*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}:root{--primary:#e65100;--primary-light:#ff833a;--primary-dark:#ac1900;--secondary:#1565c0;--secondary-light:#5e92f3;--secondary-dark:#003c8f;--success:#2e7d32;--danger:#c62828;--warning:#f9a825;--bg:#f5f5f5;--bg-card:#fff;--text:#212121;--text-light:#616161;--border:#e0e0e0;--radius:12px;--shadow:0 2px 8px #0000001a;--shadow-hover:0 4px 16px #00000026;--footer-bg:#333;--footer-text:#ccc;--footer-link:#aaa}[data-theme=dark]{--bg:#121212;--bg-card:#1e1e1e;--text:#e0e0e0;--text-light:#b0b0b0;--border:#333;--shadow:0 2px 8px #0006;--shadow-hover:0 4px 16px #00000080;--footer-bg:#1a1a1a;--footer-text:#999;--footer-link:#bbb}[data-theme=dark] .quiz-option:hover:not(:disabled),[data-theme=dark] .quiz-option.selected{background:#2a2a2a}[data-theme=dark] .quiz-option.correct{background:#1b3a1b}[data-theme=dark] .quiz-option.incorrect{background:#3a1b1b}[data-theme=dark] .admin-level-btn{background:var(--bg-card);color:var(--text)}[data-theme=dark] .admin-level-btn.active,[data-theme=dark] .admin-level-btn:hover{background:#2a2a2a}[data-theme=dark] .btn-secondary{color:var(--text);background:#333}[data-theme=dark] .btn-secondary:hover{background:#444}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}.app{flex-direction:column;min-height:100vh;display:flex}.main-content{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:20px}.loading-screen{flex-direction:column;justify-content:center;align-items:center;gap:16px;height:100vh;display:flex}.loading-spinner{border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:48px;height:48px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading{text-align:center;color:var(--text-light);padding:40px}.navbar{background:var(--primary);color:#fff;z-index:100;justify-content:space-between;align-items:center;height:60px;padding:0 20px;display:flex;position:sticky;top:0;box-shadow:0 2px 4px #0003}.navbar-brand a{color:#fff;font-size:1.4rem;font-weight:700}.navbar-links{align-items:center;gap:8px;display:flex}.navbar-links a{color:#ffffffe6;border-radius:8px;padding:8px 16px;font-weight:500;transition:background .2s}.navbar-links a:hover{color:#fff;background:#ffffff26}.navbar-links a.active{color:#fff;background:#ffffff40}.hamburger{cursor:pointer;background:0 0;border:none;flex-direction:column;gap:5px;padding:4px;display:none}.hamburger-line{background:#fff;border-radius:2px;width:24px;height:3px;transition:transform .3s,opacity .3s;display:block}.hamburger-line.open:first-child{transform:rotate(45deg)translate(5px,6px)}.hamburger-line.open:nth-child(2){opacity:0}.hamburger-line.open:nth-child(3){transform:rotate(-45deg)translate(5px,-6px)}.dark-toggle{cursor:pointer;background:#ffffff26;border:none;border-radius:8px;padding:6px 12px;font-size:1.1rem;transition:background .2s}.dark-toggle:hover{background:#ffffff40}.footer{background:var(--footer-bg);color:var(--footer-text);text-align:center;margin-top:40px;padding:20px;font-size:.9rem}.footer-links{margin-top:8px}.footer-links button{color:var(--footer-link);cursor:pointer;background:0 0;border:none;font-size:.9rem}.footer-links button:hover{color:#fff}.footer-links span{color:var(--footer-link);margin:0 8px}.modal-overlay{z-index:200;background:#0009;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal-content{background:var(--bg-card);color:var(--text);border-radius:var(--radius);width:100%;max-width:500px;padding:32px;position:relative;box-shadow:0 8px 32px #0000004d}.modal-content h2{margin-bottom:16px}.modal-content p{color:var(--text-light);line-height:1.7}.modal-close{cursor:pointer;color:var(--text-light);background:0 0;border:none;font-size:1.3rem;position:absolute;top:12px;right:16px}.modal-close:hover{color:var(--text)}.cookie-bar{background:var(--bg-card);color:var(--text);z-index:300;border-top:2px solid var(--primary);flex-wrap:wrap;justify-content:center;align-items:center;gap:16px;padding:14px 24px;display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -2px 16px #0003}.cookie-bar p{color:var(--text-light);margin:0;font-size:.9rem;line-height:1.5}.cookie-link{color:var(--primary);cursor:pointer;font-size:inherit;background:0 0;border:none;padding:0;text-decoration:underline}.cookie-link:hover{color:var(--primary-dark,#bf360c)}.cookie-accept{white-space:nowrap;padding:8px 