/* =============================================
   OPERANT — Theme CSS
   ============================================= */

:root {
  --bg:         #0d0f14;
  --surface:    #141720;
  --surface-2:  #1a1f2e;
  --border:     #252a38;
  --amber:      #f59e0b;
  --amber-dim:  #b37306;
  --white:      #f5f5f7;
  --muted:      #8b90a0;
  --body:       #b8bec9;
  --nav-h:      68px;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--body);
  font-family: 'DM Sans', sans-serif;
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  border-bottom: 1px solid var(--border);
  background: rgba(13,15,20,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--white);
  letter-spacing: -0.02em;
}
.nav-links {
  display: flex;
  gap: 2rem;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }

/* Section shared */
.section-label {
  font-family: 'Sora', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1rem;
}

/* Hero */
.hero {
  min-height: 100vh;
  padding-top: calc(var(--nav-h) + 5rem);
  padding-bottom: 6rem;
  padding-left: 2rem;
  padding-right: 2rem;
  position: relative;
  display: flex;
  align-items: flex-start;
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, var(--amber-dim) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: 0.12;
  pointer-events: none;
}
.hero-content {
  max-width: 860px;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  font-family: 'Sora', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1.5rem;
}
.hero-headline {
  font-family: 'Sora', sans-serif;
  font-weight: 800;
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  line-height: 1.07;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 2rem;
}
.hero-sub {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--muted);
  max-width: 580px;
}

/* What section */
.what {
  padding: 8rem 2rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.what-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.what-label { margin-bottom: 1rem; }
.what-content p {
  color: var(--muted);
  margin-bottom: 1.25rem;
  font-size: 1rem;
}
.what-statement {
  font-family: 'Sora', sans-serif;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.45;
}

/* Services */
.services {
  padding: 8rem 2rem;
}
.services-inner {
  max-width: 1140px;
  margin: 0 auto;
}
.services-header {
  margin-bottom: 4rem;
}
.services-title {
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  letter-spacing: -0.025em;
  color: var(--white);
  line-height: 1.2;
}
.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border);
}
.service-card {
  padding: 2.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.service-card--wide {
  grid-column: 1 / -1;
  border-right: none;
}
.service-num {
  font-family: 'Sora', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--amber);
  margin-bottom: 1.25rem;
}
.service-card h3 {
  font-family: 'Sora', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.9rem;
  letter-spacing: -0.01em;
}
.service-card p {
  font-size: 0.93rem;
  color: var(--muted);
  line-height: 1.7;
}

/* Sectors */
.sectors {
  padding: 8rem 2rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.sectors-inner {
  max-width: 1140px;
  margin: 0 auto;
}
.sectors-header { margin-bottom: 3.5rem; }
.sectors-title {
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  letter-spacing: -0.025em;
  color: var(--white);
  line-height: 1.2;
}
.sectors-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.sector-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}
.sector-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  margin-top: 0.25rem;
}
.sector-body h3 {
  font-family: 'Sora', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.6rem;
}
.sector-body p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
}

/* Differentiators */
.diff {
  padding: 8rem 2rem;
}
.diff-inner {
  max-width: 1140px;
  margin: 0 auto;
}
.diff-header { margin-bottom: 3.5rem; }
.diff-title {
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  letter-spacing: -0.025em;
  color: var(--white);
  line-height: 1.2;
}
.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border);
}
.diff-item {
  padding: 2.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.diff-item h3 {
  font-family: 'Sora', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.75rem;
}
.diff-item p {
  font-size: 0.93rem;
  color: var(--muted);
  line-height: 1.7;
}

/* CTA strip */
.cta-strip {
  padding: 7rem 2rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  text-align: center;
}
.cta-strip-inner {
  max-width: 640px;
  margin: 0 auto;
}
.cta-statement {
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--white);
  margin-bottom: 1.25rem;
  line-height: 1.25;
}
.cta-sub {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}
.cta-btn {
  display: inline-block;
  background: var(--amber);
  color: #0d0f14;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.85rem 1.75rem;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.2s;
}
.cta-btn:hover { background: #fbbf24; }
.nav-cta {
  background: var(--amber);
  color: #0d0f14 !important;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.4rem 0.9rem;
  border-radius: 5px;
  text-decoration: none;
  transition: background 0.2s;
}
.nav-cta:hover { background: #fbbf24; }

/* Footer */
.footer {
  padding: 5rem 2rem 3rem;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.75rem;
}
.footer-brand {
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}
.footer-tagline {
  font-size: 0.88rem;
  color: var(--muted);
}
.footer-contact {
  margin-top: 0.5rem;
}
.footer-contact a {
  color: var(--amber);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}
.footer-contact a:hover { text-decoration: underline; }
.footer-note {
  font-size: 0.78rem;
  color: #4a5066;
  margin-top: 0.5rem;
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 768px) {
  .nav-links { display: none; }

  .what-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .services-grid,
  .sectors-grid,
  .diff-grid {
    grid-template-columns: 1fr;
  }

  .service-card,
  .diff-item {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .service-card--wide {
    grid-column: auto;
  }

  .hero {
    padding-top: calc(var(--nav-h) + 3rem);
    padding-bottom: 4rem;
  }

  .what, .services, .sectors, .diff, .cta-strip {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }
}

@media (max-width: 480px) {
  .hero-headline {
    font-size: 2.2rem;
  }
  .service-card,
  .diff-item {
    padding: 1.75rem;
  }
}