/* styles.css */
:root {
  --primary-color: #007bff;
  --secondary-color: #6c7cbc;
  --text-color: #333;
  --background-color: #f5f5f5;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
}

.container {
  max-width: 960px;
  margin: auto;
  padding: 20px;
  background-color: var(--primary-color);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

header {
  text-align: center;
  margin-bottom: 40px;
}

header h1 {
  font-size: 2.5rem;
  margin-top: 0;
}

.header-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.header-nav ul {
  list-style-type: none;
  padding: 0;
  display: flex;
  gap: 20px;
}

.header-nav li a {
  color: var(--secondary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer {
  margin-top: 40px;
  padding: 15px;
  background-color: var(--secondary-color);
  color: var(--text-color);
  font-size: 0.9em;
  border-top: 1px solid #ccc;
}

@media (max-width: 768px) {
  .container {
    padding: 15px;
  }
}