/* Brand: hvacmastermo.homes — HVACMASTER (ns: hva75) */
:root {
  --hva75-max: 1100px;
  --hva75-radius: 10px;
  --hva75-ease: 200ms ease;
  --hva75-steel: #8a9aa8;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hva75-reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: var(--dna-font-body, "DM Sans", system-ui, sans-serif);
  color: var(--dna-ink, #e8eef2);
  background: var(--dna-bg, #12161a);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, h4 {
  font-family: var(--dna-font-display, Urbanist, system-ui, sans-serif);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 0.55em;
  font-weight: 650;
}
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }

.hva75-skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--dna-accent, var(--hva75-steel));
  color: #12161a;
  padding: 10px 16px;
  z-index: 1000;
}
.hva75-skip:focus { left: 12px; top: 12px; }

.hva75-shell {
  width: min(100% - 2.4rem, var(--hva75-max));
  margin-inline: auto;
}

.hva75-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 44px;
  padding: 0.65rem 1.1rem;
  border-radius: 8px;
  border: 1px solid transparent;
  text-decoration: none;
  font: inherit;
  font-weight: 650;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background var(--hva75-ease), border-color var(--hva75-ease), color var(--hva75-ease);
}
.hva75-btn:focus-visible,
.hva75-burger:focus-visible,
a:focus-visible,
input:focus-visible,
button:focus-visible {
  outline: 2px solid var(--dna-accent, var(--hva75-steel));
  outline-offset: 3px;
}
.hva75-btn--solid {
  background: var(--dna-accent, var(--hva75-steel));
  color: #12161a;
}
.hva75-btn--solid:hover { filter: brightness(1.08); }
.hva75-btn--ghost {
  background: transparent;
  border-color: var(--dna-line, #2c343c);
  color: var(--dna-ink, #e8eef2);
}
.hva75-btn--ghost:hover {
  border-color: var(--dna-accent, var(--hva75-steel));
  color: var(--dna-accent-ink, #c5d2dc);
}

.hva75-kicker {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--dna-accent, var(--hva75-steel));
  margin-bottom: 0.7rem;
}
.hva75-lede {
  font-size: 1.02rem;
  color: var(--dna-ink-soft, #a8b4be);
  max-width: 36rem;
}

/* Header — centered */
.hva75-top {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--dna-bg, #12161a) 90%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--dna-line, #2c343c);
}
.hva75-bar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  min-height: 70px;
  padding-block: 0.55rem;
}
.hva75-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  justify-self: start;
}
.hva75-brand b {
  display: block;
  font-family: var(--dna-font-display, Urbanist, sans-serif);
  font-size: 1rem;
  letter-spacing: 0.04em;
}
.hva75-brand small {
  display: block;
  color: var(--dna-ink-soft, #a8b4be);
  font-size: 0.75rem;
  letter-spacing: 0;
}
.hva75-links {
  display: flex;
  gap: 1.2rem;
  justify-content: center;
}
.hva75-links a {
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--dna-ink-soft, #a8b4be);
  font-weight: 550;
}
.hva75-links a:hover,
.hva75-links a[aria-current="page"] {
  color: var(--dna-ink, #e8eef2);
}
.hva75-bar-end {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.hva75-burger {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--dna-line, #2c343c);
  border-radius: 8px;
  background: transparent;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}
.hva75-burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--dna-ink, #e8eef2);
}
.hva75-drawer {
  display: none;
  flex-direction: column;
  gap: 0.85rem;
  padding-bottom: 1rem;
}
.hva75-drawer.is-open { display: flex; }
.hva75-drawer[hidden] { display: none !important; }
.hva75-drawer a { text-decoration: none; color: var(--dna-ink-soft, #a8b4be); }

@media (max-width: 880px) {
  .hva75-bar { grid-template-columns: 1fr auto; }
  .hva75-links,
  .hva75-bar-end .hva75-btn { display: none; }
  .hva75-burger { display: inline-flex; }
}

