:root {
  --bg-main: #070b17;
  --bg-secondary: #0f1530;
  --card-bg: rgba(255,255,255,0.06);
  --primary: #6366f1;
  --primary-glow: rgba(99,102,241,0.45);
  --accent: #22d3ee;
  --text-main: #f8fafc;
  --text-muted: #b6bdd7;
  --border-soft: rgba(255,255,255,0.12);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

body {
  background: radial-gradient(circle at top, #111749, var(--bg-main));
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}

/* HERO */
.hero {
  min-height: 95vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  background:
    radial-gradient(circle at 70% 30%, var(--primary-glow), transparent 60%),
    linear-gradient(180deg, #0a0f2a, var(--bg-main));
}

.hero-content {
  max-width: 920px;
  text-align: center;
  animation: fadeUp 1s ease forwards;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: -1.5px;
  background: linear-gradient(90deg, #ffffff, #dbe4ff, #a5b4fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  margin-top: 22px;
  font-size: 1.25rem;
  color: var(--text-muted);
}

/* CTA */
.cta {
  margin-top: 50px;
  display: flex;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
}

.btn {
  padding: 15px 36px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  text-decoration: none;
  transition: all 0.35s ease;
  position: relative;
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #020617;
  box-shadow: 0 0 40px var(--primary-glow);
}

.btn.primary:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 0 60px var(--primary-glow);
}

.btn.outline {
  border: 1px solid var(--border-soft);
  color: var(--text-main);
  backdrop-filter: blur(10px);
}

.btn.outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* SECTIONS */
.section {
  padding: 110px 22px;
  max-width: 1280px;
  margin: auto;
}

.section.light {
  background: linear-gradient(180deg, var(--bg-secondary), #050814);
  border-top: 1px solid var(--border-soft);
}

.section h2 {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 26px;
  background: linear-gradient(90deg, #f8fafc, #c7d2fe);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-text {
  max-width: 760px;
  margin: 0 auto 70px;
  text-align: center;
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* GRID */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 36px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-soft);
  padding: 36px;
  border-radius: 22px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(14px);
  transition: all 0.4s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right,
    var(--primary-glow),
    transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.card:hover::before {
  opacity: 1;
}

.card:hover {
  transform: translateY(-10px) scale(1.02);
  border-color: var(--primary);
}

.card h3 {
  margin-bottom: 14px;
  font-size: 1.2rem;
  font-weight: 600;
}

.card p {
  color: var(--text-muted);
  font-size: 0.97rem;
}

/* FOOTER */
.footer {
  padding: 60px 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-soft);
  background: linear-gradient(180deg, #050814, #02040d);
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

/* ANIMATIONS */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* MOBILE */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.8rem;
  }

  .subtitle {
    font-size: 1.1rem;
  }
}