/* EcoWash Supply — shared stylesheet. Mobile-first, no framework, no build step. */
:root{
  /* Brand color system (2026-10-21). ONE source of truth: --brand, sampled from the EcoWash Supply logo
     ("WASH" lettering, PIL k-means median #0e6528 = HSL 138deg 76% 23%). Every other green below is the SAME hue
     (138deg) at a different lightness, so the site reads as one green. Shades keep the logo saturation (76%);
     the two light tints use 45% saturation so backgrounds/text-on-dark read as soft green, not neon mint.
     WCAG: white on --brand 7.21:1, --brand text on white 7.21:1 (AA, and AAA for large text), so the logo green
     itself is used for buttons and links; no extra "text-safe" shade was needed. */
  --brand:#0e6528;          /* logo green: buttons, links, eyebrows, accents, borders */
  --brand-strong:#09431b;   /* L15%: hover states, headings (11.47:1 on white) */
  --brand-deep:#062d12;     /* L10%: hero, dark sections, page heroes (white 15.09:1) */
  --brand-deepest:#041f0c;  /* L7%: footer */
  --brand-bright:#1cca50;   /* L45%: decorative accents on dark only (fails AA as text on white: 2.2:1) */
  --brand-tint:#e9f7ed;     /* L94% S45%: chips, callouts, near-white text on dark */
  --brand-pale:#c4e9cf;     /* L84% S45%: eyebrows, links and secondary text on dark */
  --ink:#1b1f1d; --ink-2:#434b46; --line:#d6ddd8; --paper:#ffffff; --paper-2:#f5f7f4;
  --amber-bg:#fff4cc; --amber-ink:#5c4400; /* amber highlight for :target reference rows */
  --radius:10px; --max:1180px; --gap:clamp(1rem,3vw,2rem);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;font-family:var(--font);font-size:1.0625rem;line-height:1.6;color:var(--ink);background:var(--paper)}
img,svg{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{line-height:1.15;margin:0 0 .6em;color:var(--brand-strong);letter-spacing:-.01em}
h1{font-size:clamp(2.1rem,6vw,3.6rem);font-weight:800}
h2{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:800}
h3{font-size:1.25rem;font-weight:700}
p{margin:0 0 1em}
a{color:var(--brand);text-underline-offset:.18em}
a:hover{color:var(--brand-strong)}
:focus-visible{outline:3px solid #0b57d0;outline-offset:3px;border-radius:3px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-deep);color:#fff;padding:.75rem 1rem;z-index:100;font-weight:700}
.skip-link:focus{left:1rem;top:1rem;color:#fff}
.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}
.container{width:min(100% - 2*var(--gap),var(--max));margin-inline:auto}
.section{padding-block:clamp(3rem,8vw,6rem)}
.section--tint{background:var(--paper-2)}
.section--dark{background:var(--brand-deep);color:var(--brand-tint)}
.section--dark h2,.section--dark h3{color:#fff}
.section--dark a{color:var(--brand-pale)}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--brand);margin-bottom:.75rem}
.section--dark .eyebrow{color:var(--brand-pale)}
.lede{font-size:clamp(1.1rem,2.2vw,1.3rem);color:var(--ink-2);max-width:62ch}
.section--dark .lede{color:var(--brand-tint)}
.section-head{max-width:760px;margin-bottom:2.5rem}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:48px;padding:.8rem 1.4rem;border-radius:999px;font-weight:800;font-size:1rem;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:background .15s,color .15s,border-color .15s}
.btn--primary{background:var(--brand);color:#fff}
.btn--primary:hover{background:var(--brand-strong);color:#fff}
.btn--ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn--ghost:hover{background:var(--brand);color:#fff}
.btn--light{background:#fff;color:var(--brand-strong)}
.btn--light:hover{background:var(--brand-tint);color:var(--brand-strong)}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.5rem}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-top:4px solid var(--brand);border-bottom:1px solid var(--line)}
.site-header__bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:68px}
.brand{display:flex;align-items:center;gap:.55rem;text-decoration:none;color:var(--brand-strong);font-weight:800;font-size:1.15rem;letter-spacing:-.01em}
.brand__logo{display:block;height:48px;width:auto} /* real EcoWash Supply logo PNG (tagline cropped off for header size) */
@media (max-width:420px){.brand__logo{height:40px}}
.nav-toggle{display:none;align-items:center;gap:.4rem;min-height:44px;padding:.5rem .9rem;border:2px solid var(--brand);border-radius:8px;background:#fff;color:var(--brand-strong);font:inherit;font-weight:700;cursor:pointer}
.js .nav-toggle{display:inline-flex}
.site-nav ul{list-style:none;margin:0;padding:0}
.site-nav a{display:block;padding:.75rem 0;text-decoration:none;color:var(--ink);font-weight:700}
.site-nav a[aria-current="page"]{color:var(--brand);text-decoration:underline;text-decoration-thickness:3px;text-underline-offset:.4em}
.site-nav .btn{color:#fff;padding:.6rem 1.1rem;margin-top:.5rem}
.js .site-nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);padding:0 var(--gap) 1rem}
.js .site-nav.is-open{display:block}
@media (min-width:960px){
  .js .nav-toggle{display:none}
  .js .site-nav,.site-nav{display:block;position:static;padding:0;border:0}
  .site-nav ul{display:flex;align-items:center;gap:1.4rem}
  .site-nav a{padding:.5rem 0}
  .site-nav .btn{margin:0}
  .site-nav a{white-space:nowrap}
}
/* 7 nav items since Breweries was added (2026-10-21): tighten spacing on narrow desktops so labels never wrap */
/* 8 nav items since Stadiums and Arenas was added (2026-10-21, t39): keep the logo from shrinking and step the spacing down on narrower desktops */
.brand{flex-shrink:0}
@media (min-width:960px) and (max-width:1239px){.site-nav ul{gap:1rem}.site-nav a{font-size:.95rem}.site-nav .btn{padding:.55rem .9rem}}
@media (min-width:960px) and (max-width:1099px){.site-nav ul{gap:.62rem}.site-nav a{font-size:.88rem}.site-nav .btn{padding:.5rem .7rem}.site-header__bar{gap:.6rem}}

