:root{--primary-color: #1a365d;--secondary-color: #2b6cb0;--accent-color: #4299e1;--success-color: #38a169;--warning-color: #d69e2e;--error-color: #e53e3e;--text-color: #2d3748;--text-light: #718096;--bg-color: #ffffff;--bg-secondary: #f7fafc;--border-color: #e2e8f0;--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px 0 rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05)}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;overflow-x:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;color:var(--text-color);background-color:var(--bg-secondary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;max-width:100vw}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{color:var(--primary-color);font-weight:600;line-height:1.3}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}h4{font-size:1.125rem}a{color:var(--secondary-color);text-decoration:none}a:hover{text-decoration:underline}input,select,textarea{font-family:inherit;font-size:1rem;padding:.5rem .75rem;border:1px solid var(--border-color);border-radius:.375rem;background-color:var(--bg-color);color:var(--text-color);width:100%;transition:border-color .15s,box-shadow .15s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 3px #4299e133}input:disabled,select:disabled,textarea:disabled{background-color:var(--bg-secondary);cursor:not-allowed}label{display:block;font-size:.875rem;font-weight:500;margin-bottom:.25rem;color:var(--text-color)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;font-size:.875rem;font-weight:500;border-radius:.375rem;border:none;cursor:pointer;transition:all .15s;text-decoration:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--secondary-color);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-color)}.btn-secondary{background-color:var(--bg-secondary);color:var(--text-color);border:1px solid var(--border-color)}.btn-secondary:hover:not(:disabled){background-color:var(--border-color)}.btn-danger{background-color:var(--error-color);color:#fff}.btn-danger:hover:not(:disabled){background-color:#c53030}.btn-lg{padding:.75rem 1.5rem;font-size:1rem}.card{background-color:var(--bg-color);border-radius:.5rem;box-shadow:var(--shadow);padding:1.5rem}@media(max-width:480px){.card{padding:1rem;border-radius:.375rem}}.container{max-width:min(1200px,100%);margin:0 auto;padding:0 1rem;box-sizing:border-box}@media(max-width:480px){.container{padding:0 .5rem}}.text-center{text-align:center}.text-right{text-align:right}.text-light{color:var(--text-light)}.text-error{color:var(--error-color)}.text-success{color:var(--success-color)}.mt-1{margin-top:.25rem}.mt-2{margin-top:.5rem}.mt-3{margin-top:.75rem}.mt-4{margin-top:1rem}.mb-1{margin-bottom:.25rem}.mb-2{margin-bottom:.5rem}.mb-3{margin-bottom:.75rem}.mb-4{margin-bottom:1rem}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-2{gap:.5rem}.gap-3{gap:.75rem}.gap-4{gap:1rem}.form-group{margin-bottom:1rem}.form-error{color:var(--error-color);font-size:.875rem;margin-top:.25rem}.radio-card{display:flex;align-items:flex-start;padding:1rem;border:2px solid var(--border-color);border-radius:.5rem;cursor:pointer;transition:border-color .15s,background-color .15s}.radio-card:hover{border-color:var(--accent-color)}.radio-card.selected{border-color:var(--secondary-color);background-color:#2b6cb00d}.radio-card input[type=radio]{width:auto;margin-right:.75rem;margin-top:.25rem}.radio-card-content{flex:1}.radio-card-title{font-weight:500;margin-bottom:.25rem}.radio-card-description{font-size:.875rem;color:var(--text-light)}.stepper{display:flex;justify-content:center;margin-bottom:2rem;padding:.5rem 1rem;overflow-x:auto;-webkit-overflow-scrolling:touch}.stepper-step{display:flex;align-items:center;flex-shrink:0}.stepper-step:after{content:"";width:3rem;height:2px;background-color:var(--border-color);margin:0 .5rem}.stepper-step:last-child:after{display:none}.stepper-circle{width:2rem;height:2rem;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.875rem;font-weight:500;background-color:var(--border-color);color:var(--text-light)}.stepper-step.active .stepper-circle{background-color:var(--secondary-color);color:#fff}.stepper-step.completed .stepper-circle{background-color:var(--success-color);color:#fff}.stepper-step.completed:after{background-color:var(--success-color)}.stepper-step.clickable{cursor:pointer}.stepper-step.clickable:hover .stepper-circle{transform:scale(1.1);box-shadow:0 2px 8px #00000026}.stepper-step.clickable:focus{outline:none}.stepper-step.clickable:focus .stepper-circle{box-shadow:0 0 0 3px rgba(var(--primary-color-rgb, 45, 95, 137),.3)}.stepper-circle{transition:transform .2s,box-shadow .2s}.stepper-label{display:none}@media(max-width:480px){.stepper{padding:.5rem}.stepper-step:after{width:1.5rem;margin:0 .25rem}.stepper-circle{width:1.5rem;height:1.5rem;font-size:.7rem}}@media(min-width:768px){.stepper-label{display:block;margin-left:.5rem;font-size:.875rem;color:var(--text-light)}.stepper-step.active .stepper-label{color:var(--secondary-color);font-weight:500}}.calendar{border:1px solid var(--border-color);border-radius:.5rem;overflow:hidden;width:100%}.calendar-header{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;background-color:var(--primary-color);color:#fff}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr)}.calendar-day-header{padding:.5rem;text-align:center;font-size:.75rem;font-weight:500;color:var(--text-light);background-color:var(--bg-secondary);border-bottom:1px solid var(--border-color)}.calendar-day{padding:.5rem .25rem;text-align:center;border:1px solid var(--border-color);border-top:none;border-left:none;min-height:3.5rem;cursor:pointer;transition:background-color .15s}.calendar-day:hover{background-color:var(--bg-secondary)}.calendar-day.empty{background-color:var(--bg-secondary);cursor:default}.calendar-day.has-hours{background-color:#38a1691a}.calendar-day.weekend,.calendar-day.holiday{background-color:#e53e3e0d}.calendar-day.weekend.has-hours,.calendar-day.holiday.has-hours{background-color:#e53e3e1a}.calendar-day.weekend .calendar-day-number,.calendar-day.holiday .calendar-day-number{color:var(--error-color);font-weight:500}.calendar-day-number{font-size:.75rem;color:var(--text-light)}.calendar-day-hours{font-size:.875rem;font-weight:500;color:var(--success-color)}@media(max-width:480px){.calendar-header{padding:.5rem;font-size:.875rem}.calendar-day-header{padding:.25rem 0;font-size:.6rem}.calendar-day{padding:.125rem;min-height:2.5rem}.calendar-day-number{font-size:.6rem}.calendar-day-hours{font-size:.65rem}}.modal-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background-color:var(--bg-color);border-radius:.5rem;box-shadow:var(--shadow-lg);max-width:500px;width:90%;max-height:90vh;overflow-y:auto}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;border-bottom:1px solid var(--border-color)}.modal-title{font-size:1.125rem;font-weight:600}.modal-close{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-light)}.modal-body{padding:1.5rem}.modal-footer{display:flex;justify-content:flex-end;gap:.75rem;padding:1rem 1.5rem;border-top:1px solid var(--border-color)}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:.75rem;text-align:left;border-bottom:1px solid var(--border-color)}.table th{font-weight:500;color:var(--text-light);font-size:.875rem;background-color:var(--bg-secondary)}.table tbody tr:hover{background-color:var(--bg-secondary)}.spinner{width:2rem;height:2rem;border:3px solid var(--border-color);border-top-color:var(--secondary-color);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-overlay{display:flex;align-items:center;justify-content:center;padding:3rem}.tabs{display:flex;border-bottom:1px solid var(--border-color);margin-bottom:1rem;overflow-x:auto}.tab{padding:.75rem 1rem;font-size:.875rem;font-weight:500;color:var(--text-light);background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;white-space:nowrap;transition:color .15s,border-color .15s}.tab:hover{color:var(--text-color)}.tab.active{color:var(--secondary-color);border-bottom-color:var(--secondary-color)}.alert{padding:1rem;border-radius:.375rem;margin-bottom:1rem}.alert-error{background-color:#e53e3e1a;border:1px solid var(--error-color);color:var(--error-color)}.alert-success{background-color:#38a1691a;border:1px solid var(--success-color);color:var(--success-color)}.alert-warning{background-color:#d69e2e1a;border:1px solid var(--warning-color);color:#744210}.eligibility-check{padding:1rem 0}.eligibility-header{text-align:center;margin-bottom:2rem;padding-bottom:1rem;border-bottom:1px solid var(--border-color)}.eligibility-header h2{color:var(--warning-color);margin-bottom:.5rem}.eligibility-header