/*
  PlumbCheck Group — site.css (production shared stylesheet)
  Self-hosted fonts (no CDN), design tokens, theme system (light/dark/system + accent),
  glass surfaces, AI-background, and every component used across the pages. Extracted
  from the approved reference pages so production stays DRY. Australian English.
*/

/* ── Self-hosted fonts ── */
@font-face{font-family:'Barlow';font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/barlow-400.woff2') format('woff2')}
@font-face{font-family:'Barlow';font-style:normal;font-weight:500;font-display:swap;src:url('/assets/fonts/barlow-500.woff2') format('woff2')}
@font-face{font-family:'Barlow';font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/barlow-600.woff2') format('woff2')}
@font-face{font-family:'Barlow Condensed';font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/barlow-condensed-600.woff2') format('woff2')}
@font-face{font-family:'Barlow Condensed';font-style:normal;font-weight:700;font-display:swap;src:url('/assets/fonts/barlow-condensed-700.woff2') format('woff2')}
@font-face{font-family:'Barlow Condensed';font-style:normal;font-weight:800;font-display:swap;src:url('/assets/fonts/barlow-condensed-800.woff2') format('woff2')}
@font-face{font-family:'Barlow Condensed';font-style:italic;font-weight:800;font-display:swap;src:url('/assets/fonts/barlow-condensed-800-italic.woff2') format('woff2')}

/* ── Accent palettes ── */
[data-accent="ember"]{--accent:#E8531A;--accent-hi:#ff7a3d;--accent-lo:#c23f0e;--accent-rgb:232,83,26}
[data-accent="teal"]{--accent:#0d9488;--accent-hi:#19c2b1;--accent-lo:#0a6e63;--accent-rgb:13,148,136}
[data-accent="azure"]{--accent:#2f7fe0;--accent-hi:#4f9bf5;--accent-lo:#1f5fb0;--accent-rgb:47,127,224}
[data-accent="violet"]{--accent:#7c5cff;--accent-hi:#9b80ff;--accent-lo:#5e42d6;--accent-rgb:124,92,255}

/* ── Base palettes ── */
[data-mode="dark"]{--bg:#0a0a0b;--bg2:#101012;--bg3:#161618;--glass:rgba(20,20,23,.55);--glass-brd:rgba(255,255,255,.10);--text:#f4f4f5;--text2:#b6b6bd;--text3:#86868f;--hair:rgba(255,255,255,.09);--link:var(--accent);--aurora-a:.55;--grid-a:.05}
[data-mode="light"]{--bg:#f3f2ef;--bg2:#fff;--bg3:#fbfaf8;--glass:rgba(255,255,255,.62);--glass-brd:rgba(0,0,0,.08);--text:#16150f;--text2:#4c4a44;--text3:#7c7970;--hair:rgba(0,0,0,.08);--link:var(--accent-lo);--aurora-a:.30;--grid-a:.04}
:root{--display:'Barlow Condensed',system-ui,sans-serif;--body:'Barlow',system-ui,sans-serif;--container:1160px;--radius:14px;--radius-sm:8px;--ease:cubic-bezier(.4,0,.2,1);--spring:cubic-bezier(.34,1.4,.64,1);--dur:.25s;--glow:0 8px 30px rgba(var(--accent-rgb),.28)}

/* ── Reset & base ── */
*,*::before,*::after{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{font-family:var(--body);background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;transition:background .4s var(--ease),color .4s var(--ease)}
img,svg{display:block;max-width:100%}
a{color:var(--link);text-decoration:none;transition:color .12s var(--ease)} a:hover{color:var(--accent-hi)}
h1,h2,h3,h4{font-family:var(--display);line-height:1.06;letter-spacing:.01em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--radius-sm)}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:24px}
.container-narrow{max-width:980px}
.mt-lg{margin-top:24px}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;top:8px;left:8px;z-index:1200;background:var(--accent);color:#fff;padding:8px 16px;border-radius:var(--radius-sm);font-family:var(--display);font-weight:600;transform:translateY(-150%);transition:transform var(--dur) var(--ease)}
.skip-link:focus{transform:translateY(0)}

