.irr-calculator{--irr-primary: #4338ca;--irr-primary-dark: #3730a3;--irr-secondary: #6366f1;--irr-accent: #a5b4fc;--irr-bg: #eef2ff;--irr-card-bg: #ffffff;--irr-text: #312e81;--irr-text-muted: #4338ca;--irr-border: #c7d2fe;--irr-shadow: 0 4px 20px rgba(67, 56, 202, .12);max-width:900px;margin:0 auto;font-family:system-ui,-apple-system,sans-serif}.irr-header{text-align:center;margin-bottom:2rem}.irr-title{font-size:2rem;font-weight:800;color:var(--irr-primary);margin:0 0 .5rem}.irr-description{color:var(--irr-text-muted);font-size:1.1rem;margin:0}.irr-formula-container{background:linear-gradient(135deg,var(--irr-bg) 0%,#e0e7ff 100%);border-radius:16px;padding:1.5rem;margin-bottom:2rem;border:1px solid var(--irr-border)}.irr-formula-title{font-size:1.1rem;font-weight:700;color:var(--irr-primary);margin:0 0 1rem;text-align:center}.irr-formula-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.irr-formula-card{background:var(--irr-card-bg);border-radius:12px;padding:1rem;text-align:center;box-shadow:0 2px 8px #0000000f}.irr-formula-label{display:block;font-size:.85rem;font-weight:600;color:var(--irr-text-muted);margin-bottom:.5rem}.irr-formula-math{font-size:.95rem;color:var(--irr-text);overflow-x:auto;padding:.25rem 0}.irr-form-container{background:var(--irr-card-bg);border-radius:16px;padding:1.5rem;box-shadow:var(--irr-shadow);margin-bottom:2rem}.irr-form{display:flex;flex-direction:column;gap:1.25rem}.irr-input-group{display:flex;flex-direction:column;gap:.5rem}.irr-label{font-weight:600;font-size:.9rem;color:var(--irr-text)}.irr-input-wrapper{position:relative;display:flex;align-items:center}.irr-input-prefix{position:absolute;left:1rem;color:var(--irr-text-muted);font-weight:600}.irr-input-suffix{position:absolute;right:1rem;color:var(--irr-text-muted);font-weight:600;font-size:.9rem}.irr-input{width:100%;padding:.875rem 1rem .875rem 2rem;border:2px solid var(--irr-border);border-radius:10px;font-size:1.1rem;transition:all .2s ease;background:var(--irr-bg)}.irr-input-rate{padding-left:1rem;padding-right:2.5rem;text-align:center}.irr-input:focus{outline:none;border-color:var(--irr-primary);background:#fff;box-shadow:0 0 0 4px #4338ca1a}.irr-cashflows-section{margin-top:.5rem}.irr-cashflows-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.irr-btn-add{padding:.5rem 1rem;background:var(--irr-accent);color:var(--irr-primary-dark);border:none;border-radius:8px;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s ease}.irr-btn-add:hover{background:var(--irr-secondary);color:#fff}.irr-cashflows-list{display:flex;flex-direction:column;gap:.75rem}.irr-cashflow-item{display:flex;align-items:center;gap:1rem;background:var(--irr-bg);padding:.75rem;border-radius:10px}.irr-cashflow-year{font-weight:600;color:var(--irr-primary);min-width:60px}.irr-cashflow-input-wrap{flex:1}.irr-cashflow-input{padding:.75rem 1rem .75rem 2rem!important}.irr-btn-remove{width:32px;height:32px;border:none;background:#fee2e2;color:#dc2626;border-radius:8px;font-size:1.25rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.irr-btn-remove:hover{background:#dc2626;color:#fff}.irr-buttons{display:flex;gap:1rem;margin-top:.5rem}.irr-btn{flex:1;padding:1rem;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .2s ease}.irr-btn-primary{background:linear-gradient(135deg,var(--irr-primary) 0%,var(--irr-secondary) 100%);color:#fff;box-shadow:0 4px 15px #4338ca4d}.irr-btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #4338ca66}.irr-btn-secondary{background:var(--irr-bg);color:var(--irr-text-muted);border:2px solid