/* ============================================
   Pool Surface Solutions — Design tokens
   Palette named after epoxy pool-paint swatches
   ============================================ */
:root{
  --riviera: #1470A8;      /* pool blue — primary (brightened from original deep navy) */
  --riviera-dark: #0D5E92;
  --aquamarine: #14958A;   /* pool-water teal — secondary */
  --sun: #E4572E;          /* QLD sun accent — CTA warmth against cool water */
  --foam: #F7F6F2;         /* bg, like sun-bleached render */
  --concrete: #EDEAE3;     /* alt bg / cards */
  --charcoal: #16232A;     /* text */
  --mist: #6C7E86;         /* muted text */
  --line: #DAD5C9;         /* hairline borders */

  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --wrap: 1180px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--foam);
  color:var(--charcoal);
  font-family:var(--font-body);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ol,ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3{ font-family:var(--font-display); font-weight:700; margin:0; line-height:1.05; }

.wrap{ max-width:var(--wrap); margin-inline:auto; padding-inline:24px; }

.skip-link{
  position:absolute; left:-999px; top:0; background:var(--riviera); color:#fff;
  padding:12px 20px; z-index:200;
}
.skip-link:focus{ left:24px; top:24px; }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(247,246,242,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-row{
  display:flex; align-items:center; justify-content:space-between;
  height:76px; gap:24px;
}
.logo{
  font-family:var(--font-display); font-weight:700; font-size:1.25rem;
  color:var(--riviera); letter-spacing:-0.01em;
}
.logo span{ color:var(--aquamarine); }
.main-nav{ display:flex; gap:28px; margin-inline:auto; }
.main-nav a{
  font-size:1.1rem; font-weight:500; color:var(--charcoal);
  position:relative; padding:4px 0;
}
.main-nav a:hover{ color:var(--riviera); }
.main-nav a:focus-visible{ outline:2px solid var(--riviera); outline-offset:4px; }

.phone-cta{
  display:flex; flex-direction:column; align-items:flex-end;
  border:1.5px solid var(--riviera); border-radius:999px;
  padding:8px 18px; font-size:0.85rem;
}
.phone-label{ color:var(--mist); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.06em; }
.phone-number{ font-weight:600; color:var(--riviera); font-family:var(--font-mono); }
.phone-cta:hover{ background:var(--riviera); }
.phone-cta:hover .phone-label,.phone-cta:hover .phone-number{ color:#fff; }

.nav-toggle{
  display:none; background:none; border:none; cursor:pointer;
  flex-direction:column; gap:5px; padding:8px;
}
.nav-toggle span{ width:22px; height:2px; background:var(--charcoal); display:block; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:14px 26px; border-radius:999px; font-weight:600; font-size:0.95rem;
  transition:transform .15s ease, background .15s ease, color .15s ease;
  border:1.5px solid transparent;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:var(--sun); color:#fff; }
.btn-primary:hover{ background:#C64522; }
.btn-ghost{ border-color:var(--charcoal); color:var(--charcoal); }
.btn-ghost:hover{ background:var(--charcoal); color:#fff; }
.btn-primary-inverse{ background:#fff; color:var(--riviera-dark); }
.btn-ghost-inverse{ border-color:rgba(255,255,255,0.6); color:#fff; }
.btn-ghost-inverse:hover{ background:rgba(255,255,255,0.12); }

/* ---------- Hero ---------- */
.hero{
  position:relative; overflow:hidden;
  background:radial-gradient(ellipse at top left, var(--riviera) 0%, var(--riviera-dark) 65%);
  color:#fff; padding-top:88px; padding-bottom:64px;
}
.caustics{
  position:absolute; inset:0; opacity:0.35; mix-blend-mode:screen;
  background:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.25) 0, transparent 22%),
    radial-gradient(circle at 70% 20%, rgba(255,255,255,0.18) 0, transparent 18%),
    radial-gradient(circle at 45% 70%, rgba(20,149,138,0.35) 0, transparent 25%),
    radial-gradient(circle at 85% 65%, rgba(255,255,255,0.15) 0, transparent 20%);
  background-size:180% 180%;
  animation:causticsDrift 22s ease-in-out infinite alternate;
}
@keyframes causticsDrift{
  0%{ background-position:0% 0%, 100% 0%, 50% 100%, 100% 100%; }
  100%{ background-position:15% 20%, 80% 15%, 40% 80%, 85% 70%; }
}
.hero-inner{ position:relative; z-index:2; padding-top:40px; }
.eyebrow{
  font-family:var(--font-mono); font-size:0.95rem; letter-spacing:0.08em; text-transform:uppercase;
  color:rgba(255,255,255,0.75); margin:0 0 18px;
}
.hero .eyebrow{ font-size:1.56rem; max-width:32ch; }
.hero h1{ font-size:clamp(2.6rem, 6vw, 4.4rem); max-width:14ch; }
.hero-lede{ max-width:46ch; font-size:1.1rem; color:rgba(255,255,255,0.85); margin:22px 0 32px; }
.hero-ctas{ display:flex; gap:16px; flex-wrap:wrap; }

