:root{
  --ink:#203d39;
  --muted:#7b8981;
  --line:#e0e6df;
  --soft:#f6f7f3;
  --card:#fff;
  --brand:#146c60;
  --pad:12px;
  --radius:12px;
  --tap:42px;
  font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--soft);
  font-synthesis:none;
  line-height:1.4;
}
*{box-sizing:border-box}
body{margin:0}
main{max-width:920px;margin:auto;padding:16px 16px 28px}
header,.section-title,.section-title>div,.family-head,.actions{display:flex;align-items:center;justify-content:space-between;gap:10px}
.brand{
  text-decoration:none;color:inherit;font-size:18px;font-weight:750;letter-spacing:-.5px;
  display:flex;align-items:center;gap:8px;min-width:0;flex:1;
}
.brand small{
  display:block;font-size:8px;letter-spacing:.8px;color:var(--muted);
  text-transform:uppercase;line-height:1.2;font-weight:700;
}
.brand-text{display:flex;flex-direction:column;gap:1px;min-width:0}
.logo{background:var(--brand);color:#fff;border-radius:10px;padding:2px 8px;font-size:22px;line-height:1.2;flex-shrink:0}
.badge{font-size:10px;border:1px solid #d5dfd7;padding:5px 9px;border-radius:999px;white-space:nowrap;flex-shrink:0}
.intro{padding:18px 0 12px;max-width:560px}
.eyebrow{font-size:10px;letter-spacing:1.6px;font-weight:750;color:var(--brand)}
h1{font-size:clamp(26px,7vw,40px);line-height:1.1;letter-spacing:-1.4px;margin:8px 0 6px}
p{margin:8px 0}
.intro p{color:#6a7974;font-size:13px;margin:0;max-width:480px}
.session,.household-banner{
  border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;font-size:11px;
  display:flex;gap:8px;align-items:center;justify-content:space-between;flex-wrap:wrap;
}
.session{background:#e9f0e7;margin:0 0 8px}
.household-banner{background:var(--card);margin:0 0 14px;box-shadow:0 1px 6px #163d2908}
#save-status{color:#62766a}
#household-status{color:#385149;font-weight:650;overflow-wrap:anywhere;flex:1;min-width:140px}
.household-actions{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:14px;margin:12px 0;box-shadow:0 2px 12px #163d290c;
}
.section-title{margin-bottom:12px;gap:8px}
h2{font-size:16px;letter-spacing:-.3px;margin:0}
h3{font-size:13px;margin:8px 0}
.step{font-size:10px;background:#edf3ec;color:#467568;padding:4px 7px;border-radius:6px;font-weight:700}
.grid{display:grid;gap:10px}
.three{grid-template-columns:repeat(3,1fr)}
label{display:flex;flex-direction:column;gap:4px;font-size:11px;font-weight:650;color:#385149}
label span{color:var(--muted);font-size:10px;font-weight:400}
input,select{
  font:inherit;font-size:14px;width:100%;min-width:0;
  border:1px solid #d9e1d9;border-radius:8px;padding:10px 12px;
  background:#fbfcfa;color:var(--ink);min-height:var(--tap);
}
input:focus,select:focus{outline:2px solid #70b4a3;outline-offset:1px}
.field{display:flex;flex-direction:column;gap:4px;min-width:0}
.field-label{font-size:11px;font-weight:650;color:#385149;display:flex;flex-direction:column;gap:2px}
.field-label>span{color:var(--muted);font-size:10px;font-weight:400}
.field-gas-rule{grid-column:span 1}
.dropdown{position:relative;width:100%;min-width:0}
.dropdown-btn{
  width:100%;min-height:var(--tap);display:flex;align-items:center;justify-content:space-between;gap:10px;
  border:1px solid #d9e1d9;border-radius:8px;padding:10px 12px;background:#fbfcfa;color:var(--ink);
  font:inherit;font-size:14px;font-weight:500;text-align:left;cursor:pointer;
}
.dropdown-btn:focus-visible{outline:2px solid #70b4a3;outline-offset:1px}
.dropdown.open .dropdown-btn{border-color:#70b4a3;background:#fff}
.dropdown-text{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dropdown-caret{flex-shrink:0;width:12px;height:8px;color:#467568;display:block}
.dropdown.open .dropdown-caret{transform:rotate(180deg)}
.dropdown-menu{
  position:absolute;z-index:40;left:0;right:0;top:calc(100% + 4px);margin:0;padding:6px;
  list-style:none;background:#fff;border:1px solid var(--line);border-radius:10px;
  box-shadow:0 8px 24px #163d2922;
}
.dropdown-menu[hidden]{display:none!important}
.dropdown-menu li{
  padding:10px 12px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;color:var(--ink);
}