p{color:var(--text-light);margin:0}.eligibility-step{margin-top:1.5rem}.step-header{margin-bottom:1.5rem}.step-indicator{display:inline-block;font-size:.75rem;font-weight:600;color:var(--primary-color);background:#3498db1a;padding:.25rem .75rem;border-radius:12px;margin-bottom:.5rem}.step-header h3{margin:.5rem 0}.step-description{color:var(--text-light);font-size:.9rem;margin-top:.25rem}.completed-steps{font-size:.875rem;color:var(--success-color);margin-bottom:1rem}.completed-check{color:var(--success-color);font-weight:700}.eligibility-options{display:flex;flex-direction:column;gap:.75rem}.eligibility-option{display:block;width:100%;padding:1rem 1.25rem;text-align:left;background:#fff;border:2px solid var(--border-color);border-radius:8px;cursor:pointer;transition:all .2s}.eligibility-option:hover{border-color:var(--primary-color);background:#3498db0d}.eligibility-option--warning:hover{border-color:var(--warning-color);background:#d69e2e0d}.option-content strong{display:block;margin-bottom:.25rem;color:var(--text-color)}.option-content p{margin:0;font-size:.875rem;color:var(--text-light)}.hmrc-guidance{margin-top:1.5rem;padding:1rem;background:var(--bg-secondary);border-radius:8px;border-left:4px solid var(--primary-color)}.hmrc-guidance h4{margin:0 0 .5rem;font-size:.8rem;text-transform:uppercase;color:var(--text-light);letter-spacing:.5px}.hmrc-guidance blockquote{margin:0;font-style:italic;font-size:.9rem;color:var(--text-light)}.hmrc-guidance cite{display:block;margin-top:.5rem;font-style:normal;font-size:.8rem;color:var(--primary-color)}.eligibility-result{text-align:center;padding:1rem 0}.result-icon{font-size:3rem;margin-bottom:1rem}.eligibility-result h3{margin-bottom:1rem}.eligibility-result--passed h3{color:var(--success-color)}.eligibility-result--failed h3{color:var(--error-color)}.eligibility-summary{text-align:left;background:var(--bg-secondary);padding:1rem;border-radius:8px;margin:1rem 0;line-height:1.8}.disqualification-reason{background:#e53e3e1a;border:1px solid var(--error-color);padding:1rem;border-radius:8px;margin-bottom:1rem;text-align:left}.disqualification-explanation{text-align:left;color:var(--text-light);margin-bottom:1rem}.hmrc-reference{font-size:.875rem;color:var(--text-light);margin-bottom:1.5rem}.alternative-options{text-align:left;background:var(--bg-secondary);padding:1rem;border-radius:8px;margin-bottom:1.5rem}.alternative-options h4{margin:0 0 .75rem}.alternative-options ul{margin:0;padding-left:1.25rem}.alternative-options li{margin-bottom:.5rem}.link-button{background:none;border:none;color:var(--primary-color);text-decoration:underline;cursor:pointer;padding:0;font-size:inherit}.what-you-can-claim{text-align:left;margin:1.5rem 0}.what-you-can-claim h4{margin-bottom:1rem}.claim-columns{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.claim-column{padding:1rem;border-radius:8px}.claim-column h5{margin:0 0 .5rem;font-size:.9rem}.claim-column--allowed{background:#38a1691a;border:1px solid var(--success-color)}.claim-column--not-allowed{background:#e53e3e1a;border:1px solid var(--error-color)}.claim-column ul{margin:0;padding-left:1.25rem;font-size:.875rem}.claim-column li{margin-bottom:.25rem}.claim-tip{background:#3498db1a;border:1px solid var(--primary-color);padding:.75rem 1rem;border-radius:8px;font-size:.875rem;margin-top:1rem}.eligibility-actions{display:flex;justify-content:space-between;margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--border-color)}.eligibility-nav{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border-color)}.additional-costs-calculator{padding:.5rem 0}.additional-costs-calculator h2{margin-bottom:.5rem}.calculator-intro{color:var(--text-light);margin-bottom:1.5rem}.calculator-section{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;padding:1.5rem;margin-bottom:1.5rem}.calculator-section h3{margin:0 0 .5rem;font-size:1.1rem}.calculator-section>p{color:var(--text-light);font-size:.9rem;margin-bottom:1rem}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-bottom:1rem}.form-hint{display:block;font-size:.75rem;color:var(--text-light);margin-top:.25rem}.equipment-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.75rem;margin-bottom:1rem}.equipment-item{background:#fff;border:2px solid var(--border-color);border-radius:8px;padding:.75rem;transition:all .2s}.equipment-item--selected{border-color:var(--primary-color);background:#3498db0d}.equipment-item--custom{border-style:dashed}.equipment-checkbox{display:flex;align-items:center;gap:.5rem;cursor:pointer}.equipment-checkbox input{width:auto;margin:0}.equipment-name{font-weight:500}.equipment-details{margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--border-color);display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}.equipment-power label,.equipment-hours label{display:flex;align-items:center;gap:.25rem;font-size:.8rem;color:var(--text-light)}.equipment-power input,.equipment-hours input{width:60px;padding:.25rem .5rem;font-size:.8rem}.equipment-remove{background:none;border:none;color:var(--error-color);font-size:1.25rem;cursor:pointer;padding:0 .25rem;margin-left:auto}.btn-add-custom{margin-top:.5rem}.add-custom-form{background:#fff;border:2px dashed var(--border-color);border-radius:8px;padding:1rem;margin-top:1rem}.add-custom-form h4{margin:0 0 1rem;font-size:1rem}.form-actions{display:flex;gap:.5rem;justify-content:flex-end;margin-top:1rem}.calculation-summary{background:#fff;border:1px solid var(--border-color);border-radius:8px;padding:1rem;margin-top:1rem}.calculation-summary h4{margin:0 0 .5rem;font-size:.9rem;color:var(--text-light)}.summary-table{width:100%;border-collapse:collapse}.summary-table td{padding:.5rem 0}.summary-table td:last-child{text-align:right;font-weight:500}.summary-subtotal td{border-top:1px solid var(--border-color);font-weight:500}.summary-total td{border-top:2px solid var(--text-color);font-weight:700;font-size:1.1rem}.radio-group{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1rem}.radio-option{display:flex;align-items:center;gap:.5rem;cursor:pointer}.radio-option input{width:auto;margin:0}.info-box{padding:1rem;border-radius:8px;margin-top:1rem}.info-box--warning{background:#d69e2e1a;border:1px solid var(--warning-color)}.heating-details{margin-top:1rem}.calculator-summary-section{background:#fff}.summary-table--final .summary-total td{color:var(--primary-color)}.flat-rate-comparison{margin-top:1.5rem}.comparison-box{padding:1.5rem;border-radius:8px;text-align:center}.comparison-box h4{margin:0 0 1rem}.comparison-box--warning{background:#d69e2e1a;border:2px solid var(--warning-color)}.comparison-box--success{background:#38a1691a;border:2px solid var(--success-color)}.comparison-table{width:auto;margin:0 auto 1rem;text-align:left}.comparison-difference td{font-weight:700;color:var(--success-color)}.comparison-note{font-size:.875rem;color:var(--text-light);margin-top:.5rem}.calculator-actions{display:flex;justify-content:space-between;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border-color)}.badge{display:inline-block;padding:.25rem .5rem;font-size:.75rem;font-weight:600;border-radius:4px}.badge-success{background:var(--success-color);color:#fff}@media(max-width:600px){.claim-columns,.equipment-grid{grid-template-columns:1fr}.eligibility-actions,.calculator-actions{flex-direction:column;gap:.75rem}.eligibility-actions .btn,.calculator-actions .btn{width:100%}}.eim-info-note{background:#3498db1a;border-left:4px solid var(--primary-color);padding:1rem 1.25rem;border-radius:0 8px 8px 0}.eim-info-note h3{margin:0 0 .75rem;font-size:1rem;color:var(--primary-color)}.eim-info-note p{margin:0 0 .75rem;font-size:.9rem;line-height:1.5}.eim-info-note p:last-child{margin-bottom:0}.eim-actions{margin-top:1rem;padding-top:1rem;border-top:1px solid rgba(52,152,219,.2)}.eim-flat-rate-note{background:#38a1691a;padding:.75rem;border-radius:6px;border:1px solid var(--success-color)}.suggested-periods{margin-bottom:1.5rem;padding:1rem;background:var(--bg-secondary);border-radius:8px}.suggested-periods-label{margin:0 0 .75rem;font-size:.875rem;color:var(--text-light);font-weight:500}.suggested-periods-buttons{display:flex;flex-wrap:wrap;gap:.5rem}.btn-suggested-period{background:#fff;border:1px solid var(--border-color);color:var(--text-color);padding:.5rem 1rem;font-size:.875rem;border-radius:6px;cursor:pointer;transition:all .15s ease}.btn-suggested-period:hover{border-color:var(--primary-color);color:var(--primary-color);background:#3498db0d}.btn-suggested-period:active{transform:scale(.98)}@media(max-width:600px){.suggested-periods-buttons{flex-direction:column}.btn-suggested-period{width:100%;text-align:left}}