.pool-calculator-container{--pool-primary: #0ea5e9;--pool-secondary: #38bdf8;--pool-accent: #7dd3fc;--pool-light: #f0f9ff;--pool-bg: #f0f9ff;--pool-text: #1f2937;--pool-text-light: #6b7280;--pool-border: #e5e7eb;--pool-radius: 12px;--pool-shadow: 0 4px 6px -1px rgba(0,0,0,.1);--pool-shadow-lg: 0 10px 25px -5px rgba(0,0,0,.15);max-width:900px;margin:0 auto;font-family:system-ui,-apple-system,sans-serif}.pool-hidden{display:none!important}.pool-title{font-size:2rem;font-weight:800;color:var(--pool-primary);margin:0 0 .5rem}.pool-description{color:var(--pool-text-light);font-size:1.1rem;margin:0}.pool-formula-container{background:linear-gradient(135deg,var(--pool-bg) 0%,var(--pool-light) 100%);border-radius:var(--pool-radius);padding:1.5rem;margin-bottom:1.5rem;border:1px solid var(--pool-border)}.pool-formula-title{font-size:1.1rem;font-weight:700;color:var(--pool-primary);margin:0 0 1rem;text-align:center}.pool-formula-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.pool-formula-card{background:#fff;border-radius:8px;padding:1rem;text-align:center;box-shadow:var(--pool-shadow)}.pool-formula-label{font-size:.85rem;font-weight:600;color:var(--pool-secondary);margin:0 0 .5rem}.pool-formula-math{font-size:.95rem;color:var(--pool-text);overflow-x:auto}.pool-form{background:#fff;border-radius:var(--pool-radius);padding:1.5rem;box-shadow:var(--pool-shadow);margin-bottom:1.5rem}.pool-input-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin-bottom:1rem}.pool-input-full{grid-column:1 / -1}.pool-input-group{display:flex;flex-direction:column}.pool-label{font-size:.85rem;font-weight:600;color:var(--pool-text);margin-bottom:.5rem}.pool-select{width:100%;padding:.75rem 1rem;border:2px solid var(--pool-border);border-radius:8px;font-size:1rem;background:#fff;cursor:pointer;transition:all .2s ease}.pool-select:focus{outline:none;border-color:var(--pool-primary);box-shadow:0 0 0 3px #0ea5e91a}.pool-input-wrapper{position:relative;display:flex;align-items:center}.pool-input{width:100%;padding:.75rem 1rem;border:2px solid var(--pool-border);border-radius:8px;font-size:1rem;transition:all .2s ease}.pool-input:focus{outline:none;border-color:var(--pool-primary);box-shadow:0 0 0 3px #0ea5e91a}.pool-input-suffix{position:absolute;right:.75rem;color:var(--pool-text-light);font-size:.85rem;font-weight:500}.pool-button-group{display:flex;gap:1rem}.pool-calculate-btn{flex:1;padding:1rem;background:linear-gradient(135deg,var(--pool-primary),var(--pool-secondary));color:#fff;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s ease}.pool-calculate-btn:hover{transform:translateY(-2px);box-shadow:var(--pool-shadow-lg)}.pool-reset-btn{padding:1rem 1.5rem;background:var(--pool-border);color:var(--pool-text);border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease}.pool-reset-btn:hover{background:#d1d5db}.pool-results{background:linear-gradient(135deg,var(--pool-primary),var(--pool-secondary));border-radius:var(--pool-radius);padding:1.5rem;margin-bottom:2rem}.pool-results-title{color:#fff;font-size:1.25rem;font-weight:700;margin:0 0 1rem;text-align:center}.pool-results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.75rem}.pool-result-card{background:#ffffff26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:10px;padding:1rem;text-align:center}.pool-result-card.primary{background:#fffffff2}.pool-result-card.primary .result-label,.pool-result-card.primary .result-value{color:var(--pool-primary)}.pool-result-card.highlight{background:#ffffffe6}.pool-result-card.highlight .result-label,.pool-result-card.highlight .result-value{color:var(--pool-secondary)}.pool-result-card .result-label{display:block;font-size:.75rem;color:#ffffffe6;margin-bottom:.25rem;font-weight:500}.pool-result-card .result-value{display:block;font-size:1.15rem;font-weight:800;color:#fff}.pool-content{margin-top:2rem}.pool-content-section{margin-bottom:2.5rem}.pool-section-title{font-size:1.5rem;font-weight:700;color:var(--pool-primary);margin:0 0 1rem;padding-bottom:.5rem;border-bottom:3px solid var(--pool-light)}.pool-paragraph{color:var(--pool-text);line-height:1.7;margin:0 0 1rem}.pool-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin:1.5rem 0}.pool-feature-card{background:var(--pool-bg);border-radius:10px;padding:1.25rem;text-align:center;border:1px solid var(--pool-border)}.pool-feature-card .feature-icon{font-size:2rem;display:block;margin-bottom:.5rem}.pool-feature-card .feature-title{font-size:1rem;font-weight:700;color:var(--pool-primary);margin:0 0 .5rem}.pool-feature-card .feature-desc{font-size:.85rem;color:var(--pool-text-light);margin:0}.pool-table-wrapper{overflow-x:auto;margin:1.5rem 0}.pool-data-table{width:100%;border-collapse:collapse;font-size:.9rem}.pool-data-table th{background:var(--pool-primary);color:#fff;padding:.75rem 1rem;text-align:left;font-weight:600}.pool-data-table td{padding:.75rem 1rem;border-bottom:1px solid var(--pool-border);color:var(--pool-text)}.pool-data-table tr:nth-child(2n){background:var(--pool-bg)}.pool-tips-list{display:flex;flex-direction:column;gap:1rem;margin:1.5rem 0}.pool-tip-item{display:flex;gap:1rem;padding:1rem;background:#fff;border-radius:10px;border:1px solid var(--pool-border)}.pool-tip-item .tip-icon{font-size:1.5rem;flex-shrink:0}.pool-tip-item .tip-title{font-size:1rem;font-weight:700;color:var(--pool-primary);margin:0 0 .25rem}.pool-tip-item .tip-text{font-size:.9rem;color:var(--pool-text);margin:0;line-height:1.6}.pool-faq-list{display:flex;flex-direction:column;gap:.5rem;margin:1.5rem 0}.pool-faq-item{border:1px solid var(--pool-border);border-radius:10px;overflow:hidden}.pool-faq-question{padding:1rem 1.25rem;font-weight:600;color:var(--pool-text);cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}.pool-faq-question::-webkit-details-marker{display:none}.pool-faq-question:after{content:"+";font-size:1.25rem;color:var(--pool-primary);font-weight:700}.pool-faq-item[open] .pool-faq-question:after{content:"−"}.pool-faq-item[open] .pool-faq-question{border-bottom:1px solid var(--pool-border);background:var(--pool-bg)}.pool-faq-answer{padding:1rem 1.25rem;color:var(--pool-text);line-height:1.6;margin:0;font-size:.9rem}@media (max-width: 640px){.pool-title{font-size:1.5rem}.pool-formula-grid,.pool-input-grid{grid-template-columns:1fr}.pool-button-group{flex-direction:column}.pool-results-grid{grid-template-columns:repeat(2,1fr)}}