*,*:before,*:after{box-sizing:border-box}html{font-size:18px;line-height:1.6;-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;text-size-adjust:100%}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;font-size:1rem;line-height:1.6;color:#333;background-color:#f8f9fa;overflow-x:hidden}body.high-contrast{background-color:#000;color:#fff}.app-container{min-height:100vh;display:flex;flex-direction:column;max-width:1200px;margin:0 auto;padding:0 1rem}.app-header{text-align:center;padding:2rem 1rem 1rem;background-color:#fff;border-radius:0 0 4px 4px;box-shadow:0 2px 8px #0000001a;margin-bottom:2rem}.app-title{font-size:2.2rem;font-weight:700;margin:0 0 .5rem;color:#2c3e50}.app-subtitle{font-size:1.1rem;color:#6c757d;margin:0;font-weight:400}.app-main{flex:1;padding-bottom:2rem}.btn{display:inline-block;padding:.75rem 1.5rem;font-size:1rem;font-weight:500;line-height:1.2;text-align:center;text-decoration:none;vertical-align:middle;cursor:pointer;border:2px solid transparent;border-radius:4px;transition:all .2s ease;min-height:44px;min-width:100px}.btn:focus{outline:2px solid #007bff;outline-offset:2px}.btn-primary{color:#fff;background-color:#007bff;border-color:#007bff}.btn-primary:hover{background-color:#0056b3;border-color:#0056b3}.btn-secondary{color:#6c757d;background-color:transparent;border-color:#6c757d}.btn-secondary:hover{color:#fff;background-color:#6c757d}.app-footer{text-align:center;padding:2rem 1rem;border-top:1px solid #dee2e6;margin-top:3rem}.footer-text{font-size:.9rem;color:#6c757d;margin:0;line-height:1.5}.loading-indicator{position:fixed;inset:0;background-color:#ffffffe6;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:1000}.loading-spinner{width:48px;height:48px;border:4px solid #f3f3f3;border-top:4px solid #007bff;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-message{font-size:1.1rem;color:#495057;font-weight:500}.error-message{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb;border-radius:4px;padding:1rem;margin:1rem 0;display:flex;align-items:center;gap:.75rem;font-size:1rem;animation:slideDown .3s ease}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.error-icon{font-size:1.2rem;flex-shrink:0}.error-text{flex:1}.empty-state{text-align:center;padding:3rem 2rem;color:#6c757d}.empty-state-icon{font-size:4rem;margin-bottom:1rem;opacity:.5}.empty-state h3{font-size:1.3rem;margin:0 0 .5rem;font-weight:500}.empty-state p{font-size:1rem;margin:0;line-height:1.6}.skip-link{position:absolute;top:-40px;left:6px;background:#000;color:#fff;padding:8px;text-decoration:none;z-index:1000;border-radius:4px;font-size:.9rem}.skip-link:focus{top:6px}@media (max-width: 768px){.app-container{padding:0 .75rem}.app-header{padding:1.5rem 1rem .75rem}.app-title{font-size:1.8rem}}@media (max-width: 480px){html{font-size:16px}.app-title{font-size:1.6rem}.btn{padding:.6rem 1.2rem;font-size:.9rem}}@media print{.app-header,.app-footer{display:none}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.modal{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:1rem;opacity:1;visibility:visible;transition:opacity .3s ease,visibility .3s ease}.modal.hidden{opacity:0;visibility:hidden;pointer-events:none}.modal-backdrop{position:absolute;inset:0;background-color:#ffffffe6;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{position:relative;background-color:#fff;border-radius:6px;box-shadow:0 20px 60px #0000004d;max-width:95vw;max-height:95vh;width:auto;overflow:hidden;display:flex;flex-direction:column;z-index:1001}@media (prefers-reduced-motion: reduce){.modal{transition:none}}.single-image-editor{display:flex;flex-direction:column;gap:1.5rem}.image-container{position:relative;display:flex;align-items:center;justify-content:center;background-color:#f0f0f0;border:none;border-radius:8px;padding:1rem;min-height:808px;overflow:auto}.image-container.has-image{background-color:transparent;border:transparent;cursor:pointer}#main-canvas{display:block;max-width:100%;width:1024px;height:768px;background-color:#000;border:1px solid #e9ecef;box-shadow:0 