/* Before/after slider */
.hero-photo-wrap{ position:relative; z-index:2; margin-top:56px; }
.hero-photo{
  height:min(50vw, 420px); border-radius:20px; overflow:hidden;
  box-shadow:0 30px 60px -20px rgba(0,0,0,0.5);
}
.hero-photo img{ width:100%; height:100%; object-fit:cover; display:block; }

.ba-slider-wrap{ position:relative; z-index:2; margin-top:56px; }
.ba-slider{
  position:relative; height:min(50vw, 420px); border-radius:20px; overflow:hidden;
  box-shadow:0 30px 60px -20px rgba(0,0,0,0.5);
}
.ba-panel{ position:absolute; inset:0; display:flex; align-items:flex-end; padding:20px; background:#233; }
.ba-panel img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; z-index:0; }
/* Both panels need their own explicit z-index (not just position:absolute) so each
   forms its own stacking context — otherwise .ba-before's tag (having no clip-path
   of its own to contain it) escapes to paint above the entire .ba-after layer instead
   of staying beneath it, regardless of slider position. */
.ba-before{ z-index:1; justify-content:flex-end; }
.ba-after{ z-index:2; clip-path:inset(0 50% 0 0); }
.ba-tag{
  position:relative; z-index:1;
  font-family:var(--font-mono); font-size:0.75rem; text-transform:uppercase; letter-spacing:0.06em;
  background:rgba(0,0,0,0.45); color:#fff; padding:6px 12px; border-radius:999px;
}
.ba-handle{
  position:absolute; top:0; bottom:0; width:0; transform:translateX(-50%);
  display:flex; align-items:center; justify-content:center; pointer-events:none;
}
.ba-handle::before{
  content:""; position:absolute; top:0; bottom:0; width:2px; background:#fff;
}
.ba-handle-grip{
  width:44px; height:44px; border-radius:50%; background:#fff; color:var(--riviera);
  display:flex; align-items:center; justify-content:center; font-size:1.1rem; box-shadow:0 4px 14px rgba(0,0,0,0.25);
}
#ba-range{
  position:absolute; inset:0; width:100%; height:100%; margin:0; opacity:0;
  cursor:ew-resize;
}
.ba-caption{ font-size:0.85rem; color:rgba(255,255,255,0.65); margin-top:14px; }

/* ---------- Two paths ---------- */
.paths{ padding:96px 0; }
.path-grid{ display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.path-card{
  background:var(--concrete); border:1px solid var(--line); border-radius:20px;
  padding:40px; display:flex; flex-direction:column; gap:14px;
  transition:box-shadow .2s ease, transform .2s ease;
}
.path-card:hover{ box-shadow:0 20px 40px -24px rgba(11,74,111,0.35); transform:translateY(-3px); }
.path-card-commercial{ background:var(--riviera); color:#fff; }
.path-eyebrow{
  font-family:var(--font-mono); font-size:0.95rem; text-transform:uppercase; letter-spacing:0.08em;
  color:var(--aquamarine);
}
.path-card-commercial .path-eyebrow{ color:#7FD8CE; }
.path-card h2{ font-size:1.6rem; }
.path-card p{ color:var(--mist); max-width:42ch; }
.path-card-commercial p{ color:rgba(255,255,255,0.8); }
.path-link{ margin-top:auto; font-weight:600; }

/* ---------- Process ---------- */
.process{ padding:96px 0; background:var(--concrete); }
.section-eyebrow{
  font-family:var(--font-mono); font-size:0.95rem; text-transform:uppercase; letter-spacing:0.08em;
  color:var(--aquamarine); margin:0 0 10px;
}
.process h2{ font-size:2rem; margin-bottom:48px; max-width:20ch; }
.process-list{ display:grid; grid-template-columns:repeat(4,1fr); gap:28px; }
.process-num{ font-family:var(--font-mono); color:var(--sun); font-size:0.95rem; }
.process-list h3{ font-size:1.15rem; margin:10px 0 8px; }
.process-list p{ color:var(--mist); font-size:0.95rem; }

