/* ============================================================================
   North American Coating Solutions - site stylesheet
   AppWT Web & AI Solutions, 2026-07-31

   Tony 2026-07-31: "colors changed from orange and white to blue and white".
   The old theme was orange (#F26522 family) on white. Everything below is one
   blue family plus generous white. Changing the palette later is one block of
   custom properties, not a search-and-replace across templates.

   HARD RULE - NEVER ALLOW HORIZONTAL SCROLL. html/body carry max-width:100% and
   overflow-x:hidden. Note that overflow-x:CLIP would blind a scrollWidth audit,
   so hidden is deliberate here; wide children (tables, the shop grid, code) get
   their own overflow-x:auto container instead of being allowed to push the page.
   ========================================================================== */

:root {
  --nacs-ink:        #0B2138;
  --nacs-primary:    #2C93FA;
  --nacs-primary-dk: #0B63C4;
  --nacs-accent:     #6FB4FC;
  --nacs-wash:       #F2F8FF;
  --nacs-line:       #D7E7FA;
  --nacs-body:       #3E5468;
  --nacs-white:      #FFFFFF;

  --nacs-radius:     10px;
  --nacs-radius-lg:  16px;
  --nacs-shadow:     0 1px 2px rgba(10,37,64,.06), 0 8px 24px rgba(10,37,64,.08);
  --nacs-shadow-lg:  0 2px 4px rgba(10,37,64,.06), 0 18px 48px rgba(10,37,64,.14);

  --nacs-maxw:       1180px;
  --nacs-gap:        clamp(1rem, 2.5vw, 2rem);

  --nacs-font:       system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --nacs-font-head:  "Segoe UI Semibold", system-ui, -apple-system, Roboto, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  max-width: 100%;
  overflow-x: hidden;          /* hard rule: no horizontal scroll, ever */
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  font-family: var(--nacs-font);
  font-size: clamp(1rem, .97rem + .15vw, 1.0625rem);
  line-height: 1.65;
  color: var(--nacs-body);
  background: var(--nacs-white);
  -webkit-font-smoothing: antialiased;
}

/* ------------------------------------------------------------ typography -- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--nacs-font-head);
  color: var(--nacs-ink);
  line-height: 1.2;
  margin: 0 0 .6em;
  font-weight: 700;
  letter-spacing: -.015em;
}
h1 { font-size: clamp(2rem, 1.5rem + 2.4vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 1.3rem + 1.4vw, 2.35rem); }
h3 { font-size: clamp(1.25rem, 1.1rem + .7vw, 1.6rem); }
h4 { font-size: 1.15rem; }
p  { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--nacs-primary); text-decoration: none; }
a:hover, a:focus-visible { color: var(--nacs-primary-dk); text-decoration: underline; }

/* Visible focus for keyboard users. Never remove this without a replacement. */
a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--nacs-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

img { max-width: 100%; height: auto; display: block; }

.nacs-lede { font-size: 1.15em; color: var(--nacs-body); }
.nacs-eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 700;
  letter-spacing: .09em; text-transform: uppercase;
  color: var(--nacs-primary); margin-bottom: .6rem;
}

/* Skip link - first focusable element on every page (WCAG 2.4.1) */
.nacs-skip {
  position: absolute; left: -9999px; top: 0; z-index: 10000;
  background: var(--nacs-ink); color: #fff; padding: .75rem 1.25rem;
  border-radius: 0 0 var(--nacs-radius) 0; font-weight: 600;
}
.nacs-skip:focus { left: 0; }

/* ---------------------------------------------------------------- layout -- */
.nacs-wrap { width: 100%; max-width: var(--nacs-maxw); margin-inline: auto; padding-inline: var(--nacs-gap); }
.nacs-section { padding-block: clamp(3rem, 6vw, 5.5rem); }
.nacs-section--wash { background: var(--nacs-wash); }
.nacs-section--ink  { background: var(--nacs-ink); color: #C9D8E8; }
.nacs-section--ink h2, .nacs-section--ink h3 { color: #fff; }

.nacs-grid { display: grid; gap: clamp(1.25rem, 2.5vw, 2rem); }
.nacs-grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }
.nacs-grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
.nacs-grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr)); }

.nacs-center { text-align: center; }
.nacs-section > .nacs-wrap > header { max-width: 46rem; margin-bottom: 2.5rem; }
.nacs-center > header, header.nacs-center { margin-inline: auto; }

