:root {
  --bg-light: #f5f5f5;
  --bg-dark: #1e1e1e;
  --text-light: #223b82;
  --text-dark: #e0e0e0;
  --container-light: #ffffff;
  --container-dark: #2c2c2c;
  --highlight-light: #27bcee;
  --highlight-dark: #555;
  --footer-light: #223b82;
  --footer-dark: #192a5a;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--bg-light);
  color: var(--text-light);
  transition: all 0.3s ease-in-out;
}

.container {
  max-width: 800px;
  margin: 20px auto;
  padding: 20px;
  background: var(--container-light);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  transition: all 0.3s ease-in-out;
  text-align: left;
}

h1 {
  color: var(--highlight-light);
  text-align: center;
}

h2 {
  color: var(--highlight-light);
}

p {
  line-height: 1.6;
}

.footer {
  padding: 10px;
  margin-top: 20px;
  background: var(--footer-light);
  color: white;
  text-align: center;
  transition: background 0.3s ease-in-out;
}

ul {
  list-style-type: none;
  padding: 0;
}

ul li {
  background: var(--highlight-light);
  margin: 5px 0;
  padding: 10px;
  border-radius: 5px;
  color: #fff;
}

.theme-toggle-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--container-light);
  border: none;
  padding: 10px 15px;
  border-radius: 20px;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  font-size: 20px;
  transition: all 0.3s ease-in-out;
}

.logo {
  display: block;
  margin: 0 auto 20px auto;
  max-width: 200px;
}