/* ---------- Stats ---------- */
.stats{ padding:72px 0 24px; text-align:center; }
.stats-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.stat-num{ display:block; font-family:var(--font-display); font-size:2.6rem; color:var(--riviera); font-weight:700; }
.stat-label{ font-size:0.85rem; color:var(--mist); }
.stats-note{ text-align:center; font-size:0.8rem; color:var(--mist); margin-top:28px; font-style:italic; }

/* ---------- Testimonial ---------- */
.testimonial{ padding:96px 0; }
.testimonial blockquote{ max-width:56ch; margin:0 auto; text-align:center; }
.testimonial p{ font-family:var(--font-display); font-size:1.5rem; font-weight:500; line-height:1.35; }
.testimonial cite{ display:block; margin-top:20px; font-style:normal; color:var(--mist); font-family:var(--font-mono); font-size:0.85rem; }

/* ---------- CTA band ---------- */
.cta-band{ background:var(--riviera-dark); color:#fff; padding:80px 0; }
.cta-band-inner{ display:flex; align-items:center; justify-content:space-between; gap:32px; flex-wrap:wrap; }
.cta-band h2{ font-size:2rem; max-width:16ch; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--charcoal); color:rgba(255,255,255,0.85); padding-top:64px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:32px; padding-bottom:48px; }
.footer-logo{ color:#fff; }
.footer-logo span{ color:var(--aquamarine); }
.footer-addr{ color:rgba(255,255,255,0.6); margin-top:10px; font-size:0.9rem; }
.footer-heading{ font-family:var(--font-mono); text-transform:uppercase; font-size:0.75rem; letter-spacing:0.06em; color:rgba(255,255,255,0.5); margin-bottom:12px; }
.footer-col a{ display:block; padding:4px 0; font-size:0.92rem; color:rgba(255,255,255,0.85); }
.footer-col a:hover{ color:var(--aquamarine); }
.footer-bottom{ border-top:1px solid rgba(255,255,255,0.12); padding:20px 24px; font-size:0.8rem; color:rgba(255,255,255,0.5); }

/* ---------- Motion & focus ---------- */
:focus-visible{ outline:2px solid var(--sun); outline-offset:3px; }
@media (prefers-reduced-motion: reduce){
  .caustics{ animation:none; }
  html{ scroll-behavior:auto; }
}

/* ---------- Page hero (interior pages) ---------- */
.page-hero{
  position:relative; overflow:hidden;
  background:radial-gradient(ellipse at top left, var(--riviera) 0%, var(--riviera-dark) 65%);
  color:#fff; padding:128px 0 64px;
}
.page-hero .wrap{ position:relative; z-index:2; }
.page-hero h1{ font-size:clamp(2.2rem, 5vw, 3.4rem); max-width:18ch; }
.page-hero .hero-lede{ margin-top:18px; }
.page-hero-commercial{ background:radial-gradient(ellipse at top left, var(--riviera-dark) 0%, var(--charcoal) 70%); }

/* ---------- Generic section rhythm ---------- */
.section{ padding:96px 0; }
.section-alt{ background:var(--concrete); }
.section-narrow{ max-width:840px; }
.section-head{ margin-bottom:48px; max-width:60ch; }
.section-head h2{ font-size:2rem; margin-top:10px; }
.section-head p{ color:var(--mist); margin-top:14px; font-size:1.05rem; }

/* ---------- Suburb / area chips ---------- */
.chip-row{ display:flex; flex-wrap:wrap; gap:10px; margin-top:20px; }
.chip{
  font-family:var(--font-mono); font-size:0.82rem; padding:8px 16px;
  border-radius:999px; background:var(--concrete); border:1px solid var(--line); color:var(--charcoal);
}
.path-card-commercial .chip, .page-hero .chip{ background:rgba(255,255,255,0.12); border-color:rgba(255,255,255,0.25); color:#fff; }

/* ---------- Icon list (why us / signs) ---------- */
.check-list{ display:grid; gap:16px; }
.check-list li{ display:flex; gap:14px; align-items:flex-start; }
.check-list .mark{
  flex:0 0 auto; width:26px; height:26px; border-radius:50%; background:var(--aquamarine); color:#fff;
  display:flex; align-items:center; justify-content:center; font-size:0.8rem; font-weight:700; margin-top:2px;
}
.check-list p{ margin:0; color:var(--charcoal); }
.check-list .check-title{ font-weight:600; display:block; margin-bottom:2px; }

