/* ==========================================================================
   Richie Backflow Testing — design system
   Palette grounded in the subject: deep water navy, clean-water teal,
   and brass (the material of the backflow assemblies themselves).
   ========================================================================== */

:root{
  --ink:#0B2545;        /* deep navy ink — headings, dark sections */
  --harbor:#13315C;     /* secondary deep blue */
  --harbor-2:#1C3F6E;
  --teal:#0FA3B1;       /* clean potable-water accent */
  --teal-deep:#0B7E89;
  --brass:#D49A35;      /* action / CTA — the brass valve */
  --brass-deep:#B07C1E;
  --brass-soft:#F3E3C4;
  --mist:#EEF4F8;       /* cool off-white background */
  --mist-2:#E2ECF4;
  --paper:#FFFFFF;
  --slate:#56697C;      /* muted body text on light */
  --slate-2:#7A8A9A;
  --line:#D8E3EC;       /* hairline borders */
  --ink-line:rgba(255,255,255,.14);

  --maxw:1180px;
  --radius:18px;
  --radius-sm:12px;
  --shadow-sm:0 1px 2px rgba(11,37,69,.06), 0 4px 16px rgba(11,37,69,.06);
  --shadow:0 10px 30px rgba(11,37,69,.10), 0 2px 8px rgba(11,37,69,.06);
  --shadow-lg:0 30px 70px rgba(11,37,69,.18);

  --font-display:"Bricolage Grotesque",system-ui,sans-serif;
  --font-body:"Inter",system-ui,-apple-system,sans-serif;

  --ease:cubic-bezier(.2,.7,.2,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---- type ---- */
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.05;letter-spacing:-.02em;margin:0;color:var(--ink)}
h1{font-size:clamp(2.3rem,5.2vw,4rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.9rem)}
h3{font-size:clamp(1.15rem,1.6vw,1.4rem);letter-spacing:-.01em}
p{margin:0 0 1em}
.lead{font-size:clamp(1.05rem,1.5vw,1.28rem);color:var(--slate);line-height:1.55}

.eyebrow{
  font-family:var(--font-body);
  font-weight:700;font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--teal-deep);display:inline-flex;align-items:center;gap:.55em;margin-bottom:1rem;
}
.eyebrow svg{width:16px;height:16px;flex:none}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--brass);border-radius:2px}
.on-dark .eyebrow{color:#7FD8E2}
.on-dark .eyebrow::before{background:var(--brass)}

/* brass underline motif — evolves the original logo's gold underline */
.brass-mark{position:relative;display:inline-block}
.brass-mark::after{
  content:"";position:absolute;left:0;right:0;bottom:-.12em;height:.16em;
  background:linear-gradient(90deg,var(--brass),var(--brass-deep));border-radius:4px;
}

/* ---- buttons ---- */
.btn{
  --bg:var(--brass);--fg:#3a2a07;
  font-family:var(--font-body);font-weight:700;font-size:1rem;
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.92em 1.5em;border-radius:999px;border:0;cursor:pointer;
  background:var(--bg);color:var(--fg);transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s;
  box-shadow:0 6px 18px rgba(176,124,30,.28);white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(176,124,30,.36)}
.btn:active{transform:translateY(0)}
.btn--ghost{--bg:transparent;--fg:var(--ink);border:1.5px solid var(--line);box-shadow:none}
.btn--ghost:hover{border-color:var(--teal);color:var(--teal-deep);box-shadow:none}
.on-dark .btn--ghost{--fg:#fff;border-color:var(--ink-line)}
.on-dark .btn--ghost:hover{border-color:#7FD8E2;color:#fff}
.btn--lg{font-size:1.08rem;padding:1.05em 1.8em}
.btn svg{width:1.05em;height:1.05em}

a.calllink{font-variant-numeric:tabular-nums}

/* ============================ HEADER ============================ */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--line);
}
.bar{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:9px;font-family:var(--font-display);font-weight:800;font-size:1.05rem;color:var(--ink);letter-spacing:-.02em}
.brand .logo{width:38px;height:38px;flex:none}
.brand small{display:block;white-space:nowrap;font-family:var(--font-body);font-weight:600;font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-deep);margin-top:1px}
.nav{display:none;gap:6px;margin-left:auto}
.nav a{padding:.55em .85em;border-radius:9px;font-weight:600;font-size:.95rem;color:var(--harbor);transition:background .15s,color .15s}
.nav a:hover{background:var(--mist);color:var(--ink)}
.header-cta{display:flex;align-items:center;gap:14px}
.header-phone{display:none;flex-direction:column;line-height:1.05;text-align:right}
.header-phone .lbl{font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--slate-2);font-weight:700}
.header-phone .num{font-family:var(--font-display);font-weight:800;font-size:1.18rem;color:var(--ink)}
.nav-toggle{display:block;background:none;border:0;padding:8px;cursor:pointer;color:var(--ink)}
.nav-toggle svg{width:26px;height:26px}

