/* ============================================================
   Stellar Corporate — site.css
   Design tokens + global chrome (nav, footer, base type, buttons).
   Page-specific styles live in each page's own <style> block or in
   components.css. Palette: Forest & Copper.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Outfit:wght@200;300;400;500;600;700&display=swap');

/* ---- Design tokens ---------------------------------------------------
   CONTRAST RULES — read before using a colour as text:
     copper  #C2703D on bone = 4.1:1  -> large text (24px+) and UI only,
                                         NEVER body copy.
     pine    #166B54 on bone = 7.2:1  -> the token for green body text.
     forest  #0A3B31 on bone = 13.4:1 -> default text colour.
     bone    #F7F4EE on forest = 13.4:1 -> reversed text.
     ember   #E39355 on forest = 6.8:1 -> the copper substitute on dark.
   Same discipline Coremetryx documents for its lime. Follow it.
   --------------------------------------------------------------------- */
:root {
  --forest: #0A3B31;
  --forest-deep: #062A23;
  --pine: #166B54;
  --copper: #C2703D;
  --ember: #E39355;
  --bone: #F7F4EE;

  /* neutrals — warm, biased slightly green so they sit with the palette */
  --ink: #0A3B31;
  --body: #3D4F48;
  --muted: #77837C;
  --line: #DED8CB;
  --line-strong: #C6BFAE;
  --bg: #F7F4EE;
  --bg-alt: #EFEBE2;
  --surface: #FFFFFF;

  /* type */
  --font-display: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --font-body: 'Outfit', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* layout */
  --maxw: 1180px;
  --measure: 66ch;
  --gutter: clamp(1.1rem, 4vw, 2.5rem);
  --radius: 10px;
  --shadow: 0 6px 28px rgba(10, 59, 49, 0.09);
  --shadow-lg: 0 18px 50px rgba(10, 59, 49, 0.14);
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.015em;
  text-wrap: balance;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.1rem); }
h2 { font-size: clamp(1.9rem, 3.8vw, 2.9rem); }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.6rem); }

/* Sans headings for UI-ish contexts (cards, small sections) */
.h-sans {
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

p { margin: 0 0 1.1rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--pine); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--forest); }

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

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

strong { font-weight: 600; color: var(--ink); }

::selection { background: var(--copper); color: #fff; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--forest);
  color: var(--bone);
  padding: 0.7rem 1.1rem;
  z-index: 200;
}
.skip-link:focus { left: 0; }

/* ---- Layout helpers ---- */
.container {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.measure { max-width: var(--measure); }

section { padding-block: clamp(3rem, 8vw, 6.5rem); }

.section--alt { background: var(--bg-alt); }
.section--dark { background: var(--forest); color: #C9D4CF; }
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--bone); }
.section--dark a { color: var(--ember); }
.section--dark strong { color: var(--bone); }

/* Eyebrow label above a section heading */
.eyebrow {
  font-family: var(--font-body);
  font-size: 0.74rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--copper);
  margin: 0 0 0.9rem;
}
.section--dark .eyebrow { color: var(--ember); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.97rem;
  font-weight: 500;
  line-height: 1;
  padding: 0.95rem 1.6rem;
  border: 1.5px solid var(--forest);
  border-radius: var(--radius);
  background: var(--forest);
  color: var(--bone);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.btn:hover {
  background: var(--forest-deep);
  border-color: var(--forest-deep);
  color: var(--bone);
  transform: translateY(-1px);
}

.btn--copper { background: var(--copper); border-color: var(--copper); color: #fff; }
.btn--copper:hover { background: #A85A2C; border-color: #A85A2C; color: #fff; }

.btn--ghost { background: transparent; color: var(--forest); }
.btn--ghost:hover { background: var(--forest); color: var(--bone); }

.btn--sm { padding: 0.68rem 1.15rem; font-size: 0.9rem; }

.section--dark .btn { background: var(--bone); border-color: var(--bone); color: var(--forest); }
.section--dark .btn:hover { background: #fff; border-color: #fff; }
.section--dark .btn--ghost { background: transparent; color: var(--bone); border-color: rgba(247,244,238,.45); }
.section--dark .btn--ghost:hover { background: var(--bone); color: var(--forest); border-color: var(--bone); }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.8rem; }

