/* GT Design — shared site styles
   Brand colours are centralized here for quick replacement when the final palette arrives. */
:root {
  --color-primary: #2d5f4b;
  --color-primary-dark: #1f4536;
  --color-secondary: #4c7a66;
  --color-accent: #99a28e;
  --color-ink: #1c2a24;
  --color-muted: #5c6b60;
  --color-line: #dde3da;
  --color-surface: #f4f6f1;
  --color-white: #ffffff;
  --shadow-soft: 0 18px 50px rgba(31, 69, 54, 0.08);
  --radius: 4px;
  --container: 1120px;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--color-ink);
  background: var(--color-white);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 3px solid rgba(45, 95, 75, 0.45); outline-offset: 3px; }

.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section { padding: 96px 0; }
.section--soft { background: var(--color-surface); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  color: var(--color-secondary);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.eyebrow::before { width: 26px; height: 2px; background: var(--color-accent); content: ""; }
h1, h2, h3 { margin: 0; color: var(--color-primary-dark); line-height: 1.14; letter-spacing: -0.025em; }
h1 { font-size: clamp(2.65rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.25rem; }
p { margin: 0; }
.lead { color: var(--color-muted); font-size: clamp(1.05rem, 2vw, 1.25rem); line-height: 1.75; }
.section-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: end; margin-bottom: 48px; }
.section-heading .lead { max-width: 590px; }

/* Header and navigation */
.site-header { position: relative; z-index: 20; border-bottom: 1px solid rgba(219, 227, 232, 0.8); background: rgba(255,255,255,0.96); }
.nav-wrap { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: max-content; }
.brand img { width: 164px; height: 42px; object-fit: contain; object-position: left center; }
.site-nav { display: flex; align-items: center; gap: 34px; }
.site-nav a:not(.button) { position: relative; color: var(--color-muted); font-size: 0.92rem; font-weight: 650; }
.site-nav a:not(.button)::after { position: absolute; right: 0; bottom: -11px; left: 0; height: 2px; background: var(--color-accent); content: ""; transform: scaleX(0); transform-origin: right; transition: transform 180ms ease; }
.site-nav a:not(.button):hover, .site-nav a:not(.button)[aria-current="page"] { color: var(--color-primary); }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.nav-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 1px solid var(--color-line); border-radius: var(--radius); background: white; cursor: pointer; }
.nav-toggle span { display: block; width: 100%; height: 2px; margin: 5px 0; background: var(--color-primary); transition: 180ms ease; }

/* Buttons */
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 10px; padding: 0 22px; border: 1px solid var(--color-primary); border-radius: var(--radius); background: var(--color-primary); color: white; font-size: 0.9rem; font-weight: 750; transition: transform 180ms ease, background 180ms ease, border-color 180ms ease; }
.button:hover { border-color: var(--color-secondary); background: var(--color-secondary); transform: translateY(-2px); }
.button--ghost { background: transparent; color: var(--color-primary); }
.button--ghost:hover { color: white; }
.text-link { display: inline-flex; align-items: center; gap: 9px; margin-top: 22px; color: var(--color-secondary); font-size: 0.9rem; font-weight: 750; }
.text-link svg { transition: transform 180ms ease; }
.text-link:hover svg { transform: translateX(4px); }

/* Home hero */
.hero { position: relative; overflow: hidden; background: linear-gradient(115deg, #fff 0%, #fff 54%, #f1f4ee 54%, #f1f4ee 100%); }
.hero::after { position: absolute; inset: 0 0 0 54%; opacity: 0.45; background-image: linear-gradient(rgba(45,95,75,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(45,95,75,.08) 1px, transparent 1px); background-size: 32px 32px; content: ""; pointer-events: none; }
.hero-grid { position: relative; z-index: 1; display: grid; min-height: 690px; grid-template-columns: 1.1fr 0.9fr; gap: 72px; align-items: center; padding: 80px 0 96px; }
.hero-copy { max-width: 700px; }
.hero h1 span { color: var(--color-secondary); }
.hero .lead { max-width: 650px; margin-top: 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.technical-visual { position: relative; aspect-ratio: 1 / 1; border: 1px solid rgba(153,162,142,.55); border-radius: 50%; }
.technical-visual::before, .technical-visual::after { position: absolute; border: 1px solid rgba(153,162,142,.55); border-radius: 50%; content: ""; }
.technical-visual::before { inset: 12%; }
.technical-visual::after { inset: 32%; border-color: var(--color-accent); }
.technical-visual__axis-x, .technical-visual__axis-y { position: absolute; z-index: 2; background: rgba(153,162,142,.7); }
.technical-visual__axis-x { top: 50%; left: -8%; width: 116%; height: 1px; }
.technical-visual__axis-y { top: -8%; left: 50%; width: 1px; height: 116%; }
.technical-visual__label { position: absolute; z-index: 3; right: 8%; bottom: 10%; padding: 8px 12px; border-left: 2px solid var(--color-accent); background: white; color: var(--color-primary); font-size: .68rem; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; box-shadow: var(--shadow-soft); }

