:root {
  --bg-color: #fff;
  --text-color: #333;
  --header-bg: #1e1e1e;
  --border-color: #ddd;
  --link-color: #e0e0e0;
  --footer-bg: #333;
  --footer-text: #fff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --header-bg: #1e1e1e;
    --border-color: #333;
    --link-color: #e0e0e0;
    --footer-bg: #000;
    --footer-text: #e0e0e0;
  }
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  color: var(--text-color);
  background-color: var(--bg-color);
}

header {
  background: var(--header-bg);
  padding: 5px 15px;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

img.logo {
    background-color: white;
    height: 70px; /* Adjust based on your logo size */
    display: block;
    margin: 0 auto;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

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

section {
  padding: 3rem 2rem;
  max-width: 800px;
  margin: auto;
}

footer {
  text-align: center;
  padding: 1rem;
  background: var(--footer-bg);
  color: var(--footer-text);
}