:root {
  --background-color: #ffffff;
  --primary-color: #0066cc;
  --text-color: #333333;
  --secondary-text-color: #666666;
  --highlight-color: #3399ff;
  --outline-color: rgba(0, 0, 0, 0.2);

  --icon-filter: invert(0);
}

[data-theme="dark"] {
  --background-color: #1a1a1a;
  --primary-color: #a594f9;
  --text-color: #e0e0e0;
  --secondary-text-color: #cdc1ff;
  --highlight-color: #e5d9f2;
  --outline-color: rgba(255, 255, 255, 0.2);

  --icon-filter: invert(1);
}

html {
  font-family: "VT323", monospace;
  background-color: var(--background-color);
  color: var(--text-color);
}

a {
  position: relative;
  color: var(--secondary-text-color);
  text-decoration: none;
}

a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0%;
  height: 1px;
  background-color: var(--primary-color);
  transition: width 0.3s;
}

a:hover::after {
  width: 100%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  overflow-x: hidden;
}

@media (max-width: 600px) {
  html {
    font-size: 14px;
  }
}