/* Hero stacked — full-bleed airflow plane */
.hva75-hero.hero {
  position: relative;
  min-height: min(88vh, 720px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  border-bottom: 1px solid var(--dna-line, #2c343c);
}
.hva75-hero-photo {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hva75-hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.hva75-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(18, 22, 26, 0.35) 0%, rgba(18, 22, 26, 0.82) 72%, var(--dna-bg, #12161a) 100%),
    linear-gradient(90deg, rgba(18, 22, 26, 0.55) 0%, transparent 55%);
  pointer-events: none;
}
.hva75-hero .hero-inner {
  position: relative;
  z-index: 2;
  width: min(100% - 2.4rem, var(--hva75-max));
  margin: 0 auto;
  padding: 4.5rem 0 3.2rem;
  text-align: center;
}
.hva75-hero h1 {
  font-size: clamp(2rem, 4.6vw, 3.15rem);
  max-width: 16ch;
  margin-inline: auto;
}
.hva75-hero .sub {
  color: var(--dna-ink-soft, #a8b4be);
  max-width: 34rem;
  margin: 0 auto 1.35rem;
  font-size: 1.05rem;
}
.hva75-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  justify-content: center;
}
.hva75-flow-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dna-ink-soft, #a8b4be);
}
.hva75-flow-label::before {
  content: "";
  width: 36px;
  height: 1px;
  background: var(--dna-accent, var(--hva75-steel));
}

/* Sections */
.hva75-sec {
  padding: 4.2rem 0;
  border-bottom: 1px solid var(--dna-line, #2c343c);
}
.hva75-sec--soft {
  background: color-mix(in srgb, var(--dna-surface, #1a2026) 70%, transparent);
}
.hva75-sec-head { margin-bottom: 2rem; }
.hva75-sec-head h2 { font-size: clamp(1.55rem, 3vw, 2.05rem); max-width: 18ch; }

/* Services accordion cards */
.hva75-svc-grid[data-services-catalog] {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.hva75-svc-grid .service-item {
  background: var(--dna-surface, #1a2026);
  border: 1px solid var(--dna-line, #2c343c);
  border-radius: var(--hva75-radius);
  padding: 1rem 1.15rem;
  transition: border-color var(--hva75-ease);
}
.hva75-svc-grid .service-item.is-open {
  border-color: color-mix(in srgb, var(--dna-accent, var(--hva75-steel)) 55%, var(--dna-line, #2c343c));
}
.hva75-svc-grid .service-item h3 {
  margin: 0;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
/* Body open/close handled by SiteDNA accordion (max-height + .is-open). */
.hva75-svc-grid .service-item-body {
  color: var(--dna-ink-soft, #a8b4be);
  max-width: 42rem;
}
.hva75-svc-grid .service-item-body p { margin: 0.75rem 0 1rem; }
.hva75-svc-ic {
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  align-items: center;
  justify-content: center;
  margin-right: 0.55rem;
  color: var(--dna-accent, var(--hva75-steel));
  vertical-align: middle;
}
.hva75-svc-ic .dna-ic { width: 1.25rem; height: 1.25rem; }

/* Case studies / process timeline */
.hva75-cases {
  display: grid;
  gap: 1rem;
}
@media (min-width: 800px) {
  .hva75-cases { grid-template-columns: 1.1fr 0.9fr; align-items: start; }
}
.hva75-case-visual {
  border-radius: var(--hva75-radius);
  overflow: hidden;
  border: 1px solid var(--dna-line, #2c343c);
}
.hva75-case-visual img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.hva75-timeline.line {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 1px solid var(--dna-line, #2c343c);
  margin-left: 0.65rem;
  padding-left: 1.25rem;
}
.hva75-timeline .node {
  position: relative;
  padding: 0 0 1.35rem;
}
.hva75-timeline .node:last-child { padding-bottom: 0; }
.hva75-timeline .dot {
  position: absolute;
  left: -1.85rem;
  top: 0.15rem;
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: var(--dna-surface, #1a2026);
  border: 1px solid var(--dna-accent, var(--hva75-steel));
  color: var(--dna-accent, var(--hva75-steel));
  font-size: 0.7rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}
.hva75-timeline h3 { font-size: 1rem; margin-bottom: 0.25rem; }
.hva75-timeline p {
  margin: 0;
  color: var(--dna-ink-soft, #a8b4be);
  font-size: 0.95rem;
}

