@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";@import"https://fonts.googleapis.com/css2?family=Merriweather:ital,wght@0,300;0,400;0,700;1,400&display=swap";html,body,#root{height:100%}.unknown-word{background-color:#ffc8004d;border-bottom:2px solid #ffc107;cursor:pointer;padding:0 2px;border-radius:2px;transition:background-color .2s}.unknown-word:hover{background-color:#ffc80080}.word-popup-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.word-popup{background:var(--card-bg, white);padding:2rem;border-radius:8px;max-width:400px;width:90%;box-shadow:0 4px 6px #0000001a}.word-popup h3{margin-bottom:1rem;color:var(--text-color, #333);font-size:1.5rem}.completion-modal-overlay{position:fixed;inset:0;background:#000000bf;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s ease-out}.completion-modal-content{background:var(--bg-card, #ffffff);border-radius:16px;padding:2.5rem;max-width:500px;width:90%;box-shadow:0 20px 60px #0000004d;position:relative;animation:slideInScale .3s ease-out}@keyframes slideInScale{0%{opacity:0;transform:translateY(-20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.completion-modal-close{position:absolute;top:1rem;right:1rem;background:none;border:none;font-size:1.5rem;color:var(--text-muted, #6b7280);cursor:pointer;padding:.5rem;line-height:1;transition:color .2s}.completion-modal-close:hover{color:var(--text-main, #1e293b)}.completion-modal-header{text-align:center;margin-bottom:1.5rem}.completion-checkmark{width:80px;height:80px;margin:0 auto 1rem;background:linear-gradient(135deg,#10b981,#059669);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:3rem;font-weight:700;animation:checkmarkPop .5s ease-out .2s backwards;box-shadow:0 8px 24px #10b9814d}@keyframes checkmarkPop{0%{transform:scale(0);opacity:0}50%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}.completion-modal-header h2{margin:0 0 .5rem;color:var(--text-main, #1e293b);font-size:1.75rem}.completion-chapter-title{color:var(--text-muted, #6b7280);font-size:1rem;margin:0}.completion-motivation{background:linear-gradient(135deg,#6366f11a,#8b5cf61a);border-left:4px solid var(--primary-color, #6366f1);padding:1rem 1.5rem;border-radius:8px;margin-bottom:2rem;font-size:1rem;line-height:1.5;color:var(--text-main, #1e293b)}.completion-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-bottom:2rem}.completion-stat-card{background:var(--bg-app, #f8fafc);padding:1.5rem;border-radius:12px;text-align:center;transition:transform .2s}.completion-stat-card:hover{transform:translateY(-2px)}.stat-icon{font-size:2rem;margin-bottom:.5rem}.stat-label{font-size:.875rem;color:var(--text-muted, #6b7280);margin-bottom:.5rem}.stat-value{font-size:1.5rem;font-weight:700;color:var(--primary-color, #6366f1)}.completion-actions{display:flex;gap:.75rem;flex-wrap:wrap;justify-content:center}.completion-actions-single{display:flex;justify-content:center}.btn-completion{padding:.875rem 1.5rem;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;flex:1;min-width:140px}.btn-completion.btn-primary{background:var(--primary-color, #6366f1);color:#fff}.btn-completion.btn-primary:hover{background:var(--primary-dark, #4f46e5);transform:translateY(-1px);box-shadow:0 4px 12px #6366f14d}.btn-completion.btn-secondary{background:var(--bg-app, #f1f5f9);color:var(--text-main, #1e293b);border:2px solid var(--border-color, #e2e8f0)}.btn-completion.btn-secondary:hover{background:var(--bg-card, #ffffff);border-color:var(--primary-color, #6366f1)}.btn-completion.btn-replay{background:var(--success, #10b981);color:#fff}.btn-completion.btn-replay:hover{background:#059669;transform:translateY(-1px);box-shadow:0 4px 12px #10b9814d}@media(max-width:640px){.completion-modal-content{padding:2rem 1.5rem;width:95%}.completion-stats{grid-template-columns:1fr}.completion-actions{flex-direction:column}.btn-completion{width:100%}.completion-checkmark{width:60px;height:60px;font-size:2.5rem}.completion-modal-header h2{font-size:1.5rem}}.theme-toggle{display:flex;align-items:center;gap:1rem;padding:.75rem 1rem;background:var(--bg-card, #ffffff);border-radius:8px;border:1px solid var(--border-color, #e2e8f0)}.theme-toggle-label{font-size:.875rem;color:var(--text-muted, #6b7280);font-weight:500}.theme-toggle-buttons{display:flex;gap:.5rem}.theme-btn{padding:.5rem 1rem;border-radius:6px;border:2px solid var(--border-color, #e2e8f0);background:transparent;color:var(--text-main, #1e293b);cursor:pointer;font-size:.875rem;font-weight:500;transition:all .2s;display:flex;align-items:center;gap:.25rem}.theme-btn:hover:not(:disabled){border-color:var(--primary-color, #6366f1);background:var(--bg-app, #f8fafc)}.theme-btn.active{background:var(--primary-color, #6366f1);border-color:var(--primary-color, #6366f1);color:#fff}.theme-btn:disabled{opacity:.6;cursor:not-allowed}[data-theme=dark] .theme-toggle{background:var(--bg-card);border-color:var(--border-color)}[data-theme=dark] .theme-toggle-label{color:var(--text-muted)}[data-theme=dark] .theme-btn{background:var(--bg-app);color:var(--text-main);border-color:var(--border-color)}[data-theme=dark] .theme-btn:hover:not(:disabled){background:var(--bg-card);border-color:var(--primary)}[data-theme=dark] .theme-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}@media(max-width:768px){.theme-toggle{flex-direction:column;align-items:flex-start;gap:.5rem}.theme-toggle-buttons{width:100%}.theme-btn{flex:1;justify-content:center}}.settings-container{max-width:800px;margin:0 auto;padding:2rem 1rem}.settings-header{margin-bottom:2rem}.settings-header h1{margin-top:1rem;color:var(--text-main);font-size:2rem}.settings-content{display:flex;flex-direction:column;gap:2rem}.settings-section h2{color:var(--text-main);font-size:1.25rem;margin-bottom:1rem;font-weight:600}.settings-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:1.5rem;box-shadow:var(--shadow-sm)}.settings-description{color:var(--text-muted);margin-bottom:1.5rem;line-height:1.6}.user-info-display{display:flex;align-items:center;gap:1.5rem}.user-avatar-large{width:80px;height:80px;border-radius:50%;border:3px solid var(--primary)}.user-name-large{font-size:1.5rem;font-weight:600;color:var(--text-main);margin:0}.user-email{color:var(--text-muted);margin:.25rem 0 0}.account-badge{display:inline-block;margin-top:.75rem;padding:.35rem .75rem;border-radius:50px;font-size:.8rem;font-weight:600}.account-badge.premium{background:linear-gradient(135deg,#fef3c7,#fde68a);color:#92400e}.account-badge.free{background:#f1f5f9;color:#64748b}.stats-cards-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:1.5rem}.stats-time-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:1.25rem;display:flex;align-items:center;gap:1rem;transition:all .2s ease}.stats-time-card:hover{border-color:var(--primary);box-shadow:0 4px 12px #6366f11a}.stats-time-card.highlight{background:linear-gradient(135deg,#eef2ff,#e0e7ff);border-color:#a5b4fc}.stats-time-icon{font-size:1.75rem;flex-shrink:0}.stats-time-content{display:flex;flex-direction:column;min-width:0}.stats-time-value{font-size:1.25rem;font-weight:700;color:var(--text-main);white-space:nowrap}.stats-time-label{font-size:.8rem;color:var(--text-muted);font-weight:500}.stats-chart-card{margin-bottom:1.5rem}.stats-chart-title{font-size:1rem;font-weight:600;color:var(--text-main);margin:0 0 1rem}.stats-chart-container{width:100%;height:200px}.stats-chart-tooltip{background:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;padding:.75rem 