touch-target);padding:0;font-family:inherit;color:var(--color-text-secondary);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);-webkit-tap-highlight-color:transparent}.tool-btn:active{transform:scale(.95);background:var(--color-bg-tertiary)}.tool-btn.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.tool-separator{width:1px;height:var(--touch-target);background:var(--color-border);margin:0 var(--space-1)}.dropzone{border:2px dashed var(--color-border);border-radius:var(--radius-2xl);padding:var(--space-8) var(--space-4);text-align:center;cursor:pointer;transition:all var(--transition-base);-webkit-tap-highlight-color:transparent}.dropzone:hover,.dropzone:active,.dropzone.dragover{border-color:var(--color-primary);background:var(--color-primary-light)}.dropzone-inner{display:flex;flex-direction:column;align-items:center;gap:var(--space-3)}.dropzone-icon{width:3rem;height:3rem;color:var(--color-text-muted)}.dropzone-text{font-size:var(--text-lg);font-weight:500;color:var(--color-text);margin:0}.dropzone-or{color:var(--color-text-muted);margin:0}.dropzone-hint{font-size:var(--text-sm);color:var(--color-text-muted);margin:0}.style-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-2)}.style-btn{display:flex;flex-direction:column;align-items:center;gap:var(--space-2);min-height:80px;padding:var(--space-3);font-family:inherit;font-size:var(--text-sm);color:var(--color-text-secondary);background:var(--color-bg);border:2px solid var(--color-border);border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-fast);-webkit-tap-highlight-color:transparent}.style-btn:active{transform:scale(.97)}.style-btn.selected{border-color:var(--color-primary);background:var(--color-primary-light);color:var(--color-primary)}.style-icon{font-size:var(--text-2xl);line-height:1}.loading-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-3);background:#fffffff2;border-radius:var(--radius-lg);z-index:var(--z-modal)}@media (prefers-color-scheme: dark){.loading-overlay{background:#0f172af2}}@media (min-width: 640px){.btn{font-size:var(--text-sm)}.btn-large{font-size:var(--text-base)}.input-group{flex-direction:row}.style-grid{grid-template-columns:repeat(4,1fr)}.dropzone{padding:var(--space-10) var(--space-6)}.quick-actions .btn{flex:0 1 auto}}@media (min-width: 1024px){.style-grid{grid-template-columns:repeat(7,1fr)}.dropzone{padding:var(--space-12)}}.panel-container{max-width:100%;margin:0 auto}.panel-header{text-align:center;margin-bottom:var(--space-6)}.panel-header h2{margin-bottom:var(--space-2)}.panel-header .subtitle{color:var(--color-text-secondary);margin:0;font-size:var(--text-sm)}.step-panel{opacity:0;transform:translateY(10px);transition:opacity var(--transition-base),transform var(--transition-base)}.step-panel.active{opacity:1;transform:translateY(0)}.ai-content{max-width:100%;margin:0 auto}.api-key-section{margin-bottom:var(--space-6);padding:var(--space-4);background:var(--color-bg-secondary);border-radius:var(--radius-xl)}.generation-section{display:flex;flex-direction:column;gap:var(--space-6)}.prompt-section,.style-section{display:flex;flex-direction:column;gap:var(--space-3)}.ai-preview-section{margin-top:var(--space-6)}.ai-preview-section .preview-container{position:relative;max-width:100%;margin:0 auto var(--space-4);border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-lg);aspect-ratio:1;background:var(--color-bg-secondary)}.ai-preview-section .preview-container img{display:block;width:100%;height:100%;object-fit:contain}.preview-actions{display:flex;flex-direction:column;gap:var(--space-3)}.preview-actions .btn{width:100%}.upload-content{max-width:100%;margin:0 auto}.upload-preview{display:flex;flex-direction:column;gap:var(--space-4)}.preview-wrapper{display:flex;justify-content:center;align-items:center;padding:var(--space-4);background:var(--color-bg-secondary);border-radius:var(--radius-xl);min-height:200px}.preview-wrapper