.upload-zone[data-astro-cid-gc5xnc4d]{border:2.5px dashed var(--primary);border-radius:var(--radius);background:var(--surface-2);padding:48px 32px;text-align:center;cursor:pointer;transition:background var(--transition),border-color var(--transition);position:relative}.upload-zone[data-astro-cid-gc5xnc4d]:hover,.upload-zone[data-astro-cid-gc5xnc4d].drag-over{background:var(--surface);border-color:var(--primary-light)}.upload-zone[data-astro-cid-gc5xnc4d] input[data-astro-cid-gc5xnc4d][type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}.upload-icon[data-astro-cid-gc5xnc4d]{font-size:3rem;margin-bottom:12px;display:block}.upload-zone[data-astro-cid-gc5xnc4d] h3[data-astro-cid-gc5xnc4d]{font-size:1.15rem;font-weight:700;color:var(--primary);margin-bottom:6px}.upload-zone[data-astro-cid-gc5xnc4d] p[data-astro-cid-gc5xnc4d]{color:var(--text-2);font-size:.9rem}.upload-zone[data-astro-cid-gc5xnc4d] .file-types[data-astro-cid-gc5xnc4d]{display:inline-flex;gap:8px;margin-top:14px;flex-wrap:wrap;justify-content:center}.file-type-badge[data-astro-cid-gc5xnc4d]{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:4px 12px;font-size:.8rem;font-weight:600;color:var(--text-2)}.preview-box[data-astro-cid-gc5xnc4d]{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;display:flex;align-items:center;gap:14px;margin-top:16px}.preview-icon[data-astro-cid-gc5xnc4d]{font-size:2rem;flex-shrink:0}.preview-info[data-astro-cid-gc5xnc4d]{flex:1;min-width:0}.preview-name[data-astro-cid-gc5xnc4d]{font-weight:600;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.preview-size[data-astro-cid-gc5xnc4d]{font-size:.82rem;color:var(--text-2)}.btn-remove[data-astro-cid-gc5xnc4d]{background:#fee2e2;color:#b91c1c;border:none;border-radius:8px;padding:6px 12px;font-size:.82rem;font-weight:600;cursor:pointer;transition:background var(--transition)}.btn-remove[data-astro-cid-gc5xnc4d]:hover{background:#fca5a5}.btn-analyze[data-astro-cid-gc5xnc4d]{display:block;width:100%;margin-top:20px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);color:#fff;border:none;border-radius:var(--radius);padding:16px 24px;font-size:1.05rem;font-weight:700;cursor:pointer;transition:opacity var(--transition),transform var(--transition);text-align:center}.btn-analyze[data-astro-cid-gc5xnc4d]:disabled{opacity:.5;cursor:not-allowed}.btn-analyze[data-astro-cid-gc5xnc4d]:not(:disabled):hover{opacity:.9;transform:translateY(-1px)}.progress-section[data-astro-cid-gc5xnc4d]{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px 28px;text-align:center}.progress-spinner[data-astro-cid-gc5xnc4d]{width:52px;height:52px;border:5px solid var(--surface-2);border-top-color:var(--primary);border-radius:50%;animation:spin .85s linear infinite;margin:0 auto 18px}@keyframes spin{to{transform:rotate(360deg)}}.progress-steps[data-astro-cid-gc5xnc4d]{list-style:none;text-align:left;max-width:340px;margin:20px auto 0}.progress-steps[data-astro-cid-gc5xnc4d] li[data-astro-cid-gc5xnc4d]{padding:7px 0;color:var(--text-2);font-size:.9rem;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border)}.progress-steps[data-astro-cid-gc5xnc4d] li[data-astro-cid-gc5xnc4d]:last-child{border:none}.progress-steps[data-astro-cid-gc5xnc4d] li[data-astro-cid-gc5xnc4d].done{color:#16a34a}.progress-steps[data-astro-cid-gc5xnc4d] li[data-astro-cid-gc5xnc4d].active{color:var(--primary);font-weight:600}.step-dot[data-astro-cid-gc5xnc4d]{width:10px;height:10px;border-radius:50%;background:currentColor;flex-shrink:0}.step-dot[data-astro-cid-gc5xnc4d].spinning{animation:spin .85s linear infinite;background:none;border:2px solid var(--primary);border-top-color:transparent;border-radius:50%;width:12px;height:12px}.results-header[data-astro-cid-gc5xnc4d]{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:24px}.results-title[data-astro-cid-gc5xnc4d]{font-size:1.35rem;font-weight:800;color:var(--text)}.results-meta[data-astro-cid-gc5xnc4d]{font-size:.88rem;color:var(--text-2)}.btn-print[data-astro-cid-gc5xnc4d],.btn-new-analysis[data-astro-cid-gc5xnc4d]{background:var(--surface-2);border:1px solid var(--border);color:var(--text-2);border-radius:8px;padding:8px 16px;font-size:.88rem;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:background var(--transition)}.btn-print[data-astro-cid-gc5xnc4d]:hover,.btn-new-analysis[data-astro-cid-gc5xnc4d]:hover{background:var(--surface)}.btn-new-analysis[data-astro-cid-gc5xnc4d]{color:var(--primary);background:color-mix(in srgb,var(--primary) 10%,transparent)}.exercise-card[data-astro-cid-gc5xnc4d]{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:20px;overflow:hidden;box-shadow:var(--shadow);transition:box-shadow