/* Genterra Corporation — public marketing site
   Plain CSS, mobile-first. Edit tokens below to retheme. */

:root {
  --gt-deep:   #0A5BC4;
  --gt-mid:    #1E9CE6;
  --gt-mint:   #5FD3FF;
  --gt-ink:    #0A1A2E;
  --gt-ink-2:  #1F324A;
  --gt-muted:  #56697F;
  --gt-line:   #DDE3EB;
  --gt-bg:     #F4F6F8;
  --gt-header: #E8ECF0;
  --gt-card:   #FFFFFF;
  --gt-soft:   #EEF1F5;

  --gt-grad:   linear-gradient(135deg, #0A5BC4 0%, #1E9CE6 55%, #5FD3FF 100%);
  --gt-grad-soft: linear-gradient(135deg, rgba(10,91,196,0.06), rgba(95,211,255,0.12));

  --gt-radius: 14px;
  --gt-radius-sm: 8px;
  --gt-shadow: 0 6px 24px rgba(11, 31, 38, 0.06);
  --gt-shadow-lg: 0 18px 50px rgba(11, 31, 38, 0.10);

  --gt-font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --gt-font-head: "Manrope", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --gt-max: 1180px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--gt-font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gt-ink);
  background: var(--gt-bg);
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--gt-font-head);
  color: var(--gt-ink);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 0.6em;
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw + 0.5rem, 3.75rem); }
h2 { font-size: clamp(1.6rem, 3vw + 0.6rem, 2.5rem); }
h3 { font-size: clamp(1.2rem, 1.4vw + 0.8rem, 1.5rem); }

p { margin: 0 0 1em; color: var(--gt-ink-2); }

a {
  color: var(--gt-mid);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover { color: var(--gt-deep); }

.container {
  width: 100%;
  max-width: var(--gt-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header / Nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(0,0,0,0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.site-header .brand { color: #fff; }
.site-header .nav-toggle { border-color: rgba(255,255,255,0.18); }
.site-header .nav-toggle span { background: #fff; }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: var(--gt-max);
  margin: 0 auto;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--gt-font-head);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--gt-ink);
}
.brand .brand-mark { width: 38px; height: 38px; object-fit: contain; }
.brand .brand-text { height: 20px; width: auto; object-fit: contain; }
.brand span { white-space: nowrap; }

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--gt-line);
  border-radius: 8px;
  cursor: pointer;
  padding: 0 9px;
}
.nav-toggle span {
  display: block; height: 2px; background: var(--gt-ink); border-radius: 2px;
}

.nav-links {
  display: none;
  list-style: none;
  margin: 0; padding: 0;
  gap: 8px;
}
.nav-links a {
  display: block;
  padding: 10px 12px;
  color: rgba(255,255,255,0.78);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: 8px;
}
.nav-links a:hover, .nav-links a.active {
  color: #fff;
  background: rgba(255,255,255,0.06);
}

.nav-cta {
  display: none;
  padding: 10px 16px;
  background: #fff;
  color: var(--gt-ink);
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
}
.nav-cta:hover { background: var(--gt-mint); color: var(--gt-ink); }

.nav.open .nav-links {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: rgba(0,0,0,0.97);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 12px 20px 18px;
  gap: 4px;
}

@media (min-width: 880px) {
  .nav-toggle { display: none; }
  .nav-links { display: flex; }
  .nav-cta { display: inline-block; }
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-primary {
  background: var(--gt-ink);
  color: #fff;
}
.btn-primary:hover {
  background: var(--gt-deep);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--gt-shadow);
}
.btn-ghost {
  background: transparent;
  color: var(--gt-ink);
  border-color: var(--gt-line);
}
.btn-ghost:hover {
  border-color: var(--gt-deep);
  color: var(--gt-deep);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 64px 0 56px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: var(--gt-grad-soft);
  z-index: -2;
}
.hero::after {
  content: "";
  position: absolute;
  top: -120px; right: -160px;
  width: 520px; height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(95,211,255,0.18), transparent 70%);
  z-index: -1;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gt-deep);
  padding: 6px 12px;
  background: rgba(95,211,255,0.12);
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero-eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--gt-mint);
}
.hero h1 { margin-bottom: 18px; }
.hero-lead {
  font-size: 1.15rem;
  color: var(--gt-ink-2);
  max-width: 580px;
  margin-bottom: 28px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-visual {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--gt-shadow-lg);
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }
.hero-orb {
  position: absolute;
  width: 92px; height: 92px;
  bottom: -28px; left: -28px;
  background: var(--gt-grad);
  border-radius: 50%;
  box-shadow: 0 10px 40px rgba(30,156,230,0.45);
  opacity: 0.85;
}

