:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a25;--bg-card: rgba(26, 26, 37, .8);--text-primary: #ffffff;--text-secondary: #a0a0b0;--text-muted: #606070;--accent-primary: #6366f1;--accent-secondary: #818cf8;--accent-glow: rgba(99, 102, 241, .4);--success: #10b981;--success-glow: rgba(16, 185, 129, .4);--border-color: rgba(255, 255, 255, .08);--border-hover: rgba(255, 255, 255, .15);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .5);--shadow-glow: 0 0 30px var(--accent-glow)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.5}#app{display:flex;flex-direction:column;min-height:100vh}.header{position:sticky;top:0;z-index:100;background:#0a0a0fcc;backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color)}.header-content{max-width:1200px;margin:0 auto;padding:var(--spacing-md) var(--spacing-lg);display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:var(--spacing-sm)}.logo-icon{width:32px;height:32px;color:var(--accent-primary)}.logo-text{font-size:1.25rem;font-weight:700;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.privacy-badge{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-xs) var(--spacing-md);background:#10b9811a;border:1px solid rgba(16,185,129,.3);border-radius:var(--radius-xl);font-size:.875rem;color:var(--success)}.privacy-icon{width:16px;height:16px}.header-actions{display:flex;align-items:center;gap:var(--spacing-md);flex-wrap:wrap;justify-content:flex-end}.language-switcher{position:relative}.language-toggle{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:.4rem .75rem;border-radius:999px;border:1px solid rgba(255,255,255,.15);background:#ffffff0f;color:var(--text-primary);font-size:.85rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);backdrop-filter:blur(8px)}.language-toggle:hover{border-color:#ffffff4d;background:#ffffff1a}.language-toggle:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.language-chevron{font-size:.8rem;color:var(--text-secondary)}.flag-icon{width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center}.flag-icon__svg{display:block}.language-menu{position:absolute;top:calc(100% + .5rem);right:0;min-width:200px;background:#fff;border-radius:14px;border:1px solid rgba(0,0,0,.08);box-shadow:0 18px 40px #00000040;padding:.4rem;display:grid;gap:.15rem;z-index:200;list-style:none;margin:0}.language-menu[hidden]{display:none}.language-option{display:flex;align-items:center;gap:.6rem;padding:.5rem .6rem;border-radius:10px;color:#1a1a1a;text-decoration:none;font-weight:600;font-size:.85rem;transition:background var(--transition-fast),transform var(--transition-fast)}.language-option:hover{background:#6366f11f;transform:translate(2px)}.language-option[aria-selected=true]{background:#10b98124}.main{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-xl)}.upload-section{width:100%;max-width:1200px}.upload-area{position:relative;border:2px dashed var(--border-color);border-radius:var(--radius-2xl);padding:var(--spacing-2xl);text-align:center;cursor:pointer;transition:all var(--transition-base);background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));width:100%}.upload-area:hover,.upload-area.drag-over{border-color:var(--accent-primary);background:linear-gradient(135deg,#6366f10d,#818cf80d);transform:translateY(-2px);box-shadow:var(--shadow-glow)}.upload-content{pointer-events:none}.upload-icon{width:64px;height:64px;color:var(--accent-primary);margin-bottom:var(--spacing-lg);opacity:.8}.upload-title{font-size:1.5rem;font-weight:600;margin-bottom:var(--spacing-sm)}.upload-subtitle{color:var(--text-secondary);margin-bottom:var(--spacing-md)}.upload-hint{font-size:.875rem;color:var(--text-muted)}.seo-section{margin-top:var(--spacing-2xl)}.seo-title{font-size:2.5rem;font-weight:800;text-align:center;margin-bottom:var(--spacing-xl);background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.seo-subtitle-section{font-size:2rem;font-weight:700;text-align:center;margin:4rem 0 2rem;color:var(--text-primary)}.how-to-use-wrapper{margin-bottom:var(--spacing-xl);max-width:1000px;margin-left:auto;margin-right:auto}.how-to-use-card{background:var(--bg-tertiary);border:2px solid var(--accent-primary);border-radius:var(--radius-xl);padding:var(--spacing-2xl);box-shadow:var(--shadow-md)}.how-to-use-card h3{display:none}.how-to-use-card ul{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-lg);padding:0;list-style:none}.how-to-use-card li{background:var(--bg-card);padding:var(--spacing-md);border-radius:var(--radius-lg);border:1px