.dropdown-menu li:hover,.dropdown-menu li:focus{background:#edf3ec;outline:none}
.dropdown-menu li[aria-selected="true"]{background:#e4efe6;color:#146c60;font-weight:650}
/* Date fields: room for calendar icon on WebKit/mobile */
input[type="date"]{
  -webkit-appearance:none;
  appearance:none;
  padding-right:10px;
  min-width:0;
}
input[type="date"]::-webkit-calendar-picker-indicator{
  opacity:.55;
  width:16px;
  height:16px;
  padding:0;
  margin:0;
  cursor:pointer;
}
button{cursor:pointer;font:inherit;font-size:12px;font-weight:650;border-radius:8px;min-height:var(--tap)}
button:focus-visible{outline:3px solid #80bda9;outline-offset:2px}
.text-button{background:transparent;border:0;color:var(--brand);padding:6px 8px;min-height:36px}
.danger{color:#937367;font-size:11px}
.divider{height:1px;background:#edf0e9;margin:12px 0}
.hint,.muted{color:var(--muted);font-size:11px;margin:6px 0}
.family{border:1px solid var(--line);border-radius:10px;padding:12px;margin:10px 0;background:#fdfefb}
.family-head{margin-bottom:8px}
.family-head h3{margin:0;color:#78867c;font-size:10px;letter-spacing:.8px;text-transform:uppercase}
.family-info{grid-template-columns:2fr 1fr;margin-bottom:10px;gap:10px}
.meter{display:grid;grid-template-columns:1.2fr 1fr 1fr 32px;gap:8px;align-items:end;margin:8px 0}
.remove-meter{background:transparent;border:0;color:#987e71;font-size:20px;min-height:var(--tap);padding:0}
.secondary{background:#fff;border:1px solid #cbd9cd;color:#246653;padding:8px 12px}
.rules{padding:4px 12px;border-left:3px solid #b5c9a1;font-size:12px;margin:14px 0}
.rules p{color:#778477;margin:4px 0 0}
.primary{
  background:var(--brand);color:#fff;border:0;padding:12px 16px;font-size:14px;
  display:inline-flex;gap:12px;align-items:center;justify-content:space-between;flex:1;
}
.primary:hover{background:#0c5147}
.actions{justify-content:flex-start;gap:8px;flex-wrap:wrap}
.errors{background:#fff0eb;color:#913b26;padding:12px;border-radius:10px;margin:12px 0;font-size:13px}
.total-banner{
  background:var(--brand);color:#fff;border-radius:10px;padding:14px 16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;margin:14px 0;
}
.total-banner strong{display:block;font-size:28px;letter-spacing:-.8px}
.total-banner span{font-size:11px;color:#d6e8df}
.total-banner small{font-size:13px;font-weight:400}
.next-month-box{
  background:#edf3ec;border:1px solid #d5e3d4;border-radius:10px;padding:12px 14px;margin:0 0 14px;
}
.next-month-box strong{display:block;font-size:13px;color:#1f5c52;margin-bottom:4px}
.next-month-box p{margin:0 0 10px;font-size:12px;color:#5f736a}
.next-month-box .primary{width:100%;justify-content:center}
table{width:100%;border-collapse:collapse;font-size:11px;text-align:right;white-space:nowrap}
caption{text-align:left;font-size:10px;color:#718176;margin:0 0 8px}
th,td{padding:8px 6px;border-bottom:1px solid #e7ece4}
th:first-child,td:first-child{text-align:left;white-space:normal;overflow-wrap:anywhere;min-width:72px}
thead{color:#748477;font-size:9px;text-transform:uppercase;letter-spacing:.4px}
tbody th{font-weight:600}
tfoot,tbody td:last-child{font-weight:750;background:#f1f5ed}
.table-scroll{overflow:auto;margin:12px 0 16px;-webkit-overflow-scrolling:touch}
.report-head{display:flex;flex-direction:column;gap:8px}
.report-body{display:flex;flex-direction:column;gap:8px}
.print-only{display:none}
.calculation-notes{font-size:11px;color:#6b7a71;background:#f7f9f4;padding:10px 12px;border-radius:8px}
.calculation-notes p{margin:0 0 6px}
.calculation-notes p:last-child{margin:0}
footer{font-size:10px;text-align:center;color:#8a948c;padding:24px 0 8px;line-height:1.5}
.report{scroll-margin-top:12px}
.history-card{margin-top:4px}
.history-list{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.history-item{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fdfefb;
}
.history-copy{display:flex;flex-direction:column;gap:2px;min-width:0}
.history-copy strong{font-size:12px;overflow-wrap:anywhere}
.history-copy span{font-size:10px;color:var(--muted)}
.history-actions{display:flex;gap:2px;flex-shrink:0}
