:root {
  --primary: #1A2627;
  --background: #f4f6f8;
  --text: #333;
}

/* test */

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

body {
  font-family: Arial, sans-serif;
  background-color: var(--background);
  color: var(--text);
  line-height: 1.6;
}

header {
  background-color: var(--primary);
  color: white;
  padding: 2rem 1rem;
  text-align: center;
}

header h1 {
  margin-bottom: 0.5rem;
  font-size: 2rem;
}

header p {
  font-size: 1rem;
  color: #ecf0f1;
}

main {
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1rem;
}

section {
  margin-bottom: 2rem;
}

h2 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

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

a:hover {
  text-decoration: underline;
}

footer {
  background-color: #e0e0e0;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  color: #555;
}

.navbar {
  margin-top: 2rem;
  background-color: #2D3F40;
  border-radius: 8px;
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: center;
}

.navbar ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 2rem;
}

.navbar a {
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.navbar a:hover {
  border-color: #fff;
}

.navbar a.active {
  border-color: #fff;
  color: #75fed4;
}