:root {
  --color-primary: #1657c7;
  --color-primary-dark: #123f8c;
  --color-secondary: #0b1f3f;
  --color-accent: #e11d2e;
  --color-accent-dark: #b8121f;
  --color-bg: #f5f8fc;
  --color-surface: #ffffff;
  --color-text: #101826;
  --color-text-soft: #54606f;
  --color-border: #e2e8f1;
  --font-heading: 'Barlow Semi Condensed', sans-serif;
  --font-body: 'Inter', sans-serif;
  --container: 1200px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 11px;
  --shadow-card:
    0 1px 2px rgba(11, 31, 63, 0.06), 0 10px 26px rgba(11, 31, 63, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img,
svg {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
}
#top,
#services,
#gallery,
#why,
#how-it-works,
#areas,
#faq,
#quote {
  scroll-margin-top: 84px;
}
h1,
h2,
h3 {
  font-family: var(--font-heading);
  line-height: 1.1;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
  color: var(--color-secondary);
  font-weight: 800;
}
p {
  margin: 0 0 1em;
  color: var(--color-text-soft);
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
button {
  font-family: inherit;
}
label {
  font-weight: 600;
  font-size: 13.5px;
  color: var(--color-text);
  display: block;
  margin-bottom: 6px;
}
input,
select,
textarea {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  padding: 11px 13px;
}
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}
@media (min-width: 640px) {
  .container {
    padding-inline: 32px;
  }
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 18px;
  border-radius: 0 0 10px 0;
  z-index: 200;
}
.skip-link:focus {
  left: 0;
}

.demo-notice {
  background: #262626;
  color: #f2f2f2;
  text-align: center;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 9px 20px;
}
@media (min-width: 640px) {
  .demo-notice {
    padding-inline: 32px;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 16px;
  padding: 14px 26px;
  border-radius: 12px;
  text-decoration: none;
  border: 1.5px solid transparent;
  min-height: 50px;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 10px 24px rgba(225, 29, 46, 0.32);
}
.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}
.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--color-secondary);
  border-color: var(--color-border);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-block {
  width: 100%;
}
.btn-sm {
  padding: 9px 14px;
  min-height: 38px;
  font-size: 14px;
  border-radius: 9px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.eyebrow-on-dark {
  color: #ff8a93;
}

/* Header */
.mk-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: 12px 16px;
  padding-block: 10px;
}
.brand {
  display: flex;
  align-items: center;
  min-width: 0;
  text-decoration: none;
  flex-shrink: 1;
}
.brand img {
  height: 42px;
  width: auto;
  flex-shrink: 0;
}
@media (min-width: 480px) {
  .brand img {
    height: 50px;
  }
}
.nav-links {
  display: none;
  align-items: center;
  gap: 22px;
  font-weight: 600;
  font-size: 14.5px;
}
.nav-links a {
  text-decoration: none;
  color: var(--color-text);
  white-space: nowrap;
}
.nav-links a:hover {
  color: var(--color-primary);
}
@media (min-width: 1180px) {
  .nav-links {
    display: flex;
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.header-phone {
  display: none;
  text-decoration: none;
  font-weight: 700;
  color: var(--color-secondary);
  font-size: 14.5px;
}
@media (min-width: 1180px) {
  .header-phone {
    display: inline-flex;
    align-items: center;
    gap: 7px;
  }
}
.header-actions > a.btn {
  display: none;
}
@media (min-width: 1180px) {
  .header-actions > a.btn {
    display: inline-flex;
  }
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 38px;
  padding: 0 12px;
  border: 1.5px solid var(--color-border);
  border-radius: 9px;
  background: var(--color-surface);
  color: var(--color-secondary);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.03em;
  cursor: pointer;
  text-decoration: none;
}
.lang-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.lang-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Mobile nav (hamburger disclosure) */
.mobile-nav {
  position: static;
}
@media (min-width: 1180px) {
  .mobile-nav {
    display: none;
  }
}
.nav-toggle {
  list-style: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  color: var(--color-secondary);
}
.nav-toggle::-webkit-details-marker {
  display: none;
}
.nav-toggle::marker {
  content: '';
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.nav-toggle svg {
  width: 22px;
  height: 22px;
}
.nav-toggle .icon-close {
  display: none;
}
.mobile-nav[open] .nav-toggle .icon-open {
  display: none;
}
.mobile-nav[open] .nav-toggle .icon-close {
  display: block;
}

