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24px;font-size:.9rem;font-weight:600}.btn-save-ex:hover{background:#1d4ed8}.btn-save-ex:disabled{cursor:default;background:#d1d5db}.btn-edit-block{cursor:pointer;color:#ccc;background:0 0;border:none;flex-shrink:0;margin-left:auto;padding:0 4px;font-size:.85em}.btn-edit-block:hover{color:#555}.btn-delete-block{cursor:pointer;color:#ccc;background:0 0;border:none;flex-shrink:0;padding:0 4px;font-size:.8em}.btn-delete-block:hover{color:#dc2626}.block-edit-area{flex-direction:column;flex:1;gap:6px;display:flex}.block-textarea{resize:vertical;border:1px solid #3b82f6;border-radius:4px;width:100%;min-height:60px;padding:6px 8px;font-family:inherit;font-size:.9em;line-height:1.5}.block-edit-actions{gap:8px;display:flex}.btn-confirm-edit{color:#fff;cursor:pointer;background:#2563eb;border:none;border-radius:4px;padding:4px 12px;font-size:.8em}.btn-confirm-edit:hover{background:#1d4ed8}.btn-cancel-edit{color:#555;cursor:pointer;background:#f0f0f0;border:1px solid #ccc;border-radius:4px;padding:4px 12px;font-size:.8em}.btn-cancel-edit:hover{background:#e0e0e0}.btn-add-block{color:#888;cursor:pointer;text-align:left;background:0 0;border:1px dashed #ccc;border-radius:4px;width:100%;margin-top:4px;padding:4px 10px;font-size:.8em}.btn-add-block:hover{color:#555;border-color:#888}.add-block-form{background:#f9f9f9;border:1px solid #e0e0e0;border-radius:6px;flex-direction:column;gap:6px;margin-top:4px;padding:8px;display:flex}.add-block-type{border:1px solid #ccc;border-radius:4px;width:fit-content;padding:4px 6px;font-size:.85em}.add-block-textarea{resize:vertical;border:1px solid #ccc;border-radius:4px;width:100%;min-height:48px;padding:6px 8px;font-family:inherit;font-size:.9em}.add-block-actions{gap:8px;display:flex}.btn-confirm-add{color:#fff;cursor:pointer;background:#2563eb;border:none;border-radius:4px;padding:4px 12px;font-size:.8em}.btn-confirm-add:hover{background:#1d4ed8}.btn-cancel-add{color:#555;cursor:pointer;background:#f0f0f0;border:1px solid #ccc;border-radius:4px;padding:4px 12px;font-size:.8em}.btn-cancel-add:hover{background:#e0e0e0}.modal-overlay{z-index:1100;background:#0006;justify-content:center;align-items:center;display:none;position:fixed;inset:0}.modal-overlay.visible{display:flex}.modal--wide{background:#fff;border-radius:8px;flex-direction:column;width:95%;max-width:760px;max-height:90vh;display:flex;overflow:hidden;box-shadow:0 8px 32px #00000040}.modal--wide .modal-header{border-bottom:1px solid #e5e7eb;flex-shrink:0;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.modal--wide .modal-header h3{color:#111;margin:0;font-size:.95rem;font-weight:600}.modal--wide .modal-close{cursor:pointer;color:#6b7280;background:0 0;border:none;padding:2px 6px;font-size:1.4rem;line-height:1}.modal--wide .modal-close:hover{color:#111}.modal--wide .modal-body{flex:1;padding:16px;overflow-y:auto}.btn-open-block-editor{color:#374151;cursor:pointer;background:#fff;border:1px solid #d1d5db;border-radius:6px;align-self:flex-start;margin-top:8px;padding:6px 12px;font-family:inherit;font-size:.82rem}.btn-open-block-editor:hover{background:#f3f4f6;border-color:#9ca3af}.dup-warning{color:#78350f;background:#fef3c7;border:1px solid #f59e0b;border-radius:6px;align-items:center;gap:8px;padding:10px 14px;font-size:.88rem;line-height:1.4;display:flex}.dup-warning-icon{flex-shrink:0;font-size:1.1rem}.dup-warning-text{flex:1}.dup-warning-more{color:#92400e;margin-left:4px;font-size:.82rem}.dup-warning-link{cursor:pointer;color:#b45309;font-size:inherit;background:0 0;border:none;padding:0;font-family:inherit;font-weight:600;text-decoration:underline}.dup-warning-link:hover{color:#78350f}.btn-substitute{background:#b45309}.btn-substitute:hover{background:#92400e}.btn-save-anyway{background:#6b7280}.btn-save-anyway:hover{background:#4b5563}.dup-preview-meta{color:#374151;background:#f9fafb;border:1px solid #e5e7eb;border-radius:6px;flex-wrap:wrap;gap:8px 