/* ============================ HERO (mobile-first) ============================ */
.hero{position:relative;background:radial-gradient(140% 120% at 85% -10%,#16406F 0%,var(--ink) 60%);color:#fff;overflow:hidden}
.hero::before{ /* faint flow lines */
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(40% 60% at 100% 0%,rgba(15,163,177,.20),transparent 60%),
    radial-gradient(30% 50% at 0% 100%,rgba(212,154,53,.12),transparent 60%);
  pointer-events:none;
}
.hero .wrap{position:relative;display:grid;gap:20px;padding:22px 20px 36px}
.hero h1{color:#fff}
.hero h1 .accent{color:#7FD8E2}
.hero .lead{color:#C7D6E6;margin:.6rem 0 1.2rem;max-width:42ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:stretch}
.hero-cta .btn{flex:1 1 100%}          /* full-width tappable CTAs on mobile */
.hero-chips{display:flex;flex-wrap:wrap;gap:10px 18px;padding-top:1.4rem;border-top:1px solid var(--ink-line)}
.chip{display:inline-flex;align-items:center;gap:.5em;font-size:.92rem;color:#CFE0EE;font-weight:500}
.chip svg{width:18px;height:18px;color:#7FD8E2;flex:none}

/* hero image (placeholder: backflow-image.png) */
.hero-visual{position:relative;aspect-ratio:16/12;border-radius:var(--radius)}
.hero-img{
  position:absolute;inset:0;z-index:2;width:100%;height:100%;display:block;
  border-radius:var(--radius);object-fit:cover;
  box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.14);
  opacity:0;transition:opacity .45s var(--ease);   /* hidden until the real file loads */
}
.hero-img.is-loaded{opacity:1}
/* labeled placeholder shown until backflow-image.png exists */
.hero-ph{
  position:absolute;inset:0;z-index:1;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:6px;text-align:center;
  border-radius:var(--radius);border:1.5px dashed rgba(127,216,226,.5);
  background:linear-gradient(135deg,#143a63,#0B2545);color:#9FC2D8;
}
.hero-ph-ico{width:46px;height:46px;display:grid;place-items:center;border-radius:12px;
  background:rgba(127,216,226,.14);color:#7FD8E2;margin-bottom:2px}
.hero-ph-ico svg{width:26px;height:26px}
.hero-ph-t{font-family:var(--font-display);font-weight:800;font-size:1rem;color:#DCEAF3;letter-spacing:.01em}
.hero-ph-s{font-size:.82rem;letter-spacing:.04em;text-transform:uppercase;color:#7FA3BD}
.float-note{position:absolute;background:var(--paper);box-shadow:var(--shadow);border-radius:12px;padding:10px 14px;display:flex;align-items:center;gap:10px;font-weight:700;font-size:.85rem;color:var(--ink);z-index:3}
.float-note .dot{width:32px;height:32px;border-radius:9px;background:var(--brass-soft);color:var(--brass-deep);display:grid;place-items:center;flex:none}
.float-note .dot svg{width:17px;height:17px}
.float-note.fn1{left:10px;bottom:-14px;transform:rotate(-2deg)}

/* tablet up: roomier hero, side-by-side CTAs */
@media(min-width:560px){
  .hero .wrap{padding:44px 24px 52px}
  .hero-cta .btn{flex:0 1 auto}
}
/* desktop: two-column hero, image on the right */
@media(min-width:980px){
  .hero .wrap{
    grid-template-columns:1.05fr .95fr;
    grid-template-areas:"copy visual" "chips visual";
    column-gap:54px;row-gap:24px;align-items:center;
    padding:clamp(56px,7vw,92px) 24px;
  }
  .hero-copy{grid-area:copy}
  .hero-visual{grid-area:visual}
  .hero-chips{grid-area:chips;margin-top:.5rem}
  .hero .lead{max-width:36ch}
  .float-note.fn1{left:-18px;bottom:-26px}
}


/* ============================ trust strip ============================ */
.trust{background:var(--ink);color:#fff;border-top:1px solid var(--ink-line)}
.trust .wrap{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:24px 20px}
.trust .item{display:flex;gap:12px;align-items:flex-start}
.trust .item svg{width:26px;height:26px;color:var(--brass);flex:none;margin-top:2px}
.trust .item b{font-family:var(--font-display);font-size:1rem;display:block}
.trust .item span{font-size:.84rem;color:#A9C0D6;line-height:1.4}

