:root{--color-bg-primary: #ffffff;--color-bg-secondary: #f5f5f7;--color-bg-tertiary: #e8e8ed;--color-text-primary: #1d1d1f;--color-text-secondary: #6e6e73;--color-text-tertiary: #86868b;--color-border: #d2d2d7;--color-border-light: #e8e8ed;--color-accent: #0071e3;--color-accent-hover: #0077ed;--color-success: #34c759;--color-error: #ff3b30;--color-shadow: rgba(0, 0, 0, .1);--color-overlay: rgba(0, 0, 0, .4);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--radius-xs: 2px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-normal: .25s ease}[data-theme=dark]{--color-bg-primary: #000000;--color-bg-secondary: #1c1c1e;--color-bg-tertiary: #2c2c2e;--color-text-primary: #f5f5f7;--color-text-secondary: #a1a1a6;--color-text-tertiary: #6e6e73;--color-border: #3a3a3c;--color-border-light: #2c2c2e;--color-accent: #0a84ff;--color-accent-hover: #409cff;--color-success: #30d158;--color-error: #ff453a;--color-shadow: rgba(0, 0, 0, .3);--color-overlay: rgba(0, 0, 0, .6);--color-overlay-hard: rgba(150, 150, 150, .9)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--color-bg-primary: #000000;--color-bg-secondary: #1c1c1e;--color-bg-tertiary: #2c2c2e;--color-text-primary: #f5f5f7;--color-text-secondary: #a1a1a6;--color-text-tertiary: #6e6e73;--color-border: #3a3a3c;--color-border-light: #2c2c2e;--color-accent: #0a84ff;--color-accent-hover: #409cff;--color-success: #30d158;--color-error: #ff453a;--color-shadow: rgba(0, 0, 0, .3);--color-overlay: rgba(0, 0, 0, .6);--color-overlay-hard: rgba(50, 50, 50, .9)}}*,*: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:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background-color:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.5;min-height:100vh;transition:background-color var(--transition-normal),color var(--transition-normal)}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}.app-container{max-width:1200px;margin:0 auto;padding:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-lg)}.app-header{display:flex;justify-content:space-between;align-items:center;padding:0 0 var(--spacing-md) 0;border-bottom:1px solid var(--color-border-light)}.app-branding{display:flex;flex-direction:column;gap:var(--spacing-xs)}.app-title{font-size:1.5rem;font-weight:600;color:var(--color-text-primary)}.app-subtitle{font-size:.875rem;color:var(--color-text-secondary)}@media(max-width:999px){.app-title{font-size:1.25rem}.app-branding{gap:0}}.app-main{display:grid;gap:var(--spacing-xl);align-items:start}.sidebar,.content{display:flex;flex-direction:column;gap:var(--spacing-lg)}@media(min-width:1000px){.app-main{grid-template-columns:300px 1fr}}@media(max-width:999px){.app-container{padding:var(--spacing-md)}.app-main{gap:var(--spacing-lg)}.app-header{flex-direction:row;align-items:flex-start;gap:var(--spacing-md)}.app-main>.content{display:contents}.app-main>.sidebar{display:contents}section.content{max-width:100%}#uploader-container{order:0}#preview-container{order:1}#control-panel-container{order:2}#download-panel-container{order:3}}.app-main:not(:has(.image-uploader.minimized)){grid-template-columns:1fr}.app-main:not(:has(.image-uploader.minimized)) .content{display:none}.app-main:not(:has(.image-uploader.minimized)) .sidebar{margin-left:auto;margin-right:auto;max-width:760px;align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);font-size:.875rem;font-weight:500;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--color-accent);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--color-accent-hover)}.btn-secondary{background-color:var(--color-bg-tertiary);color:var(--color-text-primary)}.btn-secondary:hover:not(:disabled){background-color:var(--color-border)}.image-uploader{width:100%}.upload-zone{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-md);border:2px dashed var(--color-border);border-radius:var(--radius-lg);background-color:var(--color-bg-secondary);cursor:pointer;transition:all