/* ============================================================
   Homepage — "Engineered Cool"
   Editorial precision. HVAC engineering language.
   ============================================================ */

/* ---- Break out of Astra's content container so sections render
        as full-width vertical blocks, not as columns in a grid. ---- */
body.home #content,
body.home #content > .ast-container,
body.home main#main,
body.home main#main > .ast-container,
body.home #primary {
  display: block !important;
  max-width: none !important;
  width: 100% !important;
  padding: 0 !important;
  margin: 0 !important;
  grid-template-columns: none !important;
}

body.home .site-content > .ast-container > article,
body.home .ast-no-sidebar .entry-content { margin: 0 !important; padding: 0 !important; }

body.home #page,
body.home .site { overflow-x: clip; }

/* ============================================================
   1. HERO
   ============================================================ */
.bt-hero {
  position: relative;
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(56,189,248,0.18), transparent 60%),
    radial-gradient(700px 500px at 0% 110%,   rgba(249,115,22,0.10), transparent 60%),
    linear-gradient(180deg, #07111F 0%, #0B1A2E 100%);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(5.5rem, 10vw, 9rem) 0 clamp(3.5rem, 7vw, 6rem);
}

/* faint isobaric line decoration in the background */
.bt-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(transparent 0 95%, rgba(255,255,255,0.04) 100%),
    linear-gradient(90deg, transparent 0 95%, rgba(255,255,255,0.04) 100%);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 60% 50%, #000 30%, transparent 80%);
  pointer-events: none;
  z-index: 0;
}

/* fine grain */
.bt-hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.5'/></svg>");
  opacity: 0.15;
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 0;
}

.bt-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: end;
}

@media (min-width: 1024px) {
  .bt-hero__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: var(--space-xl);
    align-items: center;
  }
}

/* eyebrow row at top */
.bt-hero__top {
  position: absolute;
  top: clamp(1rem, 3vw, 2rem);
  left: var(--container-pad);
  right: var(--container-pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  z-index: 2;
}
.bt-hero__top .dot {
  display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; background: var(--color-accent);
  margin-right: 0.5rem; vertical-align: middle;
  box-shadow: 0 0 0 0 rgba(249,115,22,0.6);
  animation: pulse 2.4s var(--ease-out) infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 0    rgba(249,115,22,0.55); }
  50%     { box-shadow: 0 0 0 10px rgba(249,115,22,0);    }
}

/* editorial display headline — fluid but capped at a sensible desktop size */
.bt-hero__headline {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5.5vw, 4.5rem);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: var(--tracking-display);
  margin: 0 0 var(--space-md);
  color: #fff;
  font-variation-settings: "wdth" 95, "opsz" 64;
}
.bt-hero__headline em {
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(120deg, var(--color-secondary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  position: relative;
}
.bt-hero__headline .br { display: block; }

.bt-hero__sub {
  font-size: var(--fs-lead);
  line-height: 1.55;
  color: rgba(255,255,255,0.78);
  max-width: 38ch;
  margin: 0 0 var(--space-md);
}

.bt-hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: var(--space-lg);
}

.bt-hero__meta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: rgba(255,255,255,0.65);
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: var(--space-sm);
}
.bt-hero__meta b { color: #fff; font-weight: 600; }

/* ---- thermostat / dial card ---- */
.bt-dial {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-elevated);
  display: grid;
  gap: var(--space-md);
}

.bt-dial__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
}
.bt-dial__head .live {
  display: inline-flex; align-items: center; gap: 0.4rem;
  color: var(--color-secondary);
}
.bt-dial__head .live::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-secondary);
  box-shadow: 0 0 8px var(--color-secondary);
}

.bt-dial__visual {
  position: relative;
  aspect-ratio: 1.1 / 1;
  display: grid;
  place-items: center;
}

/* SVG dial styles inherited via class */
.bt-dial__svg { width: 100%; height: auto; max-width: 360px; }
.bt-dial__track  { stroke: rgba(255,255,255,0.10); }
.bt-dial__arc    { stroke: url(#bt-dial-grad); stroke-linecap: round;
                   filter: drop-shadow(0 0 6px rgba(56,189,248,0.5)); }
.bt-dial__tick   { stroke: rgba(255,255,255,0.18); }
.bt-dial__tick--major { stroke: rgba(255,255,255,0.42); }
.bt-dial__needle { stroke: var(--color-accent);
                   filter: drop-shadow(0 0 8px rgba(249,115,22,0.7)); }

.bt-dial__center {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  pointer-events: none;
}
.bt-dial__temp {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9vw, 4.5rem);
  font-weight: 500;
  font-variation-settings: "wdth" 90, "opsz" 96;
  line-height: 1;
  letter-spacing: -0.04em;
  color: #fff;
}
.bt-dial__temp sup {
  font-size: 0.4em;
  vertical-align: top;
  color: var(--color-secondary);
  margin-left: 0.1em;
}
.bt-dial__temp-label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-top: 0.3rem;
}

