.roi-calculator{padding:2rem 0}.tool-header{text-align:center;margin-bottom:2rem}.tool-header h1{font-size:2rem;color:var(--gray-800);margin-bottom:.5rem}.tool-header p{color:var(--gray-600)}.comparison-toggle{display:flex;justify-content:center;margin-bottom:1.5rem}.toggle-switch{display:flex;align-items:center;gap:.75rem;cursor:pointer;-webkit-user-select:none;user-select:none}.toggle-switch input[type=checkbox]{position:absolute;opacity:0;width:0;height:0}.toggle-slider{position:relative;width:48px;height:24px;background-color:var(--gray-300);border-radius:24px;transition:background-color .2s}.toggle-slider:before{content:"";position:absolute;top:2px;left:2px;width:20px;height:20px;background-color:#fff;border-radius:50%;transition:transform .2s}.toggle-switch input[type=checkbox]:checked+.toggle-slider{background-color:var(--primary)}.toggle-switch input[type=checkbox]:checked+.toggle-slider:before{transform:translate(24px)}.toggle-label{font-size:1rem;font-weight:600;color:var(--gray-900)}.calc-type-selector{display:flex;gap:1.5rem;justify-content:center;align-items:center;flex-wrap:wrap;margin-bottom:2rem}.type-selector-section h3{font-size:1.15rem;font-weight:700;color:var(--gray-900);margin-bottom:1.25rem;padding-bottom:.75rem;border-bottom:2px solid var(--primary);letter-spacing:.03em}.type-selector-section{display:flex;flex-direction:column;gap:.75rem}.type-selector-section:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}.selector-label{font-size:.85rem;font-weight:600;color:var(--gray-600);text-align:center;text-transform:uppercase;letter-spacing:.5px}.type-buttons{display:flex;gap:.75rem;flex-wrap:wrap;justify-content:center}.swap-button-container{display:flex;align-items:center;padding-top:1.5rem}.swap-scenarios-btn{width:40px;height:40px;background:var(--white);border:2px solid var(--gray-200);border-radius:50%;cursor:pointer;font-size:1.5rem;color:var(--gray-700);transition:all .2s;display:flex;align-items:center;justify-content:center}.swap-scenarios-btn:hover{border-color:var(--primary);color:var(--primary);transform:rotate(180deg)}.calc-type-btn{display:flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;background:var(--white);border:2px solid var(--gray-200);border-radius:var(--radius);cursor:pointer;font-size:.95rem;font-weight:500;color:var(--gray-700);transition:all .2s}.calc-type-btn:hover{border-color:var(--primary-light);color:var(--primary)}.calc-type-btn.active{border-color:var(--primary);background:#4f46e50d;color:var(--primary)}.calc-type-icon{font-size:1.25rem}.calc-layout{display:grid;grid-template-columns:var(--tool-controls-width, 420px) 1fr;gap:var(--tool-content-gap, 2rem);align-items:start}.calc-inputs{position:sticky;top:100px}.calc-inputs h3{margin-bottom:1.5rem;color:var(--gray-800)}.calc-results{display:flex;flex-direction:column;gap:1.5rem}.roi-display{text-align:center;padding:2rem}.roi-display.excellent{background:linear-gradient(135deg,#10b981,#059669);color:#fff}.roi-display.good{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff}.roi-display.moderate{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff}.roi-display.negative{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff}.roi-label{font-size:.875rem;text-transform:uppercase;letter-spacing:.05em;opacity:.9;margin-bottom:.5rem}.roi-value{font-size:4rem;font-weight:700;line-height:1;margin-bottom:.5rem}.roi-verdict{font-size:1.25rem;font-weight:500}.results-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.result-card{text-align:center;padding:1.25rem}.result-label{font-size:.875rem;color:var(--gray-500);margin-bottom:.5rem}.result-value{font-size:1.5rem;font-weight:700;color:var(--gray-800)}.result-value.positive{color:var(--success)}.result-value.negative{color:var(--danger)}.details-card h4{margin-bottom:1rem;color:var(--gray-700)}.details-list{display:flex;flex-direction:column;gap:.75rem}.detail-row{display:flex;justify-content:space-between;padding-bottom:.75rem;border-bottom:1px solid var(--gray-200)}.detail-row:last-child{border-bottom:none;padding-bottom:0}.detail-row span:first-child{color:var(--gray-600)}.detail-row span:last-child{font-weight:600;color:var(--gray-800)}.roi-formula{background:var(--gray-50);border:1px dashed var(--gray-300)}.roi-formula h4{margin-bottom:.75rem;color:var(--gray-700)}.formula{font-family:Monaco,Menlo,monospace;font-size:.875rem;color:var(--gray-600);background:var(--white);padding:.75rem;border-radius:var(--radius);margin-bottom:.5rem}.formula-example{font-size:.85rem;color:var(--gray-500)}.copy-results-btn{display:flex;align-items:center;justify-content:center;gap:.5rem;width:100%;padding:.875rem 1.5rem;background:linear-gradient(135deg,var(--primary) 0%,#6366f1 100%);color:#fff;border:none;border-radius:var(--radius);font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 8px #4f46e54d}.copy-results-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #4f46e566}.copy-results-btn:active{transform:translateY(0)}.copy-results-btn svg{flex-shrink:0}@media (max-width: 1023px){.calc-layout{grid-template-columns:1fr}.calc-inputs{position:static}}@media (max-width: 768px){.calc-type-selector{flex-direction:column}.calc-type-btn{justify-content:center}.roi-value{font-size:3rem}.results-grid{grid-template-columns:1fr}}