:root{--font-main:"Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:"JetBrains Mono", monospace;--bg-primary:#0a0e17;--bg-secondary:#111726;--bg-tertiary:#1a2236;--bg-card:#111827bf;--bg-card-hover:#1e293bd9;--bg-glass:#ffffff0a;--border-subtle:#ffffff14;--border-focus:#6366f180;--border-active:#6366f1;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--text-light:#fff;--primary:#6366f1;--primary-hover:#4f46e5;--primary-light:#6366f126;--primary-glow:#6366f159;--accent-purple:#a855f7;--accent-cyan:#06b6d4;--success:#10b981;--success-light:#10b98126;--warning:#f59e0b;--warning-light:#f59e0b26;--danger:#ef4444;--danger-light:#ef444426;--shadow-sm:0 2px 8px #00000040;--shadow-md:0 8px 24px -4px #0006;--shadow-lg:0 20px 40px -8px #0009;--shadow-glow:0 0 30px #6366f140;--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--radius-full:9999px;--transition:all .25s cubic-bezier(.16, 1, .3, 1)}*{box-sizing:border-box;margin:0;padding:0}html{width:100%;max-width:100vw;overflow-x:hidden}body{font-family:var(--font-main);background-color:var(--bg-primary);color:var(--text-primary);background-image:radial-gradient(circle at 15% 10%,#6366f11f 0%,#0000 35%),radial-gradient(circle at 85% 65%,#a855f71a 0%,#0000 40%),radial-gradient(circle at 50% 90%,#06b6d414 0%,#0000 40%);background-attachment:fixed;width:100%;max-width:100vw;min-height:100vh;line-height:1.5;overflow-x:hidden}#root{width:100%;max-width:100%;overflow-x:hidden}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-container{flex-direction:column;min-height:100vh;display:flex}.main-content{flex:1;width:100%;max-width:1380px;margin:0 auto;padding:1.5rem 2rem 4rem}@media (width<=768px){.main-content{padding:.85rem .85rem 5.5rem}}h1,h2,h3,h4,h5{color:var(--text-primary);letter-spacing:-.02em;font-weight:700}.gradient-text{background:linear-gradient(135deg,#818cf8 0%,#c084fc 50%,#38bdf8 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.glass-panel{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:var(--transition)}.glass-panel:hover{border-color:#ffffff24}.glass-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);transition:var(--transition);padding:1.25rem}.glass-card:hover{box-shadow:var(--shadow-md);border-color:#6366f14d;transform:translateY(-2px)}.card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:var(--transition)}.card:hover{border-color:#6366f140}.btn{border-radius:var(--radius-md);font-size:.925rem;font-weight:600;font-family:var(--font-main);cursor:pointer;transition:var(--transition);white-space:nowrap;border:1px solid #0000;outline:none;justify-content:center;align-items:center;gap:.5rem;padding:.65rem 1.25rem;text-decoration:none;display:inline-flex}.btn-primary{background:linear-gradient(135deg, var(--primary) 0%, #4f46e5 100%);color:#fff;box-shadow:0 4px 14px #6366f159}.btn-primary:hover{background:linear-gradient(135deg,#7073ff 0%,#5b54ff 100%);transform:translateY(-1.5px);box-shadow:0 6px 20px #6366f173}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-subtle)}.btn-secondary:hover{background:#2d374ecc;border-color:#ffffff26}.btn-outline{color:var(--text-primary);border:1px solid var(--border-subtle);background:0 0}.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.btn-danger{background:var(--danger-light);color:var(--danger);border:1px solid #ef44444d}.btn-danger:hover{background:var(--danger);color:#fff}.btn-sm{border-radius:var(--radius-sm);padding:.4rem .85rem;font-size:.825rem}.btn-lg{border-radius:var(--radius-md);padding:.85rem 1.75rem;font-size:1.05rem}.badge{border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.04em;align-items:center;gap:.35rem;padding:.25rem .65rem;font-size:.75rem;font-weight:600;display:inline-flex}.badge-primary{background:var(--primary-light);color:#a5b4fc;border:1px solid #6366f140}.badge-success{background:var(--success-light);color:#34d399;border:1px solid #10b98140}.badge-warning{background:var(--warning-light);color:#fbbf24;border:1px solid #f59e0b40}.badge-danger{background:var(--danger-light);color:#f87171;border:1px solid #ef444440}.navbar{z-index:100;-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border-subtle);background:#0a0e17d9;padding:.75rem 2rem;position:sticky;top:0}.navbar-content{justify-content:space-between;align-items:center;gap:1.5rem;max-width:1380px;margin:0 auto;display:flex}.nav-brand{color:var(--text-primary);letter-spacing:-.03em;cursor:pointer;align-items:center;gap:.75rem;font-size:1.35rem;font-weight:800;text-decoration:none;display:flex}.brand-icon-box{border-radius:var(--radius-md);color:#fff;background:linear-gradient(135deg,#6366f1 0%,#a855f7 100%);justify-content:center;align-items:center;width:38px;height:38px;display:flex;box-shadow:0 0 15px #6366f180}.nav-links{border-radius:var(--radius-lg);border:1px solid var(--border-subtle);background:#11182699;align-items:center;gap:.5rem;padding:.3rem;display:flex}.nav-tab{border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:var(--transition);background:0 0;border:none;align-items:center;gap:.45rem;padding:.5rem 1rem;font-size:.875rem;font-weight:600;display:flex}.nav-tab:hover{color:var(--text-primary);background:#ffffff0a}.nav-tab.active{background:var(--primary);color:#fff;box-shadow:0 2px 10px #6366f166}.nav-stats{align-items:center;gap:.85rem;display:flex}.stat-pill{background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-full);color:var(--text-secondary);align-items:center;gap:.4rem;padding:.4rem .75rem;font-size:.825rem;font-weight:600;display:flex}.stat-pill strong{color:var(--text-primary)}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseGlow{0%,to{box-shadow:0 0 15px #6366f133}50%{box-shadow:0 0 25px #6366f166}}.animate-fade-in{animation:.35s ease-out forwards fadeIn}.test-layout{grid-template-columns:1fr 1fr;gap:1.5rem;min-height:calc(100vh - 180px);display:grid}@media (width<=900px){.test-layout{grid-template-columns:1fr}}.test-top-bar{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);justify-content:space-between;align-items:center;margin-bottom:1rem;padding:.75rem 1.25rem;display:flex}.passage-panel{border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:#111826b3;max-height:calc(100vh - 220px);padding:1.5rem;line-height:1.7;overflow-y:auto}.passage-text{color:#e2e8f0;font-size:1.025rem}.question-panel{border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:#111826b3;flex-direction:column;justify-content:space-between;max-height:calc(100vh - 220px);padding:1.5rem;display:flex;overflow-y:auto}.question-prompt{color:var(--text-primary);margin-bottom:1.5rem;font-size:1.1rem;font-weight:600;line-height:1.6}.options-container{flex-direction:column;gap:.75rem;margin-bottom:1.5rem;display:flex}.option-card{background:var(--bg-card);border:1.5px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);text-align:left;width:100%;color:var(--text-primary);font-family:var(--font-main);align-items:flex-start;gap:.85rem;padding:1rem 1.15rem;display:flex;position:relative}.option-card:hover:not(.disabled){background:var(--bg-tertiary);border-color:#6366f166}.option-card.selected{border-color:var(--primary);background:#6366f126;box-shadow:0 0 16px #6366f140}.option-card.eliminated{opacity:.4;background:#14192666;text-decoration:line-through}.option-card.correct-revealed{border-color:var(--success);background:#10b9812e}.option-card.incorrect-revealed{border-color:var(--danger);background:#ef44442e}.option-letter{background:var(--bg-tertiary);border:1px solid var(--border-subtle);width:28px;height:28px;color:var(--text-secondary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.85rem;font-weight:700;display:flex}.option-card.selected .option-letter{background:var(--primary);color:#fff;border-color:var(--primary)}.eliminate-btn{color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);transition:var(--transition);background:0 0;border:none;flex-shrink:0;margin-left:auto;padding:.2rem}.eliminate-btn:hover{color:var(--danger)}.modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;background:#030712bf;justify-content:center;align-items:center;padding:1.5rem;display:flex;position:fixed;inset:0}.modal-content{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);width:100%;max-width:720px;max-height:90vh;box-shadow:var(--shadow-lg);padding:2rem;animation:.25s