:root {
  /* Light mode colors (default) */
  --bg-color: #f5f5f5;
  --container-bg: #ffffff;
  --text-color: #333333;
  /* Additional variables from the original CSS */
}

[data-theme="dark"] {
  /* Dark mode colors */
  --bg-color: #1a1a1a;
  --container-bg: #2c2c2c;
  --text-color: #f5f5f5;
  /* Additional dark mode variables */
}

/* Global styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  padding: 20px;
}

/* Component styles would be in their respective component files */