.bt-dial__rows {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(255,255,255,0.10);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.bt-dial__row {
  background: rgba(255,255,255,0.03);
  padding: 0.875rem 1rem;
  display: flex; flex-direction: column; gap: 0.25rem;
}
.bt-dial__row .k {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}
.bt-dial__row .v {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  font-variation-settings: "wdth" 95;
  color: #fff;
  letter-spacing: -0.02em;
}
.bt-dial__row .v small {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-secondary);
  margin-left: 0.25rem;
  letter-spacing: 0.04em;
}

/* hero entrance animation */
.bt-hero__headline,
.bt-hero__sub,
.bt-hero__ctas,
.bt-hero__meta,
.bt-dial {
  opacity: 0;
  transform: translateY(14px);
  animation: bt-rise 0.9s var(--ease-out) forwards;
}
.bt-hero__headline { animation-delay: 0.05s; }
.bt-hero__sub      { animation-delay: 0.18s; }
.bt-hero__ctas     { animation-delay: 0.28s; }
.bt-hero__meta     { animation-delay: 0.38s; }
.bt-dial           { animation-delay: 0.40s; }
@keyframes bt-rise {
  to { opacity: 1; transform: none; }
}

/* ============================================================
   2. STAT STRIP
   ============================================================ */
.bt-stats {
  background: var(--color-ink);
  color: #fff;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 0;
}
.bt-stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 800px) {
  .bt-stats__grid { grid-template-columns: repeat(4, 1fr); }
}
.bt-stat {
  padding: clamp(1.25rem, 3vw, 1.75rem) var(--space-md);
  border-right: 1px solid rgba(255,255,255,0.08);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex; flex-direction: column; gap: 0.35rem;
  position: relative;
}
.bt-stat:last-child { border-right: none; }
@media (min-width: 800px) {
  .bt-stat { border-bottom: none; }
}
.bt-stat__num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  font-weight: 500;
  font-variation-settings: "wdth" 95, "opsz" 96;
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: #fff;
  font-feature-settings: "tnum";
}
.bt-stat__num .accent { color: var(--color-accent); }
.bt-stat__lbl {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
}

/* ============================================================
   3. SECTION HEADER
   ============================================================ */
.bt-sec-head {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  align-items: end;
}
@media (min-width: 800px) {
  .bt-sec-head {
    grid-template-columns: 1fr auto;
    gap: var(--space-lg);
  }
}
.bt-sec-head__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin: 0.5rem 0 0;
  font-variation-settings: "wdth" 95, "opsz" 72;
}
.bt-sec-head__title em {
  font-style: italic;
  font-weight: 400;
  color: var(--color-primary);
}
.bt-sec-head__sub {
  font-size: var(--fs-lead);
  color: var(--color-muted);
  max-width: 38ch;
  margin: 0;
}

/* ============================================================
   4. SERVICE CARDS — editorial numbered grid
   ============================================================ */
.bt-svc-grid {
  display: grid;
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
@media (min-width: 700px) {
  .bt-svc-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .bt-svc-grid { grid-template-columns: repeat(3, 1fr); }
}

.bt-svc {
  background: var(--color-bg);
  padding: clamp(1.25rem, 2.5vw, 2rem);
  display: flex; flex-direction: column;
  gap: var(--space-sm);
  position: relative;
  text-decoration: none;
  color: var(--color-text);
  transition: background 0.3s var(--ease-out), color 0.3s var(--ease-out);
  min-height: 280px;
  overflow: hidden;
}

.bt-svc__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--color-muted);
}
.bt-svc__num   { color: var(--color-ink); font-weight: 600; }

.bt-svc__title {
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 2.4vw, 1.875rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0;
  font-variation-settings: "wdth" 100, "opsz" 36;
  color: inherit;
}
.bt-svc__desc {
  color: var(--color-muted);
  margin: 0;
  flex: 1;
}
.bt-svc__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-line);
}
.bt-svc__price {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--color-ink);
  font-feature-settings: "tnum";
}
.bt-svc__price small { color: var(--color-muted); font-weight: 400; }
.bt-svc__cta {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}
.bt-svc__cta .arrow { transition: transform 0.3s var(--ease-spring); }

.bt-svc:hover { background: var(--color-ink); color: #fff; }
.bt-svc:hover .bt-svc__title,
.bt-svc:hover .bt-svc__num,
.bt-svc:hover .bt-svc__price,
.bt-svc:hover .bt-svc__cta   { color: #fff; }
.bt-svc:hover .bt-svc__desc,
.bt-svc:hover .bt-svc__top   { color: rgba(255,255,255,0.65); }
.bt-svc:hover .bt-svc__foot  { border-top-color: rgba(255,255,255,0.15); }
.bt-svc:hover .bt-svc__cta .arrow { transform: translateX(5px); }

