:root{--color-bg: #ffffff;--color-bg-secondary: #f5f5f5;--color-text: #1a1a1a;--color-text-secondary: #555555;--color-border: #cccccc;--color-accent: #2563eb;--color-accent-hover: #1d4ed8;--color-error: #dc2626;--color-success: #16a34a;--color-focus-ring: #2563eb;--font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-size-base: 1rem;--font-size-sm: .875rem;--font-size-lg: 1.125rem;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--border-radius: .375rem;--max-width: 640px}[data-theme=dark]{--color-bg: #0a0a0a;--color-bg-secondary: #1a1a1a;--color-text: #e0e0e0;--color-text-secondary: #a0a0a0;--color-border: #333333;--color-accent: #60a5fa;--color-accent-hover: #93c5fd;--color-error: #f87171;--color-success: #4ade80;--color-focus-ring: #60a5fa}@media(prefers-color-scheme:dark){:root:not([data-theme]){--color-bg: #0a0a0a;--color-bg-secondary: #1a1a1a;--color-text: #e0e0e0;--color-text-secondary: #a0a0a0;--color-border: #333333;--color-accent: #60a5fa;--color-accent-hover: #93c5fd;--color-error: #f87171;--color-success: #4ade80;--color-focus-ring: #60a5fa}}[data-theme=high-contrast]{--color-bg: #000000;--color-bg-secondary: #1a1a1a;--color-text: #ffffff;--color-text-secondary: #ffffff;--color-border: #ffffff;--color-accent: #ffff00;--color-accent-hover: #ffff66;--color-error: #ff4444;--color-success: #44ff44;--color-focus-ring: #ffff00}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:100%;-webkit-text-size-adjust:100%}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:1.6;color:var(--color-text);background-color:var(--color-bg);min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:var(--spacing-md)}.skip-link{position:absolute;top:-100%;left:0;padding:var(--spacing-sm) var(--spacing-md);background:var(--color-accent);color:#fff;z-index:1000;text-decoration:none;font-weight:700}.skip-link:focus{top:0}main{width:100%;max-width:var(--max-width);margin:var(--spacing-lg) auto;flex:1}:focus-visible{outline:3px solid var(--color-focus-ring);outline-offset:2px}.site-header{width:100%;max-width:var(--max-width);text-align:center;padding:var(--spacing-lg) 0 var(--spacing-md)}.site-title{font-size:1.5rem;font-weight:700;color:var(--color-text)}.site-tagline{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-top:var(--spacing-xs)}.theme-nav{margin-top:var(--spacing-sm)}.site-footer{width:100%;max-width:var(--max-width);text-align:center;padding:var(--spacing-lg) 0;border-top:1px solid var(--color-border);margin-top:var(--spacing-xl)}.footer-security{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-style:italic}.loading{text-align:center;padding:var(--spacing-xl);color:var(--color-text-secondary)}.loading-spinner{display:inline-block;width:2rem;height:2rem;border:3px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.submission-form{display:flex;flex-direction:column;gap:var(--spacing-lg)}.form-group{display:flex;flex-direction:column;gap:var(--spacing-xs)}.form-label{font-weight:600;font-size:var(--font-size-sm);color:var(--color-text)}.form-label .optional-tag{font-weight:400;color:var(--color-text-secondary);font-size:var(--font-size-sm)}.form-input,.form-textarea{width:100%;padding:var(--spacing-sm) var(--spacing-md);font-family:var(--font-family);font-size:var(--font-size-base);color:var(--color-text);background-color:var(--color-bg);border:2px solid var(--color-border);border-radius:var(--border-radius);transition:border-color .15s ease}.form-input:focus,.form-textarea:focus{border-color:var(--color-accent)}.form-input.error,.form-textarea.error{border-color:var(--color-error)}.form-textarea{min-height:6rem;resize:vertical}.form-help{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.form-error{font-size:var(--font-size-sm);color:var(--color-error);display:none}.form-error.visible{display:block}.char-count{font-size:var(--font-size-sm);color:var(--color-text-secondary);text-align:right}.char-count.near-limit{color:var(--color-error)}.file-drop-zone{border:2px dashed var(--color-border);border-radius:var(--border-radius);padding:var(--spacing-xl);text-align:center;cursor:pointer;transition:border-color .15s ease,background-color .15s ease;position:relative}.file-drop-zone:hover,.file-drop-zone.drag-over{border-color:var(--color-accent);background-color:var(--color-bg-secondary)}.file-drop-zone.has-file{border-style:solid;border-color:var(--color-success)}.file-drop-zone.has-error{border-color:var(--color-error)}.file-drop-icon{font-size:2rem;margin-bottom:var(--spacing-sm);color:var(--color-text-secondary)}.file-drop-text{color:var(--color-text-secondary);font-size:var(--font-size-sm)}.file-drop-formats,.file-drop-maxsize{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin-top:var(--spacing-xs)}.file-input-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.file-preview{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm);background:var(--color-bg-secondary);border-radius:var(--border-radius);margin-top:var(--spacing-sm)}.file-preview-name{flex:1;font-size:var(--font-size-sm);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-preview-size{font-size:var(--font-size-sm);color:var(--color-text-secondary);white-space:nowrap}.file-remove-btn{background:none;border:none;color:var(--color-error);cursor:pointer;padding:var(--spacing-xs);font-size:var(--font-size-lg);line-height:1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-lg);font-family:var(--font-family);font-size:var(--font-size-base);font-weight:600;border:2px