/*! (c) 2026 HighCalc.com. All rights reserved. This code is protected by copyright. Copying, reproducing or reusing it without written permission is prohibited. */
.rf-calc *{margin:0;padding:0;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen-Sans,Ubuntu,Cantarell,sans-serif}.rf-calc{--rf-blue: #628dfd;--rf-blue-light: #8babff;--rf-green: #10b981;--rf-dark: #1e293b;--rf-light: #f8fafc;--rf-gray: #64748b;--rf-border: #e2e8f0;--rf-bg: #ffffff;--rf-radius: 6px;background:linear-gradient(135deg,#f8faff 0%,#f0f5ff 100%);padding:10px;width:100%;border-radius:var(--rf-radius)}.rf-card{background:var(--rf-bg);border-radius:var(--rf-radius);box-shadow:0 2px 4px rgba(0,0,0,0.05);padding:16px;border:1px solid var(--rf-border);max-width:1400px;margin:0 auto}.rf-content{display:flex;flex-wrap:wrap;gap:16px}.rf-input-panel{flex:1.5;min-width:280px;background:var(--rf-light);border-radius:var(--rf-radius);padding:14px;border:1px solid var(--rf-border)}.rf-result-panel{flex:0.9;min-width:260px;background:var(--rf-light);border-radius:var(--rf-radius);padding:14px;border:1px solid var(--rf-border)}@media(max-width:900px){.rf-content{flex-direction:column}.rf-input-panel,.rf-result-panel{flex:auto;width:100%}}.rf-title{text-align:center;margin-bottom:15px;padding-bottom:8px;border-bottom:1px solid var(--rf-border)}.rf-title h2{font-size:22px;font-weight:700;background:linear-gradient(90deg,#628dfd,#8babff);-webkit-background-clip:text;background-clip:text;color:transparent}.rf-title p{font-size:12px;color:var(--rf-gray);margin-top:4px}.rf-field{margin-bottom:16px}.rf-field label{display:block;margin-bottom:6px;font-weight:600;color:var(--rf-dark);font-size:13px}.rf-input-wrapper{display:flex;align-items:center;gap:8px;margin-bottom:6px}.rf-text{width:100%;flex:1;padding:10px 14px;border:1px solid var(--rf-border);border-radius:6px;font-size:14px;outline:none;background:var(--rf-bg);color:var(--rf-dark);transition:0.2s}.rf-text:focus{border-color:var(--rf-blue);box-shadow:0 0 0 2px rgba(98,141,253,0.1)}.rf-range-hint{font-size:11px;color:var(--rf-gray);text-align:right;font-weight:500;margin-top:3px}.rf-items-list{padding-right:0}.rf-calc-item{background:var(--rf-bg);border-radius:8px;padding:14px;margin-bottom:12px;border:1px solid var(--rf-border)}.rf-item-title{font-size:15px;font-weight:700;color:var(--rf-dark);margin-bottom:12px;padding-bottom:6px;border-bottom:1px solid var(--rf-border)}.rf-item-fields{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:10px}.rf-item-field{display:flex;align-items:center;gap:6px;background:var(--rf-light);padding:6px 12px;border-radius:6px}.rf-item-field span{font-size:12px;font-weight:600;color:var(--rf-gray)}.rf-item-field input{width:80px;padding:6px 8px;border:1px solid var(--rf-border);border-radius:5px;font-size:13px;text-align:center;outline:none}.rf-item-field input:focus{border-color:var(--rf-blue)}.rf-item-result{background:rgba(98,141,253,0.08);border-radius:6px;padding:8px 12px;display:flex;justify-content:space-between;font-size:13px;margin-top:8px;flex-wrap:wrap;gap:8px}.rf-item-volume{font-weight:700;color:var(--rf-blue)}.rf-item-cost{font-weight:700;color:var(--rf-green)}.rf-summary-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:12px 0}.rf-summary-item{background:var(--rf-bg);border-radius:6px;padding:12px;text-align:center;border:1px solid var(--rf-border)}.rf-label-sm{font-size:11px;color:var(--rf-gray);font-weight:600;text-transform:uppercase}.rf-value{font-size:16px;font-weight:700;color:var(--rf-dark);margin-top:4px}.rf-value-large{font-size:26px;font-weight:800;color:var(--rf-blue)}.rf-material-breakdown{background:var(--rf-bg);border-radius:8px;padding:14px;margin:12px 0;border:1px solid var(--rf-border)}.rf-material-row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--rf-border);font-size:13px}.rf-material-row:last-child{border-bottom:none}.rf-cost-total{background:linear-gradient(135deg,#6281fd 0%,#8babff 100%);color:white;padding:14px;border-radius:8px;text-align:center;font-weight:700;font-size:17px;margin-top:10px}.rf-note{background:linear-gradient(135deg,rgba(16,185,129,0.08),rgba(16,185,129,0.1));border-radius:8px;padding:10px;margin-top:12px;font-size:12px;border-left:3px solid #10b981;line-height:1.5}.rf-grade-selector{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.rf-grade{padding:7px 14px;background:var(--rf-bg);border:1px solid var(--rf-border);border-radius:20px;font-size:13px;font-weight:600;color:var(--rf-dark);cursor:pointer;transition:0.2s}.rf-grade.active{background:var(--rf-blue);color:white;border-color:var(--rf-blue)}.rf-grade:hover:not(.active){border-color:var(--rf-blue);color:var(--rf-blue)}.rf-price-row{display:flex;gap:10px;margin-bottom:12px;flex-wrap:wrap}.rf-price-row .rf-field{flex:1;margin-bottom:0;min-width:100px}@media(max-width:600px){.rf-card{padding:10px}.rf-summary-grid{gap:8px}.rf-value-large{font-size:22px}.rf-item-field input{width:65px}}.rf-slider{-webkit-appearance:none;appearance:none;width:100%;height:26px;margin:-8px 0 0;position:relative;top:10px;padding:0;background:transparent;outline:none;cursor:pointer;touch-action:pan-y}.rf-slider::-webkit-slider-runnable-track{height:6px;border-radius:3px;background:linear-gradient(90deg,#ef4444,#f97316,#f59e0b,#10b981,#628dfd)}.rf-slider::-moz-range-track{height:6px;border-radius:3px;background:linear-gradient(90deg,#ef4444,#f97316,#f59e0b,#10b981,#628dfd)}.rf-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;margin-top:-8px;border-radius:50%;background:#ffffff;border:2px solid var(--rf-blue);cursor:pointer;box-shadow:0 1px 4px rgba(0,0,0,0.15)}.rf-slider::-moz-range-thumb{width:18px;height:18px;box-sizing:content-box;border-radius:50%;background:#ffffff;border:2px solid var(--rf-blue);cursor:pointer;box-shadow:0 1px 4px rgba(0,0,0,0.15)}.rf-slider:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 3px rgba(98,141,253,0.35)}.rf-slider:focus-visible::-moz-range-thumb{box-shadow:0 0 0 3px rgba(98,141,253,0.35)}.rf-range-hint{margin-top:14px}.rf-calc input[type=number]{-moz-appearance:textfield;appearance:textfield}.rf-calc input[type=number]::-webkit-inner-spin-button,.rf-calc input[type=number]::-webkit-outer-spin-button{opacity:1}.rf-calc,.rf-calc *{overflow-anchor:none}.rf-field[hidden]{display:none}.rf-select{width:100%;padding:10px 14px;border:1px solid var(--rf-border);border-radius:6px;font-size:14px;background:var(--rf-bg);color:var(--rf-dark);outline:none}.rf-select:focus{border-color:var(--rf-blue);box-shadow:0 0 0 2px rgba(98,141,253,0.1)}.rf-item-field select{padding:6px 8px;border:1px solid var(--rf-border);border-radius:5px;font-size:13px;background:var(--rf-bg);color:var(--rf-dark);outline:none;max-width:190px}.rf-item-field select:focus{border-color:var(--rf-blue)}.rf-item-hint{font-size:11px;color:var(--rf-gray);margin:-2px 0 6px}.rf-err{color:#dc2626;font-size:12.5px;margin:2px 0 10px;min-height:0}.rf-grade[disabled]{opacity:.5}.rf-field-pair{display:flex;gap:10px;flex-wrap:wrap}.rf-field-pair>div{flex:1;min-width:110px}.rf-summary-grid.rf-three{grid-template-columns:repeat(2,1fr)}.rf-sub-hint{font-size:11px;color:var(--rf-gray);font-weight:500;margin-top:2px}@media(max-width:600px){.rf-item-field select{max-width:150px}.rf-item-field{flex:1 1 auto}}.rf-item-title small{font-size:11px;font-weight:500;color:var(--rf-gray)}.rf-field{margin-bottom:12px}.rf-calc-item{padding:10px 12px;margin-bottom:10px}.rf-item-title{margin-bottom:8px;font-size:14px}.rf-item-fields{margin-bottom:6px;gap:8px}.rf-item-result{margin-top:4px;padding:6px 12px}.rf-field-pair .rf-grade-selector{margin-bottom:0}.rf-field-pair .rf-grade{padding:7px 11px}.rf-range-hint{font-size:10.5px}@media(max-width:600px){.rf-item-fields{display:grid;grid-template-columns:1fr 1fr;gap:8px}.rf-item-field{padding:6px 8px;min-width:0}.rf-item-field span{font-size:11px;white-space:nowrap}.rf-item-field input,.rf-item-field select{width:100%;min-width:0;max-width:none}.rf-item-field:first-child:has(select#rf-shingle){grid-column:1 / -1}.rf-field-pair>div{flex:1 1 100%}}@media(max-width:600px){.rf-item-field{flex-direction:column;align-items:stretch;gap:4px;padding:8px}.rf-item-field input,.rf-item-field select{width:100%;text-align:left;padding:8px}.rf-item-field input[type=number]{text-align:center}}[data-hc-guard]{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}[data-hc-guard] input,[data-hc-guard] select,[data-hc-guard] textarea{-webkit-user-select:text;user-select:text}