/* 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; } }

/* ==========================================================================
   DeltaBrush HVAC Solutions — deltahvac.xyz
   THE DEVICE: the corner flag. A filled crimson triangle sits in the top-right
   corner of every block, image and FAQ item, like a folded corner on a card.
   Blocks reserve space on the right so text never runs under it.
   01 Tokens · 02 Base · 03 Header (stacked right column) · 04 Phone strip
   05 Buttons · 06 Blocks (the device) · 07 Hero · 08 Page heads · 09 Sections
   10 The garage (signature) · 11 FAQ · 12 Form & contact · 13 Footer · 14 Images
   ========================================================================== */

/* 01 Tokens */
:root {
  --paper: #f0efe9; --band: #e0ded4; --white: #ffffff;
  --ink: #333b2f; --ink-2: #4a543f; --ink-l: #9aa094;
  --bg2: #a4161a; --bg-d: #7e1114; --bg-l: #fbe9e9;
  --text: #454a41; --muted: #5f645a; --line: #cbc9bd;
  --focus: #a4161a; --err: #7e1114;
  --disp: "Coda", system-ui, -apple-system, "Segoe UI", sans-serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --f-sm: 0.93rem; --f-xs: 0.78rem; --f0: clamp(1rem, 0.96rem + 0.2vw, 1.07rem);
  --f1: clamp(1.12rem, 1.03rem + 0.42vw, 1.3rem);
  --f2: clamp(1.4rem, 1.16rem + 1.1vw, 1.98rem); --f3: clamp(1.8rem, 1.36rem + 2.2vw, 2.88rem);
  --r: 0px; --flag: 20px; --lh: 1.78; --wrap: 1100px; --col: 62ch;
  --pad-y: clamp(2.7rem, 2.2rem + 2.7vw, 4.3rem);
}

/* 02 Base */
body { background: var(--paper); color: var(--text); font-family: var(--sans); font-size: var(--f0); line-height: var(--lh); }
h1, h2, h3 { margin: 0 0 0.48em; font-family: var(--disp); color: var(--ink); font-weight: 800; line-height: 1.22; letter-spacing: -0.01em; text-wrap: balance; }
h1 { font-size: var(--f3); }
h2 { font-size: var(--f2); }
h3 { font-size: var(--f1); line-height: 1.32; }
p { margin: 0 0 0.9em; }
p:last-child { margin-bottom: 0; }
a { color: var(--bg-d); 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; }
li { margin-bottom: 0.32rem; }
.wrap { width: min(100% - 1.8rem, var(--wrap)); margin-inline: auto; }
.col > * { max-width: var(--col); }
.colc { max-width: var(--col); }
.wrap > .colc { margin-bottom: 1.8rem; }
.mark { display: block; margin-bottom: 0.5rem; font-size: 0.69rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bg-d); }

/* 03 Header — logo left, a stacked column on the right */
.hd { position: sticky; top: 0; z-index: 40; background: var(--white); border-bottom: 3px solid var(--ink); }
.hd__bar .wrap { display: flex; align-items: center; gap: 0.8rem; min-height: 58px; }
.db-logo { display: inline-flex; align-items: center; gap: 0.6rem; margin-right: auto; color: var(--ink); text-decoration: none; }
.db-logo svg { width: 30px; height: 30px; flex: none; }
.db-logo b { display: block; color: var(--ink); font-family: var(--disp); font-size: 1.1rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.14; }
.db-logo small { display: block; font-family: var(--sans); font-size: 0.52rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: var(--bg-d); }
.hd__stack { display: contents; }
.hd__top { display: none; }
.nav-toggle { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 40px; height: 40px; padding: 0; border: 0; background: var(--ink); color: #fff; cursor: pointer; }
.nav-toggle svg { width: 18px; height: 18px; }
.dbnav { display: none; }
@media (max-width: 919px) {
  .hd__bar .btn { display: none; }
  .dbnav { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; padding: 0.3rem 0.9rem 1rem; background: var(--white); border-bottom: 3px solid var(--ink); }
  .dbnav.is-open { display: flex; }
  .dbnav a { padding: 0.78rem 0.2rem; border-bottom: 1px solid var(--line); color: var(--ink); font-family: var(--disp); font-size: 1.08rem; font-weight: 800; text-decoration: none; }
  .dbnav a[aria-current="page"] { color: var(--bg-d); }
}
@media (max-width: 400px) { .db-logo small { display: none; } }
@media (min-width: 920px) {
  .nav-toggle { display: none; }
  .hd__bar .wrap { align-items: stretch; min-height: 0; padding-block: 0; }
  .db-logo { padding-block: 0.9rem; }
  .hd__stack { display: flex; flex-direction: column; align-items: flex-end; justify-content: center; gap: 0.15rem; padding-block: 0.6rem; }
  .hd__top { display: flex; align-items: center; gap: 1rem; font-size: 0.83rem; color: var(--muted); }
  .hd__top a { color: var(--ink); font-family: var(--disp); font-size: 1.14rem; font-weight: 800; text-decoration: none; }
  .hd__top a:hover { color: var(--bg-d); }
  .hd__row { display: flex; align-items: center; gap: 1.3rem; }
  .dbnav { display: flex; gap: 1.3rem; }
  .dbnav a { position: relative; padding: 0.3rem 0 0.25rem; color: var(--text); font-size: 0.96rem; font-weight: 600; text-decoration: none; white-space: nowrap; }
  .dbnav a:hover { color: var(--ink); }
  .dbnav a[aria-current="page"] { color: var(--ink); font-weight: 700; box-shadow: inset 0 -3px 0 0 var(--bg2); }
}