/* Cards and service layouts */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.service-card { display: flex; min-height: 280px; flex-direction: column; padding: 30px; border: 1px solid var(--color-line); border-top: 3px solid var(--color-line); background: white; transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease; }
.service-card:hover { border-top-color: var(--color-accent); box-shadow: var(--shadow-soft); transform: translateY(-5px); }
.service-icon { width: 44px; height: 44px; margin-bottom: 30px; color: var(--color-secondary); }
.service-card p { margin-top: 14px; color: var(--color-muted); font-size: .95rem; }
.service-card .text-link { margin-top: auto; padding-top: 24px; }
.services-list { display: grid; gap: 24px; }
.service-detail { display: grid; grid-template-columns: 86px 1fr; gap: 32px; padding: 42px; border: 1px solid var(--color-line); background: white; scroll-margin-top: 24px; }
.service-detail__number { color: var(--color-secondary); font-size: .78rem; font-weight: 800; letter-spacing: .12em; }
.service-detail p { max-width: 760px; margin-top: 16px; color: var(--color-muted); }
.service-detail ul { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 22px 0 0; padding: 0; color: var(--color-primary); font-size: .85rem; font-weight: 700; list-style: none; }
.service-detail li::before { margin-right: 8px; color: var(--color-secondary); content: "+"; }

/* Inner pages */
.page-hero { position: relative; overflow: hidden; padding: 100px 0 86px; border-bottom: 1px solid var(--color-line); background: var(--color-surface); }
.page-hero::after { position: absolute; top: -140px; right: -100px; width: 420px; height: 420px; border: 1px solid rgba(153,162,142,.45); border-radius: 50%; box-shadow: 0 0 0 70px rgba(153,162,142,.12), 0 0 0 140px rgba(153,162,142,.08); content: ""; }
.page-hero__copy { position: relative; z-index: 1; max-width: 780px; }
.page-hero h1 { font-size: clamp(2.5rem, 5vw, 4.2rem); }
.page-hero .lead { margin-top: 22px; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.about-copy p + p { margin-top: 20px; }
.principles { display: grid; gap: 1px; border: 1px solid var(--color-line); background: var(--color-line); }
.principle { padding: 28px; background: white; }
.principle span { display: block; margin-bottom: 8px; color: var(--color-secondary); font-size: .72rem; font-weight: 800; letter-spacing: .12em; }
.principle p { margin-top: 8px; color: var(--color-muted); font-size: .94rem; }

/* CTA */
.cta { background: var(--color-primary-dark); color: white; }
.cta-grid { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }
.cta h2 { max-width: 720px; color: white; }
.cta p { max-width: 660px; margin-top: 18px; color: #c2d1c5; }
.cta .button { border-color: white; background: white; color: var(--color-primary); }
.cta .button:hover { border-color: var(--color-accent); background: var(--color-accent); color: var(--color-primary-dark); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 70px; }
.contact-intro .lead { margin-top: 20px; }
.contact-card { display: flex; flex-direction: column; gap: 10px; align-self: center; padding: 30px 36px; border: 1px solid var(--color-line); border-left: 3px solid var(--color-accent); background: var(--color-white); box-shadow: var(--shadow-soft); }
.contact-card__label { color: var(--color-secondary); font-size: .75rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.contact-card__value { color: var(--color-primary-dark); font-size: clamp(1rem, 2vw, 1.25rem); font-weight: 700; overflow-wrap: anywhere; }
.contact-card__value a { color: inherit; }
.contact-card__value a:hover { color: var(--color-secondary); }
.contact-card .placeholder { padding: 6px 14px; font-size: 1rem; }
.placeholder { display: inline-block; padding: 2px 7px; border: 1px dashed #adb7a7; color: #6b796d; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .86rem; }
.contact-note { margin-top: 22px; color: var(--color-muted); font-size: .86rem; }

/* Footer */
.site-footer { padding: 58px 0 28px; border-top: 1px solid var(--color-line); background: white; }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: start; }
.footer-brand { max-width: 360px; }
.footer-brand img { width: 145px; }
.footer-brand p { margin-top: 18px; color: var(--color-muted); font-size: .9rem; }
.footer-nav { display: flex; gap: 26px; color: var(--color-muted); font-size: .88rem; font-weight: 650; }
.footer-nav a:hover { color: var(--color-secondary); }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; margin-top: 46px; padding-top: 24px; border-top: 1px solid var(--color-line); color: #75827a; font-size: .78rem; }

@media (max-width: 900px) {
  .section { padding: 76px 0; }
  .nav-toggle { display: block; }
  .site-nav { position: absolute; top: 82px; right: 0; left: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 16px 20px 24px; border-bottom: 1px solid var(--color-line); background: white; box-shadow: var(--shadow-soft); }
  .site-nav.is-open { display: flex; }
  .site-nav a:not(.button) { padding: 13px 4px; }
  .site-nav a:not(.button)::after { display: none; }
  .site-nav .button { margin-top: 8px; }
  .hero { background: linear-gradient(180deg, #fff 0%, #fff 64%, #f1f4ee 64%); }
  .hero::after { inset: 64% 0 0; }
  .hero-grid { min-height: auto; grid-template-columns: 1fr; gap: 58px; padding-top: 70px; }
  .technical-visual { width: min(70vw, 430px); margin: auto; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .section-heading, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 34px; }
}

@media (max-width: 620px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .section { padding: 62px 0; }
  .brand img { width: 144px; }
  .cards { grid-template-columns: 1fr; }
  .service-card { min-height: 240px; }
  .service-detail { grid-template-columns: 1fr; gap: 14px; padding: 28px 24px; }
  .page-hero { padding: 72px 0 64px; }
  .cta-grid, .footer-grid { grid-template-columns: 1fr; }
  .cta-grid .button { justify-self: start; }
  .footer-nav { flex-wrap: wrap; gap: 12px 22px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .contact-card { padding: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}