/* ============================================================
   ScalarUp v2 — Shared Design System
   Ivory / Navy / Gold / Blueprint Blue
   ============================================================ */

:root {
  color-scheme: only light;
  --color-bg: #F5F2EC;
  --color-navy: #0D1B3A;
  --color-gold: #D4A843;
  --color-blue: #2D5A8E;
  --color-text: #3A3A3A;
  --color-text-light: #6B6B6B;
  --color-border: #E0DDD5;
  --color-white: #FFFFFF;
  --color-status-available: #22C55E;
  --color-status-dev: #F59E0B;
  --color-status-research: #3B82F6;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
}

main { flex: 1; }

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

a { color: inherit; }

/* ---------- Layout ---------- */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.4rem);
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.section-head .section-sub {
  margin-top: 8px;
  max-width: 640px;
}

.section-sub {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
}

.section-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-navy);
  text-decoration: underline;
  text-decoration-color: var(--color-gold);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  white-space: nowrap;
  transition: color 200ms ease;
}

.section-link:hover { color: var(--color-blue); }

/* ---------- Typography ---------- */

.eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.accent-dot { color: var(--color-gold); }

.hero-body {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  max-width: 560px;
  margin-bottom: 32px;
}

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

.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-link img {
  height: 40px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-navy);
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: border-color 200ms ease, color 200ms ease;
}

.main-nav a:hover { color: var(--color-blue); }

.main-nav a.active { border-bottom: 2px solid var(--color-gold); }

.mobile-menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-navy);
  font-size: 1.25rem;
  line-height: 1;
  padding: 6px 12px;
  cursor: pointer;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 200ms ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-navy);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-blue);
  transform: translateY(-1px);
}

.btn-text {
  color: var(--color-navy);
  padding: 10px 4px;
}

.btn-text:hover { color: var(--color-blue); }

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

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

.hero { padding: 80px 0; }

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-illustration {
  position: relative;
  height: 480px;
  background: var(--color-bg);
  overflow: hidden;
}

.hero-illustration svg.blueprint {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.illus-side-note {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%) rotate(180deg);
  writing-mode: vertical-rl;
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--color-blue);
  opacity: 0.6;
  text-transform: uppercase;
  white-space: nowrap;
}

.illus-bottom-note {
  position: absolute;
  bottom: 8px;
  right: 12px;
  text-align: right;
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--color-blue);
  opacity: 0.6;
  text-transform: uppercase;
  line-height: 1.8;
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 24px;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--color-blue);
}

.card-icon svg { width: 28px; height: 28px; }

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.card p {
  font-size: 0.925rem;
  line-height: 1.6;
  color: var(--color-text);
}

.card-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: 8px;
}

.card-cat {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

/* ---------- Status dots / badges ---------- */

.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.green { background: var(--color-status-available); }
.status-dot.yellow { background: var(--color-status-dev); }
.status-dot.blue { background: var(--color-status-research); }

.status-legend {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.status-legend .status { margin-bottom: 0; }

.card-link {
  display: inline-flex;
  align-items: center;
  margin-top: 16px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-navy);
  text-decoration: none;
  transition: color 200ms ease, transform 200ms ease;
}

.card-link:hover { color: var(--color-gold); }

/* ---------- Philosophy (icon left, text right) ---------- */

.philo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.philo-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 8px 24px 8px 0;
}

.philo-item + .philo-item { border-left: 1px solid var(--color-border); padding-left: 24px; }

.philo-item .card-icon { margin-bottom: 0; flex-shrink: 0; }

.philo-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.philo-item p {
  font-size: 0.925rem;
  line-height: 1.6;
  color: var(--color-text);
}

/* ---------- Steps (From idea to product) ---------- */

.steps {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.step {
  flex: 1;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 28px 24px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.step:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.step-num {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.step h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.step p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text);
}

.step-arrow {
  align-self: center;
  padding: 0 16px;
  color: var(--color-blue);
  font-size: 1.25rem;
  flex-shrink: 0;
}

/* ---------- Product cards ---------- */

.product-card { padding: 28px; }

.product-visual {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 20px;
  color: var(--color-blue);
}

.product-visual svg { height: 110px; width: auto; }

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

.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
  margin-top: auto;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-brand img { height: 36px; width: auto; }

.footer-tagline {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-nav a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-navy);
  text-decoration: none;
  transition: color 200ms ease;
}

.footer-nav a:hover { color: var(--color-blue); }

.footer-social {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-social a {
  color: var(--color-blue);
  display: inline-flex;
  transition: color 200ms ease, transform 200ms ease;
}

.footer-social a:hover { color: var(--color-navy); transform: translateY(-1px); }

.footer-social svg { width: 20px; height: 20px; }

/* ---------- Dividers ---------- */

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) and (min-width: 768px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .philo-grid { grid-template-columns: repeat(2, 1fr); }
  .philo-item + .philo-item { border-left: none; padding-left: 0; }
  .steps { flex-wrap: wrap; gap: 16px; }
  .step { flex: 1 1 40%; }
  .step-arrow { display: none; }
}

@media (max-width: 767px) {
  .section { padding: 48px 0; }
  .hero { padding: 48px 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-illustration { display: none; }
  .card-grid { grid-template-columns: 1fr; }
  .philo-grid { grid-template-columns: 1fr; }
  .philo-item + .philo-item { border-left: none; padding-left: 0; border-top: 1px solid var(--color-border); padding-top: 24px; }
  .steps { flex-direction: column; gap: 16px; }
  .step-arrow { transform: rotate(90deg); padding: 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 8px 24px 16px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--color-border); }
  .main-nav a.active { border-bottom: 1px solid var(--color-border); border-left: 3px solid var(--color-gold); padding-left: 12px; }
  .header-cta { display: none; }
  .mobile-menu-toggle { display: block; }
  .footer-content { flex-direction: column; align-items: flex-start; }
}