*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0f0f13;--surface:#18181f;--surface2:#22222c;--border:#2e2e3a;--text:#e8e8f0;--text-muted:#7c7c96;--purple:#7c3aed;--purple-light:#a78bfa;--reader-bg:#1a1a24;--reader-text:#ddd8f0;--font-ui:"Inter", system-ui, sans-serif;--font-book:"Merriweather", Georgia, serif;--sidebar-w:360px;--toc-w:220px;--radius:10px}html,body,#root{background:var(--bg);height:100%;color:var(--text);font-family:var(--font-ui);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.6}.app{height:100vh;display:flex;overflow:hidden}.toc-panel{width:var(--toc-w);background:var(--surface);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;display:flex;overflow:hidden}.toc-panel.collapsed{width:40px;overflow:visible}.toc-header{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:18px 16px 14px;display:flex}.toc-header .sidebar-collapse{margin-left:auto}.toc-title{letter-spacing:-.5px;color:var(--purple-light);font-size:18px;font-weight:700}.toc-book-title{color:var(--text);padding:14px 16px 2px;font-size:13px;font-weight:600}.toc-author{color:var(--text-muted);border-bottom:1px solid var(--border);padding:0 16px 12px;font-size:12px}.toc-list{flex:1;padding:8px 0;overflow-y:auto}.toc-item{text-align:left;width:100%;color:var(--text-muted);font-family:var(--font-ui);cursor:pointer;background:0 0;border:none;padding:7px 16px;font-size:12.5px;line-height:1.4;transition:background .12s,color .12s;display:block}.toc-item:hover{background:var(--surface2);color:var(--text)}.other-books{border-top:1px solid var(--border);flex-direction:column;flex-shrink:0;gap:8px;padding:12px 16px;display:flex}.other-books-title{color:var(--text-muted);font-size:11px;line-height:1.4}.other-book-link{background:var(--surface2);border:1px solid var(--border);border-radius:8px;flex-direction:column;gap:1px;padding:8px 10px;text-decoration:none;transition:border-color .12s,background .12s;display:flex}.other-book-link:hover{border-color:var(--purple);background:var(--bg)}.other-book-name{color:var(--text);font-size:13px;font-weight:600}.other-book-author{color:var(--text-muted);font-size:11.5px}.toc-footer{border-top:1px solid var(--border);flex-direction:column;flex-shrink:0;gap:8px;padding:12px 16px;display:flex}.toc-footer-row{justify-content:space-between;align-items:center;gap:10px;display:flex}.toc-footer-links{gap:14px;display:flex}.toc-terms{color:var(--text-muted);font-size:11.5px;text-decoration:none}.toc-terms:hover{color:var(--purple-light);text-decoration:underline}.copy-link-btn{background:var(--surface2);border:1px solid var(--border);width:100%;color:var(--text-muted);font-family:var(--font-ui);cursor:pointer;text-align:left;border-radius:6px;padding:7px 10px;font-size:12px;transition:color .15s,border-color .15s}.copy-link-btn:hover{color:var(--text);border-color:var(--purple)}.toc-user{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:11.5px;overflow:hidden}.toc-user strong{color:var(--text);font-weight:600}.logout-btn{background:var(--surface2);border:1px solid var(--border);color:var(--text-muted);font-family:var(--font-ui);cursor:pointer;border-radius:6px;flex-shrink:0;padding:6px 10px;font-size:12px;transition:color .15s,border-color .15s}.logout-btn:hover{color:var(--text);border-color:var(--purple)}.reader-layout{flex:1;min-width:0;display:flex;overflow:hidden}.viewer-area{background:var(--reader-bg);flex-direction:column;flex:1;min-width:0;display:flex;position:relative;overflow:hidden}.viewer-chrome{border-bottom:1px solid var(--border);min-height:36px;padding:10px 24px 6px}.section-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;font-size:12px}.epub-viewer{flex:1;padding:0 8px;overflow:hidden}.epub-viewer iframe{background:var(--reader-bg)!important}.nav-controls{border-top:1px solid var(--border);justify-content:center;gap:12px;padding:10px;display:flex}.nav-btn{background:var(--surface2);border:1px solid var(--border);color:var(--text);cursor:pointer;border-radius:50%;width:44px;height:44px;font-size:22px;line-height:1;transition:background .12s}.nav-btn:hover{background:var(--purple);border-color:var(--purple)}.reader-loading{background:var(--reader-bg);z-index:10;color:var(--text-muted);flex-direction:column;justify-content:center;align-items:center;gap:16px;display:flex;position:absolute;inset:0}.spinner{border:3px solid