ease-out fadeIn;overflow-y:auto}.radar-container{justify-content:center;align-items:center;padding:1rem;display:flex;position:relative}.skill-bar-container{flex-direction:column;gap:.35rem;display:flex}.skill-bar-track{background:var(--border-subtle);border-radius:var(--radius-full);width:100%;height:8px;overflow:hidden}.skill-bar-fill{border-radius:var(--radius-full);height:100%;transition:width .6s cubic-bezier(.16,1,.3,1)}.formula-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;display:grid}.formula-card{background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);text-align:center;padding:1rem}.formula-card h5{color:#818cf8;margin-bottom:.5rem;font-size:.9rem}.formula-card code{font-family:var(--font-mono);color:#38bdf8;border-radius:var(--radius-sm);background:#0000004d;padding:.25rem .5rem;font-size:.95rem;display:block}.desmos-tip-banner{color:#bae6fd;background:#38bdf81a;border:1px solid #38bdf84d}.desmos-tip-banner code{color:#7dd3fc;font-family:var(--font-mono);background:#0000004d;border-radius:4px;padding:1px 6px;font-size:.85em}.desmos-tip-icon{color:#38bdf8}.exam-mode-active{height:100vh!important;max-height:100vh!important;overflow:hidden!important}.main-content-exam{background:#0f172a;flex-direction:column;width:100vw;max-width:100vw;height:100vh;margin:0;padding:0;display:flex;overflow:hidden}.bluebook-container{color:#f1f5f9;-webkit-user-select:none;user-select:none;background:#090d16;flex-direction:column;width:100vw;height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;display:flex;overflow:hidden}.bluebook-top-bar{z-index:50;background:#111827;border-bottom:1px solid #1f2937;flex-shrink:0;justify-content:space-between;align-items:center;height:56px;padding:0 1.5rem;display:flex}.bluebook-section-title{color:#fff;letter-spacing:-.01em;font-size:.95rem;font-weight:700}.bluebook-directions-link{color:#38bdf8;cursor:pointer;text-underline-offset:3px;background:0 0;border:none;margin-left:.75rem;padding:0;font-size:.8rem;text-decoration:underline}.bluebook-timer-box{background:#1f2937;border:1px solid #374151;border-radius:4px;align-items:center;gap:.65rem;padding:.35rem .85rem;display:flex}.bluebook-timer-display{font-family:var(--font-mono);color:#f9fafb;font-size:1.05rem;font-weight:700}.bluebook-timer-hide-btn{color:#9ca3af;cursor:pointer;text-underline-offset:2px;background:0 0;border:none;padding:0 .2rem;font-size:.75rem;text-decoration:underline}.bluebook-timer-hide-btn:hover{color:#fff}.bluebook-tool-btn{color:#e5e7eb;cursor:pointer;background:#1f2937;border:1px solid #374151;border-radius:4px;align-items:center;gap:.4rem;padding:.4rem .75rem;font-size:.8rem;font-weight:600;transition:all .15s;display:flex}.bluebook-tool-btn:hover{color:#fff;background:#374151}.bluebook-tool-btn.active{color:#fff;background:#3b82f6;border-color:#3b82f6}.bluebook-tool-btn.active.annotate-active{color:#0f172a;background:#eab308;border-color:#facc15;font-weight:700}.bluebook-tool-badge{letter-spacing:.04em;background:#0003;border-radius:9999px;margin-left:.2rem;padding:.08rem .35rem;font-size:.65rem}.bluebook-annotate-banner{color:#fef08a;z-index:30;background:linear-gradient(90deg,#eab30826,#38bdf81a);border-bottom:1px solid #eab30859;justify-content:space-between;align-items:center;padding:.4rem 1.25rem;font-size:.8rem;animation:.2s ease-in fadeIn;display:flex}[data-theme=light] .bluebook-annotate-banner{color:#854d0e;background:#fef9c3;border-bottom-color:#fde047}.bluebook-highlight{cursor:pointer;border-radius:3px;padding:1px 3px;font-weight:500;text-decoration:none;transition:all .15s;position:relative;box-shadow:0 1px 2px #00000014;color:#0f172a!important;-webkit-user-select:text!important;user-select:text!important;-webkit-touch-callout:default!important}.bluebook-passage-content,.bluebook-prompt-text{-webkit-user-select:text!important;user-select:text!important;-webkit-touch-callout:default!important}.bluebook-highlight:hover{filter:brightness(.92);outline:1.5px solid #0000004d}.bluebook-highlight-note-pin{vertical-align:super;cursor:pointer;margin-left:3px;font-size:.72rem;display:inline-block}.bluebook-annotation-menu{color:#f8fafc;z-index:99999;touch-action:manipulation;background:#1e293b;border:1px solid #475569;border-radius:8px;align-items:center;gap:.4rem;padding:.35rem .5rem;animation:.15s cubic-bezier(.16,1,.3,1) scaleIn;display:flex;position:fixed;transform:translateY(-100%);box-shadow:0 10px 25px #0000008c}[data-theme=light] .bluebook-annotation-menu{color:#0f172a;background:#fff;border:1px solid #cbd5e1;box-shadow:0 10px 25px #00000026}.bluebook-ann-btn{cursor:pointer;white-space:nowrap;border:none;border-radius:6px;align-items:center;gap:.35rem;padding:.35rem .65rem;font-size:.78rem;font-weight:600;transition:all .15s;display:inline-flex}.bluebook-ann-btn.primary{color:#000;background:#eab308}.bluebook-ann-btn.primary:hover{background:#facc15}.bluebook-ann-btn.secondary{color:#e2e8f0;background:#334155}[data-theme=light] .bluebook-ann-btn.secondary{color:#334155;background:#f1f5f9}.bluebook-ann-btn.secondary:hover{color:#fff;background:#475569}[data-theme=light] .bluebook-ann-btn.secondary:hover{color:#0f172a;background:#e2e8f0}.bluebook-ann-btn.danger{color:#f87171;background:#ef444426;border:1px solid #ef44444d}.bluebook-ann-btn.danger:hover{color:#fff;background:#ef4444}.bluebook-ann-color-dots{border-left:1px solid #334155;border-right:1px solid #334155;align-items:center;gap:.3rem;padding:0 .25rem;display:flex}[data-theme=light] .bluebook-ann-color-dots{border-left-color:#e2e8f0;border-right-color:#e2e8f0}.bluebook-ann-dot{cursor:pointer;border:1.5px solid #0003;border-radius:50%;width:18px;height:18px;padding:0;transition:transform .15s}.bluebook-ann-dot:hover{transform:scale(1.2)}.bluebook-ann-dot.active{transform:scale(1.25);box-shadow:0 0 0 2px #38bdf8}.bluebook-ann-note-box{align-items:center;gap:.35rem;margin-left:.25rem;display:flex}.bluebook-ann-note-box input{color:#fff;background:#0f172a;border:1px solid #334155;border-radius:4px;outline:none;width:160px;padding:.25rem .5rem;font-size:.78rem}[data-theme=light] .bluebook-ann-note-box input{color:#0f172a;background:#f8fafc;border-color:#cbd5e1}.bluebook-ann-note-box button{color:#0f172a;cursor:pointer;background:#38bdf8;border:none;border-radius:4px;padding:.28rem .55rem;font-size:.72rem;font-weight:700}.bluebook-content-split{flex:1;display:flex;position:relative;overflow:hidden}.bluebook-passage-col{color:#e2e8f0;background:#0b1120;border-right:2px solid #1f2937;flex:1;padding:2.25rem 2.5rem;font-size:1.05rem;line-height:1.75;overflow-y:auto}.bluebook-question-col{background:#090d16;flex-direction:column;flex:1;padding:2.25rem 2.5rem;display:flex;overflow-y:auto}.bluebook-q-header{border-bottom:1px solid #1f2937;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding-bottom:1rem;display:flex}.bluebook-q-number-box{color:#fff;background:#000;border:1px solid #374151;border-radius:4px;padding:.35rem .75rem;font-size:.95rem;font-weight:800}.bluebook-mark-review-toggle{color:#94a3b8;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:4px;align-items:center;gap:.45rem;padding:.35rem .65rem;font-size:.85rem;font-weight:600;display:flex}.bluebook-mark-review-toggle.marked{color:#f59e0b;background:#f59e0b1a;border-color:#f59e0b66}.bluebook-strikethrough-toggle{color:#94a3b8;cursor:pointer;letter-spacing:.05em;background:0 0;border:1px solid #374151;border-radius:4px;padding:.3rem .6rem;font-size:.8rem;font-weight:700}.bluebook-strikethrough-toggle.active{color:#fff;background:#ef4444;border-color:#ef4444}.bluebook-prompt-text{color:#f8fafc;margin-bottom:1.5rem;font-size:1.05rem;font-weight:500;line-height:1.6}.bluebook-choices-list{flex-direction:column;gap:.75rem;display:flex}.bluebook-choice-item{cursor:pointer;background:#111827;border:1.5px solid #1f2937;border-radius:6px;align-items:flex-start;gap:.85rem;padding:.85rem 1rem;transition:all .15s;display:flex;position:relative}.bluebook-choice-item:hover:not(.eliminated){background:#161f30;border-color:#4b5563}.bluebook-choice-item.selected{background:#38bdf814;border-color:#38bdf8}.bluebook-choice-letter{color:#cbd5e1;border:1.5px