solid transparent;border-radius:var(--border-radius);cursor:pointer;transition:background-color .15s ease,border-color .15s ease;text-decoration:none;line-height:1.4}.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:transparent;color:var(--color-text);border-color:var(--color-border)}.btn-secondary:hover:not(:disabled){background-color:var(--color-bg-secondary)}.btn-danger{background-color:var(--color-error);color:#fff}.btn-small{padding:var(--spacing-xs) var(--spacing-sm);font-size:var(--font-size-sm)}.btn-full-width{width:100%}.progress-container{display:flex;flex-direction:column;gap:var(--spacing-md);padding:var(--spacing-lg)}.progress-bar-wrapper{width:100%;height:.75rem;background-color:var(--color-bg-secondary);border-radius:9999px;overflow:hidden;border:1px solid var(--color-border)}.progress-bar-fill{height:100%;background-color:var(--color-accent);border-radius:9999px;transition:width .3s ease;min-width:0}.progress-info{display:flex;justify-content:space-between;align-items:center;font-size:var(--font-size-sm);color:var(--color-text-secondary)}.progress-percent{font-weight:600;color:var(--color-text)}.progress-details{text-align:center;font-size:var(--font-size-sm);color:var(--color-text-secondary)}.progress-actions{text-align:center}.dialog-overlay{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100;padding:var(--spacing-md)}.dialog-content{background:var(--color-bg);border-radius:var(--border-radius);padding:var(--spacing-xl);max-width:480px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 4px 24px #0003}.dialog-title{font-size:var(--font-size-lg);font-weight:700;margin-bottom:var(--spacing-md)}.dialog-message{color:var(--color-text-secondary);margin-bottom:var(--spacing-lg)}.dialog-summary{list-style:none;padding:0;margin-bottom:var(--spacing-lg)}.dialog-summary li{display:flex;justify-content:space-between;padding:var(--spacing-xs) 0;border-bottom:1px solid var(--color-border);font-size:var(--font-size-sm)}.dialog-summary .field-status{color:var(--color-text-secondary)}.dialog-summary .field-status.filled{color:var(--color-success)}.dialog-actions{display:flex;gap:var(--spacing-sm);justify-content:flex-end}.receipt-container{text-align:center;padding:var(--spacing-xl)}.receipt-icon{font-size:3rem;margin-bottom:var(--spacing-md);color:var(--color-success)}.receipt-title{font-size:var(--font-size-lg);font-weight:700;margin-bottom:var(--spacing-sm)}.receipt-message{color:var(--color-text-secondary);margin-bottom:var(--spacing-lg)}.receipt-code{display:inline-block;padding:var(--spacing-sm) var(--spacing-lg);background:var(--color-bg-secondary);border:2px solid var(--color-border);border-radius:var(--border-radius);font-family:monospace;font-size:1.5rem;font-weight:700;letter-spacing:.1em;margin-bottom:var(--spacing-md);user-select:all}.receipt-actions{display:flex;flex-direction:column;gap:var(--spacing-sm);align-items:center}.theme-switcher{display:inline-flex;gap:var(--spacing-xs);padding:2px;background:var(--color-bg-secondary);border-radius:var(--border-radius);border:1px solid var(--color-border)}.theme-btn{padding:var(--spacing-xs) var(--spacing-sm);font-size:var(--font-size-sm);background:transparent;border:none;border-radius:calc(var(--border-radius) - 2px);cursor:pointer;color:var(--color-text-secondary);transition:background-color .15s ease,color .15s ease;font-family:var(--font-family)}.theme-btn:hover{color:var(--color-text)}.theme-btn.active{background:var(--color-bg);color:var(--color-text);box-shadow:0 1px 3px #0000001a}.error-banner{padding:var(--spacing-sm) var(--spacing-md);background:var(--color-error);color:#fff;border-radius:var(--border-radius);font-size:var(--font-size-sm);margin-bottom:var(--spacing-md)}.offline-banner{padding:var(--spacing-sm) var(--spacing-md);background:var(--color-bg-secondary);color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:var(--border-radius);font-size:var(--font-size-sm);text-align:center;margin-bottom:var(--spacing-md)}.qr-container{margin-top:var(--spacing-md)}.qr-container canvas{display:block;margin:0 auto}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.hidden{display:none!important}