.mobile-nav-panel {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 10;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 20px 44px rgba(11, 31, 63, 0.18);
  padding: 8px 20px 24px;
  max-height: calc(100vh - 72px);
  overflow-y: auto;
}
@media (min-width: 640px) {
  .mobile-nav-panel {
    padding-inline: 32px;
  }
}
.mobile-nav-links {
  display: flex;
  flex-direction: column;
  padding-block: 8px;
}
.mobile-nav-links a {
  display: block;
  padding: 13px 4px;
  font-weight: 600;
  font-size: 16.5px;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  min-height: 44px;
}
.mobile-nav-links a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}
.mobile-nav-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}
.mobile-lang-row {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}
.mobile-lang-row .lang-toggle {
  flex: 1;
  height: 44px;
}
body.nav-scroll-lock {
  overflow: hidden;
}

/* Hero */
.hero {
  position: relative;
  color: #fff;
  padding-block: 60px 52px;
  background:
    linear-gradient(
      115deg,
      rgba(11, 31, 63, 0.94) 0%,
      rgba(11, 31, 63, 0.82) 45%,
      rgba(11, 31, 63, 0.38) 100%
    ),
    url('assets/commercial-rooftop-carrier-condensers.jpg') center/cover
      no-repeat;
}
.hero-inner {
  max-width: 660px;
}
@media (min-width: 1024px) {
  .hero-inner {
    max-width: 920px;
  }
}
.hero .eyebrow {
  color: #ff8a93;
}
.hero h1 {
  font-size: clamp(2.15rem, 5vw, 3.4rem);
  color: #fff;
}
.hero-lede {
  color: rgba(255, 255, 255, 0.87);
  font-size: 18px;
  max-width: 54ch;
}
@media (min-width: 1024px) {
  .hero-lede {
    max-width: 66ch;
  }
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 26px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
  padding: 9px 14px;
  border-radius: 999px;
}
.badge svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Quick facts bar */
.facts-bar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.facts-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
  padding-block: 26px;
}
@media (min-width: 720px) {
  .facts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1020px) {
  .facts-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.fact-item {
  display: flex;
  gap: 13px;
  align-items: flex-start;
}
.fact-icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  flex-shrink: 0;
  background: rgba(22, 87, 199, 0.09);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.fact-icon svg {
  width: 22px;
  height: 22px;
}
.fact-item h3 {
  font-size: 15.5px;
  margin-bottom: 2px;
  font-weight: 700;
}
.fact-item p {
  margin: 0;
  font-size: 14px;
}

section {
  padding-block: 60px;
}
@media (min-width: 900px) {
  section {
    padding-block: 92px;
  }
}
.section-head {
  max-width: 640px;
  margin-bottom: 38px;
}
.section-head h2 {
  font-size: clamp(1.85rem, 3.3vw, 2.55rem);
}

/* Services */
.services-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1000px) {
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  box-shadow: var(--shadow-card);
}
.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 13px;
  background: linear-gradient(
    150deg,
    var(--color-primary),
    var(--color-secondary)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.service-icon.is-emergency {
  background: linear-gradient(
    150deg,
    var(--color-accent),
    var(--color-accent-dark)
  );
}
.service-icon svg {
  width: 24px;
  height: 24px;
  color: #fff;
}
.service-card h3 {
  font-size: 17px;
  margin-bottom: 7px;
}
.service-card p {
  font-size: 14px;
  margin: 0;
}

/* Gallery */
.gallery {
  background: var(--color-surface);
}
.gallery-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}
@media (min-width: 560px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 900px) {
  .gallery-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-bg);
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  font: inherit;
  text-align: left;
  cursor: zoom-in;
  -webkit-tap-highlight-color: transparent;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 260ms ease;
}
.gallery-item:hover img {
  transform: scale(1.045);
}
.gallery-item:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}
.gallery-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    0deg,
    rgba(11, 31, 63, 0.82),
    rgba(11, 31, 63, 0)
  );
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 22px 12px 10px;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 20px;
}
.lightbox[hidden] {
  display: none;
}
.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(11, 31, 63, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 200ms ease;
}
.lightbox.is-visible .lightbox-backdrop {
  opacity: 1;
}
.lightbox-content {
  position: relative;
  z-index: 1;
  max-width: min(94vw, 1200px);
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  opacity: 0;
  transform: scale(0.96);
  transition:
    opacity 200ms ease,
    transform 200ms ease;
}
.lightbox.is-visible .lightbox-content {
  opacity: 1;
  transform: scale(1);
}
.lightbox-image {
  display: block;
  max-width: 100%;
  max-height: 76vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  background: var(--color-secondary);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);
}
.lightbox-caption {
  color: #fff;
  font-size: 14.5px;
  font-weight: 600;
  text-align: center;
  margin: 0;
  max-width: 70ch;
}
.lightbox-close {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  background: rgba(11, 31, 63, 0.72);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    background-color 160ms ease,
    transform 160ms ease;
}
.lightbox-close:hover {
  background: rgba(11, 31, 63, 0.92);
  transform: scale(1.06);
}
.lightbox-close:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 2px;
}
.lightbox-close svg {
  width: 20px;
  height: 20px;
}
body.lightbox-open {
  overflow: hidden;
}

