body {
  margin: 0;
  background: #050505;
  color: #00ff00;
  font-family: "Courier New", monospace;
  display: flex;
  justify-content: center;
}

.system {
  width: 800px;
}

header {
  padding: 10px 0;
  border-bottom: 1px solid #00ff00;
  letter-spacing: 2px;
}

.status {
  padding: 10px 0;
  opacity: 0.7;
}

/* INPUT + OUTPUT */
textarea {
  width: 100%;
  height: 120px;
  background: #050505;
  border: 1px solid #00ff00;
  color: #00ff00;
  font-family: monospace;
  padding: 10px;
  resize: none;
  outline: none;
}

textarea:focus {
  box-shadow: 0 0 8px #00ff00;
}

/* BUTTON */
.buttons {
  margin: 10px 0;
}

.buttons button {
  background: transparent;
  border: 1px solid #00ff00;
  color: #00ff00;
  padding: 6px 12px;
  cursor: pointer;
  font-family: monospace;
}

.buttons button:hover {
  background: #00ff00;
  color: #050505;
}

/* SCANLINES */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;

  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 255, 0, 0.05),
    rgba(0, 255, 0, 0.05) 1px,
    transparent 1px,
    transparent 3px
  );

  z-index: 999;
}