1rem;box-shadow:var(--shadow-md)}.tooltip-date{font-weight:600;color:var(--text-main);margin:0 0 .25rem}.tooltip-value{color:var(--primary);font-weight:700;font-size:1.1rem;margin:0}.tooltip-sessions{color:var(--text-muted);font-size:.85rem;margin:.25rem 0 0}.stats-extra-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}.stats-extra-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:1rem;display:flex;align-items:center;gap:.75rem}.stats-extra-icon{font-size:1.5rem;flex-shrink:0}.stats-extra-info{display:flex;flex-direction:column}.stats-extra-value{font-size:1.25rem;font-weight:700;color:var(--primary)}.stats-extra-label{font-size:.75rem;color:var(--text-muted);line-height:1.3}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.stat-item{display:flex;flex-direction:column;gap:.5rem;padding:1rem;background:var(--bg-app);border-radius:8px}.stat-label{font-size:.875rem;color:var(--text-muted);font-weight:500}.stat-value{font-size:1.5rem;font-weight:700;color:var(--primary)}[data-theme=dark] .settings-header h1,[data-theme=dark] .settings-section h2{color:var(--text-main)}[data-theme=dark] .settings-card{background:var(--bg-card);border-color:var(--border-color)}[data-theme=dark] .settings-description{color:var(--text-muted)}[data-theme=dark] .user-name-large{color:var(--text-main)}[data-theme=dark] .user-email{color:var(--text-muted)}[data-theme=dark] .stat-item{background:var(--bg-app)}[data-theme=dark] .stats-time-card{background:var(--bg-card);border-color:var(--border-color)}[data-theme=dark] .stats-time-card.highlight{background:linear-gradient(135deg,#1e1b4b,#312e81);border-color:#4338ca}[data-theme=dark] .stats-time-value{color:var(--text-main)}[data-theme=dark] .stats-extra-card,[data-theme=dark] .stats-chart-tooltip{background:var(--bg-card);border-color:var(--border-color)}[data-theme=dark] .account-badge.free{background:#334155;color:#cbd5e1}[data-theme=sepia] .stats-time-card.highlight{background:linear-gradient(135deg,#fef9e7,#f5f0dc);border-color:#d4c9a8}@media(max-width:900px){.stats-cards-grid,.stats-extra-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.settings-container{padding:1rem}.user-info-display{flex-direction:column;text-align:center}.stats-grid{grid-template-columns:1fr}.stats-cards-grid{grid-template-columns:1fr 1fr}.stats-time-card{padding:1rem;flex-direction:column;text-align:center;gap:.5rem}.stats-time-value{font-size:1.1rem}.stats-extra-grid{grid-template-columns:1fr 1fr}.stats-extra-card{flex-direction:column;text-align:center;padding:.75rem}.stats-extra-value{font-size:1.1rem}.stats-chart-container{height:180px}}:root{--primary: #6366f1;--primary-dark: #4f46e5;--secondary: #94a3b8;--accent: #8b5cf6;--success: #10b981;--danger: #ef4444;--warning: #f59e0b;--bg-app: #f8fafc;--bg-main: #f8fafc;--bg-hover: #f1f5f9;--bg-card: #ffffff;--text-main: #0f172a;--text-muted: #64748b;--border-color: #e2e8f0;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius: 12px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,sans-serif;background:var(--bg-app);color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;padding:1rem 1.5rem;box-shadow:var(--shadow-md);position:relative;overflow:visible;display:flex;align-items:center;justify-content:space-between;gap:1rem}.header-main{display:flex;flex-direction:column;gap:.25rem}.app-logo{display:flex;align-items:center;gap:.5rem;text-decoration:none;color:#fff}.app-logo .logo-icon{width:28px;height:28px}.app-logo .logo-text{font-size:1.5rem;font-weight:700;letter-spacing:-.025em}.auth-controls{display:flex;align-items:center;gap:.75rem;z-index:100}.btn-icon-only{width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.25);background:#ffffff1a;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;text-decoration:none}.btn-icon-only:hover{background:#fff3;border-color:#fff6;transform:scale(1.05)}.header-icon{width:20px;height:20px}.chevron-icon{width:14px;height:14px;transition:transform .2s}.language-dropdown{position:relative}.language-selector-btn{padding:.5rem .75rem;border-radius:10px;border:1px solid rgba(255,255,255,.25);background:#ffffff1a;color:#fff;cursor:pointer;display:flex;align-items:center;gap:.5rem;font-size:.875rem;font-weight:500;transition:all .2s;white-space:nowrap}.language-selector-btn:hover{background:#fff3;border-color:#fff6}.lang-flag{font-size:1rem}.lang-name{font-weight:500}.language-menu{position:absolute;top:100%;right:0;margin-top:.5rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;box-shadow:0 4px 12px #00000026;z-index:9999;min-width:180px;overflow:hidden}.language-menu-header{padding:.5rem 1rem;border-bottom:1px solid var(--border-color);font-size:.85rem;color:var(--text-muted);font-weight:500}.language-menu-item{width:100%;padding:.75rem 1rem;border:none;background:transparent;color:var(--text-main);cursor:pointer;text-align:left;font-size:.9rem;display:flex;align-items:center;gap:.5rem;transition:background .2s}.language-menu-item:hover{background:#6366f11a}.language-menu-item.active{background:var(--primary);color:#fff;font-weight:600}.user-profile{display:flex;align-items:center;gap:.5rem;background:#ffffff1a;padding:.35rem .75rem .35rem .35rem;border-radius:99px;border:1px solid rgba(255,255,255,.2)}.user-avatar{width:30px;height:30px;border-radius:50%;border:2px solid rgba(255,255,255,.4)}.user-name{font-size:.85rem;font-weight:500;max-width:120px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}@media(min-width:768px)and (max-width:1024px){.app-header{padding:1rem 1.5rem}.app-logo .logo-text{font-size:1.35rem}.app-subtitle{font-size:.85rem}.auth-controls{gap:.5rem}.btn-icon-only{width:36px;height:36px}.header-icon{width:18px;height:18px}.language-selector-btn{padding:.4rem .6rem;font-size:.8rem}.user-name{max-width:100px;font-size:.8rem}.user-avatar{width:28px;height:28px}}@media(max-width:767px){.app-header{flex-direction:column;padding:1rem;gap:.75rem}.header-main{align-items:center;text-align:center}.app-subtitle{font-size:.8rem}.auth-controls{width:100%;justify-content:center;flex-wrap:wrap;gap:.5rem}.language-selector-btn .lang-name,.user-name{display:none}.user-profile{padding:.25rem}}.app-header:after{content:"";position:absolute;inset:0;background:url('data:image/svg+xml,<svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><g fill="%23ffffff" fill-opacity="0.05"><path d="M0 0h20L0 20z"/></g></svg>');opacity:.3}.app-subtitle{opacity:.85;font-size:.9rem;font-weight:400;margin:0}.icon-xs{width:14px;height:14px;flex-shrink:0}.icon-sm{width:18px;height:18px;flex-shrink:0}.icon-btn{width:20px;height:20px}.icon-action{width:18px;height:18px}.icon-play{width:14px;height:14px}.icon-close{width:18px;height:18px}.app-main{flex:1;padding:2rem 1rem;max-width:1200px;margin:0 auto;width:100%}.app-footer{background:var(--bg-card);border-top:1px solid var(--border-color);padding:1.5rem;text-align:center;color:var(--text-muted);font-size:.875rem}.container{width:100%}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;flex-wrap:wrap;gap:1rem}h1,h2,h3,h4{color:var(--text-main);font-weight:600;letter-spacing:-.025em}button,.btn-primary,.btn-secondary,.btn-danger,.btn-link{font-family:inherit;font-weight:500;border-radius:8px;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-size:.95rem;border:none}.btn-primary{background:var(--primary);color:#fff;padding:.75rem 1.5rem;box-shadow:0 2px 4px #4f46e533}.btn-primary:hover:not(:disabled){background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 6px #4f46e54d}.btn-secondary{background:var(--bg-card);color:var(--text-main);border:1px solid var(--border-color);padding:.75rem 1.25rem}.btn-secondary:hover:not(:disabled){background:var(--bg-app);border-color:var(--text-muted)}.btn-danger{background:#fee2e2;color:var(--danger);padding:.75rem 1.25rem}.btn-danger:hover:not(:disabled){background:#fecaca}.btn-link{background:transparent;color:var(--primary);padding:.5rem}.btn-link:hover{text-decoration:underline}button:disabled{opacity:.6;cursor:not-allowed;transform:none!important}.back-link{color:var(--text-muted);text-decoration:none;font-weight:500;margin-bottom:1rem;display:inline-flex;align-items:center;gap:.5rem;transition:color .2s}.back-link:hover{color:var(--primary)}.form-card,.book-card,.section{background:var(--bg-card);padding:1.5rem;border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid var(--border-color)}.