:root{--theme-background: #ffffff;--theme-surface: #ffffff;--theme-surface-muted: #f8f9fa;--theme-surface-raised: #e8e8e8;--theme-text: #111111;--theme-muted: #666666;--theme-subtle: #777777;--theme-border: #cccccc;--theme-control-border: var(--theme-border);--theme-card-border: var(--theme-border);--theme-accent: #2563eb;--theme-accent-text: #2563eb;--theme-accent-surface: #eaf1ff;--theme-on-accent: #ffffff;--theme-rating: #fbbf24;--theme-table-header: #c5c5c5;--theme-control-muted: #cccccc;--translation-color: #0161e3;--color-correct-primary: #2e7d32;--color-correct-light: rgba(46, 125, 50, .2);--color-correct-lighter: rgba(46, 125, 50, .1);--color-incorrect-primary: #c62828;--color-incorrect-light: rgba(198, 40, 40, .2);--color-incorrect-lighter: rgba(198, 40, 40, .1);--color-revealed-primary: #f57c00;--color-revealed-light: rgba(245, 124, 0, .2);--color-revealed-lighter: rgba(245, 124, 0, .1);--color-selected-grey: #e0e0e0;--color-hover-grey: #f0f0f0;--color-disabled-grey: #f0f0f0;--color-border-grey: var(--theme-border)}:root[data-theme=dark]{--theme-background: #181c23;--theme-surface: #181c23;--theme-surface-muted: #1f242d;--theme-surface-raised: #232f43;--theme-text: #f4f6fb;--theme-muted: #aab3c1;--theme-subtle: #929cab;--theme-border: #3b424e;--theme-control-border: var(--theme-border);--theme-card-border: var(--theme-border);--theme-accent: #6098f8;--theme-accent-text: #8bb8ff;--theme-accent-surface: #232f43;--theme-on-accent: #0f1116;--theme-rating: #fbbf24;--theme-table-header: #293442;--theme-control-muted: #303946;--translation-color: #8ab8ff;--color-correct-primary: #70d18a;--color-incorrect-primary: #ff8b8b;--color-revealed-primary: #ffba70;--color-selected-grey: #232f43;--color-hover-grey: #1f242d;--color-disabled-grey: #1f242d;--color-border-grey: var(--theme-border)}:root[data-theme=dark] :is(.demo-page-button,.practice-page-button,.shuffle-button){filter:none}:root[data-theme=dark] 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.2s;width:100%;border-radius:8px}.submit-button:hover{background:var(--theme-surface-muted);color:var(--theme-text)}.submit-button:disabled{background:var(--theme-surface-muted);color:var(--theme-subtle);border-color:var(--theme-border);cursor:not-allowed}.next-container{margin-top:1.5rem;text-align:center}.next-button{background:var(--theme-surface);color:var(--theme-text);border:1px solid var(--theme-border);padding:.75rem 1.5rem;font-size:.9rem;cursor:pointer;transition:all .2s;border-radius:8px}.next-button:hover{background:var(--theme-surface-muted);color:var(--theme-text)}.navigation-container{margin-top:1.5rem;display:flex;justify-content:space-between;align-items:center;gap:1rem;width:100%}.previous-button{background:var(--theme-surface);color:var(--theme-text);border:1px solid var(--theme-border);padding:.75rem 1.5rem;font-size:.9rem;cursor:pointer;transition:all 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env(safe-area-inset-top)){body{padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}}@media screen and (-webkit-min-device-pixel-ratio:0){html,body,#root{background-color:var(--theme-background)!important}body{-webkit-overflow-scrolling:touch}}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}::-webkit-scrollbar{display:none}html{scrollbar-width:none}.construction-page{min-height:100vh;background:var(--theme-surface);display:flex;flex-direction:column;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;padding:0;overflow:hidden;position:relative}.construction-page:before{content:"";position:absolute;top:-120px;right:-120px;bottom:-120px;left:-120px;background:radial-gradient(900px 420px at 50% 10%,rgba(59,130,246,.1),transparent 60%),radial-gradient(700px 380px at 20% 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var(--theme-muted));--footer-border: var(--lp-border, var(--theme-border));width:100vw;margin:3rem calc(50% - 50vw) 0;border-top:1px solid var(--footer-border);background:var(--lp-bg, var(--theme-background));color:var(--footer-text);font-family:Urbanist,sans-serif;box-sizing:border-box}:root[data-theme=dark] .lp-footer{--footer-text: var(--theme-text);--footer-muted: var(--theme-muted);--footer-border: var(--theme-border)}.lp-footer--app{width:100%;margin-left:0;margin-right:0;align-self:stretch}.lp-footer-inner{width:100%;max-width:1180px;margin:0 auto;padding:2.5rem 2rem;box-sizing:border-box}.lp-footer-top{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;align-items:start;gap:3rem 4rem}.lp-footer-brand{max-width:34ch}.lp-footer-title{font-size:1.35rem;font-weight:800;letter-spacing:.1em}.lp-footer-subtitle{margin:.75rem 0 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h3{color:var(--theme-text);font-size:1.2rem;margin:0 0 .5rem;font-weight:700;text-transform:uppercase;font-family:Urbanist,sans-serif}.control-info p{color:var(--theme-muted);margin:0;font-size:1rem;line-height:1.4;font-family:Urbanist,sans-serif}.toggle-container{display:flex;align-items:center;gap:1rem;flex-shrink:0}.toggle-btn{position:relative;width:60px;height:30px;background:var(--theme-control-muted);border:1px solid var(--theme-border);border-radius:8px;cursor:pointer;transition:all .3s ease}.toggle-btn.active{background:#000;border-color:var(--theme-text)}.toggle-slider{position:absolute;top:2px;left:2px;width:24px;height:24px;background:var(--theme-surface);border-radius:6px;transition:all .3s ease}.toggle-btn.active .toggle-slider{transform:translate(28px)}.toggle-label{font-size:.9rem;font-weight:700;color:var(--theme-muted);min-width:30px;font-family:Urbanist,sans-serif}.users-table-container{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--theme-border);border-radius:8px}.users-table{width:100%;border-collapse:collapse;min-width:800px;font-family:Urbanist,sans-serif}.users-table th,.users-table td{padding:1rem;text-align:left;border-bottom:1px solid var(--theme-border)}.users-table th{background:var(--theme-surface-muted);color:var(--theme-text);font-weight:700;text-transform:uppercase;font-size:.9rem;font-family:Urbanist,sans-serif}.users-table td{color:var(--theme-muted);font-family:Urbanist,sans-serif}.users-table tbody tr:hover{background:var(--theme-surface-muted)}.users-table tbody tr:last-child td{border-bottom:none}.status-badge{padding:.4rem .8rem;font-size:.8rem;font-weight:700;border-radius:8px;font-family:Urbanist,sans-serif}.status-badge.active{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.status-badge.expired{background:#fee;color:#c33;border:1px solid #fcc}.user-actions{display:flex;gap:.5rem;flex-wrap:wrap}.grant-access-btn{background:#28a745;color:#fff;border:1px solid #28a745;border-radius:8px;padding:.5rem 1rem;cursor:pointer;font-size:.8rem;font-weight:700;transition:all .3s ease;min-height:44px;font-family:Urbanist,sans-serif;text-transform:uppercase}.grant-access-btn:hover{background:#218838;border-color:#218838;transform:translateY(-2px);box-shadow:0 4px 8px #28a7454d}.delete-user-btn{background:#dc3545;color:#fff;border:1px solid #dc3545;border-radius:8px;padding:.5rem 1rem;cursor:pointer;font-size:.8rem;font-weight:700;transition:all .3s ease;min-height:44px;font-family:Urbanist,sans-serif;text-transform:uppercase}.delete-user-btn:hover{background:#c82333;border-color:#c82333;transform:translateY(-2px);box-shadow:0 4px 8px #dc35454d}.delete-confirmation-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;padding:1rem;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.delete-confirmation-dialog{background:var(--theme-surface);border:1px solid 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