/* ── AI-inspired background ── */
.bg-fx{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:var(--aurora-a);will-change:transform;mix-blend-mode:screen}
[data-mode="light"] .blob{mix-blend-mode:multiply}
.blob.b1{width:46vw;height:46vw;left:-8vw;top:-12vw;background:radial-gradient(circle,rgba(var(--accent-rgb),.9),transparent 65%);animation:drift1 24s var(--ease) infinite alternate}
.blob.b2{width:40vw;height:40vw;right:-6vw;top:12vh;background:radial-gradient(circle,rgba(var(--accent-rgb),.5),transparent 65%);animation:drift2 30s var(--ease) infinite alternate}
.bg-grid{position:fixed;inset:0;z-index:-1;pointer-events:none;background-image:linear-gradient(var(--text) 1px,transparent 1px),linear-gradient(90deg,var(--text) 1px,transparent 1px);background-size:54px 54px;opacity:var(--grid-a);-webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 25%,#000,transparent 80%);mask-image:radial-gradient(ellipse 80% 60% at 50% 25%,#000,transparent 80%)}
@keyframes drift1{to{transform:translate3d(8vw,6vh,0) scale(1.15)}}
@keyframes drift2{to{transform:translate3d(-6vw,10vh,0) scale(1.1)}}
.progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:400;background:linear-gradient(90deg,var(--accent),var(--accent-hi));box-shadow:0 0 12px rgba(var(--accent-rgb),.6)}

/* ── Glass ── */
.glass{background:var(--glass);-webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);border:1px solid var(--glass-brd)}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.glass{background:var(--bg2)}}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--display);font-weight:700;font-style:italic;font-size:.95rem;letter-spacing:.05em;text-transform:uppercase;padding:13px 24px;border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;transition:transform .18s var(--spring),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease)}
.btn-primary{background:var(--accent);color:#fff} .btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--glow)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--glass-brd)} .btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* ── Header / nav ── */
.site-header{position:sticky;top:0;z-index:200;border-bottom:1px solid var(--hair)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.brand{display:flex;align-items:center;gap:11px}
.brand .mark{width:30px;height:30px;flex-shrink:0;filter:drop-shadow(0 2px 6px rgba(var(--accent-rgb),.4))}
.mark path{fill:var(--accent)}
.wm{display:flex;flex-direction:column;line-height:1}
.wm-main{font-family:var(--display);font-weight:800;font-style:italic;font-size:1.08rem;letter-spacing:.02em;text-transform:uppercase;color:var(--text)}
.wm-main b{color:var(--accent)}
.wm-sub{font-family:var(--display);font-weight:600;font-size:.56rem;letter-spacing:.46em;text-transform:uppercase;color:var(--text3);margin-top:3px;padding-left:2px}
.nav-links{display:flex;align-items:center;gap:22px;list-style:none}
.nav-links a{color:var(--text2);font-family:var(--display);font-weight:600;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;position:relative}
.nav-links a::after{content:'';position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)}
.nav-links a:hover{color:var(--text)} .nav-links a:hover::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:10px}
.icon-btn{display:grid;place-items:center;width:42px;height:42px;border-radius:var(--radius-sm);background:transparent;border:1px solid var(--glass-brd);color:var(--text);cursor:pointer;transition:border-color .2s var(--ease),color .2s var(--ease)}
.icon-btn:hover{border-color:var(--accent);color:var(--accent)} .icon-btn svg{width:20px;height:20px}
.nav-toggle{display:none} .nav-drawer{display:none}
.theme-wrap{position:relative}
.theme-pop{position:absolute;right:0;top:52px;width:220px;max-width:calc(100vw - 24px);border-radius:var(--radius);padding:16px;z-index:210;display:none;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.theme-pop.open{display:block;animation:pop .2s var(--spring)}
@keyframes pop{from{opacity:0;transform:translateY(-6px) scale(.98)}to{opacity:1;transform:none}}
.theme-pop .theme-label{font-family:var(--display);font-weight:700;letter-spacing:.1em;text-transform:uppercase;font-size:.7rem;color:var(--text3);margin:0 0 8px}
.seg{display:flex;gap:6px;margin-bottom:14px}
.seg button{flex:1;font-family:var(--display);font-weight:600;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;padding:8px 4px;border-radius:var(--radius-sm);border:1px solid var(--glass-brd);background:transparent;color:var(--text2);cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--accent);color:#fff;border-color:var(--accent)}
.swatches{display:flex;gap:10px} .swatch{width:32px;height:32px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:transform .15s var(--spring)}
.swatch:hover{transform:scale(1.12)} .swatch[aria-pressed="true"]{border-color:var(--text)}
.sw-ember{background:#E8531A}.sw-teal{background:#0d9488}.sw-azure{background:#2f7fe0}.sw-violet{background:#7c5cff}

