:root{--bg-main:#1a1c23;--bg-panel:#1e202899;--text-primary:#f8fafc;--text-secondary:#94a3b8;--accent-primary:#e0b0ff;--accent-lavender:#a78bfa;--accent-purple:#8b5cf64d;--accent-glow:#e0b0ff66;--color-conceive:#b4e3b4;--color-avoid:#fadadd;--color-avoid-caution:#fbbf24;--color-avoid-high-risk:#f43f5e;--color-fertile-soft:#e0b0ff1a;--color-period-soft:#fadadd1a;--border-glass:#ffffff14;--card-bg:#2d303c66}.tta-mode .cal-day.fertile-day{background:#fbbf241a!important}.tta-mode .cal-day.ovulation-day{background:#f43f5e33!important;border-color:#f43f5e66!important}.tta-mode .legend-dot.shade-fertile{background:var(--color-avoid-caution)!important}.tta-mode .legend-dot.shade-ovulation{background:var(--color-avoid-high-risk)!important}*{box-sizing:border-box}.light-mode{--bg-main:#f8fafc;--bg-panel:#0f172a66;--text-primary:#f8fafc;--accent-red:#f43f5e;--text-secondary:#94a3b8;--text-muted:#64748b;--bg-darker:#020617;--border-glass:#ffffff1a}body{background-color:var(--bg-main);color:var(--text-primary);background-image:linear-gradient(#00f3ff08 1px,#0000 1px),linear-gradient(90deg,#00f3ff08 1px,#0000 1px);background-size:50px 50px;margin:0;padding:0;font-family:Inter,sans-serif;transition:background-color .3s,color .3s}.theme-toggle-btn{border:1px solid var(--border-glass);color:var(--text-primary);cursor:pointer;background:#ffffff0d;border-radius:50%;justify-content:center;align-items:center;margin-left:20px;padding:8px;font-size:1.2rem;transition:all .3s;display:flex}.theme-toggle-btn:hover{background:#ffffff1a;transform:rotate(15deg)}.icon-sun{display:none}.light-mode .icon-sun{display:inline}.light-mode 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print{@page{margin:.5cm;size:auto}html,body{color:#000!important;-webkit-print-color-adjust:exact!important;print-color-adjust:exact!important;background:#fff!important;height:auto!important;overflow:visible!important}.glass-navbar,.layout-col-left,.layout-col-right,.viewing-status-header,.theme-toggle-btn,.header-actions,.control-section:not(.recommendations-section),.viz-header,.viz-hero-container .pane-right,#bottom-sheet,#sheet-toggle-btn{display:none!important}.dashboard-container.layout-3-col{margin:0!important;padding:0!important;display:block!important}.layout-col-center{gap:20px!important;width:100%!important;margin:0!important}.glass-panel{break-inside:avoid;box-shadow:none!important;color:#000!important;background:#fff!important;border:2px solid #eee!important;border-radius:12px!important;padding:20px!important}.viz-hero-container{border:2px solid 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#0000004d}.toast-success{background:#00b4d8}.toast-warn{background:#f59e0b}.toast-error{background:#dc2626}@keyframes toastIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}[data-theme=light]{--accent-glow:#4f46e51f;--accent-primary:#0e7490;--bg-panel:#fff;--card-bg:#fff;--text-primary:#0f172a;--text-secondary:#334155}[data-theme=light] body{color:#0f172a;background-color:#f1f5f9;background-image:none}[data-theme=light] input,[data-theme=light] select{color-scheme:light}[data-theme=light] .dashboard-container,[data-theme=light] .dashboard-wrapper{background:0 0}[data-theme=light] .dashboard-panel,[data-theme=light] .dashboard-card,[data-theme=light] .card,[data-theme=light] .glass-card,[data-theme=light] .compact-card,[data-theme=light] .calculator-card{color:#0f172a;background:#fff;border-color:#0000001f;box-shadow:0 2px 8px #00000014}[data-theme=light] .input-group label,[data-theme=light] .input-label{color:#334155}[data-theme=light] .input-group input,[data-theme=light] .input-group