/* hover orange wedge */
.bt-svc::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.4s var(--ease-out);
}
.bt-svc:hover::after { transform: scaleX(1); }

/* ============================================================
   5. BRAND MARQUEE
   ============================================================ */
.bt-marquee {
  position: relative;
  overflow: hidden;
  padding: var(--space-md) 0;
  mask-image: linear-gradient(90deg, transparent 0, #000 8%, #000 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 8%, #000 92%, transparent 100%);
}
.bt-marquee__track {
  display: flex;
  gap: clamp(2rem, 5vw, 4rem);
  width: max-content;
  animation: bt-marquee 36s linear infinite;
}
.bt-marquee:hover .bt-marquee__track { animation-play-state: paused; }
@keyframes bt-marquee {
  to { transform: translateX(-50%); }
}
.bt-marquee__item {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 500;
  font-variation-settings: "wdth" 90, "opsz" 96;
  letter-spacing: -0.03em;
  color: var(--color-ink);
  opacity: 0.32;
  white-space: nowrap;
  transition: opacity 0.25s, color 0.25s;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 0.7rem;
}
.bt-marquee__item:hover { opacity: 1; color: var(--color-primary); }
.bt-marquee__item .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: currentColor; opacity: 0.5;
}

/* ============================================================
   6. WHY US — feature band
   ============================================================ */
.bt-why {
  background: var(--color-bg-alt);
  position: relative;
  overflow: hidden;
}
.bt-why::before {
  content: "";
  position: absolute;
  top: -120px; right: -120px;
  width: 460px; height: 460px;
  background: radial-gradient(closest-side, rgba(11,83,148,0.10), transparent);
  pointer-events: none;
}
.bt-why__layout {
  display: grid;
  gap: var(--space-lg);
  align-items: stretch;
}
@media (min-width: 1024px) {
  .bt-why__layout { grid-template-columns: 1.1fr 1fr; gap: var(--space-xl); }
}

.bt-why__pitch {
  background: var(--color-ink);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 3rem);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  display: flex; flex-direction: column; justify-content: space-between;
  gap: var(--space-lg);
  min-height: 360px;
}
.bt-why__pitch::after {
  content: "";
  position: absolute; inset: -40% -10% auto auto;
  width: 480px; height: 480px;
  background: radial-gradient(closest-side, rgba(56,189,248,0.30), transparent);
  z-index: -1;
}
.bt-why__pitch h2 {
  font-size: clamp(1.875rem, 4vw, 3rem);
  margin: 0;
  color: #fff;
}
.bt-why__pitch h2 em {
  font-style: italic;
  font-weight: 400;
  color: var(--color-secondary);
}
.bt-why__pitch .stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: var(--space-md);
}
.bt-why__pitch .stats div { font-family: var(--font-mono); font-size: var(--fs-small); color: rgba(255,255,255,0.65); letter-spacing: 0.02em; }
.bt-why__pitch .stats b   { display: block; font-family: var(--font-display); font-size: 1.75rem; color: #fff; font-weight: 500; letter-spacing: -0.02em; }

.bt-why__list {
  display: grid;
  gap: var(--space-md);
  align-content: start;
}
.bt-why__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-line);
}
.bt-why__item:last-child { border-bottom: 1px solid var(--color-line); }
.bt-why__item .num {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--color-accent);
  letter-spacing: var(--tracking-eyebrow);
  font-weight: 600;
  padding-top: 0.4rem;
}
.bt-why__item h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0 0 0.25rem;
}
.bt-why__item p { color: var(--color-muted); margin: 0; }

/* ============================================================
   7. CTA BAND  — moved to components.css so it loads everywhere.
   ============================================================ */

/* ============================================================
   8. TESTIMONIAL
   ============================================================ */
.bt-quote {
  display: grid;
  gap: var(--space-lg);
  padding: clamp(2rem, 5vw, 4rem);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  position: relative;
}
.bt-quote::before {
  content: "“";
  position: absolute;
  top: -0.4em; left: 0.4em;
  font-family: var(--font-display);
  font-size: clamp(8rem, 20vw, 14rem);
  line-height: 1;
  color: var(--color-bg-tinted);
  font-weight: 500;
  pointer-events: none;
  z-index: 0;
}
.bt-quote__text {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 0;
  font-variation-settings: "wdth" 100, "opsz" 36;
}
.bt-quote__author {
  position: relative;
  z-index: 1;
  display: flex; align-items: center; gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--color-muted);
  letter-spacing: 0.02em;
}
.bt-quote__author b { color: var(--color-ink); font-family: var(--font-body); font-weight: 600; }