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:2rem}.tabs-container{display:flex;gap:.5rem;margin-bottom:2rem;border-bottom:2px solid var(--border-color)}.tab-button{padding:.75rem 1.5rem;background:none;border:none;border-bottom:3px solid transparent;color:var(--text-muted);font-weight:400;cursor:pointer;font-size:1rem;transition:all .2s}.tab-button:hover{color:var(--primary)}.tab-button.active{border-bottom-color:var(--primary);color:var(--primary);font-weight:600}.books-content{min-height:300px}.levels-container{display:flex;flex-direction:column;gap:2.5rem}.level-section{position:relative}.level-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.level-title{display:flex;align-items:center;gap:.75rem;font-size:1.1rem;font-weight:600;color:var(--text-main)}.level-badge{padding:.25rem .6rem;border-radius:4px;color:#fff;font-size:.8rem;font-weight:700}.level-count{color:var(--text-muted);font-weight:400;font-size:.9rem}.carousel-container{position:relative;padding:0 .5rem}.carousel-track{display:flex;gap:1rem;overflow-x:auto;scroll-behavior:smooth;padding:.5rem 0 1rem;scrollbar-width:thin;scrollbar-color:var(--border-color) transparent}.carousel-track::-webkit-scrollbar{height:6px}.carousel-track::-webkit-scrollbar-track{background:transparent}.carousel-track::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}.carousel-card{flex:0 0 220px;min-width:220px;text-decoration:none}.carousel-card .book-icon{padding:1.5rem 1rem;font-size:2.5rem}.carousel-card-title{font-size:1rem;margin-bottom:.25rem;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--text-main)}.carousel-card-author{color:var(--text-muted);font-size:.85rem;margin-bottom:auto}.carousel-card-creator{display:flex;align-items:center;gap:.5rem;margin-top:.5rem;padding-top:.5rem;border-top:1px solid var(--border-color);font-size:.8rem;color:var(--text-muted)}.creator-avatar{width:20px;height:20px;border-radius:50%}.carousel-card-footer{display:flex;align-items:center;gap:.5rem;margin-top:1rem}.language-badge{font-size:.75rem;padding:.3rem .6rem;background:var(--bg-hover);border-radius:4px;color:var(--text-muted);font-weight:500}.btn-delete-small{margin-left:auto;padding:.3rem .6rem;font-size:.75rem;background:transparent;color:var(--text-muted);border:1px solid var(--border-color);border-radius:4px;cursor:pointer;transition:all .2s}.btn-delete-small:hover{background:#fee2e2;color:#dc2626;border-color:#dc2626}.carousel-nav{position:absolute;top:50%;transform:translateY(-50%);background:var(--bg-card);border:1px solid var(--border-color);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transition:all .2s;z-index:10;box-shadow:var(--shadow-md)}.carousel-nav:hover{background:var(--bg-hover);border-color:var(--primary)}.carousel-container:hover .carousel-nav{opacity:1}.carousel-nav.prev{left:-15px}.carousel-nav.next{right:-15px}.carousel-nav-icon{width:20px;height:20px;color:var(--text-main)}.book-card{display:flex;flex-direction:column;height:100%;transition:all .3s ease;position:relative;overflow:hidden;padding:1.25rem}.book-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary)}.book-icon{font-size:3.5rem;text-align:center;margin-bottom:1rem;background:linear-gradient(135deg,#f0f9ff,#e0e7ff);padding:2rem 1rem;border-radius:8px;color:var(--text-main)}.book-card h3{font-size:1.25rem;margin-bottom:.5rem;line-height:1.3}.book-header-content{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:flex-start;gap:1rem}.book-header-info h1{margin-bottom:.25rem}.book-meta-badges{display:flex;gap:.75rem;margin-top:1.25rem;flex-wrap:wrap}.book-badge{display:inline-flex;align-items:center;gap:.35rem;padding:.5rem 1rem;border-radius:50px;font-size:.85rem;font-weight:600;border:1px solid var(--border-color);background:var(--bg-main)}.badge-language{background:#f1f5f9;color:#475569}.badge-difficulty{color:#fff;border:none}.badge-chapters{background:#fef3c7;color:#92400e;border-color:#fcd34d}.btn-edit-book{flex-shrink:0;padding:.75rem 1.25rem;border:1px solid var(--border-color);border-radius:8px;background:#fff;cursor:pointer;font-weight:500;transition:all .2s}.btn-edit-book:hover{border-color:var(--primary);background:#f8fafc}.chapters-list{display:flex;flex-direction:column;gap:.75rem}.chapter-card{background:var(--bg-card);padding:1.25rem;border-radius:12px;border:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;gap:1rem;transition:all .2s ease}.chapter-card:hover{border-color:var(--primary);box-shadow:0 2px 8px #0000000f}.chapter-card.chapter-completed{background:linear-gradient(135deg,#f0fdf4,#dcfce7);border-color:#86efac}.chapter-card-main{display:flex;align-items:center;gap:1rem;flex:1;min-width:0}.chapter-number{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--secondary);color:#fff;border-radius:10px;font-size:1.1rem;font-weight:700;flex-shrink:0}.chapter-completed .chapter-number{background:#16a34a}.chapter-content{flex:1;min-width:0}.chapter-title-row{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;margin-bottom:.5rem}.chapter-title{margin:0;font-size:1rem;font-weight:600;color:var(--text-main)}.chapter-status-badge{display:inline-flex;align-items:center;gap:.25rem;padding:.25rem .6rem;border-radius:50px;font-size:.7rem;font-weight:600;text-transform:uppercase}.chapter-status-badge.completed{background:#16a34a;color:#fff}.chapter-actions-row{display:flex;align-items:center;gap:.75rem}.chapter-action-btn{display:inline-flex;align-items:center;gap:.35rem;padding:.5rem 1rem;border-radius:6px;font-size:.875rem;font-weight:500;text-decoration:none;transition:all .2s}.chapter-action-btn.primary{background:var(--primary);color:#fff}.chapter-action-btn.primary:hover{background:var(--primary-dark);transform:translate(2px)}.chapter-status{font-size:.85rem;color:var(--text-muted)}.chapter-status.processing{color:#f59e0b;display:flex;align-items:center;gap:.5rem}.processing-spinner{width:14px;height:14px;border:2px solid #fcd34d;border-top-color:#f59e0b;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.chapter-status.no-audio{color:#94a3b8;font-style:italic}.chapter-delete-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border:none;background:#fef2f2;color:#ef4444;border-radius:8px;cursor:pointer;opacity:.6;transition:all .2s}.chapter-delete-btn:hover{opacity:1;background:#fee2e2}.chapter-item{background:var(--bg-card);padding:1rem;border-radius:8px;border:1px solid var(--border-color);margin-bottom:1rem;display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;transition:border-color .2s}.chapter-item:hover{border-color:var(--primary)}[class^=status-]{display:inline-block;padding:.25rem .5rem;border-radius:9999px;font-size:.75rem;font-weight:600;text-transform:uppercase}.status-completed{background:#dcfce7;color:#166534}.status-processing{background:#dbeafe;color:#1e40af}.status-pending{background:#fef3c7;color:#92400e}.status-failed{background:#fee2e2;color:#991b1b}.modal-overlay{position:fixed;inset:0;background:#0f172a99;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:center;z-index:50}.modal-content{background:var(--bg-card);padding:2rem;border-radius:16px;width:90%;max-width:500px;box-shadow:var(--shadow-lg);animation:slideUpFade .3s ease-out}@keyframes slideUpFade{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.form-group{margin-bottom:1.25rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-main);font-size:.9rem}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:8px;font-size:1rem;font-family:inherit;transition:all .2s;background:#f8fafc}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px #6366f11a}.reader-container{display:flex;flex-direction:column;height:100vh;max-width:100%;overflow:hidden;background:var(--bg-main)}.reader-header{flex-shrink:0;text-align:center;padding:1rem 1.5rem;background:var(--bg-card);border-bottom:1px solid var(--border-color)}.reader-header .back-link{display:inline-flex;align-items:center;gap:.5rem;color:var(--text-muted);font-size:.9rem;text-decoration:none;margin-bottom:.5rem}.reader-header .back-link:hover{color:var(--primary)}.reader-header h2{font-family:Merriweather,serif;font-size:1.5rem;color:var(--text-main);max-width:700px;margin:0 auto}.transcription{flex:1;min-height:0;overflow:hidden;background:var(--bg-main)}.virtuoso-segments{height:100%!important;background:transparent!important}.virtuoso-segments>div{max-width:720px;margin:0 auto;padding:1rem 1rem calc(100px + 1rem) 1rem}.segment{padding:.75rem 1rem;margin-bottom:.25rem;border-radius:8px;cursor:pointer;transition:background .15s ease;display:flex;gap:1rem;align-items:flex-start;background:transparent}.segment:hover{background:var(--bg-hover)}.segment.active{background:var(--segment-active-bg, rgba(99, 102, 241, .08));border-left:3px solid var(--primary);margin-left:-3px}.segment .text{font-family:Merriweather,Georgia,serif;font-size:1.25rem;line-height:1.9;color:var(--reader-text);flex:1}.segment.active .text{color:var(--text-main)}.segment-header{display:flex;align-items:center;gap:.5rem;flex-shrink:0;padding-top:.25rem}.timestamp{font-size:.75rem;font-family:SF Mono,Monaco,Consolas,monospace;color:var(--text-muted);min-width:36px}.btn-play-segment{background:var(--primary);border:none;border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .15s ease,background .15s ease;flex-shrink:0}.btn-play-segment:hover{transform:scale(1.1);background:var(--primary-hover)}.btn-play-segment .icon-play{width:14px;height:14px;color:#fff}.audio-player{position:fixed;bottom:0;left:0;right:0;background:var(--bg-card);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--border-color);padding:.75rem 1rem;z-index:100;box-shadow:0 -2px 20px #00000014}.player-controls-wrapper{max-width:720px;margin:0 auto;display:flex;gap:.75rem;align-items:center}.audio-controls{flex:1;height:40px;border-radius:8px}.speed-toggle{background:var(--bg-main);border:1px solid var(--border-color);font-weight:600;font-size:.85rem;color:var(--primary);border-radius:8px;width:40px;height:40px;cursor:pointer;transition:all .15s ease}.speed-toggle:hover{background:var(--bg-hover)}.loop-toggle{background:var(--bg-main);border:1px solid var(--border-color);border-radius:8px;width:40px;height:40px;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;justify-content:center}.loop-toggle:hover{background:var(--bg-hover)}.btn-focus-mode{background:var(--bg-main);border:1px solid var(--border-color);border-radius:8px;width:40px;height:40px;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.btn-focus-mode:hover{background:var(--bg-hover);color:var(--primary)}.btn-focus-mode.active{background:var(--primary);color:#fff;border-color:var(--primary)}.reader-focus-mode{position:fixed;inset:0;z-index:1000;background:var(--bg-main)}.reader-focus-mode .reader-header{padding:.75rem 1rem}.reader-focus-mode .reader-header h2{font-size:1.25rem}@media(max-width:767px){.reader-focus-mode .reader-header,.reader-focus-mode .chapter-navigation{display:none}.reader-focus-mode{padding-bottom:60px}.reader-focus-mode .transcription{padding-top:.5rem}}@media(max-width:768px){.reader-header{padding:.75rem 1rem}.reader-header h2{font-size:1.2rem}.segment{padding:.5rem .75rem;gap:.75rem}.segment .text{font-size:1.1rem;line-height:1.8}.btn-play-segment{width:28px;height:28px}.btn-play-segment .icon-play{width:12px;height:12px}.timestamp{font-size:.7rem;min-width:32px}.virtuoso-segments>div{padding:.75rem .5rem calc(90px + .75rem) .5rem}.audio-player{padding:.5rem .75rem}.player-controls-wrapper{gap:.5rem}.audio-controls{height:36px}.speed-toggle,.loop-toggle,.btn-focus-mode{width:36px;height:36px;font-size:.8rem}}@media(min-width:769px)and (max-width:1024px){.segment .text{font-size:1.2rem}.virtuoso-segments>div{max-width:680px}}.loop-toggle:hover{border-color:var(--primary);transform:scale(1.05)}.loop-toggle.active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 4px 12px #6366f14d}.chapter-navigation{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:stretch;gap:1rem}.nav-group{flex:1;display:flex}.nav-group:first-child{justify-content:flex-start}.nav-group:last-child{justify-content:flex-end}.nav-btn{display:flex;flex-direction:column;gap:.5rem;min-width:200px;max-width:300px;padding:1rem 1.25rem;border:1px solid var(--border-color);border-radius:12px;transition:all .2s ease;background:#fff;text-decoration:none}.nav-btn:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.nav-btn span:first-child{font-size:.85rem;color:var(--primary);font-weight:600}.nav-btn.prev span:first-child{text-align:left}.nav-btn.next span:first-child{text-align:right}.nav-title{font-family:Merriweather,serif;font-weight:600;font-size:.95rem;color:var(--text-main);line-height:1.4}.nav-btn.prev .nav-title{text-align:left}.nav-btn.next .nav-title{text-align:right}.nav-hint{color:var(--text-light);font-size:.85rem;font-style:italic;text-align:center}.segment-content{flex:1;position:relative;display:flex;align-items:baseline;gap:.5rem}.btn-edit-segment{opacity:0;background:transparent;border:none;font-size:1.1rem;color:var(--primary);cursor:pointer;padding:.2rem;transition:all .2s}.segment:hover .btn-edit-segment{opacity:.5}.btn-edit-segment:hover{opacity:1!important;transform:scale(1.1)}.edit-form{flex:1;display:flex;flex-direction:column;gap:.5rem}.edit-form textarea{width:100%;padding:.75rem;border:1px solid var(--primary);border-radius:8px;font-family:Merriweather,serif;font-size:1.35rem;line-height:1.6;resize:vertical;background:#fff;color:var(--text-main)}.edit-actions{display:flex;gap:.5rem;justify-content:flex-end}.btn-save,.btn-cancel{padding:.4rem .8rem;border-radius:6px;font-size:.85rem;cursor:pointer;border:none;font-weight:500;transition:all .2s}.btn-save{background:var(--success);color:#fff}.btn-save:hover{background:#059669}.btn-cancel{background:var(--secondary);color:#fff}.btn-cancel:hover{background:var(--text-muted)}.btn-save,.btn-cancel{display:inline-flex;align-items:center;gap:.35rem}.limit-warning,.limit-reached{display:flex;align-items:center;gap:1rem;padding:1rem 1.5rem;border-radius:12px;margin:1rem 0;font-size:.95rem;font-weight:500}.limit-warning{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#78350f;box-shadow:0 