/* 00  Core — resets and behaviour hooks only. Every visual decision for this
       site lives in the sections below, starting with the design tokens.    */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; }
img, svg, iframe, video { display: block; max-width: 100%; }
img { height: auto; }
iframe { border: 0; }
figure { margin: 0; }
[hidden] { display: none !important; }
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.skip-link { position: absolute; left: 0.5rem; top: 0.5rem; z-index: 999; transform: translateY(-160%); padding: 0.8rem 1.2rem; background: #000; color: #fff; font-weight: 700; text-decoration: none; }
.skip-link:focus { transform: none; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.nav-toggle .icon-close, .nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }
summary { cursor: pointer; }
summary::-webkit-details-marker { display: none; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.field { display: flex; flex-direction: column; gap: 0.3rem; min-width: 0; }
.field__error { margin: 0; min-height: 1rem; font-size: 0.82rem; font-weight: 700; color: var(--err); }
.field.is-invalid :where(input, select, textarea) { border-color: var(--err); }
.form-status { min-height: 1.2rem; font-weight: 700; }
.form-status.is-error { color: var(--err); }
.form-status.is-ok { color: var(--ok); }
.img-placeholder { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.25rem; width: 100%; padding: 1rem; text-align: center; font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; line-height: 1.5; }
.img-placeholder b { display: block; font-size: 0.92rem; letter-spacing: 0; text-transform: none; word-break: break-all; }
:target { scroll-margin-top: 120px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; } }

/* ==========================================================================
   Heritage HVAC Solutions — heritagehvac.xyz
   THE DEVICE: the archive. Record cards, ruled indexes, a serif voice and a
   home page with no photographs on it at all. Navigation is a native <details>
   disclosure, so the menu works with JavaScript switched off.
   01 Tokens · 02 Base · 03 Header · 04 Buttons · 05 Home index
   06 Page heads · 07 Sections · 08 Record card (signature)
   09 FAQ · 10 Form & contact · 11 Footer · 12 Images · 13 Print
   ========================================================================== */

/* 01 Tokens */
:root {
  --ink: #111111; --ink-2: #2a2a2a; --paper: #ffffff; --paper-2: #f4f2ef; --card: #faf8f5;
  --red: #c0392b; --red-dark: #9c2c20; --red-soft: #fbe9e6;
  --text: #3c3a37; --muted: #6b6864; --line: #d8d4cd; --rule: #111111;
  --focus: #9c2c20; --err: #9c2c20; --ok: #2c6b4f;
  --disp: "Lora", Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --f-sm: 0.92rem; --f-xs: 0.78rem; --f0: clamp(1rem, 0.97rem + 0.18vw, 1.08rem);
  --f1: clamp(1.18rem, 1.04rem + 0.6vw, 1.46rem);
  --f2: clamp(1.7rem, 1.3rem + 1.8vw, 2.55rem); --f3: clamp(2.2rem, 1.5rem + 3.4vw, 4rem);
  --wrap: 1080px; --pad-y: clamp(3rem, 2.3rem + 3.6vw, 5.2rem);
}

/* 02 Base */
body { background: var(--paper); color: var(--text); font-family: var(--sans); font-size: var(--f0); line-height: 1.72; }
h1, h2, h3 { margin: 0 0 0.5em; font-family: var(--disp); color: var(--ink); font-weight: 600; line-height: 1.16; letter-spacing: -0.012em; text-wrap: balance; }
h1 { font-size: var(--f3); }
h2 { font-size: var(--f2); }
h3 { font-size: var(--f1); }
p { margin: 0 0 1em; max-width: 66ch; }
p:last-child { margin-bottom: 0; }
a { color: var(--red-dark); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
strong, b { color: var(--ink); font-weight: 700; }
ul, ol { margin: 0 0 1em; padding-left: 1.2em; }
.wrap { width: min(100% - 2rem, var(--wrap)); margin-inline: auto; }
.file { display: block; margin-bottom: 0.6rem; font-family: var(--sans); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.24em; text-transform: uppercase; color: var(--red-dark); }
.sec--ink .file { color: #f0a59c; }
.mt { margin-top: 2rem; }