16px;margin-bottom:12px;padding:8px 12px;font-size:.85rem;display:flex}.dup-preview-blocks{flex-direction:column;gap:8px;display:flex}.banco-app{max-width:1100px;padding:var(--spacing-xl) var(--spacing-xl) var(--spacing-3xl);margin:0 auto}.confirmation-mode{display:none}.confirmation-mode.active{display:block}.confirmation-header{text-align:center;padding:48px var(--spacing-xl)}.confirmation-icon{margin-bottom:var(--spacing-lg);color:#16a34a;font-size:48px}.confirmation-title{font-family:var(--font-display);color:#16a34a;margin-bottom:var(--spacing-sm);font-size:1.4rem;font-weight:600}.confirmation-list{max-width:600px;margin:var(--spacing-2xl) auto;gap:var(--spacing-md);flex-direction:column;display:flex}.confirmation-actions{gap:var(--spacing-lg);margin-top:var(--spacing-2xl);flex-wrap:wrap;justify-content:center;display:flex}.bank-mode{display:none}.bank-mode.active{display:block}.banco-action-bar{background:var(--color-white);border-top:1px solid var(--color-border);padding:var(--spacing-md) var(--spacing-xl);z-index:50;justify-content:flex-end;display:flex;position:sticky;bottom:0}.confirmation-mode.active~.banco-action-bar{display:none}.dup-badge{color:#92400e;font:inherit;cursor:pointer;white-space:nowrap;z-index:2;background:#fff7df;border:1px solid #f5d08a;border-radius:999px;align-items:center;gap:4px;padding:4px 10px;font-size:12px;line-height:1.4;display:inline-flex;position:relative}.dup-badge:hover{background:#fef3c7;border-color:#d97706}.dup-focused-list{gap:var(--spacing-lg);flex-direction:column;display:flex}.dup-focused-exercise{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-white);overflow:hidden}.dup-focused-header{justify-content:space-between;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--color-bg-primary);display:flex}.dup-focused-title{min-width:0;color:var(--color-text-primary);font-weight:600}.dup-focused-meta{margin-top:var(--spacing-xs);color:var(--color-text-secondary);font-size:12px}.dup-focused-delete{flex-shrink:0}.dup-focused-content{padding:var(--spacing-lg);border-top:1px solid var(--color-border);line-height:1.5}.search-bar{margin-bottom:var(--spacing-lg);align-items:center;gap:var(--spacing-sm);display:flex;position:relative}.search-bar 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var(--spacing-md);background:var(--color-bg-primary);border:1px solid var(--color-border);color:var(--color-text-secondary);cursor:pointer;white-space:nowrap;border-radius:999px;align-items:center;gap:4px;font-size:13px;transition:all .15s;display:inline-flex}.tag-chip:hover{background:var(--color-border)}.tag-chip.selected{background:var(--color-blue-primary);border-color:var(--color-blue-primary);color:#fff}.clear-filters-btn{padding:4px var(--spacing-md);border:1px solid var(--color-border);color:var(--color-text-secondary);cursor:pointer;font-size:12px;font-family:var(--font-body);background:0 0;border-radius:999px;display:none}.clear-filters-btn.visible{display:inline-block}.clear-filters-btn:hover{background:var(--color-bg-primary)}.exercise-card{background:var(--color-white);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:box-shadow .2s;overflow:hidden}.exercise-card:hover{box-shadow:0 4px 16px #1a4fbf14}.exercise-card--child{margin-left:24px}.card-header{padding:var(--spacing-lg);justify-content:space-between;align-items:flex-start;gap:var(--spacing-md);display:flex}.card-title{color:var(--color-text-primary);font-weight:600}.card-title.empty{color:var(--color-text-secondary);font-style:italic}.subject-badge{padding:4px var(--spacing-sm);background:var(--color-bg-primary);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-text-secondary);white-space:nowrap;flex-shrink:0;font-size:12px}.card-meta{align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);border-top:1px solid var(--color-bg-primary);font-size:13px;display:flex}.difficulty-display{color:#f59e0b;letter-spacing:1px}.image-count{color:var(--color-text-secondary)}.card-tags{flex-wrap:wrap;flex:1;gap:6px;display:flex}.card-actions{gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-lg);border-top:1px