/* 04 Phone strip */
.dbph { display: grid; grid-template-columns: 1fr 1fr; background: var(--bg2); }
.dbph a { display: flex; align-items: center; justify-content: center; gap: 0.45rem; padding: 0.6rem 0.7rem; color: #fff; font-family: var(--disp); font-size: 1.1rem; font-weight: 800; text-decoration: none; white-space: nowrap; }
.dbph a + a { background: var(--ink); }
.dbph svg { width: 0.85em; height: 0.85em; flex: none; }
.dbph :focus-visible { outline-color: #fff; outline-offset: -4px; }
@media (min-width: 920px) { .dbph { display: none; } }
@media (max-width: 360px) { .dbph a { padding-inline: 0.4rem; font-size: 1rem; } }

/* 05 Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.6rem 1.3rem; border: 2px solid var(--bg2); background: var(--bg2); color: #fff; font-family: var(--disp); font-size: 0.98rem; font-weight: 800; line-height: 1.5; text-decoration: none; white-space: nowrap; cursor: pointer; transition: background-color 0.18s, border-color 0.18s; }
.btn:hover { background: var(--bg-d); border-color: var(--bg-d); color: #fff; }
.btn svg { width: 1em; height: 1em; flex: none; }
.btn--ink { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn--ink:hover { background: var(--ink-2); border-color: var(--ink-2); color: #fff; }
.btn--line { background: transparent; border-color: var(--ink); color: var(--ink); }
.btn--line:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn--paper, .sec--ink a.btn--paper, .fl--ink a.btn--paper { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.btn--paper:hover, .sec--ink a.btn--paper:hover, .fl--ink a.btn--paper:hover { background: var(--band); border-color: var(--band); color: var(--ink); }
@media (max-width: 460px) { .btn { white-space: normal; text-align: center; } }
.btns { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.6rem; }

/* 06 Blocks — the corner flag */
.fl { position: relative; padding: 1.5rem 2rem 1.4rem 1.4rem; background: var(--white); border: 1px solid var(--line); overflow: hidden; }
.fl::before { content: ""; position: absolute; top: 0; right: 0; width: 0; height: 0; border-left: var(--flag) solid transparent; border-top: var(--flag) solid var(--bg2); pointer-events: none; }
.fl > *:last-child { margin-bottom: 0; }
.fl--ink { background: var(--ink); border-color: var(--ink); color: #c9cdc3; }
.fl--ink::before { border-top-color: #e58a8c; }
.fl--ink h2, .fl--ink h3, .fl--ink b, .fl--ink strong { color: #fff; }
.fl--ink .mark { color: #e58a8c; }
.fl--ink a:not(.btn) { color: #fff; }
.fl--ink :focus-visible { outline-color: #e58a8c; }
.fl--tint { background: var(--bg-l); border-color: #eec9c9; }
.fls { display: grid; gap: 1.5rem; }
.fls > * { min-width: 0; }
@media (min-width: 700px) { .fls--2 { grid-template-columns: repeat(2, 1fr); gap: 1.7rem; } }
@media (min-width: 980px) { .fls--3 { grid-template-columns: repeat(3, 1fr); gap: 1.7rem; } .fls--2b { grid-template-columns: repeat(2, 1fr); gap: 2rem; } }
.figfl { position: relative; margin: 0; overflow: hidden; border: 1px solid var(--line); }
.figfl::before { content: ""; position: absolute; top: 0; right: 0; z-index: 1; width: 0; height: 0; border-left: var(--flag) solid transparent; border-top: var(--flag) solid var(--bg2); pointer-events: none; }
.figfl img, .figfl .img-placeholder { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.figfl--wide img, .figfl--wide .img-placeholder { aspect-ratio: 16 / 9; }
.figfl--gap { margin-top: 1.9rem; }

