/* Cold Bear running-cost calculator ([cb_running_cost]).
   Every rule is scoped under .cbrc so the theme is untouched; the site font is inherited.
   White cards on a pale ice-blue ground; questions left, sticky estimate right; stacks on phones. */
.cbrc {
  --bg: #f1fafc;        /* ice-blue ground */
  --card: #ffffff;
  --tint: #e2f6f9;      /* light logo aqua */
  --line: #cbe8ef;
  --ink: #0e2a38;
  --muted: #4b6874;
  --accent: #0b87a0;    /* deep logo aqua, readable on white */
  --aqua: #5fe3d8;      /* logo "COLD-BEAR" aqua */
  --heat: #d9242d;      /* logo "HEATING" red */
  --supply: #f1a3a3;
  --cool: #2e9fe3;      /* logo "COOLING" sky blue */
  --standby: #9db4bf;
  --good: #0b7a55;
  --r: 14px;
  color-scheme: light;
  background: var(--bg); color: var(--ink);
  font-family: inherit; font-size: 15px; line-height: 1.55; font-weight: 400;
  padding: 16px; border-radius: var(--r); text-align: left; position: relative;
}
.cbrc *, .cbrc *::before, .cbrc *::after { box-sizing: border-box; }
.cbrc [hidden] { display: none !important; }
.cbrc h2, .cbrc h3, .cbrc p, .cbrc fieldset, .cbrc legend, .cbrc table { margin: 0; }
.cbrc h2, .cbrc h3 { color: var(--ink); text-transform: none; letter-spacing: normal; font-family: inherit; }
.cbrc button, .cbrc input, .cbrc select { font-family: inherit; }
.cbrc-wrap { max-width: 1060px; margin: 0 auto; display: grid; gap: 18px; }

.cbrc-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 12px 16px; }
.cbrc-brand { min-width: 0; }
.cbrc .cbrc-title { font-size: 20px; line-height: 1.2; font-weight: 700; }
.cbrc-brand p { color: var(--muted); font-size: 13.5px; }
.cbrc .cbrc-lang { border: 1px solid var(--line); background: var(--tint); color: var(--accent); border-radius: 999px;
  padding: 7px 14px; font-size: 13px; font-weight: 600; line-height: 1.3; cursor: pointer; box-shadow: none; text-transform: none;
  width: auto; min-height: 0; }
.cbrc .cbrc-lang:hover { border-color: var(--accent); background: var(--tint); color: var(--accent); }
.cbrc .cbrc-lang:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.cbrc-grid { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 18px; align-items: start; }
.cbrc-questions { display: grid; gap: 14px; min-width: 0; margin: 0; }

.cbrc-q { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 18px; display: grid; gap: 14px; }
.cbrc-q h3 { font-size: 17px; line-height: 1.3; font-weight: 600; display: flex; gap: 10px; align-items: baseline; }
.cbrc-step { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; flex: none;
  background: var(--tint); color: var(--accent); font-size: 12px; font-weight: 700; }
.cbrc-row { display: grid; gap: 6px; }
.cbrc-lbl { font-weight: 500; font-size: 14px; margin: 0; }
.cbrc-hint { color: var(--muted); font-size: 13px; }
.cbrc-advhint { margin-top: 12px; }

.cbrc-num { display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 10px; background: var(--card);
  max-width: 180px; }
.cbrc-num:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--tint); }
.cbrc .cbrc-num input { width: 100%; min-width: 0; height: auto; margin: 0; border: 0; border-radius: 10px; box-shadow: none;
  background: transparent; color: var(--ink); font-size: 16px; font-weight: 600; line-height: 1.4;
  padding: 10px 4px 10px 12px; font-variant-numeric: tabular-nums; outline: none; }
.cbrc-num span { color: var(--muted); font-size: 13px; padding-right: 12px; white-space: nowrap; }

.cbrc-seg { display: flex; flex-wrap: wrap; gap: 6px; border: 0; padding: 0; min-width: 0; }
.cbrc-seg legend { font-weight: 500; font-size: 14px; margin-bottom: 6px; padding: 0; width: 100%; float: none; }
.cbrc-seg label { position: relative; margin: 0; }
.cbrc .cbrc-seg input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.cbrc-seg span { display: block; padding: 8px 15px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px;
  background: var(--card); cursor: pointer; transition: background .15s, border-color .15s; }
.cbrc-seg span:hover { border-color: var(--aqua); }
.cbrc-seg input:checked + span { background: var(--tint); border-color: var(--accent); color: var(--accent); font-weight: 600; }
.cbrc-seg input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