24px;font-size:.9rem}.policy-modal{text-align:left;max-width:640px;max-height:80vh;overflow-y:auto}.policy-updated{color:var(--text-light);margin-bottom:20px;font-size:.8rem}.policy-section{margin-bottom:24px}.policy-section h3{color:var(--text);border-bottom:1px solid var(--border);margin-bottom:10px;padding-bottom:6px;font-size:1.05rem}.policy-section p{color:var(--text-light);margin-bottom:10px;line-height:1.7}.policy-section ul{color:var(--text-light);margin:10px 0;padding-left:22px;line-height:1.7}.policy-section ul li{margin-bottom:6px}.policy-actions{border-top:1px solid var(--border);justify-content:center;gap:12px;margin-top:20px;padding-top:16px;display:flex}.policy-close-btn{margin:20px auto 0;display:block}@media (width<=600px){.cookie-bar{text-align:center;flex-direction:column;gap:12px;padding:16px}}.modal-content ul{color:var(--text-light);margin:12px 0;padding-left:24px;line-height:1.7}.modal-content ul li{margin-bottom:6px}.btn{cursor:pointer;text-align:center;border:none;border-radius:8px;padding:10px 20px;font-size:.95rem;font-weight:600;transition:all .2s;display:inline-block}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:var(--border);color:var(--text)}.btn-secondary:hover{background:#bdbdbd}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#b71c1c}.btn-large{padding:14px 32px;font-size:1.1rem}.btn-sm{padding:6px 12px;font-size:.85rem}.btn:disabled{opacity:.5;cursor:not-allowed}.page{padding-bottom:20px}.page-header{margin-bottom:24px}.page-header h1{margin-top:8px;font-size:1.8rem}.back-link{color:var(--primary);font-weight:500}.back-link:hover{text-decoration:underline}.subtitle{color:var(--text-light);font-style:italic}.hero{text-align:center;background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;border-radius:var(--radius);margin-bottom:32px;padding:60px 20px}.hero h1{margin-bottom:12px;font-size:2.8rem}.hero-subtitle{opacity:.9;margin-bottom:8px;font-size:1.3rem}.hero-description{opacity:.85;max-width:600px;margin:0 auto 24px}.features{margin:40px 0}.feature-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;display:grid}.feature-card{background:var(--bg-card);border-radius:var(--radius);text-align:center;box-shadow:var(--shadow);padding:24px;transition:transform .2s,box-shadow .2s}.feature-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}.feature-icon{margin-bottom:12px;font-size:2.5rem}.feature-card h3{margin-bottom:8px}.feature-card p{color:var(--text-light);font-size:.9rem}.level-preview{margin:40px 0}.level-preview h2{text-align:center;margin-bottom:24px;font-size:1.6rem}.level-cards{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;display:grid}.level-card{border-radius:var(--radius);color:#fff;box-shadow:var(--shadow);padding:24px;transition:transform .2s}.level-card:hover{transform:translateY(-4px)}.level-a0{background:linear-gradient(135deg,#4caf50,#2e7d32)}.level-a1{background:linear-gradient(135deg,#2196f3,#1565c0)}.level-a2{background:linear-gradient(135deg,#ff9800,#e65100)}.level-card h3{margin-bottom:8px;font-size:1.3rem}.level-topics{opacity:.85;margin-top:8px;font-size:.85rem;display:block}.levels-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-top:24px;display:grid}.level-card-full{border-radius:var(--radius);box-shadow:var(--shadow);border:3px solid;transition:transform .2s,box-shadow .2s;overflow:hidden}.level-card-full:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}.level-header{color:#fff;text-align:center;padding:24px}.level-header h2{font-size:2rem}.level-badge{opacity:.9;font-size:.9rem}.level-body{text-align:center;padding:20px}.level-desc{color:var(--text-light);margin-bottom:8px;font-size:.9rem;line-height:1.5}.level-lesson-count{margin-bottom:10px;font-size:.95rem;font-weight:600}.level-topics-preview{flex-wrap:wrap;justify-content:center;gap:6px;margin-bottom:12px;display:flex}.topic-chip{background:var(--bg);border:1px solid var(--border);color:var(--text-light);white-space:nowrap;border-radius:20px;align-items:center;gap:3px;padding:3px 10px;font-size:.75rem;display:inline-flex}.topic-chip-icon{font-size:.8rem}.progress-bar-container{background:var(--border);border-radius:10px;height:12px;margin:8px 0;overflow:hidden}.progress-bar-container.large{height:20px}.progress-bar-fill{background:var(--primary);border-radius:10px;height:100%;transition:width .5s}.progress-text{color:var(--text-light);font-size:.9rem}.lessons-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin-top:16px;display:grid}.lesson-card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;transition:transform .2s}.lesson-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}.lesson-card-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.lesson-number{color:var(--text-light);font-size:.85rem;font-weight:600}.badge-completed{background:var(--success);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:.8rem;display:flex}.dutch-title{color:var(--text-light);font-size:.9rem;font-style:italic}.lesson-meta{color:var(--text-light);margin:8px 0;font-size:.85rem}.lesson-score{color:var(--secondary);font-size:.85rem}.lesson-actions{gap:8px;margin-top:12px;display:flex}.lesson-actions .btn{flex:1}.level-progress-summary{align-items:center;gap:12px;margin-top:8px;display:flex}.level-progress-summary .progress-bar-container{flex:1;max-width:300px}.progress-label{color:var(--text-light);white-space:nowrap;font-size:.85rem}.toc-toolbar{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px;display:flex}.toc-toolbar .lesson-search{flex:1;min-width:200px}.toc-controls{gap:8px;display:flex}.toc-groups{flex-direction:column;gap:8px;display:flex}.toc-group{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);border-left:4px solid var(--primary);transition:border-color .2s;overflow:hidden}.toc-group.group-done{border-left-color:var(--success)}.toc-group-header{cursor:pointer;text-align:left;width:100%;color:var(--text);background:0 0;border:none;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;font-size:1rem;transition:background .15s;display:flex}.toc-group-header:hover{background:#00000008}[data-theme=dark] .toc-group-header:hover{background:#ffffff0a}.toc-group-left{flex:1;align-items:center;gap:12px;min-width:0;display:flex}.toc-group-icon{flex-shrink:0;font-size:1.4rem}.toc-group-meta{flex-direction:column;min-width:0;display:flex}.toc-group-label{font-size:.95rem;font-weight:600}.toc-group-desc{color:var(--text-light);white-space:nowrap;text-overflow:ellipsis;font-size:.8rem;overflow:hidden}.toc-group-right{flex-shrink:0;align-items:center;gap:10px;display:flex}.toc-group-progress{color:var(--text-light);white-space:nowrap;font-size:.8rem;font-weight:600}.toc-group-bar{background:var(--border);border-radius:3px;width:60px;height:6px;overflow:hidden}.toc-group-bar-fill{background:var(--primary);border-radius:3px;height:100%;transition:width .3s}.group-done .toc-group-bar-fill{background:var(--success)}.toc-chevron{color:var(--text-light);font-size:.9rem;transition:transform .2s}.toc-chevron.open{transform:rotate(180deg)}.toc-group-body{border-top:1px solid var(--border)}.toc-lesson-row{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:10px 16px 10px 20px;transition:background .15s;display:flex}.toc-lesson-row:last-child{border-bottom:none}.toc-lesson-row:hover{background:#00000005}[data-theme=dark] .toc-lesson-row:hover{background:#ffffff08}.toc-lesson-row.completed{opacity:.75}.toc-lesson-status{flex-shrink:0;justify-content:center;width:24px;display:flex}.status-done{background:var(--success);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;font-size:.75rem;font-weight:700;display:flex}.status-circle{border:2px solid var(--border);border-radius:50%;width:18px;height:18px}.toc-lesson-info{flex-wrap:wrap;flex:1;align-items:baseline;gap:8px;min-width:0;display:flex}.toc-lesson-num{color:var(--text-light);white-space:nowrap;font-size:.8rem;font-weight:600}.toc-lesson-title{font-size:.9rem;font-weight:500}.toc-lesson-dutch{color:var(--text-light);font-size:.8rem;font-style:italic}.toc-lesson-score{color:var(--secondary);white-space:nowrap;font-size:.8rem;font-weight:600}.toc-lesson-actions{flex-shrink:0;gap:6px;display:flex}.toc-search-results{margin-bottom:16px}.no-results{text-align:center;color:var(--text-light);padding:32px}.view-controls{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:24px;padding:16px;display:flex}.toggle-label{cursor:pointer;align-items:center;gap:6px;font-size:.9rem;display:flex}.sentences-list{flex-direction:column;gap:16px;display:flex}.sentence-card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);gap:16px;padding:20px;display:flex}.sentence-number{background:var(--primary);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-weight:700;display:flex}.sentence-content{flex:1}.dutch-text{color:var(--primary-dark);margin-bottom:4px;font-size:1.15rem;font-weight:600}.dutch-text.large{font-size:1.5rem}.pronunciation-text{color:var(--text-light);font-size:.95rem}.english-text{color:var(--secondary);font-size:.95rem}.sentence-card,.flashcard,.quiz-question{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.sentence-card