/* ============================================================
   ProActive HVAC — Theme CSS
   Palette: Blue #1572A1, Orange #E8380D, White, Dark Red #911214
   Typography: Inter (display) + DM Sans (body)
   Colors sourced from company logo
   ============================================================ */

:root {
  --blue:       #1572A1;
  --blue-mid:   #1a87b8;
  --blue-lt:    #2a9bc8;
  --blue-dark:  #0f5a7e;
  --orange:     #E8380D;
  --orange-lt:  #f05a30;
  --red-dark:   #911214;
  --white:      #ffffff;
  --off-white:  #f7f9fb;
  --gray-50:    #f4f6f8;
  --gray-100:   #eef1f4;
  --gray-200:   #dce3ea;
  --gray-300:   #b8c5d0;
  --gray-500:   #7a8894;
  --gray-700:   #3d4a56;
  --text-dark:  #1a2a36;
  --text-mid:   #5a6a76;
  --text-lt:    #96a8b4;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-sm: 0 1px 4px rgba(21,114,161,0.08);
  --shadow-md: 0 4px 16px rgba(21,114,161,0.12);
  --shadow-lg: 0 8px 32px rgba(21,114,161,0.16);

  --font-display: 'Inter', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --max-w: 1200px;
  --section-py: 56px;
}

/* ── Reset & Base ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background: var(--off-white);
  line-height: 1.6;
}

img, svg { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── Buttons ───────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--orange);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: 2px solid var(--orange);
  cursor: pointer;
  transition: background 0.18s, transform 0.15s, box-shadow 0.18s;
}
.btn-primary:hover {
  background: var(--orange-lt);
  border-color: var(--orange-lt);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(232,90,27,0.3);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  border: 2px solid rgba(255,255,255,0.45);
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s;
}
.btn-secondary:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
}

.btn-outline {
  border-color: var(--blue) !important;
  color: var(--blue) !important;
  background: transparent !important;
}
.btn-outline:hover {
  background: var(--blue) !important;
  color: #fff !important;
}

.btn-large { font-size: 1.05rem; padding: 16px 36px; }

.btn-cta-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  padding: 15px 30px;
  border-radius: var(--radius-md);
  border: 2px solid rgba(255,255,255,0.4);
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s;
}
.btn-cta-outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
}

/* ── Header ────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  box-shadow: 0 1px 0 var(--gray-200);
  transition: box-shadow 0.2s;
}
.site-header.scrolled { box-shadow: 0 2px 12px rgba(21,114,161,0.1), 0 1px 0 var(--gray-200); }

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; }
.logo-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--blue);
  line-height: 1.1;
}
.logo-sub {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.2;
  letter-spacing: 0.03em;
  font-family: var(--font-body);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.main-nav a {
  color: var(--text-dark);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}
.main-nav a:hover { color: var(--blue); background: var(--gray-50); }

.header-cta { flex-shrink: 0; }
.btn-call {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--orange);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.88rem;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  transition: background 0.15s, transform 0.15s;
}
.btn-call:hover { background: var(--orange-lt); transform: translateY(-1px); }

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: transform 0.2s;
}
.mobile-menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ───────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--blue) 0%, #1260a0 60%, #1a7ab5 100%);
  padding: 0;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--off-white);
  clip-path: ellipse(55% 100% at 50% 100%);
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 52px 24px 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-badge {
  display: inline-block;
  background: rgba(232,90,27,0.2);
  color: var(--orange-lt);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 99px;
  margin-bottom: 14px;
  border: 1px solid rgba(232,90,27,0.3);
}
.hero-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  color: #fff;
  line-height: 1.08;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.72);
  line-height: 1.65;
  margin-bottom: 36px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.hero-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.hero-meta span {
  display: flex;
  align-items: center;
  gap: 7px;
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
}
.hero-meta svg { color: var(--orange); flex-shrink: 0; }

.hero-visual { position: relative; }
.hero-image-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.hero-svg { width: 100%; height: auto; display: block; }
.hero-photo { width: 100%; height: auto; display: block; }
.section-photo { width: 100%; height: auto; display: block; }
.hero-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,45,84,0.2) 0%, transparent 60%);
}

/* ── Trust Strip ─────────────────────────────────────────── */
.trust-strip {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
}
.trust-strip-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-dark);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 20px;
}
.trust-item svg { color: var(--orange); flex-shrink: 0; }
.trust-divider {
  width: 1px;
  height: 24px;
  background: var(--gray-200);
  flex-shrink: 0;
}

