html{box-sizing:border-box}*,*:before,*:after{box-sizing:inherit}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;margin:0;padding:0;color:#333;background-color:#f5f5f5;transition:background-color .3s ease,color .3s ease}.dark-mode body{background-color:#0d0d0d;color:#e0e0e0}.dark-mode{--bg-primary: #0d0d0d;--bg-secondary: #1a1a1a;--bg-tertiary: #1f1f1f;--text-primary: #e0e0e0;--text-secondary: #b0b0b0;--border-color: #333333;--primary-color: #5088b8;--success-bg: #1a3d1c;--success-text: #7bc67e;--error-bg: #3d1a1a;--error-text: #ff6b6b;--warning-bg: #3d2f1a;--warning-text: #ffd166}.dark-mode .calculator-container,.dark-mode .result-card,.dark-mode .positive-result,.dark-mode .negative-result,.dark-mode .template-card,.dark-mode .history-item,.dark-mode .faq-item,.dark-mode .concept-card,.dark-mode .metric-card,.dark-mode .example-box,.dark-mode .formula-box,.dark-mode .visualization-section,.dark-mode .sensitivity-section,.dark-mode .comparison-table-container,.dark-mode .detailed-explanation,.dark-mode .interpretation-guide>div{background-color:var(--bg-secondary)!important;border-color:var(--border-color)!important;color:var(--text-primary)!important}.dark-mode .positive-result{background-color:var(--success-bg)!important;color:var(--success-text)!important}.dark-mode .negative-result{background-color:var(--error-bg)!important;color:var(--error-text)!important}.dark-mode .validation-errors{background-color:var(--error-bg)!important;color:var(--error-text)!important;border-color:var(--error-text)!important}.dark-mode input,.dark-mode select,.dark-mode textarea{background-color:var(--bg-secondary)!important;color:var(--text-primary)!important;border-color:var(--border-color)!important}.dark-mode input::placeholder{color:var(--text-secondary)}.dark-mode h1,.dark-mode h2,.dark-mode h3,.dark-mode h4,.dark-mode h5,.dark-mode h6{color:var(--primary-color)!important}.dark-mode p,.dark-mode label,.dark-mode span,.dark-mode li{color:var(--text-primary)}.dark-mode .help-text,.dark-mode .metric-description{color:var(--text-secondary)!important}.dark-mode .info-text{background-color:var(--bg-secondary)!important;color:var(--text-primary)!important;border-color:var(--border-color)!important}.dark-mode button:not(.dark-mode-toggle){background-color:var(--primary-color);color:#fff;border-color:var(--primary-color)}.dark-mode button:not(.dark-mode-toggle):hover{background-color:#3a8eef}.dark-mode .reset-btn,.dark-mode .delete-btn{background-color:transparent;color:var(--error-text);border-color:var(--error-text)}.dark-mode footer{background-color:var(--bg-tertiary)!important;border-color:var(--border-color)!important;color:var(--text-secondary)!important}.dark-mode .how-it-works,.dark-mode .faq-section{background-color:var(--bg-primary);border-color:var(--border-color)!important}.dark-mode .faq-question{background-color:var(--bg-tertiary)!important;color:var(--text-primary)!important}.dark-mode .faq-answer{background-color:var(--bg-secondary)!important;color:var(--text-primary)!important}.dark-mode .faq-answer p{color:var(--text-primary)!important}.dark-mode table{background-color:var(--bg-secondary);color:var(--text-primary)}.dark-mode th{background-color:var(--bg-tertiary);color:var(--primary-color)}.dark-mode td{border-color:var(--border-color)}.dark-mode .guide-item,.dark-mode .interpretation{opacity:1}.dark-mode .interpretation p,.dark-mode .interpretation strong,.dark-mode .calculation-result p,.dark-mode .example-box p{color:#e8e8e8!important}.dark-mode .calculation-steps,.dark-mode .calculation-result,.dark-mode .step,.dark-mode .formula-legend,.dark-mode .template-stats,.dark-mode .history-search,.dark-mode .additional-metrics,.dark-mode .npv-result,.dark-mode .sensitivity-table,.dark-mode .comparison-insights,.dark-mode .chart-container,.dark-mode .considerations,.dark-mode .toggle-details-btn,.dark-mode .templates-panel{background-color:var(--bg-secondary)!important;color:var(--text-primary)!important;border-color:var(--border-color)!important}.dark-mode .templates-description,.dark-mode .template-description{color:var(--text-secondary)!important}.dark-mode .positive-guide{background-color:var(--success-bg)!important;color:var(--success-text)!important;border-color:var(--success-text)!important}.dark-mode .negative-guide{background-color:var(--error-bg)!important;color:var(--error-text)!important;border-color:var(--error-text)!important}.dark-mode .neutral-guide{background-color:var(--warning-bg)!important;color:var(--warning-text)!important;border-color:var(--warning-text)!important}.dark-mode code{background-color:var(--bg-tertiary);color:var(--primary-color)}.dark-mode .formula-box code{color:#d0d0d0!important}.dark-mode strong,.dark-mode b{color:var(--text-primary)}.dark-mode main,.dark-mode section,.dark-mode article,.dark-mode div{color:var(--text-primary)}.dark-mode [style*="background-color: #fff"],.dark-mode [style*="background-color: white"],.dark-mode [style*="background-color: #f"],.dark-mode [style*="background: #fff"],.dark-mode [style*="background: white"]{background-color:var(--bg-secondary)!important}.skip-link{position:absolute;top:-40px;left:0;background:#2e6da4;color:#fff;padding:8px;text-decoration:none;z-index:100;font-weight:500}.skip-link:focus{top:0}.dark-mode .skip-link{background:#4a9eff}.update-banner.svelte-16x4z9y{position:fixed;bottom:1rem;right:1rem;background-color:#2e6da4;color:#fff;padding:1rem 1.5rem;border-radius:4px;box-shadow:0 4px 12px #0000004d;display:flex;align-items:center;gap:1rem;z-index:1000}.update-banner.svelte-16x4z9y p:where(.svelte-16x4z9y){margin:0;font-weight:500}.update-banner.svelte-16x4z9y button:where(.svelte-16x4z9y){padding:.5rem 1rem;background-color:#fff;color:#2e6da4;border:none;border-radius:4px;font-weight:600;cursor:pointer;transition:background-color .2s}.update-banner.svelte-16x4z9y button:where(.svelte-16x4z9y):hover{background-color:#f0f0f0}.dark-mode-toggle.svelte-16x4z9y{position:fixed;top:1rem;right:1rem;width:40px;height:40px;border-radius:50%;border:2px solid #2e6da4;background-color:#fff;font-size:1.2rem;cursor:pointer;box-shadow:0 2px 8px #0003;z-index:1000;transition:all .3s ease;display:flex;align-items:center;justify-content:center}.dark-mode-toggle.svelte-16x4z9y:hover{transform:scale(1.1);box-shadow:0 4px 12px #0000004d}.dark-mode .dark-mode-toggle.svelte-16x4z9y{background-color:#1a1a1a;border-color:#4a9eff}.dark-mode{--bg-color: #1a1a1a;--text-color: #e0e0e0;--card-bg: #2a2a2a;--border-color: #404040;--primary-color: #4a9eff;--secondary-bg: #252525;--hover-bg: #353535}html:not(.dark-mode){--bg-color: #ffffff;--text-color: #333333;--card-bg: #f9f9f9;--border-color: #e0e0e0;--primary-color: #2e6da4;--secondary-bg: #f5f5f5;--hover-bg: #eeeeee}.dark-mode body{background-color:var(--bg-color);color:var(--text-color)}@media (max-width: 600px){.dark-mode-toggle.svelte-16x4z9y{width:36px;height:36px;font-size:1.1rem}}