4px 12px #fbbf244d}.limit-reached{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;box-shadow:0 4px 12px #ef444466}.limit-icon{width:28px;height:28px;flex-shrink:0}.limit-content{flex:1}.limit-content p{margin:.25rem 0 0;font-size:.85rem;opacity:.9}.limit-btn{background:#78350f;color:#fff;padding:.5rem 1rem;border-radius:8px;text-decoration:none;font-weight:600;font-size:.9rem;white-space:nowrap}.limit-btn-alt{background:#fff;color:#dc2626;padding:.5rem 1rem;border-radius:8px;text-decoration:none;font-weight:600;font-size:.9rem;white-space:nowrap}.translation-content{display:flex;justify-content:space-between;align-items:flex-start;gap:.5rem}.translation-content span{flex:1}.btn-edit-translation{flex-shrink:0;opacity:1!important}.nav-label{display:inline-flex;align-items:center;gap:.35rem;font-size:.85rem;color:var(--primary);font-weight:600}.nav-icon{width:16px;height:16px}.segment-content-wrapper{flex:1;display:flex;flex-direction:column}.segment-actions{display:flex;gap:.25rem;margin-left:.5rem}.translation-box{margin-top:.5rem;font-family:Inter,sans-serif;font-size:1rem;color:var(--primary);background:var(--bg-app);padding:.5rem 1rem;border-radius:6px;border-left:3px solid var(--accent);margin-left:1rem;font-style:italic;animation:slideDown .2s ease-out}.translation-edit-box{margin-top:.5rem;padding:.75rem;background:var(--bg-app);border-radius:6px;border-left:3px solid var(--accent);margin-left:1rem;animation:slideDown .2s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}@media(min-width:768px)and (max-width:1024px){.app-main{padding:1.5rem}.carousel-card{flex:0 0 200px;min-width:200px}.carousel-nav{width:36px;height:36px}.books-grid{grid-template-columns:repeat(2,1fr);gap:1.5rem}.book-card{padding:1rem}.book-icon{font-size:2.5rem;padding:1.5rem 1rem}.chapter-card{padding:1rem}.chapter-number{width:44px;height:44px}.chapter-action-btn{padding:.4rem .75rem;font-size:.8rem}.reader-container{max-width:100%;padding:0 1rem}.segment{padding:1rem}.segment .text{font-size:1.25rem}.btn-play-segment{width:40px;height:40px}.btn-play-segment .icon-play{width:16px;height:16px}.nav-btn{min-width:180px;padding:.875rem 1rem}.nav-title{font-size:.9rem}.player-controls-wrapper{gap:.75rem}.speed-toggle,.loop-toggle{width:40px;height:40px}}@media(max-width:767px){.app-main{padding:1rem}.header{flex-direction:column;align-items:stretch;text-align:center}.header h1{margin-bottom:.5rem}.books-grid{grid-template-columns:1fr;gap:1rem}.carousel-nav{display:none}.carousel-card{flex:0 0 160px;min-width:160px}.carousel-card .book-icon{padding:1rem .75rem;font-size:2rem}.carousel-card-title{font-size:.9rem}.carousel-card-author{font-size:.8rem}.level-title{font-size:1rem}.levels-container{gap:2rem}.tabs-container{gap:0}.tab-button{flex:1;padding:.6rem .75rem;font-size:.9rem;text-align:center}.book-header-content{flex-direction:column;gap:1.5rem}.btn-edit-book{align-self:flex-start}.book-meta-badges{gap:.5rem}.book-badge{padding:.4rem .75rem;font-size:.8rem}.chapter-card{flex-direction:column;align-items:stretch;gap:1rem;padding:1rem}.chapter-card-main{flex-direction:row}.chapter-number{width:42px;height:42px;font-size:1rem}.chapter-title-row{flex-direction:column;align-items:flex-start;gap:.5rem}.chapter-delete-btn{align-self:flex-end;opacity:1}.chapter-item{flex-direction:column;align-items:flex-start;gap:1rem}.chapter-actions{width:100%;display:flex;justify-content:flex-end;border-top:1px dashed var(--border-color);padding-top:.75rem}.reader-container{padding-bottom:70px}.segment{flex-direction:column;padding:1.25rem .75rem;border-bottom:1px solid #f1f5f9}.segment-content-wrapper{width:100%}.segment-header{width:100%;gap:.75rem;margin-bottom:.75rem}.btn-play-segment{width:48px;height:48px;border-radius:12px;background:var(--primary);box-shadow:0 2px 8px #6366f14d}.btn-play-segment .icon-play{width:20px;height:20px}.btn-play-segment:active{transform:scale(.95);box-shadow:0 1px 4px #6366f133}.timestamp{font-size:.8rem;padding:.35rem .75rem;background:var(--bg-app);border-radius:6px;color:var(--text-muted)}.segment .text{font-size:1.15rem;line-height:1.7;margin-bottom:.5rem}.segment-actions{margin-left:0;margin-top:.75rem;justify-content:flex-end;background:#f8fafc;padding:.5rem;border-radius:8px;opacity:1}.btn-edit-segment{opacity:1!important;padding:.5rem .75rem;background:#fff;border:1px solid var(--border-color);border-radius:8px;box-shadow:var(--shadow-sm);margin-left:.25rem}.btn-edit-segment .icon-action{width:18px;height:18px}.limit-warning,.limit-reached{flex-direction:column;text-align:center;padding:1rem;gap:.75rem}.limit-icon{width:24px;height:24px}.limit-btn,.limit-btn-alt{width:100%;text-align:center}.audio-player{padding:.5rem .75rem;padding-bottom:calc(.5rem + env(safe-area-inset-bottom,0px))}.player-controls-wrapper{flex-direction:row;flex-wrap:nowrap;gap:.5rem;align-items:center}.audio-controls{flex:1;min-width:0;height:36px}.speed-toggle,.loop-toggle,.btn-focus-mode{flex-shrink:0;width:36px;height:36px;padding:0;font-size:.75rem}.chapter-navigation{flex-direction:column;gap:.5rem;margin-top:1rem;margin-bottom:0;padding-top:1rem;padding-bottom:.5rem}.nav-group{justify-content:center!important}.nav-btn{max-width:100%;min-width:unset;width:100%;padding:.75rem 1rem}.nav-btn .nav-label{font-size:.85rem}.nav-btn .nav-title{font-size:.95rem;text-align:center!important}}.landing-container{min-height:100vh;display:flex;flex-direction:column;background:#fff}.landing-nav{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;max-width:1200px;margin:0 auto;width:100%}.landing-logo{display:flex;align-items:center;gap:.5rem;font-size:1.5rem;font-weight:800;color:var(--primary);letter-spacing:-.05em}.landing-logo .logo-icon{width:28px;height:28px;color:var(--primary)}.landing-hero{flex:1;display:flex;align-items:center;justify-content:space-between;padding:4rem 2rem;max-width:1200px;margin:0 auto;gap:4rem;width:100%}.hero-content{flex:1;max-width:600px}.hero-title{font-size:3.5rem;font-weight:800;line-height:1.1;margin-bottom:1.5rem;background:linear-gradient(135deg,var(--primary-dark) 0%,var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{font-size:1.25rem;color:var(--text-muted);margin-bottom:2.5rem;line-height:1.6}.btn-lg{padding:1rem 2rem;font-size:1.1rem;border-radius:99px;background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);box-shadow:var(--shadow-lg);transition:transform .2s}.btn-lg:hover{transform:translateY(-2px);box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a}.hero-visual{flex:1;height:400px;position:relative;display:flex;justify-content:center;align-items:center}.visual-card{position:absolute;width:80px;height:80px;background:#fff;border-radius:20px;box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center;animation:float 6s ease-in-out infinite;border:1px solid var(--border-color)}.visual-icon{width:36px;height:36px;color:var(--primary)}.card-1{top:20%;left:20%;animation-delay:0s;z-index:1;background:#e0e7ff}.card-1 .visual-icon{color:#4f46e5}.card-2{top:40%;right:20%;animation-delay:2s;z-index:2;background:#f3e8ff;width:100px;height:100px}.card-2 .visual-icon{width:44px;height:44px;color:#7c3aed}.card-3{bottom:20%;left:30%;animation-delay:4s;z-index:3;background:#dcfce7}.card-3 .visual-icon{color:#10b981}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}.landing-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;padding:4rem 2rem;max-width:1200px;margin:0 