:root {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --accent-cyan: #0284c7;
  --accent-purple: #7c3aed;
  --accent-gradient: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.1);
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

/* Glassmorphism Utilities */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 0;
  transition: var(--transition-smooth);
}

header.scrolled {
  padding: 1rem 0;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  transition: var(--transition-smooth);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition-smooth);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 0 2rem;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 30%, rgba(0, 240, 255, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 80% 70%, rgba(176, 0, 255, 0.15) 0%, transparent 40%);
  z-index: 0;
  animation: pulseBg 10s infinite alternate ease-in-out;
}

@keyframes pulseBg {
  0% { transform: scale(1); }
  100% { transform: scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  width: 100%;
}

.hero h1 {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeUp 1s ease-out;
}

.hero p {
  font-size: 1.5rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto 3rem;
  animation: fadeUp 1s ease-out 0.2s backwards;
}

.hero-cta {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent-gradient);
  border-radius: 50px;
  text-decoration: none;
  transition: var(--transition-smooth);
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(0, 240, 255, 0.2);
  animation: fadeUp 1s ease-out 0.4s backwards;
}

.hero-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 25px rgba(0, 240, 255, 0.3);
}

/* Sections Common */
section {
  padding: 8rem 2rem;
  position: relative;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0 auto 4rem;
  position: relative;
  width: fit-content;
  display: block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--accent-gradient);
  border-radius: 2px;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.about-text h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.about-visual {
  position: relative;
  height: 400px;
  border-radius: 20px;
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1000px; /* added for 3d effect */
  transform-style: preserve-3d;
}

.glow-point {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.4) 0%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s;
  z-index: 0;
  transform: translate(-50%, -50%);
}

.about-visual:hover .glow-point {
  opacity: 1;
}

.floating-element {
  position: absolute;
  background: var(--accent-gradient);
  border-radius: 50%;
  filter: blur(40px);
  animation: float 6s infinite ease-in-out;
  transition: transform 0.2s ease-out;
}

.layer-1 { width: 180px; height: 180px; background: rgba(124, 58, 237, 0.5); animation-delay: 0s; z-index: 1; }
.layer-2 { width: 130px; height: 130px; background: rgba(2, 132, 199, 0.6); animation-delay: -2s; animation-direction: reverse; z-index: 2; }
.layer-3 { width: 80px; height: 80px; background: rgba(255, 255, 255, 0.8); animation-delay: -4s; z-index: 3; filter: blur(20px); }

.ai-core-text {
  position: absolute;
  color: var(--text-primary);
  font-size: 2.5rem;
  font-weight: 800;
  transition: transform 0.1s ease-out, text-shadow 0.1s ease-out;
  pointer-events: none;
  z-index: 10;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.1); }
}

/* Services Section */
.services-section {
  background-color: var(--bg-secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3-cols {
  grid-template-columns: repeat(3, 1fr);
}

.service-card {
  padding: 3rem 2rem;
  border-radius: 20px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  text-align: left;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0,240,255,0.05) 0%, rgba(176,0,255,0.05) 100%);
  opacity: 0;
  transition: var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: rgba(0, 240, 255, 0.3);
}

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

.service-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.service-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.service-desc {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Team Section */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.team-card {
  text-align: center;
  padding: 2rem;
  border-radius: 20px;
  transition: var(--transition-smooth);
}

.team-card:hover {
  background: var(--bg-secondary);
}

.team-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--bg-tertiary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--accent-cyan);
  border: 1px solid var(--glass-border);
}

/* Footer */
footer {
  background-color: var(--bg-tertiary);
  padding: 4rem 2rem 2rem;
  text-align: center;
  border-top: 1px solid var(--glass-border);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-desc {
  color: var(--text-secondary);
  max-width: 500px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(0,0,0,0.05);
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.icp-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.icp-link:hover {
  color: var(--accent-cyan);
}

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

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none; /* Add a hamburger menu for real prod, hidden for simplicity here */
  }
  
  .hero h1 {
    font-size: 3rem;
  }
  
  .hero p {
    font-size: 1.2rem;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .grid-3-cols {
    grid-template-columns: 1fr;
  }
}