/* HydroVolt Water — field-equipment spec-sheet look:
   condensed industrial headings, equipment "data plates" for key numbers,
   a dated deployment record on the home page. */
:root {
  --bg: #f2f5f6;          /* cool, water-tinted paper */
  --surface: #ffffff;
  --band: #e4ecef;
  --fg: #0f2231;          /* deep navy ink */
  --muted: #546874;
  --line: #c9d5db;
  --link: #0a637d;        /* water teal */
  --signal: #f2a900;      /* hi-vis equipment yellow, fills only */
  --on-signal: #0f2231;
  --plate: #0f2231;
  --on-plate: #e8eff2;
  --plate-muted: #9fb3bf;

  --f-display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", sans-serif;
  --f-body: "IBM Plex Sans", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --f-data: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --step--1: 0.84rem;
  --step-0: 1rem;
  --step-1: 1.2rem;
  --step-2: 1.6rem;
  --step-3: 2.2rem;
  --step-4: clamp(2.4rem, 5vw, 3.6rem);

  --gutter: 16px;
  --maxw: 1180px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1720; --surface: #112231; --band: #0f1e2a; --fg: #e3ebef; --muted: #93a7b3;
    --line: #23394a; --link: #5fbcd8; --signal: #f5b92e; --on-signal: #0b1720;
    --plate: #18303f; --on-plate: #e8eff2; --plate-muted: #9fb3bf; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b1720; --surface: #112231; --band: #0f1e2a; --fg: #e3ebef; --muted: #93a7b3;
  --line: #23394a; --link: #5fbcd8; --signal: #f5b92e; --on-signal: #0b1720;
  --plate: #18303f; --on-plate: #e8eff2; --plate-muted: #9fb3bf; color-scheme: dark;
}

*, *::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; } }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 400 var(--step-0)/1.6 var(--f-body);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--f-display); font-weight: 700; line-height: 1.05; text-wrap: balance; margin: 0 0 .5em; letter-spacing: .005em; }
h1 { font-size: var(--step-4); text-transform: uppercase; }
h2 { font-size: var(--step-3); text-transform: uppercase; }
h3 { font-size: var(--step-1); font-weight: 600; letter-spacing: .02em; }
p { margin: 0 0 1em; }
sup { font-size: .5em; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 0; background: var(--signal); color: var(--on-signal); padding: 8px 12px; z-index: 50; }
.skip:focus { left: 8px; }

.wrap {
  max-width: var(--maxw); margin-inline: auto;
  padding-left: max(var(--gutter), env(safe-area-inset-left, 0px));
  padding-right: max(var(--gutter), env(safe-area-inset-right, 0px));
}
.section { padding-block: clamp(40px, 6vw, 72px); }
.band { background: var(--band); }
.eyebrow { font: 600 var(--step--1)/1.2 var(--f-data); text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin-bottom: .8em; }
.eyebrow a { color: inherit; }
.lede { font-size: var(--step-1); color: var(--muted); max-width: 62ch; }
.prose { max-width: 66ch; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.4em; }

.btn {
  display: inline-flex; align-items: center; gap: .4em; min-height: 44px;
  padding: 10px 18px; border: 2px solid var(--signal); background: var(--signal); color: var(--on-signal);
  font: 600 var(--step-0)/1.2 var(--f-display); text-transform: uppercase; letter-spacing: .06em;
  text-decoration: none; cursor: pointer; border-radius: 2px;
}
.btn:hover { filter: brightness(1.06); }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--fg); }
.link-out { font-weight: 600; }
.links { display: flex; flex-wrap: wrap; gap: 8px 20px; }

/* header */
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: var(--surface); border-bottom: 1px solid var(--line); }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 21; background: var(--surface); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand img { width: 204px; height: auto; }
:root[data-theme="dark"] .brand img { background: #fff; padding: 4px 8px; border-radius: 2px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .brand img { background: #fff; padding: 4px 8px; border-radius: 2px; } }
.site-nav ul { list-style: none; margin: 0; padding: 0; }
.site-nav > ul { display: flex; gap: 4px; }
.site-nav > ul > li { position: relative; }
.site-nav a { display: block; padding: 10px 12px; color: var(--fg); text-decoration: none; font: 600 1.05rem/1.2 var(--f-display); text-transform: uppercase; letter-spacing: .07em; }
.site-nav > ul > li.is-active > a { box-shadow: inset 0 -3px 0 var(--signal); }
.site-nav a[aria-current="page"] { color: var(--link); }
.subnav { position: absolute; left: 0; top: 100%; min-width: 170px; background: var(--surface); border: 1px solid var(--line); padding: 6px 0 !important; display: none; }
.site-nav li:hover > .subnav, .site-nav li:focus-within > .subnav { display: block; }
.subnav a { font-size: .98rem; }
.menu-btn { display: none; }
@media (max-width: 760px) {
  .menu-btn { display: inline-flex; min-height: 44px; padding: 8px 14px; background: transparent; color: var(--fg); border: 2px solid var(--fg); font: 600 1rem/1 var(--f-display); text-transform: uppercase; letter-spacing: .08em; border-radius: 2px; }
  .brand img { width: 160px; }
  .header-row { flex-wrap: wrap; }
  .site-nav { display: none; width: 100%; padding-bottom: 12px; }
  .site-nav.open { display: block; }
  .site-nav > ul { flex-direction: column; }
  .subnav { position: static; display: block; border: 0; padding: 0 0 0 16px !important; background: none; }
  .site-nav > ul > li.is-active > a { box-shadow: inset 3px 0 0 var(--signal); }
}

