body {
  margin: 0;
  font-family: Arial, sans-serif;
  background:
    radial-gradient(circle at top center, rgba(80,80,255,0.18), transparent 50%),
    #060912;
  color: #f5f5f5;
}
/* =========================
   NAVBAR
========================= */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 30px 80px;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo a {
  display: flex;
  align-items: center;
}

.nav-logo-image {
  height: 90px;
  width: auto;
  display: block;
}
.nav-links {
  display: flex;
  align-items: center;
}
.nav-links a {
  color: #e5e5e5;
  text-decoration: none;
  margin-left: 40px;
  font-size: 16px;
  transition: opacity 0.3s ease;
}
.nav-links a:hover {
  opacity: 0.7;
}
/* =========================
   PAGE
========================= */
.page {
  max-width: 1100px;
  margin: auto;
  padding: 70px 40px 120px;
  text-align: center;
}
h1 {
  font-size: 86px;
  line-height: 1;
  margin-bottom: 25px;
}
.hero-text {
  font-size: 28px;
  color: #e5e5e5;
  margin-bottom: 30px;
}
.sub-text {
  font-size: 18px;
  color: #9a9a9a;
  max-width: 850px;
  margin: 0 auto 40px;
  line-height: 1.8;
}
.buttons {
  margin-bottom: 90px;
}
/* =========================
   BUTTONS
========================= */
.button {
  display: inline-block;
  padding: 18px 36px;
  border-radius: 999px;
  text-decoration: none;
  margin: 10px;
  font-weight: 600;
}
.primary {
  background: white;
  color: black;
}
.secondary {
  border: 1px solid rgba(255,255,255,0.2);
  color: white;
}
/* =========================
   CARDS
========================= */
.preview-card,
.about-card,
.demo-card,
.why-section {
  max-width: 850px;
  margin: 90px auto 0;
  padding: 55px 45px;
  text-align: center;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 32px;
}
.preview-card h2,
.about-card h2,
.demo-card h2,
.why-section h2,
.metrics h2,
.future-section h2 {
  font-size: 42px;
  margin-bottom: 24px;
}
.preview-card p,
.about-card p,
.demo-card p,
.why-section p {
  max-width: 720px;
  margin: 0 auto 28px;
  color: #b8b8b8;
  line-height: 1.8;
  font-size: 18px;
}
/* =========================
   VIDEO
========================= */
.preview-video {
  width: 500px;
  max-width: 90%;
  display: block;
  margin: 30px auto 40px;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 0 40px rgba(120,100,255,0.12);
}
/* =========================
   METRICS
========================= */
.metrics {
  margin-top: 90px;
}
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.metric-grid div {
  background: rgba(255,255,255,0.06);
  padding: 28px;
  border-radius: 20px;
  font-size: 20px;
}
/* =========================
   FUTURE SECTION
========================= */
.future-section {
  margin: 100px auto 0;
  max-width: 760px;
}
.future-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 28px;
  margin-bottom: 14px;
  border-radius: 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
}
.future-card span {
  font-size: 20px;
}
.future-card span:first-child {
  font-weight: 600;
}
/* =========================
   CONTACT
========================= */
.email-link {
  color: white;
  font-size: 28px;
  font-weight: 700;
  text-decoration: none;
}
/* =========================
   MOBILE
========================= */
@media (max-width: 900px) {
  nav {
    padding: 24px 36px;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  .nav-logo-image {
    height: 70px;
  }
  .nav-links a {
    margin-left: 18px;
    font-size: 14px;
  }
  .page {
    padding: 60px 22px 100px;
  }
  h1 {
    font-size: 54px;
  }
  .hero-text {
    font-size: 22px;
  }
  .preview-card,
  .about-card,
  .demo-card,
  .why-section {
    padding: 36px 24px;
  }
  .metric-grid {
    grid-template-columns: 1fr;
  }
  .future-card {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  /* =========================
   CONTACT CTA
========================= */

.contact-cta {
  max-width: 850px;
  margin: 120px auto 0;
  text-align: center;
}

.contact-cta h2 {
  font-size: 42px;
  margin-bottom: 20px;
}

.contact-cta p {
  color: #b8b8b8;
  max-width: 700px;
  margin: 0 auto 30px;
  line-height: 1.8;
}

/* =========================
   FOOTER
========================= */

footer {
  margin-top: 120px;
  padding: 40px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center;
}

footer p {
  color: #7f7f7f;
  margin-bottom: 15px;
}

.footer-links a {
  color: #a0a0a0;
  text-decoration: none;
  margin: 0 15px;
  font-size: 14px;
}

.footer-links a:hover {
  opacity: 0.7;
}
}