solid 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.15s}.pagination-btn:hover:not(:disabled){background:var(--color-bg-primary);border-color:var(--color-text-secondary)}.pagination-btn:disabled{opacity:.4;cursor:not-allowed}.pagination-info strong{color:var(--color-text-primary)}.loading-state{color:var(--color-text-secondary);justify-content:center;align-items:center;gap:var(--spacing-lg);flex-direction:column;padding:64px;display:flex}.spinner{border:3px solid var(--color-border);border-top-color:var(--color-blue-primary);border-radius:50%;width:28px;height:28px;animation:.8s linear infinite banco-spin}@keyframes banco-spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:64px var(--spacing-xl)}.empty-state-title{font-family:var(--font-display);color:var(--color-text-secondary);margin-bottom:var(--spacing-sm);font-size:1.2rem;font-weight:600}.btn-danger{color:#fff;background:#dc2626;border:none}.btn-sm{padding:6px var(--spacing-md)!important;font-size:13px!important}.modal-overlay{z-index:300;opacity:0;visibility:hidden;background:#0006;justify-content:center;align-items:center;transition:opacity .2s,visibility .2s;display:flex;position:fixed;inset:0}.modal{background:var(--color-white);border-radius:var(--radius-lg);width:90%;max-width:500px;max-height:90vh;transition:transform .2s;overflow-y:auto;transform:scale(.95);box-shadow:0 20px 60px #0003}.modal-header{padding:var(--spacing-xl);border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;display:flex}.modal-header h2{color:var(--color-text-primary);margin:0;font-size:1rem;font-weight:600}.modal-close{color:var(--color-text-secondary);cursor:pointer;background:0 0;border:none;padding:4px;font-size:1.5rem;line-height:1}.modal-body{padding:var(--spacing-xl)}.modal-footer{justify-content:flex-end;gap:var(--spacing-md);padding:var(--spacing-lg) var(--spacing-xl);border-top:1px solid var(--color-border);background:var(--color-bg-primary);display:flex}.star-selector{gap:4px;display:flex}.star-selector .star{color:var(--color-border);cursor:pointer;font-size:1.5rem;transition:color .15s}.star-selector .star.active{color:#f59e0b}.star-selector .star:hover{color:#fbbf24}.tag-input-area{gap:var(--spacing-sm);padding:var(--spacing-sm);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-white);flex-wrap:wrap;align-items:center;min-height:44px;display:flex}.tag-input-area:focus-within{border-color:var(--color-blue-primary);box-shadow:0 0 0 3px #1a4fbf1a}.tag-chip.editable{background:var(--color-blue-primary);border-color:var(--color-blue-primary);color:#fff;border-radius:999px}.tag-chip.editable .remove-tag{color:#fff;cursor:pointer;opacity:.7;background:0 0;border:none;padding:0;font-size:1rem;line-height:1}.tag-chip.editable 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toast-in{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}.page-title{font-family:var(--font-display);color:var(--color-text-primary);margin:0 0 var(--spacing-lg) 0;font-size:1.5rem;font-weight:600}.exercise-count-summary{color:var(--color-text-secondary);margin-bottom:var(--spacing-md);font-size:14px;font-weight:500}.badge--label{color:#3730a3;letter-spacing:.02em;background:#e0e7ff;border-radius:999px;flex-shrink:0;align-items:center;margin-left:6px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-flex}.formula-count{color:#92400e;background:#fef3c7;border-radius:999px;padding:2px 6px;font-size:13px;font-weight:600}.card-title-row{flex:1;align-items:center;gap:6px;min-width:0;display:flex}.exercise-solution{margin-top:var(--spacing-lg);padding:var(--spacing-md);border-radius:var(--radius-sm);color:#065f46;white-space:pre-wrap;background:#ecfdf5;border-left:3px solid #16a34a;font-size:14px;line-height:1.6}.exercise-solution strong{color:#047857;text-transform:uppercase;letter-spacing:.04em;margin-bottom:4px;font-size:13px;display:block}.block-formula{padding:var(--spacing-sm) 