/* ------------------------------------------------------------------
   PartsBay — main stylesheet
   Order: reset → primitives → layout → components → responsive
------------------------------------------------------------------ */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--c-paper);
  color: var(--c-ink-soft);
  font-family: var(--f-body);
  font-size: var(--t-body);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
ul { margin: 0; padding: 0; list-style: none; }
dl, dd, dt, p, h1, h2, h3 { margin: 0; }

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.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;
}

.skip-link {
  position: absolute; left: var(--s-3); top: -100px; z-index: 100;
  background: var(--c-ink); color: var(--c-inverse-ink);
  padding: 0.7rem 1.1rem; font-size: var(--t-small);
  transition: top 180ms var(--ease);
}
.skip-link:focus { top: var(--s-3); }

/* --- primitives --------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

h1, h2, h3 {
  font-family: var(--f-display);
  color: var(--c-ink);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.08;
}

.eyebrow {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  margin-bottom: var(--s-3);
}

.section { padding-block: var(--s-7); }

.section__head { max-width: 46rem; margin-bottom: var(--s-6); }
.section__title { font-size: var(--t-h2); }
.section__intro {
  margin-top: var(--s-3);
  font-size: var(--t-lead);
  max-width: 38rem;
}

/* --- header ------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--c-paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 220ms var(--ease), background 220ms var(--ease);
}
.site-header.is-stuck { border-bottom-color: var(--c-line); }

.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-3);
  min-height: 74px;
}

.brand { display: inline-flex; align-items: center; }
.brand__logo { width: 152px; height: auto; }

.nav { display: flex; align-items: center; gap: var(--s-4); }

.nav__link {
  font-size: var(--t-small);
  color: var(--c-ink);
  padding-block: 0.35rem;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}
.nav__link:hover { border-bottom-color: var(--c-accent); color: var(--c-accent); }

.nav__locale {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  padding-left: var(--s-4);
  border-left: 1px solid var(--c-line-strong);
}

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  background: none; border: var(--border); border-radius: var(--radius);
  cursor: pointer;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: ""; display: block;
  width: 18px; height: 1.5px;
  background: var(--c-ink);
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}
.nav-toggle__bars::before { transform: translateY(-6px); }
.nav-toggle__bars::after  { transform: translateY(4.5px); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { transform: translateY(-1.5px) rotate(-45deg); }

/* --- hero --------------------------------------------------------- */
.hero { padding-block: clamp(3.5rem, 2rem + 6vw, 7.5rem) var(--s-7); }

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: var(--s-6);
  align-items: center;
}

.hero__title {
  font-size: var(--t-hero);
  font-weight: 600;
  max-width: 17ch;
  text-wrap: balance;
}

.hero__lead {
  margin-top: var(--s-4);
  font-size: var(--t-lead);
  max-width: 40ch;
}

.hero__actions {
  display: flex; flex-wrap: wrap; gap: var(--s-2);
  margin-top: var(--s-5);
}

.button {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--f-body);
  font-size: var(--t-small);
  font-weight: 500;
  padding: 0.82rem 1.35rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background 180ms var(--ease), color 180ms var(--ease),
              border-color 180ms var(--ease), transform 180ms var(--ease);
}
.button--primary { background: var(--c-ink); color: var(--c-inverse-ink); }
.button--primary:hover { background: var(--c-accent); transform: translateY(-1px); }
.button--ghost { border-color: var(--c-line-strong); color: var(--c-ink); }
.button--ghost:hover { border-color: var(--c-ink); transform: translateY(-1px); }

.spec-strip {
  display: flex; flex-wrap: wrap; gap: var(--s-5);
  margin-top: var(--s-6);
  padding-top: var(--s-3);
  border-top: var(--border);
}
.spec-strip dt {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  margin-bottom: 0.35rem;
}
.spec-strip dd { font-size: var(--t-small); color: var(--c-ink); }

/* hexagonal lattice — the signature motif, taken from the logo mark */
.hero__figure { justify-self: end; width: 100%; max-width: 420px; }
.lattice { width: 100%; height: auto; }
.hex {
  fill: none;
  stroke: var(--c-line-strong);
  stroke-width: 1;
}
.hex--on {
  stroke: var(--c-accent);
  stroke-width: 1.6;
  fill: var(--c-accent-soft);
}

/* --- divisions ---------------------------------------------------- */
.section--divisions { border-top: var(--border); }

.divisions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--s-3);
}

.division {
  display: flex; flex-direction: column;
  background: var(--c-surface);
  border: var(--border);
  border-radius: var(--radius);
  padding: var(--s-4) var(--s-4) var(--s-3);
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}
.division:hover { border-color: var(--c-line-strong); transform: translateY(-2px); }

.division__head {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: var(--s-3);
  border-bottom: var(--border);
  margin-bottom: var(--s-3);
}
.division__mark { width: 26px; height: 26px; color: var(--c-brand); }
.division__code {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.18em;
  color: var(--c-ink-soft);
}