/* 07 Hero — two columns of text, no image */
.hero { padding-block: clamp(2.8rem, 2.2rem + 3vw, 4.4rem); background: var(--band); }
.hero__grid { display: grid; gap: 1.6rem 3rem; align-items: end; }
.hero__grid > * { min-width: 0; }
.hero .lede { font-size: var(--f1); }
@media (min-width: 900px) { .hero__grid { grid-template-columns: 1.1fr 0.9fr; } }
.heroimg { padding-block: 0; background: linear-gradient(var(--band) 45%, var(--paper) 45%); }

/* 08 Page heads */
.phead { padding-block: clamp(2.1rem, 1.7rem + 1.9vw, 3.2rem); background: var(--ink); color: #c9cdc3; }
.phead h1 { color: #fff; }
.phead .mark { color: #e58a8c; }
.phead a:not(.btn) { color: #fff; }
.phead strong { color: #fff; }
.phead :focus-visible { outline-color: #e58a8c; }
.crumbs { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 0 0 0.85rem; padding: 0; list-style: none; font-size: 0.76rem; font-weight: 700; }
.crumbs li + li::before { content: "\00bb"; margin-right: 0.45rem; color: #e58a8c; }

/* 09 Sections */
.sec { padding-block: var(--pad-y); }
.sec--paper { background: var(--paper); }
.sec--white { background: var(--white); }
.sec--band { background: var(--band); }
.sec--ink { background: var(--ink); color: #c9cdc3; }
.sec--ink h2, .sec--ink h3, .sec--ink b, .sec--ink strong { color: #fff; }
.sec--ink .mark { color: #e58a8c; }
.sec--ink a:not(.btn) { color: #fff; }
.sec--ink :focus-visible { outline-color: #e58a8c; }
.sec--white .fl { background: var(--paper); }
.head { max-width: var(--col); margin-bottom: 1.9rem; }
.kl { display: grid; gap: 1.3rem 2.2rem; margin: 0; padding: 0; list-style: none; }
@media (min-width: 740px) { .kl--2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .kl--3 { grid-template-columns: repeat(3, 1fr); } }
.kl > li { margin: 0; padding-top: 0.75rem; border-top: 3px solid var(--ink); min-width: 0; }
.kl b { display: block; color: var(--ink); font-family: var(--disp); font-size: var(--f1); font-weight: 800; }
.kl p { margin: 0.2rem 0 0; font-size: var(--f-sm); }
.sec--ink .kl > li { border-color: #e58a8c; }
.sec--ink .kl b { color: #fff; }
.tbl { width: 100%; border-collapse: collapse; font-size: var(--f-sm); text-align: left; background: var(--white); border: 1px solid var(--line); }
.tbl th, .tbl td { padding: 0.72rem 0.9rem; vertical-align: top; border-bottom: 1px solid var(--line); }
.tbl thead th { background: var(--ink); color: #fff; font-family: var(--sans); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; }
.tbl tbody th { font-weight: 700; color: var(--ink); width: 34%; }
.tbl tr:last-child th, .tbl tr:last-child td { border-bottom: 0; }
.scroll { overflow-x: auto; }
.map { display: block; width: 100%; height: clamp(300px, 34vw, 380px); background: var(--band); border: 1px solid var(--line); }
.split { display: grid; gap: 2.3rem; 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; }

