/* ============================================================
   G&C Consulting LLC — corporate site
   Plain CSS, mobile-first, system fonts only, no external deps.
   Color: navy / charcoal / single accent, deliberately understated.
   ============================================================ */

:root {
  /* palette */
  --bg:        #ffffff;
  --bg-alt:    #f7f8fb;
  --ink:       #0f172a;   /* near-black navy for body text */
  --ink-soft:  #475569;   /* secondary text — ~7:1 on white */
  --ink-mute:  #52617a;   /* tertiary, captions — ~6.2:1 on white (WCAG AA) */
  --line:      #e2e8f0;
  --accent:    #1d4ed8;   /* single accent, used sparingly */
  --accent-fg: #ffffff;

  /* type */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* layout */
  --maxw: 72rem;     /* ~1152px */
  --maxw-prose: 44rem;
  --gutter: 1.25rem;
  --radius: 6px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:       #0b1220;
    --bg-alt:   #111a2e;
    --ink:      #e2e8f0;
    --ink-soft: #cbd5e1;   /* ~12:1 on dark navy */
    --ink-mute: #94a3b8;   /* ~6.8:1 on dark navy (WCAG AA) */
    --line:     #1e293b;
    --accent:   #60a5fa;
    --accent-fg:#0b1220;
  }
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }

/* ---------- skip link (a11y) ---------- */
.skip-link {
  position: absolute; top: -40px; left: 0;
  background: var(--ink); color: var(--bg);
  padding: 0.5rem 0.75rem; z-index: 100;
  text-decoration: none;
}
.skip-link:focus { top: 0; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.875rem var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-weight: 700; letter-spacing: -0.01em;
  color: var(--ink); text-decoration: none;
  font-size: 1.0625rem;
}
.brand__mark {
  width: 28px; height: 28px; border-radius: 6px;
  background: var(--ink); color: var(--bg);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.75rem; letter-spacing: -0.5px;
}
.site-nav {
  display: flex; align-items: center; gap: 1.25rem;
  font-size: 0.9375rem;
}
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
}
.site-nav a:hover { color: var(--ink); }
.lang-toggle {
  display: inline-flex; gap: 0.25rem;
  font-size: 0.8125rem; font-weight: 500;
  color: var(--ink-mute);
}
.lang-toggle a { color: var(--ink-mute); text-decoration: none; padding: 0.125rem 0.375rem; }
.lang-toggle a[aria-current="true"] { color: var(--ink); font-weight: 600; }
.lang-toggle a:hover { color: var(--ink); }
.lang-toggle__sep { color: var(--ink-mute); }

@media (max-width: 600px) {
  .site-nav { gap: 0.875rem; }
  .site-nav a:not(.lang-toggle a) { display: none; }
  /* keep only lang toggle visible on mobile, brand stays */
}

/* ---------- main / sections ---------- */
main { display: block; }
.section {
  padding: 4.5rem var(--gutter);
}
.section--alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__inner { max-width: var(--maxw); margin: 0 auto; }
.section__inner--prose { max-width: var(--maxw-prose); margin: 0 auto; }

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

h1, h2, h3 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 1rem;
}
h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); margin-top: 0; }
h3 { font-size: 1.125rem; margin-top: 1.5rem; }
p  { margin: 0 0 1rem; color: var(--ink); }
.lead { font-size: 1.125rem; color: var(--ink-soft); max-width: 42rem; }

/* ---------- hero ---------- */
.hero {
  padding: 6rem var(--gutter) 4.5rem;
  background:
    radial-gradient(ellipse at top right, color-mix(in srgb, var(--accent) 10%, transparent), transparent 60%),
    var(--bg);
}
.hero__inner { max-width: var(--maxw); margin: 0 auto; }
.hero__legal {
  display: inline-block;
  font-size: 0.8125rem;
  color: var(--ink-mute);
  margin-top: 1.5rem;
  font-family: var(--font-mono);
}

