/* =========================================================
   KOZ PLUMBING & HEATING
   Main stylesheet — shared by every page.
   ========================================================= */

:root {
  --navy: #071a31;
  --navy-dark: #04111f;
  --navy-soft: #0b2747;
  --blue: #087de1;
  --blue-bright: #20a9ef;
  --red: #ed2638;
  --red-dark: #c91b2c;
  --ink: #102238;
  --muted: #637185;
  --line: #dce4ec;
  --surface: #f4f7fa;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(7, 26, 49, 0.12);
  --radius: 14px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }

/* ---------- Typography ---------- */
.eyebrow,
.kicker,
.crumb {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow::before,
.kicker::before {
  content: "";
  width: 28px;
  height: 3px;
  background: currentColor;
  border-radius: 99px;
}

h1,
h2,
h3 { margin: 0; line-height: 1.08; letter-spacing: -0.035em; }
h1 { font-size: clamp(3rem, 6vw, 5.6rem); }
h2 { font-size: clamp(2.2rem, 4vw, 4rem); }
h3 { font-size: 1.35rem; }
p { margin: 0; color: var(--muted); }
em { color: var(--blue); font-style: normal; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid rgba(7, 26, 49, 0.08);
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: 86px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand { flex: 0 0 auto; }
.brand img { width: 190px; height: auto; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.main-nav > a,
.nav-dropdown > summary {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 13px;
  color: #324257;
  font-size: 0.94rem;
  font-weight: 700;
  list-style: none;
  cursor: pointer;
}

.main-nav > a:hover,
.main-nav > a.active,
.nav-dropdown[open] > summary,
.nav-dropdown.active > summary { color: var(--blue); }

.nav-dropdown { position: relative; }
.nav-dropdown > summary::-webkit-details-marker { display: none; }

.chevron {
  width: 7px;
  height: 7px;
  margin-top: -4px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.nav-dropdown[open] .chevron { transform: rotate(225deg); margin-top: 4px; }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  width: 250px;
  padding: 9px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 12px;
}

.dropdown-menu a {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--ink);
  font-weight: 700;
}

.dropdown-menu a:hover { background: var(--surface); color: var(--blue); }

.header-call {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.header-call-label {
  color: var(--red);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.header-call strong { color: var(--navy); font-size: 1rem; }

/* ---------- Mobile navigation ---------- */
.nav-toggle { position: absolute; opacity: 0; pointer-events: none; }
.menu-toggle {
  display: none;
  margin-left: auto;
  padding: 8px;
  color: var(--navy);
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  margin: 5px 0;
  background: currentColor;
  transition: transform 0.2s ease;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 52px;
  padding: 0 22px;
  border: 2px solid transparent;
  border-radius: 7px;
  font-weight: 850;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn.primary { color: var(--white); background: var(--red); }
.btn.primary:hover { background: var(--red-dark); }
.btn.outline { color: var(--navy); background: transparent; border-color: #9eabb9; }
.btn.outline:hover { border-color: var(--navy); }
.hero .btn.outline { color: var(--white); border-color: rgba(255,255,255,0.55); }
.hero .btn.outline:hover { border-color: var(--white); }
.btn.secondary { color: var(--white); background: var(--navy); }
.btn.white-btn { color: var(--navy); background: var(--white); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Home hero ---------- */
.hero { overflow: hidden; background: var(--navy); color: var(--white); }
.hero-in {
  min-height: 680px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 70px;
  padding-block: 70px;
}
.hero h1 { max-width: 760px; }
.hero h1 strong { color: var(--blue-bright); font-weight: inherit; }
.hero p { max-width: 650px; margin: 25px 0 30px; color: #c8d5e4; font-size: 1.1rem; }
.hero .kicker { color: #7ecbff; }
.hero-meta {
  display: flex;
  gap: 34px;
  margin-top: 38px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.16);
}
.hero-meta div { display: grid; gap: 1px; }
.hero-meta strong { font-size: 1.2rem; }
.hero-meta span { color: #9eb0c4; font-size: 0.8rem; }

.hero-photo {
  min-height: 510px;
  position: relative;
  background:
    linear-gradient(180deg, rgba(4,19,36,0.02), rgba(4,19,36,0.55)),
    url('assets/images/plumber-working.webp') center/cover;
  border-radius: 18px;
  box-shadow: 25px 25px 0 rgba(8,125,225,0.18);
}