@media (prefers-reduced-motion: reduce) {
  .btn, .btn:hover { transition: none; transform: none; }
}

/* ---- Nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 244, 238, 0.92);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav__inner {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 0.85rem var(--gutter);
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  flex-shrink: 0;
}
.nav__glyph { width: 34px; height: 34px; }
.nav__word { display: flex; flex-direction: column; gap: 2px; }
.nav__w1 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.06rem;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--forest);
}
.nav__rule { height: 1.5px; background: var(--copper); width: 100%; }
.nav__w2 {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.5rem;
  letter-spacing: 0.34em;
  line-height: 1;
  color: var(--body);
}

.nav__links {
  display: flex;
  gap: 1.7rem;
  list-style: none;
  margin: 0 0 0 auto;
  padding: 0;
}
.nav__links a {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--body);
  text-decoration: none;
  padding-block: 0.3rem;
  border-bottom: 2px solid transparent;
}
.nav__links a:hover { color: var(--forest); }
.nav__links a[aria-current="page"] {
  color: var(--forest);
  font-weight: 500;
  border-bottom-color: var(--copper);
}

.nav__mobile-cta { display: none; }
.nav__toggle { display: none; }

@media (max-width: 900px) {
  .nav__cta { display: none; }
  .nav__toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    margin-left: auto;
    width: 42px;
    height: 42px;
    padding: 0 9px;
    background: none;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    cursor: pointer;
  }
  .nav__toggle span {
    display: block;
    height: 1.5px;
    background: var(--forest);
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
  .nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    margin: 0;
    padding: 0.5rem var(--gutter) 1.2rem;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }
  .nav__links.is-open { display: flex; }
  .nav__links li { border-bottom: 1px solid var(--line); }
  .nav__links li:last-child { border-bottom: none; }
  .nav__links a { display: block; padding: 0.9rem 0; border-bottom: none; }
  .nav__links a[aria-current="page"] { border-bottom: none; color: var(--copper); }
  .nav__mobile-cta { display: block; margin-top: 0.6rem; }
  .nav__mobile-cta a { color: var(--copper); font-weight: 500; }
  @media (prefers-reduced-motion: reduce) {
    .nav__toggle span { transition: none; }
  }
}

/* ---- Footer ---- */
.site-footer {
  background: var(--forest);
  color: #A8B8B2;
  padding-block: clamp(2.8rem, 6vw, 4.5rem) 2rem;
  font-size: 0.94rem;
}

.site-footer a { color: #C9D4CF; text-decoration: none; }
.site-footer a:hover { color: var(--bone); text-decoration: underline; }

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 2.5rem 2rem;
}
@media (max-width: 820px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .site-footer__grid { grid-template-columns: 1fr; gap: 1.8rem; } }

.site-footer__brand { display: flex; flex-direction: column; gap: 0.9rem; }
.site-footer__logo { display: flex; align-items: center; gap: 0.75rem; }
.site-footer__logo img { width: 38px; height: 38px; }
.site-footer__w1 {
  font-weight: 600; font-size: 1.15rem; letter-spacing: -0.01em; line-height: 1; color: var(--bone);
}
.site-footer__rule { height: 1.5px; background: var(--ember); width: 100%; }
.site-footer__w2 {
  font-weight: 300; font-size: 0.55rem; letter-spacing: 0.34em; line-height: 1; color: #A8B8B2;
}
.site-footer__tagline { max-width: 34ch; color: #A8B8B2; }

.site-footer strong {
  display: block;
  color: var(--bone);
  font-weight: 500;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  margin-bottom: 0.85rem;
}

.site-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.55rem; }

.site-footer__bottom {
  margin-top: 3rem;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(247, 244, 238, 0.14);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  font-size: 0.85rem;
  color: #8FA099;
}

/* ---- Reveal on scroll (progressive enhancement; JS adds .is-in) ---- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* No JS: never leave content invisible. */
.no-js .reveal { opacity: 1; transform: none; }