.cbrc select { width: 100%; max-width: none; height: auto; margin: 0; border: 1px solid var(--line); border-radius: 10px;
  background-color: var(--card); color: var(--ink); font-size: 15px; font-weight: 500; line-height: 1.4; padding: 10px 12px; }
.cbrc select:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.cbrc-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.cbrc-adv { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 14px 18px; }
.cbrc-adv summary { cursor: pointer; font-weight: 600; color: var(--accent); }
.cbrc-adv[open] summary { margin-bottom: 14px; }
.cbrc-advgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }

.cbrc-estimate { position: sticky; top: 92px; /* clears the site's sticky 73px header */ background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  overflow: hidden; display: grid; }
.cbrc-est-head { background: linear-gradient(135deg, var(--tint), var(--card)); border-bottom: 1px solid var(--line);
  padding: 18px; display: grid; gap: 6px; }
.cbrc-eyebrow { font-size: 11px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.cbrc .cbrc-headline { font-size: 26px; line-height: 1.15; font-weight: 700; text-wrap: balance; }
.cbrc .cbrc-headline.cbrc-good { color: var(--good); }
.cbrc-switch { color: var(--muted); font-size: 13px; }
.cbrc-est-body { padding: 18px; display: grid; gap: 16px; }

.cbrc-bars { display: grid; gap: 12px; }
.cbrc-bar-top { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; }
.cbrc-bar-top b { font-variant-numeric: tabular-nums; }
.cbrc-track { display: flex; height: 12px; border-radius: 999px; background: var(--bg); overflow: hidden; margin-top: 5px; }
.cbrc-track i { display: block; height: 100%; transition: width .35s ease; }
.cbrc .i-heat { background: var(--heat); } .cbrc .i-supply { background: var(--supply); } .cbrc .i-cool { background: var(--cool); }
.cbrc .i-standby { background: var(--standby); }
.cbrc-legend { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--muted); }
.cbrc-legend span::before { content: ""; display: inline-block; width: 9px; height: 9px; border-radius: 3px; margin-right: 6px;
  background: var(--c); vertical-align: -1px; }

.cbrc .cbrc-table { width: 100%; border: 0; border-collapse: collapse; font-size: 13.5px; font-variant-numeric: tabular-nums; background: none; }
.cbrc .cbrc-table th, .cbrc .cbrc-table td { padding: 6px 0; text-align: right; border: 0; border-bottom: 1px solid var(--line); background: none; }
.cbrc .cbrc-table th:first-child, .cbrc .cbrc-table td:first-child { text-align: left; color: var(--muted); font-weight: 400; }
.cbrc .cbrc-table thead th { font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.cbrc .cbrc-table tr.cbrc-total td { color: var(--ink); font-weight: 600; }
.cbrc .cbrc-table td.cbrc-na { color: var(--muted); font-size: 12.5px; }

.cbrc-note { font-size: 13px; padding: 10px 12px; border-radius: 10px; background: var(--tint); color: var(--ink); }
.cbrc-fine { font-size: 12px; color: var(--muted); }
.cbrc .cbrc-vh { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important;
  margin: -1px !important; border: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.cbrc-cta { display: grid; gap: 6px; justify-items: start; }
.cbrc .cbrc-quote { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; border-radius: 999px;
  padding: 10px 18px; font-size: 15px; font-weight: 600; line-height: 1.3; }
.cbrc .cbrc-quote:hover, .cbrc .cbrc-quote:focus { background: #087186; color: #fff; text-decoration: none; }
.cbrc .cbrc-quote:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.cbrc-cta p { font-size: 13px; color: var(--muted); }

.cbrc-about { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 18px; display: grid; gap: 10px; }
.cbrc-about h3 { font-size: 17px; line-height: 1.3; font-weight: 600; }
.cbrc-about p { font-size: 13px; color: var(--muted); }
.cbrc-about strong { color: var(--ink); }

@media (max-width: 860px) {
  .cbrc-grid { grid-template-columns: minmax(0, 1fr); }
  .cbrc-estimate { position: static; }
}
@media (max-width: 460px) {
  .cbrc { padding: 10px; }
  .cbrc-pair { grid-template-columns: 1fr; }
  .cbrc .cbrc-headline { font-size: 23px; }
  .cbrc-q, .cbrc-about { padding: 14px; }
}
@media (prefers-reduced-motion: reduce) { .cbrc-track i, .cbrc-seg span { transition: none; } }