/* ============================================
   WET & WARM HEATING — STYLESHEET
   Palette: Navy #1A2744 | Red #C0392B | White | Grey #F5F6F8
   Font: Inter
   ============================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #1A2744;
  --navy-light: #243358;
  --red: #C0392B;
  --red-dark: #a93226;
  --white: #ffffff;
  --grey: #F5F6F8;
  --grey-mid: #e8eaed;
  --text: #1a1a2e;
  --text-muted: #5a6378;
  --radius: 10px;
  --shadow: 0 4px 20px rgba(26, 39, 68, 0.12);
  --shadow-lg: 0 12px 40px rgba(26, 39, 68, 0.18);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.18s ease;
  white-space: nowrap;
  line-height: 1;
}

.btn-primary {
  background: var(--red);
  color: var(--white);
  border-color: var(--red);
}
.btn-primary:hover { background: var(--red-dark); border-color: var(--red-dark); transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: var(--white); }

.btn-lg { padding: 18px 36px; font-size: 1.1rem; }
.btn-full { width: 100%; justify-content: center; }

/* ---- HEADER ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy);
  padding: 12px 0;
  box-shadow: 0 2px 16px rgba(0,0,0,0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-mark {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--white);
  background: var(--red);
  padding: 6px 10px;
  border-radius: 6px;
  line-height: 1;
  letter-spacing: -0.5px;
}

.logo-mark .amp { color: rgba(255,255,255,0.7); }

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-text strong {
  color: var(--white);
  font-size: 1rem;
  font-weight: 800;
}
.logo-text span {
  color: rgba(255,255,255,0.55);
  font-size: 0.72rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--red);
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  padding: 10px 20px;
  border-radius: 8px;
  transition: background 0.15s;
  white-space: nowrap;
}
.header-cta:hover { background: var(--red-dark); }

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: var(--navy);
  overflow: hidden;
}

/* Decorative copper pipe lines in background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, #b87333 1px, transparent 1px),
    linear-gradient(45deg, #b87333 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.04;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    rgba(26,39,68,0.97) 0%,
    rgba(26,39,68,0.88) 55%,
    rgba(26,39,68,0.5) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 20px;
  max-width: 680px;
}

.gas-safe-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  padding: 10px 18px;
  border-radius: 50px;
  color: rgba(255,255,255,0.85);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.gas-safe-badge svg { color: var(--red); flex-shrink: 0; }

.hero-eyebrow {
  color: var(--red);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hero-headline {
  font-size: clamp(2.6rem, 7vw, 4.2rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.08;
  margin-bottom: 22px;
  letter-spacing: -1px;
}
.hero-headline .accent { color: var(--red); }

.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.72);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.trust-row {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.12);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.7);
  font-size: 0.82rem;
  font-weight: 600;
}
.trust-item svg { color: var(--red); flex-shrink: 0; }

/* ---- OFFER BANNER ---- */
.offer-banner {
  background: var(--white);
  border-bottom: 3px solid var(--grey-mid);
  padding: 40px 0;
}

.offer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  align-items: center;
  gap: 32px;
  background: var(--navy);
  padding: 36px 40px;
  border-radius: 16px;
  position: relative;
  overflow: hidden;
}

.offer-inner::before {
  content: '';
  position: absolute;
  top: -30px; right: -30px;
  width: 200px; height: 200px;
  background: rgba(192, 57, 43, 0.1);
  border-radius: 50%;
}

.offer-label {
  color: var(--red);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.offer-heading {
  color: var(--white);
  font-size: 1.7rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.5px;
}

.offer-sub {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  margin-top: 4px;
}

.offer-price {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--red);
  padding: 20px 28px;
  border-radius: 12px;
  text-align: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}
.offer-price .from {
  color: rgba(255,255,255,0.8);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.offer-price .price {
  color: var(--white);
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -1px;
}

.offer-benefits {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  z-index: 1;
}
.offer-benefits li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 500;
}
.offer-benefits svg { color: #4ade80; flex-shrink: 0; }

.offer-btn { position: relative; z-index: 1; flex-shrink: 0; }

/* ---- SECTIONS ---- */
.section {
  padding: 80px 0;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 900;
  color: var(--navy);
  text-align: center;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
  line-height: 1.15;
}
.section-title.left { text-align: left; }

.section-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 580px;
  margin: 0 auto 52px;
  line-height: 1.65;
}

/* ---- SERVICES GRID ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--grey);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1.5px solid transparent;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--grey-mid);
}

.service-card.featured-card {
  background: var(--navy);
  border-color: var(--navy);
}
.service-card.featured-card h3,
.service-card.featured-card p { color: var(--white); }
.service-card.featured-card .service-icon { color: var(--red); }
.service-card.featured-card .service-icon svg { stroke: var(--red); }
.service-card.featured-card p { opacity: 0.75; }

.service-card--wide {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 28px;
  background: linear-gradient(135deg, var(--grey) 0%, var(--grey-mid) 100%);
}
.service-card--wide .service-icon { flex-shrink: 0; }