/* Hero */
.hero{position:relative;background:var(--brand-deep);color:#fff;overflow:hidden}
.hero__media{position:absolute;inset:0}
.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,45,18,.94) 0%,rgba(6,45,18,.86) 55%,rgba(6,45,18,.6) 100%);background:linear-gradient(90deg,color-mix(in srgb,var(--brand-deep) 94%,transparent) 0%,color-mix(in srgb,var(--brand-deep) 86%,transparent) 55%,color-mix(in srgb,var(--brand-deep) 60%,transparent) 100%)} /* rgba() line = fallback for browsers without color-mix; same value as --brand-deep */
.hero__inner{position:relative;padding-block:clamp(4rem,12vw,8rem);max-width:820px}
.hero h1{color:#fff}
.hero .lede{color:var(--brand-tint)}
.hero .eyebrow{color:var(--brand-pale)}
.hero__proof{margin-top:1.75rem;font-weight:700;color:#fff;border-left:4px solid var(--brand-bright);padding-left:1rem}

/* Grids & cards */
.grid{display:grid;gap:var(--gap)}
@media (min-width:640px){.grid--2{grid-template-columns:repeat(2,1fr)}.grid--3{grid-template-columns:repeat(2,1fr)}.grid--4{grid-template-columns:repeat(2,1fr)}}
@media (min-width:960px){.grid--3{grid-template-columns:repeat(3,1fr)}.grid--4{grid-template-columns:repeat(4,1fr)}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;display:flex;flex-direction:column}
.card h3{margin-bottom:.4rem}
.card p:last-child{margin-bottom:0}
.card__media{margin:-1.5rem -1.5rem 1.25rem;border-radius:var(--radius) var(--radius) 0 0;overflow:hidden;background:var(--paper-2)}
.card__media img{width:100%;aspect-ratio:3/2;object-fit:cover}
.card ul{margin:.25rem 0 1rem;padding-left:1.2rem}
.card .card__link{margin-top:auto;font-weight:800}

