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#6366f180}}.tutor-layout{display:flex;min-height:100vh;background:var(--tutor-bg);font-family:var(--font-main)}.tutor-sidebar{width:224px;background:linear-gradient(180deg,#0f0c29,#1e1b4b 60%,#16213e);border-right:1px solid rgba(99,102,241,.2);display:flex;flex-direction:column;flex-shrink:0;position:sticky;top:0;height:100vh;overflow-y:auto}.tutor-header-brand{background:transparent;padding:24px 16px 20px;display:flex;flex-direction:column;align-items:center;gap:8px;border-bottom:1px solid rgba(99,102,241,.2)}.tutor-header-brand-icon{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#4338ca,#6366f1,#0ea5e9);display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;box-shadow:0 0 20px #6366f199,0 0 40px #6366f140,inset 0 1px 4px #fff3;animation:mnBrandPulse 3s ease-in-out infinite}@keyframes mnBrandPulse{0%,to{box-shadow:0 0 20px #6366f199,0 0 40px #6366f140}50%{box-shadow:0 0 30px #6366f1e6,0 0 60px 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rgba(255,255,255,.1)}.tutor-header-brand-name{color:#fff!important;font-weight:800}.tutor-header-brand-sub{color:#fff9!important;font-size:10px!important;letter-spacing:.12em;text-transform:uppercase}.tutor-nav-item{color:#ffffffbf!important;border-radius:10px}.tutor-nav-item:hover{background:#ffffff1a!important;color:#fff!important}.tutor-nav-item.active{background:#ffffff26!important;color:#fff!important;font-weight:700}.btn-exit-tutor{background:#ef44441f!important;color:#fca5a5e6!important;border:1px solid rgba(239,68,68,.25)!important;transition:all 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10px}}.btn-volver-ejercicio{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,#0ea5e9,#6366f1);color:#fff;border:none;border-radius:12px;padding:10px 20px;font-size:14px;font-weight:700;cursor:pointer;margin-bottom:20px;font-family:var(--font-main);box-shadow:0 4px 14px #0ea5e94d;transition:box-shadow .2s,transform .15s}.btn-volver-ejercicio:hover{box-shadow:0 6px 20px #0ea5e973;transform:translateY(-1px)}@media(max-width:768px){.btn-volver-ejercicio{width:100%;justify-content:center;font-size:13px}}@media(max-width:768px){.btn-exit-tutor{flex-shrink:0!important;width:auto!important;margin:0 8px!important;padding:8px 12px!important;align-self:center;white-space:nowrap;font-size:11px!important;border-radius:10px!important}}.ejercicio-original-referencia{background:#f0f9ff;border:2px solid #bae6fd;border-radius:12px;padding:.9rem 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transparent}.tutor-panel.nivel-1{background:#fefce8;border-left-color:#eab308}.tutor-panel.nivel-2{background:#fff7ed;border-left-color:#f97316}.tutor-panel.nivel-3{background:#f0f9ff;border-left-color:#0ea5e9}.tutor-header{display:flex;align-items:center;gap:.5rem;margin-bottom:.6rem}.tutor-icono{font-size:1.3rem}.tutor-etiqueta{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#475569}.tutor-mensaje{font-size:1rem;font-weight:500;color:#1e293b;line-height:1.5;margin:0 0 1rem}.tutor-vertical{margin-top:1rem}.tutor-paso-texto{margin-top:1rem;padding:.8rem 1rem;background:#fff;border-radius:8px;font-size:.95rem;color:#334155;border:1px solid #e2e8f0;line-height:1.5}@keyframes tutorAparecer{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.btn-siguiente-paso-tutor{margin-top:.8rem;padding:.6rem 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li{display:flex;align-items:center;gap:7px;font-size:12px;color:#475569}.dot{width:6px;height:6px;border-radius:50%;flex-shrink:0}.dot-green{background:#639922}.dot-red{background:#d85a30}.dot-blue{background:#185fa5}.methodology-footer{display:flex;align-items:flex-start;gap:8px;padding:.8rem 1.5rem;background:#f8fafc;color:#64748b}.methodology-footer p{font-size:12px;color:#64748b;margin:0;line-height:1.4}@media(prefers-color-scheme:dark){.methodology-panel{background:#1e293b;border-color:#334155}.methodology-header{background:#0f172a;border-color:#334155}.methodology-title{color:#f1f5f9}.methodology-subtitle,.methodology-eyebrow{color:#94a3b8}.metrica-card{border-color:#334155}.metrica-titulo{color:#e2e8f0}.metrica-descripcion{color:#94a3b8}.methodology-footer{background:#0f172a;border-color:#334155}.methodology-footer p,.output-lista