.hero-card {
  position: absolute;
  left: 25px;
  right: 25px;
  bottom: 25px;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 16px;
  background: rgba(7,26,49,0.95);
  border: 1px solid rgba(255,255,255,0.13);
  border-radius: 10px;
}
.hero-card .icon {
  width: 45px;
  height: 45px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  background: var(--red);
  border-radius: 8px;
  font-weight: 900;
}
.hero-card div:nth-child(2) { display: grid; }
.hero-card span { color: #aebdcd; font-size: 0.82rem; }

/* ---------- Trust bar ---------- */
.trust { background: var(--white); border-bottom: 1px solid var(--line); }
.trust-in { display: grid; grid-template-columns: repeat(3, 1fr); }
.trust-item {
  display: flex;
  align-items: center;
  gap: 13px;
  min-height: 92px;
  padding: 18px 20px;
  border-right: 1px solid var(--line);
}
.trust-item:first-child { border-left: 1px solid var(--line); }
.trust-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  color: var(--blue);
  background: #eaf5ff;
  border-radius: 50%;
  font-weight: 900;
}
.trust-item div:last-child { display: grid; }
.trust-item strong { font-size: 0.9rem; }
.trust-item span { color: var(--muted); font-size: 0.75rem; }

/* ---------- Sections ---------- */
.section { padding: 105px 0; }
.section.gray { background: var(--surface); }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 42px;
}
.section-head > p { max-width: 470px; }

/* ---------- Services ---------- */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.service {
  position: relative;
  min-height: 285px;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.service:hover { transform: translateY(-5px); border-color: #b9c9d8; box-shadow: var(--shadow); }
.service.emergency { border-top: 4px solid var(--red); }
.num { position: absolute; right: 24px; top: 23px; color: #aab7c5; font-size: 0.7rem; font-weight: 900; letter-spacing: 0.1em; }
.svc-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 28px;
  color: var(--blue);
  background: #eaf5ff;
  border-radius: 9px;
  font-size: 1.3rem;
  font-weight: 900;
}
.service.emergency .svc-icon { color: var(--red); background: #fff0f1; }
.service p { margin: 12px 0 22px; font-size: 0.92rem; }
.service a { color: var(--blue); font-size: 0.88rem; font-weight: 850; }

/* ---------- Emergency ---------- */
.emergency-band { padding: 75px 0; background: var(--red); color: var(--white); }
.emergency-in { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.emergency-band .eyebrow { color: #ffd3d7; }
.emergency-band h2 { max-width: 800px; }
.emergency-band p { margin-top: 14px; max-width: 700px; color: #ffdce0; }

/* ---------- Split / content ---------- */
.split,
.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 75px;
}
.copy > p { margin: 20px 0; }
.photo {
  min-height: 480px;
  border-radius: 16px;
  background: center/cover no-repeat;
  box-shadow: var(--shadow);
}
.photo.plumb { background-image: url('assets/images/plumber-working.webp'); }
.photo.heating { background-image: url('assets/images/boiler-installation.webp'); }
.checks { display: grid; gap: 11px; margin: 24px 0 0; padding: 0; list-style: none; }
.checks li { display: flex; gap: 11px; align-items: flex-start; font-weight: 700; }
.checks li::before {
  content: '✓';
  display: grid;
  place-items: center;
  width: 21px;
  height: 21px;
  flex: 0 0 auto;
  margin-top: 2px;
  color: var(--white);
  background: var(--blue);
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 900;
}
.callout {
  display: grid;
  gap: 3px;
  margin: 25px 0;
  padding: 18px;
  background: #edf7ff;
  border-left: 4px solid var(--blue);
  border-radius: 4px;
}
.callout strong { color: var(--navy); }
.callout span { color: var(--muted); }

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.step {
  min-height: 230px;
  padding: 30px;
  background: var(--white);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.step b { color: var(--blue); font-size: 0.72rem; letter-spacing: 0.13em; }
.step h3 { margin: 22px 0 10px; }
.step p { font-size: 0.9rem; }