/* ---------- Gallery ---------- */
.gallery-filter{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:32px; }
.filter-btn{
  font-family:var(--font-mono); font-size:0.82rem; padding:10px 20px; border-radius:999px;
  border:1.5px solid var(--line); background:#fff; cursor:pointer; color:var(--charcoal);
}
.filter-btn.is-active{ background:var(--riviera); border-color:var(--riviera); color:#fff; }
.gallery-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.gallery-item{ position:relative; border-radius:16px; overflow:hidden; background:var(--concrete); aspect-ratio:4/3; }
.gallery-item img{ width:100%; height:100%; object-fit:cover; display:block; cursor:zoom-in; transition:transform .3s ease; }
.gallery-item img:hover{ transform:scale(1.04); }
.gallery-tag{
  position:absolute; top:12px; left:12px; font-family:var(--font-mono); font-size:0.7rem;
  text-transform:uppercase; letter-spacing:0.06em; padding:5px 11px; border-radius:999px;
  background:rgba(8,47,71,0.75); color:#fff; backdrop-filter:blur(4px);
}
.gallery-caption{
  position:absolute; left:0; right:0; bottom:0; padding:14px; font-size:0.85rem;
  background:linear-gradient(to top, rgba(8,47,71,0.85), transparent); color:#fff;
}
.gallery-item[data-cat="commercial"] .gallery-tag{ background:rgba(228,87,46,0.85); }

/* ---------- Case study cards (commercial) ---------- */
.case-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.case-card{ background:#fff; border:1px solid var(--line); border-radius:18px; padding:28px; }
.case-card .case-type{ font-family:var(--font-mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.06em; color:var(--aquamarine); }
.case-card h3{ font-size:1.2rem; margin:10px 0 10px; }
.case-card p{ color:var(--mist); font-size:0.95rem; }
.case-card .case-stats{ display:flex; gap:18px; margin-top:16px; padding-top:16px; border-top:1px solid var(--line); }
.case-card .case-stat b{ display:block; font-family:var(--font-display); color:var(--riviera); font-size:1.15rem; }
.case-card .case-stat span{ font-size:0.75rem; color:var(--mist); }

/* ---------- FAQ ---------- */
.faq-list{ display:grid; gap:2px; }
.faq-item{ background:#fff; border:1px solid var(--line); border-radius:14px; padding:6px 24px; margin-bottom:12px; }
.faq-item summary{
  cursor:pointer; padding:18px 0; font-weight:600; font-family:var(--font-display); font-size:1.05rem;
  list-style:none; display:flex; justify-content:space-between; align-items:center; gap:16px;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:"+"; font-size:1.4rem; color:var(--aquamarine); flex:0 0 auto; }
.faq-item[open] summary::after{ content:"–"; }
.faq-item p{ color:var(--mist); margin:0 0 18px; max-width:70ch; }

/* ---------- Forms ---------- */
.form-card{ background:#fff; border:1px solid var(--line); border-radius:20px; padding:36px; }
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.field{ display:flex; flex-direction:column; gap:6px; margin-bottom:18px; }
.field-full{ grid-column:1 / -1; }
.field label{ font-size:0.82rem; font-weight:600; color:var(--charcoal); }
.field input, .field select, .field textarea{
  font-family:var(--font-body); font-size:0.95rem; padding:12px 14px; border-radius:10px;
  border:1.5px solid var(--line); background:var(--foam); color:var(--charcoal); resize:vertical;
}
.field input:focus, .field select:focus, .field textarea:focus{ outline:none; border-color:var(--riviera); background:#fff; }
.form-note{ font-size:0.8rem; color:var(--mist); margin-top:4px; }
.form-submit{ margin-top:8px; }

/* ---------- Contact split ---------- */
.contact-split{ display:grid; grid-template-columns:1fr 1fr; gap:32px; align-items:start; }
.contact-info-card{ background:var(--riviera); color:#fff; border-radius:20px; padding:36px; }
.contact-info-card a{ display:block; margin-top:6px; }
.contact-info-card .footer-heading{ color:rgba(255,255,255,0.6); margin-top:24px; }
.contact-info-card .footer-heading:first-child{ margin-top:0; }