/* ---------- portfolio grid ---------- */
.portfolio {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}
.portfolio__card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--bg);
  display: flex; flex-direction: column; gap: 0.5rem;
  transition: border-color 120ms ease;
}
.portfolio__card:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.portfolio__card h3 { margin: 0; font-size: 1.0625rem; }
.portfolio__card .industry {
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-mute);
}
.portfolio__card p { color: var(--ink-soft); font-size: 0.9375rem; margin: 0; }

/* ---------- contact block ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.contact-grid dt {
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.25rem;
}
.contact-grid dd { margin: 0; color: var(--ink); font-size: 0.9375rem; line-height: 1.55; }
.contact-grid dd a { color: var(--ink); text-decoration-color: var(--ink-mute); }
.contact-grid address { font-style: normal; }

/* ---------- prose pages (privacy, terms) ---------- */
.prose { max-width: var(--maxw-prose); margin: 0 auto; }
.prose h2 { margin-top: 2.5rem; font-size: 1.375rem; }
.prose h3 { margin-top: 1.75rem; font-size: 1.0625rem; color: var(--ink); }
.prose p, .prose li { color: var(--ink); font-size: 0.9375rem; line-height: 1.7; }
.prose ul, .prose ol { padding-left: 1.25rem; margin: 0 0 1rem; }
.prose li { margin-bottom: 0.375rem; }
.prose .updated {
  font-family: var(--font-mono); font-size: 0.8125rem;
  color: var(--ink-mute); margin-bottom: 2rem;
}
.prose .disclaimer {
  border-left: 3px solid var(--accent);
  background: var(--bg-alt);
  padding: 1rem 1.25rem;
  margin: 2rem 0;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
  padding: 2.5rem var(--gutter);
  font-size: 0.875rem;
  color: var(--ink-soft);
}
.site-footer__inner {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .site-footer__inner { grid-template-columns: 1fr auto; align-items: end; }
}
.site-footer address { font-style: normal; line-height: 1.55; }
.site-footer__legal-links {
  display: flex; flex-wrap: wrap; gap: 1rem;
  list-style: none; margin: 0; padding: 0;
}
.site-footer__legal-links a { color: var(--ink-soft); text-decoration: none; }
.site-footer__legal-links a:hover { color: var(--ink); text-decoration: underline; }
.site-footer__copy { color: var(--ink-mute); font-size: 0.8125rem; margin-top: 0.75rem; }

/* ---------- cookie banner ---------- */
.cookie-banner {
  position: fixed; left: 1rem; right: 1rem; bottom: 1rem;
  max-width: 36rem; margin: 0 auto;
  background: var(--ink);
  color: var(--bg);
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  box-shadow: 0 10px 40px rgba(0,0,0,0.25);
  display: none;
  z-index: 50;
  font-size: 0.875rem;
}
.cookie-banner[data-visible="true"] { display: flex; flex-direction: column; gap: 0.75rem; }
@media (min-width: 600px) {
  .cookie-banner[data-visible="true"] { flex-direction: row; align-items: center; }
}
.cookie-banner p { color: var(--bg); margin: 0; }
.cookie-banner a { color: var(--bg); text-decoration: underline; }
.cookie-banner__buttons { display: flex; gap: 0.5rem; flex-shrink: 0; }
.cookie-banner button {
  font: inherit; cursor: pointer;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  border: 1px solid color-mix(in srgb, var(--bg) 40%, transparent);
  background: transparent; color: var(--bg);
  transition: background 120ms ease;
}
.cookie-banner button:hover { background: color-mix(in srgb, var(--bg) 14%, transparent); }
.cookie-banner button.is-primary {
  background: var(--bg); color: var(--ink); border-color: var(--bg);
}
.cookie-banner button.is-primary:hover { background: color-mix(in srgb, var(--bg) 88%, var(--ink)); }

/* ---------- print ---------- */
@media print {
  .site-header, .cookie-banner, .lang-toggle { display: none; }
  .section { padding: 1rem 0; }
  body { color: #000; background: #fff; }
  a { color: #000; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}