select,[data-theme=light] .glass-input,[data-theme=light] .input-field,[data-theme=light] .fintech-input,[data-theme=light] .dashboard-input,[data-theme=light] .styled-input{color:#0f172a;background:#e2e8f0;border-color:#00000026}[data-theme=light] .tab-btn,[data-theme=light] .calc-tab-btn,[data-theme=light] .segment-pill,[data-theme=light] .input-tab-btn{color:#334155;background:#e2e8f0;border-color:#00000014}[data-theme=light] .tab-btn.active,[data-theme=light] .calc-tab-btn.active,[data-theme=light] .segment-pill.active,[data-theme=light] .input-tab-btn.active{color:#fff;background:#0e7490}[data-theme=light] .preset-chip,[data-theme=light] .chip{color:#334155;background:#e2e8f0;border-color:#00000014}[data-theme=light] .preset-chip.active,[data-theme=light] .chip.active{color:#fff;background:#0e7490}[data-theme=light] .stat-card{background:#fff;border-color:#0000001f}[data-theme=light] .stat-label{color:#475569}[data-theme=light] .stat-value{color:#0f172a}[data-theme=light] .hero-result,[data-theme=light] .hero-result-box,[data-theme=light] .result-card{color:#0f172a;background:#fff;border-color:#0000001f}[data-theme=light] .formula-strip,[data-theme=light] .formula-pill{color:#334155;background:#f1f5f9;border-color:#00000014}[data-theme=light] .alert{color:#334155;background:#f8fafc;border-color:#00000014}[data-theme=light] .action-btn{color:#334155;background:#fff;border-color:#00000026}[data-theme=light] .action-btn:hover{background:#f1f5f9}[data-theme=light] .chart-card,[data-theme=light] .chart-block,[data-theme=light] .chart-wrapper{background:#fff;border-color:#0000001f}[data-theme=light] .scenario-card{color:#0f172a;background:#fff;border-color:#0000001f}[data-theme=light] .compare-card,[data-theme=light] .winner-card,[data-theme=light] .winner-banner{color:#0f172a;background:#f8fafc;border-color:#0000001f}[data-theme=light] table,[data-theme=light] .data-table,[data-theme=light] .schedule-table,[data-theme=light] .amort-table{border-color:#0000001f}[data-theme=light] th{color:#334155;background:#f1f5f9;border-color:#0000001f}[data-theme=light] td{color:#0f172a;border-color:#0000000f}[data-theme=light] .how-to-card,[data-theme=light] .how-it-works,[data-theme=light] .onboarding-card-final{color:#0f172a;background:#fff;border-color:#00000014}[data-theme=light] .faq-item{background:#fff;border-color:#00000014}[data-theme=light] .faq-question{color:#0f172a}[data-theme=light] .faq-answer{color:#475569}[data-theme=light] .breadcrumb,[data-theme=light] .calc-breadcrumb{color:#475569;background:#00000008}[data-theme=light] .breadcrumb a{color:#475569}[data-theme=light] .breadcrumb a:hover{color:#0e7490}[data-theme=light] .calc-btn,[data-theme=light] .calculate-btn{color:#fff;background:#0e7490}[data-theme=light] .toggle-btn{color:#334155;background:#e2e8f0}[data-theme=light] .toggle-btn.active{color:#fff;background:#0e7490}[data-theme=light] .modal-content,[data-theme=light] .modal-body{color:#0f172a;background:#fff;border-color:#0000001f}[data-theme=light] .tooltip-label{color:#475569}[data-theme=light] .glossary-card{color:#0f172a;background:#f8fafc;border-color:#00000014}[data-theme=light] .mobile-nav,[data-theme=light] .mobile-sticky-footer{background:#fffffffa;border-top:1px solid #0000001f}[data-theme=light] .mobile-nav .nav-link{color:#334155}[data-theme=light] .back-to-top{color:#475569;background:#0000000f}[data-theme=light] .sub-category-nav-wrapper,[data-theme=light] .sub-nav-link{color:#334155;background:0 0}[data-theme=light] .sub-nav-link.active{color:#0e7490;border-color:#0e7490}[data-theme=light] .custom-select-trigger,[data-theme=light] .glass-select,[data-theme=light] .styled-select{color:#0f172a;background:#e2e8f0;border-color:#00000026}[data-theme=light] .custom-select-options{background:#fff;border-color:#0000001f}[data-theme=light] .custom-select-option{color:#0f172a}[data-theme=light] .custom-select-option:hover{background:#f1f5f9}[data-theme=light] .controls-panel,[data-theme=light] .sidebar,[data-theme=light] .results-column{background:0 0}[data-theme=light] .section-title,[data-theme=light] .section-header{color:#0f172a}[data-theme=light] .section-subtitle,[data-theme=light] .section-desc{color:#475569}.next-step-banner{background:#e0b0ff12;border-top:1px solid #e0b0ff26;border-bottom:1px solid #e0b0ff26;flex-wrap:wrap;align-items:center;gap:8px 16px;padding:10px 24px;font-size:.85rem;display:flex}.nsb-text{color:var(--text-secondary,#88a)}.nsb-link{color:var(--accent-primary,#e0b0ff);font-weight:600;transition:color .2s}.nsb-link:hover{color:#fff}.nsb-sep{color:var(--text-secondary,#88a);opacity:.5}[data-theme=light] .next-step-banner{background:#0e749012;border-color:#0e74902e}[data-theme=light] .nsb-link{color:#0e7490}[data-theme=light] .nsb-link:hover{color:#0f172a}