/* 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; } }

/* ==========================================================================
   Carter HVAC & Brush Studio — carterhvac.xyz
   Midnight navy, tangerine and warm grey; one geometric sans.
   01 Tokens · 02 Base · 03 Header & hanging buttons · 04 Buttons · 05 Hero
   06 Page heads · 07 Sections · 08 Home-office calculator (signature)
   09 FAQ · 10 Form & contact · 11 Footer · 12 Images
   ========================================================================== */

/* 01 Tokens */
:root {
  --navy: #16233b; --navy-2: #22324f; --navy-soft: #e8ecf3;
  --tan: #e8672c; --tan-dark: #b2461a; --tan-soft: #fdeee6;
  --grey: #f4f3f0; --white: #ffffff;
  --ink: #141b2b; --text: #3c4454; --muted: #5a6272; --line: #e1dfda;
  --focus: #b2461a; --err: #b3261e; --ok: #1f6b3d;
  --font: "Lexend Deca", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --f-sm: 0.9rem; --f0: clamp(0.98rem, 0.95rem + 0.15vw, 1.05rem); --f1: clamp(1.15rem, 1.05rem + 0.45vw, 1.4rem);
  --f2: clamp(1.7rem, 1.3rem + 1.7vw, 2.5rem); --f3: clamp(2.2rem, 1.5rem + 3vw, 3.8rem);
  --r: 14px; --wrap: 1200px; --pad-y: clamp(3.2rem, 2.4rem + 4vw, 6rem);
}

/* 02 Base */
body { background: var(--white); color: var(--text); font-family: var(--font); font-size: var(--f0); line-height: 1.65; }
h1, h2, h3 { margin: 0 0 0.5em; color: var(--ink); font-weight: 600; line-height: 1.15; letter-spacing: -0.02em; 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: 64ch; }
p:last-child { margin-bottom: 0; }
a { color: var(--tan-dark); }
a:hover { color: var(--navy); }
strong, b { color: var(--ink); font-weight: 600; }
ul, ol { margin: 0 0 1em; padding-left: 1.2em; }
.wrap { width: min(100% - 2rem, var(--wrap)); margin-inline: auto; }
.tagline { display: inline-block; margin-bottom: 0.9rem; padding: 0.25rem 0.7rem; border-radius: 99px; background: var(--tan-soft); color: var(--tan-dark); font-size: 0.8rem; font-weight: 600; }
.mt { margin-top: 2rem; }

/* 03 Header & hanging buttons */
.hd { position: sticky; top: 0; z-index: 30; background: var(--white); border-bottom: 1px solid var(--line); }
.hd .wrap { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 68px; }
.ct-logo { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--ink); text-decoration: none; }
.ct-logo svg { width: 38px; height: 38px; flex: none; }
.ct-logo b { display: block; font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1; }
.ct-logo small { display: block; margin-top: 0.2rem; font-size: 0.72rem; color: var(--muted); }
.nav-toggle { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 46px; height: 46px; border: 0; border-radius: 12px; background: var(--grey); color: var(--ink); cursor: pointer; }
.nav-toggle svg { width: 22px; height: 22px; }
.hang { position: absolute; right: 4.2rem; bottom: -24px; display: flex; gap: 0.5rem; }
.hang a { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--navy); color: #fff; box-shadow: 0 6px 14px -6px rgba(22,35,59,0.6); border: 3px solid var(--white); }
.hang a.hang__book { background: var(--tan-dark); }
.hang svg { width: 20px; height: 20px; }
.cnav, .hd__cta { display: none; }
@media (max-width: 1023px) {
  .cnav { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0.2rem; padding: 2.2rem 1rem 1.2rem; background: var(--white); border-bottom: 1px solid var(--line); box-shadow: 0 20px 30px -24px rgba(22,35,59,0.5); }
  .cnav.is-open { display: flex; }
  .cnav a { padding: 0.8rem 1rem; border-radius: 10px; color: var(--ink); font-size: 1.1rem; font-weight: 600; text-decoration: none; }
  .cnav a[aria-current="page"] { background: var(--tan-soft); color: var(--tan-dark); }
}
@media (min-width: 1024px) {
  .hd .wrap { min-height: 80px; }
  .nav-toggle, .hang { display: none; }
  .cnav { display: flex; gap: 0.3rem; margin-inline: auto; padding: 0.3rem; border-radius: 99px; background: var(--grey); }
  .cnav a { padding: 0.5rem 1.05rem; border-radius: 99px; color: var(--text); font-size: 0.95rem; font-weight: 500; text-decoration: none; }
  .cnav a:hover { color: var(--ink); }
  .cnav a[aria-current="page"] { background: var(--white); color: var(--ink); font-weight: 600; box-shadow: 0 1px 3px rgba(22,35,59,0.18); }
  .hd__cta { display: flex; align-items: center; gap: 1rem; }
  .hd__tel { color: var(--ink); font-weight: 600; text-decoration: none; white-space: nowrap; }
}
main { padding-top: 0; }

