@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Inter:wght@300;400;500;600&display=swap');

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

:root {
  --bg:        #07080d;
  --bg-card:   #0d1422;
  --bg-card2:  #111827;
  --navy:      #0f1e35;
  --blue:      #2d6be4;
  --blue-lt:   #5b9cf6;
  --blue-dim:  #1e3a6e;
  --white:     #f0f4ff;
  --muted:     #8ca0c0;
  --border:    rgba(45, 107, 228, 0.18);
  --serif:     'Playfair Display', Georgia, serif;
  --sans:      'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ─────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  height: 64px;
  background: rgba(7, 8, 13, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--white);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--white); }

.nav-cta {
  background: var(--blue);
  color: var(--white) !important;
  padding: 0.45rem 1.1rem;
  border-radius: 6px;
  transition: background 0.2s !important;
}

.nav-cta:hover { background: var(--blue-lt) !important; color: var(--bg) !important; }

/* ── HERO ────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 50% 40%, rgba(30, 58, 110, 0.45) 0%, transparent 70%),
    radial-gradient(ellipse 40% 30% at 20% 80%, rgba(45, 107, 228, 0.12) 0%, transparent 60%);
  pointer-events: none;
}

/* subtle star field */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 15% 25%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 72% 15%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 40% 60%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 85% 70%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 55% 85%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 8% 55%, rgba(255,255,255,0.35) 0%, transparent 100%),
    radial-gradient(1px 1px at 93% 40%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 30% 10%, rgba(255,255,255,0.3) 0%, transparent 100%);
}

.hero-inner { position: relative; max-width: 760px; }

.hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-lt);
  background: rgba(45, 107, 228, 0.12);
  border: 1px solid rgba(91, 156, 246, 0.25);
  padding: 0.35rem 1rem;
  border-radius: 20px;
  margin-bottom: 1.6rem;
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.4rem;
  color: var(--white);
}

.hero h1 em {
  font-style: normal;
  color: var(--blue-lt);
}

.hero p {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 2.4rem;
  line-height: 1.75;
}

.btn-primary {
  display: inline-block;
  background: var(--blue);
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  padding: 0.8rem 2rem;
  border-radius: 8px;
  transition: background 0.2s, transform 0.15s;
}

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

/* ── SECTION SHARED ──────────────────────────── */
section { padding: 5rem 2rem; }

.container {
  max-width: 1080px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--blue-lt);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 1rem;
}

.section-sub {
  color: var(--muted);
  max-width: 620px;
  line-height: 1.75;
}

/* ── ABOUT ───────────────────────────────────── */
#about { border-top: 1px solid var(--border); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 3rem;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.4rem 1.2rem;
}

.stat-card .num {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--blue-lt);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-card .label {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ── PRODUCTS ────────────────────────────────── */
#products {
  background: linear-gradient(180deg, var(--bg) 0%, #080e1a 100%);
  border-top: 1px solid var(--border);
}

.products-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 3rem;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color 0.25s, transform 0.2s;
}

.product-card:hover {
  border-color: var(--blue);
  transform: translateY(-3px);
}

.product-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(45, 107, 228, 0.15);
  border: 1px solid rgba(45, 107, 228, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
  font-size: 1.3rem;
}

.product-card h3 {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.product-card p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.product-tag {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue-lt);
  background: rgba(45, 107, 228, 0.1);
  border: 1px solid rgba(45, 107, 228, 0.2);
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
}

/* ── USE CASES ───────────────────────────────── */
#usecases { border-top: 1px solid var(--border); }

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}

.usecase-card {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.6rem 1.4rem;
}

.usecase-card h4 {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.usecase-card p {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.65;
}

/* ── CONTACT ─────────────────────────────────── */
#contact {
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, #080e1a 0%, var(--bg) 100%);
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  margin-top: 3rem;
}

.contact-info address {
  font-style: normal;
  color: var(--muted);
  line-height: 1.9;
  font-size: 0.95rem;
}

.contact-info a {
  color: var(--blue-lt);
  text-decoration: none;
}

.contact-info a:hover { text-decoration: underline; }

.contact-note {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
  padding: 1.6rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.contact-note strong { color: var(--white); }

/* ── FOOTER ──────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--muted);
}

footer span { font-family: var(--serif); color: var(--white); font-size: 0.85rem; }

/* ── RESPONSIVE ──────────────────────────────── */
@media (max-width: 768px) {
  nav { padding: 0 1.25rem; }
  .nav-links { display: none; }

  .about-grid,
  .products-grid,
  .contact-wrap { grid-template-columns: 1fr; gap: 2rem; }

  .usecase-grid { grid-template-columns: 1fr; }

  .about-stats { grid-template-columns: 1fr 1fr; }

  footer { flex-direction: column; gap: 0.5rem; text-align: center; }
}