auto;width:100%;background:var(--bg-app);border-radius:24px;margin-bottom:4rem}.feature-card{padding:2rem;background:#fff;border-radius:16px;box-shadow:var(--shadow-sm);transition:transform .2s}.feature-card:hover{transform:translateY(-5px)}.feature-icon-wrapper{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);display:flex;align-items:center;justify-content:center;margin-bottom:1rem}.feature-icon{width:28px;height:28px;color:#fff}.feature-card h3{font-size:1.25rem;margin-bottom:.75rem;color:var(--text-main)}.feature-card p{color:var(--text-muted)}.landing-footer{text-align:center;padding:2rem;background:var(--bg-card);border-top:1px solid var(--border-color);color:var(--text-muted)}.clickable-word{cursor:pointer;transition:all .15s ease;border-radius:2px;padding:0 2px}.clickable-word:hover{background:#6366f11a;color:var(--primary)}.unknown-word{background:#fef3c7;color:#92400e;font-weight:500;border-bottom:2px solid #fbbf24}.unknown-word:hover{background:#fde68a;color:#78350f}.segment-header{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem}.btn-play-segment{width:32px;height:32px;border-radius:50%;border:none;background:var(--primary);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.75rem;transition:all .2s;flex-shrink:0}.btn-play-segment:hover{background:var(--primary-dark);transform:scale(1.1)}.btn-play-segment:active{transform:scale(.95)}.word-popup-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:10000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fadeIn .2s ease}.word-popup-enhanced{background:var(--bg-card);border-radius:16px;box-shadow:0 20px 25px -5px #0000001a,0 8px 10px -6px #0000001a;max-width:500px;width:90%;max-height:80vh;overflow:hidden;display:flex;flex-direction:column;animation:slideUp .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.word-popup-header{display:flex;align-items:center;justify-content:space-between;padding:1.5rem;border-bottom:1px solid var(--border-color);background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff}.word-popup-title{margin:0;font-size:1.5rem;font-weight:700;text-transform:capitalize}.word-popup-close{width:32px;height:32px;border-radius:50%;border:none;background:#fff3;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.25rem;transition:all .2s}.word-popup-close:hover{background:#ffffff4d;transform:scale(1.1)}.word-popup-body{padding:1.5rem;overflow-y:auto;flex:1}.word-popup-loading{display:flex;flex-direction:column;align-items:center;gap:1rem;padding:2rem;color:var(--text-muted)}.spinner-icon{width:32px;height:32px;border:3px solid var(--border-color);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite}.word-popup-definition{font-size:1rem;line-height:1.6}.definition-note{display:flex;align-items:start;gap:.5rem;padding:.75rem;background:#eff6ff;border-left:3px solid #3b82f6;border-radius:4px;margin-bottom:1rem;font-size:.9rem;color:#1e40af}.note-icon{width:20px;height:20px;flex-shrink:0;color:#3b82f6}.definition-content{color:var(--text-main);font-size:1.05rem;line-height:1.7}.definition-error{color:var(--danger);font-style:italic}.definition-placeholder{color:var(--text-muted);text-align:center;padding:1rem}.word-popup-actions{display:flex;flex-direction:column;gap:.75rem;padding:1.5rem;border-top:1px solid var(--border-color);background:var(--bg-app)}.btn-word-action{display:flex;align-items:center;gap:.75rem;padding:.875rem 1.25rem;border:none;border-radius:8px;cursor:pointer;font-size:1rem;font-weight:500;transition:all .2s;width:100%}.btn-word-action:disabled{opacity:.5;cursor:not-allowed}.btn-word-action .btn-icon{width:22px;height:22px;flex-shrink:0}.btn-word-action .btn-text{flex:1;text-align:left}.btn-unknown{background:#fef3c7;color:#92400e;border:2px solid #fbbf24}.btn-unknown:hover:not(:disabled){background:#fde68a;border-color:#f59e0b}.btn-known{background:#d1fae5;color:#065f46;border:2px solid #10b981}.btn-known:hover:not(:disabled){background:#a7f3d0;border-color:#059669}.btn-learned{background:#dbeafe;color:#1e40af;border:2px solid #3b82f6}.btn-learned:hover:not(:disabled){background:#bfdbfe;border-color:#2563eb}.definition-structured{display:flex;flex-direction:column;gap:1rem}.definition-phonetics{font-family:Segoe UI,system-ui,sans-serif;font-size:1.1rem;color:#6366f1;padding:.75rem 1rem;background:linear-gradient(135deg,#eef2ff,#e0e7ff);border-radius:8px;text-align:center;font-weight:500;letter-spacing:.5px}.definition-entry{padding:1rem;background:#f8fafc;border-radius:10px;border-left:4px solid #8b5cf6;box-shadow:0 1px 3px #0000000d}.definition-entry+.definition-entry{margin-top:.5rem}.pos-badge{display:inline-block;padding:.3rem .75rem;background:linear-gradient(135deg,#8b5cf6,#6366f1);color:#fff;font-size:.7rem;font-weight:700;text-transform:uppercase;border-radius:20px;margin-bottom:.75rem;letter-spacing:.5px}.definition-spanish{font-size:1.1rem;color:#166534;margin-bottom:.75rem;padding:.6rem .75rem;background:linear-gradient(135deg,#dcfce7,#bbf7d0);border-radius:6px;font-weight:500}.definition-spanish strong{color:#15803d;font-weight:600}.definition-english{font-size:.95rem;color:#475569;margin-top:.5rem;line-height:1.6;padding:.5rem 0}.definition-english strong{color:#6366f1;display:block;margin-bottom:.5rem;font-weight:600}.definition-english ol{margin:.5rem 0 0 1.5rem;padding:0}.definition-english li{margin-bottom:.5rem;line-height:1.6;color:#334155}.definition-english li::marker{color:#8b5cf6;font-weight:600}@media(min-width:768px)and (max-width:1024px){.landing-nav{padding:1rem 1.5rem}.landing-hero{padding:3rem 1.5rem;gap:2rem}.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1.1rem}.hero-visual{height:320px}.visual-card{width:70px;height:70px}.visual-icon{width:32px;height:32px}.card-2{width:90px;height:90px}.card-2 .visual-icon{width:40px;height:40px}.landing-features{padding:2.5rem 1.5rem;gap:1.5rem;grid-template-columns:repeat(3,1fr)}.feature-card{padding:1.5rem}.feature-icon-wrapper{width:50px;height:50px}.feature-icon{width:26px;height:26px}.feature-card h3{font-size:1.1rem}.feature-card p{font-size:.9rem}}@media(max-width:767px){.landing-nav{padding:1rem}.landing-logo{font-size:1.25rem}.landing-logo .logo-icon{width:24px;height:24px}.landing-hero{flex-direction:column;text-align:center;padding:2rem 1rem;gap:2rem}.hero-title{font-size:2rem;line-height:1.2}.hero-subtitle{font-size:1rem}.hero-visual{display:none}.hero-content{max-width:100%}.btn-lg{width:100%;justify-content:center}.landing-features{padding:1.5rem 1rem;grid-template-columns:1fr;margin-bottom:2rem;gap:1rem;border-radius:16px}.feature-card{padding:1.5rem}.feature-icon-wrapper{width:48px;height:48px;border-radius:12px}.feature-icon{width:24px;height:24px}}:root,[data-theme=light]{--reader-bg: #ffffff;--reader-text: #0f172a;--segment-bg: #f1f5f9;--segment-active-bg: #dbeafe;--segment-border: #cbd5e1;--segment-hover-bg: #e0e7ff}[data-theme=sepia]{--bg-app: #f4f1ea;--bg-main: #faf8f3;--bg-hover: #f0ebe2;--bg-card: #f9f6ee;--text-main: #2c1810;--text-muted: #6b5544;--border-color: #d4cdc0;--primary: #b8860b;--primary-dark: #9a7209;--reader-text: #2c1810;--segment-active-bg: rgba(184, 134, 11, .15)}[data-theme=dark]{--bg-app: #0f172a;--bg-main: #1e293b;--bg-hover: #334155;--bg-card: #1e293b;--text-main: #f8fafc;--text-muted: #94a3b8;--border-color: #334155;--primary: #818cf8;--primary-dark: #6366f1;--primary-hover: #6366f1;--reader-text: #e2e8f0;--segment-active-bg: rgba(129, 140, 