/* 04 Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.55rem; padding: 0.85rem 1.4rem; border: 0; border-radius: 99px; background: var(--tan-dark); color: #fff; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; transition: background-color 0.2s, color 0.2s; }
.btn:hover { background: var(--navy); color: #fff; }
.btn svg { width: 1.1em; height: 1.1em; flex: none; }
.btn--navy { background: var(--navy); }
.btn--navy:hover { background: var(--tan-dark); }
.btn--soft { background: var(--grey); color: var(--ink); }
.btn--soft:hover { background: var(--navy-soft); color: var(--ink); }
.btn--white { background: var(--white); color: var(--ink); }
.btn--white:hover { background: var(--tan-soft); color: var(--ink); }
.btn--sm { padding: 0.6rem 1.1rem; font-size: 0.92rem; }
.btns { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.6rem; }

/* 05 Hero */
.hero { padding: clamp(3rem, 2.4rem + 3vw, 4.6rem) 0 0; background: var(--navy); color: #cbd3e1; }
.hero h1 { color: #fff; }
.hero .tagline { background: rgba(255,255,255,0.1); color: #ffc2a3; }
.hero__grid { display: grid; gap: 2.4rem; align-items: center; }
@media (min-width: 920px) { .hero__grid { grid-template-columns: 1.05fr 0.95fr; gap: 3.4rem; } }
.hero p.lede { font-size: var(--f1); line-height: 1.5; max-width: 36ch; }
.hero__img img, .hero__img .img-placeholder { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--r); }
.hero :focus-visible { outline-color: #fff; }
.hero .btn--soft { background: rgba(255,255,255,0.12); color: #fff; }
.hero .btn--soft:hover { background: #fff; color: var(--ink); }
.choose { display: grid; gap: 0.8rem; margin-top: clamp(2.4rem, 2rem + 2vw, 3.4rem); transform: translateY(50%); }
@media (max-width: 759px) { .choose { transform: none; padding-bottom: 2.4rem; } }
@media (min-width: 760px) { .choose { grid-template-columns: repeat(3, 1fr); } }
.choose a { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.3rem 1.4rem; border-radius: var(--r); background: var(--white); color: var(--ink); text-decoration: none; box-shadow: 0 16px 30px -18px rgba(22,35,59,0.55); border: 1px solid var(--line); }
.choose a:hover { border-color: var(--tan-dark); }
.choose span { display: block; font-size: 0.85rem; color: var(--muted); }
.choose b { display: block; font-size: 1.15rem; }
.choose svg { width: 22px; height: 22px; flex: none; color: var(--tan-dark); }
.after-choose { padding-top: calc(var(--pad-y) + 3rem); }
@media (max-width: 759px) { .after-choose { padding-top: var(--pad-y); } }

/* 06 Page heads */
.phead { padding-block: clamp(2.8rem, 2.2rem + 3vw, 4.4rem); background: var(--grey); }
.phead h1 { font-size: clamp(2rem, 1.5rem + 2.4vw, 3.3rem); max-width: 20ch; }
.phead p { font-size: 1.1rem; max-width: 58ch; }
.crumbs { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0 0 1rem; padding: 0; list-style: none; font-size: 0.86rem; color: var(--muted); }
.crumbs li + li::before { content: "›"; margin-right: 0.4rem; }