/* Why choose us */
.why-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1080px) {
  .why-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.why-card {
  padding: 26px 22px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  height: 100%;
}
.why-card .num {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 14px;
  color: var(--color-primary);
  letter-spacing: 0.06em;
}
.why-card h3 {
  font-size: 18px;
  margin: 10px 0 8px;
}
.why-card p {
  font-size: 14px;
  margin: 0;
}

/* Process */
.process {
  background: var(--color-surface);
}
.process-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}
@media (min-width: 820px) {
  .process-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.process-step {
  position: relative;
  padding-left: 56px;
}
.process-step .step-num {
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.process-step h3 {
  font-size: 18px;
  margin-bottom: 6px;
}
.process-step p {
  font-size: 14.5px;
  margin: 0;
}

/* Service areas */
.areas {
  background: linear-gradient(
    150deg,
    var(--color-secondary),
    var(--color-primary-dark)
  );
  color: #fff;
}
.areas h2 {
  color: #fff;
}
.areas .section-head p {
  color: rgba(255, 255, 255, 0.78);
}
.areas-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.area-chip {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: #fff;
  font-weight: 600;
  font-size: 14.5px;
  padding: 11px 18px;
  border-radius: 999px;
}

/* FAQ */
.faq-list {
  max-width: 780px;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding-block: 6px;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 4px;
  font-weight: 600;
  font-size: 16px;
  color: var(--color-text);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary .icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--color-primary);
  transition: transform 200ms ease;
}
.faq-item[open] summary .icon {
  transform: rotate(45deg);
}
.faq-item p {
  padding: 0 4px 18px;
  font-size: 15px;
  margin: 0;
}

/* Closing / quote */
.closing {
  background: linear-gradient(
    150deg,
    var(--color-secondary),
    var(--color-primary-dark)
  );
  color: #fff;
}
.closing-grid {
  display: grid;
  gap: 36px;
  grid-template-columns: 1fr;
}
@media (min-width: 960px) {
  .closing-grid {
    grid-template-columns: 1fr 1.05fr;
    align-items: start;
  }
}
.closing h2 {
  color: #fff;
  font-size: clamp(1.85rem, 3.6vw, 2.6rem);
}
.closing-copy {
  min-width: 0;
}
.closing-copy p {
  color: rgba(255, 255, 255, 0.82);
  max-width: 46ch;
}
.closing-contact {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}
.closing-contact a,
.closing-contact span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 17px;
  min-width: 0;
  overflow-wrap: anywhere;
}
.closing-contact svg {
  width: 20px;
  height: 20px;
  color: #ff8a93;
  flex-shrink: 0;
}

.quote-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  color: var(--color-text);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
  min-width: 0;
}
.quote-card h3 {
  font-size: 19px;
  margin-bottom: 4px;
}
.quote-card > p {
  font-size: 14.5px;
  margin-bottom: 20px;
}
.form-row {
  margin-bottom: 16px;
}
.form-grid-2 {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  margin-bottom: 0;
}
@media (min-width: 560px) {
  .form-grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

/* Footer */
footer {
  background: var(--color-secondary);
  color: rgba(255, 255, 255, 0.75);
  padding-block: 44px 100px;
  font-size: 14.5px;
}
@media (min-width: 760px) {
  footer {
    padding-bottom: 44px;
  }
}
.footer-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}
@media (min-width: 760px) {
  .footer-grid {
    grid-template-columns: 1.3fr 1fr 1fr 1fr;
  }
}
.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  background: transparent;
  padding: 0;
  border-radius: 0;
  width: fit-content;
}
.footer-brand img {
  height: 52px;
  width: auto;
}
.footer-col h4 {
  color: #fff;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
  font-weight: 700;
}
.footer-col p,
.footer-col a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
}
.footer-col a:hover {
  color: #fff;
}
.footer-col li {
  margin-bottom: 8px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  margin-top: 32px;
  padding-top: 20px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* Mobile sticky CTA */
.mobile-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 150;
  display: flex;
  gap: 10px;
  padding: 10px 14px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -8px 24px rgba(11, 31, 63, 0.16);
}
.mobile-cta .btn {
  flex: 1;
}
@media (min-width: 760px) {
  .mobile-cta {
    display: none;
  }
}
body {
  padding-bottom: 78px;
}
@media (min-width: 760px) {
  body {
    padding-bottom: 0;
  }
}

/* Footer copyright and website credit */
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.site-credit a {
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-credit a:hover {
  color: #ff8a93;
  text-decoration: underline;
}

/* Center footer credits on mobile */
@media (max-width: 640px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }
}