/* --------------------------------------------------------------- buttons -- */
.nacs-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  padding: .85rem 1.6rem; border-radius: var(--nacs-radius);
  font-weight: 650; font-size: 1rem; line-height: 1.2;
  border: 2px solid transparent; cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
  text-decoration: none; min-height: 48px;   /* touch target */
}
.nacs-btn:hover { text-decoration: none; transform: translateY(-1px); }
.nacs-btn--primary { background: var(--nacs-primary); color: #fff; }
.nacs-btn--primary:hover, .nacs-btn--primary:focus-visible { background: var(--nacs-primary-dk); color: #fff; }
.nacs-btn--ghost { background: transparent; color: var(--nacs-primary); border-color: var(--nacs-line); }
.nacs-btn--ghost:hover { border-color: var(--nacs-primary); color: var(--nacs-primary-dk); }
.nacs-btn--light { background: #fff; color: var(--nacs-primary); }
.nacs-btn--light:hover { background: var(--nacs-wash); color: var(--nacs-primary-dk); }

/* ----------------------------------------------------------------- cards -- */
.nacs-card {
  background: #fff; border: 1px solid var(--nacs-line);
  border-radius: var(--nacs-radius-lg); padding: 1.6rem;
  box-shadow: var(--nacs-shadow);
  transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease;
  display: flex; flex-direction: column; gap: .6rem;
}
.nacs-card:hover { box-shadow: var(--nacs-shadow-lg); transform: translateY(-3px); border-color: var(--nacs-accent); }
.nacs-card h3 { margin-bottom: .25rem; }
.nacs-card p  { font-size: .96rem; }
.nacs-card__more { margin-top: auto; padding-top: .6rem; font-weight: 650; }
.nacs-card__icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--nacs-wash); color: var(--nacs-primary); margin-bottom: .4rem;
}
.nacs-card--link { color: inherit; }
.nacs-card--link:hover { text-decoration: none; }

/* ---------------------------------------------------------------- header -- */
.nacs-topbar {
  background: var(--nacs-ink); color: #C9D8E8; font-size: .875rem;
  padding-block: .5rem;
}
.nacs-topbar a { color: #fff; font-weight: 600; }
.nacs-topbar__row { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; align-items: center; justify-content: space-between; }
.nacs-openflag { display: inline-flex; align-items: center; gap: .4rem; }
.nacs-openflag::before { content: ""; width: .55rem; height: .55rem; border-radius: 50%; background: #63C68A; }
.nacs-openflag--shut::before { background: #E2A33C; }

.nacs-header { position: sticky; top: 0; z-index: 900; background: rgba(255,255,255,.97); backdrop-filter: blur(8px); border-bottom: 1px solid var(--nacs-line); }
.nacs-header__row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 76px; }
.nacs-logo { display: flex; align-items: center; flex: 0 0 auto; }
/* The wordmark carries the brand on its own, so give it real size. It was a 40px icon
   next to small text, which read as an afterthought. Height-driven so it stays crisp. */
.nacs-logo img { height: clamp(38px, 3.4vw, 54px); width: auto; display: block; }
@media (max-width: 480px) { .nacs-logo img { height: 34px; } }
.nacs-logo:hover { text-decoration: none; }


.nacs-nav ul { list-style: none; display: flex; gap: .25rem; margin: 0; padding: 0; align-items: center; }
.nacs-nav a { display: block; padding: .6rem .8rem; border-radius: 8px; font-weight: 600; color: var(--nacs-ink); font-size: .95rem; }
.nacs-nav a:hover, .nacs-nav a[aria-current="page"] { background: var(--nacs-wash); color: var(--nacs-primary); text-decoration: none; }

.nacs-has-sub { position: relative; }
.nacs-sub {
  position: absolute; top: calc(100% + .35rem); left: 0; min-width: 20rem;
  background: #fff; border: 1px solid var(--nacs-line); border-radius: var(--nacs-radius);
  box-shadow: var(--nacs-shadow-lg); padding: .5rem; display: none; flex-direction: column;
  max-height: 70vh; overflow-y: auto;
}
.nacs-has-sub:hover > .nacs-sub, .nacs-has-sub:focus-within > .nacs-sub { display: flex; }
.nacs-sub a { white-space: nowrap; font-weight: 500; }

/* ---------------------------------------------------------------- submenu caret ----
   Tony 2026-07-31: "nacs dropdown for areas needs an arrow to indicate submenu ...
   nobody is going to fucking know that".