/* ============================ sections ============================ */
section{scroll-margin-top:84px}
.sec{padding:clamp(60px,8vw,104px) 0}
.sec--mist{background:var(--mist)}
.sec-head{max-width:62ch;margin-bottom:48px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* notice / problem section */
.notice{background:linear-gradient(180deg,#fff, var(--mist))}
.notice-grid{display:grid;grid-template-columns:1fr;gap:34px;align-items:center}
.notice-list{display:grid;gap:14px;margin-top:8px}
.notice-list li{display:flex;gap:13px;align-items:flex-start;font-size:1.02rem}
.notice-list svg{width:24px;height:24px;color:var(--teal);flex:none;margin-top:2px}
.notice-panel{background:var(--ink);color:#fff;border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.notice-panel h3{color:#fff;margin-bottom:10px}
.notice-panel p{color:#C7D6E6;font-size:.98rem}
.notice-panel .deadline{display:flex;align-items:center;gap:14px;background:rgba(212,154,53,.14);border:1px solid rgba(212,154,53,.4);border-radius:12px;padding:14px 16px;margin:18px 0}
.notice-panel .deadline svg{width:30px;height:30px;color:var(--brass);flex:none}
.notice-panel .deadline b{font-family:var(--font-display);display:block;font-size:1.02rem}
.notice-panel .deadline span{font-size:.85rem;color:#C7D6E6}

/* services */
.cards{display:grid;grid-template-columns:1fr;gap:18px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--mist-2)}
.card .ico{width:54px;height:54px;border-radius:14px;background:var(--mist);color:var(--teal-deep);display:grid;place-items:center;margin-bottom:18px}
.card .ico svg{width:28px;height:28px}
.card h3{margin-bottom:8px}
.card p{color:var(--slate);font-size:.97rem;margin-bottom:14px}
.card .tags{display:flex;flex-wrap:wrap;gap:6px}
.card .tags span{font-size:.72rem;font-weight:700;letter-spacing:.04em;background:var(--mist);color:var(--harbor);padding:.35em .7em;border-radius:7px}

/* steps */
.steps{display:grid;grid-template-columns:1fr;gap:18px;counter-reset:step}
.step{position:relative;padding:30px;background:var(--paper);border-radius:var(--radius);border:1px solid var(--line)}
.step .n{font-family:var(--font-display);font-weight:800;font-size:1.05rem;width:42px;height:42px;border-radius:11px;
  background:var(--ink);color:#fff;display:grid;place-items:center;margin-bottom:16px}
.step h3{margin-bottom:7px}
.step p{color:var(--slate);font-size:.96rem;margin:0}

/* why / value props split */
.split{display:grid;grid-template-columns:1fr;gap:34px;align-items:center}
.feat-list{display:grid;gap:22px}
.feat{display:flex;gap:16px;align-items:flex-start}
.feat .ico{width:46px;height:46px;border-radius:12px;flex:none;background:var(--brass-soft);color:var(--brass-deep);display:grid;place-items:center}
.feat .ico svg{width:24px;height:24px}
.feat h3{margin-bottom:4px;font-size:1.12rem}
.feat p{margin:0;color:var(--slate);font-size:.96rem}

/* service area */
.area-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin-top:8px}
.area-link{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:15px 18px;background:var(--paper);
  border:1px solid var(--line);border-radius:12px;font-weight:600;transition:.18s var(--ease)}
.area-link:hover{border-color:var(--teal);color:var(--teal-deep);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.area-link svg{width:18px;height:18px;color:var(--brass);transition:transform .18s}
.area-link:hover svg{transform:translateX(3px)}

/* FAQ */
.faq{max-width:820px;margin:0 auto;display:grid;gap:12px}
.qa{background:var(--paper);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.qa summary{list-style:none;cursor:pointer;padding:20px 24px;font-family:var(--font-display);font-weight:700;font-size:1.07rem;
  display:flex;justify-content:space-between;align-items:center;gap:16px;color:var(--ink)}
.qa summary::-webkit-details-marker{display:none}
.qa summary .pm{width:26px;height:26px;flex:none;position:relative}
.qa summary .pm::before,.qa summary .pm::after{content:"";position:absolute;background:var(--teal);border-radius:2px;transition:.2s}
.qa summary .pm::before{top:12px;left:4px;right:4px;height:2.5px}
.qa summary .pm::after{left:12px;top:4px;bottom:4px;width:2.5px}
.qa[open] summary .pm::after{transform:scaleY(0)}
.qa .a{padding:0 24px 22px;color:var(--slate);font-size:1rem}
.qa .a p{margin:0}