@media (min-width: 880px) {
  .hero { padding: 96px 0 84px; }
  .hero-grid { grid-template-columns: 1.1fr 1fr; gap: 64px; }
}

/* ---------- Page Header (non-home) ---------- */

.page-header {
  padding: 64px 0 32px;
  background: var(--gt-grad-soft);
  border-bottom: 1px solid var(--gt-line);
}
.page-header .eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gt-deep);
  margin-bottom: 14px;
}
.page-header h1 { max-width: 820px; }
.page-header p { max-width: 720px; font-size: 1.1rem; }

/* ---------- Sections ---------- */

section { padding: 64px 0; }
@media (min-width: 880px) { section { padding: 96px 0; } }

.section-head {
  max-width: 760px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head .eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gt-deep);
  margin-bottom: 14px;
}

.bg-soft { background: var(--gt-soft); }
.bg-ink {
  background: var(--gt-deep);
  color: #fff;
}
.bg-ink h1, .bg-ink h2, .bg-ink h3 { color: #fff; }
.bg-ink p { color: rgba(255,255,255,0.78); }
.bg-ink .eyebrow { color: var(--gt-mint); }

/* ---------- Cards / Grids ---------- */

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 880px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.card {
  background: var(--gt-card);
  border: 1px solid var(--gt-line);
  border-radius: var(--gt-radius);
  padding: 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--gt-shadow);
  border-color: rgba(95,211,255,0.4);
}
.card h3 { margin-bottom: 8px; }
.card p:last-child { margin-bottom: 0; }
.card .planet {
  display: block;
  width: 64px; height: 64px;
  margin-bottom: 16px;
  filter: drop-shadow(0 6px 14px rgba(10,26,46,0.15));
}
.card .planet-role {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--gt-mid);
  margin: 0 0 6px;
}
.card .icon {
  width: 44px; height: 44px;
  background: var(--gt-grad);
  border-radius: 12px;
  margin-bottom: 18px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-family: var(--gt-font-head); font-weight: 700;
}

.stat {
  text-align: left;
}
.stat-value {
  font-family: var(--gt-font-head);
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 700;
  background: var(--gt-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 10px;
}
.stat-label {
  color: var(--gt-muted);
  font-size: 0.95rem;
}

/* ---------- Feature with image ---------- */

.feature {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}
.feature img, .feature .feature-visual {
  border-radius: var(--gt-radius);
  box-shadow: var(--gt-shadow);
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
@media (min-width: 880px) {
  .feature { grid-template-columns: 1fr 1fr; gap: 64px; }
  .feature.reverse > :first-child { order: 2; }
}

/* ---------- Press releases ---------- */

.press-list { list-style: none; padding: 0; margin: 0; }
.press-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 22px 0;
  border-bottom: 1px solid var(--gt-line);
}
.press-item:last-child { border-bottom: none; }
.press-date {
  font-family: var(--gt-font-head);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gt-deep);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.press-item h3 {
  font-size: 1.2rem;
  margin: 0 0 4px;
}
.press-item p { margin: 0; color: var(--gt-muted); font-size: 0.95rem; }
@media (min-width: 700px) {
  .press-item {
    grid-template-columns: 160px 1fr;
    gap: 28px;
    padding: 26px 0;
    align-items: baseline;
  }
}

/* ---------- Careers ---------- */

.job {
  background: var(--gt-card);
  border: 1px solid var(--gt-line);
  border-radius: var(--gt-radius);
  padding: 26px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.job:hover { border-color: var(--gt-mint); box-shadow: var(--gt-shadow); }
.job-meta {
  display: flex; flex-wrap: wrap; gap: 8px;
  align-items: center;
  font-size: 0.82rem;
  line-height: 1;
  color: var(--gt-muted);
}
.job-meta span {
  display: inline-flex;
  align-items: center;
  background: var(--gt-soft);
  padding: 6px 12px;
  border-radius: 999px;
  line-height: 1;
  white-space: nowrap;
}
.job h3 { margin: 0; font-size: 1.2rem; }
.job p { margin: 0; color: var(--gt-ink-2); }
.job-apply {
  display: inline-flex; align-items: center; gap: 6px;
  font-weight: 600; color: var(--gt-deep); font-size: 0.9rem;
}
.job-apply::after { content: "→"; transition: transform 0.2s ease; }
.job-apply:hover::after { transform: translateX(4px); }

