/* Little Town HVAC: shared styles for home, savings and fit-check pages.
   Layout: single-column trade sheet, large type and big tap targets for non-technical visitors. */
:root {
  --bg: #f4f6f7;
  --surface: #ffffff;
  --ink: #15212a;
  --muted: #4d5b65;
  --line: #d3dbe0;
  --spruce: #1f5c46;
  --spruce-soft: #e3efe9;
  --ember: #c2541f;
  --ember-soft: #fbeae1;
  --frost: #2f6f9a;
  --sky: #dcebf5;
  --wall: #cfc8bd;
  --ok: #1f7a4d;
  --bad: #b23b2a;
  --warn: #a8660b;
  --display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", sans-serif;
  --body: "Public Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f171c; --surface: #16222a; --ink: #e8eef1; --muted: #a3b4be; --line: #2a3a44;
    --spruce: #5cbf95; --spruce-soft: #1b3229; --ember: #f08a52; --ember-soft: #3a2418; --frost: #74b4dd;
    --sky: #1d3444; --wall: #4a4540; --ok: #5cc98f; --bad: #f07b68; --warn: #e6a94a; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f171c; --surface: #16222a; --ink: #e8eef1; --muted: #a3b4be; --line: #2a3a44;
  --spruce: #5cbf95; --spruce-soft: #1b3229; --ember: #f08a52; --ember-soft: #3a2418; --frost: #74b4dd;
  --sky: #1d3444; --wall: #4a4540; --ok: #5cc98f; --bad: #f07b68; --warn: #e6a94a; color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--body); font-size: 18px; line-height: 1.55; }
img { max-width: 100%; }
[hidden] { display: none !important; }
.wrap { max-width: 980px; margin: 0 auto; padding-inline: 20px; padding-block: 0 56px; }
h1, h2, h3 { font-family: var(--display); line-height: 1.04; text-wrap: balance; margin: 0; letter-spacing: .005em; }
h1 { font-size: clamp(40px, 7.5vw, 76px); font-weight: 800; }
h2 { font-size: clamp(32px, 5vw, 44px); font-weight: 700; }
h3 { font-size: 24px; font-weight: 700; }
p { margin: 0; }
a { color: var(--spruce); }
.fine { font-size: 15px; color: var(--muted); max-width: 70ch; }
.lead { font-size: 20px; max-width: 60ch; color: var(--muted); }
:focus-visible { outline: 3px solid var(--frost); outline-offset: 2px; }

/* header + nav */
header.top { display: grid; gap: 14px; padding-block: 18px; border-bottom: 1px solid var(--line); }
.top-row { display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; justify-content: space-between; }
.brand { font-family: var(--display); font-weight: 800; font-size: 28px; letter-spacing: .02em; text-transform: uppercase; color: var(--ink); text-decoration: none; }
.brand small { display: block; font-family: var(--mono); font-weight: 500; font-size: 12px; letter-spacing: .14em; color: var(--muted); }
.top-call { font-size: 17px; }
.top-call b { font-family: var(--display); font-size: 26px; letter-spacing: .02em; }
nav.tabs { display: flex; flex-wrap: wrap; gap: 8px; }
nav.tabs a { display: inline-flex; align-items: center; min-height: 48px; padding: 8px 18px; border-radius: 999px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); font-weight: 600; font-size: 17px; text-decoration: none; }
nav.tabs a:hover { border-color: var(--spruce); }
nav.tabs a[aria-current="page"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 56px; padding: 12px 24px; border-radius: 10px; border: 2px solid transparent; font: 700 19px var(--body); text-decoration: none; cursor: pointer; text-align: center; }
.btn-primary { background: var(--spruce); color: var(--bg); }
.btn-ember { background: var(--ember); color: var(--bg); }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.copy { align-self: flex-start; margin-top: 4px; font: 600 15px var(--body); min-height: 40px; padding: 6px 12px; border-radius: 6px; border: 1px solid currentColor; background: transparent; color: inherit; cursor: pointer; }