/* commissioned header artwork, shown on every page as on the Wix site */
.banner { background: var(--band); line-height: 0; }
.banner img { width: 100%; height: clamp(110px, 18vw, 260px); object-fit: cover; }

/* hero */
.hero { background: var(--surface); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(24px, 4vw, 56px); align-items: center; padding-block: clamp(36px, 6vw, 72px); }
.hero-copy { min-width: 0; }
.hero h1 { font-size: clamp(2.2rem, 4vw, 3.2rem); }
.hero-fig { margin: 0; }
.hero-fig img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 2px; }

.feature-grid { display: grid; grid-template-columns: 260px 1fr; gap: clamp(24px, 4vw, 48px); align-items: center; padding-block: clamp(36px, 5vw, 56px); }
.feature-grid > div { min-width: 0; max-width: 62ch; }
.feature-img { width: 100%; max-width: 260px; background: var(--surface); border-radius: 2px; padding: 10px; }

.section-head { margin-bottom: 28px; }

/* timeline */
.timeline { display: grid; gap: 0; }
.tl-item { display: grid; grid-template-columns: 120px 1fr; gap: clamp(16px, 3vw, 36px); padding-block: 32px; border-top: 1px solid var(--line); }
.tl-year { font: 700 2.6rem/1 var(--f-display); color: var(--fg); position: sticky; top: 88px; align-self: start; font-variant-numeric: tabular-nums; }
.tl-year::after { content: ""; display: block; width: 36px; height: 4px; background: var(--signal); margin-top: 10px; }
.tl-body { min-width: 0; }
.tl-body h3 { font-size: var(--step-2); text-transform: uppercase; }

/* galleries */
.gallery { display: grid; gap: 12px; margin: 20px 0; }
.gallery figure { margin: 0; min-width: 0; }
.gallery figcaption { font: var(--step--1)/1.35 var(--f-body); color: var(--muted); margin-top: 6px; }
.zoom { display: block; width: 100%; padding: 0; border: 0; background: var(--band); cursor: zoom-in; border-radius: 2px; overflow: hidden; }
.zoom img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .25s ease; }
.zoom:hover img { transform: scale(1.03); }
.strip { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.grid3 { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.grid2 { grid-template-columns: repeat(2, minmax(0, 1fr)); align-self: start; }
.grid1, .one { grid-template-columns: minmax(0, 1fr); align-self: start; }
.one .zoom img { aspect-ratio: 3 / 4; }

.lightbox { border: 0; padding: 0; background: transparent; max-width: min(1100px, 94vw); max-height: 92vh; }
.lightbox::backdrop { background: rgba(5, 14, 20, .88); }
.lightbox figure { margin: 0; }
.lightbox img { max-height: 82vh; width: auto; margin-inline: auto; }
.lightbox figcaption { color: #e8eff2; text-align: center; padding: 10px; font-size: .95rem; }
.lb-close { position: absolute; top: 8px; right: 8px; min-height: 40px; padding: 6px 14px; background: #f2a900; color: #0f2231; border: 0; font: 600 1rem/1 "Barlow Condensed", sans-serif; text-transform: uppercase; letter-spacing: .08em; cursor: pointer; border-radius: 2px; }

/* layouts */
.two-col { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.page-head { padding-bottom: 8px; }
.note { background: var(--surface); border: 1px solid var(--line); padding: 22px; border-radius: 2px; }
.partners { font: 700 var(--step-2)/1.1 var(--f-display); text-transform: uppercase; }

/* products */
.model-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.model-card { display: grid; gap: 10px; align-content: start; padding: 22px; background: var(--surface); border: 1px solid var(--line); color: var(--fg); text-decoration: none; border-radius: 2px; }
.model-card:hover { border-color: var(--fg); }
.mc-tag { font: 600 var(--step-1)/1.2 var(--f-display); text-transform: uppercase; }
.mc-blurb { color: var(--muted); }
.mc-spec { font: 500 var(--step--1)/1.4 var(--f-data); }
.mc-spec span { color: var(--muted); }
.mc-go { color: var(--link); font-weight: 600; }
.plate-code { display: inline-block; justify-self: start; font: 700 1.5rem/1 var(--f-display); letter-spacing: .14em; background: var(--signal); color: var(--on-signal); padding: 6px 10px 5px; border-radius: 2px; }

