html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: #0400A0;
}
body {
  font-family: monospace, "Consolas", "Courier New";
  color: #7FFFD4;
  background: #0400A0;
  min-height: 100vh;
  height: 100%;
  font-size: 20px;
  letter-spacing: 2px;
  line-height: 1.5;
}
#c64screen {
  max-width: 650px;
  margin: 40px auto;
  background: #0400A0;
  border: 4px solid #7FFFD4;
  padding: 32px 24px;
  box-shadow: 0 0 60px #000c;
  min-height: 500px;
  white-space: pre-wrap;
  overflow: auto;
  position: relative;
}
.cursor {
  display: inline-block;
  width: 14px;
  background: #7FFFD4;
  animation: blink 1s steps(1) infinite;
  vertical-align: bottom;
  height: 20px;
}
@keyframes blink {
  0%, 50% { background: #7FFFD4; }
  51%, 100% { background: transparent; }
}
/* @font-face kann hier später aktiviert werden, falls gewünscht */