/* Mechanism steps */
.steps{counter-reset:step;list-style:none;margin:0;padding:0;display:grid;gap:var(--gap)}
@media (min-width:760px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1100px){.steps{grid-template-columns:repeat(4,1fr)}}
.steps li{counter-increment:step;background:#fff;border:1px solid var(--line);border-top:6px solid var(--brand);border-radius:var(--radius);padding:1.5rem}
.steps li::before{content:"Step " counter(step);display:block;font-size:.8rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--brand);margin-bottom:.5rem}
.diagram{margin:2.5rem 0 0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1rem}
.diagram figcaption{font-size:.92rem;color:var(--ink-2);padding:.75rem .25rem 0}

/* Use-case chips */
.chips{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;padding:0;margin:0 0 1rem}
.chips li{background:var(--brand-tint);color:var(--brand-strong);font-weight:700;font-size:.88rem;padding:.35rem .75rem;border-radius:999px}

/* Products */
.product-card{text-align:left}
.product-card .card__media{background:#fff;border-bottom:1px solid var(--line)}
.product-card .card__media img{aspect-ratio:1/1;object-fit:contain;padding:1rem}
.price{font-size:1.4rem;font-weight:800;color:var(--ink);margin:.25rem 0 .25rem}
.price small{font-size:.85rem;font-weight:600;color:var(--ink-2)}
.meta{font-size:.92rem;color:var(--ink-2)}

/* Spec table & proof */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{border-collapse:collapse;width:100%;min-width:520px;font-size:.98rem}
caption{text-align:left;font-weight:800;padding:1rem;color:var(--brand-strong)}
th,td{text-align:left;padding:.75rem 1rem;border-top:1px solid var(--line);vertical-align:top}
thead th{background:var(--paper-2);font-size:.85rem;text-transform:uppercase;letter-spacing:.06em}
.proof-list{list-style:none;padding:0;margin:0;display:grid;gap:1rem}
@media (min-width:760px){.proof-list{grid-template-columns:repeat(2,1fr)}}
.proof-list li{background:#fff;border:1px solid var(--line);border-left:6px solid var(--brand);border-radius:var(--radius);padding:1.1rem 1.25rem}
.proof-list strong{display:block;color:var(--brand-strong);font-size:1.05rem}
.proof-logo{float:right;width:64px;height:64px;margin:0 0 .5rem 1rem}
.section--dark .proof-list li{background:var(--brand-strong);border-color:var(--brand);border-left-color:var(--brand-bright);color:var(--brand-tint)}
.section--dark .proof-list strong{color:#fff}
.callout{background:var(--brand-tint);border-radius:var(--radius);padding:1.25rem 1.5rem;border-left:6px solid var(--brand)}
.callout--warn{background:#fff7e0;border-left-color:#8a6500}
.split{display:grid;gap:var(--gap);align-items:center}
@media (min-width:900px){.split{grid-template-columns:1.1fr .9fr}.split--rev{grid-template-columns:.9fr 1.1fr}}
.split img{border-radius:var(--radius)}

/* CTA band */
.cta-band{background:var(--brand);color:#fff;border-radius:16px;padding:clamp(2rem,5vw,3.5rem);display:grid;gap:1rem}
.cta-band h2{color:#fff;margin:0}
.cta-band p{color:var(--brand-tint);margin:0;max-width:60ch}


/* Footer */
.site-footer{background:var(--brand-deepest);color:var(--brand-tint);padding-block:3rem 2rem;font-size:.95rem}
.site-footer a{color:var(--brand-tint);text-decoration:none}
.site-footer a:hover{text-decoration:underline;color:#fff}
.site-footer h2{font-size:.85rem;letter-spacing:.12em;text-transform:uppercase;color:#fff;margin-bottom:.75rem}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:.35rem 0}
.footer-grid{display:grid;gap:2rem}
@media (min-width:760px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer-tagline{font-size:1.2rem;font-weight:800;color:#fff;margin-bottom:.5rem}
.footer-legal{border-top:1px solid var(--brand-strong);margin-top:2.5rem;padding-top:1.5rem;font-size:.85rem;color:var(--brand-pale)}
.footer-legal p{margin:.25rem 0}