/* contact */
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: stretch; }
.contact-card { display: flex; flex-direction: column; gap: 4px; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 14px 18px; min-width: 0; }
.contact-card .k { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.contact-card .v { font-family: var(--display); font-size: 32px; font-weight: 700; letter-spacing: .02em; overflow-wrap: anywhere; }
.contact-card.primary { background: var(--spruce); border-color: var(--spruce); color: var(--bg); }
.contact-card.primary .k { color: var(--bg); opacity: .85; }

.contact-card a.v { color: inherit; text-decoration: none; }
.act { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.act-btn { display: inline-flex; align-items: center; min-height: 44px; padding: 8px 18px; border-radius: 8px; border: 2px solid currentColor; color: inherit; font-weight: 700; font-size: 17px; text-decoration: none; }
.top-num { color: inherit; text-decoration: none; }
footer a { color: inherit; }

/* big option buttons used on both tools */
.choices { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.choice { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; min-height: 64px; padding: 14px 16px; border-radius: 10px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); font: 600 19px var(--body); text-align: left; cursor: pointer; }
.choice small { font-weight: 400; font-size: 15px; color: var(--muted); }
.choice:hover { border-color: var(--spruce); }
.choice[aria-pressed="true"], .choice[aria-checked="true"] { border-color: var(--spruce); background: var(--spruce-soft); box-shadow: inset 0 0 0 1px var(--spruce); }
.question { display: grid; gap: 12px; }
.question > .q { font-family: var(--display); font-weight: 700; font-size: 28px; line-height: 1.1; }
.question > .q .num { color: var(--ember); margin-right: 6px; }
.num-input { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.num-input input { font: 600 28px var(--mono); width: 9ch; padding: 10px 14px; border: 2px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); }
.num-input input:focus { border-color: var(--spruce); }
.num-input .unit { font-size: 20px; color: var(--muted); }
.stepper { display: inline-flex; align-items: center; gap: 0; border: 2px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--surface); }
.stepper button { width: 60px; height: 60px; border: 0; background: var(--surface); color: var(--ink); font: 700 30px var(--body); cursor: pointer; }
.stepper button:hover { background: var(--spruce-soft); }
.stepper output { min-width: 64px; text-align: center; font: 700 30px var(--mono); }

section.block { padding-block: 48px 0; display: grid; gap: 22px; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 24px 22px; }

footer { margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--line); display: grid; gap: 10px; font-size: 15px; color: var(--muted); }
footer .towns { font-family: var(--mono); font-size: 14px; line-height: 1.8; }

@media (max-width: 520px) {
  body { font-size: 17px; }
  .choices { grid-template-columns: 1fr; }
}

/* introductory offer */
.promo-bar { background: #b0461a; color: #fff; padding-block: 10px; padding-inline: 20px; text-align: center; font-size: 17px; }
.promo-bar p { max-width: 980px; margin: 0 auto; }
.promo-bar a { color: #fff; font-weight: 700; }
.promo-note { background: var(--ember-soft); border-left: 4px solid var(--ember); border-radius: 6px; padding: 12px 16px; font-size: 17px; }
.promo-dialog { width: min(520px, calc(100vw - 32px)); border: 0; border-radius: 14px; padding: 28px 24px 20px; background: var(--surface); color: var(--ink); box-shadow: 0 20px 60px rgba(0,0,0,.35); }
.promo-dialog::backdrop { background: rgba(10, 18, 24, .55); }
.promo-dialog h2 { font-size: clamp(30px, 6vw, 38px); margin: 4px 0 12px; }
.promo-dialog p { color: var(--muted); }
.promo-tag { font-family: var(--mono); font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--ember) !important; }
.promo-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.promo-actions .btn { flex: 1 1 180px; }
.promo-x { position: absolute; top: 8px; right: 10px; width: 44px; height: 44px; border: 0; background: none; color: var(--muted); font-size: 30px; line-height: 1; cursor: pointer; }
.promo-later { display: block; margin: 14px auto 0; background: none; border: 0; color: var(--muted); font: 600 16px var(--body); text-decoration: underline; cursor: pointer; min-height: 44px; }
.price-box .amt .was { display: block; font-size: .42em; color: var(--muted); font-weight: 700; }
.price-tag s, .promo-bar s { opacity: .8; }
.promo-fine { font-size: 15px; margin-top: 10px; }
.promo-dialog .promo-mil { color: var(--ink); margin-top: 10px; font-size: 17px; }