/* 03 Header — a tall masthead, centred, with the menu as a <details> */
.hd { position: sticky; top: 0; z-index: 30; background: var(--paper); border-bottom: 3px solid var(--rule); }
.hd__top { display: flex; align-items: center; gap: 0.8rem; width: min(100% - 2rem, var(--wrap)); margin-inline: auto; padding-block: 0.7rem; }
.hr-logo { display: inline-flex; flex-direction: column; margin-right: auto; color: var(--ink); text-decoration: none; }
.hr-logo b { font-family: var(--disp); font-size: clamp(1.32rem, 1.15rem + 0.8vw, 1.85rem); font-weight: 600; letter-spacing: -0.022em; }
.hr-logo small { font-size: 0.6rem; font-weight: 700; letter-spacing: 0.26em; text-transform: uppercase; color: var(--red-dark); }
.hd__tel { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--ink); font-weight: 700; text-decoration: none; white-space: nowrap; }
.hd__tel svg { width: 16px; height: 16px; color: var(--red); flex: none; }
.hd__tel:hover { color: var(--red-dark); }
@media (max-width: 520px) { .hd__tel span { display: none; } }

.hrmenu { border-top: 1px solid var(--line); }
.hrmenu > summary { display: flex; align-items: center; justify-content: center; gap: 0.5rem; width: min(100% - 2rem, var(--wrap)); margin-inline: auto; padding: 0.6rem 0; font-family: var(--sans); font-size: 0.76rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink); list-style: none; cursor: pointer; }
.hrmenu > summary::after { content: "\25BE"; font-size: 0.8rem; color: var(--red); }
.hrmenu[open] > summary::after { content: "\25B4"; }
.hrnav { width: min(100% - 2rem, var(--wrap)); margin-inline: auto; display: flex; flex-direction: column; padding-bottom: 0.9rem; }
.hrnav a { padding: 0.7rem 0; border-top: 1px solid var(--line); color: var(--ink); font-family: var(--disp); font-size: 1.12rem; text-decoration: none; }
.hrnav a[aria-current="page"] { color: var(--red-dark); }
@media (min-width: 900px) {
  .hrmenu > summary { display: none; }
  .hrnav { flex-direction: row; justify-content: center; gap: 2rem; padding-block: 0.55rem 0.7rem; }
  .hrnav a { padding: 0.2rem 0; border-top: 0; font-size: 1.04rem; border-bottom: 2px solid transparent; }
  .hrnav a:hover { color: var(--red-dark); }
  .hrnav a[aria-current="page"] { border-bottom-color: var(--red); }
}

/* 04 Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.72rem 1.3rem; border: 2px solid var(--ink); border-radius: 0; background: var(--ink); color: #fff; font: inherit; font-weight: 700; line-height: 1.3; text-decoration: none; white-space: nowrap; cursor: pointer; transition: background-color 0.16s, color 0.16s; }
.btn:hover { background: var(--paper); color: var(--ink); }
.btn svg { width: 1.05em; height: 1.05em; flex: none; }
.btn--red { background: var(--red-dark); border-color: var(--red-dark); }
.btn--red:hover { background: var(--paper); color: var(--red-dark); }
.btn--line { background: transparent; color: var(--ink); }
.btn--line:hover { background: var(--ink); color: #fff; }
.btn--paper, .phead a.btn--paper, .sec--ink a.btn--paper { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.btn--paper:hover, .phead a.btn--paper:hover, .sec--ink a.btn--paper:hover { background: transparent; color: #fff; }
.btns { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.4rem; }

/* 05 The home index — type only, no photographs */
.statement { padding-block: clamp(3rem, 2.2rem + 4vw, 5.6rem) clamp(2rem, 1.6rem + 2.4vw, 3.4rem); }
.statement h1 { max-width: 19ch; }
.statement p.lede { font-family: var(--disp); font-size: var(--f1); line-height: 1.55; color: var(--ink); max-width: 52ch; }
.keeps { display: grid; gap: 1.6rem; margin: 0; padding: 0; list-style: none; border-top: 3px solid var(--rule); padding-top: 1.6rem; }
@media (min-width: 780px) { .keeps { grid-template-columns: repeat(3, 1fr); gap: 2.6rem; } }
.keeps li { font-size: var(--f-sm); }
.keeps b { display: block; margin-bottom: 0.25rem; font-family: var(--disp); font-size: 1.16rem; color: var(--ink); }
.index { margin: 0; padding: 0; list-style: none; border-top: 3px solid var(--rule); }
.index li { padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
@media (min-width: 820px) { .index li { display: grid; grid-template-columns: 3.5rem 1fr 1fr; gap: 2rem; align-items: baseline; } }
.index .n { font-family: var(--sans); font-size: 0.74rem; font-weight: 700; letter-spacing: 0.16em; color: var(--red-dark); }
.index b { font-family: var(--disp); font-size: 1.2rem; color: var(--ink); }
.index p { margin: 0; font-size: var(--f-sm); }
.pull { padding-block: clamp(2.4rem, 2rem + 2.6vw, 4rem); background: var(--ink); color: #c9c5bf; }
.pull blockquote { margin: 0; max-width: 34ch; font-family: var(--disp); font-size: clamp(1.5rem, 1.15rem + 1.8vw, 2.5rem); line-height: 1.25; color: #fff; }
.pull cite { display: block; margin-top: 1.2rem; font-family: var(--sans); font-size: 0.78rem; font-style: normal; letter-spacing: 0.18em; text-transform: uppercase; color: #f0a59c; }