solid var(--border-color);text-align:center;font-weight:500;color:var(--text-primary);box-shadow:var(--shadow-sm);display:flex;align-items:center;justify-content:center;min-height:80px}.seo-grid{display:grid;gap:var(--spacing-lg)}.why-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.faq-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.why-card,.faq-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm)}.why-card h3,.faq-card h3{font-size:1.1rem;font-weight:600;margin-bottom:var(--spacing-md);color:var(--text-primary)}.why-card ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:var(--spacing-sm)}.why-card li{color:var(--text-secondary);position:relative;padding-left:1.5rem}.why-card li:before{content:"•";color:var(--accent-primary);position:absolute;left:.25rem;font-weight:700}.why-card.how-to-use-card li:before{content:none}.why-card.how-to-use-card li{padding-left:var(--spacing-md);text-align:center}.faq-card p{color:var(--text-secondary);font-size:.9rem}.related-tool-actions{margin-top:var(--spacing-md)}.related-tool-actions .btn{display:inline-flex}.processing-section{width:100%;max-width:1200px;display:flex;flex-direction:column;gap:var(--spacing-xl)}.hidden{display:none!important}.preview-container{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--spacing-md);backdrop-filter:blur(12px)}.preview-wrapper{position:relative;width:100%;aspect-ratio:16 / 10;border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-tertiary)}.preview-canvas{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:contain}#enhanced-canvas{clip-path:inset(0 50% 0 0)}#enhanced-canvas.show-transparency{background-image:linear-gradient(45deg,#404040 25%,transparent 25%),linear-gradient(-45deg,#404040 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#404040 75%),linear-gradient(-45deg,transparent 75%,#404040 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0px;background-color:#2a2a2a}.comparison-slider{position:absolute;top:0;left:50%;height:100%;width:4px;transform:translate(-50%);cursor:ew-resize;z-index:10}.slider-line{position:absolute;top:0;left:50%;width:2px;height:100%;background:#fff;transform:translate(-50%);box-shadow:0 0 10px #00000080}.slider-handle{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:40px;height:40px;background:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg)}.slider-handle svg{width:20px;height:20px;color:var(--bg-primary)}.preview-labels{position:absolute;bottom:var(--spacing-md);left:var(--spacing-md);right:var(--spacing-md);display:flex;justify-content:space-between;pointer-events:none}.preview-labels span{padding:var(--spacing-xs) var(--spacing-sm);background:#000000b3;border-radius:var(--radius-sm);font-size:.75rem;font-weight:500;text-transform:uppercase;letter-spacing:.05em}.controls-panel{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--spacing-lg);backdrop-filter:blur(12px);display:flex;flex-wrap:wrap;gap:var(--spacing-lg);align-items:flex-start;justify-content:space-between}.control-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.control-label{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary)}.scale-buttons{display:flex;gap:var(--spacing-xs)}.scale-btn{padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-secondary);font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.scale-btn:hover{border-color:var(--border-hover);color:var(--text-primary)}.scale-btn.active{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.backend-status{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border-radius:var(--radius-md)}.backend-indicator{width:8px;height:8px;border-radius:50%;background:var(--text-muted)}.backend-indicator.webgpu{background:var(--success);box-shadow:0 0 8px var(--success-glow)}.backend-indicator.wasm{background:#f59e0b}.backend-name{font-size:.875rem;font-weight:500}.backend-status-wrapper{position:relative}.backend-status-wrapper:hover .backend-tooltip:not(.hidden){opacity:1;visibility:visible;transform:translateY(0)}.backend-tooltip{position:absolute;top:calc(100% + 8px);left:0;min-width:280px;max-width:360px;padding:var(--spacing-md);background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);font-size:.75rem;line-height:1.5;color:var(--text-secondary);opacity:0;visibility:hidden;transform:translateY(-4px);transition:all var(--transition-fast);z-index:100}.backend-tooltip:before{content:"";position:absolute;top:-6px;left:16px;width:10px;height:10px;background:var(--bg-card);border-left:1px