.history-empty{margin:10px 0 0;padding:12px;border:1px dashed #d5dfd7;border-radius:10px;text-align:center;color:var(--muted);font-size:12px}
.history-footer{display:flex;justify-content:flex-end;margin-top:12px;padding-top:10px;border-top:1px solid #edf0e9}
[hidden]{display:none!important}

@media(max-width:720px){
  .three{grid-template-columns:1fr 1fr}
  .three>label:first-child,.field-gas-rule{grid-column:1/-1}
}

@media(max-width:520px){
  main{padding:12px 12px 24px}
  header{gap:8px}
  .brand{font-size:15px}
  .logo{font-size:18px;padding:2px 7px;border-radius:8px}
  .badge{display:none}
  .intro{padding:12px 0 8px}
  h1{font-size:24px;letter-spacing:-1px;margin:6px 0}
  .intro p{font-size:12px}
  .session,.household-banner{padding:8px 10px;gap:6px}
  .household-banner{align-items:stretch;flex-direction:column}
  .household-actions{width:100%}
  .household-actions .secondary,.household-actions .text-button{flex:1;text-align:center}
  .card{padding:12px;margin:10px 0;border-radius:12px}
  .section-title{margin-bottom:10px}
  .section-title>.muted,.section-title>#example{flex-shrink:0}
  h2{font-size:15px}
  .grid{gap:8px}
  .three{grid-template-columns:1fr 1fr}
  .divider{margin:10px 0}
  label{font-size:10px;gap:3px}
  label span{font-size:9px}
  input,select,.dropdown-btn{font-size:16px;padding:9px 12px;min-height:40px}
  .dropdown-menu li{font-size:16px;padding:12px}
  .family{padding:10px;margin:8px 0}
  .family-info{grid-template-columns:1fr}
  .meter{
    grid-template-columns:1fr 1fr 28px;gap:6px;padding-bottom:8px;margin:6px 0;
    border-bottom:1px solid #e4e9df;
  }
  .meter>label:first-child{grid-column:1/-1}
  .meter:last-of-type{border-bottom:0;padding-bottom:0}
  .rules{margin:10px 0;font-size:11px;padding:2px 10px}
  .actions{width:100%}
  .primary{width:100%;padding:12px 14px;gap:10px}
  .total-banner{flex-direction:column;align-items:flex-start;padding:12px}
  .total-banner strong{font-size:24px}
  .report .section-title{align-items:flex-start;flex-direction:column}
  .history-item{align-items:flex-start;flex-direction:column}
  .history-actions{width:100%;justify-content:flex-end}
  .history-footer{justify-content:stretch}
  .history-footer .text-button{width:100%;text-align:center}
  table{font-size:10px}
  th,td{padding:7px 5px}
}

@media print{
  @page{size:A4 landscape;margin:7mm}
  html,body{background:#fff;color:#152e26;height:auto}
  main{max-width:none;padding:0;margin:0}
  header,.intro,.session,.household-banner,form,footer,#print,.print-help,.history-card,.no-print,.screen-only,.step{display:none!important}
  .print-only{display:block!important}
  .report{
    border:0;box-shadow:none;padding:0;margin:0;border-radius:0;
    break-inside:avoid;page-break-inside:avoid;
  }
  .report .section-title{margin:0 0 4px;gap:6px}
  .report h2{font-size:14px}
  .report h3{font-size:12px;margin:0 0 2px}
  .report .muted{margin:0;font-size:10px}
  .report-head{
    display:flex;flex-direction:row;align-items:center;justify-content:space-between;
    gap:12px;margin:0 0 6px;
  }
  .total-banner{
    background:#eef4ee;color:#152e26;padding:6px 10px;margin:0;border:1px solid #ccd8cc;
    flex-direction:row;align-items:center;gap:10px;min-width:220px;
  }
  .total-banner span{color:#385149;font-size:9px}
  .total-banner strong{font-size:18px;letter-spacing:-.4px}
  .total-banner small{font-size:11px}
  .report-body{
    display:grid;grid-template-columns:1.35fr 1fr;gap:10px;align-items:start;margin:0 0 6px;
  }
  .table-scroll{overflow:visible;margin:0}
  table{font-size:9px;white-space:nowrap;width:100%}
  caption{font-size:9px;margin:0 0 4px;font-weight:700;color:#385149}
  thead{display:table-header-group}
  tr{break-inside:avoid}
  th,td{padding:3px 5px}
  th:first-child,td:first-child{min-width:0}
  .calculation-notes{
    background:#f7f9f4;padding:6px 8px;border-radius:6px;font-size:9px;line-height:1.35;
    display:flex;flex-wrap:wrap;gap:4px 14px;
  }
  .calculation-notes p{margin:0}
  button{display:none}
  *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}