/* 07 Sections */
.sec { padding-block: var(--pad-y); }
.sec--grey { background: var(--grey); }
.sec--navy { background: var(--navy); color: #cbd3e1; }
.sec--navy h2, .sec--navy h3, .sec--navy b { color: #fff; }
.sec--navy a:not(.btn) { color: #fff; }
.sec--navy .tagline { background: rgba(255,255,255,0.1); color: #ffc2a3; }
.sec--navy :focus-visible { outline-color: #fff; }
.feature { display: grid; gap: 2.2rem; align-items: center; }
@media (min-width: 880px) { .feature { grid-template-columns: 1fr 1fr; gap: 4rem; } .feature--flip > :first-child { order: 2; } }
.feature > * { min-width: 0; }
.feature img, .feature .img-placeholder { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: var(--r); }
.ticks { margin: 1.2rem 0 0; padding: 0; list-style: none; display: grid; gap: 0.6rem; }
.ticks li { position: relative; padding-left: 1.9rem; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 0.3em; width: 1.1rem; height: 1.1rem; border-radius: 50%; background: var(--tan-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23b2461a' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 5 5 9-10'/%3E%3C/svg%3E") center / 0.7rem no-repeat; }
.sep { height: clamp(3rem, 2.4rem + 3vw, 5rem); }
.readout { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 880px) { .readout { grid-template-columns: 0.8fr 1.2fr; gap: 3.4rem; } }
.readout img, .readout .img-placeholder { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; border-radius: var(--r); }
.chip { display: inline-flex; flex-wrap: wrap; gap: 0.4rem 1rem; margin-top: 0.4rem; padding: 1rem 1.2rem; border-radius: 12px; background: var(--navy-2); color: #fff; font-size: 0.95rem; }
.chip b { color: #ffc2a3; font-size: 1.25rem; }
.cards { display: grid; gap: 1rem; }
@media (min-width: 760px) { .cards { grid-template-columns: repeat(2, 1fr); } }
.card { padding: 1.5rem; border-radius: var(--r); background: var(--white); border: 1px solid var(--line); }
.card h3 { font-size: 1.15rem; margin-bottom: 0.35rem; }
.card p { margin: 0; font-size: var(--f-sm); }
.map { display: block; width: 100%; height: clamp(320px, 38vw, 460px); border-radius: var(--r); background: var(--navy-soft); }
.where { position: relative; }
.where__card { margin-top: 1rem; padding: 1.6rem; border-radius: var(--r); background: var(--white); box-shadow: 0 16px 34px -20px rgba(22,35,59,0.55); }
@media (min-width: 880px) { .where__card { position: absolute; left: 2rem; bottom: 2rem; max-width: 360px; margin: 0; } }

/* 08 Home-office calculator (signature) */
.hoc { display: grid; gap: 2rem; align-items: start; }
@media (min-width: 940px) { .hoc { grid-template-columns: 1.2fr 0.8fr; gap: 3rem; } }
.hoc__form { padding: clamp(1.3rem, 1rem + 1.6vw, 2.2rem); border-radius: var(--r); background: var(--grey); }
.hoc__form fieldset { margin: 0 0 1.4rem; padding: 0; border: 0; }
.hoc__form legend { margin-bottom: 0.8rem; padding: 0; font-weight: 600; color: var(--ink); }
.rows { display: grid; gap: 0.6rem; }
.qty { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 1rem; padding: 0.7rem 0.9rem; border-radius: 10px; background: var(--white); }
.qty label { font-weight: 500; color: var(--ink); }
.qty label small { display: block; font-size: 0.8rem; font-weight: 400; color: var(--muted); }
.qty input { width: 4.6rem; text-align: center; }
.hoc__out { position: sticky; top: 100px; padding: 1.8rem; border-radius: var(--r); background: var(--navy); color: #cbd3e1; }
.hoc__out h2 { color: #fff; font-size: 1.3rem; }
.hoc__out .big { display: block; margin: 0.3rem 0; font-size: clamp(2.4rem, 1.8rem + 2.4vw, 3.4rem); font-weight: 700; color: #fff; line-height: 1; letter-spacing: -0.03em; }
.hoc__out .unit { color: #ffc2a3; font-weight: 600; }
.hoc__out dl { display: grid; grid-template-columns: 1fr auto; gap: 0.4rem 1rem; margin: 1.2rem 0 0; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,0.18); font-size: var(--f-sm); }
.hoc__out dt { margin: 0; }
.hoc__out dd { margin: 0; color: #fff; font-weight: 600; text-align: right; }
.hoc__out p { margin-top: 1rem; font-size: 0.85rem; }