/* ── Reveal-on-scroll ── */
[data-js] [data-reveal]{opacity:.001;transform:translateY(20px);transition:opacity .65s var(--ease),transform .65s var(--ease)}
[data-reveal].in{opacity:1;transform:none}

/* ── Hero & sections ── */
.crumbs{font-family:var(--display);font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-size:.74rem;color:var(--text3);padding-top:28px}
.crumbs a{color:var(--text3)} .crumbs a:hover{color:var(--accent)}
.hero{position:relative;padding:64px 0 72px}
.hero h1{font-size:clamp(2.6rem,7vw,5.4rem);font-weight:800;font-style:italic;text-transform:uppercase}
.hero h1 .o{color:var(--accent)} .hero h1 .g{color:var(--text3)}
.hero p.lead{max-width:60ch;margin-top:18px;font-size:1.12rem;color:var(--text2)} .hero p.lead b{color:var(--text)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
section{padding:80px 0;position:relative}
.eyebrow{font-family:var(--display);font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-size:.8rem}
.section-title{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:800;font-style:italic;text-transform:uppercase;margin-top:8px;color:var(--text)}
.section-intro{max-width:62ch;color:var(--text2);margin-top:14px}

/* ── FAQ (native <details>, no JS, accessible by default) ── */
.faq{display:grid;gap:10px;margin-top:28px}
.faq details{border:1px solid var(--glass-brd);border-radius:var(--radius-sm);background:var(--bg2)}
.faq summary{cursor:pointer;list-style:none;padding:16px 18px;font-family:var(--display);font-weight:600;font-size:1.04rem;color:var(--text);display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';font-size:1.4rem;line-height:1;color:var(--accent);flex:0 0 auto}
.faq details[open] summary::after{content:'\2212'}
.faq summary:hover{color:var(--accent)}
.faq .a{padding:0 18px 16px;color:var(--text2);font-size:.94rem}
.faq .a a{font-weight:600}

/* ── Card grids (services, steps, benefits, coverage) ── */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:36px}
.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:36px}
.card{border-radius:var(--radius);padding:24px;transition:transform .25s var(--spring),box-shadow .25s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--glow)}
.card svg.ic{width:26px;height:26px;color:var(--accent)}
.card h3,.card h4{margin-top:12px;font-size:1.2rem;text-transform:uppercase;font-style:italic;color:var(--text)}
.card p{color:var(--text2);font-size:.9rem;margin-top:6px}
.card a.more{display:inline-block;margin-top:14px;font-family:var(--display);font-weight:700;font-style:italic;text-transform:uppercase;font-size:.82rem;letter-spacing:.04em}
.step .n{font-family:var(--display);font-weight:800;font-style:italic;font-size:2.2rem;color:var(--accent);line-height:1}
.feature-list{list-style:none;margin-top:18px;display:grid;gap:10px}
.feature-list li{display:flex;gap:10px;align-items:flex-start;color:var(--text)}
.feature-list svg{width:18px;height:18px;color:var(--accent);flex-shrink:0;margin-top:3px}