248, .15);--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .3);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .3)}[data-theme=dark] .book-card{background:var(--bg-card);border-color:var(--border-color)}[data-theme=dark] .book-card:hover{transform:translateY(-4px);box-shadow:0 8px 16px #0006}[data-theme=dark] .chapter-item,[data-theme=dark] .chapter-card{background:var(--bg-card);border-color:var(--border-color)}[data-theme=dark] .chapter-card.chapter-completed{background:linear-gradient(135deg,#052e16,#14532d);border-color:#166534}[data-theme=dark] .book-badge{background:var(--bg-card);border-color:var(--border-color);color:var(--text-main)}[data-theme=dark] .badge-language{background:#334155;color:#e2e8f0}[data-theme=dark] .badge-chapters{background:#422006;color:#fcd34d;border-color:#854d0e}[data-theme=dark] .btn-edit-book{background:var(--bg-card);color:var(--text-main);border-color:var(--border-color)}[data-theme=dark] .chapter-delete-btn{background:#450a0a;color:#fca5a5}[data-theme=dark] input,[data-theme=dark] textarea,[data-theme=dark] select{background:var(--bg-card);color:var(--text-main);border-color:var(--border-color)}[data-theme=dark] button:not(.btn-primary):not(.btn-danger):not(.btn-success){background:var(--bg-card);color:var(--text-main);border-color:var(--border-color)}[data-theme=dark] .btn-secondary{background:var(--bg-card);color:var(--text-main);border-color:var(--border-color)}[data-theme=dark] .btn-secondary:hover:not(:disabled){background:var(--bg-app);border-color:var(--primary)}[data-theme=dark] .btn-danger{background:#ef444433;color:#fca5a5;border:1px solid rgba(239,68,68,.3)}[data-theme=dark] .btn-danger:hover:not(:disabled){background:#ef44444d;border-color:var(--danger)}[data-theme=dark] .back-link{color:var(--primary)}[data-theme=dark] .word-tooltip{background:var(--bg-card);border-color:var(--border-color);box-shadow:0 8px 24px #00000080}[data-theme=dark] h1,[data-theme=dark] h2,[data-theme=dark] h3,[data-theme=dark] h4,[data-theme=dark] h5,[data-theme=dark] h6,[data-theme=dark] p,[data-theme=dark] .container{color:var(--text-main)}[data-theme=sepia] .book-card,[data-theme=sepia] .chapter-item,[data-theme=sepia] .chapter-card{background:var(--bg-card);border-color:var(--border-color)}[data-theme=sepia] .chapter-card.chapter-completed{background:linear-gradient(135deg,#fef9e7,#f5f0dc);border-color:#d4c9a8}[data-theme=sepia] .book-badge,[data-theme=sepia] .btn-edit-book{background:var(--bg-card);border-color:var(--border-color)}[data-theme=dark] .completion-modal-content{background:var(--bg-card);box-shadow:0 20px 60px #000c}[data-theme=dark] .completion-modal-header h2,[data-theme=dark] .completion-chapter-title{color:var(--text-main)}[data-theme=dark] .completion-motivation{background:linear-gradient(135deg,#818cf826,#a78bfa26);border-left-color:var(--primary);color:var(--text-main)}[data-theme=dark] .completion-stat-card{background:var(--bg-app)}[data-theme=dark] .stat-label{color:var(--text-muted)}[data-theme=dark] .stat-value{color:var(--primary)}[data-theme=dark] .audio-player{background:var(--bg-card);border-color:var(--border-color)}[data-theme=dark] .player-controls button{background:var(--bg-app);color:var(--text-main);border-color:var(--border-color)}[data-theme=dark] .player-controls button:hover{background:var(--bg-card);border-color:var(--primary)}[data-theme=dark] .speed-control,[data-theme=dark] .loop-toggle{background:var(--bg-app);color:var(--text-main);border-color:var(--border-color)}[data-theme=dark] .speed-control:hover,[data-theme=dark] .loop-toggle:hover{background:var(--bg-card);border-color:var(--primary)}[data-theme=dark] .loop-toggle.active{background:var(--primary);color:#fff;border-color:var(--primary)}[data-theme=dark] .translation-tooltip{background:var(--bg-card);border-color:var(--border-color);color:var(--text-main)}[data-theme=dark] .translation-box{background:var(--bg-app);color:var(--primary);border-left-color:var(--primary)}[data-theme=dark] .translation-edit-box{background:var(--bg-app);border-left-color:var(--primary)}[data-theme=dark] .translation-edit-box input,[data-theme=dark] .translation-edit-box textarea{background:var(--bg-card);color:var(--text-main);border-color:var(--border-color)}[data-theme=dark] .daily-limit-warning,[data-theme=dark] .daily-limit-reached{background:var(--bg-card);border-color:var(--warning);color:var(--text-main)}.upload-cta{display:flex;align-items:center;gap:1.5rem;margin-bottom:1.5rem;flex-wrap:wrap}.upload-cta .cli-link{color:var(--primary);font-size:.9rem;text-decoration:none;transition:color .2s}.upload-cta .cli-link:hover{text-decoration:underline;color:var(--primary-dark)}.upload-form-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem}.upload-form-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.upload-form-header h3{margin:0;font-size:1.1rem;font-weight:600;color:var(--text-main)}.btn-close{width:32px;height:32px;border:none;background:var(--bg-app);color:var(--text-muted);border-radius:50%;font-size:1.25rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.btn-close:hover{background:var(--border-color);color:var(--text-main)}.upload-instructions{font-size:.9rem;color:var(--text-muted);margin-bottom:1.25rem;line-height:1.5}.upload-instructions a{color:var(--primary);text-decoration:none}.upload-instructions a:hover{text-decoration:underline}.upload-error{background:#fee2e2;color:#991b1b;padding:.75rem 1rem;border-radius:8px;margin-bottom:1rem;font-size:.9rem;border-left:3px solid var(--danger)}.upload-actions{display:flex;gap:1rem;margin-top:1.5rem;justify-content:flex-end}.file-name{display:block;margin-top:.5rem;font-size:.85rem;color:var(--primary);font-weight:500}[data-theme=dark] .upload-form-card{background:var(--bg-card);border-color:var(--border-color)}[data-theme=dark] .upload-error{background:#ef444426;color:#fca5a5;border-left-color:var(--danger)}[data-theme=dark] .btn-close{background:var(--bg-app);color:var(--text-muted)}[data-theme=dark] .btn-close:hover{background:var(--border-color);color:var(--text-main)}[data-theme=sepia] .upload-form-card{background:var(--bg-card);border-color:var(--border-color)}@media(max-width:640px){.upload-cta{flex-direction:column;align-items:stretch;gap:1rem}.upload-cta .btn-primary{width:100%;justify-content:center}.upload-cta .cli-link{text-align:center}.upload-actions{flex-direction:column}.upload-actions button{width:100%}}@media(min-width:1024px){.download-btn{display:none!important}}.download-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border:1px solid var(--border-color);border-radius:8px;background:var(--bg-card);color:var(--text-main);cursor:pointer;font-size:.9rem;transition:all .2s ease}.download-btn:hover{border-color:var(--primary);background:var(--bg-hover)}.download-btn.compact{padding:.4rem;border-radius:6px}.download-btn .icon-download{width:20px;height:20px;color:var(--primary)}.download-btn.compact .icon-download{width:18px;height:18px}.download-btn .file-size{color:var(--text-muted);font-size:.8rem;margin-left:.25rem}.download-btn.downloading{pointer-events:none;opacity:.9}.download-progress-ring{position:relative;width:32px;height:32px}.circular-progress{width:100%;height:100%;transform:rotate(-90deg)}.circle-bg{fill:none;stroke:var(--border-color);stroke-width:3}.circle-progress{fill:none;stroke:var(--primary);stroke-width:3;stroke-linecap:round;transition:stroke-dasharray .3s