:root {
  /* Color Palette */
  --primary: #0a4d8c; /* Deep Steel Blue */
  --primary-light: #1e88e5;
  --secondary: #f39c12; /* Industrial Gold/Orange */
  --dark: #121212;
  --dark-gray: #1a1a1a;
  --light: #f8f9fa;
  --slate: #475569;
  --glass: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  
  /* Typography */
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Roboto', sans-serif;
  
  /* Spacing & Borders */
  --radius: 12px;
  --shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--dark);
  color: var(--light);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

section {
  padding: 80px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-size: 1rem;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 14px rgba(10, 77, 140, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--primary-light);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary-light);
}

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

/* Glassmorphism Classes */
.glass-panel {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 30px;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 20px;
  z-index: 1000;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(18, 18, 18, 0.85);
  backdrop-filter: blur(20px);
  padding: 15px 20px;
  border-bottom: 1px solid var(--glass-border);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--light);
  letter-spacing: -0.5px;
}

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

.nav-links {
  display: flex;
  gap: 30px;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
}

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

/* Responsive Grid */
.grid {
  display: grid;
  gap: 30px;
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}