var(--border);border-top-color:var(--purple);border-radius:50%;width:36px;height:36px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.selection-popup{z-index:1000;background:var(--surface);border:1px solid var(--border);pointer-events:all;border-radius:8px;align-items:center;gap:6px;padding:6px 10px;display:flex;position:fixed;box-shadow:0 8px 24px #00000080}.popup-highlight-btn{color:var(--text);font-family:var(--font-ui);cursor:pointer;background:0 0;border:none;border-radius:5px;align-items:center;gap:6px;padding:2px 6px;font-size:13px;font-weight:500;transition:background .1s;display:flex}.popup-highlight-btn:hover{background:var(--surface2)}.popup-color-dot{border-radius:50%;width:12px;height:12px;display:inline-block}.popup-dismiss{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:2px 4px;font-size:15px}.popup-dismiss:hover{color:var(--text)}.popup-signin-note{color:var(--text-muted);white-space:nowrap;padding:2px 6px;font-size:13px}.comment-sidebar{width:var(--sidebar-w);background:var(--surface);border-left:1px solid var(--border);flex-direction:column;flex-shrink:0;display:flex;overflow:hidden}.sidebar-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 18px;display:flex}.sidebar-header h2{color:var(--text);font-size:14px;font-weight:600}.sidebar-header-actions{align-items:center;gap:8px;display:flex}.highlight-count{background:var(--purple);color:#fff;border-radius:12px;padding:2px 8px;font-size:11px;font-weight:700}.sidebar-collapse{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:0 2px;font-size:20px;line-height:1}.sidebar-collapse:hover{color:var(--text)}.comment-sidebar.collapsed{width:40px;overflow:visible}.sidebar-reopen{cursor:pointer;width:100%;color:var(--text-muted);background:0 0;border:none;flex-direction:column;flex:1;align-items:center;gap:10px;padding:16px 0;transition:color .12s,background .12s;display:flex}.sidebar-reopen:hover{color:var(--text);background:var(--surface2)}.sidebar-reopen-chevron{font-size:20px;line-height:1}.sidebar-reopen-label{writing-mode:vertical-rl;text-orientation:mixed;letter-spacing:.04em;font-size:12px;font-weight:600}@media (width<=600px){.app{position:relative}.comment-sidebar:not(.collapsed){z-index:50;width:85vw;max-width:340px;position:absolute;top:0;bottom:0;right:0;box-shadow:-8px 0 24px #00000080}.toc-panel:not(.collapsed){z-index:50;width:80vw;max-width:300px;position:absolute;top:0;bottom:0;left:0;box-shadow:8px 0 24px #00000080}}.sidebar-empty{text-align:center;color:var(--text-muted);flex:1;justify-content:center;align-items:center;padding:32px 24px;font-size:13px;line-height:1.7;display:flex}.highlight-list{flex-direction:column;flex:1;gap:10px;padding:12px;display:flex;overflow-y:auto}.highlight-card{background:var(--surface2);border:1px solid var(--border);border-left:3px solid var(--accent,#7c3aed);border-radius:var(--radius);cursor:pointer;transition:border-color .15s,box-shadow .15s;position:relative;overflow:hidden}.highlight-card.active{box-shadow:0 0 0 2px var(--accent,#7c3aed);border-color:var(--accent,#7c3aed)}.highlight-card-body{padding:12px 14px}.highlight-quote{font-family:var(--font-book);color:var(--text);-webkit-line-clamp:3;-webkit-box-orient:vertical;margin-bottom:8px;font-size:13px;font-style:italic;line-height:1.65;display:-webkit-box;overflow:hidden}.highlight-meta{color:var(--text-muted);align-items:center;gap:6px;font-size:12px;display:flex}.author-dot{border-radius:50%;flex-shrink:0;width:10px;height:10px}.author-dot.small{width:8px;height:8px}.author-name{color:var(--text);font-weight:500}.highlight-time{margin-left:auto}.delete-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:3px;padding:0 2px;font-size:16px;line-height:1}.delete-btn:hover{color:#f87171}.delete-btn.small{font-size:13px}.comment-toggle{color:var(--purple-light);font-family:var(--font-ui);cursor:pointer;background:0 0;border:none;padding:6px 0 0;font-size:12px;display:block}.comment-toggle:hover{text-decoration:underline}.comment-thread{border-top:1px solid var(--border);flex-direction:column;gap:10px;margin-top:12px;padding-top:10px;display:flex}.no-comments{color:var(--text-muted);font-size:12px;font-style:italic}.comment{align-items:flex-start;gap:8px;display:flex}.comment-content{flex:1;min-width:0}.comment-author{color:var(--text);font-size:12px;font-weight:600}.comment-time{color:var(--text-muted);margin-left:6px;font-size:11px}.comment-moderated{text-transform:uppercase;letter-spacing:.04em;color:#fbbf24;border:1px