.service-icon {
  color: var(--navy);
  margin-bottom: 18px;
}
.service-card--wide .service-icon { margin-bottom: 0; }

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 8px;
}
.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.service-wide-text h3 { font-size: 1.2rem; }

.card-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--red);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ---- WHY US ---- */
.why-section { background: var(--grey); }

.why-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 60px;
  align-items: start;
}

.why-content p {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 1.05rem;
  line-height: 1.7;
}

.why-points {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.why-point {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.why-icon {
  width: 46px;
  height: 46px;
  background: var(--navy);
  color: var(--white);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.why-point strong {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 4px;
}
.why-point p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.55;
}

.cta-card {
  background: var(--navy);
  border-radius: 16px;
  padding: 40px 32px;
  text-align: center;
  position: sticky;
  top: 90px;
}

.cta-card-label {
  color: var(--red);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.cta-card h3 {
  color: var(--white);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.3;
}

.cta-card-or {
  color: rgba(255,255,255,0.4);
  font-size: 0.82rem;
  margin: 18px 0 8px;
}

.cta-email {
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  word-break: break-all;
  transition: color 0.15s;
}
.cta-email:hover { color: var(--white); }

/* ---- AREAS ---- */
.areas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  max-width: 700px;
  margin: 0 auto;
}

.area-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--grey);
  border: 1.5px solid var(--grey-mid);
  border-radius: 8px;
  padding: 14px 18px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--navy);
}
.area-item svg { color: var(--red); flex-shrink: 0; }

.area-item--more {
  justify-content: center;
  background: transparent;
  border-style: dashed;
  color: var(--text-muted);
  font-style: italic;
  font-weight: 400;
}

/* ---- CONTACT ---- */
.contact-section { background: var(--grey); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}

.contact-info > p {
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.7;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--navy);
  padding: 14px 18px;
  background: var(--white);
  border-radius: 8px;
  border: 1.5px solid var(--grey-mid);
  transition: border-color 0.15s, box-shadow 0.15s;
  word-break: break-all;
}
.contact-link svg { color: var(--red); flex-shrink: 0; }
.contact-link:hover { border-color: var(--navy); box-shadow: 0 2px 10px rgba(26,39,68,0.1); }

/* ---- FORM ---- */
.contact-form {
  background: var(--white);
  padding: 40px 36px;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--navy);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--grey-mid);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--white);
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(26,39,68,0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: #aab0bf; }
.form-group textarea { resize: vertical; min-height: 110px; }

.form-note {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 12px;
}
.form-note a { color: var(--red); font-weight: 600; }

/* ---- FOOTER ---- */
.site-footer {
  background: var(--navy);
  padding: 48px 0 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo { display: flex; align-items: center; gap: 12px; }
.footer-logo .logo-text strong { font-size: 0.95rem; }

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s;
}
.footer-links a:hover { color: var(--white); }

.footer-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge-pill {
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.65);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 50px;
  border: 1px solid rgba(255,255,255,0.12);
}

.footer-bottom {
  padding: 20px 0;
  background: rgba(0,0,0,0.15);
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
}
.footer-bottom p {
  color: rgba(255,255,255,0.4);
  font-size: 0.82rem;
}
.footer-bottom a { color: rgba(255,255,255,0.6); }

/* ---- FLOATING CALL BUTTON ---- */
.float-call {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 200;
  background: var(--red);
  color: var(--white);
  padding: 14px 22px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  gap: 10px;
  align-items: center;
  box-shadow: 0 6px 24px rgba(192,57,43,0.5);
  transition: background 0.15s, transform 0.15s;
}
.float-call:hover { background: var(--red-dark); transform: scale(1.04); }

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 900px) {
  .offer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .offer-btn { grid-column: 1 / -1; }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-card--wide {
    grid-column: 1 / -1;
  }

  .why-grid { grid-template-columns: 1fr; }
  .why-cta-block { display: none; }

  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .section { padding: 56px 0; }

  .logo-text { display: none; }
  .header-cta span { display: none; }
  .header-cta { padding: 10px 14px; }

  .hero { min-height: auto; }
  .hero-content { padding: 60px 20px 56px; }

  .hero-actions { flex-direction: column; }
  .hero-actions .btn { text-align: center; justify-content: center; }

  .trust-row { gap: 16px; }
  .trust-item span { font-size: 0.75rem; }

  .offer-banner { padding: 24px 0; }
  .offer-inner {
    grid-template-columns: 1fr;
    padding: 28px 24px;
    text-align: center;
  }
  .offer-price { align-self: center; }
  .offer-benefits { align-items: center; }

  .services-grid { grid-template-columns: 1fr; }
  .service-card--wide { flex-direction: column; gap: 16px; }

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 28px 22px; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 20px; }
  .footer-links { flex-direction: column; gap: 12px; }

  .float-call { display: flex; }

  body { padding-bottom: 80px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}