/* 10 The garage (signature) */
.gr__set { position: relative; padding: 1.5rem 2rem 1.4rem 1.4rem; background: var(--white); border: 1px solid var(--line); overflow: hidden; }
.gr__set::before { content: ""; position: absolute; top: 0; right: 0; width: 0; height: 0; border-left: var(--flag) solid transparent; border-top: var(--flag) solid var(--bg2); pointer-events: none; }
.gr__cols { display: grid; gap: 1.2rem; }
@media (min-width: 760px) { .gr__cols { grid-template-columns: 1.06fr 0.94fr; gap: 2rem; } }
.gr__set fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.gr__set legend { display: block; margin-bottom: 0.55rem; padding: 0; font-family: var(--disp); font-size: 1.04rem; font-weight: 800; color: var(--ink); }
.opts { display: grid; gap: 0.32rem; }
.opts label { position: relative; display: block; }
.opts input { position: absolute; opacity: 0; }
.opts span { display: block; padding: 0.52rem 0.85rem; background: var(--paper); border: 1px solid var(--line); font-size: var(--f-sm); cursor: pointer; }
.opts input:checked + span { background: var(--ink); border-color: var(--ink); color: #fff; }
.opts input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 2px; }
.gr__out { display: grid; gap: 1.6rem; margin-top: 2rem; }
.gr__out > * { min-width: 0; }
.gr__flag { position: relative; padding: 1.5rem 2rem 1.4rem 1.4rem; background: var(--bg2); border: 1px solid var(--bg2); color: #fff; overflow: hidden; }
.gr__flag::before { content: ""; position: absolute; top: 0; right: 0; width: 0; height: 0; border-left: var(--flag) solid transparent; border-top: var(--flag) solid var(--ink); pointer-events: none; }
.gr__flag b { display: block; margin-bottom: 0.3rem; font-family: var(--disp); font-size: var(--f1); font-weight: 800; color: #fff; }
.gr__flag strong { color: #fff; }
.gr__flag p { font-size: var(--f-sm); }
.gr__flag :focus-visible { outline-color: #fff; }
.gr__out .fl p, .gr__out .fl ul, .gr__out .fl ol { font-size: var(--f-sm); }

/* 11 FAQ */
.dbq { position: relative; background: var(--white); border: 1px solid var(--line); overflow: hidden; }
.dbq::before { content: ""; position: absolute; top: 0; right: 0; width: 0; height: 0; border-left: 15px solid transparent; border-top: 15px solid var(--bg2); pointer-events: none; }
.faq { display: grid; gap: 0.8rem; max-width: 880px; margin-top: 1.8rem; }
.dbq summary { display: flex; justify-content: space-between; gap: 1.4rem; padding: 0.95rem 1.5rem 0.95rem 1.1rem; font-family: var(--disp); font-size: 1.02rem; font-weight: 800; line-height: 1.42; color: var(--ink); list-style: none; cursor: pointer; }
.dbq summary::after { content: "+"; flex: none; font-family: var(--sans); color: var(--bg-d); }
.dbq[open] summary { border-bottom: 1px solid var(--line); }
.dbq[open] summary::after { content: "\2212"; }
.dbq > div { padding: 1rem 1.1rem 1.15rem; }

/* 12 Form & contact */
.form { display: grid; gap: 1rem 1.3rem; margin-top: 1.3rem; }
@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: 0.95rem; }
.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: 0.72rem 0.9rem; font: inherit; color: var(--ink); background: var(--white); border: 1px solid #b5b2a4; }
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='%23333b2f' stroke-width='2.6'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.85rem 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-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 0.9rem; background: var(--white); border: 1px solid #b5b2a4; 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: 0.85rem; color: var(--muted); }
.contact { display: grid; gap: 2.3rem; align-items: start; }
@media (min-width: 920px) { .contact { grid-template-columns: 1.08fr 0.92fr; gap: 2.6rem; } }
.contact > * { min-width: 0; }
.side { display: grid; gap: 1.5rem; }

/* 13 Footer */
.ft { background: var(--ink); color: #b0b6a8; font-size: var(--f-sm); border-top: 6px solid var(--bg2); }
.ft a { color: #fff; }
.ft :focus-visible { outline-color: #e58a8c; }
.ft__row { display: grid; gap: 1.5rem; padding-block: 2.8rem 1.7rem; }
@media (min-width: 820px) { .ft__row { grid-template-columns: 1.5fr 1fr 1fr; } }
.ft__name { margin: 0 0 0.5rem; font-family: var(--disp); font-size: 1.1rem; font-weight: 800; color: #fff; }
.ft h2 { margin: 0 0 0.55rem; font-family: var(--sans); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.19em; text-transform: uppercase; color: #e58a8c; }
.ft ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 0.32rem; }
.ft__base { padding-block: 0.95rem; border-top: 1px solid var(--ink-2); font-size: 0.81rem; }

/* 14 Images */
.img-placeholder { background: var(--band); color: var(--text); }
.img-placeholder b { color: var(--ink); overflow-wrap: anywhere; }