/* ── Stats ──────────────────────────────────────────────── */
.stats-section {
  background: var(--blue);
  padding: 40px 0;
}
.stats-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
}
.stat-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 28px 24px;
  text-align: center;
  border-radius: var(--radius-md);
  margin: 0 8px;
}
.stat-card:first-child { margin-left: 0; }
.stat-card:last-child { margin-right: 0; }
.stat-number {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 3vw, 2.8rem);
  color: #fff;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-plus { color: var(--orange); }
.stat-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ── Section Commons ─────────────────────────────────────── */
.section-inner, .why-us-inner, .reviews-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--section-py) 24px;
}
.section-header { margin-bottom: 36px; }
.section-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  color: var(--blue);
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.section-sub {
  font-size: 1.05rem;
  color: var(--text-mid);
  line-height: 1.65;
  max-width: 560px;
}

/* ── Services ───────────────────────────────────────────── */
.services-section { background: var(--off-white); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px 18px;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--orange);
}
.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.service-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--blue);
  margin-bottom: 10px;
  line-height: 1.3;
}
.service-desc {
  font-size: 0.88rem;
  color: var(--text-mid);
  line-height: 1.55;
  margin-bottom: 18px;
}
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--orange);
  transition: gap 0.15s;
}
.service-link:hover { gap: 8px; }

/* ── Residential ─────────────────────────────────────────── */
.residential-section { background: var(--white); }
.residential-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--section-py) 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.residential-content .section-title { margin-bottom: 12px; }
.residential-content .section-sub { margin-bottom: 32px; }
.residential-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 24px;
  margin-bottom: 36px;
}
.res-item, .com-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-dark);
}
.res-item svg, .com-item svg { color: var(--orange); flex-shrink: 0; }
.residential-visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

/* ── Commercial ──────────────────────────────────────────── */
.commercial-section { background: var(--gray-50); }
.commercial-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--section-py) 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.commercial-visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.commercial-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 24px;
  margin-bottom: 36px;
}

/* ── Indoor Air ─────────────────────────────────────────── */
.indoor-section {
  background: linear-gradient(135deg, var(--blue) 0%, #1260a0 100%);
  padding: 0;
}
.indoor-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--section-py) 24px;
}
.indoor-content .section-tag { color: var(--orange-lt); }
.indoor-content .section-title { color: #fff; margin-bottom: 12px; }
.indoor-content .section-sub { color: rgba(255,255,255,0.65); margin-bottom: 40px; }
.iaq-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}
.iaq-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  transition: background 0.2s;
}
.iaq-card:hover { background: rgba(255,255,255,0.1); }
.iaq-card h4 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: #fff;
  margin: 14px 0 8px;
}
.iaq-card p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.55;
}

/* ── Maintenance ────────────────────────────────────────── */
.maint-section {
  background: var(--orange);
  padding: 0;
}
.maint-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--section-py) 24px;
  text-align: center;
}
.maint-badge {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 99px;
  margin-bottom: 20px;
}
.maint-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  color: #fff;
  line-height: 1.1;
  margin-bottom: 16px;
}
.maint-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.8);
  max-width: 580px;
  margin: 0 auto 48px;
  line-height: 1.65;
}
.maint-benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.maint-benefit {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: left;
}
.benefit-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
}
.maint-benefit h4 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: #fff;
  margin-bottom: 8px;
}
.maint-benefit p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.55;
}
.maint-inner .btn-primary {
  background: #fff;
  color: var(--orange);
  border-color: #fff;
}
.maint-inner .btn-primary:hover {
  background: var(--off-white);
  border-color: var(--off-white);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* ── Why Us ──────────────────────────────────────────────── */
.why-us-section { background: var(--off-white); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  position: relative;
  transition: box-shadow 0.2s, transform 0.2s;
}
.why-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.why-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.8rem;
  color: var(--gray-200);
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: -0.04em;
}
.why-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--blue);
  margin-bottom: 12px;
}
.why-card p {
  font-size: 0.88rem;
  color: var(--text-mid);
  line-height: 1.6;
}
.licenses-strip {
  margin-top: 48px;
  padding: 20px 28px;
  background: var(--blue);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}
.lic-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  margin-right: 16px;
}
.lic-item {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
}
.lic-dot {
  color: rgba(255,255,255,0.3);
  margin: 0 12px;
}

/* ── Reviews ────────────────────────────────────────────── */
.reviews-section { background: var(--white); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  transition: box-shadow 0.2s;
}
.review-card:hover { box-shadow: var(--shadow-md); }
.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}
.review-text {
  font-size: 0.95rem;
  color: var(--text-mid);
  line-height: 1.65;
  margin-bottom: 20px;
  font-style: italic;
}
.review-author {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--blue);
}

/* ── CTA Band ───────────────────────────────────────────── */
.cta-band {
  background: linear-gradient(135deg, var(--blue) 0%, #1260a0 100%);
  padding: 0;
}
.cta-band-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px 24px;
  text-align: center;
}
.cta-band-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 3.5vw, 3rem);
  color: #fff;
  margin-bottom: 16px;
}
.cta-band-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.65;
}
.cta-band-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.cta-contact-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-contact-info span {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.6);
  font-size: 0.88rem;
}
.cta-contact-info svg { color: var(--orange); flex-shrink: 0; }