4px 12px #0000001a}.drop-zone-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background-color:#f8f9faf2;transition:opacity .3s ease}.drop-zone-overlay.hidden{opacity:0;pointer-events:none}.drop-zone-content{text-align:center;padding:2rem}.drop-zone-icon{color:#6c757d;margin-bottom:1rem}.drop-zone-title{font-size:1.3rem;font-weight:600;color:#495057;margin:0 0 .75rem}.drop-zone-description{font-size:1rem;color:#6c757d;margin:0;line-height:1.5}.drag-overlay{position:absolute;inset:0;background-color:#007bff1a;border:3px dashed #007bff;border-radius:8px;display:flex;align-items:center;justify-content:center;transition:opacity .2s ease}.drag-overlay.hidden{opacity:0;pointer-events:none}.drag-overlay-content{text-align:center;color:#007bff}.drag-overlay-icon{font-size:3rem;margin-bottom:.5rem}.drag-overlay-text{font-size:1.1rem;font-weight:600;margin:0}.click-hint-overlay{position:absolute;inset:0;background-color:#6c757dcc;display:flex;align-items:center;justify-content:center;transition:opacity .3s ease;opacity:0;pointer-events:none}.image-container.has-image:hover .click-hint-overlay{opacity:1}.click-hint-overlay.hidden{opacity:0;pointer-events:none}.click-hint-content{text-align:center;color:#fff}.click-hint-icon{font-size:2.5rem;margin-bottom:.5rem}.click-hint-text{font-size:1.1rem;font-weight:600;margin:0}.caption-section{background-color:#f8f9fa;padding:1.5rem;border-radius:8px;border:1px solid #e9ecef}.caption-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:.75rem;gap:1rem}.caption-label{font-size:1.1rem;font-weight:600;color:#495057;margin:0}.caption-position-controls{flex-shrink:0;display:flex;gap:1rem;flex-wrap:wrap}.position-group{display:flex;gap:.5rem}.position-group-label{font-size:.9rem;color:#495057;margin-top:.2rem;white-space:nowrap}.position-dropdowns{display:flex;gap:.5rem}.position-select{font-size:.9rem;color:#495057;background-color:#fff;border:1px solid #ced4da;border-radius:4px;padding:.25rem .5rem;cursor:pointer;min-width:70px;font-family:inherit;transition:border-color .2s ease,box-shadow .2s ease}.position-select:focus{outline:none;border-color:#007bff;box-shadow:0 0 0 2px #007bff40}.position-select:hover{border-color:#007bff}.position-select:disabled{background-color:#f8f9fa;color:#6c757d;border-color:#dee2e6;cursor:default;opacity:.6}.position-select:disabled:hover{border-color:#dee2e6}.position-group:has(.position-select:disabled) .position-group-label{color:#6c757d;opacity:.6}.checkbox-label{display:flex;align-items:center;gap:.5rem;font-size:.9rem;color:#495057;cursor:pointer;font-family:inherit;min-height:28px}.checkbox-label input[type=checkbox]{margin:0;cursor:pointer}.checkbox-label input[type=checkbox]:disabled{cursor:default}.checkbox-label:has(input[type=checkbox]:disabled){cursor:default;color:#6c757d;opacity:.6}.checkbox-text{-webkit-user-select:none;user-select:none}.action-button{font-size:.8rem;border-radius:4px;padding:.333rem .5rem;cursor:pointer;font-family:inherit;transition:background-color .2s ease,color .2s ease,border-color .2s ease;min-height:28px;white-space:nowrap;border:1px solid}.action-button:focus{outline:none}.action-button:disabled{cursor:default;opacity:.6}.import-button{color:#fff;background-color:#007bff;border-color:#007bff;margin-right:.5rem}.import-button:hover{background-color:#0056b3;border-color:#0056b3}.import-button:focus{box-shadow:0 0 0 2px #007bff40}.import-button:disabled{background-color:transparent;color:#6c757d;border-color:#dee2e6}.import-button:disabled:hover{background-color:transparent;color:#6c757d}.reset-button{color:#fff;background-color:#dc3545;border-color:#dc3545}.reset-button:hover{background-color:#c82333;border-color:#bd2130}.reset-button:focus{box-shadow:0 0 0 2px #dc354540}.reset-button:disabled{background-color:transparent;color:#6c757d;border-color:#dee2e6}.reset-button:disabled:hover{background-color:transparent;color:#6c757d}.export-button{color:#fff;background-color:#28a745;border-color:#28a745}.export-button:hover:not(:disabled){background-color:#218838;border-color:#1e7e34}.export-button:focus{box-shadow:0 