/* SmartClimate brand (brand/SmartClimate-Brand-Guidelines.pdf, colours from brand/colours.json).
   Plum is the main ground; on paper and white, ink body text, blue links and accents, green for large headings only.
   Light blue and light green only on plum. 3px corners; no shadows or gradients. */
:root{--plum:#2E1330;--blue:#0B6F94;--green:#2E8B4F;--blue-lt:#6FC2DE;--green-lt:#6FBE7A;--paper:#F5F7F8;--ink:#14181C;--rule:#8A949E;
  --sans:'Archivo',system-ui,-apple-system,'Segoe UI',sans-serif;--mono:'IBM Plex Mono',ui-monospace,'Cascadia Mono',Consolas,monospace;
  font-family:var(--sans);color:var(--ink);background:var(--paper);font-size:16px;line-height:1.6}
*{box-sizing:border-box}body{margin:0;background:var(--paper)}
/* Embedded in the website page (?embed): the site supplies the header, company details and title. */
.embed body>header,.embed footer .legal{display:none}
header{background:var(--plum);color:var(--paper);padding:36px max(5vw,24px) 44px}
.header-inner{max-width:1280px;margin:auto}.lockup{display:block;height:44px;width:auto}
.strapline{color:var(--green-lt);font-weight:500;margin:18px 0 0}
h1,h2,h3{font-weight:600;line-height:1.15}
h1{font-size:3.25rem;letter-spacing:-.015em;font-stretch:108%;max-width:22ch;margin:10px 0 14px}
header p{color:var(--paper);max-width:62ch}
.eyebrow{display:block;font-size:.8125rem;font-weight:500;color:var(--blue)}
main{max-width:1280px;margin:auto;padding:28px 22px}
section{background:#fff;border:1px solid var(--rule);border-radius:4px;padding:28px;margin:24px 0}
h2{font-size:2.25rem;letter-spacing:-.012em;font-stretch:105%;margin:6px 0 16px}
h3{font-size:1.5rem;letter-spacing:-.008em;margin:28px 0 10px}
p,li{max-width:75ch}
a{color:var(--blue)}
.notice{border-left:3px solid var(--blue);background:#fff;padding:18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:22px;margin:24px 0}
label{display:flex;flex-direction:column;gap:8px;font-size:.9rem;font-weight:500}
input,select{width:100%;min-height:44px;border:1px solid var(--rule);border-radius:3px;background:#fff;color:var(--ink);padding:10px;font:inherit}
input[type=file]{font-size:.8rem}
fieldset{border:1px solid var(--rule);border-radius:4px;padding:16px 20px;margin:18px 0}legend{font-weight:600;padding:0 6px}
button{background:var(--paper);color:var(--plum);border:1px solid var(--plum);border-radius:3px;padding:11px 18px;font:inherit;font-size:.95rem;font-weight:600;cursor:pointer}
button:hover{background:#fff}
/* Primary actions: light green with plum text, followed by an arrow. */
#builtin,#run,#sizing-run,#tariff-run,#report-build,#report-print{background:var(--green-lt);border-color:var(--green-lt);color:var(--plum);font-size:1.0625rem}
#builtin::after,#run::after,#sizing-run::after,#tariff-run::after,#report-build::after,#report-print::after{content:' →'}
#builtin:hover,#run:hover,#sizing-run:hover,#tariff-run:hover,#report-build:hover,#report-print:hover{text-decoration:underline}
button:disabled{opacity:.45;cursor:default}
button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.section-head{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.buttons{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0}
.muted{color:var(--ink);font-size:.9rem}
#error,#storage-error,#report-error{color:#B3261E;font-weight:600}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin:16px 0}
.card{background:var(--paper);border:1px solid var(--rule);padding:18px 20px;border-radius:3px}
.card span{font-size:.85rem}
.card strong{display:block;font-family:var(--mono);font-weight:500;font-size:1.6rem;margin-top:10px;font-variant-numeric:tabular-nums;color:var(--plum)}
.warnings{background:var(--paper);border-left:3px solid var(--blue);padding:16px 20px 16px 36px}
.table-wrap{overflow:auto;max-height:520px;border:1px solid var(--rule);border-radius:3px}
table{border-collapse:collapse;width:100%;font-size:.85rem;text-align:left;font-variant-numeric:tabular-nums}
th{font-family:var(--mono);font-weight:500;font-size:.6875rem;text-transform:uppercase;letter-spacing:.12em;color:var(--blue);background:#fff;position:sticky;top:0;white-space:nowrap;border-bottom:1px solid var(--ink)}
td,th{padding:10px 12px}td{border-bottom:1px solid var(--rule);white-space:nowrap}