/* 06 Page heads */
.phead { padding-block: clamp(2.2rem, 1.8rem + 2.4vw, 3.4rem); border-bottom: 3px solid var(--rule); }
.phead h1 { max-width: 20ch; }
.phead p { font-size: 1.06rem; max-width: 58ch; }
.crumbs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 0.9rem; padding: 0; list-style: none; font-size: 0.82rem; }
.crumbs li + li::before { content: "/"; margin-right: 0.5rem; color: var(--red); }

/* 07 Sections */
.sec { padding-block: var(--pad-y); }
.sec--paper2 { background: var(--paper-2); }
.sec--ink { background: var(--ink); color: #c9c5bf; }
.sec--ink h2, .sec--ink h3, .sec--ink b { color: #fff; }
.sec--ink a:not(.btn) { color: #fff; }
.sec--ink :focus-visible { outline-color: #f0a59c; }
.head { max-width: 620px; margin-bottom: 2.2rem; }

.cards { display: grid; gap: 1.2rem; margin: 0; padding: 0; list-style: none; }
@media (min-width: 780px) { .cards { grid-template-columns: repeat(2, 1fr); gap: 1.6rem; } }
.cards li { padding: 1.3rem 1.4rem; background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--red); font-size: var(--f-sm); }
.cards b { display: block; margin-bottom: 0.25rem; font-family: var(--disp); font-size: 1.14rem; color: var(--ink); }
.ruled { margin: 0; padding: 0; list-style: none; }
.ruled li { display: grid; gap: 0.15rem; padding: 0.9rem 0; border-bottom: 1px solid var(--line); }
.sec--ink .ruled li { border-bottom-color: rgba(255,255,255,0.24); }
.ruled b { font-family: var(--disp); font-size: 1.1rem; }
.ruled span { font-size: var(--f-sm); }
.split { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; gap: 3rem; } .split--flip > :first-child { order: 2; } }
.split > * { min-width: 0; }
.split img, .split .img-placeholder { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; filter: grayscale(1) contrast(1.06); }
.map { display: block; width: 100%; height: clamp(300px, 34vw, 400px); background: var(--paper-2); filter: grayscale(1); }
.where { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 880px) { .where { grid-template-columns: 0.9fr 1.1fr; gap: 3rem; } }

/* 08 The record card (signature) */
.rec { display: grid; gap: 1.8rem; }
@media (min-width: 980px) { .rec { grid-template-columns: 0.95fr 1.05fr; gap: 2.6rem; align-items: start; } }
.rec__form { padding: clamp(1.3rem, 1.1rem + 1.4vw, 1.9rem); background: var(--paper-2); border: 1px solid var(--line); }
.rec__form .row { margin-bottom: 0.9rem; }
.rec__form .row:last-child { margin-bottom: 0; }
.rec__form label { display: block; margin-bottom: 0.25rem; font-size: 0.86rem; font-weight: 700; color: var(--ink); }
.rec__form .hint { margin: 0.25rem 0 0; font-size: 0.8rem; color: var(--muted); }
.card { padding: clamp(1.4rem, 1.2rem + 1.4vw, 2.1rem); background: var(--card); border: 3px double var(--ink); }
.card h2 { margin-bottom: 0.15rem; font-size: 1.5rem; }
.card__sub { margin: 0 0 1.2rem; padding-bottom: 0.9rem; border-bottom: 1px solid var(--line); font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.card dl { display: grid; gap: 0; margin: 0; }
@media (min-width: 520px) { .card dl { grid-template-columns: 11rem 1fr; } }
.card dt { padding: 0.55rem 0; border-top: 1px solid var(--line); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.card dd { margin: 0; padding: 0.55rem 0; border-top: 1px solid var(--line); font-family: var(--disp); font-size: 1.08rem; color: var(--ink); word-break: break-word; }
@media (max-width: 519px) { .card dt { border-top: 1px solid var(--line); padding-bottom: 0; } .card dd { border-top: 0; padding-top: 0.1rem; } }
.card dd.blank { font-family: var(--sans); font-size: 0.92rem; font-style: italic; color: var(--red-dark); }
.card__count { margin-top: 1.2rem; padding-top: 0.9rem; border-top: 3px double var(--ink); font-size: var(--f-sm); font-weight: 700; color: var(--ink); }
.card__why { margin-top: 1.6rem; padding: 1rem 1.2rem; background: var(--red-soft); border-left: 4px solid var(--red); font-size: var(--f-sm); }
.card__why b { display: block; margin-bottom: 0.3rem; font-family: var(--disp); }