/* ---------- Two-column split (about) ---------- */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.split img{ border-radius:20px; }
.credential-grid{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:28px; }
.credential{ background:var(--concrete); border-radius:14px; padding:18px 20px; }
.credential b{ display:block; font-family:var(--font-display); color:var(--riviera); }
.credential span{ font-size:0.85rem; color:var(--mist); }

/* ---------- Responsive ---------- */
@media (max-width:640px){
  .header-row{ height:64px; }
  .logo{ font-size:1.05rem; }
  .phone-label{ display:none; }
  .phone-cta{ padding:6px 12px; align-items:center; }
  .phone-number{ font-size:0.8rem; }
}
@media (max-width:900px){
  .main-nav{
    display:flex; flex-direction:column; position:absolute; top:76px; left:0; right:0;
    background:var(--foam); border-bottom:1px solid var(--line); padding:12px 24px;
    transform:translateY(-8px); opacity:0; pointer-events:none; transition:opacity .18s ease, transform .18s ease;
  }
  .main-nav.is-open{ opacity:1; transform:translateY(0); pointer-events:auto; }
  .main-nav a{ padding:12px 0; border-bottom:1px solid var(--line); }
  .nav-toggle{ display:flex; }
  .path-grid{ grid-template-columns:1fr; }
  .process-list{ grid-template-columns:1fr 1fr; }
  .stats-grid{ grid-template-columns:repeat(3,1fr); }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .gallery-grid{ grid-template-columns:1fr 1fr; }
  .case-grid{ grid-template-columns:1fr; }
  .contact-split{ grid-template-columns:1fr; }
  .split{ grid-template-columns:1fr; }
  .form-grid{ grid-template-columns:1fr; }
}
@media (max-width:560px){
  .process-list{ grid-template-columns:1fr; }
  .stats-grid{ grid-template-columns:1fr; max-width:280px; margin-inline:auto; gap:32px; }
  .footer-grid{ grid-template-columns:1fr; }
  .cta-band-inner{ flex-direction:column; align-items:flex-start; }
  .gallery-grid{ grid-template-columns:1fr; }
  .credential-grid{ grid-template-columns:1fr; }
  .form-card{ padding:24px; }
}

/* ---------- Lightbox ---------- */
.lightbox{
  position:fixed; inset:0; z-index:300; display:none;
  align-items:center; justify-content:center;
  background:rgba(8,16,20,0.92); backdrop-filter:blur(4px);
  padding:min(6vh,60px) min(6vw,60px);
}
.lightbox.is-open{ display:flex; }
.lightbox-figure{
  position:relative; max-width:100%; max-height:100%;
  display:flex; flex-direction:column; align-items:center;
}
.lightbox-img{
  max-width:100%; max-height:88vh; border-radius:10px;
  box-shadow:0 30px 70px -20px rgba(0,0,0,0.6);
  opacity:0; transform:scale(0.97); transition:opacity .2s ease, transform .2s ease;
}
.lightbox-img.is-visible{ opacity:1; transform:scale(1); }
.lightbox-counter{
  margin-top:14px; color:rgba(255,255,255,0.7); font-family:var(--font-mono); font-size:0.8rem; letter-spacing:0.04em;
}
.lightbox-close{
  position:absolute; top:-6px; right:-6px; transform:translate(50%,-50%); z-index:2;
  width:44px; height:44px; border-radius:50%; border:none; cursor:pointer;
  background:#fff; color:var(--charcoal); font-size:1.3rem; line-height:1;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 8px 20px -6px rgba(0,0,0,0.4);
}
.lightbox-close:hover{ background:var(--sun); color:#fff; }
.lightbox-nav{
  position:absolute; top:50%; transform:translateY(-50%); z-index:2;
  width:52px; height:52px; border-radius:50%; cursor:pointer;
  border:1.5px solid rgba(255,255,255,0.85);
  background:rgba(8,16,20,0.55); color:#fff; font-size:1.5rem; line-height:1;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 6px 16px -4px rgba(0,0,0,0.5);
  transition:background .15s ease;
}
.lightbox-nav:hover{ background:rgba(8,16,20,0.8); }
.lightbox-prev{ left:calc(min(6vw,60px) * -1 + 8px); }
.lightbox-next{ right:calc(min(6vw,60px) * -1 + 8px); }
@media (max-width:900px){
  .lightbox{ padding:14vh 12px 10px; }
  .lightbox-nav{ width:44px; height:44px; font-size:1.25rem; }
  .lightbox-prev{ left:4px; }
  .lightbox-next{ right:4px; }
  .lightbox-close{ top:-46px; right:0; transform:none; }
}