:root {
  --color-background: #1E2A78;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #BFC7E5;
  --color-accent-coral: #FF6B35;
  --color-accent-yellow: #FFD166;
  --color-accent-mint: #4ECDC4;
  --shadow-soft: 0 20px 50px rgba(0, 0, 0, 0.25);
  --radius-card: 14px;
  --transition-fast: 300ms; /* per design.json */
}

* { box-sizing: border-box; }

html, body { height: 100%; }

.landing-body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text-secondary);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.landing-container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.landing-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(30, 42, 120, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.landing-header .landing-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand { display: flex; align-items: center; }
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--color-text-primary);
  text-decoration: none;
  font-family: Montserrat, Inter, sans-serif;
  font-weight: 800;
  letter-spacing: 0.6px;
  font-size: 20px;
}
.logo { display: inline-flex; align-items: baseline; gap: 0; }
.logo-text { color: var(--color-text-primary); }
.logo-accent { color: var(--color-accent-coral); margin-left: 1px; }

/* Hide text fallback if image is available */
.brand-link.has-logo-image .logo { display: none; }
.nav {
  display: flex;
  align-items: center;
  gap: 18px;
}
.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  position: relative;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast) ease;
}
.nav-link:hover::after { transform: scaleX(1); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 18px;
  border-radius: 10px;
  text-decoration: none;
  font-family: Montserrat, Inter, sans-serif;
  font-weight: 700;
  letter-spacing: 0.4px;
  transition: transform var(--transition-fast) ease, box-shadow var(--transition-fast) ease, background var(--transition-fast) ease, color var(--transition-fast) ease;
  will-change: transform;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-small { height: 38px; padding: 0 14px; border-radius: 8px; font-weight: 600; }
.btn-primary {
  background: var(--color-accent-coral);
  color: #fff;
  box-shadow: 0 10px 30px rgba(255, 107, 53, 0.35);
}
.btn-primary:hover { box-shadow: 0 14px 36px rgba(255, 107, 53, 0.45); }
.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-outline:hover { border-color: rgba(255,255,255,0.45); }

/* Hero */
.hero {
  padding: 72px 0 32px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}
.headline {
  font-family: Montserrat, Inter, sans-serif;
  font-weight: 800;
  color: var(--color-text-primary);
  font-size: clamp(28px, 5vw, 48px);
  line-height: 1.1;
  margin: 0 0 14px;
}
.subheadline {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin: 0 0 22px;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-visual {
  position: relative;
  min-height: 320px;
}
.iso-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(255,255,255,0.06) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(60deg, rgba(255,255,255,0.04) 1px, transparent 1px) 0 0 / 28px 28px;
  border-radius: 16px;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,0.25));
}

/* Hero feature cards (meaningful visuals) */
.hero-feature-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 12px;
}
.hero-feature-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-fast) ease, box-shadow var(--transition-fast) ease, background var(--transition-fast) ease;
}
.hero-feature-card:hover { transform: translateY(-2px); background: rgba(255,255,255,0.08); box-shadow: 0 24px 60px rgba(0,0,0,0.35); }
.hf-icon { font-size: 28px; }
.hf-title { margin-top: 8px; color: var(--color-text-primary); font-weight: 700; font-family: Montserrat, Inter, sans-serif; }
.hf-sub { margin-top: 2px; font-size: 14px; color: var(--color-text-secondary); }

/* Accent borders by theme */
.hero-feature-card.ff { border-color: rgba(255, 107, 53, 0.45); }
.hero-feature-card.uk { border-color: rgba(78, 205, 196, 0.45); }
.hero-feature-card.human { border-color: rgba(255, 209, 102, 0.55); }

/* Sections */
.section { padding: 56px 0; }
.emphasized { background: rgba(255,255,255,0.03); border-top: 1px solid rgba(255,255,255,0.06); border-bottom: 1px solid rgba(255,255,255,0.06); }
.section-title {
  font-family: Montserrat, Inter, sans-serif;
  color: var(--color-text-primary);
  font-weight: 700;
  font-size: clamp(22px, 3.6vw, 32px);
  margin: 0 0 10px;
}
.section-body { margin: 0 0 16px; }

/* Why grid */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 20px;
}
.why-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-card);
  padding: 18px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-fast) ease, background var(--transition-fast) ease;
}
.why-card:hover { transform: translateY(-2px); background: rgba(255,255,255,0.07); }
.icon { font-size: 28px; }
.card-title { margin: 10px 0 6px; color: var(--color-text-primary); font-family: Montserrat, Inter, sans-serif; }
.card-text { margin: 0; }

/* Lists */
.list { margin: 12px 0 0; padding-left: 20px; }
.list li { margin: 8px 0; }

/* Signup */
.signup-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 14px; }
.signup-form input[type="email"] {
  height: 44px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(0,0,0,0.15);
  color: var(--color-text-primary);
  outline: none;
  min-width: 260px;
}
.signup-form input[type="email"]::placeholder { color: rgba(255,255,255,0.6); }
.form-message { margin-top: 8px; min-height: 20px; color: var(--color-text-primary); }

.socials { display: flex; gap: 16px; margin-top: 18px; flex-wrap: wrap; }
.social-link { color: var(--color-text-primary); text-decoration: none; position: relative; }
.social-link::after { content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform var(--transition-fast) ease; }
.social-link:hover::after { transform: scaleX(1); }

/* Footer */
.landing-footer { border-top: 1px solid rgba(255,255,255,0.08); padding: 18px 0; }
.landing-footer .landing-container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-nav { display: flex; gap: 14px; }
.link { color: var(--color-text-secondary); text-decoration: none; }
.link:hover { color: var(--color-text-primary); }

/* Reveal on scroll */
.fade-section { opacity: 0; transform: translateY(8px); transition: opacity var(--transition-fast) ease, transform var(--transition-fast) ease; }
.fade-section.in-view { opacity: 1; transform: translateY(0); }

/* Accessibility helpers */
.visually-hidden { position: absolute !important; height: 1px; width: 1px; overflow: hidden; clip: rect(1px, 1px, 1px, 1px); white-space: nowrap; }

/* Responsive */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; min-height: 240px; margin-bottom: 8px; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .nav { gap: 12px; }
  .nav .btn-outline { display: none; }
  .why-grid { grid-template-columns: 1fr; }
}