:root {
  --bg-color: #f8fafc;
  --surface-color: rgba(255, 255, 255, 0.9);
  --primary-accent: #0369a1;
  --secondary-accent: #0f172a;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --glass-border: rgba(15, 23, 42, 0.1);
  --glass-shadow: 0 4px 20px 0 rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  color: var(--secondary-accent);
}

.glass {
  background: var(--surface-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 16px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 80px 0;
}

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: radial-gradient(circle at top right, rgba(3, 105, 161, 0.05), transparent),
              radial-gradient(circle at bottom left, rgba(3, 105, 161, 0.05), transparent);
  padding-top: 100px;
}

.hero h1 {
  font-size: 3.5rem;
  margin: 30px 0 20px;
  color: var(--primary-accent);
}

.hero p {
  font-size: 1.3rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.card {
  padding: 40px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background: white;
  border: 1px solid var(--glass-border);
  border-radius: 16px;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  border-color: var(--primary-accent);
}

.card h3 {
  margin-bottom: 15px;
  color: var(--primary-accent);
}

.footer {
  padding: 60px 0;
  background: #f1f5f9;
  border-top: 1px solid var(--glass-border);
  text-align: center;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

nav a {
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--primary-accent) !important;
}

nav.scrolled {
    padding: 10px 30px !important;
    background: rgba(255, 255, 255, 0.98) !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08) !important;
}