/* Theme Variables */
:root {
  /* Light Theme Variables */
  --light-primary: #3498db;
  --light-secondary: #2ecc71;
  --light-accent: #e74c3c;
  --light-text: #333;
  --light-text-light: #666;
  --light-background: #f9f9f9;
  --light-card: #fff;
  --light-border: #eaeaea;
  --light-shadow: rgba(0, 0, 0, 0.1);

  /* Dark Theme Variables */
  --dark-primary: #2980b9;
  --dark-secondary: #27ae60;
  --dark-accent: #c0392b;
  --dark-text: #f5f5f5;
  --dark-text-light: #bbb;
  --dark-background: #222;
  --dark-card: #333;
  --dark-border: #444;
  --dark-shadow: rgba(0, 0, 0, 0.3);

  /* Default to light theme */
  --primary-color: var(--light-primary);
  --secondary-color: var(--light-secondary);
  --accent-color: var(--light-accent);
  --text-color: var(--light-text);
  --text-light: var(--light-text-light);
  --background-color: var(--light-background);
  --card-background: var(--light-card);
  --border-color: var(--light-border);
  --shadow-color: var(--light-shadow);
}

/* Dark theme class */
body.dark {
  --primary-color: var(--dark-primary);
  --secondary-color: var(--dark-secondary);
  --accent-color: var(--dark-accent);
  --text-color: var(--dark-text);
  --text-light: var(--dark-text-light);
  --background-color: var(--dark-background);
  --card-background: var(--dark-card);
  --border-color: var(--dark-border);
  --shadow-color: var(--dark-shadow);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  transition: color 0.3s ease, background-color 0.3s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.header {
  text-align: center;
  margin-bottom: 3rem;
}

.header h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.header p {
  font-size: 1.2rem;
  color: var(--text-light);
  max-width: 800px;
  margin: 0 auto;
}

.demo-section {
  margin-bottom: 4rem;
}

.demo-section h2 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
  color: var(--primary-color);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 1rem;
  background-color: var(--card-background);
  border-radius: 8px;
  box-shadow: 0 2px 8px var(--shadow-color);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.control-group {
  display: flex;
  flex-direction: column;
  min-width: 200px;
  flex: 1;
}

.control-group label {
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.control-group select,
.control-group input {
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--card-background);
  color: var(--text-color);
  transition: border-color 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background-color: var(--card-background);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 5px var(--shadow-color);
  z-index: 100;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.code-example {
  background-color: var(--card-background);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin-top: 2rem;
  overflow: auto;
  box-shadow: 0 2px 8px var(--shadow-color);
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.code-example pre {
  margin: 0;
  font-family: 'Fira Code', 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  color: var(--text-color);
}

.footer {
  text-align: center;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-light);
  transition: border-color 0.3s ease, color 0.3s ease;
}

@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  .header h1 {
    font-size: 2rem;
  }
  
  .header p {
    font-size: 1rem;
  }
  
  .controls {
    flex-direction: column;
  }
}