solid #4b5563;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:26px;height:26px;margin-top:1px;font-size:.8rem;font-weight:700;display:flex}.bluebook-choice-item.selected .bluebook-choice-letter{color:#000;background:#38bdf8;border-color:#38bdf8}.bluebook-choice-text{color:#f1f5f9;flex:1;font-size:.95rem;line-height:1.5}.bluebook-choice-item.eliminated{opacity:.35;background:#0a0e17;border-color:#1a2234}.bluebook-choice-item.eliminated .bluebook-choice-text{text-decoration:line-through}.bluebook-choice-strike-btn{color:#64748b;cursor:pointer;background:0 0;border:none;border-radius:4px;padding:.2rem .4rem;font-size:.75rem}.bluebook-choice-strike-btn:hover{color:#f87171}.bluebook-bottom-bar{z-index:50;background:#111827;border-top:1px solid #1f2937;flex-shrink:0;justify-content:space-between;align-items:center;height:58px;padding:0 1.5rem;display:flex;position:relative}.bluebook-footer-label{color:#94a3b8;font-size:.85rem;font-weight:600}.bluebook-nav-popover-trigger{color:#fff;cursor:pointer;background:#000;border:1px solid #374151;border-radius:4px;align-items:center;gap:.5rem;padding:.45rem 1.25rem;font-size:.9rem;font-weight:700;display:flex}.bluebook-nav-popover-trigger:hover{background:#1f2937;border-color:#4b5563}.bluebook-nav-buttons{align-items:center;gap:.5rem;display:flex}.bluebook-nav-btn{color:#fff;cursor:pointer;background:#1f2937;border:1px solid #374151;border-radius:4px;align-items:center;gap:.35rem;padding:.45rem 1.25rem;font-size:.875rem;font-weight:600;display:flex}.bluebook-nav-btn:hover:not(:disabled){background:#374151}.bluebook-nav-btn:disabled{opacity:.4;cursor:not-allowed}.bluebook-nav-btn-primary{color:#fff;background:#2563eb;border-color:#2563eb}.bluebook-nav-btn-primary:hover{background:#1d4ed8;border-color:#1d4ed8}.bluebook-navigator-sheet{z-index:60;background:#111827;border:1.5px solid #374151;border-radius:8px 8px 0 0;width:90%;max-width:680px;padding:1.25rem;animation:.2s fadeIn;position:absolute;bottom:60px;left:50%;transform:translate(-50%);box-shadow:0 -10px 30px #0009}.bluebook-grid-tile{color:#fff;cursor:pointer;background:#1f2937;border:1px solid #374151;border-radius:4px;justify-content:center;align-items:center;width:42px;height:42px;font-size:.9rem;font-weight:700;display:flex;position:relative}.bluebook-grid-tile.answered{background:#000;border-color:#4b5563}.bluebook-grid-tile.unanswered{color:#94a3b8;background:#111827;border:1.5px dashed #64748b}.bluebook-grid-tile.current{box-shadow:0 0 10px #38bdf866;border:2px solid #38bdf8!important}.bluebook-grid-tile .tile-flag{background:#f59e0b;border-radius:50%;width:7px;height:7px;position:absolute;top:2px;right:2px}.input{border-radius:var(--radius-md);width:100%;color:var(--text-primary);font-family:var(--font-main);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0f172abf;border:1px solid #ffffff1f;outline:none;padding:.75rem 1rem;font-size:.92rem;line-height:1.5;transition:border-color .2s,box-shadow .2s,background .2s;box-shadow:inset 0 2px 4px #00000040}.input::placeholder{color:#64748b;font-size:.88rem}.input:hover{background:#111827e6;border-color:#6366f166}.input:focus{background:#111827fa;border-color:#818cf8;box-shadow:0 0 0 3px #6366f140,inset 0 1px 2px #0003}.input:disabled{opacity:.55;cursor:not-allowed;background:#0f172a66}.input-icon-left{color:#64748b;pointer-events:none;transition:color .2s;position:absolute;top:50%;left:.9rem;transform:translateY(-50%)}.input-icon-right{color:#64748b;cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:0;transition:color .2s;display:flex;position:absolute;top:50%;right:.9rem;transform:translateY(-50%)}.input-icon-right:hover{color:#e2e8f0}.input-wrapper{align-items:center;display:flex;position:relative}.input-wrapper:focus-within .input-icon-left{color:#818cf8}.form-label{color:#cbd5e1;letter-spacing:.01em;justify-content:space-between;align-items:center;margin-bottom:.35rem;font-size:.8rem;font-weight:600;display:flex}.form-hint{color:#64748b;margin-top:.35rem;font-size:.72rem}:root[data-theme=light]{--bg-primary:#f8fafc;--bg-secondary:#fff;--bg-tertiary:#f1f5f9;--bg-card:#fffffff2;--bg-card-hover:#fff;--bg-glass:#ffffffe0;--border-subtle:#e2e8f0;--border-focus:#6366f166;--border-active:#4f46e5;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#64748b;--text-light:#fff;--primary:#4f46e5;--primary-hover:#4338ca;--primary-light:#4f46e51a;--primary-glow:#4f46e533;--accent-purple:#9333ea;--accent-cyan:#0284c7;--success:#059669;--success-light:#10b9811f;--warning:#d97706;--warning-light:#f59e0b1f;--danger:#dc2626;--danger-light:#ef44441f;--shadow-sm:0 1px 3px #0f172a14, 0 1px 2px #0f172a0a;--shadow-md:0 4px 14px -2px #0f172a14, 0 2px 6px -1px #0f172a0a;--shadow-lg:0 12px 30px -4px #0f172a1f;--shadow-glow:0 0 25px #4f46e526}[data-theme=light] body{background-color:var(--bg-primary);color:var(--text-primary);background-image:radial-gradient(circle at 15% 10%,#6366f10f 0%,#0000 35%),radial-gradient(circle at 85% 65%,#a855f70d 0%,#0000 40%),radial-gradient(circle at 50% 90%,#06b6d40a 0%,#0000 40%)}[data-theme=light] ::-webkit-scrollbar-track{background:#f1f5f9}[data-theme=light] ::-webkit-scrollbar-thumb{background:#cbd5e1}[data-theme=light] ::-webkit-scrollbar-thumb:hover{background:#94a3b8}[data-theme=light] .navbar{background:#ffffffeb;border-bottom:1px solid #e2e8f0;box-shadow:0 1px 4px #0f172a0d}[data-theme=light] .nav-links{background:#f1f5f9;border-color:#e2e8f0}[data-theme=light] .nav-tab{color:#64748b}[data-theme=light] .nav-tab:hover{color:#0f172a;background:#0000000a}[data-theme=light] .nav-tab.active{color:#fff;background:#4f46e5;box-shadow:0 2px 10px #4f46e559}[data-theme=light] .stat-pill{color:#475569;background:#fff;border-color:#e2e8f0}[data-theme=light] .stat-pill strong{color:#0f172a}[data-theme=light] .glass-panel{background:#fff;border-color:#e2e8f0;box-shadow:0 4px 16px #0f172a0f}[data-theme=light] .glass-panel:hover{border-color:#cbd5e1;box-shadow:0 6px 20px #0f172a17}[data-theme=light] .glass-card{background:#fff;border-color:#e2e8f0;box-shadow:0 1px 3px #0f172a0d}[data-theme=light] .glass-card:hover{background:#fff;border-color:#6366f159;box-shadow:0 4px 12px #0f172a14}[data-theme=light] .card{background:#fff;border-color:#e2e8f0;box-shadow:0 4px 16px #0f172a0f}[data-theme=light] .card:hover{border-color:#cbd5e1}[data-theme=light] .option-card{color:#0f172a;background:#fff;border-color:#cbd5e1}[data-theme=light] .option-card:hover:not(.disabled){background:#f8fafc;border-color:#818cf8}[data-theme=light] .option-card.selected{background:#4f46e514;border-color:#4f46e5}[data-theme=light] .formula-card{background:#fff;border-color:#e2e8f0;box-shadow:0 1px 3px #0f172a0d}[data-theme=light] .formula-card h5{color:#4f46e5}[data-theme=light] .formula-card code{color:#0284c7;background:#f1f5f9;border:1px solid #e2e8f0}[data-theme=light] .skill-bar-track{background:#e2e8f0}[data-theme=light] .btn-secondary{color:#0f172a;background:#f1f5f9;border-color:#e2e8f0}[data-theme=light] .btn-secondary:hover{background:#e2e8f0;border-color:#cbd5e1}[data-theme=light] .btn-outline{color:#0f172a;border-color:#cbd5e1}[data-theme=light] .btn-outline:hover{color:#4f46e5;background:#6366f114;border-color:#4f46e5}[data-theme=light] .input{color:#0f172a;background:#fff;border-color:#cbd5e1;box-shadow:inset 0 1px 2px #0000000a}[data-theme=light] .input::placeholder{color:#94a3b8}[data-theme=light] .input:hover{background:#fff;border-color:#94a3b8}[data-theme=light] .input:focus{background:#fff;border-color:#4f46e5;box-shadow:0 0 0 3px #4f46e526}[data-theme=light] .input-icon-left,[data-theme=light] .input-icon-right{color:#64748b}[data-theme=light] .input-icon-right:hover{color:#0f172a}[data-theme=light] .input-wrapper:focus-within .input-icon-left{color:#4f46e5}[data-theme=light] .form-label{color:#334155}[data-theme=light] .form-hint{color:#64748b}[data-theme=light] .modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0f172a73}[data-theme=light] .modal-content{color:#0f172a;background:#fff;border-color:#e2e8f0;box-shadow:0 20px 45px -10px #0f172a33}[data-theme=light] .desmos-tip-banner{color:#0369a1;background:#0284c714;border:1px