   Two separate defects were behind that sentence:

   1. NO VISUAL AFFORDANCE. The markup carried aria-haspopup, so assistive tech was told
      a submenu existed and a sighted mouse user was told nothing at all. The caret is the
      visual half of a message that was already half-sent.

   2. THE PANEL COULD NOT BE LATCHED OPEN. The stylesheet opened it on :hover and
      :focus-within only, and the JS-injected rule was a force-CLOSE
      ([data-sub-open="false"]) with no force-OPEN counterpart. So a click set
      aria-expanded="true" while the panel's visibility stayed entirely at the mercy of
      the pointer - ARIA claiming open, mouse deciding otherwise. Moving diagonally toward
      the submenu clips the corner of the parent <li> and the menu vanishes mid-reach,
      which is precisely the "does not stay open" Tony hit.

   The [data-sub-open="true"] rule below is that missing counterpart: once clicked, the
   panel stays open until it is dismissed deliberately. */
.nacs-nav a { display: inline-flex; align-items: center; }
.nacs-caret {
  margin-left: .34rem; flex: none; opacity: .65;
  transition: transform .18s ease, opacity .18s ease;
}
/* The matching display rule lives in site.js injectStates(), desktop-scoped, because a
   latched-open panel is a state that cannot exist without JS - the same reason the
   force-close rule is injected rather than sitting here as a dead selector. */
.nacs-has-sub:hover > a > .nacs-caret,
.nacs-has-sub:focus-within > a > .nacs-caret,
.nacs-has-sub[data-sub-open="true"] > a > .nacs-caret { opacity: 1; transform: rotate(180deg); }
.nacs-has-sub[data-sub-open="false"] > a > .nacs-caret { transform: none; }

@media (prefers-reduced-motion: reduce) {
  .nacs-caret { transition: none; }
}

.nacs-burger { display: none; background: none; border: 0; padding: .6rem; cursor: pointer; color: var(--nacs-ink); }

@media (max-width: 1020px) {
  .nacs-burger { display: block; }
  .nacs-nav {
    position: fixed; inset: 76px 0 auto 0; background: #fff; border-bottom: 1px solid var(--nacs-line);
    max-height: calc(100dvh - 76px); overflow-y: auto; padding: 1rem var(--nacs-gap) 2rem;
    transform: translateY(-120%); transition: transform .25s ease; box-shadow: var(--nacs-shadow-lg);
  }
  .nacs-nav[data-open="true"] { transform: translateY(0); }
  .nacs-nav ul { flex-direction: column; align-items: stretch; gap: .1rem; }
  .nacs-nav a { padding: .8rem .6rem; }
  .nacs-sub { position: static; display: flex; box-shadow: none; border: 0; border-left: 2px solid var(--nacs-line); border-radius: 0; margin-left: .6rem; padding-left: .6rem; max-height: none; }
}

/* The header CTA hides EARLIER than the nav collapses, and the two breakpoints are
   deliberately different numbers.

   MEASURED 2026-07-31: with the CTA visible, the logo + nine nav items + the phone
   button overflow the viewport from 1021px up to about 1140px (confirmed overflowing
   at 1021, 1041, 1061, 1081, 1101 and 1121; clean from 1141). The nav itself only
   collapses to a burger at 1020px, so tying the CTA to that same number left a
   ~120px band where the phone button was cut off on a small laptop.

   WHY IT WAS INVISIBLE: html/body carry overflow-x:hidden, which CLIPS the overflow
   instead of scrolling it. There is no scrollbar, so a scrollWidth check reads clean
   while the button is genuinely chopped. Same shape as the canon lesson that
   overflow-x:clip blinds the scrollWidth test - the page must be measured with
   per-element rects, not a document-level width.

   The number is 1140 because that is where it measured clean, not a round guess. */
@media (max-width: 1140px) {
  .nacs-header__cta { display: none; }
}

/* ------------------------------------------------------------------ hero -- */
.nacs-hero {
  position: relative; color: #fff; isolation: isolate;
  background: linear-gradient(135deg, #0B2138 0%, #123B66 45%, #2C93FA 100%);
  padding-block: clamp(3.5rem, 8vw, 7rem);
}
.nacs-hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: .16;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath d='M0 30h60M30 0v60' stroke='%23fff' stroke-width='.5' fill='none'/%3E%3C/svg%3E");
}
.nacs-hero h1 { color: #fff; max-width: 18ch; }
.nacs-hero p  { color: #D3E2F2; max-width: 56ch; font-size: 1.12em; }
.nacs-hero__actions { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 1.8rem; }
.nacs-hero__stats { display: flex; flex-wrap: wrap; gap: 2.5rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,.18); }
.nacs-hero__stat b { display: block; font-size: 1.9rem; color: #fff; font-family: var(--nacs-font-head); line-height: 1; }
.nacs-hero__stat span { font-size: .88rem; color: #A8C4E0; }