0}.skeleton-line{background:linear-gradient(90deg,#e5e7eb 25%,#f3f4f6 50%,#e5e7eb 75%) 0 0/200% 100%;border-radius:4px;height:14px;margin-bottom:10px;animation:1.4s infinite skeleton-sweep}.skeleton-line.wide{width:80%}.skeleton-line.medium{width:55%}.skeleton-line.narrow{width:35%}@keyframes skeleton-sweep{0%{background-position:200% 0}to{background-position:-200% 0}}@media (prefers-color-scheme:dark){.skeleton-line{background:linear-gradient(90deg,#374151 25%,#4b5563 50%,#374151 75%) 0 0/200% 100%}}.modal.modal--wide{width:95%;max-width:760px;max-height:90vh;overflow-y:auto}.exercise-editor{margin-bottom:var(--spacing-lg,16px);flex-direction:column;gap:12px;display:flex}.ee-meta-fieldset,.ee-blocks-fieldset{border:1px solid var(--color-border,#e0e0e0);border-radius:var(--radius-md,8px);background:var(--color-bg-primary,#f9fafb);margin:0;padding:12px 14px}.ee-meta-fieldset legend,.ee-blocks-fieldset legend{text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-secondary,#6b7280);padding:0 6px;font-size:12px;font-weight:600}.ee-meta-grid{grid-template-columns:1fr 1fr;gap:10px 12px;display:grid}@media (width<=600px){.ee-meta-grid{grid-template-columns:1fr}}.ee-field{flex-direction:column;gap:4px;display:flex}.ee-field>span{color:var(--color-text-secondary,#6b7280);font-size:12px;font-weight:600}.ee-input{border:1px solid var(--color-border,#ccc);border-radius:var(--radius-sm,4px);background:#fff;padding:6px 10px;font-family:inherit;font-size:14px}.ee-input:focus{border-color:var(--color-blue-primary,#1a4fbf);outline:none;box-shadow:0 0 0 3px #1a4fbf1a}.ee-blocks-hint{color:var(--color-text-secondary,#6b7280);margin:0 0 10px;font-size:12px;line-height:1.5}.ee-blocks-list{flex-direction:column;gap:8px;display:flex}.ee-empty-hint{color:var(--color-text-secondary,#6b7280);text-align:center;border:1px dashed var(--color-border,#ccc);border-radius:var(--radius-sm,4px);background:#fff;margin:0;padding:14px;font-size:13px;font-style:italic}.ee-block{border:1px solid var(--color-border,#e0e0e0);border-radius:var(--radius-sm,4px);background:#fff;flex-direction:column;gap:6px;padding:8px 10px;display:flex}.ee-block-row{align-items:flex-start;gap:8px;display:flex}.ee-block-row .block-badge{cursor:pointer;flex-shrink:0}.ee-block-row .block-badge:hover{filter:brightness(.92)}.badge--ejercicio{color:#5b21b6;background:#ede9fe}.badge--apartado{color:#9d174d;background:#fce7f3}.badge--puntos{color:#92400e;background:#fef3c7}.ee-block-content-wrap{flex:1;min-width:0}.ee-block-content-wrap .block-content{color:#333;white-space:pre-wrap;word-break:break-word;font-size:.92em;line-height:1.5}.ee-block-content-wrap 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.exam-header h1{margin-bottom:6pt;font-size:15pt;font-weight:700}.hdr-preview-output .exam-meta{color:#444;flex-wrap:wrap;gap:24pt;font-size:9pt;display:flex}.hdr-preview-output .exam-meta-item{flex-direction:column;gap:2pt;display:flex}.hdr-preview-output .exam-meta-label{text-transform:uppercase;letter-spacing:.05em;color:#666;font-size:7.5pt;font-weight:600}.hdr-preview-output .student-field{border-top:1pt solid #ccc;flex-wrap:wrap;gap:24pt;margin-top:10pt;padding-top:8pt;font-size:9pt;display:flex}.hdr-preview-output .exam-blank-field{flex:1;align-items:center;gap:8pt;min-width:160pt;display:flex}.hdr-preview-output .student-name-line{align-items:flex-end;gap:8pt;margin-top:4pt;display:flex}.hdr-preview-output .student-name-underline{border-bottom:1pt solid #555;flex:1;height:18pt}#instructions-modal .modal{min-height:250px}.dimset-item-list{flex-wrap:wrap;gap:8px;margin:8px 0;padding:0;list-style:none;display:flex}.dimset-item-list 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var(--color-border);border-radius:var(--radius-md);aspect-ratio:16/9;width:100%;max-width:700px;color:var(--color-text-secondary);justify-content:center;align-items:center;margin:0 