.product-top { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.product-fig { margin: 0; background: var(--surface); padding: 16px; border-radius: 2px; }

.plate { background: var(--plate); color: var(--on-plate); padding: 20px 22px; border-radius: 3px; margin: 8px 0 12px; }
.plate dl { margin: 14px 0 0; display: grid; gap: 0; }
.plate-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: baseline; gap: 12px; padding: 9px 0; border-top: 1px solid rgba(232, 239, 242, .16); }
.plate dt { font: 500 var(--step--1)/1.4 var(--f-data); text-transform: uppercase; letter-spacing: .08em; color: var(--plate-muted); }
.plate dd { margin: 0; font: 500 var(--step-0)/1.4 var(--f-data); text-align: right; font-variant-numeric: tabular-nums; }
.cap-note { font-size: var(--step--1); color: var(--muted); }

.spec-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px 32px; margin-top: 20px; }
.spec h3 { font-size: var(--step--1); font-family: var(--f-data); font-weight: 500; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); border-bottom: 2px solid var(--fg); padding-bottom: 6px; }
.spec ul { list-style: none; margin: 0; padding: 0; }
.spec li { padding: 6px 0; border-bottom: 1px solid var(--line); font-size: .95rem; }

.modes { list-style: none; counter-reset: m; margin: 0; padding: 0; display: grid; gap: 18px; }
.modes li { counter-increment: m; display: grid; grid-template-columns: 40px 1fr; column-gap: 12px; }
.modes li::before { content: counter(m); grid-row: span 2; font: 700 1.6rem/1 var(--f-display); width: 36px; height: 36px; display: grid; place-items: center; border: 2px solid var(--fg); border-radius: 50%; }
.modes h3 { margin: 4px 0 4px; text-transform: uppercase; }
.modes p { color: var(--muted); }

.stages { list-style: none; margin: 0; padding: 0; }
.stages li { display: grid; grid-template-columns: 110px 1fr; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.st-n { font: 500 var(--step--1)/1.6 var(--f-data); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }

.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; max-width: 80ch; }
.checks.cols { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); max-width: none; gap: 8px 24px; }
.checks li { padding-left: 22px; position: relative; }
.checks li::before { content: ""; position: absolute; left: 0; top: .55em; width: 10px; height: 10px; background: var(--signal); }

/* media */
.press-list { display: grid; gap: 0; }
.press { display: grid; grid-template-columns: 240px 1fr; gap: clamp(16px, 3vw, 32px); padding-block: 26px; border-top: 1px solid var(--line); }
.press-img img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 2px; background: var(--band); }
.press-body { min-width: 0; max-width: 70ch; }
.press h2 { font-size: var(--step-2); text-transform: none; font-weight: 600; }
.press-meta { font: 500 var(--step--1)/1.4 var(--f-data); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }

/* footer */
.site-footer { background: var(--plate); color: var(--on-plate); margin-top: 0; }
.site-footer a { color: var(--on-plate); }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 64px); padding-block: 48px; }
.f-col { min-width: 0; }
.f-h { font-size: var(--step-2); color: var(--on-plate); }
.f-h-sm { font-size: var(--step-1); margin-top: 24px; }
.site-footer address { font-style: normal; margin-bottom: 14px; }
.f-list, .f-social { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.f-social { display: flex; gap: 18px; flex-wrap: wrap; }
.k { display: inline-block; min-width: 72px; font: 500 var(--step--1)/1.6 var(--f-data); text-transform: uppercase; letter-spacing: .08em; color: var(--plate-muted); }
.contact-form { display: grid; gap: 14px; max-width: 520px; }
.field { display: grid; gap: 4px; }
.field label { font: 500 var(--step--1)/1.4 var(--f-data); text-transform: uppercase; letter-spacing: .08em; color: var(--plate-muted); }
.field input, .field textarea { width: 100%; font: inherit; color: var(--fg); background: var(--surface); border: 1px solid var(--line); border-radius: 2px; padding: 10px 12px; }
.contact-form .btn { justify-self: start; }
.form-note { font-size: var(--step--1); color: var(--plate-muted); margin: 0; }
.legal { padding-block: 16px 24px; border-top: 1px solid rgba(232, 239, 242, .16); font-size: var(--step--1); color: var(--plate-muted); }

@media (max-width: 860px) {
  .hero-grid, .two-col, .product-top, .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .feature-grid { grid-template-columns: minmax(0, 1fr); }
  .feature-img { max-width: 200px; }
}
@media (max-width: 600px) {
  .tl-item { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .tl-year { position: static; font-size: 2rem; }
  .press { grid-template-columns: minmax(0, 1fr); }
  .stages li { grid-template-columns: 84px 1fr; }
  .grid2 { grid-template-columns: minmax(0, 1fr); }
}