li{color:#94a3b8}.metrica-icon-neutral{background:#1e293b}}.op-vertical{font-family:Courier New,Courier,monospace;font-size:1.8rem;font-weight:700;display:inline-flex;flex-direction:column;align-items:flex-end;gap:2px;padding:1.2rem 1.6rem;background:#f8fafc;border-radius:14px;border:2px solid #e2e8f0;min-width:160px}.op-fila{display:flex;align-items:baseline;gap:0}.op-fila-operador{border-top:2px solid #cbd5e1;padding-top:4px}.op-celda{min-width:1.6rem;text-align:center;color:#1e293b}.op-celda-oculta{color:#94a3b8;font-style:italic}.op-celda-revelada{color:#16a34a;animation:opAparecer .25s ease}.op-signo{min-width:1.6rem;text-align:right;color:#475569;font-size:1.5rem;padding-right:4px}.op-signo-espacio{min-width:1.6rem}.op-linea{width:100%;border-top:3px solid #334155;margin:4px 0}.op-linea-doble{border-top:6px double #334155}.op-linea-mini{width:80%;border-top:1.5px solid #94a3b8;margin:2px 0 2px auto}.op-llevadas{min-height:1.4rem;align-items:flex-end}.op-llevar{min-width:1.6rem;text-align:center;font-size:.75rem;line-height:1}.op-llevar-valor{color:#dc2626;font-weight:900;animation:opAparecer .25s ease}.op-tachado{text-decoration:line-through;color:#94a3b8;font-size:.75rem}.op-resultado{color:#16a34a}.op-intermedia{transition:opacity .2s ease}.op-visible{opacity:1;animation:opAparecer .3s ease}.op-oculta{opacity:.2}.op-division-latina{font-family:Courier New,Courier,monospace;font-size:1.6rem;font-weight:700;display:inline-block;padding:1rem 1.4rem;background:#f8fafc;border-radius:14px;border:2px solid #e2e8f0}.op-div-header{display:flex;align-items:stretch;gap:0;border-bottom:3px solid #334155;padding-bottom:6px;margin-bottom:8px}.op-div-dividendo{padding-right:12px}.op-div-caja-divisor{border-left:3px solid #334155;padding-left:12px;display:flex;flex-direction:column}.op-div-divisor{color:#1e293b}.op-div-cociente{font-size:1.4rem;color:#16a34a;border-top:2px solid #334155;margin-top:4px;padding-top:2px}.op-coc-visible{animation:opAparecer .25s ease}.op-coc-oculto{opacity:0}.op-div-paso{padding-left:1rem;margin-top:4px}.op-div-parcial{color:#1e293b}.op-div-producto{display:flex;align-items:center;gap:6px}.op-div-resto{color:#64748b;font-size:1.2rem}.op-signo-resta{color:#475569}@keyframes opAparecer{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.pin-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:2000;animation:pinFadeIn .18s ease}.pin-modal{background:#fff;border-radius:20px;padding:2rem 2.4rem;width:min(340px,90vw);text-align:center;box-shadow:0 20px 60px #0000002e}.pin-icon{font-size:2rem;margin-bottom:.5rem}.pin-titulo{font-size:1.2rem;font-weight:700;color:#1e293b;margin:0 0 4px}.pin-subtitulo{font-size:.88rem;color:#64748b;margin:0 0 1.6rem}.pin-lock{background:#f59e0b1f;border:1px solid rgba(245,158,11,.25);border-radius:10px;padding:10px 14px;font-size:13px;color:#92400e;margin-bottom:1rem}.pin-inputs{display:flex;gap:12px;justify-content:center;margin-bottom:1rem}.pin-celda{width:52px;height:60px;border:2px solid #e2e8f0;border-radius:12px;font-size:1.6rem;text-align:center;outline:none;transition:border-color .15s ease;color:#1e293b}.pin-celda:focus{border-color:#7c3aed;box-shadow:0 0 0 3px #7c3aed1f}.pin-celda-error{border-color:#ef4444!important}.pin-error{font-size:.82rem;color:#ef4444;margin:0 0 1rem}.pin-cancelar{font-size:.9rem;color:#64748b;background:none;border:none;cursor:pointer;padding:.4rem 1rem;border-radius:8px;transition:background .15s ease}.pin-cancelar:hover{background:#f1f5f9}@keyframes pinFadeIn{0%{opacity:0}to{opacity:1}}@keyframes pinShake{0%,to{transform:translate(0)}20%{transform:translate(-8px)}40%{transform:translate(8px)}60%{transform:translate(-6px)}80%{transform:translate(6px)}}.pin-shake{animation:pinShake .45s ease}.nav-buttons{position:absolute;top:14px;right:14px;display:flex;align-items:center;gap:8px;z-index:100}.nav-btn{width:38px;height:38px;border-radius:50%;border:none;background:#ffffff38;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .15s ease,transform .12s ease;box-shadow:0 2px 8px #0000001f}.nav-btn:hover{background:#ffffff59}.nav-btn:active{transform:scale(.92)}.nav-btn-config:hover svg{transform:rotate(30deg);transition:transform .25s ease}.nav-btn-config svg{transition:transform .25s ease}.nav-btn-salir{background:#ef44442e}.nav-btn-salir:hover{background:#ef444459}