auto;display:flex}.section{padding:var(--spacing-6xl) 0;border-top:1px solid var(--color-border)}.section:first-child{border-top:none}.section-center{text-align:center}.section-center h2{max-width:700px;margin-left:auto;margin-right:auto}.grid{gap:var(--spacing-2xl);display:grid}.grid-2{gap:var(--spacing-2xl);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));display:grid}.gap-sm{gap:var(--spacing-sm)!important}.gap-md{gap:var(--spacing-md)!important}.gap-lg{gap:var(--spacing-lg)!important}.gap-xl{gap:var(--spacing-2xl)!important}.grid-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}@media (width<=768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.feature-card{text-align:center}.feature-card .feature-link{color:inherit;cursor:pointer;padding:0;text-decoration:none;display:block}.feature-card .feature-link:hover h3{color:var(--color-blue-primary)}.feature-card h3{margin-bottom:var(--spacing-md)}.feature-card p{color:var(--color-text-secondary);margin-bottom:0}.steps-inline{gap:var(--spacing-md);margin-top:var(--spacing-lg);text-align:left;flex-direction:column;display:flex}.step-inline{align-items:flex-start;gap:var(--spacing-sm);color:var(--color-text-secondary);font-size:14px;line-height:1.5;display:flex}.step-badge{background:var(--color-blue-primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:22px;min-width:22px;height:22px;margin-top:2px;font-size:12px;font-weight:600;display:inline-flex}.step-inline strong{color:var(--color-text)}.cta-section{background:var(--color-blue-dark);color:var(--color-white);padding:var(--spacing-6xl) 0;text-align:center}.cta-section h2{color:var(--color-white);margin-bottom:var(--spacing-lg)}.cta-section p{color:#ffffffe6;max-width:600px;margin-left:auto;margin-right:auto;margin-bottom:var(--spacing-3xl)}.cta-section .btn-primary{background:var(--color-white);color:var(--color-blue-dark)}.cta-section .btn-primary:hover{background:var(--color-bg-primary)}footer{background:var(--color-white);border-top:1px solid var(--color-border);padding:var(--spacing-3xl) 0;font-size:14px}.footer-content{gap:var(--spacing-2xl);margin-bottom:var(--spacing-3xl);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));display:grid}.footer-section h4{margin-bottom:var(--spacing-md);color:var(--color-text-primary);font-size:14px;font-weight:600}.footer-section ul{margin:0;padding:0;list-style:none}.footer-section a{color:var(--color-text-secondary);transition:color var(--transition-quick);text-decoration:none}.footer-section a:hover{color:var(--color-blue-primary)}.footer-bottom{border-top:1px solid var(--color-border);padding-top:var(--spacing-2xl);text-align:center;color:var(--color-text-secondary)}.testimonial{background:var(--color-bg-primary);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-2xl);text-align:center}.testimonial p{color:var(--color-text-primary);margin-bottom:var(--spacing-lg);font-style:italic}.block-card,.file-card,.summary-card,.download-panel{background:#fffffff2;border-radius:18px;padding:1.5rem;box-shadow:0 20px 45px #0f172a14}.download-panel .button-row{margin-top:1rem}.file-card{color:#102a43;gap:.35rem;display:grid}.field-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;display:grid}.status-message{color:#102a43;min-height:1.5rem;margin:.75rem 0}.status-message.error{color:#ba1a1a}.status-message.success{color:#166534}.status-message.warning{color:#7a3b00;background:#fff3cd;border:1px solid #ffc107;border-radius:6px;margin-bottom:1rem;padding:.75rem 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var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-3xl);gap:var(--spacing-sm);display:grid}.file-selected-label{color:var(--color-blue-primary);font-size:.9rem;font-weight:700}.app-header{background:var(--color-white);border-bottom:1px solid var(--color-border);z-index:100;padding:var(--spacing-md) var(--spacing-xl);align-items:center;gap:var(--spacing-lg);grid-template-columns:1fr auto 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