/* 09 FAQ */
.faq { display: grid; gap: 0.7rem; max-width: 860px; }
.cq { border-radius: 12px; background: var(--white); border: 1px solid var(--line); }
.cq summary { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.1rem 1.3rem; font-weight: 600; color: var(--ink); list-style: none; }
.cq summary::after { content: ""; flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--tan-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23b2461a' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M12 6v12M6 12h12'/%3E%3C/svg%3E") center / 14px no-repeat; transition: transform 0.2s; }
.cq[open] summary::after { transform: rotate(45deg); }
.cq > div { padding: 0 1.3rem 1.2rem; }

/* 10 Form & contact */
.form { display: grid; gap: 1.1rem; margin-top: 1.2rem; }
.field--full, .form__end { grid-column: 1 / -1; }
.field label { font-weight: 600; color: var(--ink); font-size: 0.95rem; }
.req { color: var(--tan-dark); }
.opt { font-weight: 400; color: var(--muted); }
input[type="text"], input[type="tel"], input[type="email"], input[type="number"], select, textarea { width: 100%; padding: 0.8rem 0.95rem; font: inherit; color: var(--ink); background: var(--white); border: 1px solid #c9c6bf; border-radius: 10px; }
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='%2316233b' stroke-width='2.4'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.9rem center; background-size: 15px; padding-right: 2.4rem; }
textarea { min-height: 140px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--navy); }
.form-note { margin: 0.5rem 0 0; font-size: 0.85rem; color: var(--muted); }
.contact { display: grid; gap: 2.4rem; align-items: start; }
@media (min-width: 920px) { .contact { grid-template-columns: 1.3fr 0.7fr; gap: 3.4rem; } }
.contact > * { min-width: 0; }
.side { display: grid; gap: 1rem; }
@media (min-width: 920px) { .side { position: sticky; top: 100px; } }
.side__call { padding: 1.6rem; border-radius: var(--r); background: var(--navy); color: #cbd3e1; }
.side__call a { display: block; margin: 0.3rem 0 0.6rem; color: #fff; font-size: 1.6rem; font-weight: 700; text-decoration: none; letter-spacing: -0.02em; }
.side__call :focus-visible { outline-color: #fff; }
.side .card { font-size: var(--f-sm); }
.side .map { height: 260px; }

/* 11 Footer */
.ft { background: var(--grey); border-top: 1px solid var(--line); font-size: var(--f-sm); }
.ft__main { display: grid; gap: 2rem; padding-block: 3.2rem 2rem; }
@media (min-width: 820px) { .ft__main { grid-template-columns: 1.4fr 1fr 1fr; align-items: start; } }
.ft__phone { display: inline-block; margin: 0.2rem 0 0.6rem; color: var(--ink); font-size: clamp(1.7rem, 1.4rem + 1.4vw, 2.4rem); font-weight: 700; letter-spacing: -0.03em; text-decoration: none; }
.ft h2 { margin: 0 0 0.6rem; font-size: 0.95rem; }
.ft ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 0.35rem; }
.ft a { color: var(--ink); }
.ft__base { padding-block: 1.1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.82rem; }

/* 12 Images */
.img-placeholder { background: var(--navy-soft); border: 1px dashed #a9b4c7; border-radius: var(--r); color: var(--muted); }
.img-placeholder b { color: var(--ink); }
@media (max-width: 479px) { .lg-city { display: none; } }