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

html,
body {
  height: 100%;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;

  padding: 1rem;

  font-family: "Helvetica";
  background-color: #0f0f0f;
}

a {
  color: inherit;
}

/* terminal */

.terminal {
  width: 640px;
  height: 480px;

  overflow: hidden;
  background-color: #161616;
  border-radius: 4px;
  box-shadow: #505050 0 0 1px;
}

.terminal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;

  width: 100%;
  height: 32px;
  padding: 12px;

  color: #505050;
  background: linear-gradient(#efefef, #d2d2d2);
  border-bottom: 2px solid #afafaf;
}

.terminal-controls {
  display: flex;
  gap: 8px;
}

.hidden {
  visibility: hidden;
}

/* circles */

.circle {
  width: 16px;
  height: 16px;
  border-radius: 100%;
}

.red-circle {
  background-color: #ea6b5d;
  border: 1px solid #d2564a;
}

.yellow-circle {
  background-color: #f2c042;
  border: 1px solid #d8a83c;
}

.green-circle {
  background-color: #60c74b;
  border: 1px solid #55a93e;
}

/* terminal body */

.terminal-body {
  font-family: "Monaco", monospace;
  color: #73f636;
  padding: 12px;
}