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768px){.resolver-grid{grid-template-columns:1fr;height:auto}}.resolver-izquierda{display:flex;flex-direction:column;gap:16px;overflow-y:auto}.resolver-derecha{height:100%;min-height:500px}.btn-volver{background:none;color:var(--azul);font-weight:600;font-size:.95rem;padding:0;align-self:flex-start}.btn-volver:hover{color:var(--azul-oscuro)}.problema-tarjeta{padding:24px}.problema-meta{display:flex;gap:8px;margin-bottom:12px}.problema-titulo{font-size:1.1rem;font-weight:700;color:#073b4c;margin-bottom:12px}.problema-texto{font-size:1.1rem;line-height:1.7;color:#2d3748}.respuesta-box{display:flex;flex-direction:column;gap:12px}.respuesta-label{font-weight:700;color:#4a5568}.respuesta-textarea{resize:vertical}.respuesta-hint{font-size:.85rem;color:var(--gris-medio);background:#f0f4f8;padding:8px 12px;border-radius:10px;margin:-4px 0 4px}.respuesta-enviada{text-align:center;display:flex;flex-direction:column;gap:10px;align-items:center}.respuesta-enviada.correcta{border-left:4px solid var(--verde)}.respuesta-enviada.revisar{border-left:4px solid var(--amarillo)}.resultado-icono{font-size:2.5rem}.resultado-titulo{font-size:1.2rem;font-weight:800;color:#073b4c}.resultado-sub{font-size:.88rem;color:var(--gris-medio)}.respuesta-texto{color:var(--gris-medio);font-style:italic;font-size:.9rem}.resolver-cargando,.resolver-error{display:flex;align-items:center;justify-content:center;height:calc(100vh - 100px);gap:12px;font-size:1.1rem}.opciones-grid{display:flex;flex-direction:column;gap:10px}.opcion-btn{display:flex;align-items:center;gap:14px;padding:14px 16px;border:2px solid #E2E8F0;border-radius:12px;background:#fff;cursor:pointer;text-align:left;transition:all .2s ease;font-size:1rem;color:#2d3748}.opcion-btn:hover:not(:disabled){border-color:var(--azul);background:#ebf4ff;transform:translate(4px)}.opcion-btn.opcion-seleccionada{border-color:var(--azul);background:#ebf4ff;box-shadow:0 0 0 3px #4299e133}.opcion-letra{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:var(--azul);color:#fff;font-weight:700;font-size:.9rem;flex-shrink:0}.opcion-btn.opcion-seleccionada .opcion-letra{background:var(--verde)}.opcion-texto{flex:1;line-height:1.4}.badge-gris{background:#edf2f7;color:#4a5568;font-size:.7rem;max-width:200px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.diagrama-container{margin-top:12px}.btn-diagrama{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:8px 16px;border-radius:20px;font-size:.85rem;font-weight:600}.diagrama-ascii{margin-top:10px;padding:16px;background:#1a1a2e;color:#00d4aa;font-family:Courier New,monospace;font-size:.82rem;line-height:1.5;border-radius:10px;overflow-x:auto;white-space:pre}.solucion-box{width:100%;text-align:left;background:#f0fff4;border:1px solid #C6F6D5;border-radius:10px;padding:12px 16px}.solucion-box summary{cursor:pointer;font-weight:600;color:#276749}.solucion-texto,.solucion-math{margin-top:10px;font-size:.95rem;line-height:1.7;color:#2d3748}.problema-enunciado-math{font-size:1.1rem;line-height:1.8;color:#2d3748}.eval-layout{min-height:100vh;background:var(--fondo)}.eval-main{max-width:800px;margin:0 auto;padding:24px 20px 80px}.eval-header{margin-bottom:24px;border-left:4px solid var(--naranja)}.eval-header h2{font-size:1.3rem;font-weight:800;color:#073b4c}.eval-header p{color:var(--gris-medio);margin-top:4px}.preguntas-lista{display:flex;flex-direction:column;gap:16px}.pregunta-header{display:flex;align-items:center;gap:10px;margin-bottom:10px}.pregunta-num{font-weight:800;font-size:1.1rem;color:var(--naranja);min-width:28px}.pregunta-texto{font-size:1rem;line-height:1.6;margin-bottom:12px}.pregunta-input{resize:vertical}.eval-footer{position:fixed;bottom:0;left:0;right:0;background:#fff;padding:16px 24px;box-shadow:0 -4px 20px #0000001a;display:flex;align-items:center;justify-content:space-between;gap:16px}.eval-progreso{font-weight:600;color:var(--gris-medio)}.eval-cargando{display:flex;align-items:center;justify-content:center;height:calc(100vh - 80px);gap:12px;font-size:1.1rem}.resultado{text-align:center;padding:48px;display:flex;flex-direction:column;align-items:center;gap:16px;margin-top:20px}.resultado-emoji{font-size:4rem}.resultado h3{font-size:1.6rem;font-weight:800}.resultado-puntaje{font-size:2.5rem;font-weight:900;color:#073b4c}.resultado-nivel{font-size:1.2rem;font-weight:700}.panel-layout{min-height:100vh;background:var(--fondo)}.panel-main{max-width:860px;margin:0 