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
  background: #0c5278;
  padding: 64px 0 0;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-brand { }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-logo-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  color: #fff;
}
.footer-logo-sub {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.4);
  font-family: var(--font-body);
}
.footer-tagline {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.65;
  max-width: 280px;
}
.footer-heading {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.footer-links li {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
  line-height: 1.4;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 24px;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.3);
}

/* ── Contact Form ───────────────────────────────────────── */
.contact-section { background: var(--white); }
.contact-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--section-py) 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.contact-content .section-title { margin-bottom: 12px; }
.contact-content .section-sub { margin-bottom: 32px; }
.contact-phone-block { display: flex; flex-direction: column; gap: 12px; }
.contact-phone-note { font-size: 0.85rem; color: var(--text-mid); }

.contact-form-wrap {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.02em;
}
.required { color: var(--orange); }
.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-dark);
  background: var(--white);
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(232,90,27,0.12);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select { appearance: none; cursor: pointer; }
.btn-submit { width: 100%; justify-content: center; }
.btn-submit:disabled { opacity: 0.7; cursor: not-allowed; }
.btn-loading svg { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.form-success {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
  border-radius: var(--radius-md);
  padding: 16px;
  color: #065f46;
  font-size: 0.9rem;
}
.form-success svg { color: #059669; flex-shrink: 0; }

.form-error {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: #991b1b;
  font-size: 0.88rem;
}

/* ── Newsletter Popup ───────────────────────────────────── */
.nl-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10,30,50,0.55);
  z-index: 900;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(3px);
}
.nl-overlay.show { display: flex; }

.nl-modal {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 64px rgba(15,45,84,0.22);
  max-width: 440px;
  width: 100%;
  max-height: 90vh;
  padding: 32px;
  position: relative;
  text-align: center;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.nl-close {
  position: sticky;
  top: -4px;
  align-self: flex-end;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gray-500);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: color 0.15s;
  line-height: 1;
  z-index: 10;
  flex-shrink: 0;
}
.nl-close:hover { color: var(--text-dark); }

.nl-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--blue) 0%, #1a87b8 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 8px auto 14px;
}
.nl-icon svg { color: #fff; }

.nl-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 10px;
}
.nl-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--blue);
  line-height: 1.15;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.nl-sub {
  font-size: 0.88rem;
  color: var(--text-mid);
  line-height: 1.55;
  margin-bottom: 20px;
}

.nl-form { display: flex; flex-direction: column; gap: 14px; }
.nl-form .form-group { text-align: left; }
.nl-form label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.02em;
  margin-bottom: 6px;
  display: block;
}
.nl-form input {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-dark);
  background: var(--gray-50);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  width: 100%;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}
.nl-form input:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(232,90,27,0.12);
}

.nl-submit {
  width: 100%;
  justify-content: center;
  margin-top: 4px;
  font-size: 1rem;
}

.nl-dismiss {
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--text-lt);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 8px;
  transition: color 0.15s;
}
.nl-dismiss:hover { color: var(--text-mid); text-decoration: underline; }

.nl-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
}
.nl-success svg { color: var(--orange); }
.nl-success p { font-family: var(--font-display); font-weight: 700; color: var(--blue); font-size: 1.1rem; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .iaq-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .maint-benefits { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 768px) {
  .main-nav { display: none; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: var(--white); padding: 16px; gap: 4px; box-shadow: 0 8px 24px rgba(21,114,161,0.12); }
  .main-nav a { padding: 12px 16px; color: var(--text-dark); }
  .main-nav a:hover { color: var(--blue); }
  .mobile-menu-toggle { display: flex; }
  .header-cta { display: none; }

  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding: 60px 24px 80px; }
  .hero-visual { order: -1; }
  .hero-headline { font-size: 2.2rem; }
  .hero-sub { font-size: 0.95rem; }

  .trust-strip-inner { gap: 8px; }
  .trust-divider { display: none; }
  .trust-item { font-size: 0.78rem; padding: 8px 12px; }

  .stats-inner { grid-template-columns: repeat(2, 1fr); }

  .residential-inner, .commercial-inner { grid-template-columns: 1fr; gap: 40px; }
  .residential-visual, .commercial-visual { order: -1; }

  .services-grid { grid-template-columns: 1fr; }
  .iaq-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .maint-benefits { grid-template-columns: 1fr; }

  .licenses-strip { flex-direction: column; align-items: flex-start; gap: 8px; }
  .lic-dot { display: none; }

  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  :root { --section-py: 60px; }
  .section-inner, .why-us-inner, .reviews-inner { padding: var(--section-py) 16px; }
  .hero-actions { flex-direction: column; }
  .residential-list, .commercial-list { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
}