/* reviews */
.reviews{display:grid;grid-template-columns:1fr;gap:18px}
.review{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.stars{display:flex;gap:2px;margin-bottom:12px;color:var(--brass)}
.stars svg{width:18px;height:18px}
.review p{font-size:1rem;color:var(--ink);margin-bottom:16px}
.review .who{display:flex;align-items:center;gap:11px}
.review .av{width:40px;height:40px;border-radius:50%;background:var(--harbor);color:#fff;display:grid;place-items:center;font-family:var(--font-display);font-weight:800;font-size:1rem}
.review .who b{display:block;font-size:.92rem}
.review .who span{font-size:.8rem;color:var(--slate-2)}

/* CTA band + form */
.ctaband{background:radial-gradient(120% 140% at 80% 0%,#16406F,var(--ink));color:#fff}
.ctaband .wrap{display:grid;grid-template-columns:1fr;gap:34px;align-items:center;padding:clamp(48px,9vw,90px) 20px}
.ctaband h2{color:#fff}
.ctaband .lead{color:#C7D6E6}
.qform{background:var(--paper);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-lg);color:var(--ink)}
.qform h3{margin-bottom:4px}
.qform .sub{font-size:.9rem;color:var(--slate);margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:.82rem;font-weight:700;color:var(--harbor);margin-bottom:6px;letter-spacing:.01em}
.field input,.field select,.field textarea{width:100%;font-family:inherit;font-size:1rem;padding:.78em .9em;border:1.5px solid var(--line);
  border-radius:11px;background:var(--mist);color:var(--ink);transition:border-color .15s,background .15s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal);background:#fff}
.qform .btn{width:100%}
.qform .fineprint{font-size:.78rem;color:var(--slate-2);text-align:center;margin:12px 0 0}
.formrow{display:grid;grid-template-columns:1fr;gap:12px}

/* ============================ footer ============================ */
.site-footer{background:var(--ink);color:#C7D6E6;padding:64px 0 30px}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
.foot-brand .brand{color:#fff;margin-bottom:14px}
.foot-brand p{font-size:.92rem;color:#9FB6CC;max-width:34ch}
.foot-col h4{color:#fff;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:16px;font-family:var(--font-body);font-weight:800}
.foot-col a,.foot-col li{display:block;font-size:.93rem;color:#9FB6CC;padding:5px 0;transition:color .15s}
.foot-col a:hover{color:#fff}
.foot-contact a{display:flex;gap:10px;align-items:center;font-weight:600;color:#fff;font-size:1.02rem;padding:7px 0}
.foot-contact svg{width:18px;height:18px;color:var(--brass);flex:none}
.foot-bottom{border-top:1px solid var(--ink-line);margin-top:44px;padding-top:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.83rem;color:#7E97AE}
.foot-bottom a{color:#9FB6CC}

/* sticky mobile call bar — shown by default (mobile-first) */
body{padding-bottom:64px}
.callbar{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:60;gap:0;
  box-shadow:0 -4px 20px rgba(11,37,69,.15)}
.callbar a{flex:1;display:flex;align-items:center;justify-content:center;gap:.5em;padding:16px;font-weight:800;font-family:var(--font-display);font-size:1.04rem;white-space:nowrap}
.callbar .c-call{background:var(--brass);color:#3a2a07}
.callbar .c-quote{background:var(--ink);color:#fff}
.callbar svg{width:20px;height:20px}

/* mobile nav dropdown (toggled open) */
.nav.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:#fff;
  border-bottom:1px solid var(--line);padding:12px 24px;box-shadow:var(--shadow)}
.nav.open a{padding:.8em 0;border-bottom:1px solid var(--mist)}

/* ============================ responsive scale-ups (mobile-first) ============================ */
@media(min-width:560px){
  .cards,.steps,.reviews{grid-template-columns:1fr 1fr;gap:22px}
  .formrow{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media(min-width:760px){
  .nav{display:flex}
  .header-phone{display:flex}
  .nav-toggle{display:none}
  .callbar{display:none}
  body{padding-bottom:0}
  .brand{font-size:1.18rem;gap:11px}
  .trust .wrap{grid-template-columns:repeat(4,1fr);gap:22px;padding:26px 24px}
  .notice-grid{grid-template-columns:1fr 1fr;gap:48px}
  .split{grid-template-columns:.9fr 1.1fr;gap:54px}
  .ctaband .wrap{grid-template-columns:1fr .85fr;gap:54px;padding:clamp(56px,7vw,90px) 24px}
}
@media(min-width:980px){
  .cards,.steps,.reviews{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* reveal-on-scroll — only hidden when JS is present, so no-JS users & crawlers see everything */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal.in{opacity:1;transform:none}