/* 09 FAQ */
.faq { display: grid; gap: 0; max-width: 860px; border-top: 3px solid var(--rule); }
.hrq { border-bottom: 1px solid var(--line); }
.hrq summary { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem 0; font-family: var(--disp); font-weight: 600; font-size: 1.14rem; color: var(--ink); list-style: none; cursor: pointer; }
.hrq summary::after { content: "+"; flex: none; color: var(--red-dark); font-family: var(--sans); }
.hrq[open] summary::after { content: "\2013"; }
.hrq > div { padding: 0 0 1.1rem; }

/* 10 Form & contact */
.form { display: grid; gap: 1rem 1.3rem; margin-top: 1.2rem; }
@media (min-width: 640px) { .form--2col { grid-template-columns: 1fr 1fr; } }
.field--full, .form__end { grid-column: 1 / -1; }
.field label, .picks legend { font-weight: 700; color: var(--ink); font-size: 0.92rem; }
.req { color: var(--err); }
.opt { font-weight: 400; color: var(--muted); }
input[type="text"], input[type="tel"], input[type="email"], input[type="number"], select, textarea { width: 100%; padding: 0.68rem 0.85rem; font: inherit; color: var(--ink); background: var(--paper); border: 1px solid #bdb9b1; border-radius: 0; }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23111111' stroke-width='2.6'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.8rem center; background-size: 15px; padding-right: 2.3rem; }
textarea { min-height: 140px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--ink); }
.picks { margin: 0; padding: 0; border: 0; display: flex; flex-direction: row; flex-wrap: wrap; gap: 0.4rem; }
.picks legend { margin-bottom: 0.45rem; padding: 0; }
.pick { position: relative; }
.pick input { position: absolute; opacity: 0; }
.pick span { display: inline-block; padding: 0.42rem 0.85rem; border: 1px solid #bdb9b1; background: var(--paper); font-size: var(--f-sm); cursor: pointer; }
.pick input:checked + span { background: var(--ink); border-color: var(--ink); color: #fff; }
.pick input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 2px; }
.form-note { margin: 0.5rem 0 0; font-size: 0.84rem; color: var(--muted); }
.contact { display: grid; gap: 2.2rem; align-items: start; }
@media (min-width: 920px) { .contact { grid-template-columns: 1.1fr 0.9fr; gap: 3rem; } }
.contact > * { min-width: 0; }
.side { display: grid; gap: 0; border-top: 3px solid var(--rule); }
.side__card { padding: 1.2rem 0; border-bottom: 1px solid var(--line); }
.side__card h2 { font-size: 1.16rem; }
.side__card .big { display: block; margin: 0.1rem 0 0.3rem; font-family: var(--disp); font-size: 1.7rem; color: var(--ink); text-decoration: none; }

/* 11 Footer */
.ft { background: var(--ink); color: #9d9993; font-size: var(--f-sm); }
.ft a { color: #fff; }
.ft :focus-visible { outline-color: #f0a59c; }
.ft__row { display: grid; gap: 1.5rem; padding-block: 2.8rem 1.6rem; }
@media (min-width: 820px) { .ft__row { grid-template-columns: 1.6fr 1fr 1fr; } }
.ft__name { margin: 0 0 0.45rem; font-family: var(--disp); font-size: 1.3rem; color: #fff; }
.ft h2 { margin: 0 0 0.55rem; font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: #f0a59c; }
.ft ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 0.32rem; }
.ft__base { padding-block: 0.9rem; border-top: 1px solid rgba(255,255,255,0.16); font-size: 0.8rem; }

/* 12 Images — greyscale, and only on inner pages */
.img-placeholder { background: var(--paper-2); border: 1px dashed #b6b2aa; color: var(--muted); filter: none; }
.img-placeholder b { color: var(--ink); }

/* 13 Print — the record card, and nothing else */
@media print {
  .hd, .ft, .phead, .rec__form, .sec--ink, .btns, .skip-link { display: none !important; }
  body { background: #fff; color: #000; }
  .card { border: 2px solid #000; }
  .card__why { background: transparent; border-left: 2px solid #000; }
}