ease}.progress-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:.6rem;font-weight:600;color:var(--primary)}.download-label{color:var(--text-muted);font-size:.85rem}.download-btn.available{display:flex;gap:.25rem;padding:0;background:transparent;border:none}.btn-offline-status{display:flex;align-items:center;gap:.35rem;padding:.4rem .6rem;border:1px solid var(--success-color, #22c55e);border-radius:6px;background:#22c55e1a;color:var(--success-color, #22c55e);font-size:.8rem;cursor:default}.btn-offline-status .icon-download{width:16px;height:16px;color:var(--success-color, #22c55e)}.btn-remove-download{display:flex;align-items:center;justify-content:center;padding:.4rem;border:1px solid var(--border-color);border-radius:6px;background:var(--bg-card);color:var(--text-muted);cursor:pointer;transition:all .2s ease}.btn-remove-download:hover{border-color:var(--error-color, #ef4444);background:#ef44441a;color:var(--error-color, #ef4444)}.btn-remove-download .icon-trash{width:16px;height:16px}.download-error{display:block;color:var(--error-color, #ef4444);font-size:.75rem;margin-top:.25rem}[data-theme=dark] .download-btn{background:var(--bg-card);border-color:var(--border-color)}[data-theme=dark] .btn-offline-status{background:#22c55e26}[data-theme=dark] .btn-remove-download{background:var(--bg-app)}.legal-page{min-height:100vh;background:var(--bg-app);padding:2rem 1rem}.legal-container{max-width:800px;margin:0 auto;background:var(--bg-card);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow-md)}.legal-container .back-link{display:inline-flex;align-items:center;gap:.5rem;color:var(--primary);text-decoration:none;font-size:.875rem;margin-bottom:1.5rem;transition:opacity .2s}.legal-container .back-link:hover{opacity:.8}.legal-container .back-icon{width:16px;height:16px}.legal-container h1{font-size:2rem;font-weight:700;color:var(--text-main);margin-bottom:.5rem}.legal-updated{color:var(--text-muted);font-size:.875rem;margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-color)}.legal-container section{margin-bottom:2rem}.legal-container h2{font-size:1.25rem;font-weight:600;color:var(--text-main);margin-bottom:.75rem}.legal-container p{color:var(--text-main);line-height:1.7;margin-bottom:.75rem}.legal-container ul{margin-left:1.5rem;margin-bottom:1rem}.legal-container li{color:var(--text-main);line-height:1.7;margin-bottom:.5rem}.legal-container strong{font-weight:600}@media(max-width:640px){.legal-container{padding:1.5rem}.legal-container h1{font-size:1.5rem}.legal-container h2{font-size:1.125rem}}.users-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;margin-top:1.5rem}.user-card{background:var(--bg-secondary);border-radius:16px;padding:1.5rem;display:flex;flex-direction:column;align-items:center;text-align:center;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;border:1px solid var(--border-light)}.user-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px #0000001f}.user-card-avatar{width:80px;height:80px;border-radius:50%;overflow:hidden;margin-bottom:1rem;background:var(--bg-main);display:flex;align-items:center;justify-content:center}.user-card-avatar img{width:100%;height:100%;object-fit:cover}.user-card-avatar-placeholder{width:80px;height:80px;color:var(--text-muted)}.user-card-info{flex:1;margin-bottom:1rem}.user-card-name{font-size:1.125rem;font-weight:600;color:var(--text-main);margin:0 0 .75rem}.user-card-stats{display:flex;gap:1rem;justify-content:center;color:var(--text-muted);font-size:.875rem}.user-card-stat{display:flex;align-items:center;gap:.25rem}.stat-icon{font-size:.875rem}.user-card-follow-btn{width:100%;padding:.625rem 1.25rem;border-radius:8px;font-weight:600;font-size:.875rem;cursor:pointer;transition:all .2s ease;border:2px solid var(--accent);background:var(--accent);color:#fff}.user-card-follow-btn:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}.user-card-follow-btn.following{background:transparent;color:var(--accent)}.user-card-follow-btn.following:hover:not(:disabled){background:rgba(var(--accent-rgb, 99, 102, 241),.1)}.user-card-follow-btn:disabled{opacity:.6;cursor:not-allowed}.user-profile-header{display:flex;align-items:center;gap:2rem;padding:2rem;background:var(--bg-secondary);border-radius:16px;margin-bottom:2rem;border:1px solid var(--border-light)}.user-profile-avatar{width:120px;height:120px;border-radius:50%;overflow:hidden;flex-shrink:0;background:var(--bg-main);display:flex;align-items:center;justify-content:center}.user-profile-avatar img{width:100%;height:100%;object-fit:cover}.user-profile-avatar-placeholder{width:120px;height:120px;color:var(--text-muted)}.user-profile-info{flex:1}.user-profile-name{font-size:1.75rem;font-weight:700;color:var(--text-main);margin:0 0 1rem}.user-profile-stats{display:flex;gap:2rem;margin-bottom:1.25rem}.profile-stat{display:flex;flex-direction:column;align-items:center}.profile-stat .stat-value{font-size:1.5rem;font-weight:700;color:var(--text-main)}.profile-stat .stat-label{font-size:.875rem;color:var(--text-muted)}.user-profile-follow-btn{padding:.75rem 2rem;border-radius:8px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .2s ease;border:2px solid var(--accent);background:var(--accent);color:#fff}.user-profile-follow-btn:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}.user-profile-follow-btn.following{background:transparent;color:var(--accent)}.user-profile-follow-btn.following:hover:not(:disabled){background:rgba(var(--accent-rgb, 99, 102, 241),.1)}.user-profile-follow-btn:disabled{opacity:.6;cursor:not-allowed}.user-profile-books{margin-top:2rem}.user-profile-books h2{font-size:1.25rem;font-weight:600;color:var(--text-main);margin-bottom:1.5rem}@media(max-width:768px){.users-grid{grid-template-columns:1fr}.user-profile-header{flex-direction:column;text-align:center;padding:1.5rem}.user-profile-avatar,.user-profile-avatar-placeholder{width:100px;height:100px}.user-profile-name{font-size:1.5rem}.user-profile-stats{justify-content:center}.user-profile-follow-btn{width:100%}}.install-pwa-banner{position:fixed;bottom:0;left:0;right:0;background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;padding:1rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;z-index:9999;box-shadow:0 -4px 20px #00000026;animation:slideUp .3s ease-out}@keyframes slideUp{0%{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}.install-pwa-content{display:flex;align-items:center;gap:.75rem;flex:1}.install-pwa-icon{width:48px;height:48px;border-radius:12px;overflow:hidden;flex-shrink:0;background:#fff;padding:4px}.install-pwa-icon img{width:100%;height:100%;object-fit:contain}.install-pwa-text{display:flex;flex-direction:column;gap:.125rem}.install-pwa-text strong{font-size:1rem;font-weight:600}.install-pwa-text span{font-size:.875rem;opacity:.9}.ios-share-icon{display:inline-block;font-size:1rem;vertical-align:middle}.install-pwa-actions{display:flex;gap:.5rem;flex-shrink:0}.install-pwa-btn{background:#fff;color:#4f46e5;border:none;padding:.625rem 1.25rem;border-radius:8px;font-weight:600;font-size:.875rem;cursor:pointer;transition:all .2s}.install-pwa-btn:hover{background:#f0f0ff;transform:scale(1.02)}.install-pwa-dismiss{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3);padding:.625rem 1rem;border-radius:8px;font-size:.875rem;cursor:pointer;transition:all .2s}.install-pwa-dismiss:hover{background:#ffffff1a;border-color:#ffffff80}@media(max-width:480px){.install-pwa-banner{flex-direction:column;padding:1rem;gap:.75rem}.install-pwa-content,.install-pwa-actions{width:100%}.install-pwa-btn,.install-pwa-dismiss{flex:1;text-align:center}}