solid #0284c740}[data-theme=light] .desmos-tip-banner strong{color:#0c4a6e}[data-theme=light] .desmos-tip-banner code{color:#0284c7;background:#0284c71f;border:1px solid #0284c733;font-weight:600}[data-theme=light] .desmos-tip-icon{color:#0284c7}[data-theme=light] .badge-primary{color:#4f46e5;background:#4f46e51a;border-color:#4f46e540}[data-theme=light] .badge-success{color:#059669;background:#10b9811f;border-color:#10b98140}[data-theme=light] .badge-warning{color:#b45309;background:#f59e0b1f;border-color:#f59e0b40}[data-theme=light] .badge-danger{color:#dc2626;background:#ef44441f;border-color:#ef444440}[data-theme=light] .bluebook-container{color:#1e293b;background:#f8fafc}[data-theme=light] .bluebook-top-bar{background:#fff;border-bottom:1px solid #e2e8f0}[data-theme=light] .bluebook-section-title{color:#0f172a}[data-theme=light] .bluebook-directions-link{color:#4f46e5}[data-theme=light] .bluebook-timer-box{background:#f1f5f9;border-color:#e2e8f0}[data-theme=light] .bluebook-timer-display{color:#0f172a}[data-theme=light] .bluebook-timer-hide-btn{color:#64748b}[data-theme=light] .bluebook-timer-hide-btn:hover{color:#0f172a}[data-theme=light] .bluebook-tool-btn{color:#334155;background:#fff;border-color:#e2e8f0}[data-theme=light] .bluebook-tool-btn:hover{color:#0f172a;background:#f1f5f9}[data-theme=light] .bluebook-tool-btn.active{color:#fff;background:#4f46e5;border-color:#4f46e5}[data-theme=light] .bluebook-passage-col{color:#1e293b;background:#fff;border-right-color:#e2e8f0}[data-theme=light] .bluebook-question-col{color:#1e293b;background:#f8fafc}[data-theme=light] .bluebook-q-number-box{color:#fff;background:#0f172a}[data-theme=light] .bluebook-mark-review-toggle{color:#475569;background:#fff;border-color:#cbd5e1}[data-theme=light] .bluebook-mark-review-toggle:hover{color:#0f172a;background:#f1f5f9}[data-theme=light] .bluebook-prompt-text{color:#0f172a}[data-theme=light] .bluebook-choice-item{color:#1e293b;background:#fff;border-color:#cbd5e1}[data-theme=light] .bluebook-choice-item:hover:not(.eliminated){background:#6366f10a;border-color:#6366f1}[data-theme=light] .bluebook-choice-item.selected{background:#4f46e514;border-color:#4f46e5}[data-theme=light] .bluebook-choice-letter{color:#475569;background:#f8fafc;border-color:#94a3b8}[data-theme=light] .bluebook-choice-item.selected .bluebook-choice-letter{color:#fff;background:#4f46e5;border-color:#4f46e5}[data-theme=light] .bluebook-choice-text{color:#1e293b}[data-theme=light] .bluebook-bottom-bar{background:#fff;border-top-color:#e2e8f0}[data-theme=light] .bluebook-footer-label{color:#64748b}[data-theme=light] .bluebook-nav-popover-trigger{color:#0f172a;background:#fff;border-color:#e2e8f0}[data-theme=light] .bluebook-nav-popover-trigger:hover{background:#f1f5f9}[data-theme=light] .bluebook-nav-btn{color:#0f172a;background:#fff;border-color:#cbd5e1}[data-theme=light] .bluebook-nav-btn:hover:not(:disabled){background:#f1f5f9}[data-theme=light] .bluebook-nav-btn-primary{color:#fff;background:#4f46e5;border-color:#4f46e5}[data-theme=light] .bluebook-nav-btn-primary:hover{background:#4338ca}[data-theme=light] .bluebook-navigator-sheet{background:#fff;border-color:#cbd5e1;box-shadow:0 10px 30px #00000026}[data-theme=light] .bluebook-grid-tile{color:#1e293b;background:#fff;border-color:#cbd5e1}[data-theme=light] .bluebook-grid-tile.answered{color:#fff;background:#0f172a;border-color:#0f172a}[data-theme=light] .bluebook-grid-tile.unanswered{color:#475569;background:#fff;border:1.5px dashed #94a3b8}[data-theme=light] .bluebook-grid-tile.current{outline-offset:2px;outline:2px solid #4f46e5}@media (width<=768px){.hide-on-mobile{display:none!important}}@media (width>=769px){.show-on-mobile{display:none!important}}.mobile-bottom-nav{-webkit-backdrop-filter:blur(16px);border-top:1px solid var(--border-subtle);z-index:1000;background:#0a0e17f0;justify-content:space-around;align-items:center;height:60px;padding:0 .25rem;display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -4px 20px #0006}[data-theme=light] .mobile-bottom-nav{background:#fffffff2;border-top-color:#e2e8f0;box-shadow:0 -4px 20px #00000014}.mobile-nav-item{height:100%;color:var(--text-secondary);cursor:pointer;transition:var(--transition);background:0 0;border:none;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;padding:.25rem 0;font-size:.68rem;font-weight:600;text-decoration:none;display:flex}.mobile-nav-item:hover{color:var(--text-primary)}.mobile-nav-item.active{color:var(--primary)}[data-theme=light] .mobile-nav-item.active{color:#4f46e5}@media (width<=768px){.navbar{padding:.6rem .85rem}.navbar-content{gap:.5rem}.nav-brand{gap:.5rem;font-size:1.15rem}.brand-icon-box{width:32px;height:32px}.nav-stats{gap:.4rem}.stat-pill{padding:.3rem .55rem;font-size:.75rem}.nav-tools-dropdown{border-radius:12px!important;width:90%!important;max-width:360px!important;max-height:75vh!important;position:fixed!important;inset:auto auto 66px 50%!important;overflow-y:auto!important;transform:translate(-50%)!important;box-shadow:0 -10px 40px #0009!important}.modal-overlay{align-items:center!important;padding:.5rem!important}.modal-content{border-radius:12px!important;width:100%!important;max-width:100%!important;max-height:94vh!important;padding:1.25rem 1rem!important}.dashboard-split-grid,.ai-lab-split-grid{grid-template-columns:1fr!important;gap:1.25rem!important}.responsive-two-col{grid-template-columns:1fr!important;gap:1rem!important}.scorecard-walkthrough-split{flex-direction:column!important;grid-template-columns:1fr!important;display:flex!important}.scorecard-walkthrough-passage{border-right:none!important;border-bottom:1.5px solid var(--border-subtle)!important;max-height:38vh!important}}@media (width<=820px){.bluebook-top-bar{height:52px;padding:0 .65rem}.bluebook-section-title{white-space:nowrap;text-overflow:ellipsis;max-width:120px;font-size:.82rem;overflow:hidden}.bluebook-directions-link{display:none}.bluebook-timer-box{gap:.35rem;padding:.25rem .55rem}.bluebook-timer-display{font-size:.9rem}.bluebook-timer-hide-btn{display:none}.bluebook-tool-btn{gap:.25rem;padding:.3rem .5rem;font-size:.72rem}@media (width<=580px){.bluebook-tool-btn span:not(.bluebook-tool-badge){display:none}}.bluebook-content-split{flex-direction:column;overflow-y:auto}.bluebook-passage-col{border-bottom:2px solid #1f2937;border-right:none;flex:none;max-height:36vh;padding:1rem .85rem;font-size:.95rem;line-height:1.6}[data-theme=light] .bluebook-passage-col{border-bottom-color:#cbd5e1}.bluebook-question-col{flex:1;min-height:50vh;padding:1rem .85rem}.bluebook-prompt-text{margin-bottom:1rem;font-size:.95rem;line-height:1.55}.bluebook-choices-list{gap:.6rem}.bluebook-choice-item{gap:.65rem;padding:.65rem .75rem}.bluebook-choice-letter{width:24px;height:24px;font-size:.75rem}.bluebook-choice-text{font-size:.88rem}.bluebook-bottom-bar{height:54px;padding:0 .65rem}.bluebook-footer-label{display:none}.bluebook-nav-popover-trigger{gap:.35rem;padding:.35rem .7rem;font-size:.8rem}.bluebook-nav-btn{padding:.4rem .85rem;font-size:.8rem}.bluebook-navigator-sheet{width:95%;max-height:75vh;padding:1rem .65rem;bottom:56px;overflow-y:auto}.bluebook-grid-tile{width:36px;height:36px;font-size:.82rem}.bluebook-passage-content,.bluebook-prompt-text,.bluebook-passage-col,.bluebook-question-col{-webkit-user-select:text!important;user-select:text!important;-webkit-touch-callout:default!important}.bluebook-annotation-menu{z-index:999999!important;white-space:nowrap!important;touch-action:manipulation!important;background:#1e293b!important;border:1.5px solid #38bdf8!important;border-radius:9999px!important;flex-wrap:nowrap!important;justify-content:center!important;width:auto!important;max-width:95vw!important;padding:.35rem .65rem!important;position:fixed!important;inset:auto auto 58px 50%!important;transform:translate(-50%)!important;box-shadow:0 8px 30px #000000a6!important}.bluebook-ann-btn,.bluebook-ann-dot{touch-action:manipulation!important;-webkit-tap-highlight-color:transparent!important}.bluebook-annotate-banner{box-sizing:border-box!important;min-height:38px!important;padding:.35rem .65rem!important;font-size:.76rem!important}}