solid var(--border-color);border-top:1px solid var(--border-color);transform:rotate(45deg)}.backend-tooltip.nafnet{border-color:#f59e0b}.backend-tooltip.nafnet:before{border-color:#f59e0b}.model-selector-group{flex:1;min-width:280px}.model-selector{width:100%;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23a0a0b0' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}.model-selector:hover{border-color:var(--border-hover)}.model-selector:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 2px var(--accent-glow)}.model-selector option{background:var(--bg-secondary);color:var(--text-primary);padding:var(--spacing-sm)}.model-info{display:flex;gap:var(--spacing-xs);margin-top:var(--spacing-xs)}.model-badge{padding:2px 8px;border-radius:var(--radius-sm);font-size:.625rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em}.model-badge.speed-fast{background:#10b98133;color:#10b981}.model-badge.speed-medium{background:#f59e0b33;color:#f59e0b}.model-badge.speed-slow{background:#ef444433;color:#ef4444}.model-badge.quality-good{background:#9ca3af33;color:#9ca3af}.model-badge.quality-great{background:#6366f133;color:#818cf8}.model-badge.quality-excellent{background:#a855f733;color:#a855f7}.model-selector-row{display:flex;gap:var(--spacing-sm);align-items:center;flex-wrap:wrap}.model-selector-row .model-selector{flex:1 1 180px}.btn-load,.btn-unload{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:.75rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.btn-load svg,.btn-unload svg{width:14px;height:14px}.btn-load{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff}.btn-load:hover{transform:translateY(-1px);box-shadow:0 0 15px var(--accent-glow)}.btn-load:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-unload{background:var(--bg-tertiary);color:var(--text-secondary)}.btn-unload:hover{background:#ef444433;border-color:#ef444480;color:#ef4444}.model-download-progress{display:flex;align-items:center;gap:var(--spacing-sm);margin-top:var(--spacing-sm)}.download-progress-bar{flex:1;height:6px;background:var(--bg-tertiary);border-radius:var(--radius-sm);overflow:hidden}.download-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));width:0%;transition:width .15s ease}.download-progress-text{font-size:.75rem;font-weight:600;color:var(--text-secondary);min-width:80px;text-align:right}.model-cache-status{font-size:.625rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;padding:2px 8px;border-radius:var(--radius-sm)}.model-cache-status.cached{background:#10b98133;color:#10b981}.model-cache-status.not-cached{background:#9ca3af33;color:#9ca3af}.action-buttons{display:flex;gap:var(--spacing-sm)}.btn{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);border:none;border-radius:var(--radius-md);font-weight:600;font-size:.875rem;cursor:pointer;text-decoration:none;transition:all var(--transition-fast)}.btn svg{width:18px;height:18px}.btn-secondary{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--border-hover)}.btn-primary{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff;box-shadow:var(--shadow-md),0 0 20px var(--accent-glow)}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg),0 0 30px var(--accent-glow)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-success{background:linear-gradient(135deg,var(--success),#059669);color:#fff;box-shadow:var(--shadow-md),0 0 20px var(--success-glow)}.btn-success:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg),0 0 30px var(--success-glow)}.progress-overlay{position:fixed;inset:0;background:#0a0a0fe6;backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000}.progress-content{text-align:center;max-width:300px}.progress-spinner{width:60px;height:60px;border:3px solid var(--border-color);border-top-color:var(--accent-primary);border-radius:50%;margin:0 auto var(--spacing-lg);animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.progress-text{font-size:1.125rem;margin-bottom:var(--spacing-md)}.progress-bar{height:4px;background:var(--bg-tertiary);border-radius:var(--radius-sm);overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));width:0%;transition:width var(--transition-base)}.footer{text-align:center;padding:var(--spacing-lg);border-top:1px solid var(--border-color);font-size:.875rem;color:var(--text-muted)}.footer-privacy{margin-top:var(--spacing-xs);color:var(--success)}@keyframes pulse-glow{0%,to{box-shadow:0 0 20px var(--accent-glow)}50%{box-shadow:0 