.division__name { font-size: var(--t-h3); }
.division__kicker {
  margin-top: 0.4rem;
  font-family: var(--f-mono);
  font-size: var(--t-small);
  color: var(--c-accent);
}
.division__text { margin-top: var(--s-2); font-size: var(--t-small); }

.division__spec { margin-top: var(--s-4); display: grid; gap: 0.55rem; }
.division__spec > div {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: var(--s-2);
  padding-top: 0.55rem;
  border-top: var(--border);
}
.division__spec dt {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
}
.division__spec dd { font-size: var(--t-small); color: var(--c-ink); text-align: right; }

.status { display: inline-flex; align-items: center; gap: 0.45rem; }
.status::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--c-accent);
}
.status--soon::before { background: var(--c-line-strong); }

.division__link {
  margin-top: var(--s-4);
  align-self: flex-start;
  font-family: var(--f-mono);
  font-size: var(--t-small);
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--c-line-strong);
  border-radius: var(--radius-pill);
}
.division__link--soon { color: var(--c-ink-soft); cursor: default; }
a.division__link {
  color: var(--c-ink);
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}
a.division__link:hover { background: var(--c-ink); color: var(--c-inverse-ink); border-color: var(--c-ink); }

/* --- about -------------------------------------------------------- */
.section--about { border-top: var(--border); }

.about {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--s-6);
  align-items: start;
}
.about__text p + p { margin-top: var(--s-3); }
.about__text .section__title { margin-bottom: var(--s-3); }

.markets__title {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  padding-bottom: var(--s-2);
  border-bottom: 1px solid var(--c-line-strong);
}
.markets__item {
  display: flex; align-items: baseline; gap: var(--s-3);
  padding-block: var(--s-2);
  border-bottom: var(--border);
  color: var(--c-ink);
  font-size: var(--t-lead);
  font-family: var(--f-display);
  letter-spacing: -0.01em;
}
.markets__code {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  color: var(--c-accent);
  letter-spacing: 0.08em;
}

/* --- contact ------------------------------------------------------ */
.section--contact { border-top: var(--border); }

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--s-6);
  align-items: start;
}
.contact__lead .section__title { margin-bottom: var(--s-3); }
.contact__lead p { max-width: 42ch; }

.contact__row {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: var(--s-3);
  padding-block: var(--s-3);
  border-top: var(--border);
}
.contact__row:last-child { border-bottom: var(--border); }
.contact__row dt {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  padding-top: 0.2rem;
}
.contact__row dd { color: var(--c-ink); font-size: var(--t-small); }
.contact__row a {
  border-bottom: 1px solid var(--c-line-strong);
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}
.contact__row a:hover { color: var(--c-accent); border-bottom-color: var(--c-accent); }

/* --- footer ------------------------------------------------------- */
.site-footer {
  background: var(--c-inverse);
  color: var(--c-inverse-soft);
  padding-top: var(--s-6);
}
.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--s-5);
  padding-bottom: var(--s-6);
}
.site-footer__logo { width: 150px; height: auto; }
.site-footer__address {
  margin-top: var(--s-3);
  font-family: var(--f-mono);
  font-size: var(--t-small);
  line-height: 1.7;
}

.site-footer__nav { display: flex; gap: var(--s-6); justify-content: flex-end; }
.footer-col__title {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-inverse-soft);
  margin-bottom: var(--s-2);
}
.footer-col li { margin-bottom: 0.55rem; }
.footer-col a {
  font-size: var(--t-small);
  color: var(--c-inverse-ink);
  border-bottom: 1px solid transparent;
  transition: border-color 180ms var(--ease);
}
.footer-col a:hover { border-bottom-color: var(--c-inverse-ink); }

.site-footer__base {
  display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-4);
  justify-content: space-between;
  padding-block: var(--s-3);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.06em;
}

/* --- motion ------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* --- responsive --------------------------------------------------- */
@media (max-width: 1000px) {
  .divisions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero__inner { grid-template-columns: minmax(0, 1fr); }
  .hero__figure { display: none; }
  .about, .contact { grid-template-columns: minmax(0, 1fr); gap: var(--s-5); }
  .site-footer__nav { justify-content: flex-start; }
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }

  .nav {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: flex-start; gap: var(--s-2);
    padding: var(--s-3) var(--gutter) var(--s-4);
    background: var(--c-paper);
    border-bottom: var(--border);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav__link { font-size: 1.05rem; }
  .nav__locale { padding-left: 0; border-left: 0; }

  .divisions { grid-template-columns: minmax(0, 1fr); }
  .spec-strip { gap: var(--s-3) var(--s-4); }
  .site-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .site-footer__nav { gap: var(--s-5); }
  .contact__row { grid-template-columns: minmax(0, 1fr); gap: 0.3rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}