/* Testimonials + metric bar */
.hva75-quotes {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.75rem;
}
@media (min-width: 720px) {
  .hva75-quotes { grid-template-columns: 1fr 1fr; }
}
.hva75-quote {
  background: var(--dna-surface, #1a2026);
  border: 1px solid var(--dna-line, #2c343c);
  border-radius: var(--hva75-radius);
  padding: 1.25rem 1.35rem;
}
.hva75-quote p {
  margin: 0 0 0.85rem;
  color: var(--dna-ink, #e8eef2);
  font-size: 1.02rem;
}
.hva75-quote cite {
  font-style: normal;
  font-size: 0.85rem;
  color: var(--dna-ink-soft, #a8b4be);
}
.hva75-metrics.bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  border-top: 1px solid var(--dna-line, #2c343c);
  padding-top: 1.35rem;
}
.hva75-metrics .m {
  text-align: left;
}
.hva75-metrics .m b {
  display: block;
  font-family: var(--dna-font-display, Urbanist, sans-serif);
  font-size: 1.15rem;
  color: var(--dna-accent-ink, #c5d2dc);
  margin-bottom: 0.2rem;
}
.hva75-metrics .m span {
  font-size: 0.82rem;
  color: var(--dna-ink-soft, #a8b4be);
}
@media (max-width: 700px) {
  .hva75-metrics.bar { grid-template-columns: 1fr 1fr; }
}

/* About quote-led */
.hva75-about-grid {
  display: grid;
  gap: 2rem;
}
@media (min-width: 860px) {
  .hva75-about-grid { grid-template-columns: 1fr 1fr; align-items: start; }
}
.hva75-about-quote blockquote {
  margin: 0 0 1.25rem;
  font-family: var(--dna-font-display, Urbanist, sans-serif);
  font-size: clamp(1.35rem, 2.6vw, 1.75rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--dna-ink, #e8eef2);
}
.hva75-about-quote blockquote span {
  color: var(--dna-accent, var(--hva75-steel));
}
.hva75-who {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hva75-who .av {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, var(--dna-accent, var(--hva75-steel)), transparent 55%),
    var(--dna-surface-2, #222a32);
  border: 1px solid var(--dna-line, #2c343c);
}
.hva75-who b { display: block; font-size: 0.95rem; }
.hva75-who small {
  color: var(--dna-ink-soft, #a8b4be);
  font-size: 0.82rem;
}
.hva75-about-body p { color: var(--dna-ink-soft, #a8b4be); }
.hva75-about-side {
  border-radius: var(--hva75-radius);
  overflow: hidden;
  border: 1px solid var(--dna-line, #2c343c);
}
.hva75-about-side img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

/* CTA boxed */
.hva75-cta .box {
  background:
    linear-gradient(105deg, color-mix(in srgb, var(--dna-surface, #1a2026) 88%, var(--dna-accent, var(--hva75-steel))) 0%, var(--dna-surface, #1a2026) 55%),
    var(--dna-surface, #1a2026);
  border: 1px solid var(--dna-line, #2c343c);
  border-radius: 14px;
  padding: clamp(1.6rem, 4vw, 2.4rem);
  text-align: center;
}
.hva75-cta .box h2 { margin-inline: auto; max-width: 16ch; }
.hva75-cta .box p {
  color: var(--dna-ink-soft, #a8b4be);
  max-width: 32rem;
  margin: 0 auto 1.25rem;
}

/* Interior pages */
.hva75-mast {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--dna-line, #2c343c);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--dna-surface, #1a2026) 80%, transparent), transparent);
}
.hva75-crumb {
  font-size: 0.85rem;
  color: var(--dna-ink-soft, #a8b4be);
  margin-bottom: 0.85rem;
}
.hva75-crumb a { text-decoration: none; }
.hva75-mast h1 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); max-width: 16ch; }

.hva75-svc-page-grid {
  display: grid;
  gap: 1rem;
}
@media (min-width: 760px) {
  .hva75-svc-page-grid { grid-template-columns: 1fr 1fr; }
}
.hva75-svc-card {
  border: 1px solid var(--dna-line, #2c343c);
  border-radius: var(--hva75-radius);
  padding: 1.25rem;
  background: var(--dna-surface, #1a2026);
}
.hva75-svc-card h2 { font-size: 1.15rem; }
.hva75-svc-card p { margin: 0; color: var(--dna-ink-soft, #a8b4be); }
.hva75-svc-card .ic {
  color: var(--dna-accent, var(--hva75-steel));
  margin-bottom: 0.65rem;
}
.hva75-svc-card .dna-ic { width: 1.4rem; height: 1.4rem; }