var(--transition-fast);text-align:center}.upload-zone:hover,.upload-zone:focus{border-color:var(--color-accent);background-color:var(--color-bg-tertiary);outline:none}.upload-zone.drag-over{border-color:var(--color-accent);background-color:var(--color-bg-tertiary);transform:scale(1.01)}.upload-icon{color:var(--color-text-tertiary)}.upload-text{color:var(--color-text-primary)}.upload-text span{display:block;color:var(--color-text-secondary);font-size:.875em}.image-uploader.minimized .upload-zone{font-size:.75rem;padding:var(--spacing-sm)}.image-uploader.minimized .upload-text{display:none}.upload-formats{font-size:.75em;color:var(--color-text-tertiary)}.file-input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.error-message{margin-top:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-error);color:#fff;border-radius:var(--radius-sm);font-size:.875rem;display:none}.error-message.visible{display:block}.upload-zone.loading{pointer-events:none;position:relative;opacity:.7}.upload-zone .uploader-spinner{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:var(--color-overlay-hard);border-radius:inherit}.uploader-spinner svg{width:40px;height:40px;animation:spin 1s linear infinite;color:var(--color-accent)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.control-panel{background-color:var(--color-bg-secondary);border-radius:var(--radius-lg);padding:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-sm)}.control-group{margin-bottom:var(--spacing-lg)}.control-group:last-child{margin-bottom:0}.control-label{display:block;font-weight:600;font-size:.875rem;color:var(--color-text-primary);margin-bottom:var(--spacing-sm)}.control-hint{font-size:.75rem;color:var(--color-text-tertiary);margin-bottom:var(--spacing-sm)}@media(max-width:999px){.control-panel{gap:var(--spacing-xs)}.control-hint{display:none}}.radio-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.radio-option{display:flex;align-items:center;cursor:pointer}.radio-option input[type=radio]{width:18px;height:18px;margin-right:var(--spacing-sm);accent-color:var(--color-accent)}.radio-label{display:flex;align-items:center;gap:var(--spacing-sm);font-size:.875rem;color:var(--color-text-primary)}.ratio-icon{width:24px;height:24px;border:2px solid var(--color-border);border-radius:3px}.ratio-square{aspect-ratio:1;width:20px;height:20px}.ratio-portrait{aspect-ratio:4 / 5;width:16px;height:20px}.number-input{display:flex;flex-direction:column;gap:var(--spacing-xs)}.padding-inputs{display:flex;flex-direction:column;gap:var(--spacing-md)}.padding-input{display:flex;flex-direction:row;gap:var(--spacing-sm);justify-content:space-between}.padding-input .number-input-label{font-size:.875rem;color:var(--color-text-secondary);min-width:6rem;text-align:left}.padding-input input[type=range]{min-width:9rem;max-width:20rem;flex:1}@media(max-width:999px){.padding-input{justify-content:flex-start}.padding-input .number-input-label{text-align:left}}.color-options{display:flex;align-items:center;gap:var(--spacing-sm)}.color-preset{width:32px;height:32px;border-radius:var(--radius-full);border:2px solid var(--color-border);cursor:pointer;transition:all var(--transition-fast)}.color-preset:hover{transform:scale(1.1)}.color-preset.selected{border-color:var(--color-accent);box-shadow:0 0 0 2px var(--color-bg-primary),0 0 0 4px var(--color-accent)}.color-white{background-color:#fff}.color-black{background-color:#000}.color-custom{display:flex;align-items:center;gap:var(--spacing-xs)}.color-input{width:32px;height:32px;border:none;border-radius:var(--radius-full);cursor:pointer;padding:0;overflow:hidden}.color-input::-webkit-color-swatch-wrapper{padding:0}.color-input::-webkit-color-swatch{border:2px solid