:root {
  --primary: #6366f1;
  --primary-glow: rgba(99, 102, 241, 0.4);
  --accent: #8b5cf6;
  --bg-dark: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --text-main: #f8fafc;
  --text-dim: #94a3b8;
  --glass-border: rgba(255, 255, 255, 0.1);
  --font-main: 'Outfit', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

.gradient-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: 
    radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.15) 0%, transparent 40%);
  pointer-events: none;
}

.glass {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  margin: 1.5rem 5%;
  position: sticky;
  top: 1.5rem;
  z-index: 100;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -1px;
}

.logo span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
  font-weight: 500;
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text-main);
}

.btn-primary, .btn-glow {
  padding: 0.8rem 1.8rem;
  border-radius: 12px;
  border: none;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-glow {
  background: var(--primary);
  color: white;
  box-shadow: 0 0 20px var(--primary-glow);
  font-size: 1.1rem;
}

.btn-glow:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 0 30px var(--primary-glow);
}

.btn-secondary {
  text-decoration: none;
  color: var(--text-main);
  padding: 0.8rem 1.8rem;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

section {
  padding: 5rem 10%;
  scroll-margin-top: 6rem;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 3rem;
  letter-spacing: -1px;
}

.hero {
  height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-top: 0;
}

h1 {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -2px;
}

.highlight {
  background: linear-gradient(to right, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 1.25rem;
  color: var(--text-dim);
  max-width: 600px;
  margin-bottom: 2.5rem;
}

.cta-group {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  justify-content: center;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  padding: 2.5rem;
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
  background: rgba(30, 41, 59, 0.9);
  border-color: rgba(99, 102, 241, 0.3);
}

.card .icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card p {
  color: var(--text-dim);
}

footer {
  text-align: center;
  padding: 4rem 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in { animation: fadeInUp 0.8s ease-out forwards; }
.delay-1 { animation-delay: 0.2s; opacity: 0; animation-fill-mode: forwards; }
.delay-2 { animation-delay: 0.4s; opacity: 0; animation-fill-mode: forwards; }

@media (max-width: 768px) {
  h1 { font-size: 3rem; }
  .nav-links { display: none; }
  .hero { height: auto; padding: 5rem 5%; }
  .cta-group { flex-direction: column; }
}