.hva75-split-media {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}
@media (min-width: 800px) {
  .hva75-split-media { grid-template-columns: 1fr 1fr; }
}
.hva75-split-media figure {
  margin: 0;
  border-radius: var(--hva75-radius);
  overflow: hidden;
  border: 1px solid var(--dna-line, #2c343c);
}
.hva75-split-media figcaption {
  padding: 0.65rem 0.85rem;
  font-size: 0.82rem;
  color: var(--dna-ink-soft, #a8b4be);
  background: var(--dna-surface, #1a2026);
}

/* Contact split-left */
.contact-page {
  display: grid;
  gap: 1.5rem;
  padding: 2.5rem 0 3.5rem;
}
@media (min-width: 880px) {
  .contact-page {
    grid-template-columns: minmax(240px, 0.85fr) 1.15fr;
    align-items: start;
  }
}
.contact-info {
  display: grid;
  gap: 1rem;
}
.contact-block {
  border: 1px solid var(--dna-line, #2c343c);
  border-radius: var(--hva75-radius);
  padding: 1rem 1.1rem;
  background: var(--dna-surface, #1a2026);
}
.contact-block h3 {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dna-ink-soft, #a8b4be);
  margin: 0 0 0.35rem;
}
.contact-block p { margin: 0; }
.contact-block a { text-decoration: none; color: var(--dna-accent-ink, #c5d2dc); }

/* Compact booking */
.hva75-bk {
  border: 1px solid var(--dna-line, #2c343c);
  border-radius: 12px;
  padding: 1.35rem 1.4rem;
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--dna-surface, #1a2026) 92%, var(--dna-accent, var(--hva75-steel))), var(--dna-surface, #1a2026));
}
.hva75-bk-kicker {
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dna-accent, var(--hva75-steel));
  font-weight: 700;
}
.hva75-bk-title { font-size: 1.35rem; margin-bottom: 0.35rem; }
.hva75-bk-sub {
  color: var(--dna-ink-soft, #a8b4be);
  font-size: 0.92rem;
  margin-bottom: 1.1rem;
}
.hva75-bk-label {
  display: block;
  font-size: 0.82rem;
  margin-bottom: 0.35rem;
  color: var(--dna-ink-soft, #a8b4be);
}
.hva75-bk-row {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}
.hva75-bk-row input[type="tel"] {
  flex: 1 1 180px;
  min-height: 44px;
  border-radius: 8px;
  border: 1px solid var(--dna-line, #2c343c);
  background: var(--dna-bg, #12161a);
  color: var(--dna-ink, #e8eef2);
  padding: 0.55rem 0.85rem;
  font: inherit;
}
.hva75-bk-error {
  color: #e8a0a0;
  font-size: 0.88rem;
  margin: 0.65rem 0 0;
}
.hva75-bk-success {
  margin: 0;
  font-size: 1.05rem;
  color: var(--dna-ink, #e8eef2);
}
.hva75-bk-done { padding: 0.5rem 0; }

/* Privacy */
.hva75-prose {
  padding: 2.5rem 0 3.5rem;
  max-width: 42rem;
}
.hva75-prose h2 { font-size: 1.2rem; margin-top: 1.75rem; }
.hva75-prose p, .hva75-prose li { color: var(--dna-ink-soft, #a8b4be); }
.hva75-prose ul { padding-left: 1.1rem; list-style: disc; }
.hva75-prose li { margin-bottom: 0.35rem; }

/* Footer columns */
.hva75-footer {
  padding: 2.5rem 0 2rem;
  background: var(--dna-surface, #1a2026);
  border-top: 1px solid var(--dna-line, #2c343c);
}
.hva75-footer-grid {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 760px) {
  .hva75-footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
}
.hva75-footer h3 {
  font-size: 0.95rem;
  margin-bottom: 0.65rem;
}
.hva75-footer p,
.hva75-footer a {
  color: var(--dna-ink-soft, #a8b4be);
  font-size: 0.9rem;
  text-decoration: none;
}
.hva75-footer a:hover { color: var(--dna-ink, #e8eef2); }
.hva75-footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.hva75-copy {
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--dna-line, #2c343c);
  font-size: 0.82rem;
  color: var(--dna-ink-soft, #a8b4be);
}

/* Reveal */
.hva75-reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms ease, transform 420ms ease;
}
.hva75-reveal.is-in {
  opacity: 1;
  transform: none;
}