img,.flashcard img{pointer-events:none;-webkit-user-drag:none}.flashcard-container{text-align:center}.flashcard{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);flex-direction:column;justify-content:center;align-items:center;gap:12px;min-height:240px;margin-bottom:20px;padding:48px 32px;display:flex}.flashcard-counter{color:var(--text-light);font-size:.9rem}.flashcard-nav{justify-content:center;gap:16px;display:flex}.lesson-nav-bottom{text-align:center;margin-top:32px}.quiz-progress{margin-bottom:24px}.quiz-progress-bar{background:var(--border);border-radius:10px;height:8px;margin-bottom:8px;overflow:hidden}.quiz-progress-fill{background:var(--primary);border-radius:10px;height:100%;transition:width .3s}.quiz-progress-text,.quiz-score-text{color:var(--text-light);margin-right:16px;font-size:.9rem}.quiz-question-card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px}.quiz-question{margin-bottom:24px;font-size:1.25rem;line-height:1.5}.quiz-options{flex-direction:column;gap:12px;display:flex}.quiz-option{border:2px solid var(--border);border-radius:var(--radius);background:var(--bg-card);cursor:pointer;text-align:left;padding:16px 20px;font-size:1rem;transition:all .2s}.quiz-option:hover:not(:disabled),.quiz-option.selected{border-color:var(--primary);background:#fff3e0}.quiz-option.correct{border-color:var(--success);color:var(--success);background:#e8f5e9}.quiz-option.incorrect{border-color:var(--danger);color:var(--danger);background:#ffebee}.quiz-feedback{text-align:center;margin-top:20px}.feedback-correct{color:var(--success);margin-bottom:12px;font-size:1.1rem;font-weight:600}.feedback-incorrect{color:var(--danger);margin-bottom:12px;font-size:1.1rem}.quiz-results{text-align:center;padding:40px 20px}.score-display{margin:24px 0}.score-circle{border:6px solid;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:140px;height:140px;margin-bottom:12px;display:inline-flex}.score-circle.passed{border-color:var(--success);color:var(--success)}.score-circle.failed{border-color:var(--danger);color:var(--danger)}.score-number{font-size:2.5rem;font-weight:700}.score-total{font-size:1.1rem}.score-percentage{font-size:1.5rem;font-weight:600}.attempts-info{color:var(--text-light);margin-top:12px}.quiz-result-actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:24px;display:flex}.overall-stats{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px;margin:24px 0;display:grid}.stat-card{background:var(--bg-card);border-radius:var(--radius);text-align:center;box-shadow:var(--shadow);padding:24px 16px}.stat-number{color:var(--primary);font-size:2rem;font-weight:700}.stat-label{color:var(--text-light);margin-top:4px;font-size:.85rem}.overall-progress-bar{text-align:center;margin-bottom:32px}.level-progress-section{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:32px;padding:24px}.level-progress-section h2{margin-bottom:12px}.progress-summary{color:var(--text-light);margin:8px 0 16px;font-size:.9rem}.progress-lesson-grid{grid-template-columns:repeat(auto-fill,minmax(60px,1fr));gap:8px;display:grid}.progress-lesson-tile{text-align:center;border:2px solid var(--border);border-radius:8px;padding:8px;font-size:.85rem;transition:transform .2s}.progress-lesson-tile:hover{transform:scale(1.05)}.progress-lesson-tile.completed{border-color:var(--success);background:#e8f5e9}.progress-lesson-tile.attempted{border-color:var(--warning);background:#fff3e0}.progress-lesson-tile.not-started{background:var(--bg-card)}.tile-number{font-weight:700;display:block}.tile-score{color:var(--text-light);font-size:.75rem;display:block}.admin-login{text-align:center;max-width:400px;margin:40px auto}.admin-login input{border:2px solid var(--border);border-radius:8px;width:100%;margin:16px 0;padding:12px;font-size:1rem;display:block}.admin-message{background:#e8f5e9;border-radius:8px;margin-bottom:16px;padding:12px 20px;font-weight:500}.admin-message.error{color:var(--danger);background:#ffebee}.admin-toolbar{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);flex-wrap:wrap;gap:12px;margin-bottom:24px;padding:16px;display:flex}.file-upload-btn{cursor:pointer}.admin-content{grid-template-columns:240px 