solid #fbbf2466;border-radius:4px;margin-left:6px;padding:0 4px;font-size:10px;font-weight:600}.comment-text{color:var(--text);word-break:break-word;margin-top:2px;font-size:13px;line-height:1.5}.comment-input-row{align-items:flex-start;gap:8px;margin-top:4px;display:flex}.comment-input{background:var(--bg);border:1px solid var(--border);color:var(--text);font-family:var(--font-ui);resize:none;border-radius:6px;flex:1;padding:8px 10px;font-size:13px;line-height:1.5;transition:border-color .15s}.comment-input:focus{border-color:var(--purple);outline:none}.comment-input::placeholder{color:var(--text-muted)}.post-btn{background:var(--purple);color:#fff;font-family:var(--font-ui);cursor:pointer;white-space:nowrap;border:none;border-radius:6px;padding:8px 12px;font-size:12px;font-weight:600;transition:opacity .15s}.post-btn:disabled{opacity:.4;cursor:default}.post-btn:not(:disabled):hover{opacity:.85}.user-setup-overlay{background:var(--bg);justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.user-setup-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;width:100%;max-width:420px;padding:40px 44px;box-shadow:0 24px 64px #00000080}.user-setup-logo{letter-spacing:-.5px;color:var(--purple-light);align-items:center;gap:10px;margin-bottom:24px;font-size:20px;font-weight:800;display:flex}.user-setup-card h1{letter-spacing:-.5px;margin-bottom:8px;font-size:24px;font-weight:700}.user-setup-card p{color:var(--text-muted);margin-bottom:28px;font-size:14px;line-height:1.6}.user-setup-card p em{color:var(--text);font-style:italic}.user-setup-card label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-top:20px;margin-bottom:8px;font-size:12px;font-weight:600;display:block}.user-setup-card input[type=text],.user-setup-card input[type=password]{background:var(--surface2);border:1px solid var(--border);width:100%;color:var(--text);font-family:var(--font-ui);border-radius:8px;padding:11px 14px;font-size:15px;transition:border-color .15s}.user-setup-card input[type=text]:focus,.user-setup-card input[type=password]:focus{border-color:var(--purple);outline:none}.user-setup-card input[type=text]::placeholder,.user-setup-card input[type=password]::placeholder{color:var(--text-muted)}.color-picker{gap:10px;margin-bottom:4px;display:flex}.color-swatch{background:var(--swatch);cursor:pointer;border:3px solid #0000;border-radius:50%;width:32px;height:32px;transition:transform .12s,border-color .12s}.color-swatch:hover{transform:scale(1.1)}.color-swatch.selected{border-color:#fff;transform:scale(1.15)}.btn-primary{background:var(--purple);color:#fff;width:100%;font-family:var(--font-ui);cursor:pointer;letter-spacing:-.2px;border:none;border-radius:10px;margin-top:28px;padding:14px;font-size:15px;font-weight:600;transition:opacity .15s,transform .12s;display:block}.btn-primary:not(:disabled):hover{opacity:.88;transform:translateY(-1px)}.btn-primary:disabled{opacity:.35;cursor:default}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.google-signin-section{margin-bottom:4px}.btn-google{color:#3c4043;width:100%;font-family:var(--font-ui);cursor:pointer;background:#fff;border:1px solid #dadce0;border-radius:8px;justify-content:center;align-items:center;gap:10px;padding:11px 14px;font-size:15px;font-weight:500;transition:background .15s,box-shadow .15s;display:flex}.btn-google:hover:not(:disabled){background:#f8f9fa;box-shadow:0 1px 3px #0003}.btn-google:disabled{opacity:.6;cursor:default}.google-signin-error{color:#f87171!important;margin-top:8px!important;margin-bottom:0!important;font-size:13px!important}.google-signed-in{color:var(--text);background:#4ade801a;border:1px solid #4ade8066;border-radius:8px;align-items:flex-start;gap:10px;padding:11px 14px;font-size:13.5px;line-height:1.5;display:flex}.google-signed-in strong{font-weight:600}.google-check{color:#0f0f13;background:#4ade80;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:18px;height:18px;margin-top:1px;font-size:12px;font-weight:700;display:flex}.setup-divider{color:var(--text-muted);align-items:center;gap:12px;margin:20px 0 4px;font-size:12px;display:flex}.setup-divider:before,.setup-divider:after{content:"";background:var(--border);flex:1;height:1px}.admin-login-error{color:#f87171!important;margin-top:8px!important;margin-bottom:0!important;font-size:13px!important}.homework-banner{background:color-mix(in