:root {
  --bg-color: #050505;
  --text-color: #ffffff;
  --accent-color: #00d2ff;
  --secondary-accent: #9d50bb;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.1);
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.8);
  --font-main: 'Outfit', sans-serif;
}

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

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

/* Glassmorphism utility */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes glow {
  0% { box-shadow: 0 0 5px var(--accent-color); }
  50% { box-shadow: 0 0 20px var(--accent-color); }
  100% { box-shadow: 0 0 5px var(--accent-color); }
}

.fade-in {
  animation: fadeIn 1s ease-out forwards;
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 10%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  transition: all 0.3s ease;
}

header.scrolled {
  padding: 1rem 10%;
  background: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(20px);
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(to right, var(--accent-color), var(--secondary-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
}

nav ul {
  display: flex;
  list-style: none;
}

nav ul li {
  margin-left: 2.5rem;
}

nav ul li a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  opacity: 0.8;
  transition: opacity 0.3s;
}

nav ul li a:hover {
  opacity: 1;
}

/* Hero Section */
.hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 10%;
  position: relative;
  background: radial-gradient(circle at center, rgba(0, 210, 255, 0.1) 0%, transparent 70%);
}

.hero h1 {
  font-size: 4.5rem;
  margin-bottom: 1rem;
  font-weight: 800;
  letter-spacing: -2px;
}

.hero p {
  font-size: 1.4rem;
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 2.5rem;
}

.btn {
  padding: 1rem 2.5rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent));
  color: white;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 210, 255, 0.3);
}

/* Sections */
section {
  padding: 100px 10%;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
}

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

.card {
  padding: 2rem;
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-10px);
}

/* Footer */
footer {
  padding: 4rem 10%;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  opacity: 0.6;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 3rem; }
  header { padding: 1rem 5%; }
  nav { display: none; }
}