1fr;gap:24px;display:grid}.admin-sidebar{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);align-self:start;padding:16px;position:sticky;top:80px}.admin-sidebar h3{margin-bottom:12px}.admin-level-btn{border:2px solid var(--border);cursor:pointer;text-align:left;background:#fff;border-radius:8px;width:100%;margin-bottom:8px;padding:12px;font-weight:500;transition:all .2s;display:block}.admin-level-btn.active,.admin-level-btn:hover{border-color:var(--primary);background:#fff3e0}.admin-section-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.admin-lessons-list{flex-direction:column;gap:8px;display:flex}.admin-lesson-item{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.admin-lesson-info{flex:1}.item-count{color:var(--text-light);font-size:.85rem}.admin-lesson-actions{gap:8px;display:flex}.admin-edit-form{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.form-group{margin-bottom:16px}.form-group label{margin-bottom:6px;font-weight:600;display:block}.form-group input{border:2px solid var(--border);border-radius:8px;width:100%;padding:10px;font-size:.95rem}.admin-item-form{border:1px solid var(--border);border-radius:8px;margin-bottom:12px;padding:12px}.admin-item-header{justify-content:space-between;align-items:center;margin-bottom:8px;font-weight:600;display:flex}.admin-item-form input{border:1px solid var(--border);border-radius:6px;width:100%;margin-bottom:6px;padding:8px;font-size:.9rem}.admin-form-actions{flex-wrap:wrap;gap:12px;margin-top:16px;display:flex}.admin-welcome{text-align:center;padding:40px}.admin-welcome ul{margin-top:16px;list-style:none}.admin-welcome li{color:var(--text-light);padding:4px 0}.continue-section{margin-bottom:32px}.continue-section h2{text-align:center;margin-bottom:16px;font-size:1.4rem}.continue-card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);border-left:4px solid var(--primary);align-items:center;gap:16px;padding:20px;transition:transform .2s,box-shadow .2s;display:flex}.continue-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}.continue-level{background:var(--primary);color:#fff;border-radius:8px;padding:8px 14px;font-size:.9rem;font-weight:700}.continue-info{flex:1}.continue-info strong{margin-bottom:4px;display:block}.continue-info span{color:var(--text-light);font-size:.85rem}.continue-arrow{color:var(--primary);font-size:1.5rem}.lesson-search{margin-bottom:16px}.search-input{border:2px solid var(--border);border-radius:var(--radius);background:var(--bg-card);width:100%;color:var(--text);padding:12px 16px;font-size:1rem;transition:border-color .2s}.search-input:focus{border-color:var(--primary);outline:none}.search-input::placeholder{color:var(--text-light)}.prev-score-badge{background:var(--secondary);color:#fff;border-radius:16px;margin-top:8px;padding:4px 12px;font-size:.85rem;display:inline-block}@keyframes slideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.quiz-question-card{animation:.3s ease-out slideIn}.option-key{background:var(--border);border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;margin-right:12px;font-size:.75rem;font-weight:700;display:inline-flex}.ad-banner{text-align:center;max-height:100px;margin:16px 0;overflow:hidden}.ad-banner ins{background:0 0;max-height:90px}@media (width<=768px){.hamburger{display:flex}.navbar{flex-wrap:wrap;height:auto;padding:12px 16px}.navbar-links{flex-direction:column;gap:4px;width:100%;padding-top:12px;display:none}.navbar-links.show{display:flex}.navbar-links a{text-align:center;padding:10px 16px;font-size:.95rem}.dark-toggle{text-align:center;width:100%;padding:10px}.hero h1{font-size:1.8rem}.hero{padding:40px 16px}.main-content{padding:12px}.admin-content{grid-template-columns:1fr}.admin-sidebar{position:static}.feature-grid{grid-template-columns:repeat(2,1fr);gap:12px}.level-cards,.lessons-grid,.levels-grid{grid-template-columns:1fr}.toc-group-desc,.toc-group-bar{display:none}.toc-lesson-row{flex-wrap:wrap;gap:8px;padding:10px 12px 10px 16px}.toc-lesson-info{flex-basis:calc(100% - 80px)}.toc-lesson-actions{margin-left:auto}.toc-lesson-dutch{display:none}.level-topics-preview{gap:4px}.topic-chip{padding:2px 8px;font-size:.7rem}.ad-banner{max-height:70px;margin:10px 0}.ad-banner ins{max-height:60px}.quiz-question{font-size:1.05rem}.quiz-question-card{padding:20px}.flashcard{padding:32px 16px}.continue-card{text-align:center;flex-direction:column}.continue-arrow{display:none}}