/* --------------------------------------------------------------- footer --- */
.nacs-footer { background: var(--nacs-ink); color: #A8C0D8; padding-block: clamp(2.5rem, 5vw, 4rem) 0; }
.nacs-footer h4 { color: #fff; font-size: .95rem; text-transform: uppercase; letter-spacing: .07em; margin-bottom: 1rem; }
.nacs-footer a { color: #C9D8E8; }
.nacs-footer a:hover { color: #fff; }
.nacs-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .45rem; font-size: .93rem; }
.nacs-footer__bottom {
  margin-top: 2.5rem; padding-block: 1.25rem; border-top: 1px solid rgba(255,255,255,.12);
  font-size: .85rem; display: flex; flex-wrap: wrap; gap: .6rem 1.5rem; justify-content: space-between;
}

/* ----------------------------------------------------------------- forms -- */
.nacs-field { display: grid; gap: .4rem; margin-bottom: 1.05rem; }
.nacs-field label { font-weight: 650; color: var(--nacs-ink); font-size: .93rem; }
.nacs-field .req { color: #C0392B; }
.nacs-input, .nacs-select, .nacs-textarea {
  width: 100%; padding: .8rem .95rem; font: inherit; color: var(--nacs-ink);
  background: #fff; border: 1.5px solid var(--nacs-line); border-radius: var(--nacs-radius);
  transition: border-color .15s ease, box-shadow .15s ease; min-height: 48px;
}
.nacs-input:focus, .nacs-select:focus, .nacs-textarea:focus {
  border-color: var(--nacs-primary); box-shadow: 0 0 0 4px rgba(18,87,160,.13); outline: none;
}
.nacs-textarea { min-height: 8rem; resize: vertical; }
.nacs-help { font-size: .85rem; color: #7D8FA3; }
.nacs-error { color: #C0392B; font-size: .88rem; font-weight: 600; }

/* HONEYPOT (item 7). Must be reachable by nothing a human does, and invisible to
   assistive tech as well as to sighted users - aria-hidden + tabindex -1 on the
   input itself. Never use display:none alone: some bots skip display:none fields
   specifically because it is the classic tell. */
.nacs-hp {
  position: absolute !important; left: -9999px !important; top: auto !important;
  width: 1px !important; height: 1px !important; overflow: hidden !important;
}

.nacs-captcha { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; }
.nacs-captcha__q {
  font-weight: 700; color: var(--nacs-ink); background: var(--nacs-wash);
  border: 1.5px solid var(--nacs-line); border-radius: var(--nacs-radius);
  padding: .8rem 1rem; min-height: 48px; display: flex; align-items: center; white-space: nowrap;
}
.nacs-captcha .nacs-input { max-width: 8rem; }

.nacs-alert { padding: 1rem 1.15rem; border-radius: var(--nacs-radius); margin-bottom: 1.25rem; font-weight: 600; }
.nacs-alert--ok  { background: #E8F6EE; color: #1E6B41; border: 1px solid #BFE3CF; }
.nacs-alert--bad { background: #FDECEA; color: #A2342A; border: 1px solid #F3C7C1; }

/* ---------------------------------------------------------------- tables -- */
/* Wide content scrolls inside its own container so the PAGE never scrolls. */
.nacs-scroll-x { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; }
th, td { padding: .7rem .9rem; border-bottom: 1px solid var(--nacs-line); text-align: left; }
th { color: var(--nacs-ink); font-weight: 700; background: var(--nacs-wash); }

/* ------------------------------------------------------------------ shop -- */
.nacs-product { display: flex; flex-direction: column; }
.nacs-product__img { aspect-ratio: 4/3; object-fit: contain; background: var(--nacs-wash); border-radius: var(--nacs-radius); padding: .75rem; }
.nacs-product__price { font-family: var(--nacs-font-head); font-size: 1.3rem; color: var(--nacs-ink); font-weight: 800; }
.nacs-product__note { font-size: .84rem; color: #7D8FA3; }

/* ------------------------------------------------------------- utilities -- */
.nacs-sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.nacs-stack > * + * { margin-top: 1rem; }