auto;padding:24px 20px 90px;display:flex;flex-direction:column;gap:16px}.panel-header{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-left:4px solid var(--azul)}.panel-header h2{font-size:1.3rem;font-weight:800;color:#073b4c}.panel-header p{color:var(--gris-medio);margin-top:4px}.sesion-selector label{font-weight:600;display:block;margin-bottom:8px}.sesion-input-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.dimension-titulo{font-size:1rem;font-weight:700;color:#073b4c;margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid #E2E8F0}.items-lista{display:flex;flex-direction:column;gap:10px}.item-obs{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:10px;cursor:pointer;transition:background .15s;border:2px solid transparent}.item-obs input[type=checkbox]{display:none}.item-si{background:#f0fff8;border-color:#06d6a0}.item-no{background:#f7fafc;border-color:#e2e8f0}.item-no:hover{background:#edf2f7}.item-check{font-size:1.2rem;flex-shrink:0}.item-texto{font-size:.95rem;color:#2d3748}.panel-footer{position:fixed;bottom:0;left:0;right:0;background:#fff;padding:16px 24px;box-shadow:0 -4px 20px #0000001a;display:flex;align-items:center;justify-content:space-between;gap:16px}.obs-contador{font-weight:600;color:var(--gris-medio)}.reportes-layout{min-height:100vh;background:var(--fondo)}.reportes-main{max-width:1100px;margin:0 auto;padding:24px 20px;display:flex;flex-direction:column;gap:20px}.reportes-header{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-left:4px solid var(--verde)}.reportes-header h2{font-size:1.3rem;font-weight:800;color:#073b4c}.reportes-header p{color:var(--gris-medio);margin-top:4px}.reportes-acciones{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.tabla-wrapper{overflow-x:auto;padding:0}.tabla-progreso{width:100%;border-collapse:collapse;font-size:.9rem}.tabla-progreso th{background:#073b4c;color:#fff;padding:12px 14px;text-align:left;white-space:nowrap}.tabla-progreso td{padding:10px 14px;border-bottom:1px solid #E2E8F0}.tabla-progreso tr:hover td{background:#f7fafc}.celda-num{text-align:center;font-weight:600}.mejora{color:#38a169;background:#f0fff8}.vacio{text-align:center;padding:48px;color:var(--gris-medio)}.vacio p:first-child{font-size:1.2rem;font-weight:700;margin-bottom:8px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--naranja: #FF6B35;--amarillo: #FFD166;--verde: #06D6A0;--azul: #118AB2;--azul-oscuro: #073B4C;--fondo: #FFF8F0;--blanco: #FFFFFF;--gris-claro: #F0F4F8;--gris-medio: #8E9BAB;--texto: #2D3748;--radio: 16px;--sombra: 0 4px 20px rgba(0,0,0,.08)}body{font-family:Segoe UI,system-ui,sans-serif;background:var(--fondo);color:var(--texto);font-size:16px;line-height:1.6}button{cursor:pointer;border:none;font-family:inherit;font-size:1rem;transition:all .2s ease}input,textarea,select{font-family:inherit;font-size:1rem}a{text-decoration:none;color:inherit}.btn-primario{background:var(--naranja);color:#fff;padding:12px 28px;border-radius:50px;font-weight:700;font-size:1.05rem;box-shadow:0 4px 15px #ff6b354d}.btn-primario:hover{background:#e55a28;transform:translateY(-2px)}.btn-primario:disabled{background:#ccc;transform:none;box-shadow:none;cursor:not-allowed}.btn-secundario{background:var(--gris-claro);color:var(--texto);padding:10px 24px;border-radius:50px;font-weight:600}.btn-secundario:hover{background:#dde3ea}.tarjeta{background:var(--blanco);border-radius:var(--radio);box-shadow:var(--sombra);padding:24px}.badge{display:inline-block;padding:4px 14px;border-radius:50px;font-size:.8rem;font-weight:700}.badge-verde{background:#d4f7ee;color:#06a07a}.badge-amarillo{background:#fff3cc;color:#b38600}.badge-naranja{background:#ffe4d9;color:#c94e1a}.badge-azul{background:#d6eef8;color:#0a6b92}.badge-morado{background:#e9d8fd;color:#6b46c1}.input-field{width:100%;padding:12px 16px;border:2px solid #E2E8F0;border-radius:12px;font-size:1rem;transition:border-color .2s;background:#fff}.input-field:focus{outline:none;border-color:var(--naranja)}.error-msg{color:#e53e3e;font-size:.9rem;margin-top:6px}.cargando{display:flex;align-items:center;gap:10px;color:var(--gris-medio);font-style:italic}.spinner{width:20px;height:20px;border:3px solid #E2E8F0;border-top-color:var(--naranja);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}