:root{color-scheme:light;--bg-page: #f5f5f5;--bg-surface: #ffffff;--bg-header: #2c3e50;--text-primary: #2c3e50;--text-secondary: #7f8c8d;--text-h3: #34495e;--text-on-header: #ffffff;--border: #ecf0f1;--border-input: #ddd;--bg-table-th: #ecf0f1;--bg-table-hover: #f8f9fa;--bg-ticket-header: #e8f4f8;--bg-info: #e8f4f8;--bg-instructions: #f8f9fa;--bg-url-display: #f8f9fa;--bg-disabled: #f5f5f5;--bg-warning: #fff3cd;--text-warning-title: #d68910;--text-warning-body: #856404;--bg-error: #ffe6e6;--border-error: #ffcccc;--text-error: #c0392b;--bg-autocomplete-hover: #f0f8ff;--autocomplete-border: #f5f5f5;--btn-close: #95a5a6;--shadow: rgba(0, 0, 0, .1);--shadow-modal: rgba(0, 0, 0, .2);--nav-link: rgba(255, 255, 255, .8);--nav-hover-bg: rgba(255, 255, 255, .1);--nav-active-bg: rgba(255, 255, 255, .2);--theme-active-bg: rgba(52, 152, 219, .1)}[data-theme=dark]{color-scheme:dark;--bg-page: #121212;--bg-surface: #1e1e1e;--bg-header: #0f1923;--text-primary: #e2e8f0;--text-secondary: #9ea7b2;--text-h3: #a0aec0;--text-on-header: #e2e8f0;--border: #2d3748;--border-input: #4a5568;--bg-table-th: #2d3748;--bg-table-hover: #252525;--bg-ticket-header: #1a2d3d;--bg-info: #1a2d3d;--bg-instructions: #252525;--bg-url-display: #252525;--bg-disabled: #2a2a2a;--bg-warning: #2d2300;--text-warning-title: #f0a500;--text-warning-body: #c8860a;--bg-error: #3d1515;--border-error: #5a2020;--text-error: #fc8181;--bg-autocomplete-hover: #1a2d3d;--autocomplete-border: #2d3748;--btn-close: #718096;--shadow: rgba(0, 0, 0, .3);--shadow-modal: rgba(0, 0, 0, .5);--nav-link: rgba(255, 255, 255, .75);--nav-hover-bg: rgba(255, 255, 255, .08);--nav-active-bg: rgba(255, 255, 255, .15);--theme-active-bg: rgba(52, 152, 219, .2)}@media (prefers-color-scheme: dark){:root:not([data-theme]){color-scheme:dark;--bg-page: #121212;--bg-surface: #1e1e1e;--bg-header: #0f1923;--text-primary: #e2e8f0;--text-secondary: #9ea7b2;--text-h3: #a0aec0;--text-on-header: #e2e8f0;--border: #2d3748;--border-input: 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0}.theme-toggle{display:flex;flex-direction:column;align-items:center;gap:.25rem;padding:.75rem 1.5rem;border:2px solid transparent;background:transparent;cursor:pointer;border-radius:8px;transition:all .2s;opacity:.5;color:var(--text-primary)}.theme-toggle-icon{font-size:1.75rem}.theme-toggle-label{font-size:.8rem}.theme-toggle:hover{opacity:.8;transform:scale(1.05)}.theme-toggle.active{opacity:1;border-color:#3498db;background:var(--theme-active-bg)}.settings-section{padding:1.5rem 0;border-bottom:1px solid var(--border)}.settings-section:last-child{border-bottom:none}.settings-section h3{color:var(--text-primary);margin-bottom:.5rem;font-size:1.1rem}.settings-description{color:var(--text-secondary);font-size:.9rem;margin-bottom:1rem}.expiry-controls{margin-top:1rem}.expiry-controls label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-primary)}.expiry-input-group{display:flex;align-items:center;gap:.5rem}.expiry-input-group input[type=number],.expiry-input-group 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