0 0 2px #28a74540}.export-button:disabled{background-color:#6c757d;border-color:#6c757d;color:#fff;cursor:default;opacity:.6}.export-button:disabled:hover{background-color:#6c757d;border-color:#6c757d}.export-button.loading{background-color:#17a2b8;border-color:#138496;cursor:wait}.export-button.loading:hover{background-color:#17a2b8;border-color:#138496}.export-progress-indicator{position:absolute;top:100%;left:0;right:0;background:#fffffff2;border:1px solid #dee2e6;border-radius:4px;padding:.5rem;margin-top:.25rem;box-shadow:0 2px 8px #0000001a;z-index:100}.progress-text{font-size:.8rem;color:#495057;margin-bottom:.25rem;text-align:center}.progress-bar-container{background-color:#e9ecef;border-radius:2px;height:4px;overflow:hidden}.progress-bar{background-color:#28a745;height:100%;transition:width .3s ease;width:0%}.export-message{font-size:.9rem;line-height:1.4}.export-message-success{background-color:#d4edda!important;border-color:#c3e6cb!important;color:#155724!important}.export-message-error{background-color:#f8d7da!important;border-color:#f5c6cb!important;color:#721c24!important}.caption-input-row{display:flex;gap:.75rem;align-items:stretch}.caption-input{flex:1;background-color:#fff;border:2px solid #dee2e6;border-radius:4px;padding:.75rem;color:#495057;font-size:1rem;line-height:1.2;box-sizing:border-box;transition:border-color .2s ease,box-shadow .2s ease;min-height:48px}.caption-input::placeholder{color:#6c757d}.caption-input:focus{outline:none;border-color:#007bff;box-shadow:0 0 0 3px #007bff40}.caption-input:disabled{background-color:#f8f9fa;color:#6c757d;border-color:#dee2e6;cursor:default;opacity:.6}.caption-input:disabled::placeholder{color:#6c757d;opacity:.8}.image-info-overlay{position:absolute;bottom:1rem;left:1rem;right:1rem;background-color:#000000b3;color:#fff;padding:.75rem 1rem;border-radius:4px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);opacity:0;transition:opacity .3s ease}.image-container:hover .image-info-overlay{opacity:1}.image-info{display:flex;justify-content:space-between;align-items:center;font-size:.9rem}.image-filename{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:300px}.image-filesize{font-weight:400;opacity:.9;margin-left:1rem;flex-shrink:0}#main-canvas.loading{background-image:linear-gradient(45deg,#f0f0f0 25%,transparent 25%),linear-gradient(-45deg,#f0f0f0 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#f0f0f0 75%),linear-gradient(-45deg,transparent 75%,#f0f0f0 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0px;animation:loading-pattern 2s linear infinite}@keyframes loading-pattern{0%{background-position:0 0,0 10px,10px -10px,-10px 0px}to{background-position:20px 20px,20px 30px,30px 10px,10px 20px}}#main-canvas.error{background-color:#f8d7da;border:2px dashed #dc3545}#main-canvas.error:after{content:"⚠️ Failed to load image";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#721c24;font-size:1.1rem;font-weight:500;text-align:center}@media (max-width: 900px){.single-image-editor{padding:.75rem}.image-container{min-height:auto;padding:.75rem}#main-canvas{width:100%;max-width:1024px;height:auto;aspect-ratio:4/3}.caption-header{flex-direction:column;align-items:flex-start;gap:.75rem}.caption-position-controls{align-self:stretch}.position-group{flex:1;justify-content:space-between}}@media (max-width: 600px){.single-image-editor{padding:.5rem}.caption-section{padding:1rem}.position-dropdowns{flex-direction:column;gap:.25rem}.position-select{width:100%;min-width:auto}.image-info{flex-direction:column;align-items:flex-start;gap:.25rem}.image-filesize{margin-left:0}}@media (-webkit-min-device-pixel-ratio: 2),(min-resolution: 192dpi){#main-canvas{image-rendering:-webkit-optimize-contrast;image-rendering:crisp-edges}}@media (prefers-reduced-motion: reduce){.drop-zone-overlay,.drag-overlay,.image-info-overlay,.caption-input,.position-select{transition:none}#main-canvas.loading{animation:none}.image-info-overlay{opacity:1}}