/* ==========================================================================
   TerraSequest — www.terrasequest.com
   Colour and type follow Brand Guidelines v1.0.
   ========================================================================== */

:root {
  /* Primary */
  --forest-deep:  #092F1E;
  --signal-green: #2E7D32;
  --leaf-green:   #50782E;
  --earth-brown:  #8C5E2E;
  /* Neutral */
  --ink:    #0F1F18;
  --slate:  #4A4A4A;
  --mist:   #BDBDBD;
  --cloud:  #E6E6E6;
  --paper:  #FFFFFF;

  --display: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --body:    "Montserrat", "Segoe UI", Arial, sans-serif;

  --wrap: 1120px;
  --gutter: clamp(1.25rem, 5vw, 3.5rem);
  --rail: 10px;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  font-family: var(--body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--signal-green); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 3px solid var(--signal-green);
  outline-offset: 3px;
}

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--forest-deep); color: var(--paper);
  padding: .75rem 1.25rem; z-index: 100;
}
.skip:focus { left: 0; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* --------------------------------------------------------------------------
   Signature: soil-horizon core sample
   A fixed strip reading the page as a vertical profile — atmosphere, canopy,
   topsoil, biochar, subsoil — with a marker that tracks scroll depth.
   -------------------------------------------------------------------------- */
.core {
  display: none;
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--rail);
  z-index: 60;
  background: linear-gradient(
    to bottom,
    var(--forest-deep) 0%,
    var(--forest-deep) 22%,
    var(--leaf-green)  22%,
    var(--leaf-green)  40%,
    var(--earth-brown) 40%,
    var(--earth-brown) 58%,
    var(--ink)         58%,
    var(--ink)         80%,
    var(--slate)       80%,
    var(--slate)       100%
  );
}
.core-marker {
  position: absolute;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--paper);
  box-shadow: 0 0 0 1px rgba(9, 47, 30, .4);
  transition: top .1s linear;
}

@media (min-width: 1024px) {
  .core { display: block; }
  body  { padding-left: var(--rail); }
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--cloud);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 76px;
}
.brand {
  display: flex;
  align-items: center;
  gap: .85rem;
}
.brand img { height: 40px; width: auto; }
.brand-word { height: 22px !important; }

.site-header nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2.25rem);
}
.site-header nav a {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--forest-deep);
  padding-block: .35rem;
  border-bottom: 2px solid transparent;
}
.site-header nav a:hover {
  text-decoration: none;
  border-bottom-color: var(--leaf-green);
}

@media (max-width: 560px) {
  .brand-word { display: none; }
  .site-header nav { gap: 1rem; }
  .site-header nav a { font-size: .64rem; letter-spacing: .1em; }
}

/* --------------------------------------------------------------------------
   Hero — the atmosphere layer
   -------------------------------------------------------------------------- */
.hero {
  background:
    radial-gradient(120% 90% at 50% 0%, #0E4029 0%, var(--forest-deep) 62%);
  color: var(--paper);
  text-align: center;
  padding-block: clamp(5rem, 13vw, 9rem);
  border-bottom: 4px solid var(--leaf-green);
}
.hero-inner { max-width: 46rem; }

.hero h1 {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(3.4rem, 11vw, 6.5rem);
  line-height: .95;
  letter-spacing: .005em;
  margin: 0 0 1.6rem;
  color: var(--paper);
}

.tagline {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: center;
  font-family: var(--body);
  font-size: clamp(.66rem, 1.9vw, .82rem);
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: #A7C48A;
  margin: 0 0 2.4rem;
}
.tagline::before,
.tagline::after {
  content: "";
  flex: 0 1 3.5rem;
  height: 1px;
  background: var(--leaf-green);
}

.lede {
  font-size: clamp(1rem, 2.1vw, 1.125rem);
  line-height: 1.85;
  color: rgba(255, 255, 255, .84);
  margin: 0;
}

/* --------------------------------------------------------------------------
   Shared section furniture
   -------------------------------------------------------------------------- */
.eyebrow {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--leaf-green);
  margin: 0 0 .6rem;
}

main h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2rem, 4.6vw, 2.9rem);
  line-height: 1.15;
  color: var(--forest-deep);
  margin: 0 0 2.5rem;
}

main h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.4rem, 2.6vw, 1.75rem);
  line-height: 1.25;
  color: var(--forest-deep);
  margin: 0 0 .85rem;
}

main p { color: var(--slate); }

/* --------------------------------------------------------------------------
   Offerings — the surface layer
   -------------------------------------------------------------------------- */
.offerings { padding-block: clamp(3.5rem, 9vw, 6rem); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
}
.card {
  border: 1px solid var(--cloud);
  border-top: 3px solid var(--leaf-green);
  padding: clamp(1.75rem, 3.5vw, 2.5rem);
  background: var(--paper);
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.card:hover {
  border-color: var(--mist);
  border-top-color: var(--signal-green);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px -18px rgba(9, 47, 30, .5);
}
.card p { margin: 0; }

/* --------------------------------------------------------------------------
   Featured project — the soil layer
   -------------------------------------------------------------------------- */
.project {
  background: var(--cloud);
  padding-block: clamp(3.5rem, 9vw, 6rem);
  border-top: 1px solid var(--mist);
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: start;
}
@media (min-width: 860px) {
  .project-grid { grid-template-columns: 1.05fr 1fr; }
}

.project-figure { margin: 0; }
.project-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-left: 5px solid var(--earth-brown);
}
.project-figure figcaption {
  font-size: .82rem;
  line-height: 1.6;
  color: var(--slate);
  padding-top: .8rem;
  border-top: 1px solid var(--mist);
  margin-top: .8rem;
}

.project-kicker {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--earth-brown);
  margin: 0 0 1.4rem;
}
.project-kicker b { font-weight: 600; }
.project-copy p + p { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   Footer — the subsoil layer
   -------------------------------------------------------------------------- */
footer {
  background: var(--forest-deep);
  color: rgba(255, 255, 255, .8);
  padding-block: clamp(3rem, 7vw, 4.5rem) 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
@media (min-width: 760px) {
  .footer-inner { grid-template-columns: auto 1fr; }
}

.footer-brand img { width: clamp(180px, 24vw, 240px); height: auto; }

.footer-contact h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.6rem;
  color: var(--paper);
  margin: 0 0 1rem;
}
.footer-contact p { margin: 0 0 1.1rem; font-size: .92rem; line-height: 1.8; }
.legal-name { max-width: 34rem; }
.footer-links a { color: #A7C48A; }
.footer-links a:hover { color: var(--paper); }

.footer-legal {
  margin-top: clamp(2.5rem, 6vw, 3.5rem);
  padding-block: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, .14);
}
.footer-legal p {
  margin: 0;
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .5);
}

@media print {
  .core, .site-header nav { display: none; }
  body { padding-left: 0; }
  .hero, footer { background: none; color: #000; }
}

@media (max-width: 480px) {
  .tagline { gap: .5rem; }
  .tagline::before, .tagline::after { display: none; }
}