/* ── Forms ── */
.form-card{border-radius:var(--radius);padding:30px}
.field{margin-bottom:16px} .field label{display:block;font-family:var(--display);font-weight:600;letter-spacing:.04em;text-transform:uppercase;font-size:.78rem;color:var(--text2);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;background:var(--bg2);border:1px solid var(--glass-brd);border-radius:var(--radius-sm);color:var(--text);font-family:var(--body);font-size:1rem;padding:11px 13px;transition:border-color .15s var(--ease),box-shadow .15s var(--ease)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(var(--accent-rgb),.18)}
.field textarea{resize:vertical;min-height:96px}
.field input[type="file"]{padding:9px;cursor:pointer}
.field .err{display:none;color:var(--accent-hi);font-size:.8rem;margin-top:5px}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--accent-hi)} .field.invalid .err{display:block}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.btn-form{width:100%;justify-content:center} .btn-form[aria-busy="true"]{opacity:.7;pointer-events:none}
.form-alert{display:none;margin-top:14px;padding:11px 14px;border-radius:var(--radius-sm);font-size:.9rem;background:rgba(var(--accent-rgb),.1);color:var(--accent-hi);border:1px solid rgba(var(--accent-rgb),.3)}
.form-alert.show{display:block}
.form-success{display:none;text-align:center;padding:28px 10px}
.form-success.show{display:block;animation:fade .35s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.form-success svg{width:50px;height:50px;color:var(--accent);margin:0 auto 12px}
.form-success h3{font-size:1.5rem;text-transform:uppercase;font-style:italic;color:var(--text)}
.form-success p{color:var(--text2);margin-top:8px}
.disclaimer{margin-top:6px;padding:12px 14px;border-left:3px solid var(--accent);background:rgba(var(--accent-rgb),.06);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:.88rem;color:var(--text2)}

/* ── Footer ── */
.site-footer{border-top:1px solid var(--hair);padding:56px 0 28px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.site-footer h2{font-family:var(--display);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:.85rem;color:var(--text);margin-bottom:14px}
.site-footer ul{list-style:none;display:grid;gap:9px} .site-footer a{color:var(--text2);font-size:.9rem} .site-footer a:hover{color:var(--accent)}
.foot-brand p{color:var(--text3);font-size:.9rem;margin-top:12px;max-width:34ch}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;border-top:1px solid var(--hair);margin-top:36px;padding-top:20px;color:var(--text3);font-size:.82rem}
.to-top{position:fixed;right:20px;bottom:20px;z-index:300;width:44px;height:44px;border-radius:var(--radius-sm);background:var(--accent);color:#fff;border:0;cursor:pointer;display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s var(--spring)}
.to-top.show{opacity:1;visibility:visible;transform:none} .to-top svg{width:22px;height:22px}

/* ── Responsive ── */
@media(max-width:900px){.grid-3,.grid-4,.grid-5{grid-template-columns:repeat(2,1fr)}.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:760px){
  .nav-links,.nav-cta .btn-ghost{display:none}
  .nav-toggle{display:grid}
  .nav-drawer{position:fixed;inset:72px 0 auto 0;padding:20px 24px;display:none;flex-direction:column;gap:6px;z-index:199}
  .nav-drawer.open{display:flex}
  .nav-drawer a{color:var(--text);font-family:var(--display);font-weight:600;text-transform:uppercase;letter-spacing:.06em;padding:12px 0;border-bottom:1px solid var(--hair)}
  section{padding:56px 0}
  .grid-3{grid-template-columns:1fr} .row-2{grid-template-columns:1fr}
}
@media(max-width:520px){.grid-4,.grid-5,.foot-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .blob{animation:none} [data-reveal]{opacity:1;transform:none}
}