:root{font-family:Helvetica Neue,Arial,sans-serif;line-height:1.5;font-weight:400;color:#2d3748;background-color:#f5f7fa}*{box-sizing:border-box;margin:0;padding:0}body{margin:0;min-width:320px;min-height:100vh}*{box-sizing:border-box;margin:0;padding:0;font-family:Helvetica Neue,Arial,sans-serif}body{background-color:#f5f7fa;display:flex;justify-content:center;align-items:center;min-height:100vh}.calculator-card{background-color:#fff;border-radius:16px;box-shadow:0 4px 6px #0000001a;width:100%;max-width:400px;padding:24px;user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.title{font-size:20px;font-weight:700;text-align:center;color:#2d3748;margin-bottom:20px}.section-title{font-size:16px;font-weight:700;color:#4a5568;margin-bottom:12px;display:flex;align-items:center}.help-icon{margin-left:8px;width:18px;height:18px;background-color:#4299e1;color:#fff;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:12px;cursor:pointer;position:relative}.tooltip{visibility:hidden;position:absolute;top:100%;left:50%;transform:translate(-50%);background-color:#4a5568;color:#fff;padding:8px 12px;border-radius:6px;font-size:12px;width:200px;z-index:100;text-align:left;box-shadow:0 2px 5px #0003;margin-top:8px}.help-icon:hover .tooltip{visibility:visible}.help-icon:focus .tooltip{visibility:visible}.input-group{display:flex;gap:10px;margin-bottom:10px}.input-field{flex-grow:1;height:46px;background-color:#f7fafc;border:1px solid #CBD5E0;border-radius:8px;text-align:center;font-size:16px;color:#2d3748;user-select:text;-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text}input[type=number]{-webkit-appearance:textfield;-moz-appearance:textfield;appearance:textfield}input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.unit-field{width:60px;height:46px;background-color:#f7fafc;border:1px solid #CBD5E0;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px;color:#4a5568}.control-buttons{display:flex;gap:10px;margin-bottom:10px}.control-button{flex:1;height:46px;background-color:#ebf4ff;border:1px solid #BEE3F8;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#3182ce;font-size:20px;cursor:pointer}.quick-buttons{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:12px}.quick-button{flex:1;min-width:60px;height:36px;background-color:#ebf4ff;border:1px solid #BEE3F8;border-radius:18px;display:flex;align-items:center;justify-content:center;color:#3182ce;font-size:14px;cursor:pointer;transition:background-color .2s,transform .1s}.quick-button:hover{background-color:#d6e4ff}.quick-button:active{transform:scale(.95)}.divider{height:1px;background-color:#e2e8f0;margin:20px 0}.selector{width:100%;height:46px;background-color:#f7fafc;border:1px solid #CBD5E0;border-radius:8px;padding:0 12px;font-size:16px;color:#2d3748;margin-bottom:20px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234A5568' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}.unit-price-section,.amperage-section{margin-bottom:20px}.unit-price-section .input-field:disabled{background-color:#edf2f7;color:#4a5568;cursor:not-allowed;border:1px solid #E2E8F0}.unit-price-section .input-field:enabled{background-color:#fff;border:1px solid #4299E1;color:#2d3748}.unit-price-section .input-field:enabled:hover{border-color:#3182ce}.unit-price-section .input-field:enabled:focus{border-color:#2b6cb0;box-shadow:0 0 0 1px #2b6cb0}.calculate-button{width:100%;height:48px;background-color:#4299e1;border:none;border-radius:8px;color:#fff;font-size:16px;font-weight:700;cursor:pointer;transition:background-color .2s;margin-bottom:20px}.calculate-button:hover{background-color:#3182ce}.calculate-button:focus{outline:2px solid #3182CE;outline-offset:2px}.accordion-header{background-color:#f7fafc;padding:12px;border-radius:8px;margin-bottom:10px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;border:1px solid #E2E8F0}.accordion-header .header-text{font-size:16px;font-weight:500;color:#4a5568;margin:0}.accordion-content{margin-bottom:20px;padding:5px}.accordion-content.hidden{display:none}.results-card{background:linear-gradient(135deg,#4299e1,#3182ce);color:#fff;border-radius:12px;padding:20px;margin-bottom:20px;box-shadow:0 4px 10px #3182ce4d;animation:fadeIn .5s ease-in-out;user-select:text;-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.results-title{font-size:18px;font-weight:700;margin-bottom:15px;text-align:center}.results-value{font-size:28px;font-weight:700;text-align:center;margin-bottom:15px;user-select:text;-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text}.results-details{display:flex;justify-content:space-between;margin-bottom:15px}.results-detail-item{text-align:center}.results-detail-label{font-size:12px;margin-bottom:5px;user-select:text;-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text}.results-detail-value{font-size:16px;font-weight:700;user-select:text;-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text}.chart-container{margin-top:15px;height:100px;display:flex;align-items:flex-end;justify-content:space-between;padding-top:10px;border-top:1px solid rgba(255,255,255,.3)}.chart-bar{flex:1;margin:0 2px;background-color:#ffffffb3;border-radius:3px 3px 0 0;position:relative;max-width:30px}.chart-label{position:absolute;top:-20px;left:50%;transform:translate(-50%);font-size:10px;white-space:nowrap}.share-container{display:flex;gap:10px;margin-bottom:20px}.share-button{flex:1;height:40px;background-color:#f7fafc;border:1px solid #CBD5E0;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px;color:#4a5568;cursor:pointer;gap:8px;transition:background-color .2s}.share-button:hover{background-color:#ebf4ff}.share-button:focus{outline:2px solid #3182CE;outline-offset:2px}.hidden{display:none!important}.spinner-container{display:flex;gap:10px;flex:1}.spinner-controls{display:flex;flex-direction:row;width:100%;margin-bottom:10px;justify-content:space-between;gap:10px}.spinner-button{background-color:#ebf4ff;border:1px solid #BEE3F8;color:#3182ce;flex:1;height:36px;border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:14px;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background-color .2s,transform .1s}.spinner-button:hover{background-color:#d6e4ff}.spinner-button:active{transform:scale(.95)}.spinner-button:first-child{border-right:none;border-radius:4px 0 0 4px}.spinner-button:last-child{border-radius:0 4px 4px 0}.power-spinner-controls .spinner-button,.time-spinner-controls .spinner-button,.days-spinner-controls .spinner-button,.minutes-spinner-controls .spinner-button{flex:1;height:36px;background-color:#ebf4ff;border:1px solid #BEE3F8;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:18px;transition:background-color .2s,transform .1s}.power-spinner-controls .spinner-button:hover,.time-spinner-controls .spinner-button:hover,.days-spinner-controls .spinner-button:hover,.minutes-spinner-controls .spinner-button:hover{background-color:#d6e4ff}.power-spinner-controls .spinner-button:active,.time-spinner-controls .spinner-button:active,.days-spinner-controls .spinner-button:active,.minutes-spinner-controls .spinner-button:active{transform:scale(.95)}.toast{position:fixed;bottom:60px;left:50%;transform:translate(-50%);background-color:#4a5568;color:#fff;padding:10px 20px;border-radius:8px;font-size:14px;opacity:0;transition:opacity .3s ease-in-out;z-index:9999;box-shadow:0 2px 10px #0003;pointer-events:none}.toast.show{opacity:1}.basefee-toggle{display:flex;align-items:center;margin:16px 0}.basefee-toggle label{font-size:14px;color:#4a5568;cursor:pointer;margin-bottom:20px}.basefee-toggle input[type=checkbox]{width:16px;height:16px;margin-right:8px;cursor:pointer;accent-color:#4299E1}.domain-text{text-align:center;font-size:14px;color:#4a5568;margin-top:12px}.spinner-button,.quick-button{touch-action:manipulation;-webkit-tap-highlight-color:transparent;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;transition:all .1s ease;outline:none}.spinner-button:active,.quick-button:active{background-color:#bee3f8!important;transform:scale(.95)}.spinner-button:focus,.quick-button:focus{background-color:#ebf4ff;transform:none;outline:none}.spinner-button:focus-visible,.quick-button:focus-visible{background-color:#ebf4ff;transform:none;outline:none}@media (hover: none){.spinner-button:active,.quick-button:active{background-color:#bee3f8!important;transform:scale(.95)}.spinner-button:not(:active),.quick-button:not(:active){background-color:#ebf4ff;transform:none}}@media (hover: hover){.spinner-button:hover:not(:active),.quick-button:hover:not(:active){background-color:#d6e4ff;transform:none}}.spinner-button:active,.quick-button:active{background-color:#bee3f8;transform:scale(.95);-webkit-transform:scale(.95)}.spinner-button,.quick-button{background-color:#ebf4ff;transform:none;-webkit-transform:none;-webkit-tap-highlight-color:transparent;user-select:none;-webkit-user-select:none}@media (hover: none){.spinner-button,.quick-button{-webkit-touch-callout:none;touch-action:manipulation;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.spinner-button:not(:active),.quick-button:not(:active){background-color:#ebf4ff;transform:none;-webkit-transform:none}}.spinner-button,.quick-button{-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;touch-action:manipulation;background-color:#ebf4ff;transition:background-color .1s ease-out,transform .1s ease-out;will-change:background-color,transform}.spinner-button:active,.quick-button:active{background-color:#bee3f8;transform:scale(.95)}@media (hover: none){.spinner-button,.quick-button{touch-action:manipulation}.spinner-button:not(:active),.quick-button:not(:active){background-color:#ebf4ff!important;transform:none!important}}@media (hover: hover){.spinner-button:hover:not(:active),.quick-button:hover:not(:active){background-color:#d6e4ff}}.spinner-button,.quick-button{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:rgba(0,0,0,0)}.spinner-button:focus,.quick-button:focus{outline:none}.title,.section-title,.results-title,.results-value,.results-detail-label,.results-detail-value,.domain-text,.accordion-header,.chart-label,.unit-field{user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.results-value,.results-detail-value,.results-detail-label span{user-select:text;-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text}.results-card,.results-card *{user-select:text!important;-webkit-user-select:text!important;-moz-user-select:text!important;-ms-user-select:text!important}.install-prompt{background-color:#ebf4ff;border:1px solid #BEE3F8;border-radius:8px;padding:16px;margin-bottom:20px;animation:fadeIn .3s ease-out}.install-prompt-content{text-align:center}.install-prompt-content p{color:#2d3748;margin-bottom:12px;font-size:14px}.install-prompt-buttons{display:flex;gap:8px;justify-content:center}.install-button{background-color:#4299e1;color:#fff;border:none;padding:8px 16px;border-radius:4px;font-size:14px;cursor:pointer;transition:background-color .2s}.install-button:hover{background-color:#3182ce}.install-dismiss{background-color:transparent;color:#4a5568;border:1px solid #CBD5E0;padding:8px 16px;border-radius:4px;font-size:14px;cursor:pointer;transition:background-color .2s}.install-dismiss:hover{background-color:#f7fafc}.ios-install-steps{text-align:left;margin:10px 0;padding-left:20px;font-size:14px;color:#2d3748}.ios-install-steps li{margin-bottom:8px;line-height:1.5}.ios-icon{display:inline-block;margin:0 4px;vertical-align:middle}.footer-nav-link{display:block;text-align:center;color:#3182ce;font-size:14px;margin-top:8px;text-decoration:none}.footer-nav-link:hover{text-decoration:underline}#root{max-width:100%;margin:0;padding:0;text-align:center;width:100%;height:100%}.app-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background-color:#f5f7fa;box-sizing:border-box}