tr:nth-child(even) td{background:var(--paper)}
.formula{background:var(--plum);color:var(--paper);border-radius:4px;padding:20px;line-height:1.9}
pre{font:.84rem/1.8 var(--mono);background:var(--paper);border:1px solid var(--rule);border-radius:3px;padding:18px;white-space:pre-wrap;overflow-wrap:anywhere}
.filters{display:flex;gap:14px;align-items:end;flex-wrap:wrap;margin:20px 0}.filters label{min-width:200px}
footer{color:var(--ink);font-size:.85rem;line-height:1.7;padding:20px 0 35px;border-top:1px solid var(--green);margin-top:12px}
footer .legal{margin:12px 0 0;font-weight:600;color:var(--ink)}
[hidden]{display:none!important}select{min-width:0;max-width:100%}.grid>label{min-width:0}
summary{cursor:pointer;font-weight:600;padding:12px 0}
input:disabled,select:disabled{background:var(--paper);opacity:.7}
@media(max-width:860px){h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.2rem}section{padding:20px}main{padding:18px 12px}header{padding:28px 20px 32px}button{width:100%}.filters button{width:auto}.lockup{height:36px}}

/* Customer report: letterhead style (white page, light lockup, contact block, rule hairline; green hairline above the legal footer). */
.letterhead{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-bottom:16px;border-bottom:1px solid var(--rule);margin-bottom:24px}
.letterhead img{height:46px;width:auto}
.letterhead address{font-style:normal;font-weight:700;font-size:.8rem;line-height:1.5;text-align:right;color:var(--ink)}
.letterhead address b{font-weight:700;color:var(--blue);letter-spacing:.12em;font-size:.7rem;margin-right:6px}
.report-head h2{color:var(--plum);margin:0 0 4px}
#report h3{color:var(--green)}
#report td,#report th{white-space:normal;overflow-wrap:anywhere}
.report-list{display:grid;grid-template-columns:minmax(160px,28%) 1fr;gap:6px 18px;margin:0}.report-list dt{font-weight:600}.report-list dd{margin:0}
.report-foot{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--green);margin-top:28px;padding-top:10px;font-size:.75rem;font-weight:700}
.report-foot .strap{color:var(--blue);white-space:nowrap}
/* Battery sizing curve (dist/sizing-chart.js), on white with a rule border. */
.sizing-chart{background:#fff;border:1px solid var(--rule);border-radius:3px;padding:12px 14px 2px;margin:8px 0 18px;max-width:820px}
.sizing-plot{overflow-x:auto}.sizing-chart svg{display:block;font-family:var(--sans);min-width:520px}.sizing-chart p{font-size:.85rem}
@media print{
  .sizing-chart{break-inside:avoid;max-width:none}.sizing-chart svg{min-width:0}
  @page{size:A4;margin:14mm}
  body,section{background:#fff}header,footer,main>*:not(#report-section){display:none!important}
  main{padding:0;max-width:none}#report-section{display:block!important;border:none;padding:0;margin:0}
  #report-section table{font-size:.75rem}#report-section td,#report-section th{padding:5px 8px}
  #report-section h3{font-size:1.15rem;break-after:avoid}#report-section table,#report-section dl,.cards{break-inside:avoid}
  #report-section .card strong{font-size:1.2rem}#report-section li,#report-section dd,#report-section dt{font-size:.85rem}
  *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}

/* Simple first screen, on plum: paper text, light blue and light green accents, rule for muted text. */
section.plum{background:var(--plum);color:var(--paper);border:none}
.plum h2,.plum h3,.plum h4{color:var(--paper)}.plum .eyebrow{color:var(--blue-lt)}.plum .hint{color:var(--rule);font-size:.9rem}
.plum label{color:var(--paper)}
.question{border-top:1px solid var(--rule);padding:22px 0 8px;margin-top:18px}.question h3{margin:0 0 6px;font-size:1.35rem}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin:14px 0}
.tile{display:flex;flex-direction:column;align-items:flex-start;gap:6px;text-align:left;background:transparent;color:var(--paper);border:1px solid var(--rule);border-radius:3px;padding:16px;min-height:132px;font-weight:400}
.tile:hover{background:rgba(245,247,248,.04);text-decoration:none}
.tile strong{font-size:1.05rem;font-weight:600}.tile span{color:var(--rule);font-size:.85rem}
.tile[aria-pressed=true]{border-color:var(--blue-lt);box-shadow:inset 0 0 0 1px var(--blue-lt)}
.tile[aria-pressed=true] strong{color:var(--blue-lt)}
.tile-icon{width:40px;height:40px;color:var(--blue-lt)}