var(--irr-border)}.irr-btn-secondary:hover{border-color:var(--irr-primary);color:var(--irr-primary)}.irr-results{background:var(--irr-card-bg);border-radius:16px;padding:1.5rem;box-shadow:var(--irr-shadow);margin-bottom:2rem}.irr-results-title{font-size:1.25rem;font-weight:700;color:var(--irr-primary);margin:0 0 1.5rem;text-align:center}.irr-decision-banner{text-align:center;padding:1rem;border-radius:12px;font-weight:700;font-size:1.1rem;margin-bottom:1.5rem}.irr-decision-accept{background:linear-gradient(135deg,#dcfce7,#bbf7d0);color:#166534}.irr-decision-reject{background:linear-gradient(135deg,#fee2e2,#fecaca);color:#991b1b}.irr-decision-marginal{background:linear-gradient(135deg,#fef3c7,#fde68a);color:#92400e}.irr-main-result{text-align:center;background:linear-gradient(135deg,var(--irr-primary) 0%,var(--irr-secondary) 100%);border-radius:16px;padding:2rem;margin-bottom:1.5rem}.irr-main-label{display:block;font-size:.9rem;font-weight:600;color:#ffffffe6;margin-bottom:.5rem}.irr-main-value{font-size:3rem;font-weight:800;color:#fff}.irr-summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:1.5rem}.irr-summary-card{background:var(--irr-bg);border-radius:12px;padding:1rem;text-align:center}.irr-summary-label{display:block;font-size:.75rem;font-weight:600;color:var(--irr-text-muted);margin-bottom:.25rem}.irr-summary-value{font-size:1.1rem;font-weight:800;color:var(--irr-text)}.irr-table-wrapper{overflow-x:auto;border-radius:12px;box-shadow:0 2px 8px #0000000f}.irr-table{width:100%;border-collapse:collapse;background:#fff;font-size:.9rem}.irr-table th{background:var(--irr-primary);color:#fff;padding:.875rem 1rem;text-align:left;font-weight:600}.irr-table td{padding:.75rem 1rem;border-bottom:1px solid var(--irr-border)}.irr-table tr:hover{background:var(--irr-bg)}.irr-row-initial{background:#e0e7ff}.irr-table-year{font-weight:700;color:var(--irr-primary)}.irr-table-cumulative{font-weight:700}.irr-table-type{font-weight:700;color:var(--irr-primary)}.irr-content{margin-top:3rem}.irr-content-section{margin-bottom:2.5rem}.irr-content-title{font-size:1.5rem;font-weight:700;color:var(--irr-text);margin:0 0 1rem;padding-bottom:.5rem;border-bottom:3px solid var(--irr-primary)}.irr-content-text{color:var(--irr-text-muted);line-height:1.7;margin:0 0 1rem}.irr-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-top:1.5rem}.irr-feature-card{background:var(--irr-bg);border-radius:12px;padding:1.25rem;text-align:center}.irr-feature-icon{font-size:2rem;display:block;margin-bottom:.75rem}.irr-feature-title{font-size:1rem;font-weight:700;color:var(--irr-text);margin:0 0 .5rem}.irr-feature-desc{font-size:.85rem;color:var(--irr-text-muted);margin:0;line-height:1.5}.irr-tips-grid{display:grid;gap:1rem;margin-top:1.5rem}.irr-tip-card{display:flex;gap:1rem;background:var(--irr-card-bg);border-radius:12px;padding:1.25rem;box-shadow:0 2px 8px #0000000f;border-left:4px solid var(--irr-primary)}.irr-tip-icon{font-size:1.5rem;flex-shrink:0}.irr-tip-content{flex:1}.irr-tip-title{font-size:1rem;font-weight:700;color:var(--irr-text);margin:0 0 .5rem}.irr-tip-text{font-size:.9rem;color:var(--irr-text-muted);margin:0;line-height:1.6}.irr-faqs{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}.irr-faq-item{background:var(--irr-card-bg);border-radius:12px;padding:1.25rem;box-shadow:0 2px 8px #0000000f}.irr-faq-question{font-size:1rem;font-weight:700;color:var(--irr-primary);margin:0 0 .75rem}.irr-faq-answer{font-size:.9rem;color:var(--irr-text-muted);margin:0;line-height:1.6}@media (max-width: 768px){.irr-title{font-size:1.5rem}.irr-formula-grid{grid-template-columns:1fr}.irr-summary-grid{grid-template-columns:repeat(2,1fr)}.irr-features-grid{grid-template-columns:1fr}.irr-cashflow-item{flex-wrap:wrap}.irr-cashflow-year{min-width:100%;margin-bottom:.5rem}.irr-main-value{font-size:2rem}}