var(--transition)}.exercise-card[data-astro-cid-gc5xnc4d]:hover{box-shadow:var(--shadow-md)}.exercise-header[data-astro-cid-gc5xnc4d]{display:flex;align-items:center;gap:12px;padding:16px 20px;cursor:pointer;border-bottom:1px solid transparent;transition:border-color var(--transition),background var(--transition);user-select:none}.exercise-card[data-astro-cid-gc5xnc4d].open .exercise-header[data-astro-cid-gc5xnc4d]{border-bottom-color:var(--border);background:var(--surface-2)}.exercise-num[data-astro-cid-gc5xnc4d]{background:var(--primary);color:#fff;border-radius:8px;padding:4px 10px;font-size:.8rem;font-weight:700;flex-shrink:0}.exercise-title[data-astro-cid-gc5xnc4d]{font-weight:700;font-size:1rem;color:var(--text);flex:1}.exercise-diff[data-astro-cid-gc5xnc4d]{border-radius:20px;padding:3px 10px;font-size:.78rem;font-weight:600;flex-shrink:0}.diff-usor[data-astro-cid-gc5xnc4d]{background:#dcfce7;color:#16a34a}.diff-mediu[data-astro-cid-gc5xnc4d]{background:#fff7ed;color:#ea580c}.diff-dificil[data-astro-cid-gc5xnc4d]{background:#fee2e2;color:#b91c1c}.exercise-chevron[data-astro-cid-gc5xnc4d]{color:var(--text-2);transition:transform var(--transition);flex-shrink:0}.exercise-card[data-astro-cid-gc5xnc4d].open .exercise-chevron[data-astro-cid-gc5xnc4d]{transform:rotate(180deg)}.exercise-body[data-astro-cid-gc5xnc4d]{padding:20px;display:none}.exercise-card[data-astro-cid-gc5xnc4d].open .exercise-body[data-astro-cid-gc5xnc4d]{display:block}.ex-section[data-astro-cid-gc5xnc4d]{margin-bottom:18px}.ex-section[data-astro-cid-gc5xnc4d]:last-child{margin-bottom:0}.ex-section-title[data-astro-cid-gc5xnc4d]{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--text-2);margin-bottom:8px}.ex-section-content[data-astro-cid-gc5xnc4d]{font-size:.95rem;color:var(--text);line-height:1.7}.ex-section-content[data-astro-cid-gc5xnc4d] pre[data-astro-cid-gc5xnc4d]{background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:12px 14px;font-family:var(--mono);font-size:.88rem;overflow-x:auto;margin-top:8px}.chapter-link[data-astro-cid-gc5xnc4d]{display:inline-flex;align-items:center;gap:8px;background:color-mix(in srgb,var(--primary) 10%,transparent);border:1px solid color-mix(in srgb,var(--primary) 25%,transparent);color:var(--primary);border-radius:8px;padding:8px 14px;font-size:.88rem;font-weight:600;text-decoration:none;margin-top:4px;transition:background var(--transition)}.chapter-link[data-astro-cid-gc5xnc4d]:hover{background:color-mix(in srgb,var(--primary) 20%,transparent)}.error-banner[data-astro-cid-gc5xnc4d]{background:#fee2e2;border:1px solid #fca5a5;border-radius:var(--radius);padding:16px 20px;color:#b91c1c;font-size:.92rem;display:flex;gap:10px;align-items:flex-start}.info-box[data-astro-cid-gc5xnc4d]{background:#fefce8;border:1px solid #fde68a;border-radius:var(--radius);padding:14px 18px;font-size:.88rem;color:#92400e;display:flex;gap:10px;align-items:flex-start;margin-bottom:20px}[data-astro-cid-gc5xnc4d][data-theme=dark] .info-box[data-astro-cid-gc5xnc4d]{background:#1c1a08;border-color:#78610a;color:#fde68a}[data-astro-cid-gc5xnc4d][data-theme=dark] .diff-usor[data-astro-cid-gc5xnc4d]{background:#14532d33;color:#4ade80}[data-astro-cid-gc5xnc4d][data-theme=dark] .diff-mediu[data-astro-cid-gc5xnc4d]{background:#7c2d1233;color:#fb923c}[data-astro-cid-gc5xnc4d][data-theme=dark] .diff-dificil[data-astro-cid-gc5xnc4d],[data-astro-cid-gc5xnc4d][data-theme=dark] .btn-remove[data-astro-cid-gc5xnc4d]{background:#7f1d1d33;color:#f87171}[data-astro-cid-gc5xnc4d][data-theme=dark] .error-banner[data-astro-cid-gc5xnc4d]{background:#7f1d1d33;border-color:#ef444466;color:#fca5a5}.how-steps[data-astro-cid-gc5xnc4d]{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-top:8px}.how-step[data-astro-cid-gc5xnc4d]{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 16px;text-align:center}.how-step-icon[data-astro-cid-gc5xnc4d]{font-size:1.8rem;margin-bottom:8px}.how-step-title[data-astro-cid-gc5xnc4d]{font-weight:700;font-size:.9rem;color:var(--text);margin-bottom:4px}.how-step-desc[data-astro-cid-gc5xnc4d]{font-size:.82rem;color:var(--text-2)}@media print{.site-header[data-astro-cid-gc5xnc4d],.chapter-hero[data-astro-cid-gc5xnc4d],#go-top-btn[data-astro-cid-gc5xnc4d],.chapter-footer-nav[data-astro-cid-gc5xnc4d],.btn-print[data-astro-cid-gc5xnc4d],.btn-new-analysis[data-astro-cid-gc5xnc4d],.upload-section[data-astro-cid-gc5xnc4d],#scroll-progress[data-astro-cid-gc5xnc4d]{display:none!important}.exercise-body[data-astro-cid-gc5xnc4d]{display:block!important}.exercise-card[data-astro-cid-gc5xnc4d]{box-shadow:none;border:1px solid #ccc;page-break-inside:avoid}}