/* Breadcrumb */
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem;padding:0;margin:0 0 1rem;font-size:.9rem;color:var(--brand-tint)}
.breadcrumb li+li::before{content:"/";margin-right:.4rem;opacity:.7}
.breadcrumb a{color:#fff}
.page-hero{background:var(--brand-deep);color:#fff;padding-block:clamp(3rem,8vw,5rem)}
.page-hero h1{color:#fff;max-width:20ch}
.page-hero .lede{color:var(--brand-tint)}
.page-hero .eyebrow{color:var(--brand-pale)}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin-bottom:.75rem}
.faq summary{cursor:pointer;padding:1rem 1.25rem;font-weight:800;color:var(--brand-strong);min-height:48px}
.faq details>div{padding:0 1.25rem 1.1rem}
.btn--on-dark{color:#fff;border-color:#fff}
.btn--on-dark:hover{background:#fff;color:var(--brand-strong)}
.section--dark .callout--warn{color:var(--ink)}
.section--dark .callout--warn a{color:var(--brand)}

/* ---------- Phase 2: product pages ---------- */
.product-top{display:grid;gap:var(--gap);padding-block:clamp(2rem,5vw,3.5rem)}
@media (min-width:900px){.product-top{grid-template-columns:1fr 1fr;align-items:start}}
.product-media{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1rem;margin:0}
.product-media img{width:100%;aspect-ratio:1/1;object-fit:contain}
.product-media figcaption{font-size:.85rem;color:var(--ink-2);padding-top:.5rem}
.buy-box h1{font-size:clamp(1.9rem,4.5vw,2.8rem)}
.buy-box .price{font-size:2rem}
.buy-box .breadcrumb ol{color:var(--ink-2)}
.buy-box .breadcrumb a{color:var(--brand)}
.key-facts{list-style:none;padding:0;margin:1rem 0;display:grid;gap:.4rem}
.key-facts li{padding-left:1.6rem;position:relative}
.key-facts li::before{content:"";position:absolute;left:0;top:.45em;width:.9rem;height:.9rem;border-radius:50%;background:var(--brand)}
.buy-actions{display:flex;flex-wrap:wrap;align-items:flex-end;gap:.75rem;margin-top:1.25rem}
.qty label{display:block;font-weight:700;font-size:.9rem;margin-bottom:.25rem}
.qty input{width:6rem;min-height:48px;padding:.5rem .75rem;border:2px solid var(--ink-2);border-radius:8px;font:inherit}
.buy-note{font-size:.88rem;color:var(--ink-2);margin-top:.75rem}
.prose{max-width:72ch}
.prose h2{margin-top:0}
.use-grid{display:grid;gap:var(--gap)}
@media (min-width:760px){.use-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1100px){.use-grid{grid-template-columns:repeat(3,1fr)}}
.use-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem}
.use-card h3{margin-bottom:.35rem}
.use-card .setting{display:inline-block;font-size:.82rem;font-weight:800;background:var(--brand-tint);color:var(--brand-strong);padding:.2rem .6rem;border-radius:999px;margin-bottom:.6rem}
.use-card ol{padding-left:1.2rem;margin:.5rem 0 0}
.use-card p:last-child{margin-bottom:0}
.related .card__media img{aspect-ratio:1/1;object-fit:contain;padding:1rem;background:#fff}

