:root {
  --primary: #1e40af;
  --secondary: #0f172a;
  --light: #f8fafc;
  --muted: #64748b;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  background: var(--light);
  color: var(--secondary);
  line-height: 1.6;
}

header {
  background: white;
  box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.navbar {
  max-width: 1200px;
  margin: auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 50px;
}

.logo span {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

nav a {
  text-decoration: none;
  color: var(--secondary);
  font-weight: 500;
}

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

.hero {
  padding: 5rem 2rem;
  background: linear-gradient(135deg, #1e40af, #2563eb);
  color: white;
  text-align: center;
}

section {
  max-width: 1200px;
  margin: auto;
  padding: 4rem 2rem;
}

.title {
  text-align: center;
  margin-bottom: 2rem;
}

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

.card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

footer {
  background: var(--secondary);
  color: #cbd5f5;
  text-align: center;
  padding: 1.5rem;
  margin-top: 3rem;
}