/* ---------- Testimonials ---------- */

.quote {
  background: var(--gt-card);
  border: 1px solid var(--gt-line);
  border-radius: var(--gt-radius);
  padding: 28px;
}
.quote p { font-size: 1.05rem; color: var(--gt-ink); }
.quote-author {
  display: flex; align-items: center; gap: 12px; margin-top: 18px;
}
.quote-author img {
  width: 44px; height: 44px; border-radius: 50%; object-fit: cover;
}
.quote-author strong { display: block; font-size: 0.95rem; }
.quote-author span { color: var(--gt-muted); font-size: 0.85rem; }

/* ---------- Forms ---------- */

.form {
  background: var(--gt-card);
  border: 1px solid var(--gt-line);
  border-radius: var(--gt-radius);
  padding: 28px;
  display: grid;
  gap: 16px;
}
.form label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 6px;
  color: var(--gt-ink);
}
.form input, .form select, .form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--gt-line);
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--gt-ink);
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form textarea { min-height: 130px; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none;
  border-color: var(--gt-mid);
  box-shadow: 0 0 0 3px rgba(95,211,255,0.18);
}
.form-row { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 640px) { .form-row { grid-template-columns: 1fr 1fr; } }
.form-success {
  display: none;
  background: rgba(95,211,255,0.12);
  border: 1px solid var(--gt-mint);
  border-radius: 10px;
  padding: 14px;
  color: var(--gt-deep);
}
.form-success.show { display: block; }

/* ---------- Diagram / Orbital decoration ---------- */

.orbit-diagram {
  position: relative;
  aspect-ratio: 1/1;
  max-width: 460px;
  margin: 0 auto;
}
.orbit-diagram .core {
  position: absolute; inset: 35%;
  background: var(--gt-grad);
  border-radius: 50%;
  box-shadow: 0 18px 50px rgba(30,156,230,0.35);
}
.orbit-diagram .ring {
  position: absolute; inset: 0;
  border: 1px dashed rgba(30,156,230,0.4);
  border-radius: 50%;
}
.orbit-diagram .ring.r2 { inset: 12%; border-color: rgba(95,211,255,0.5); }
.orbit-diagram .ring.r3 { inset: 22%; border-color: rgba(10,91,196,0.3); }
.orbit-diagram .node {
  position: absolute;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--gt-mint);
  box-shadow: 0 0 0 6px rgba(95,211,255,0.16);
}
.orbit-diagram .node.n1 { top: 6%; left: 50%; transform: translateX(-50%); }
.orbit-diagram .node.n2 { top: 50%; right: 4%; transform: translateY(-50%); background: var(--gt-mid); box-shadow: 0 0 0 6px rgba(30,156,230,0.16); }
.orbit-diagram .node.n3 { bottom: 14%; left: 16%; background: var(--gt-deep); box-shadow: 0 0 0 6px rgba(10,91,196,0.15); }

/* ---------- Reveal-on-scroll ---------- */

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Footer ---------- */

.site-footer {
  background: #0A1A1F;
  color: rgba(255,255,255,0.72);
  padding: 64px 0 24px;
  margin-top: 64px;
}
.site-footer h4 {
  color: #fff;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}
.site-footer a {
  color: rgba(255,255,255,0.72);
  display: block;
  padding: 4px 0;
  font-size: 0.92rem;
}
.site-footer a:hover { color: var(--gt-mint); }
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
@media (min-width: 700px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }

.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; color: #fff; font-family: var(--gt-font-head); font-weight: 700; }
.footer-brand .brand-mark { width: 32px; height: 32px; object-fit: contain; }
.footer-brand .brand-text { height: 18px; width: auto; object-fit: contain; filter: brightness(1.1); }
.footer-tag { font-size: 0.9rem; color: rgba(255,255,255,0.6); max-width: 320px; }

.footer-bottom {
  padding-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
}
@media (min-width: 700px) {
  .footer-bottom { flex-direction: row; justify-content: space-between; align-items: center; }
}
.footer-disclaimer { max-width: 640px; }
.footer-disclaimer a { display: inline; color: var(--gt-mint); }

/* ---------- Focus styles ---------- */

a:focus,
button:focus,
.btn:focus,
.nav-toggle:focus,
.nav-cta:focus,
.nav-links a:focus,
.job-apply:focus { outline: none; }

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-toggle:focus-visible,
.nav-cta:focus-visible,
.nav-links a:focus-visible,
.job-apply:focus-visible {
  outline: 2px solid var(--gt-mint);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- Utilities ---------- */

.center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.flex-wrap { display: flex; flex-wrap: wrap; gap: 12px; }
.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;
}