.heatloss{display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin:12px 0}
.heatloss input[type=range],.pv-size input[type=range]{flex:1;min-width:220px;accent-color:var(--green-lt)}
input[type=range]{min-height:auto;padding:0;border:none;background:transparent}
.big-number{flex-direction:row;align-items:baseline;gap:8px}
.big-number input{width:7.5rem;font-family:var(--mono);font-size:1.6rem;font-variant-numeric:tabular-nums;background:transparent;color:var(--paper);border:1px solid var(--rule)}
.big-number span{font-family:var(--mono);font-size:1.1rem;color:var(--blue-lt)}
.gas-helper{margin:4px 0 8px}.gas-helper summary{color:var(--blue-lt)}.gas-helper input{max-width:16rem;background:transparent;color:var(--paper)}
.pv-detail{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:28px;margin-top:12px}.pv-detail h4{margin:0 0 10px;font-size:1.1rem}
.compass{position:relative;width:260px;height:260px;border:1px solid var(--rule);border-radius:50%;margin:6px 0}
.compass-point{position:absolute;transform:translate(-50%,-50%);width:48px;height:48px;padding:0;border-radius:50%;background:var(--plum);color:var(--paper);border:1px solid var(--rule);font-family:var(--mono);font-size:.85rem;font-weight:500}
.compass-point[aria-pressed=true]{background:var(--green-lt);border-color:var(--green-lt);color:var(--plum)}
.compass-centre{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:none}
.compass-centre strong{font-size:1.15rem;color:var(--blue-lt)}.compass-centre span{color:var(--rule);font-size:.8rem}
#simple-run{margin-top:22px;background:var(--green-lt);border-color:var(--green-lt);color:var(--plum);font-size:1.0625rem}#simple-run::after{content:' →'}
#simple-error{color:#F2B8B5;font-weight:600}
#simple-report{background:var(--green-lt);border-color:var(--green-lt);color:var(--plum)}#simple-report::after{content:' →'}
#simple-results table td{white-space:normal}#simple-results table td:last-child{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums}
#advanced>summary{font-size:1.15rem;font-weight:600;padding:18px 0;color:var(--plum)}
/* Advanced panels under each question, and controls moved onto plum. */
.q-advanced{margin:10px 0 4px;border-left:1px solid var(--rule);padding-left:16px}
.q-advanced>summary{color:var(--blue-lt);font-weight:500}
.q-advanced ul{color:var(--paper);font-size:.9rem;padding-left:18px}.q-advanced li{margin:4px 0}
.plum fieldset{border-color:var(--rule)}.plum legend{color:var(--paper)}
.plum p,.plum .muted{color:var(--rule)}.plum .question>p.hint{color:var(--rule)}
.plum .ev-summary{color:var(--blue-lt);font-weight:500}
.plum input,.plum select{background:#fff;color:var(--ink)}
.plum .big-number input{background:transparent;color:var(--paper)}
.plum button:not(.tile):not(.compass-point):not(#simple-run){background:transparent;color:var(--paper);border-color:var(--rule)}
.cars{margin:8px 0 4px}
.question h4{margin:18px 0 0;font-size:1.1rem;color:var(--paper)}
.plum>p{color:var(--paper)}
/* Appliance inventory */
.inventory{margin-top:18px}.inventory h4{margin:14px 0 4px;font-size:1.1rem}
label.have{flex-direction:row;align-items:center;gap:10px;font-weight:600;margin:4px 0 6px}
label.have input{width:20px;height:20px;min-height:0;accent-color:var(--green-lt)}
.add-device{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap;margin:6px 0 14px}.add-device label{min-width:220px}
.plum .inventory h4{color:var(--paper)}
.tariff-choice tr.chosen td{font-weight:700;background:var(--paper)}.tariff-choice button{padding:6px 12px;font-size:.85rem}
#simple-time{margin-top:8px}
/* Solar arrays on the simple screen: one card per roof face. */
.pv-detail{display:block}
.pv-array{border:1px solid var(--rule);border-radius:3px;padding:16px 18px;margin:14px 0}
.pv-array-head{display:flex;justify-content:space-between;align-items:center;gap:12px}.pv-array-head h4{margin:0;font-size:1.15rem;color:var(--blue-lt)}
.pv-array-body{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;margin-top:10px}
.pv-array h5{margin:0 0 10px;font-size:1rem;color:var(--paper)}
.pv-array .pv-size label:not(.big-number){margin-top:12px}
.add-array{margin:4px 0 8px}
.tariff-choice th,.tariff-choice td{white-space:normal}.tariff-choice th{position:static}