/* styles.css */
/* Simple CSS for Learning */

:root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --light-bg: #ecf0f1;
  --dark-text: #333;
  --white: #fff;
  --spacing: 20px;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--light-bg);
  color: var(--dark-text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
header {
  background-color: var(--primary-color);
  color: var(--white);
  padding: var(--spacing);
  text-align: center;
}

h1 {
  margin: 0;
}

/* Navigation */
nav {
  background-color: var(--secondary-color);
  padding: 10px;
  text-align: center;
}

nav a {
  color: var(--white);
  text-decoration: none;
  margin: 0 15px;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

/* Main Content */
main {
  flex: 1; /* Pushes footer to bottom */
  max-width: 800px;
  margin: 40px auto;
  padding: var(--spacing);
  background: var(--white);
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  text-align: center;
}

p {
  line-height: 1.6;
  font-size: 1.1em;
}

/* Button */
.btn {
  background-color: var(--primary-color);
  color: var(--white);
  border: none;
  padding: 10px 20px;
  font-size: 1em;
  border-radius: 4px;
  cursor: pointer;
  margin-top: 20px;
  transition: background-color 0.3s;
}

.btn:hover {
  background-color: #2980b9;
}

/* Footer */
footer {
  background-color: var(--secondary-color);
  color: var(--white);
  text-align: center;
  padding: var(--spacing);
  font-size: 0.9em;
}