var(--color-border);border-radius:var(--radius-full)}.color-custom-label{font-size:.75rem;color:var(--color-text-tertiary)}.slice-preview{background-color:var(--color-bg-secondary);border-radius:var(--radius-lg);padding:var(--spacing-lg);min-height:200px}.preview-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-md)}.preview-title{font-size:1rem;font-weight:600;color:var(--color-text-primary)}.preview-info{font-size:.875rem;color:var(--color-text-secondary)}.preview-grid{display:flex;flex-wrap:nowrap;gap:var(--spacing-sm);overflow-x:auto;max-width:48rem;box-sizing:border-box}.preview-dots{display:flex;gap:var(--spacing-sm);justify-content:center;align-items:center;padding-top:var(--spacing-sm)}.preview-dot{width:6px;height:6px;background-color:var(--color-text-tertiary);border-radius:50%;opacity:.6;border:none;padding:0;cursor:pointer;transition:transform var(--transition-fast),opacity var(--transition-fast),background-color var(--transition-fast)}.preview-dot:focus{outline:2px solid var(--color-accent);outline-offset:2px}.preview-dot--active{transform:scale(1.3);background-color:var(--color-accent);opacity:1}.preview-item{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-xs);min-width:10rem}.preview-item canvas{width:100%;height:auto;border-radius:var(--radius-xs);box-shadow:0 2px 8px var(--color-shadow)}.preview-label{font-size:.875rem;font-weight:700;color:var(--color-text-secondary)}@media(max-width:999px){.preview-grid{display:flex;flex-direction:row;max-width:100%;gap:var(--spacing-sm);overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-gutter:stable;width:calc(100dvw - var(--spacing-2xl) - var(--spacing-xl));box-sizing:border-box}.preview-item{flex:0 0 auto;padding:0;box-sizing:border-box;width:calc(100dvw - var(--spacing-2xl) - var(--spacing-xl));max-width:100dvw}.preview-item canvas{width:100%;height:auto;display:block;max-width:100%;background-clip:padding-box}}@media(max-width:999px)and (orientation:landscape){.preview-item{max-width:100dvh}}.download-panel{background-color:var(--color-bg-secondary);border-radius:var(--radius-lg);padding:var(--spacing-lg)}@media(max-width:999px){.download-panel{padding:0}.download-panel .download-individual{display:none}}.download-header{margin-bottom:var(--spacing-md)}.download-title{font-size:1rem;font-weight:600;color:var(--color-text-primary)}.download-all-btn{width:100%;padding:var(--spacing-md);font-size:1rem}.download-hint{font-size:.75rem;color:var(--color-text-tertiary);margin-bottom:var(--spacing-sm)}.download-buttons{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.download-single-btn{flex:1;min-width:80px}.download-progress{margin-top:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-bg-tertiary);border-radius:var(--radius-sm);font-size:.875rem;color:var(--color-text-secondary);text-align:center;display:none}.download-progress.visible{display:block}.theme-toggle{display:flex;align-items:center}.theme-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:transparent;border:1px solid var(--color-border);border-radius:var(--radius-full);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast)}.theme-btn:hover{background-color:var(--color-bg-tertiary);color:var(--color-text-primary)}.theme-btn .icon-sun,.theme-btn .icon-moon{transition:opacity var(--transition-fast)}.theme-btn .icon-sun{display:none}.theme-btn .icon-moon,[data-theme=dark] .theme-btn .icon-sun{display:block}[data-theme=dark] .theme-btn .icon-moon{display:none}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .theme-btn .icon-sun{display:block}:root:not([data-theme=light]) .theme-btn .icon-moon{display:none}}.image-info{background-color:var(--color-bg-secondary);border-radius:var(--radius-lg);padding:var(--spacing-lg)}.image-info-title{font-size:1rem;font-weight:600;color:var(--color-text-primary);margin-bottom:var(--spacing-md)}.image-info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-sm)}.image-info-item{display:flex;flex-direction:column}.image-info-label{font-size:.75rem;color:var(--color-text-tertiary)}.image-info-value{font-size:.875rem;font-weight:500;color:var(--color-text-primary)}.app-footer{padding-top:var(--spacing-lg);border-top:1px solid var(--color-border-light);text-align:center}.footer-text{font-size:.75rem;color:var(--color-text-tertiary)}