/* ---------- Gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  grid-template-rows: 250px 250px;
  gap: 12px;
}
.g { position: relative; border-radius: 12px; background: center/cover no-repeat; overflow: hidden; }
.g::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(0,0,0,0.65));
}
.g span { position: absolute; z-index: 1; left: 18px; bottom: 16px; color: var(--white); font-weight: 800; }
.g1 { grid-row: span 2; background-image: url('assets/images/boiler-installation.webp'); }
.g2 { background-image: url('assets/images/copper-pipework.webp'); }
.g3 { background-image: url('assets/images/bathroom-shower.webp'); }
.g4 { background-image: url('assets/images/plumber-working.webp'); }
.g5 { background-image: url('assets/images/hot-water-system.webp'); }

/* ---------- FAQ ---------- */
.faq { max-width: 900px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 23px 0;
  color: var(--navy);
  font-weight: 800;
  list-style: none;
  cursor: pointer;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary span { font-size: 1.3rem; transition: transform 0.2s ease; }
.faq-item[open] summary span { transform: rotate(45deg); }
.faq-answer { padding: 0 50px 22px 0; }

/* ---------- Page hero ---------- */
.page-hero { background: var(--navy); color: var(--white); }
.page-hero-in {
  min-height: 390px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: end;
  gap: 60px;
  padding-block: 70px;
}
.page-hero h1 { max-width: 850px; }
.page-hero h1 span { color: var(--blue-bright); }
.page-hero p { max-width: 500px; padding-bottom: 8px; color: #b8c7d8; font-size: 1.03rem; }
.crumb { color: #7ecbff; }

/* ---------- Contact ---------- */
.contact { background: var(--navy); color: var(--white); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.contact-card {
  min-height: 330px;
  padding: 38px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.045);
  border-radius: 14px;
}
.contact-card p { margin: 20px 0 30px; color: #b8c7d8; max-width: 470px; }
.contact-details { display: grid; gap: 14px; }
.contact-details a {
  color: var(--white);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  font-weight: 850;
}
.contact-details a:hover { color: var(--blue-bright); }
.contact-details .contact-label {
  display: block;
  margin-bottom: -8px;
  color: #7ecbff;
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.contact-action {
  min-height: 330px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 38px;
  background: var(--white);
  color: var(--ink);
  border-radius: 14px;
  box-shadow: var(--shadow);
}
.contact-action h2 { font-size: clamp(2rem, 4vw, 3.4rem); }
.contact-action p { max-width: 520px; margin: 18px 0 26px; }
.contact-buttons { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-dark); color: var(--white); }
.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 1fr;
  gap: 50px;
  padding-block: 70px;
}
.footer-logo img { width: 190px; }
.footer-brand p { max-width: 330px; margin: 18px 0; color: #92a5ba; font-size: 0.9rem; }
.footer-phone { color: var(--white); font-size: 1.15rem; font-weight: 850; }
.footer-col { display: grid; align-content: start; gap: 9px; }
.footer-col h3 { margin-bottom: 10px; font-size: 0.9rem; }
.footer-col a,
.footer-col span { color: #92a5ba; font-size: 0.84rem; }
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: #6f8499;
  font-size: 0.72rem;
}

/* ---------- Mobile call bar ---------- */
.mobile-call-bar { display: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .header-inner { min-height: 74px; }
  .brand img { width: 155px; }
  .header-call { display: none; }
  .menu-toggle { display: block; }

  .main-nav {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: 14px 20px 20px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: stretch;
  }

  .nav-toggle:checked ~ .main-nav { display: flex; }
  .nav-toggle:checked ~ .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle:checked ~ .menu-toggle span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .main-nav > a,
  .nav-dropdown > summary { width: 100%; }
  .dropdown-menu {
    position: static;
    width: 100%;
    padding: 0 0 0 12px;
    border: 0;
    box-shadow: none;
  }