/* ---------- Phase 2: forms ---------- */
.contact-grid{display:grid;gap:clamp(2rem,5vw,3.5rem)}
@media (min-width:960px){.contact-grid{grid-template-columns:1.15fr .85fr}}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.25rem,4vw,2rem)}
.field{margin-bottom:1.15rem}
.field label{display:block;font-weight:700;margin-bottom:.3rem}
.field .hint{display:block;font-size:.88rem;color:var(--ink-2);margin-bottom:.35rem}
.field input,.field select,.field textarea{width:100%;min-height:48px;padding:.65rem .8rem;border:2px solid #6b746f;border-radius:8px;font:inherit;color:var(--ink);background:#fff}
.field textarea{min-height:9rem;resize:vertical}
.field input:focus-visible,.field select:focus-visible,.field textarea:focus-visible{border-color:#0b57d0}
.field [aria-invalid="true"]{border-color:#b3261e;background:#fff8f7}
.field .error{display:block;color:#b3261e;font-weight:700;font-size:.92rem;margin-top:.35rem}
.field .error:empty{display:none}
.req{color:#b3261e}
.error-summary{border:3px solid #b3261e;border-radius:var(--radius);padding:1rem 1.25rem;margin-bottom:1.25rem;background:#fff8f7}
.error-summary h2{font-size:1.1rem;color:#b3261e;margin-bottom:.4rem}
.error-summary ul{margin:0;padding-left:1.2rem}
.error-summary a{color:#b3261e;font-weight:700}
.hp{position:absolute!important;left:-10000px!important}
.field-row{display:grid;gap:0 1rem}
@media (min-width:640px){.field-row{grid-template-columns:1fr 1fr}}
.contact-list{list-style:none;padding:0;margin:0 0 1.5rem}
.contact-list li{padding:.6rem 0;border-bottom:1px solid var(--line)}
.contact-list strong{display:block;font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--brand)}
/* References / citations */
.refs{padding-left:1.4rem;font-size:.95rem;color:var(--ink-2)}
.refs li{margin-bottom:.6rem}
.refs li:target{background:var(--amber-bg)}
sup a{text-decoration:none;font-weight:700}

/* Hero background video (index). The <picture> still stays underneath as poster/fallback. */
.hero__video{display:none;position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.js .hero__video{display:block}
.js .hero__video.is-off{display:none}
@media (prefers-reduced-motion:reduce){.js .hero__video{display:none}}
.hero__video-toggle{position:absolute;right:1rem;bottom:2.75rem;z-index:2;min-height:44px;padding:.45rem .9rem;border:2px solid rgba(255,255,255,.75);border-radius:999px;background:rgba(0,0,0,.45);color:#fff;font:inherit;font-size:.85rem;font-weight:700;cursor:pointer}
.hero__video-toggle:hover{background:var(--brand-deep)}
@media (prefers-reduced-motion:reduce){.hero__video-toggle{display:none}}
@media (max-width:640px){.hero__video-toggle{bottom:.6rem;right:.75rem;font-size:.8rem;padding:.35rem .8rem}.hero__inner{padding-bottom:5rem}}

/* Micelle step visualization: one 3-panel image (numbers/labels rendered in), text legend below. Capped at 740px on desktop. */
.diagram--viz{max-width:740px;margin:2.5rem auto 0;padding:0;overflow:hidden;background:var(--brand-deepest);border-color:var(--brand-strong)}
.diagram--viz img{width:100%;height:auto}
.diagram--viz figcaption{margin:0;padding:1rem 1.15rem 1.15rem;background:#fff;color:var(--ink)}
.viz__key{margin:0;padding-left:1.4rem;display:grid;gap:.4rem}
.viz__key li::marker{font-weight:800;color:var(--brand)}
.viz__key strong{color:var(--brand-strong)}
.viz__note{margin:.75rem 0 0;font-size:.88rem;color:var(--ink-2)}

/* Homepage industries grid has 7 cards + the "Not sure" card since Stadiums and Arenas was added (2026-10-21, t39): 2-col = 8 cells, 3-col = 7 + span 2 = 9 cells */
.card--cta-fill{grid-column:1/-1}
@media (min-width:640px){.card--cta-fill{grid-column:auto}}
@media (min-width:960px){.card--cta-fill{grid-column:span 2}}