canvas{max-width:100%;max-height:300px;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.preview-info{padding:var(--space-4);background:var(--color-bg-secondary);border-radius:var(--radius-xl)}.image-info{display:flex;flex-direction:column;gap:var(--space-2);margin-bottom:var(--space-4);padding-bottom:var(--space-4);border-bottom:1px solid var(--color-border);font-size:var(--text-sm);color:var(--color-text-secondary)}.image-info .btn-text{align-self:flex-start}.refine-layout{display:flex;flex-direction:column;gap:var(--space-4)}.refine-preview{display:flex;flex-direction:column;order:1}.canvas-wrapper{position:relative;display:flex;justify-content:center;align-items:center;min-height:250px;padding:var(--space-3);background:var(--color-bg-secondary);border-radius:var(--radius-xl);overflow:hidden}.canvas-wrapper canvas{max-width:100%;max-height:300px}.canvas-wrapper #selection-overlay{position:absolute;pointer-events:none}.refine-settings{order:2}.process-content{max-width:100%;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:var(--space-6)}.comparison-container{position:relative;width:100%;aspect-ratio:1;max-height:350px;background:var(--color-bg-secondary);border-radius:var(--radius-xl);overflow:hidden}.comparison-container canvas,.comparison-container svg{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}.comparison-container svg{clip-path:inset(0 50% 0 0)}.comparison-slider{position:absolute;top:0;bottom:0;left:50%;width:4px;background:#fff;cursor:ew-resize;z-index:10;box-shadow:var(--shadow-lg);touch-action:none}.slider-handle{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:44px;height:44px;background:#fff;border-radius:50%;box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center}.slider-handle:before{content:"⟷";font-size:var(--text-lg);color:var(--color-text-secondary)}.comparison-labels{position:absolute;bottom:var(--space-3);left:var(--space-3);right:var(--space-3);display:flex;justify-content:space-between;font-size:var(--text-xs);color:var(--color-text-muted);pointer-events:none}.progress-section{width:100%}.process-status{font-size:var(--text-sm);color:var(--color-text-secondary);text-align:center}.download-content{display:flex;flex-direction:column;align-items:center;gap:var(--space-6)}.download-content>.btn-large{width:100%}.assets-grid{display:grid;grid-template-columns:1fr;gap:var(--space-4);width:100%}.asset-card{display:flex;flex-direction:column;padding:var(--space-4);background:var(--color-bg-secondary);border:1px 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var(--color-border)}.expanded-item{display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-3) 0;font-size:var(--text-sm)}.expanded-item:not(:last-child){border-bottom:1px solid var(--color-border)}.expanded-item .btn{align-self:flex-start}@media (min-width: 640px){.panel-container{max-width:600px}.panel-header{margin-bottom:var(--space-8)}.panel-header .subtitle{font-size:var(--text-base)}.preview-actions{flex-direction:row;justify-content:center}.preview-actions .btn{width:auto}.image-info{flex-direction:row;justify-content:space-between;align-items:center}.preview-wrapper canvas{max-height:400px}.canvas-wrapper{min-height:350px}.canvas-wrapper canvas{max-height:400px}.comparison-container{max-height:450px}.assets-grid{grid-template-columns:repeat(2,1fr)}.expanded-item{flex-direction:row;justify-content:space-between;align-items:center}.download-content>.btn-large{width:auto;min-width:280px}}@media (min-width: 1024px){.panel-container{max-width:1200px}.ai-content,.upload-content{max-width:600px}.ai-preview-section .preview-container{max-width:400px}.refine-layout{display:grid;grid-template-columns:1fr 380px;gap:var(--space-6)}.refine-preview{order:1}.refine-settings{order:2;max-height:calc(100vh - 280px);overflow-y:auto;padding-right:var(--space-2)}.canvas-wrapper{min-height:450px}.canvas-wrapper canvas{max-height:550px}.process-content{max-width:800px}.comparison-container{max-width:600px;max-height:500px}.progress-section{max-width:400px}.assets-grid{grid-template-columns:repeat(3,1fr)}.asset-info h4{font-size:var(--text-sm)}}@media (min-width: 1280px){.refine-layout{grid-template-columns:1fr 420px}.assets-grid{grid-template-columns:repeat(4,1fr)}}