  .hero-in,
  .page-hero-in { grid-template-columns: 1fr; }
  .hero-in { min-height: auto; }
  .page-hero-in { min-height: auto; align-items: start; }
  .hero-photo { min-height: 430px; }
  .trust-in { grid-template-columns: 1fr 1fr; }
  .services { grid-template-columns: 1fr 1fr; }
  .split,
  .content-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr 1fr; grid-template-rows: 220px 220px 220px; }
  .g1 { grid-row: span 2; }
  .g5 { grid-column: 1 / -1; }
  .footer-main { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  body { padding-bottom: 66px; }
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section { padding: 72px 0; }
  h1 { font-size: clamp(2.55rem, 12vw, 4rem); }
  h2 { font-size: 2.35rem; }
  .hero-in { padding-block: 55px; gap: 45px; }
  .hero-photo { min-height: 360px; box-shadow: 12px 12px 0 rgba(8,125,225,0.18); }
  .hero-card { left: 12px; right: 12px; bottom: 12px; flex-wrap: wrap; }
  .hero-card .btn { width: 100%; }
  .hero-meta { gap: 18px; flex-wrap: wrap; }
  .trust-in { grid-template-columns: 1fr; }
  .trust-item { border-left: 1px solid var(--line); }
  .section-head { display: block; }
  .section-head > p { margin-top: 16px; }
  .services { grid-template-columns: 1fr; }
  .service { min-height: 245px; }
  .emergency-in { display: block; }
  .emergency-in .btn { margin-top: 25px; width: 100%; }
  .photo { min-height: 340px; }
  .gallery { grid-template-columns: 1fr; grid-template-rows: repeat(5, 220px); }
  .g1,
  .g5 { grid-column: auto; grid-row: auto; }
  .contact-card,
  .contact-action { min-height: auto; padding: 26px; }
  .contact-buttons { display: grid; }
  .contact-buttons .btn { width: 100%; }
  .footer-main { grid-template-columns: 1fr; gap: 35px; padding-block: 50px; }
  .footer-bottom { display: grid; }

  .mobile-call-bar {
    position: fixed;
    z-index: 100;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 14px;
    background: var(--red);
    color: var(--white);
    box-shadow: 0 -10px 30px rgba(0,0,0,0.16);
  }
  .mobile-call-bar span {
    display: grid;
    font-size: 0.68rem;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 800;
  }
  .mobile-call-bar strong { font-size: 0.9rem; }
  .mobile-call-bar a {
    padding: 10px 14px;
    border-radius: 5px;
    background: var(--white);
    color: var(--red);
    font-weight: 900;
  }
}

/* =========================================================
   Motion & polish
   Progressive enhancement: content remains visible without JS.
   ========================================================= */
body.has-js .reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(.2,.7,.2,1);
  transition-delay: calc(var(--reveal-index, 0) * 55ms);
  will-change: opacity, transform;
}

body.has-js .reveal-on-scroll.is-visible {
  opacity: 1;
  transform: none;
}

body.has-js .reveal-stagger > * {
  transition-delay: calc(var(--reveal-index, 0) * 70ms);
}

.site-header {
  transition: box-shadow 0.25s ease, background 0.25s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.985);
  box-shadow: 0 8px 30px rgba(7, 26, 49, 0.09);
}

.btn {
  position: relative;
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background-color 0.22s ease, border-color 0.22s ease;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(7, 26, 49, 0.14);
}

.btn:active { transform: translateY(-1px) scale(0.99); }

.hero-photo {
  transition: transform 0.8s cubic-bezier(.2,.7,.2,1);
}

.hero-photo:hover { transform: translateY(-4px); }

.photo {
  transition: transform 0.45s ease, box-shadow 0.45s ease;
}

.photo:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 50px rgba(7, 26, 49, 0.16);
}

.service,
.step,
.area-list span,
.contact-card {
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease, background-color 0.28s ease;
}

.service:hover { transform: translateY(-7px); }
.step:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.area-list span:hover { transform: translateY(-3px); box-shadow: 0 10px 25px rgba(7, 26, 49, 0.08); }

.gallery .g {
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.gallery .g::after {
  transition: transform 0.6s ease;
}

.gallery .g:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 42px rgba(7, 26, 49, 0.16);
}

.gallery .g:hover::after { transform: scale(1.045); }

.dropdown-menu {
  transform-origin: top left;
  animation: dropdown-in 0.18s ease both;
}

@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(-7px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}


/* ---------- Editable business information ---------- */
.footer-address {
  margin: 0;
  font-style: normal;
  line-height: 1.7;
}

.contact-details address {
  margin: 0;
  font-style: normal;
  line-height: 1.7;
}