:root {
  --primary-color: #0F3D3E;
  --accent-blue: #4a90e2;
  --accent-yellow: #FFD700;
  --accent-purple: #8E44AD;
  --accent-mint: #98FF98;
  --background-color: #F6F9FB;
  --text-color: #1F2937;
  --font-family: 'Poppins', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

body {
  font-family: var(--font-family);
  background-color: var(--background-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
}

header {
  background-color: var(--primary-color);
  color: white;
  text-align: center;
  padding: 4rem 1rem;
}

header h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

header p {
  font-size: 1.25rem;
  color: var(--accent-yellow);
}

button {
  background-color: var(--accent-yellow);
  color: var(--primary-color);
  border: none;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  font-weight: bold;
}

button:hover {
  background-color: var(--accent-purple);
  color: white;
}

section {
  padding: 3rem 1rem;
  background: white;
  margin: 2rem auto;
  border-radius: 12px;
  max-width: 960px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.05);
}

h2 {
  color: var(--primary-color);
  font-size: 2rem;
  margin-bottom: 1rem;
}