0 40px var(--accent-glow)}}.processing .btn-primary{animation:pulse-glow 2s ease-in-out infinite}@media (max-width: 768px){.header-content{flex-direction:column;gap:var(--spacing-md)}.header-actions{width:100%;justify-content:center}.language-switcher{width:100%;max-width:320px;justify-content:space-between}.language-toggle{width:100%;justify-content:space-between}.controls-panel{flex-direction:column;align-items:stretch}.action-buttons{flex-direction:column}.btn{justify-content:center}}.toast-container{position:fixed;top:var(--spacing-lg);right:var(--spacing-lg);z-index:9999;display:flex;flex-direction:column;gap:var(--spacing-md);max-width:420px;pointer-events:none}.toast{position:relative;display:flex;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-lg);background:#1a1a25f2;backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-xl);box-shadow:0 8px 32px #0006,0 0 0 1px #ffffff0d inset;color:var(--text-primary);font-size:.9rem;line-height:1.5;pointer-events:auto;animation:toast-slide-in .4s cubic-bezier(.16,1,.3,1);transform-origin:top right;overflow:hidden}.toast.toast-exiting{animation:toast-slide-out .3s cubic-bezier(.16,1,.3,1) forwards}@keyframes toast-slide-in{0%{opacity:0;transform:translate(100%) scale(.9)}to{opacity:1;transform:translate(0) scale(1)}}@keyframes toast-slide-out{0%{opacity:1;transform:translate(0) scale(1)}to{opacity:0;transform:translate(100%) scale(.9)}}.toast-icon{flex-shrink:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:#ef444426;color:#ef4444}.toast-icon svg{width:16px;height:16px}.toast-content{flex:1;min-width:0}.toast-title{font-weight:600;font-size:.95rem;margin-bottom:var(--spacing-xs)}.toast-message{color:var(--text-secondary);font-size:.85rem}.toast-highlight{display:inline;background:linear-gradient(135deg,#ef44444d,#f973164d);color:#fca5a5;font-weight:700;padding:.15em .5em;border-radius:var(--radius-sm);border:1px solid rgba(239,68,68,.3)}.toast-close{flex-shrink:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.toast-close:hover{background:#ffffff1a;color:var(--text-primary)}.toast-close svg{width:14px;height:14px}.toast-progress{position:absolute;bottom:0;left:0;right:0;height:3px;background:#ffffff1a;overflow:hidden}.toast-progress-bar{height:100%;background:linear-gradient(90deg,#ef4444,#f97316);animation:toast-progress-shrink linear forwards}@keyframes toast-progress-shrink{0%{width:100%}to{width:0%}}.crop-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);backdrop-filter:blur(12px)}.crop-aspect-select{padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.crop-aspect-select:hover{border-color:var(--accent-primary)}.crop-aspect-select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-glow)}.crop-dimensions{font-size:.85rem;color:var(--text-secondary);white-space:nowrap}.crop-actions{display:flex;gap:var(--spacing-sm);margin-left:auto}.btn-sm{padding:var(--spacing-xs) var(--spacing-md);font-size:.8rem}.slider-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-xs)}.slider-row-compact{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-sm);margin-bottom:var(--spacing-xs)}.control-label-sm{font-size:.75rem;color:var(--text-secondary);font-weight:500;min-width:90px}.control-subtitle{font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);opacity:.8;margin-top:2px}.basic-adjustments-actions{display:flex;justify-content:flex-end;margin-top:var(--spacing-xs)}.basic-adjustments .control-subtitle{margin-top:var(--spacing-xs);margin-bottom:2px}.basic-adjustments .basic-color-subtitle{margin-top:var(--spacing-sm);border-top:1px solid var(--border-color);padding-top:var(--spacing-sm)}.basic-adjustments .hdr-slider:disabled{opacity:.5;cursor:not-allowed}#btn-reset-adjustments:disabled{opacity:.5;cursor:not-allowed}.hdr-slider,.strength-slider{flex:1;height:4px;background:var(--bg-tertiary);border-radius:var(--radius-sm);appearance:none;border:1px solid var(--border-color);max-width:120px;cursor:pointer}.hdr-slider::-webkit-slider-thumb,.strength-slider::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;background:var(--text-primary);border:2px solid var(--accent-primary);border-radius:50%;cursor:pointer;box-shadow:0 1px 3px #00000080}.hdr-slider:hover::-webkit-slider-thumb,.strength-slider:hover::-webkit-slider-thumb{border-color:var(--accent-secondary);transform:scale(1.1)}.hdr-group{background:#0003;padding:var(--spacing-sm);border-radius:var(--radius-md);border:1px solid var(--border-color)}