srgb, var(--purple) 18%, var(--surface));border-bottom:1px solid color-mix(in srgb, var(--purple) 40%, var(--border));flex-shrink:0;align-items:center;gap:10px;padding:8px 20px;display:flex}.homework-banner-label{text-transform:uppercase;letter-spacing:.1em;color:var(--purple-light);flex-shrink:0;font-size:10px;font-weight:700}.homework-banner-range{color:var(--text);white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;font-size:13px;overflow:hidden}.homework-jump-btn{background:var(--purple);color:#fff;font-family:var(--font-ui);cursor:pointer;border:none;border-radius:6px;flex-shrink:0;padding:5px 12px;font-size:12px;font-weight:600;transition:opacity .15s}.homework-jump-btn:hover{opacity:.85}.homework-banner-sections{flex-wrap:wrap;flex:1;gap:6px;min-width:0;display:flex}.homework-section-chip{color:var(--text);font-family:var(--font-ui);cursor:pointer;white-space:nowrap;text-overflow:ellipsis;background:#7c3aed2e;border:1px solid #7c3aed73;border-radius:999px;max-width:220px;padding:3px 10px;font-size:12px;transition:background .15s;overflow:hidden}.homework-section-chip:hover{background:#7c3aed52}.admin-error{color:#fca5a5;background:#f871711f;border:1px solid #f8717166;border-radius:8px;margin:12px 14px 0;padding:10px 12px;font-size:12px;line-height:1.5}.homework-admin{border-top:1px solid var(--border);flex-shrink:0;padding:14px 14px 16px}.homework-admin-title{text-transform:uppercase;letter-spacing:.08em;color:var(--purple-light);margin-bottom:10px;font-size:11px;font-weight:700}.homework-admin-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-top:8px;margin-bottom:4px;font-size:10px;font-weight:600;display:block}.homework-admin-hint{color:var(--text-muted);margin-bottom:8px;font-size:11px;line-height:1.4}.homework-checklist{border:1px solid var(--border);background:var(--surface2);border-radius:6px;max-height:220px;padding:4px 0;overflow-y:auto}.homework-check{color:var(--text);cursor:pointer;align-items:center;gap:8px;padding:5px 10px;font-size:12px;line-height:1.3;display:flex}.homework-check:hover{background:var(--bg)}.homework-check input{accent-color:var(--purple);cursor:pointer;flex-shrink:0}.homework-check span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.homework-select{background:var(--surface2);border:1px solid var(--border);width:100%;color:var(--text);font-family:var(--font-ui);cursor:pointer;appearance:auto;border-radius:6px;padding:6px 8px;font-size:12px}.homework-select:focus{border-color:var(--purple);outline:none}.homework-admin-actions{gap:8px;margin-top:12px;display:flex}.homework-set-btn{background:var(--purple);color:#fff;font-family:var(--font-ui);cursor:pointer;border:none;border-radius:6px;flex:1;padding:7px 0;font-size:12px;font-weight:600;transition:opacity .15s}.homework-set-btn:hover{opacity:.85}.homework-clear-btn{background:var(--surface2);border:1px solid var(--border);color:var(--text-muted);font-family:var(--font-ui);cursor:pointer;border-radius:6px;padding:7px 12px;font-size:12px;transition:color .15s,border-color .15s}.homework-clear-btn:hover{color:#f87171;border-color:#f87171}.setup-note{background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;color:var(--text-muted)!important;margin-bottom:24px!important;font-size:13px!important;line-height:1.5!important}.setup-note strong{color:var(--text);font-weight:600}.comment-signin-note{color:var(--text-muted);margin-top:4px;font-size:12.5px;font-style:italic}.setup-terms{color:var(--text-muted);text-align:center;margin-top:16px;font-size:12px}.setup-terms a{color:var(--purple-light);text-decoration:none}.setup-terms a:hover{text-decoration:underline}.legal-page{background:var(--bg);justify-content:center;min-height:100vh;padding:48px 24px;display:flex;overflow-y:auto}.legal-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;width:100%;max-width:720px;padding:40px 44px;box-shadow:0 24px 64px #00000080}.legal-card h1{letter-spacing:-.5px;margin:20px 0 4px;font-size:26px;font-weight:700}.legal-updated{color:var(--text-muted);margin-bottom:24px;font-size:13px}.legal-card h2{color:var(--text);margin:24px 0 8px;font-size:16px;font-weight:600}.legal-card p{color:var(--text);margin-bottom:12px;font-size:14px;line-height:1.7}.legal-back{color:var(--purple-light);margin-top:28px;font-size:14px;font-weight:500;text-decoration:none;display:inline-block}.legal-back:hover{text-decoration:underline}
